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Inventi Impact - Optical Technologies

Patent Watch

  • Optical Low-Noise Block Downconverter, Multiple Dwelling Unit, and Related Satellite Television System

    A low-noise block downconverter includes a first down-converting circuit for down-converting and filtering a first polarization signal for outputting a first intermediate-frequency signal, a second down-converting circuit for down-converting and filtering a second polarization signal for outputting a second intermediate-frequency signal, wherein a frequency band of the first intermediate-frequency signal is the same as that of the second intermediate-frequency signal, an oscillator for generating an oscillating signal, outputted to the first down-converting circuit and the second down-converting circuit, a first optical transmitter coupled to the first down-converting circuit for converting the first intermediate-frequency signal into a first optical signal, and a second optical transmitter coupled to the second down-converting circuit for converting the second intermediate-frequency signal into a second optical signal.

  • Optical Disk Drive with Protection Design Against Broken Disk

    An optical disk drive with a protection design against a broken disk comprises the following devices of: a chassis; an upper cover mounted above the chassis and having a bended part on a front end thereof; a tray mounted between the chassis and the upper cover for supporting an optical disk; a faceplate mounted on the front end of the upper cover; a door mounted on the front end of the tray; a double-layered retaining plate having a first retaining plate and a second retaining plate located respectively on both front and rear sides of the bended part. The bended part is located behind the faceplate, and a space is formed between the bended part and the faceplate.

  • CLIENT-SERVER MULTIMEDIA ARCHIVING SYSTEM WITH METADATA ENCAPSULATION

    A system, method and computer program product for archiving image, audio, and text data with metadata encapsulation in a client-server storage library is described. The server receives and holds the images, audio, or text to be archived in an image, audio or text logical partition which includes a directory of the images, audio, or text. The information is encapsulated in a metadata wrapper and stored in the library as a closed image, audio, or text file along with a closed copy of the directory. The closed image, audio, or text directory is also stored in the client. The images may be encapsulated in MXF, DICOM, Tape Archive (TAR) or GZIP formats. The storage library may have magnetic tapes, magnetic disks or optical disks as storage media.

  • REMOTE MONITORING

    An apparatus and method are provided for monitoring, remotely, information relating to the motion of at least one moving object. The apparatus comprises: means for illuminating a retro-reflective data carrier mounted on each moving object, in particular when the moving object is located at a predetermined monitoring position; means for detecting, in optical signals returned by the retro-reflective data carrier, data representing a timing trigger and data representing an identifier for the at least one moving object; timer means responsive to a timing trigger detected at the predetermined monitoring position to trigger a timer associated with a detected identifier; and an output to provide timing information associated with the detected identifier, and hence relating to the at least one moving object at the predetermined monitoring position. The timing information may be used to derive relative ordering, relative timing or speeds of moving objects, for example.

  • Accommodating Intraocular Lenses

    An accommodating intraocular lens includes an optic portion a haptic portion and a backstop. The optic portion of the lens includes an actuator that deflects a lens element to alter the optical power of the lens responsive to forces applied to the haptic portion of the lens by contraction of the ciliary muscles. Forces applied to the haptic portion may result in fluid displacements from or to the haptic portion from the actuator. The backstop provides support to the haptic so that bulk translation of the haptic is prevented in response to the forces applied by the capsular sac.

  • INTRAOCULAR LENS WITH POST-IMPLANTATION ADJUSTMENT CAPABILITIES

    Disclosed are accommodating intraocular lenses for implantation in an eye having an optical axis. In certain embodiments, an intraocular lens includes an anterior optic, a posterior optic, and a support structure configured to move the optics relative to each other along an optical axis between an accommodated state and an unaccommodated state. In certain embodiments, at least a portion of the support structure can be modified in situ to alter reaction forces between the support structure and at least one structure of the eye. In certain embodiments, a refractive property of one of the anterior or posterior optics can be modified in situ while leaving the refractive properties of the remaining one of the anterior or posterior optics substantially unaffected. Additional embodiments and methods are also disclosed.

  • DEVICE AND METHOD FOR FISTULA TREATMENT

    A device and method for fistula treatment are disclosed comprising a laser source, a fiber optics system and an online monitoring system. An optical fiber, radiating from its distal end in an essentially radial pattern, is inserted utilizing suitable tools for imaging, placement and insertion. Radiation is delivered until shrinkage and closure are observed and fiber optic device is removed after a few minutes. Preferred wavelengths are 980.+-.30 nm, 1320.+-.50 nm, 1470.+-.60 nm and 2000.+-.50 nm applied alone or in combination. In another embodiment, the disclosed procedure is used as a complement of conventional techniques such as fistula plugs or placement of mucosa flaps to enhance results. In another preferred embodiment, the inner layer of the tract is saturated with light sensitive substances, such as photosensitizers. Thus, homogeneous irradiation of the surface using a suitable light distributor and light/laser source causes a depth limited necrosis of the relevant tissue. Present method and device can be used successfully to treat high fistulas with less pain than fistulotomy and without risk of bowel incontinence. Procedure requires short hospitalization stays.

  • System and Method for Precise Beam Positioning in Ocular Surgery

    A method for ocular surgery requires use of a delivery system for generating and guiding a surgical laser beam to a focal point in a treatment area of an eye. Additionally, a contact device is employed for using the eye to establish a reference datum. Further, an optical detector is coupled to the beam path of the surgical laser to create a sequence of cross-sectional images. Each image visualizes both the reference datum and the focal point. Operationally, a computer then uses these images to position and move the focal point in the treatment area relative to the reference datum for surgery.

  • OPTICAL COHERENCE TOMOGRAPHY WITH MULTIPLE IMAGING INSTRUMENTS

    A combination includes an OCT system, an optical instrument, optics defining an optical path from the optical instrument to a target, and secondary optics for coupling the OCT system to the optical path. This combination permits simultaneous operation of the OCT system and the optical instrument.

  • Endoluminal Laser Ablation Device and Improved Method for Treating Veins

    An improved method and device is provided for safe and efficient low power density endoluminal treatment of venous insufficiency and similar procedures. One such device emits pulsed or continuous energy radially from an optical fiber with two or more emitting portions at its distal region for 360.degree. radial (circumferential) emission in various portions of the vein. Each emitting section comprises a fiber with a truncated cone and a short fiber segment with a conical tip at the distal end of the fiber assembly. Different embodiments are presented which vary according to geometrical dimensions of emitting sections, such as diameter of the truncated cone, fiber core diameter and length of the fiber segment in front of the fiber with its truncated cone. In a preferred embodiment, the fiber and the short fiber segment are "butt-coupled" inside the glass dome with no additional adhering means. The fiber and the short fiber segment are laterally fused to the protective glass dome. As the back end of the truncated cone section is fused to the outer tube, the area in close contact with the forward piece is fused to the forward section. In another preferred embodiment, the truncated cone of the fiber is glued to the proximal end of the fiber segment. In another embodiment, the contact area is fused first, then, an outer tube is attached. Laser radiation is transmitted at a wavelength and power such that is it substantially entirely absorbed within a fraction of the blood vessel wall to sufficiently damage the intravascular endothelium and, in turn, achieve blood vessel closure. Such wavelengths include, but are not limited to about 980 nm, 1470 nm and 1950 nm. Because the energy is substantially entirely absorbed within the first third of a blood vessel wall, the need for a local anesthetic along the treatment area of the blood vessel is substantially avoided. Because the optical fiber device contains multiple emission points, withdrawal speed can be increased, and/or emitted energy levels can be set at minimum values.

  • MULTIMODAL DEPTH-RESOLVING ENDOSCOPE

    A fiber-optic multimodal multi-spectral (MS), Optical Coherence Tomography (OCT), photoacoustic (PA) endoscope with beam scanning by a two-dimensional Microelectromechanical systems (MEMS) scanner present in the endoscopic head, combined in a synergetic way in a single endoscopic system. The PA, OCT and MS light sources are coupled to the endoscopic head through an optical switcher. Using a single optical endoscopic head and an electro-optical switch the endoscope of the invention is capable of sequential or parallel MS, OCT and PA imaging. The endoscope provides real-time imaging with a rate of 5 to 60 frames per second for each of the three imaging modalities.

  • EXTENDED INTERIOR METHODS AND SYSTEMS FOR SPECTRAL, OPTICAL, AND PHOTOACOUSTIC IMAGING

    The present invention relates to the field of medical imaging. More particularly, embodiments of the invention relate to methods, systems, and devices for imaging, including for tomography-based applications. Embodiments of the invention include, for example, a computed tomography based imaging system comprising: (a) at least one wide-beam gray-scale imaging chain capable of performing a global scan of an object and acquiring projection data relating to the object; (b) at least one narrow-beam true-color imaging chain capable of performing a spectral interior scan of a region of interest (ROI) of and acquiring projection data relating to the object; (c) a processing module operably configured for: (1) receiving the projection data; (2) reconstructing the ROI into an image by analyzing the data with a color interior tomography algorithm, aided by an individualized gray-scale reconstruction of an entire field of view (FOV), including the ROI; and (d) a processor for executing the processing module. The extended interior methods and systems for spectral, optical, and photoacoustic imaging presented in this application can lead to better medical diagnoses by providing images with higher resolution or quality, and can lead to safer procedures by providing systems capable of reducing a patient's exposure time to, and thus quantity of, potentially harmful x-rays. Embodiments of the invention also provide tools for real-time tomography-based analyses.

  • Ultra high-speed adaptive and all-optical method for data packet rate multiplication compatible with multiple data rates

    The present invention relates to an adaptive and all-optical method for data packet rate multiplication compatible with multiple data rates and/or multiple communication protocols. By performing a real-time pulse width compression on an original electronic or optical packet from an end user or a network interface device, the method generates an optical packet having an identical rate with the original packet while the duration of each pulse being significantly reduced. Then, by eliminating any redundant idle time due to the pulse width compression, the method also shortens data period and thus makes the rate of packet multiplied. The present invention addresses the technical problem of limited data rate in EO/OE conversion as known in the prior art and solves fundamentally the interconnection and communication between networks or systems of different data rates and/or protocols. The method of the present invention thus enables the design of an ultrahigh rate all-optical communication system and network transparent in rate and protocol.

  • Beam applying method, optical recording medium, and recording and reproducing apparatus

    In a beam applying method, recording and reproducing operations are performed on an optical recording medium, in which a signal is recorded and reproduced by applying a beam thereto and which has a recording layer on which the signal is recorded, a quarter-wavelength plate formed below the recording layer, a polarizing plate formed further below the quarter-wavelength plate, and a reflecting film formed below the quarter-wavelength plate. The beam applying method includes the steps of; emitting a beam to be applied to the optical recording medium; and driving a quarter-wavelength plate inserted into an optical system serving to guide the emitted beam to the optical recording medium so that the optical axis direction thereof has a predetermined angle difference at the time of performing a recording operation and reproduction.

  • Linearized phase modulated analog optical links

    A phase-modulated analog optical link that uses parallel interferometric demodulation to mitigate the dominant intermodulation distortion present in the link. A receiver for demodulating phase modulated optical signals includes a splitter dividing the phase modulated signal into parallel optical paths, each optical path having an asymmetrical interferometer, the time delays of the interferometers being unequal, and each optical path includes a photodiode optically connected to an output of the interferometer. Outputs of the photodiodes enter a hybrid coupler. Alternatively, outputs of the interferometer enter a balanced photodetector. A phase shifter or time delay element can be included in one optical path to ensure inputs to the coupler or balanced photodetector have the correct phase. The input power to the parallel optical paths is split in a ratio that balances the third-order distortion in the output photocurrent.

  • Method and system for coupling multimode optical fiber to an optical detector

    A method for making a multimode fiber optic subassembly includes alignment of an optical detector with a fiber termination of an optical fiber. The output of the optical detector (e.g. photocurrent) can be measured from light being transmitted through the optical fiber and detected by the optical detector. The end of the optical fiber and/or the optical detector can be positioned and angularly oriented in order to obtain relative maximum or peak output of the optical detector for a given position and orientation. The output of the optical detector can be monitored while mechanically manipulating, e.g. bending, flexing, shaking and/or twisting, the optical fiber, in order to verify that the positional relationship between the end of the optical fiber and the optical detector corresponds to a position and/or orientation that provides stable output from the optical detector. If the optical detector output is not stable, the end of the multimode optical fiber and the optical detector can be moved, changing the position and/or the orientation of one or both, until the output of the optical detector is stable during manipulation. If the optical detector output is stable, the end of the multimode optical fiber is fixed to the optical detector. The resulting subassembly, a fiber optic pigtail, can be made by cutting the optical fiber a short distance from the optical detector.

  • Optical sensing based on overlapping optical modes in optical resonator sensors and interferometric sensors

    Techniques and devices based on transverse magnetic (TM) and transverse electric (TE) modes in an optical resonator or interferometer to provide sensitive optical detection with insensitivity to a change in temperature. A shift in a difference between a first resonance wavelength of a TE optical mode and a second resonance wavelength of a TM optical mode is measured to measure a change in a sample that is in optical interaction with the optical resonator or interferometer. For example, the detected shift can be used to measure a change in a refractive index of the sample.

  • Quantum dot-mediated optical fiber information retrieval systems and methods of use

    The present disclosure relates to a non-invasive and real-time diagnostic analysis concept for an operational single mode optical fiber communication system and methods of using said system. The system comprises an optical fiber capable of being diagnosed non-invasively comprising an optical fiber for conveying a light beam that comprises an optical fiber comprising a first end for receiving the light beam and a second end opposed thereto, a core comprising an inner wall, and a cladding surrounding the core, the optical fiber further comprising at least one uncladded portion comprising a plurality of quantum dots dispersed in a medium, and wherein the quantum dots become activated by evanescent wave coupling resulting from total internal reflection of the light beam contacting the inner wall of the optical fiber core and wherein the activation results in emittance of light from the quantum dots.

  • Method and device for detecting weak optical signals

    An optical detection device is disclosed. The device comprises a photoelectric unit, configured to sense incoming photons and to produce electrical signals pertaining to at least a few of the photons within a plurality of temporally resolved time-windows; an analog-to-digital unit, configured to generate digital representation of the electrical signals; and a digital integrating unit, configured to integrate the digital representation over at least part of the temporally resolved time-windows to provide integrated data corresponding to the photons.

  • SPEECH GENERATION DEVICE WITH A PROJECTED DISPLAY AND OPTICAL INPUTS

    In several embodiments, a speech generation device is disclosed. The speech generation device may generally include a projector configured to project images in the form of a projected display onto a projection Surface, an optical input device configured to detect an input directed towards the projected display and a speaker configured to generate an audio output. In addition, the speech generation device may include a processing unit communicatively coupled to the projector, the optical input device and the speaker. The processing unit may include a processor and related computer readable medium configured to store instructions executable by the processor, wherein the instructions stored on the computer readable medium configure the speech generation device to generate text-to-speech output.

  • SEISMIC ACQUISITION SYSTEM INCLUDING A DISTRIBUTED SENSOR HAVING AN OPTICAL FIBER

    A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.

  • TWO-PHASE OPTICAL ASSAYS FOR ANALYTES OF NO INTRINSIC OPITCAL CONTRAST

    Methods and kits for performing a two-phase optical assay for one or more than one analyte without intrinsic optical contrast in a sample are disclosed. The method requires use of a functionalized microparticle immobilized with two or more than functional components and an additional set of one or more than one functional component. The assay can be performed in one single container and does not need a wash step.

  • TWO-PHASE OPTICAL ASSAYS FOR ANALYTES OF NO INTRINSIC OPITCAL CONTRAST

    Methods and kits for performing a two-phase optical assay for one or more than one analyte without intrinsic optical contrast in a sample are disclosed. The method requires use of a functionalized microparticle immobilized with two or more than functional components and an additional set of one or more than one functional component. The assay can be performed in one single container and does not need a wash step.

  • OPTICAL SCANNER AND IMAGE-FORMING DEVICE

    An scanning unit scanner includes a light source and a polygon mirror unit. A front-to-rear rib is disposed between the light source and the polygon mirror unit and near the polygon mirror unit. An input side opening having a slit shape is formed as a cutout in the top edge of the front-to-rear rib. When laser light from the light source passes through the input side opening, the input side opening restricts the width of the light in a main scanning direction.

  • SENSOR HEAD AND OPTICAL SENSOR

    A sensor head for an optical pressure sensor according to the present invention includes: a light-emitting optical fiber for transmitting light emitted from a light source; a reflecting plate whose position relative to an end surface of the light-emitting optical fiber moves in accordance with a pressure and which reflects the light emitted from the end surface of the light-emitting optical fiber; a first optical fiber and a second optical fiber, each of which has an end surface that the light reflected by the reflecting plate enters, the first optical fiber transmitting the light thus entered to a first photodetector and the second optical fiber transmitting the light thus entered to a second photodetector; and a light-intensity variation section that changes a transmission loss in the light-emitting optical fiber in accordance with a change in humidity in the sensor head.

  • MULTIFUNCTIONAL OPTICAL SENSOR

    The invention relates to a multifunctional optical sensor, having at least 2 areas which independently react to different input parameters, the sensor comprising a substrate and a polymeric layer comprising polymerized liquid crystal monomers having an ordered morphology, wherein the color, the reflectivity or the birefringence of the sensor changes due to a change of the morphology, wherein said change of the morphology is caused by physical contact with a chemical agent such as a gas or liquid a change of temperature, or passage of time. The invention also relates to a process for the preparation of the sensor and for the use of a film comprising a single substrate, a layer having a cholesteric liquid crystalline structure for application in labels for packaging of perishable goods, food, fine chemicals, bio-medical materials.

  • ISOLATION AND CHARACTERIZATION OF A SINGLE MITOCHONDRION

    A method for identifying mitochondrial heteroplasmy within eukaryotic cells is provided. This method includes means for isolating and capturing a single mitochondrion from at least one eukaryotic cell, wherein the means for isolating and capturing a single mitochondrion further includes optical tweezers or a similar optical technology; means for analyzing the isolated and captured mitochondrion, wherein the means for analyzing the isolated and captured mitochondrion further includes a DNA amplification system and a sequencing system for amplifying and sequencing DNA extracted from the mitochondrion; means for identifying at least one mitochondrial heteroplasmy of interest; and means for using the DNA amplification and DNA sequencing systems to determine the presence or absence of the mitochondrial heteroplasmy within the eukaryotic cell from which the mitochondrion was obtained.

  • METHOD OF FABRICATING THIN-FILM TRANSISTOR SUBSTRATE

    A method of fabricating a thin-film transistor (TFT) substrate includes forming a gate electrode on a substrate; forming an insulating film on the gate electrode; forming an amorphous semiconductor pattern on the insulating film; and forming a source electrode separated from a drain electrode on the amorphous semiconductor pattern; forming a light-concentrating layer, which includes a protrusion, on the amorphous semiconductor pattern, the source electrode, and the drain electrode; and crystallizing at least part of the amorphous semiconductor pattern by irradiating light to the protrusion of the light-concentrating layer.

  • Optical Disc Drive

    An optical disc drive is provided to comprise a main circuit board; an optical pickup head, electrically connected to the main circuit board for reading data from an optical disc and for writing a label side of the optical disc; an spindle motor module, electrically connected to the main circuit board through a first flexible flat cable for supporting and rotating the optical; and a spoke detecting module, electrically connected to the main circuit board through a second flexible flat cable for detecting a spoke pattern formed on inner radius of the label side of the optical disc.

  • LOCKING MECHANISM AND AN OPTICAL DISK DRIVE HAVING THE SAME

    A locking mechanism for installation on a device body, which includes an actuating element, includes a bezel having a through hole and a first positioning portion spaced apart from the through hole, and a locking element including a front operating portion extending through and movable along the through hole in a left-right direction, at least one guide pin extending in a front-rear direction, and an engaging portion. A press button is mounted slidably on the guide pin, and includes a contact portion adapted to be spaced apart from the actuating element in the left-right direction. The front operating portion is operable to move the press button between non-operative and operative positions, where the contact portion is adapted to be placed out of and in alignment with the actuating element, respectively. The engaging portion engages the first positioning portion when the press button is in the non-operative position.

  • INFORMATION HANDLING SYSTEM FORCED ACTION COMMUNICATED OVER AN OPTICAL INTERFACE

    A forced power down signal issues from an I/O device to an information handling system through an optical interconnect if the information handling system fails to power down in response to a normal power down message. A 100% duty cycle signal issues from an optical interface at the I/O device and is detected by an optical interface of the information handling system, which issues a command to force a power down of the information handling system in response to the forced power down signal.

  • SYSTEMS AND METHODS FOR IN-VIVO OPTICAL IMAGING AND MEASUREMENT

    Disclosed are methods and systems for: (i) sequentially illuminating a specimen with different spatial distributions of light, wherein each illumination causes an object embedded in the specimen to emit radiation in response to the light; (ii) for each different spatial distribution of illumination light, imaging the radiation emitted from the specimen from each of multiple sides of the specimen; and (iii) determining information about the object in the specimen based on the imaged radiation from each of the multiple sides for each of the different spatial distributions of illumination light.

  • SYSTEMS AND METHODS FOR MINIMALLY-INVASIVE OPTICAL-ACOUSTIC IMAGING

    An imaging guidewire can include optical fibers communicating light along the guidewire. At or near its distal end, one or more blazed or other fiber Bragg gratings (FBGs) directs light to a photoacoustic transducer material that provides ultrasonic imaging energy. Returned ultrasound is sensed by an FBG sensor. A responsive signal is optically communicated to the proximal end of the guidewire, and processed to develop a 2D or 3D image. The guidewire outer diameter is small enough such that an intravascular catheter can be passed over the guidewire. Techniques for improving ultrasound reception include using a high compliance material, resonating the ultrasound sensing transducer, using an attenuation-reducing coating and/or thickness, and/or using optical wavelength discrimination. Techniques for improving the ultrasound generating transducer include using a blazed FBG, designing the photoacoustic material thickness to enhance optical absorption. Techniques for distinguishing plaque or vulnerable plaque may enhance the displayed image.

  • SYMMETRICALLY PACKAGED OPTICAL SENSORS FOR IMPLANTABLE MEDICAL DEVICES

    Implantable medical devices and methods include an optical sensor that includes at least two optical sensor portions. The light emitting devices of the optical sensor are distributed among the at least two optical sensor portions.

  • POLYMER COMPRISING CYCLOHEXYLENE GROUPS AND ITS USE IN FILMS WITH NEGATIVE OPTICAL DISPERSION

    The invention relates to novel polymers comprising cyclohexylene groups which are especially suitable for use in birefringent films with negative optical dispersion, to novel formulations and polymer films comprising them, and to the use of the polymers, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.

  • MICROBEAD OPTICAL SENSOR WITH LAYERED PLASMON STRUCTURE FOR ENHANCED DETECTION OF CHEMICAL GROUPS BY SERS

    An optical sensor and method for use with a visible-light laser excitation beam and a Raman spectroscopy detector, for detecting the presence chemical groups in an analyte applied to the sensor are disclosed. The sensor includes a substrate, a plasmon resonance mirror formed on a sensor surface of the substrate, a plasmon resonance particle layer disposed over the mirror, and an optically transparent dielectric layer about 2-40 nm thick separating the mirror and particle layer. The particle layer is composed of a periodic array of plasmon resonance particles having (i) a coating effective to binding analyte molecules, (ii) substantially uniform particle sizes and shapes in a selected size range between 50-200 nm (ii) a regular periodic particle-to-particle spacing less than the wavelength of the laser excitation beam. The device is capable of detecting analyte with an amplification factor of up to 10.sup.12-10.sup.14, allowing detection of single analyte molecules.

  • METHOD OF MANUFACTURING OPTICAL WAVEGUIDE FOR TOUCH PANEL

    A method of manufacturing an optical waveguide for a touch panel is provided which achieves a small dimensional change due to heat to provide precise formation positions of a cladding layer and cores on a substrate. The method includes: selecting an elongated substrate made of stainless steel to continuously apply a first photosensitive resin composition; heating the first photosensitive resin composition to volatilize a solvent therein; irradiating the first photosensitive resin composition to form the cladding layer; continuously applying a second photosensitive resin composition; heating the second photosensitive resin composition to volatilize a solvent therein; and irradiating the second photosensitive resin composition with irradiation light through a photomask to expose the second photosensitive resin composition to the irradiation light, and thereafter dissolving away unexposed portions of the second photosensitive resin composition by using a developing solution.

  • OPTICAL WAVEGUIDE PRODUCTION METHOD

    An optical waveguide production method is provided which reduces a transmission loss, improves alignment mark visual detectability, and ensures excellent productivity. In the optical waveguide production method, an under-cladding layer, a core and an alignment mark are formed on a surface of a metal substrate. On the other hand, a molding die is prepared which includes a cavity and an alignment mark to be associated with the alignment mark. In turn, light emitted from the side of the molding die is utilized for positioning the metal substrate and the molding die with reference to the pair of associated alignment marks. Then, an over-cladding layer is formed over the core. The alignment mark is formed from a photo-curable composition comprising the following components (A) and (B): (A) a polymerizable composition having a (meth)acrylate group; and (B) a photoradical polymerization initiator.

  • OPTICAL CHIPS AND DEVICES FOR OPTICAL COMMUNICATIONS

    Optical devices are disclosed consisting of optical chips (planar lightwave circuits) which have optically symmetric or matching designs and properties and optical components which create asymmetry in the optical devices. The devices find application in detection in coherent and non-coherent optical communications systems.

  • OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION APPARATUS

    An optical transmitter is disclosed. An optical modulator outputs an optical signal by modulating light being input, and has an optical absorption characteristic which changes a degree of optical absorption depending on a bias voltage being applied and includes a first characteristic region and a second characteristic region in which the degree of the optical absorption is greater than the first characteristic region. An power source applies an electric field generated by applying a predetermined shutdown bias voltage corresponding to the second characteristic region to electrodes provided in two interference optical guides formed in the optical modulator, when an output of the optical signal from the optical modulator is shut down to be less than or equal to a desired amount.

  • Path Computation Element System and Method of Routing and Wavelength Assignment in a Wavelength Switched Optical Network

    The disclosure includes an apparatus comprising a path computation element (PCE) that manages the processes of routing in an optical network, wherein the PCE receives a path computation request and provides a wavelength range to a network element (NE), and wherein the NE assigns a wavelength from the wavelength range. Also disclosed is an apparatus comprising a path computation client (PCC) that sends a path computation request to a path computation client (PCE) using path computation element communication protocol (PCEP), and receives a routing and wavelength assignment (RWA) reply to the path computation request using PCEP, wherein the RWA reply comprises an PCEP error message comprising a PCEP error object and an error value to indicate errors associated with the RWA request.

  • FLAT-PANEL OPTICAL PROJECTION APPARATUS WITH REDUCED DISTORTION

    A light guide of the tapered-waveguide type includes an input slab for expanding a projected image between an input end and an output end; and a tapered output slab arranged to receive rays from the said output end of the input slab, and to emit them at a point on its face that corresponds to the angle at which the ray is received. The taper is calculated so that all rays injected into the input end undergo the same number of reflections before leaving the output face. The thickness of the input slab light guide is greater in the transverse direction away from the centre line, so that light travelling at the critical angle from the input face of the slab waveguide towards the output waveguide bounces the same number of times in the input slab, regardless of its fan-out angle, in order to further reduce image distortion.

  • OPTICAL CONTACT MICROMETER

    Certain examples provide optical contact micrometers and methods of use. An example optical contact micrometer includes a pair of opposable lenses to receive an object and immobilize the object in a position. The example optical contact micrometer includes a pair of opposable mirrors positioned with respect to the pair of lenses to facilitate viewing of the object through the lenses. The example optical contact micrometer includes a microscope to facilitate viewing of the object through the lenses via the mirrors; and an interferometer to obtain one or more measurements of the object.

  • Method and Apparatus for the Optical Determination of Total Organic Carbon in Aqueous Streams

    A method and apparatus for the measurement of total organic carbon content in an aqueous stream is disclosed. Absorbance of electromagnetic energy by the aqueous stream is measured in an optical sample cell with pulsed light at a wavelength of 190 nm.+-.10 nm. A value of total organic carbon from the measured absorbance is calculated without absorbance or fluorescence measurement at any other wavelength.

  • LIGHT-BLOCKING MEMBER FOR OPTICAL INSTRUMENT

    A light-blocking member for optical instruments having improved abrasion resistance and adhesiveness while having high sliding properties and maintaining physical properties of a light-shielding layer, such as light-shielding properties and delustering properties, is provided. A light-blocking member for optical instruments can include a film substrate 2 and a light-shielding layer formed on at least one surface of the substrate. The light-shielding layer can include a binder resin, carbon black, a particulate lubricant and fine particles. Contents of the binder resin and particulate lubricant are 65 wt % or higher and 5 to 15 wt %, respectively. As the particulate lubricant, those having a higher density than that of the fine particles can be used.

  • SYSTEMS AND METHODS FOR POLICY-BASED INTELLIGENT PROVISIONING OF OPTICAL TRANSPORT BANDWIDTH

    Policy-based, on-demand provisioning of optical transport bandwidth is disclosed. In one of many possible embodiments, a system is provided for policy-based, on-demand provisioning of optical transport bandwidth. The system includes a layer-specific operation support subsystem (OSS) configured to manage network elements that form a sub-network over an optical transport network. The optical transport network provides bandwidth-on-demand provisioning capabilities. The layer-specific OSS includes one or more predefined bandwidth provisioning policies. The layer-specific OSS is configured to selectively request on-demand provisioning of bandwidth on the sub-network based on the predefined bandwidth provisioning policies.

  • MONOLITHIC OR HYBRID INTEGRATED OPTICAL INFORMATION PROCESSOR EMPLOYING A PLURALITY OF CONTROLLABLE OPTICAL TRANSFER FUNCTIONS AT FRACTIONAL FOURIER PLANES

    A monolithic or hybrid integrated optical information processor employing a plurality of controllable optical transfer functions at fractional Fourier planes between two optical imaging elements is described. The arrangement can be used to realize or closely approximate arbitrary non-positive-definite transfer functions of spatially-varying amplitude and phase. In various implementations, one or both of the optical imaging elements can comprise a lens or graded-index material. In some implementations, at least a portion of the arrangement is implemented in the form of a stack. Graded index material may lie between consecutive light modulating array elements. The controllable plurality of optical transfer functions are employed to create a controllable optical processor which can be used for image filtering and optical computations using complex-valued optical signal arithmetic. An image sensor may be included to transform the processed image into electrical output. Applications include optical computing systems and integrated optics.

  • Advanced Ultrasound Modulated Optical Spectroscopy And Its Application To Patient Monitoring

    The present disclosure describes systems and methods that use spatial modulation to focus light into a localized region of interest such as an individual blood vessel. In certain embodiments, acoustic modulation techniques, such as ultrasound pulse modulation, are used in conjunction with spatial modulation to achieve more precise measurements through otherwise scattering medium. The focused beam of light is capable of penetrating several centimeters of tissue to deliver measurements and images associated with individual blood vessels and other discrete vascular components.

  • COLOR TONE CORRECTING AGENT, SQUARYLIUM COMPOUND AND OPTICAL FILTER

    The present invention provides a color tone correcting agent having suitable heat resistance for use in an optical filter, a novel squarylium compound that is specifically preferable as the color tone correcting agent, and an optical filter including the color tone correcting agent. Specifically, the present invention provides a color tone correcting agent including a squarylium compound represented by the general formula (1), a novel squarylium compound which is represented by the general formula (4) and is preferable as the color tone correcting agent, and an optical filter including the color tone correcting agent. The general formula (1) and (4) are each as defined in the specification.

  • COVER FOR AN OPTICAL DISC DRIVE AND OPTICAL DISC DRIVE HAVING THE SAME

    A cover for an optical disc drive. The cover includes: a body having a top portion that is configured to cover a disc if the disc is inserted into the optical disc drive, and a pressure structure formed on the body and having an asymmetrical shape.

  • WAVEFRONT OPTICAL MEASURING APPARATUS

    An apparatus for measuring a wavefront of light traveling through test optics includes: a light source; a lenslet array where light from the light source travels through; a detector array configured to acquire a light intensity distribution through the lenslet array; and a processing unit, wherein the processing unit executes data processing with the acquired light intensity distribution, the data processing comprising an estimation process using a beamlet-based propagation model or a ray-based propagation model as a forward propagation model.

  • System and Methods for Energy-Based Sealing of Tissue with Optical Feedback

    An energy-based tissue-sealing system and method provide higher sealing quality by measuring and using optical feedback parameters that are directly correlated to structural changes of tissue. The tissue-sealing system includes a sealing energy source, an instrument having a mechanism for grasping and deforming the tissue and for delivering sealing energy to the tissue, a light source, optical sensors, and a controller for controlling parameters of the sealing energy generated by the sealing energy source based upon the optical parameters of the tissue structure sensed by the optical sensors. At the beginning of a sealing procedure, the controller may monitor an initial optical parameter of the tissue and select a target trajectory of tissue optical parameters based on the initial optical parameter. During the sealing procedure, the controller monitors at least one optical parameter of the tissue structure and controls at least one parameter of the sealing energy based on the at least one optical parameter.

  • TEXTILE-STRUCTURE OPTICAL COMMUNICATION INTERFACE DEVICE AND SYSTEM

    A textile-structure optical communication interface device includes a diffusing unit configured to diffuse an optical signal including information transmitted between information devices. Further, the textile-structure optical communication interface device includes a condensing unit configured to condense the optical signal. Further, a textile-structure optical communication interface system includes a textile-structure optical communication interface device configured to enable optical fibers to be woven with yarns and to transmit and receive information between information devices. Furthermore, the textile-structure optical communication interface system includes a signal processing unit configured to signal-process the information transmitted and received between the information devices.

  • Reconfigurable Optical Add/Drop Multiplexer and Reconfigurable Optical Add/Drop Multiplexing Method

    A reconfigurable optical add/drop multiplexer and a reconfigurable optical add/drop multiplexing method are provided. The reconfigurable optical add/drop multiplexer comprises: an optical processing unit for receiving a first optical signal containing a plurality of optical channels, processing the first optical signal to generate a second optical signal which is a part of the first optical signal, and outputting the second optical signal; and a coherent detection unit for performing a coherent detection on the second optical signal so as to separate from the second optical signal an optical channel contained therein, and outputting the optical channel. With the reconfigurable optical add/drop multiplexer and the reconfigurable optical add/drop multiplexing method, any number of degrees can be supported, and adding/dropping of an optical channel with any wavelength and any bandwidth to/from any direction can be achieved, so that requirements of being colorless, directionless, contentionless and gridless can be satisfied.

  • METHOD FOR ONU REGISTRATION IN A PASSIVE OPTICAL NETWORK

    Embodiments of the invention include a system for registering an optical network unit (ONU) installed in a passive optical network (PON), including a mobile terminal, a registration server, and an optical line terminal (OLT). The mobile terminal is configured to collect an ONU identification from the ONU, collect a subscriber identification, and transmit the ONU identification and the subscriber identification to a registration server via a communication system. The registration server is configured to receive the ONU identification and subscriber identification from the mobile terminal via the communication system, retrieve subscriber information from a subscriber database based on the subscriber identification, associate the ONU with the subscriber information, and transmit, to an optical line terminal, an association between the ONU and the subscriber information. The optical line terminal (OLT) is configured to serve as an endpoint for the ONU in the PON.

  • OPTICAL FIBER

    According to one example of the invention an optical fiber comprises: (i) a core comprising Al doped silica but essentially no Er or Yb, and having a first index of refraction n1; (ii) at least one F doped silica based cladding surrounding the core and having a second index of refraction n.sub.2, such that n.sub.1>n.sub.2, wherein the cladding comprises essentially of SiO2 and 0.2-5 wt % F; (iii) a hermetic carbon based coating surrounding said cladding, said hermetic coating being 200 to 1000 Angstroms thick; and (iv) a second coating surrounding said hermetic coating, said second coating being 5 .mu.m to 80 .mu.m thick.

  • Optical Coherence Tomography (OCT) Freeze Drying Microscopy

    A product critical temperature during freeze drying is determined. The product is imaged using optical coherence tomography ("OCT"). The product is freeze dried while the temperature of the product is measured. The product critical temperature is the temperature at which a product structure event occurs during freeze drying.

  • OPTICAL FIBRE SENSOR ASSEMBLY

    An optical fibre sensor assembly comprises a source of a plurality of different frequency substantially monochromatic signals (1, 2, 3, 4); a modulator connected to the output of the source to produce a train of output pulses of the monochromatic signals; a plurality of sensor sub-assemblies connected to the output of the modulator, each sub-assembly comprising an optical drop multiplexer (ODM) (13), a sensor array (14) comprising a plurality of sensor elements and an optical add multiplexer (OAM) (15); a wavelength demultiplexer (WDM), having an input coupled to the sub-assemblies output; a plurality of detectors, each detector having an input connected to receive a respective output of the WDM and providing at an output thereof a signal corresponding to a respective frequency of the modulated monochromatic signals; and an interrogation system, having a plurality of inputs connected such that each input receives the output signal from a respective detector.

  • METHODS AND SYSTEMS FOR OPTICAL CHARACTERISATION

    An optical device is described for irradiating at least one object in a medium. The optical device may be a microfluidics device, and comprises at least one integrated planar waveguide that enables providing sheet irradiation of objects in the medium. A characterization system including such an optical device and a corresponding method of characterizing an object or a fluid are described.

  • OPTICAL ELEMENT HAVING A PLURALITY OF REFLECTIVE FACET ELEMENTS

    An optical element for use in an illumination optical unit of an EUV microlithography projection exposure apparatus includes a plurality of reflective facet elements. Each reflective facet element has at least one reflective surface. In this case, at least one facet element is arranged in a manner rotatable about a rotation axis. The rotation axis intersects the at least one reflective surface of the facet element. With such an optical element, it is possible to alter the direction and/or the intensity of at least part of the illumination radiation within the illumination optical unit in a simple manner.

  • PAUSING DIGITAL READOUT OF AN OPTICAL SENSOR ARRAY

    Providing for pausing data readout from an optical sensor array is described herein. By way of example, an interruption period can be introduced into a readout cycle of the optical sensor array to suspend readout of data. During the interruption period, other operations related to the optical sensor array can be performed, including operations that are typically detrimental to image quality. Moreover, these operations can be performed while mitigating or avoiding negative impact on the image quality. Thus, greater flexibility is provided for global shutter operations, for instance, potentially improving frame rates and fine control of image exposure, while preserving image quality.

  • OPTICAL FILM

    Provided is an optical film which exhibits low internal haze, low internal scattering, and excellent moisture resistance though the film contains diacetylcellulose having excellent retardation-inducing properties. An optical film characterized by comprising: a cellulose acetate .alpha. which has a 6% viscosity of 70 to 250 mPas and a degree of acetyl substitution of 2.0 to less than 2.5; another cellulose acetate .beta. which has a 6% viscosity lower than that of the cellulose acetate .alpha. and a degree of acetyl substitution of 2.0 to less than 2.5; ester compound C which has 1 to 12 pyranose or furanose structures of at least one kind and in which all or a part of the OH groups of the structures are esterified; and polyester D represented by Formula (1). B-(G-A)n-G-B (1).

  • OPTICAL SHUTTER DIMMING HELMET VISOR

    Provided is a dimming helmet visor incorporating optical shutter technology therein for instantaneous conversion from a clear state to a dark state and vice versa. These visors find utility in helmets for anyone in changing lighting conditions outdoors, especially motorcyclists. The visor's optical shutter display is connected to a photodiode and a battery with both automatic and manual adjustment functionalities. A manual on/off switch is provided for power management. The photodiode responds to light intensity above a certain threshold and switches from a clear state to dark state in a matter of milliseconds once this threshold is reached.

  • Optical Window and Detection System Employing the Same

    An optical window for a detection system and method of employing the same. In one embodiment, the detection system includes an optical window configured to internally channel external incident radiation to an exit surface for emission. The detection system also includes a detector oriented to receive emitted radiation from the exit surface.

  • MERCHANT ORDERING SYSTEM USING OPTICAL MACHINE READABLE IMAGE REPRESENTATION OF INVOICE INFORMATION

    A system and method for assisting ordering and payment processing of an order invoice associated with a product selected by a customer. The system comprises collecting product data about the product and generates the order invoice information for use by at least an accounting system of the merchant. The system receives symbology information in an aggregated barcode associated with the order invoice, the symbology information including at least a portion of the order invoice information encoded using a coding scheme of a barcode. The system provides an image of the aggregated barcode to the customer for use in generating a transaction request for settlement of the order invoice, and receives a transaction response indicating transaction approval or transaction denial of the order invoice.

  • Semiconductor Wafer Bonding Incorporating Electrical and Optical Interconnects

    Methods for bonding semiconductor wafers requiring the transfer of electrical and optical signals between the bonded wafers and across the bonding interface. The methods incorporate the formation of both electrical and optical interconnect vias within the wafer bonding interface to transfer electrical and optical signals between the bonded wafers. The electrical vias are formed across the bonding surface using multiplicity of metal posts that are interfused across the bonding surface. The optical vias are formed across the bonding surface using multiplicity of optical waveguides each comprised of a dielectric material that interfuses across the bonding interface and having an index of refraction that is higher than the index of refraction of the dielectric intermediary bonding layer between the bonded wafers. The electrical and optical vias are interspersed across the bonding surface between the bonded wafers to enable uniform transfer of both electrical and optical signals between the bonded wafers.

  • OPTICAL RECEIVER FOR AMPLITUDE-MODULATED SIGNALS

    An optical receiver that uses a coherent optical quadrature-detection scheme to demodulate an amplitude-modulated optical input signal in a manner that enables the use of a free-running optical local-oscillator source. The optical receiver employs a signal combiner that combines, into an electrical output signal, the in-phase and quadrature-phase electrical signals generated as a result of the quadrature detection of the optical input signal. Depending on the frequency offset between the local-oscillator signal and the input signal, the electrical output signal produced by the signal combiner can be a desired baseband signal or an intermediate-frequency signal. The latter signal can be demodulated to recover the baseband signal in a relatively straightforward manner, e.g., using a conventional intermediate-frequency electrical demodulator coupled to the signal combiner.

  • POWER CONTROL IN AN OPTICAL NETWORK UNIT

    There are disclosed techniques for power control in an Optical Network Unit (ONU) of a Passive Optical Network (PON). In one embodiment, the supply of power to an optical transmitter is controlled in accordance with information defining a plurality of transmission windows during which data can be transmitted from the ONU, in order to achieve the following: (1) to provide power to the optical transmitter beginning at a predetermined time in advance of a transmission window to ensure a laser in the optical transmitter is ready to begin transmitting the data at the start of the transmission window; and (2) to refrain from providing full power to the optical transmitter between transmission windows when the duration of time between the transmission windows is greater than a predetermined length.

  • OPTICAL FIBRE CONNECTOR AND AN ASSEMBLY METHOD FOR THE SAME

    The present invention relates to an optical fiber connector whereby an operator can easily couple optical fibers on site, and to an assembly method for the same. More specifically the invention relates to: an optical fiber connector wherein a guide ferrule bush is provided between a ferrule and a coil spring so as to be able to solve a problem whereby a ferrule optical fiber between a ferrule body and a reinforcing sleeve is bent, and a problem whereby contact between the ferrule body and the ferrule optical fiber is broken due to frequent movement, when the ferrule moves within a range of movement provided for by a resilient member due to the resilient member; and to an assembly method for the same.

  • OPTICAL ELEMENT

    Disclosed is a silicon optical waveguide having a small optical loss and no polarization dependency. The silicon optical waveguide is formed on a silicon substrate with an embedded oxide film therebetween, the plane orientation of the surface of the silicon optical waveguide is the (110) plane, the plane orientation of the side wall is the (111) plane, and the recesses and projections of the side wall are planarized at an atomic level.

  • CUSTOMER INITIATED REMOTE OPTICAL NETWORK TERMINAL RESET SYSTEMS AND METHODS

    The disclosure relates to a system and method to allow an end user to remotely reset or reboot an optical network terminal (ONT) and/or residential gateway that has become unresponsive or otherwise needs to be reset. In various aspects, the end user may initiate a sequence of hook flash signals from a telecommunication device that causes an ONT control system to power cycle the ONT

  • Handheld Performance Tracking and Mapping Device Utilizing an Optical Scanner

    Disclosed is a golf performance tracking and mapping device that utilizes a handheld, portable device having an optical scanner for reading waypoints along a course map, cataloging strokes, distances and further for suggesting and cataloging club choices throughout a round. The data gathered during the round is utilized to create measurable data that can be utilized to create a portfolio of a specific round for posterity, or further for creating data that can be statistically analyzed for a specific user, wherein club ranges, weaknesses and strengths can be determined over a statistically significant period for performance tracking. The device includes a display and an internal global positioning system for tracking location. It is desired that the present tracking device require minimal user input beyond club scanning prior to subsequent swings.

  • Handheld Performance Tracking and Mapping Device Utilizing an Optical Scanner

    Disclosed is a golf performance tracking and mapping device that utilizes a handheld, portable device having an optical scanner for reading waypoints along a course map, cataloging strokes, distances and further for suggesting and cataloging club choices throughout a round. The data gathered during the round is utilized to create measurable data that can be utilized to create a portfolio of a specific round for posterity, or further for creating data that can be statistically analyzed for a specific user, wherein club ranges, weaknesses and strengths can be determined over a statistically significant period for performance tracking. The device includes a display and an internal global positioning system for tracking location. It is desired that the present tracking device require minimal user input beyond club scanning prior to subsequent swings.

  • RF COMMUNICATIONS DEVICE INCLUDING AN OPTICAL LINK AND RELATED DEVICES AND METHODS

    A communications device includes a transmitter device including an optical source configured to generate an optical carrier signal, and a modulator coupled to the optical source and configured to modulate the optical carrier signal with an input signal having a first frequency, an optical waveguide coupled to the transmitter device, and a receiver device coupled to the optical waveguide. The receiver device includes an optical splitter, a first waveguide path coupled to the optical splitter and configured to filter a sideband from the modulated optical carrier signal, a second waveguide path coupled to the optical splitter and configured to generate a selected sideband from selectable sidebands based upon the modulated optical carrier signal, and an optical-to-electrical converter coupled to the first and second waveguide paths and configured to generate an output signal including a replica of the input signal at a second frequency based upon the selected sideband.

  • OPTICAL ADD/DROP MULTIPLEXER

    An optical add/drop multiplexer including one or more optical drop multiplexers connected in free space or fused by optical fiber pigtails, a wavelength blocker with an input port connected to an output port of the optical drop multiplexer through the fusion of the fiber pigtails, one or more optical add multiplexers connected in free space or fused by fiber pigtails, a digital signal processor, an analog-to-digital signal converter, a digital-to-analog converter, and a plurality of electronic control and feedback loops for tuning and scanning an optical wavelength.

  • OPTICAL RECEIVER FOR RECEIVING LIGHT AND OPTOELECTRONIC MEASURING ARRANGEMENT

    The present invention relates to an optical receiver (1) for receiving alternating-light data signals and for storing electrical energy obtained from extraneous light, having a photodiode (2) for receiving light, which comprises extraneous light and an alternating-light data signal component with a higher frequency in comparison to the extraneous light, and for converting the light into a photocurrent (I.sub.P) which comprises a data signal current (I.sub.N) and an extraneous light current (I.sub.F) said receiver additionally comprises a coupling unit (3) for coupling in and separating the data signal current generated by the optical alternating-light data signal component from the extraneous light current generated by the extraneous light, an amplifying unit (4) for amplifying the data signal current and an energy storage unit (5) which is charged by the extraneous light current (I.sub.F) and which includes a circuit for increasing voltage, wherein the energy charged in the energy storage unit (5) is used for at least partially supplying the energy for the optical receiver (1) and/or for at least partially supplying the energy for a measurement arrangement (16) comprising the optical receiver (1).

  • TUNABLE RF FILTER DEVICE USING OPTICAL WAVEGUIDE PATHS WITH SPLITTER AND COMBINER PAIRS AND RELATED METHODS

    A tunable Radio Frequency (RF) filter device includes a tunable optical source generating an optical carrier signal, and a modulator coupled to the tunable optical source and modulating the optical carrier signal with an RF input signal. The tunable RF filter device may include first and second optical waveguide paths coupled to the modulator and having first and second dispersion slopes of opposite sign from each other, one or more of the first and second optical waveguide paths comprising an optical splitter and combiner pair therein, and an optical-to-electrical converter coupled to the first and second optical waveguide paths and generating an RF output signal with a frequency notch therein based upon the tunable optical source.

  • OPTICAL ELEMENT, LIGHT SOURCE DEVICE, AND OPTICAL ELEMENT PRODUCTION METHOD

    According to one embodiment, an optical element is provided with a paraelectric crystal, first and second pressers between which the paraelectric crystal is sandwiched, and fasteners. The paraelectric crystal has a periodic structure in which polarities are periodically inverted along a polarity period direction. The fasteners fix the first and second pressers to each other so that a predetermined pressure is applied in a direction intersecting with the polarity period direction, to the paraelectric crystal through the first and second pressers.

  • Display Device Having an Optical Display Field

    A first light source arranged behind a display field and configured to generate an elementary color or a secondary color from red, green and blue elementary colors for increasing safety of a display device having an optical display field, wherein the first light source is connected to an activation module which is configured to activate the first light source based on the desired color. A second light source is arranged behind the display field and configured to generate the elementary color or the secondary color from the red, green and blue elementary colors. The second light source is connected to the activation module which is configured to activate the second light source based on the desired color of the first light source, and a monitor is provided which is configured to identify an error or a fault on one of the light sources and to shutdown the faulty light source.

  • Apparatus for Measuring Optical Characteristics Including Position Detection

    An apparatus measuring optical characteristics including position detection is disclosed. A processor is coupled to a display. A first optical sensor makes a first measurement, and a second optical sensor makes a second measurement. A source of illumination and the first optical sensor determine a minimal distance between the apparatus and an external object such that illumination emitted by the source is not received by the first optical sensor when the apparatus is less than the minimal distance from the external object. A position of the apparatus with respect to an object and an optical property of light received by the apparatus are determined. A transparent member with a thickness less than the minimal distance may provide illumination external to the apparatus and receive light from external to the apparatus.

  • OPTICAL ELEMENT, LIGHT SOURCE DEVICE, AND OPTICAL ELEMENT PRODUCTION METHOD

    According to one embodiment, an optical element is provided with a paraelectric crystal, first and second pressers between which the paraelectric crystal is sandwiched, and fasteners. The paraelectric crystal has a periodic structure in which polarities are periodically inverted along a polarity period direction. The fasteners fix the first and second pressers to each other so that a predetermined pressure is applied in a direction intersecting with the polarity period direction, to the paraelectric crystal through the first and second pressers.

  • APPARATUS AND METHOD OF BIOMETRIC DETERMINATION USING SPECIALIZED OPTICAL SPECTROSCOPY SYSTEMS

    Methods and apparatuses for performing biometric determinations using optical spectroscopy of tissue. The biometric determinations that are disclosed include determination or verifications of identity, estimation of age, estimation of sex, determination of sample liveness and sample authenticity. The apparatuses disclosed are based upon discrete light sources such as light emitting diodes, laser diodes, vertical cavity surface emitting lasers, and broadband sources with multiple narrow-band optical filters. The multiple light sources are encoded in a manner that the tissue response for each source can be efficiently measured. The light sources are spaced at multiple distances from a detector to contribute differing information to the biometric determination task as do light sources with different wavelength characteristics. Apparatuses are disclosed that incorporate a spectral biometric sensor with a personal electronic device such as cellular telephones, personal digital assistants, wristwatches, electronic fobs for the purpose of providing secure biometric access to protected property.

  • OPTICAL NAVIGATION MODULES FOR MOBILE COMMUNICATION DEVICES

    The disclosure provides a navigation assembly having a compact design that reduces a depth dimension in a z-direction or along a z-axis that is substantially perpendicular to a front face of a mobile communication device. The navigation assembly includes an optical lens unitarily formed with a cover, the cover having an upper surface that receives user inputs thereon and a lower surface that receives the optical lens. A sensor array is provided in optical communication with the optical lens and a coupling structure is provided to mechanically couple the optical lens and the sensor array. The cover overlays a gap formed between the navigation assembly and adjacent keys to prevent contaminants such as liquids, dust, lint, or the like, from entering an interior of the mobile communication device. The cover also includes a decorative ring that defines a tracking window and outlines a perimeter of the underlying sensor arrays.

  • OPTICAL CONNECTOR

    An optical connector mainly includes a base and a mount. The base has a first slot. The base has a receiving space for arranging the optical component. The mount has an adapting end inserted into the first slot. A connecting port is formed on the adapting end. The base is connected with an external wire through the connecting port. The adapting end has an opening corresponding to the position of a tunnel of the base. Thus, when the external wire is inserted into the connecting port, the optical component can receive an optical signal from the external wire through the tunnel of the base and the opening on the mount.

  • Reducing Metal Pits Through Optical Proximity Correction

    A method includes retrieving first layouts of an integrated circuit from a non-transitory computer-readable medium. The first layouts include a via pattern in a via layer, and a metal line pattern in a metal layer immediately over the via layer. The metal line pattern has an enclosure to the via pattern. The enclosure is increased to a second enclosure to generate second layouts of the integrated circuit.

  • OPTICAL SYSTEM HAVING A PHOTONIC CRYSTAL STRUCTURE AND METHOD OF FABRICATION

    An optical structure includes an optical waveguide and at least one photonic crystal structure. The optical structure also includes a structural portion mechanically coupled to the optical waveguide and the at least one photonic crystal structure such that a region substantially bounded by the structural portion, the optical waveguide, and the at least one photonic crystal structure has a specified volume.

  • OPTICAL DEVICE, IN PARTICULAR FOR A MOTOR VEHICLE

    An optical device for automobile vehicles, notably a signalling and/or lighting device. The device comprises at least one surface-emitting light source, at least one lens, notably distant from the surface-emitting light source, disposed at least partially on the path of the light (R) emitted by the surface-emitting light source so as to produce an image of an object area of the surface-emitting light source.

  • OPTICAL DEVICE, IN PARTICULAR FOR A MOTOR VEHICLE

    An optical device for automobile vehicles, notably a signalling and/or lighting device. The device comprises at least one surface-emitting light source, at least one lens, notably distant from the surface-emitting light source, disposed at least partially on the path of the light (R) emitted by the surface-emitting light source so as to produce an image of an object area of the surface-emitting light source.

  • Optical Transmitter With Tunable Chirp

    An optical transmitter with chirp control includes an input polarizer having an input that receives an optical signal. The input polarizer polarizes the optical signal along an input polarization axis. A Mach-Zehnder modulator includes an optical input that is coupled to an output of the input polarizer and an electrical input that receives a modulation signal. The Mach-Zehnder modulator modulates the optical signal with the modulation signal. The input polarization axis of the input polarizer is chosen to achieve a desired chirp of the modulated optical signal. An output polarizer is coupled to the output of the Mach-Zehnder modulator. The output polarizer polarizes the modulated optical signal along a desired output polarization axis that combines TE and TM mode polarizations.

  • Optical Transmitter With Tunable Chirp

    An optical transmitter with chirp control includes an input polarizer having an input that receives an optical signal. The input polarizer polarizes the optical signal along an input polarization axis. A Mach-Zehnder modulator includes an optical input that is coupled to an output of the input polarizer and an electrical input that receives a modulation signal. The Mach-Zehnder modulator modulates the optical signal with the modulation signal. The input polarization axis of the input polarizer is chosen to achieve a desired chirp of the modulated optical signal. An output polarizer is coupled to the output of the Mach-Zehnder modulator. The output polarizer polarizes the modulated optical signal along a desired output polarization axis that combines TE and TM mode polarizations.

  • METHOD FOR PRODUCING LENTICULAR LENS, LENTICULAR LENS, OPTICAL ELEMENT AND THREE-DIMENSIONAL DISPLAY DEVICE

    Provided is a method for manufacturing a lenticular lens sheet to be used in a stereoscopic display, a projection screen, and the like without using a mold at low cost. A method of manufacturing a lenticular lens sheet, the lenticular lens sheet including a support substrate and a plurality of lenticular lenses formed on the support substrate, includes the steps of: (1) filling a transparent resin composition ink containing an ultraviolet-curable component of 90 wt % or more and having surface ink-repellency after curing with ultraviolet light to a lens area of an even-numbered array by an inkjet method; (2) curing the transparent resin composition ink obtained in the step (1) with ultraviolet light; (3) filling a transparent resin composition ink containing the ultraviolet-curable component of 90 wt % or more and being curable with ultraviolet light to a lens area of an odd-numbered array by an inkjet method; and (4) forming the plurality of lenticular lenses in the lens areas of the even-numbered array and the odd-numbered array by curing the transparent resin composition ink obtained in the step (1) and the transparent resin composition ink obtained in the step (3) with ultraviolet light.

  • ENCAPSULATING SHEET AND OPTICAL SEMICONDUCTOR ELEMENT DEVICE

    An encapsulating sheet is formed from an encapsulating resin composition which contains an encapsulating resin and silicone microparticles, and the mixing ratio of the silicone microparticles with respect to the encapsulating resin composition is 20 to 50 mass %.

  • System and Method for Nonlinear Optical Devices

    Systems for enhancing the sensitivity of detecting an optical signal using nonlinear optics and method of performing the same. In one embodiment, a single-photon detection system includes an optical amplifier realized in a waveguide, and a photodetector coupled to an output of the optical amplifier. A light detection and ranging system includes the optical amplifier coupled to an optical source and one photodetector. In another embodiment, a photodetection system includes a plurality of optical frequency converters, coupled to an optical source, that sequentially convert a wavelength of photons of the optical source to a final wavelength, and a single-photon photodetector coupled to the optical frequency converters to detect single photons produced by the optical source. In another embodiment, an optical sensor includes an optical pump, and a transducer including an optical ring cavity coupled to the optical pump and configured to utilize optical four-wave mixing to detect an external stimulus.

  • HYDROGEN PASSIVATION OF NONLINEAR OPTICAL CRYSTALS

    The present invention includes an exposure chamber configured to contain a passivating gas having a selected hydrogen concentration, the exposure chamber further configured to contain at least one NLO crystal for exposure to the passivating gas within the chamber, a passivating gas source fluidically connected to the exposure chamber, the passivating gas source configured to supply passivating gas to an interior portion of the exposure chamber, and a substrate configured to hold the NLO crystal within the chamber, the substrate further configured to maintain a temperature of the NLO crystal at or near a selected temperature, the selected temperature being below a melting temperature of the NLO crystal.

  • SUBSEA OPTICAL SWITCH

    An optical monitoring system includes a sensor network including a plurality of optical sensors. The optical switch module is disposed on a first side of a pressure barrier, coupled to the sensor network, and operable to select various subsets of the optical sensors responsive to a control signal. The sensor interrogation unit is disposed on a second side of the pressure barrier and operable to generate the control signal and receive an optical signal from a particular subset of the sensor elements selected by the optical switch module. The optical penetrator is coupled to the interrogation unit and the optical switch module and operable to communicate the optical signal through the pressure barrier. The inductive control unit is operable to inductively communicate the control signal and a power signal to the optical switch module through the pressure barrier.

  • System and Method for Nonlinear Optical Devices

    Systems for enhancing the sensitivity of detecting an optical signal using nonlinear optics and method of performing the same. In one embodiment, a single-photon detection system includes an optical amplifier realized in a waveguide, and a photodetector coupled to an output of the optical amplifier. A light detection and ranging system includes the optical amplifier coupled to an optical source and one photodetector. In another embodiment, a photodetection system includes a plurality of optical frequency converters, coupled to an optical source, that sequentially convert a wavelength of photons of the optical source to a final wavelength, and a single-photon photodetector coupled to the optical frequency converters to detect single photons produced by the optical source. In another embodiment, an optical sensor includes an optical pump, and a transducer including an optical ring cavity coupled to the optical pump and configured to utilize optical four-wave mixing to detect an external stimulus.

  • Optical Imaging System and Method, and Aperture Stop Assembly and Aperture Element

    An optical imaging system includes a birefringent element, a light modulating element, and a polarizer element. The birefringent element is configured for decomposing un-polarized light into first linear polarized light and second linear polarized light under different refractive indexes to respectively form a first focal length and a second focal length in the optical imaging system. The light modulating element is configured for modulating a state of polarization of the first and second linear polarized light in response to control signals. The polarizer element is configured for filtering out one of the modulated first and second linear polarized light for creating a single image.

  • OPTICAL SYSTEM AND METHOD TO MIMIC ZERO-BORDER DISPLAY

    A system and methods to extending the overall display area for a device. At or near the borders of a device, pixel pitch between adjacent pixels may be increased such that overall pixel placement may be provided closer to a border of a display of a device. In one embodiment, pixel drive circuitry may be located in the spacing between adjacent pixels. Additionally, various optical systems and techniques may be utilized to provide an appearance of a lack of a border around the display such as decreasing the size of border pixels, overdriving the border pixels, or utilizing a light pipe on a surface above the border pixels.

  • Optical power for self-propelled mineral mole

    Exemplary methods, systems and components disclosed herein provide propagation of light signals from an external source to a borehole mining mole which includes an optical/electric transducer configured to provide propulsive power for the borehole mining mole and its associated mineral prospecting tools. Some embodiments include one or more umbilicals connected from a remote source location to an onboard reel incorporated with the borehole mining mole. The umbilicals are spooled outwardly or inwardly from the onboard reel during traverse of the borehole mining mole along a path in an earthen environment.

  • UTILIZING OPTICAL BYPASS LINKS IN A COMMUNICATION NETWORK

    Optical By-Pass (OBP) links may be created by adding wavelengths between nodes on the network. The OBP may extend between any pair of nodes on the network. Intermediate nodes on the OBP are transient nodes and simply forward traffic optically. An OBP extends between a pair of nodes and, unlike express links, is created in such a manner that it does not affect the previous allocation of resources on the network. This enables capacity to be added between pairs of nodes on the network to alleviate congestion at a portion of the network, without changing other traffic patterns on the network. This enables inclusion of an OBP to be deterministic and of linear impact on the network. The OBP links may be statically provisioned or created on demand. Optionally, the OBP links may be crated to coincide with PBB-TE tunnels on the network.

  • METHOD AND DEVICE FOR FAST TUNING OF OPTICAL SOURCES

    A method and device are provided for fast, continuous tuning of an optical source. A first pump signal with a first pump frequency is input into a mixer along with a first seed signal having a first seed frequency. Within the mixer, the first pump signal and the first seed signal generate at least one idler having an idler frequency defined as two times the pump frequency minus the seed frequency. Shifting the pump signal across a frequency range at a sweep rate causes the idler frequency to be shifted by two times the frequency range at two times the sweep rate. The shifted at least one idler is mixed with the shifted pump signal to generate a first mix product that has two times the sweep rate and frequency range of the pump signal.

  • OPTICAL FILM, AND POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME

    The purpose of the present invention is to provide an optical film having a large phase difference value, small moisture-induced fluctuation in the phase difference value, small photoelastic coefficient and excellent bondability with a polarizer. The optical film includes a cellulose ester (A) which satisfy formulae (1) and (2) below and a vinyl-based polymer (B). A content ratio of the cellulose ester (A) and the vinyl-based polymer (B) is from 95:5 to 50:50 by mass, the vinyl-based polymer (B) is composed of a non-aromatic vinyl-based monomer having a solubility parameter of 17.5 (MPa.sup.1/2) or larger and smaller than 20.0 (MPa.sup.1/2) and a weight average molecular weight of the vinyl-based polymer (B) is from 500 to 10,000: where 1.0.ltoreq.X+.SIGMA.Y.sub.i<2.0 formula (1) 4.0.ltoreq.2.times.X+.SIGMA.(n.sub.i.times.Y.sub.i)<6.0. formula (2)

  • Method of Manufacturing an Optical System

    A method of calculating an optical system (OS), the optical system (OS) being identified by a function (OF), the optical system (OS) having a first part (F1) defined by a first equation (EF1) and a second part (F2) defined by a second equation (EF2), the method performed by: a generating step (GEN), in which a virtual optical system (VOS) is used to generate a virtual function (VOF); a modification step (MOD), in which the virtual function (VOF) is modified so as obtain the function (OF); a calculation step (CAL), in which the second equation (EF2) is calculated from the function (OF), and the first equation (EF1). A method of manufacturing an optical system (OS) is also disclosed.

  • ADHESIVE OPTICAL FILM, MANUFACTURING METHOD FOR THE SAME AND IMAGE DISPLAY DEVICE USING THE SAME

    A pressure-sensitive adhesive optical film of the invention comprises an optical film and a pressure-sensitive adhesive layer provided on the optical film, wherein the pressure-sensitive adhesive layer has a thickness (.mu.m) standard deviation of 0.12 .mu.m or less. The pressure-sensitive adhesive optical film makes it possible to reduce the problem of visible unevenness caused by a pressure-sensitive adhesive layer.

  • Controlling Differential Group Delay In Mode Division Multiplexed Optical Fiber Systems

    It has been discovered that within a group of optical fibers produced by methods designed to produce low Differential Group Delay (DGD), some optical fibers will show a positive DGD while others will show a negative DGD. That recognition allows optical fibers with excessive DGD to be combined in pairs, or other configurations, to produce transmission spans in which a positive (or negative) DGD partial span is compensated by a partial span of fiber with a negative (or positive) DGD. Pairs of optical fibers with positive and negative DGD coefficients respectively may be deliberately produced and assembled in a cable in a concatenated fashion to produce reduced overall DGD in long transmission spans.

  • SERVICE TRANSMISSION METHOD IN AN OPTICAL TRANSPORT NETWORK AND DEVICE AND SYSTEM FOR IMPLEMENTING THE METHOD

    Embodiments of the present disclosure disclose a service transmission method and a device and a system for implementing the method. The method includes: recognizing a type of a received client service, encapsulating an OTN service, and generating an OTN signal frame or a lower order ODU; querying a tag forwarding base to acquire forwarding information of the OTN signal frame or the lower order ODU; acquiring tag information, and inserting the tag information into an overhead of the OTN signal frame or the lower order ODU; and forwarding the OTN signal frame according to the forwarding information. Therefore, in the embodiments of the present disclosure, the forwarding and the transmission of the service may be performed in an OTN plane only, thereby reducing hardware modules of an MPLS plane.

  • Optical System for LEDs for Control of Stray Light

    Methods and apparatus for an optical system for LEDs for control of light output from the LEDs. A plurality of optical pieces may be provided with each being over one or more LEDs and configured to direct a majority of light output from such one or more LEDs toward a desired illumination direction. A shield array may be placed over the optical pieces and include a plurality of openings each sized to at least partially receive one of the optical pieces and a plurality of blocking shields extending upward from and provided partially over one of the openings and one of the individual optical pieces. The blocking shields block stray light rays that are transmitted from one of the individual optical pieces in a backlight direction away from the desired illumination direction.

  • Method and System for Determining One or More Optical Characteristics of Structure of a Semiconductor Wafer

    Determination of one or more optical characteristics of a structure of a semiconductor wafer includes measuring one or more optical signals from one or more structures of a sample, determining a background optical field associated with a reference structure having a selected set of nominal characteristics based on the one or more structures, determining a correction optical field suitable for at least partially correcting the background field, wherein a difference between the measured one or more optical signals and a signal associated with a sum of the correction optical field and the background optical field is below a selected tolerance level, and extracting one or more characteristics associated with the one or more structures utilizing the correction optical field.

  • SYSTEM AND METHOD FOR DETERMINING OPTICAL DISTRIBUTION NETWORK CONNECTIVITY

    A system and method for determining optical distribution network connectivity. In one embodiment, the system includes: (1) a transceiver configured to monitor at least one parameter and (2) a fiber bending device configured to introduce a bend into a particular fiber, the parameter exhibiting a corresponding attenuation when the bend is introduced and indicating a connectivity of the particular fiber.

  • ACCELERATED AGING OF PHOSPHORUS-DOPED OPTICAL FIBERS

    Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.

  • Method and Apparatus of Building a Coaxial Convergence Layer in Ethernet Passive Optical Network (PON) over Coaxial Network (EPoC)

    An apparatus comprising a data framer comprising a physical layer protocol stack comprising a coax convergence layer, a coax framing layer next to the convergence layer, wherein the coax framing layer is configured to decompose and assemble data packets in a coax network, a coax coding layer next to the coax frame layer, wherein the coax coding layer is configured to protect the coax transmissions from impairments, a coax modulation layer next to the coax coding layer, wherein the coax modulation layer is configured to modulate the data according to a coax physical layer (PHY), and a radio frequency layer next to the coax modulation layer and configured to interface to an electrical medium for a coaxial network.

  • High-Accuracy Centered Fractional Fourier Transform Matrix for Optical Imaging and Other Applications

    Methods for numerically generating a centered discrete fractional Fourier transform matrix on a computer, the centered discrete fractional Fourier transform matrix of size N by N where N is an odd integer. Centering is obtained by simple barrel roll operations on eigenvectors. High-accuracy is obtained by numerically calculating the eigenvectors of the discrete fractional Fourier transform matrix from a closed-form mathematical formula and then iteratively performing a Gram-Schmidt orthogonalization procedure until a resulting set of improved-orthogonal eigenvectors is produced that is sufficiently orthogonal.

  • SYSTEMS AND METHODS FOR FIBER OPTIC PARAMETRIC AMPLIFICATION AND NONLINEAR OPTICAL FIBER FOR USE THEREIN

    A high confinement nonlinear optical fiber is provided along with methods of parametric amplification for use thereof The nonlinear optical fiber may include a plurality of concentric layers which are configured to provide different guiding regimes to low-frequency and high-frequency components through transverse geometry and refractive index profiling, thus reducing waveguide dispersion. The resulting optical fiber provides a parametric device with phase-matching in any spectral region of interest, such that a fiber optic parametric amplifier (FOPA) implementing the optical fiber can amplify in any spectral window of interest. A narrow-band FOPA configured to minimize phase mismatching is also provided for use with the optical fiber, and may be implemented as a light source or a monochromator.

  • ARRANGEMENT FOR MOUNTING AN OPTICAL ELEMENT

    The invention relates to an arrangement for mounting an optical element, in particular in an EUV projection exposure apparatus, comprising a weight force compensation device (103) for exerting a compensation force on the optical element (101), wherein said compensation force at least partly compensates for the weight force acting on the optical element (101), wherein the weight force compensation device (103) has a passive magnetic circuit for generating a force component of the compensation force acting on the optical element (101), and wherein at least one adjustment element (880) is provided by means of which the force component generated by the passive magnetic circuit is continuously adjustable.

  • Optical Subchannel Routing, Protection Switching and Security

    The present invention includes novel techniques, apparatus, and systems for optical WDM communications. Tunable lasers are employed to generate subcarrier frequencies representing subchannels of an ITU channel to which client signals can be mapped. Client circuits can be divided and combined before being mapped, independent of one another, to individual subchannels within and across ITU channels. Subchannels may be independently routed to a single subchannel receiver filter, such that each subchannel detected at the receiver may come from a different source location. Network architectures and subchannel transponders, muxponders and crossponders are disclosed, and techniques are employed (at the subchannel level/layer), to facilitate the desired optical routing, switching, concatenation and protection of client circuits mapped to these subchannels across the nodes of a WDM network. Subchannel hopping may also be used to increase the optical network security.

  • OPTICAL POWER TRANSMISSION SYSTEM AND METHOD HAVING COUNTER-PROPAGATING CONTROL SIGNAL

    A system for delivering optical power over optical conduits includes at least one optical power source delivering multiple optical power forms over an optical conduit with a counter propagating optical control signal.

  • OPTICAL SYSTEMS AND ELEMENTS WITH PROJECTION STABILIZATION AND INTERACTIVITY

    Apparatus and method related to projections and/or computing devices are described. Projections may be made from multiple computing devices to create a presentation. Various other embodiments are described.

  • OPTICAL ANALYTE DETECTION SYSTEMS AND METHODS OF USE

    Various embodiments are drawn to systems and methods for detecting an analyte of interest in a sample including an optical sensor, a capture probe attached to a surface of the optical sensor wherein the capture probe is capable of binding to the analyte to form a duplex or complex, and an antibody capable of binding to the analyte, duplex, or complex. In several embodiments, systems and methods further include a particle attached to the antibody or capable of binding to the antibody. In several embodiments, systems and methods for analyte detection feature one or more of the following: high detection sensitivity and specificity, scalability and multiplex capacity, ability to analyze large analytes, and ability to detect or measure multiple individual binding events in real-time.

  • METHOD AND SYSTEM FOR OPTICAL STIMULATION OF NEURONS

    A method of stimulating neurons present in a living body is disclosed. The method comprises directing light to an artificial light absorbing medium implanted extracellularly at a target location having the neurons therein, wherein wavelengths and intensities of the light are selected so as to heat the light absorbing medium by light absorption. The heating is sufficient to stimulate neurons nearby the light absorbing medium. In some embodiments, the light is spatially modulating so as to encode a stimulation pattern therein.

  • Optical Connection Hitless Bandwidth or Spectrum Resizing

    A method and system are disclosed in which a signaling message conforming to a GMPLS signaling protocol and associated with an optical connection is generated and transmitted by a transmit node to a receive node to change the size of a connection bandwidth in a network. The message may include information indicative of a number of spectral portions which correspond to frequencies of selected ones of the plurality of optical signals, selected ones of the plurality of optical signals being available to carry data from the transmit node to the receive node; and information indicative of a change in the number of selected ones of the plurality of optical signals. The transmit node may resize the connection while data traffic continues to be transmitted over the connection in the Optical Transport Network without service disruption to the client attached to the connection being resized.

  • METHOD AND SYSTEM OF INCREASING SPATIAL RESOLUTION OF MULTI-DIMENSIONAL OPTICAL IMAGERY USING SENSOR'S INTRINSIC KEYSTONE

    A method and system for creating a high spatial resolution image from a multidimensional imagery is disclosed. The technique exploits an intrinsic spatial distortion of the sensor that acquired the imagery and uses it as additional information to increase spatial resolution of the imagery. The method comprises obtaining a baseline image from the multidimensional imagery; deriving n.times.m-1 sub-pixel shifted images from the multidimensional imagery, where n and m are spatial resolution increase factors in x and y directions respectively, integers and greater than 1; organizing the baseline image and the n.times.m-1 sub-pixel shifted images from the multidimensional imagery; fusing the organized images using iterative back projection (IBP) to generate a high resolution image; and outputting the generated high resolution image.

  • APPARATUS WITH INTERNAL OPTICAL REFERENCE

    An apparatus for inspecting a measurement object, comprising a workpiece support for supporting the measurement object and a measuring head carrying an optical sensor. The measuring head and the workpiece support are movable relative to one another. The optical sensor has an objective and a camera designed to capture an image of the measurement object. The objective has a light entrance opening and a light exit opening, and comprises a multitude of lens-element groups arranged in the objective between the light entrance opening and the light exit opening one behind another along a longitudinal axis of the objective. Furthermore, the apparatus has a reflection element and a calibration arrangement. The reflection element can selectively be introduced into a beam path running from the measurement object through the objective to the camera. The calibration arrangement is coupled into the beam path to the camera by means of the reflection element.

  • ELECTROACTIVE BIOPOLYMER OPTICAL AND ELECTRO-OPTICAL DEVICES AND METHOD OF MANUFACTURING THE SAME

    A method of manufacturing a biopolymer optical device includes providing a polymer, providing a substrate, casting the polymer on the substrate, and enzymatically polymerizing an organic compound to generate a conducting polymer between the provided polymer and the substrate. The polymer may be a biopolymer such as silk and may be modified using organic compounds such as tyrosines to provide a molecular-level interface between the provided bulk biopolymer of the biopolymer optical device and a substrate or other conducting layer via a tyrosine-enzyme polymerization. The enzymatically polymerizing may include catalyzing the organic compound with peroxidase enzyme reactions. The result is a carbon-carbon conjugated backbone that provides polymeric "wires" for use in polymer and biopolymer optical devices. An all organic biopolymer electroactive material is thereby provided that provides optical functions and features.

  • CONNECTOR OPTICAL LENS WITH ALIGNMENT FEATURES

    An optical lens of an optical connector includes alignment features for passive connection alignment. Fiber inserted into the lens is aligned with a fiber groove that restricts motion in at least one direction to align the fiber. The lens includes an alignment feature to passively align the lens with a mating alignment feature of a mating connector. The groove may, for example, be L-, V-, or U-shaped. The alignment feature can be a post with corresponding recess. Alignment can further be secured with a tab that constrains pivoting of the connectors when engaged.

  • Electro-Active Opthalmic Lens Having an Optical Power Blending Region

    A spectacle lens is disclosed. The disclosed lens provides a vision correcting area for the correction of a wearer's refractive error. The viewing correction area provides correction for non-conventional refractive error to provide at least a part of the wearer's vision correction. The lens has a prescription based on a wave front analysis of the wearer's eye and the lens can further be modified to fit within an eyeglass frame.

  • Resonant Optical Transducers for In-Situ Gas Detection

    Configurations for in-situ gas detection are provided, and include miniaturized photonic devices, low-optical-loss, guided-wave structures and state-selective adsorption coatings. High quality factor semiconductor resonators have been demonstrated in different configurations, such as micro-disks, micro-rings, micro-toroids, and photonic crystals with the properties of very narrow NIR transmission bands and sensitivity up to 10.sup.-9 (change in complex refractive index). The devices are therefore highly sensitive to changes in optical properties to the device parameters and can be tunable to the absorption of the chemical species of interest. Appropriate coatings applied to the device enhance state-specific molecular detection.

  • OPTICAL SENSOR HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH

    An optical sensor, a method of configuring an optical sensor, and a method of using an optical sensor are provided. The optical sensor includes an optical loop having a length and a laser source optically coupled to the loop. The laser source has a coherence length. Light from the source is transmitted to the loop as a first signal and a second signal counterpropagating along the loop. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after counterpropagating through the loop to generate a third signal. A ratio of the coherence length to the length of the loop is greater than 1.

  • METHOD AND DEVICE FOR OPTICAL FOCUSING

    A device for optically focusing a projection image projected by a projector includes a detector for controlled creation of at least one observation shot of the projection image over a time period, a processing unit for defining at least one image section within the projection image generated by the projector, where the image section is modulated over the time period with respect to the optical power and/or the optical spectrum thereof, and the at least one image section of the projection image is essentially synchronous compared with the corresponding respective image section of the observation shot, where the processing unit also calculates a variable derived from the comparison of the respective image sections and a control signal derived from the derived variable, and outputs the control signal to a focusing device of the projector.