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7440158 |
Direct optical image projectors
An apparatus includes a reconfigurable spatial light modulator, a light source, and a transmission filter. The reconfigurable spatial light modulator is capable of producing spatially varying...
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7433564 |
Optical device for optical communication
An optical phase modulator made of lithium niobate or the like phase-modulates the output light of a single-wavelength laser light source 20 that emits CW light, and the phase-modulated light is...
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7431461 |
Light propagation characteristic control apparatus, optical display apparatus, light propagation characteristic control program, optical display apparatus control program, light propagation characteristic control method and optical display apparatus control method
Exemplary embodiments of the invention provide a light propagation characteristic control apparatus which realizes to extend the light-intensity dynamic range and the number of levels, and is...
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7428096 |
Optical pulse compressor, optical function generator, optical pulse compression method, and optical function generation method
A small-sized, high-functionality optical pulse compressor capable of generating a low-power, high-repetition-frequency ultrashort pulse train used for ultrafast optical communication and...
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7421171 |
Efficient terahertz sources by optical rectification in photonic crystals and metamaterials exploiting tailored transverse dispersion relations
A system and a method for generating terahertz (THz) radiation are provided. The system includes a photonic crystal structure comprising at least one nonlinear material that enables optical...
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7414769 |
Reconfigurable spatial light modulators
This invention relates to reconfigurable spatial light modulators (SLM) incorporating a scatter plate. Computer generated diffraction patterns or holograms may be loaded on the (SLM) either as a...
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7414767 |
Semiconductor optical device and semiconductor optical package using the same
A semiconductor optical device, which includes a semiconductor substrate, an electro-absorption modulator, and at least one optical device is monolithically integrated on the semiconductor...
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7412173 |
Apparatus for generating optical carrier suppressed return-to-zero
An apparatus for generating a Carrier-Suppressed Return-to-Zero (CS-RZ) signal is disclosed. The apparatus includes a mixer, a Low Pass Filter (LPF), a driver amplifier and a single external...
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7403623 |
High-rate quantum key distribution scheme relying on continuously phase and amplitude-modulated coherent light pulses
One aspect of the present invention is related to a quantum cryptographic scheme comprising at least one sending unit including a physical means of encoding and distributing a raw key in the...
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7394587 |
Apparatus having a photonic crystal
An apparatus, including a substrate, having an internal surface where at least a portion of the internal surface has a smoothly varying curvature in three orthogonal directions. The apparatus also...
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7379223 |
Modulator control system
An optical communications system comprising: an optical input and an output, a source of input signals in an asymmetric format and having a duty cycle, a modulator for modulating the input signals,...
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7376291 |
Free space optical isolator with stacked parallel polarizers
The present invention provides low cost methods and apparatuses for filtering out polarized light reflections in a free space optical isolator. Multiple polarizers having relatively poor extinction...
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7369290 |
Modulator bias control
Approaches to bias control are disclosed for an optical modulator that modulates an optical carrier with a data input signal. In one embodiment an electrical bias input signal provided to the...
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7369289 |
Optical modulation device and image display apparatus using the same
An optical modulation device is disclosed which can suppress production of a cause of degradation such as a void or hillock on a light illumination surface thereof and can be incorporated in an...
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7330253 |
Method and apparatus for radiation analysis and encoder
Method and apparatus for analyzing radiation using analyzers and encoders employing the spatial modulation of radiation dispersed by wavelength or imaged along a line.
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7324262 |
Optical shutter and light scanning apparatus employing the same
An optical shutter includes a cell having a transparent panel and a hydrophobic transparent insulation panel which are arranged to face each other, a transparent electrode formed on an outer...
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7321454 |
Apparatus for modulating one or both of spectral phase and amplitude of an optical signal
The invention includes a method and apparatus for modulating one or both of spectral phase and amplitude of a received optical signal. The apparatus includes a spatial dispersion mechanism for...
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7310177 |
Electro-optic reflective element assembly
A rearview mirror assembly for a vehicle includes an electro-optic reflective element with an overhang region at an edge region of a first substrate that extends beyond a corresponding edge region...
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7304781 |
Ultra broadband mirror using subwavelength grating
A sub-wavelength grating structure that has a very broad reflection spectrum and very high reflectivity comprising segments made of high refractive index material disposed on a layer of low...
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7289276 |
Illumination optical system, exposure device using the illumination optical system, and exposure method
In an illumination optical system constituted to uniformize the intensity distribution of illumination light by use of an optical integrator, the overall length thereof is shortened. The...
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7289256 |
Electrical characterization of interferometric modulators
Disclosed herein are methods and systems for testing the electrical characteristics of reflective displays, including interferometric modulator displays. In one embodiment, a controlled voltage is...
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7261843 |
Photochromic optical article
Describes a photochromic article, e.g., an ophthalmic photochromic plastic article, such as a lens, in which the article includes (1) a rigid substrate, e.g., a transparent substrate such as a...
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7256920 |
Electro-optic modulator
A modulator circuit ( 28 ) for directing a voltage across a modulator element ( 26 ) to modulate a beam ( 20 ) includes a first inductor L 1 that is electrically connected in parallel to the...
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7242508 |
Infrared modulator for spectrometer
The invention relates to an infrared modulator for spectrometer. It comprises a light source ( 1 ), a beam splitter ( 2 ) for splitting the light from the source into two beams, a first plane...
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7239454 |
Image display apparatus
An image display apparatus includes a diaphragm ( 9 b ) arranged at a pupil position. The shape of an aperture of the diaphragm ( 9 b ) is similar to the shape of a light source image formed by an...
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7236287 |
Pockels cell
The invention relates to a pockels cell comprising two spaced-apart cubical RTP crystals that have a square cross section, are located one behind another, and are oriented towards each other so as...
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7229576 |
Substituted phenanthropyrans
The present invention relates to specific photochromic phenanthropyrans as well as to their use in synthetic resin materials of all types, especially for ophthalmic purposes. In particular, the...
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7228014 |
System for reducing the electrical return loss of a lithium niobate traveling wave optical modulator with low characteristic impedance
An electro-optical modulator is disclosed that has a microwave input, chip with a thin film resistor or a lumped resistor located between an input RF connector and an RF electrode on a Lithium...
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7227687 |
Complex spatial light modulator
One embodiment relates to a spatial light modulator (SLM) for modulating light incident thereon. The SLM includes a plurality of pixels, each pixel including a plurality of phase shift elements....
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7227679 |
Light irradiation apparatus, light irradiation method, crystallization apparatus, crystallization method, device, and light modulation element
A light irradiation apparatus includes a light modulation element which modulates a phase of an incident light beam to obtain a V-shaped light intensity distribution having a bottom portion of a...
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7212331 |
Reciprocating optical modulator
A reciprocating optical modulator includes a continuous light path fulfilling an amplification function, an optical modulation part formed on the light path, a first optical band-pass filter and a...
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7201824 |
Hybrid optical multi-axis beam steering apparatus
An apparatus for precisely steering a beam of light by making use of a hybrid inter optical alignment that occurs when a beam steering mechanism is micro-machined with respect to a crystallographic...
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7196833 |
Apparatus for simultaneous OTDM demultiplexing, electrical clock recovery and optical clock generation, and optical clock recovery
An apparatus for simultaneous OTDM demultiplexing, electrical clock recovery and optical clock generation, and optical clock recovery using a traveling-wave electroabsorption modulator. The...
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7196832 |
Substrate for electrooptic device and method of manufacturing the same, electrooptic device, and electronic equipment
A substrate for an electrooptic device comprising a light-transmissive base member, a reflection layer formed on the base member so as to include each reflection portion and a corresponding...
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7190505 |
Electrochromic device having an improved fill port plug
An electrochromic device, comprising: (a) a first substantially transparent substrate having an electrically conductive material associated therewith; (b) a second substrate having an electrically...
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7184190 |
Electro-optic reflective element assembly
An electro-optic reflective element assembly includes a pair of substrates and an electro-optic medium sandwiched therebetween. Each of the pair of substrates includes at least one conductive or...
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7184189 |
Apparatus for simultaneous OTDM demultiplexing, electrical clock recovery and optical clock generation, and optical clock recovery
An apparatus for simultaneous OTDM demultiplexing, electrical clock recovery and optical clock generation, and optical clock recovery using a traveling-wave electroabsorption modulator. The...
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7177062 |
Display drive method and display apparatus
The present invention is directed to a display method of performing image display, which comprises outputting corresponding subfield data every plural subfields by pulse width modulation to thereby...
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7173753 |
Optical data receiver systems
An optical data receiver for the distribution and demodulation of compressed TDM data packages comprises, optical distributor means to which the data packages are applied for selective distribution...
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7170057 |
Image enhancement system and method for night goggles
A dichroic type narrow-band-pass filter is used as a beamsplitter inside a night vision goggle eyepiece. The filter is combined with appropriately aligned polarizers and liquid crystal type shutter...
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7167293 |
Silicon-based electro-optic phase modulator with reduced residual amplitude modulation
An arrangement for removing unwanted amplitude modulation from the output of an electro-optic phase modulator (formed within a silicon-on-insulator (SOI) system) includes resonant filters that are...
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7165851 |
Optical frequency linear chirp variable unit
A linear opto-frequency chirp amount variable apparatus using a dielectric multilayer film mirror, which does not require the optical axis to be realigned each time the amount of a chirp is to be...
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7162108 |
Planar lightwave circuit variable optical attenuator
The invention relates to a variable optical attenuator constructed as a Mach Zehnder planar lightwave circuit, particularly including a channel waveguide support structure for heat isolation and...
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7161725 |
Frequency locker
A method and assembly for frequency stabilization of an optical signal especially from a laser, the assembly ( 11 ) comprising beam splitter ( 15 ), a passive frequency discriminator ( 16 ), and a...
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7154658 |
Wavefront correction system
A wavefront correction system using a dual frequency liquid crystal spatial light modulator to vary phase relationships of a wavefront is disclosed. A light beam from the dual frequency liquid...
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7149024 |
Optical modulator module
The present invention provides an optical modulator module comprising: a chip carrier; a semiconductor optical modulator for modulating light based on an electronic signal; a strip conductor...
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7130108 |
Display members
A display member for use at a temperature greater than at least about 40° C. The display member includes an arrangement of a plurality of optically anisotropic rotatable elements comprising a...
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7116460 |
Modulation control
A modulator arrangement for modulating an optical signal using a quadrature phase shift key for use in an optical wavelength division multiplex (WDM) optical communications system comprising a...
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7116458 |
Coherent generation, conversion, and modulation of electromagnetic radiation using shock waves or solitons propagating through polaritonic or excitonic materials
An optical modulator includes a crystal structure that exhibits polaritonic or excitonic behavior. A shock wave propagates through the crystal structure so as to optically modulate and manipulate a...
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7106486 |
Optical modulator control system
An apparatus comprising a control system coupled to an optical modulator. The control system including an Radio Frequency (RF)/dither ratio unit coupled to the optical modulator, wherein the...
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