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7618147 |
Efficient illumination for display systems and in methods for displaying
A display system ( 100, 200, 300, 350, 400, 450 ) for displaying an image is described. The display system ( 100, 200, 300, 350, 400, 450 ) typically comprises one or a plurality of individual...
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7616851 |
Tunable wavelength filter device
A tunable wavelength filter device that includes a light wave circuit having an input light wave path, an output light wave path, and a plurality of reflector elements between the input light wave...
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7551818 |
High power optical fiber laser array holographic coupler manufacturing method
A chirped grating is made in a thin film layer or a glass layer for producing a holographic optical element within the layer well suited for use as an optical coupler for coupling side fired laser...
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7530698 |
Positioning device for a projection apparatus
A positioning device for positioning an integration rod module disposed in an optical path between a light source device and a projection lens within a projection apparatus includes a flexible...
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7492524 |
Zoom lens system, imaging apparatus, method for vibration reduction, and method for varying focal length
Providing a zoom lens system with a vibration reduction function, a high zoom ratio, and a wide angle of view, an imaging apparatus, a method for vibration reduction, and a method for varying a...
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7483605 |
Methods for optical attenuation and switching optical beams
Low loss, reliable variable optical attenuators and 1×2 switches and polarization insensitive low loss, reliable variable optical attenuators and 1×2 optical switches are described. In one...
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7453612 |
Optical device, and virtual image display
An optical device including an optical waveguide upon which a group of parallel light beams different in traveling direction from each other are incident and from which the group of parallel light...
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7440153 |
Backlight unit for flat panel display and flat panel display apparatus having the same
A backlight unit for a flat panel display and a flat panel display apparatus having the same. The backlight unit for a flat panel display includes a light source emitting light, a light guide panel...
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7387389 |
Image display system and method
An image display device includes an image processing unit, a light source assembly, an optical modulator assembly, and a projection lens assembly. The image processing unit is configured to receive...
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7359597 |
Birefringence control in planar optical waveguides
A planar optical waveguide has a set of diffractive elements and confines propagating optical signals in at least one transverse spatial dimension. Each diffractive element set routes, between...
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7324278 |
Black matrix light guide screen display
Provided is a black matrix light guide screen display. In a particular embodiment, provided are a plurality of aligned light guides, each having an input end, a midsection and a magnifying output...
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7292755 |
Optical resonator formed in a planar optical waveguide with a distributed optical structure
An optical apparatus comprises a planar optical waveguide having at least two reflectors. The planar optical waveguide substantially confines in at least one transverse spatial dimension optical...
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7286732 |
Distributed optical structures designed by computed interference between simulated optical signals
An optical apparatus comprises a planar optical waveguide and at least one set of diffractive elements formed in or on the waveguide. The waveguide is arranged to confine propagating optical...
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7268942 |
Method of making a self-aligned light guide screen
Provided is a method of making a self-aligned light guide screen. More specifically, in a particular embodiment, fabrication may commence by providing a first ribbon section of light guides with at...
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7256915 |
Switchable polymer-dispersed liquid crystal optical elements
Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements....
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7227675 |
Hologram recording medium, recording/reproducing apparatus and method therefor
A hologram recording medium in which data is recorded at a high density, the input of a reference beam to an area to which data is not to be recorded of a recording layer is prevented when...
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7224867 |
Holographic spectral filter
Method and apparatus are contemplated for receiving from an input, an optical signal in a volume hologram comprising a transfer function that may comprise temporal or spectral information, and...
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7220005 |
Projection type video display apparatus
An object of the invention is to achieve a high intensity, a compact structure, a cost reduction and a heat radiation of a liquid crystal panel, in a projection type video display apparatus...
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7206107 |
Method and system for beam expansion in a display device
An exit pupil extender wherein the relative amount of different color components in the exit beam is more consistent with that of the input beam. In order to compensate for the uneven amount in the...
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7193755 |
Optical image reader
An optical image reader includes a transparent light guide plate having an object placement surface, an illumination light source for emitting light to an end face of the plate, a holographic...
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7190859 |
Distributed optical structures in a planar waveguide coupling in-plane and out-of-plane optical signals
A slab optical waveguide confines in one transverse dimension optical signals propagating in two dimensions therein, and has a set of diffractive elements collectively arranged so as to exhibit...
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7184627 |
Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements
An optical wavelength grating coupler incorporating one or more distributed Bragg reflectors (DBR) or other reflective elements to enhance the coupling efficiency thereof. The grating coupler has a...
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7170142 |
Planar integrated circuit including a plasmon waveguide-fed Schottky barrier detector and transistors connected therewith
A planar integrated circuit includes a semiconductor substrate having a substrate surface and a trench in the substrate, a waveguide medium in the trench having a top surface and a light...
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7120334 |
Optical resonator formed in a planar optical waveguide with distributed optical structures
An optical apparatus comprises a planar optical waveguide having at least two sets of diffractive elements. The planar optical waveguide substantially confines in at least one transverse spatial...
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7116453 |
Optical processor
Method and apparatus are disclosed for optical packet decoding, waveform generation, and wavelength multiplexing/demultiplexing using a programmed holographic structure. A configurable programmed...
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7095537 |
Method and system for optical coupling using holographic recording media
A method for optical coupling comprises: includes providing a holographic recording media fixed relative to at least two optical elements; creating a hologram by transmitting light from each of the...
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7072538 |
Planar reconfigurable optical add/drop module
A reconfigurable optical add/drop module (ROADM) for dynamically adding or dropping various wavelengths of an optical signal without having to physically replace the module with a...
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7042604 |
Self-aligning holographic optical system and related methods
Systems and methods for making a self-aligning optical system are provided, Briefly described, in architecture, one such system for making an optical system, among others, can be implemented as...
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7026701 |
Schottky barrier photodetectors
A Schottky barrier photodetector comprises a waveguide structure formed by a thin strip of material having a relatively high free charge carrier density, for example a conductor or certain classes...
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7025461 |
Interactive display system having a digital micromirror imaging device
A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. A projector cooperates with a digital imaging device, e.g. a digital micromirror imaging...
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7013060 |
Optical cross-connect device
An optic switch for cross-connecting input light signals incoming from inlet fiber cables to outlet fiber cables is disclosed that makes use of a holographic filter ( 5 ) having a series of...
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7009743 |
Optical processor
Method and apparatus are disclosed for optical packet decoding, waveform generation and wavelength multiplexing/demultiplexing using a programmed holographic structure. A configurable programmed...
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7006266 |
Optical switching devices
The invention provides an optical switcing device, including a substrate having at least one polarization-selective multiplexing grating; at least one polarization-selective demultiplexing grating,...
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6987907 |
Tunable holographic drop filter with quasi phase-conjugate fiber coupling
The present invention is a method and apparatus for a rotating, tunable, holographic drop filter connected to a fiber optic source. The filter uses a quasi phase-conjugate optical system for a...
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6980338 |
Image-reproducing apparatus and image-reproducing method
An optical member 7 is bonded, at its rear side 7 b , to a holographic stereogram 6 . The front side 7 a of the optical member 7 consists of parallel triangular prisms. Illumination light ...
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6967755 |
Holographic ROM system including an alignment apparatus for aligning a holographic medium and a mask
A holographic ROM system includes an alignment apparatus for aligning a holographic medium for storing data and a mask with patterns of the data. The alignment apparatus has a beam irradiating unit...
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6956994 |
Method for manufacturing a FBG having improved performances and an annealing-trimming apparatus for making the same
A method for manufacturing a FBG having improved performances and an annealing-trimming apparatus for making the same are provided. The trimming and the annealing steps are advantageously combined...
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6904201 |
Phase-controlled fiber Bragg gratings and manufacturing methods
A fiber Bragg grating may be written at an arbitrary wavelength without extensive recalibration or reconfiguration of the writing equipment in some embodiments. A pair of writing beams may be used...
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6847761 |
Optical module and method of forming the optical module
An object beam divided by a light dividing means 12 is caused to enter a photo-refractive polymer layer 6 through an optical fiber 23 . On the other hand, a reference beam divided by the light...
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6833955 |
Compact two-plane optical device
An optical device for enlarging an eye box, the optical device comprising: (a) a first optical expander being carried by, or formed in, a first light-transmissive substrate engaging a first plane;...
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6823113 |
Grating interference device with adjustable resolution
A grating interference device with adjustable resolution has high stability and precision adjustment functions. The invention has two reflectors and a beam splitter. One of the reflector is...
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6801348 |
Method and system for recording of information on a holographic medium
There is disclosed a method for the holographic recording of data, wherein a hologram containing the date is recorded in a waveguide layer ( 3 ). The holograms are formed in a layer structure...
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6751019 |
Ultrathin mesh optical panel and a method of making an ultrathin mesh optical panel
An ultrathin mesh optical panel and a method of use and making are disclosed. One embodiment of the optical panel includes a plurality of optical waveguides, wherein each optical waveguide is...
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6750996 |
Waveguide, edge-lit illumination arrangement and display comprising such
A polarized light-emitting waveguide for use in an edge-lit lighting arrangement has polarization-selective outcoupling structure including at least a volume hologram for selectively diffracting...
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6731991 |
System for projecting light on a work surface to produce an image for tracing
A method and system of projecting light on a planar surface to produce an image for tracing is disclosed. The system includes a projector that has a light source and a signal conditioner that is...
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6724508 |
Internal reflection apparatus and method using a holographic optical element for a free space optical communication system
An apparatus for a free space optical communication system includes an element having a front surface and a back surface. A holographic optical element (HOE) is disposed to receive a light signal...
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6704472 |
Optoelectronic device having an integrated capacitor formed thereon and method of manufacturing the same
The present invention provides an optoelectronic device, a method of manufacture thereof and an integrated optoelectronic system incorporating the same. The optoelectronic device may be a tunable...
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6661940 |
Apparatus and method for rebroadcasting signals in an optical backplane bus system
An apparatus and method are provided for communicating optical signals between components attached to an optical backplane bus. Each component has a respective active coupler to receive and...
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6654532 |
Read-only laminated information recording medium and manufacturing method therefor
A laminated optical medium for read-only information recording has ultra-high memory capacity and reliably extracts desired information from laminated memories. Methods for low-cost mass production...
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6580529 |
Holographic optical devices
The invention provides a holographic optical device, including a light-transmissive substrate; a first holographic optical element carried by the substrate; at least one second holographic optical...
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