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Match Document Document Title
7388696 Diffuser, wavefront source, wavefront sensor and projection exposure apparatus  
A wavefront source having a wavefront formation structure ( 4 a ) and a diffuser with a scattering structure ( 2 b ) in the beam path in front of or at the level of the wavefront formation...
7385761 Diffraction grating device and optical apparatus  
A diffraction grating device for splitting or coupling light beams permits the divergence of the light beams to be minimized easily. A first light beam is incident on a diffraction grating from the...
7372607 Apparatus for reducing drops in a transmission spectrum due to inter-pixel gaps  
The invention includes an apparatus for modulating an optical signal. The apparatus includes a spatial dispersion mechanism and a modulating mechanism. The spatial dispersion mechanism spatially...
7361878 Image display apparatus and image pickup apparatus with two dimensional scanning  
An image forming apparatus with a light source unit emitting a light beam optically modulated based on image/video information, a scanning unit for scanning the light beam emitted from the light...
7358470 Optical pickup  
An optical pickup with a reflective coating device is provided, including a laser diode (LD), an optical element, and a photo detector integrated circuit (PDIC). The LD emits 1-3 lights with...
7349158 Diffraction grating-based encoded micro-particles for multiplexed experiments  
Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a...
7348650 Element having microstructure and manufacturing method thereof  
A method of manufacturing an element having a microstructure of an excellent grating groove pattern or the like is obtained. This method of manufacturing an element having a microstructure...
7345828 Refractive-diffractive hybrid lens, in particular for beam shaping of high power diode lasers  
A cylindrical lens having a refractive optical element and a diffractive optical element is provided. The cylindrical lens can be fabricated cost effectively and precisely, and optical aberrations...
7345820 Optical pick-up apparatus  
A compatible optical pick-up apparatus, which records to and/or reproduce from both digital versatile disc (DVD)-type optical disks and compact disc (CD)-type optical disks for improving a signal...
7339752 Image pick-up lens system  
An image pick-up lens system from an object side to an image side includes an aperture stop ( 10 ), and a meniscus-shaped lens ( 20 ) having a concave surface on the object side and a convex...
7339738 Nanomechanical near-field grating apparatus and acceleration sensor formed therefrom  
A nanomechanical near-field grating device is disclosed which includes two sub-gratings vertically spaced by a distance less than or equal to an operating wavelength. Each sub-grating includes a...
7339737 Beam multiplier that can be used as an exit-pupil expander and related system and method  
A beam multiplier includes a beam-multiplying layer and an adjacent optical layer. The beam-multiplying layer is operable to generate output beamlets of light from an input beam of light, and the...
7336420 Diffractive optical element, illumination system comprising the same, and method of manufacturing semiconductor device using illumination system  
An illumination system including a diffractive optical element (DOE) having an uneven surface that produces an illumination shape. The DOE comprising an uneven surface that produces a multipole...
7330657 Method to demultiplex wavelengths of light  
An apparatus and method for demultiplexing multiple wavelengths of light. In one embodiment, an optical signal having a plurality of wavelengths is provided to an optical-to-electrical (OE) circuit...
7321466 High dispersion diffraction grating including multiple holographic optical elements  
A diffraction grating having multiple holographic optical elements (HOEs), including a Dickson grating and at least one other volume phase grating (VPG). In typical embodiments, the multi-HOE...
7319559 Spectral optical element  
The present invention targets a spectral optical element that outputs a light inputted at a predetermined incident angle to a predetermined direction depending on its wavelength. A spectral optical...
7319509 Attenuator for attenuating wavelengths unequal to a used wavelength  
There is provided an attenuator for attenuating electromagnetic radiation of wavelengths Unequal to a used wavelength, including a grating element having i) grating grooves that produce a grating...
7317575 Tunable dispersive optical system  
A novel dispersion optical system based on at least one grating is provided. The pitches of the grating are linearly modulated so that the incident light is dispersed into different monochromatic...
7315419 Dispersive element, diffraction grating, color display device, demultiplexer, and diffraction grating manufacture  
In a transmission grating as a dispersive element, diffraction efficiency is enhanced and manufacturing costs are considerably reduced. A dispersive element includes resin members for forming a...
7315407 Security system, particularly for valuable documents  
The invention relates to a security system especially for security documents, wherein a security element is provided in a carrier plane, that under incident light holographically reconstructs a...
7307786 Beam shaper  
A beam shaper intended for use in connection with a quasi-monochromatic light source and which is fabricated from a substantially transparent material as a transmission element guiding the...
7304797 Inputs and outputs for an optical multiplexer/demultiplexer utilizing the grating facet diffraction envelope  
The invention relates to a planar waveguide reflective diffraction grating for use in an optical device, such as a wavelength division multiplexer, providing an increased bandwidth over...
7301700 Polarization beam splitter and optical system using the same, and image displaying apparatus, using the same  
The polarization beam splitter of the present invention includes a polarized beam splitting layer having a structure in which a plurality of gratings parallel to a first direction are periodically...
7298553 Element for the combined symmetrization and homogenization of a bundle of beams  
The invention relates to an element for the combined symmetrization and homogenization of a beam of rays and to a method for designing an element of this type. One object of this invention is to...
7298533 Optical films for creating unique optical effects  
An optical layer comprises a sheet of material having a surface. The surface comprises a plurality of optical elements. The optical elements are comprised of microscopic patterns in the surface...
7297386 Antireflection structure  
An antireflection structure ( 10 ) comprises a base ( 1 ), and a finely roughened antireflection part ( 2 ) formed in a surface of the base ( 1 ). The finely roughened antireflection part ( 2 )...
7292517 Optical scanning device for use with multiple types of record carrier surfaces  
An optical scanning device for scanning of a first, second and third type of optical record carrier with radiation of a first wavelength λ 1 , a second wavelength λ 2 and a third wavelength λ 3...
7286292 Configurable diffractive optical element  
This invention relates to a configurable diffractive optical element comprising an array of diffractive sub-elements having a reflective surface, wherein each sub-element has a controllable...
7286291 Show-through security packaging system for digital media  
A system of visual authentication of digital media. A visual means is provided at the point of purchase for a user to verify that the source of software is genuine. An authentication image is...
RE39865 Method of fabricating Bragg gratings using a silica glass phase grating mask and mask used by same  
An index grating is imprinted in the core of an optical fiber using a specially designed silica glass phase grating mask. The phase mask is held in close proximity to the optical fiber. Laser...
7277640 Optical add/drop multiplexing systems  
The present invention overcomes problems associated with switch isolation, noise and crosstalk suppression, insertion loss, spurious reflections, wavelength tolerance, and compactness that are...
7271956 Diffractive optical element  
A diffractive optical element including a stack of first, second and third optical regions or a stack of first, second, third and fourth optical regions, a first relief pattern formed between the...
7269315 Apparatus for writing Bragg gratings and reflection unit used in the apparatus  
Provided is an apparatus for writing Bragg gratings and a reflection unit used in the same capable of readily adjusting an incident angle of light radiated from a light source, in order to write...
7268947 Diffractive optical element and optical head using the same  
A diffractive optical element emits substantially zero order diffracted light when light with a wavelength of 0.35 μm to 0.45 μm is incident and emits substantially first-order diffracted light...
7268946 Universal broadband polarizer, devices incorporating same, and method of making same  
A polarization dependent device suitable for effecting at least one polarization of a broadband portion of electromagnetic radiation incident upon the device is disclosed. This device includes a...
7268937 Holographic wavefront sensor  
A holographic wavefront sensor inclusive of a multiplexed hologram that can reconstruct one or more diffracted beams from a single object or input beam onto a distant image plane. The position of...
7265904 Optical security element  
The invention concerns an optical security element having a substrate layer, in which a first microstructure for producing a first optically perceptible effect is shaped region-wise in a surface...
7262915 Blazed diffractive optical element and projection objective for a microlithographic projection exposure apparatus  
A blazed diffractive optical element has a support and a plurality of blazed diffraction structures. The diffraction structures are applied on the support and are spaced apart by a locally varying...
7262898 Apparatus for reducing drops in a transmission spectrum due to inter-pixel gaps  
The invention includes an apparatus for modulating an optical signal. The apparatus includes a modulating mechanism comprising a plurality of modulating component arrays, each modulating component...
7256938 Method for making large scale multilayer dielectric diffraction gratings on thick substrates using reactive ion etching  
Methods of fabricating large size, high performance multilayer diffraction gratings having a thick substrate that take advantage of reactive ion etching during the fabrication process are provided...
7253933 Apparatus and method for the temporal profiling of short laser pulses with thick Bragg gratings  
A system and/or method for temporal profiling of an incident laser pulse. The system and/or method includes a laser beam source for providing the incident laser pulse and a Bragg grating (BG)...
7249853 Unpolished optical element with periodic surface roughness  
An optical sub-system has an optical element having a curved surface featured with a plurality of recurring surface tooling marks. The depth of any surface tooling mark is less than 0.2...
7248667 Illumination system with a grating element  
An illumination system, particularly for wavelengths ≦100 nm, with an object plane and a field plane, comprises a grating element and a physical diaphragm in a diaphragm plane, which is arranged...
7248409 Optical element, optical lens, optical head apparatus, optical information apparatus, computer, optical information medium player, car navigation system, optical information medium recorder, and optical information medium server  
An optical lens includes a hologram, a refractive lens, and a phase level difference. The hologram has a sawtooth shape grating having a sawtooth shape in cross-section, and generates +2nd-order...
7248408 Color display apparatus using one panel diffractive-type optical modulator  
Disclosed herein is a color display apparatus using a one-panel diffractive-type optical modulator. The color display apparatus includes a plurality of light sources, an illumination lens system, a...
7245432 Dual diffraction-grating device  
A diffraction grating device ( 100 ) has both reflecting ( 108 ) and transmitting ( 106 ) gratings inter leaved to allow both transmission diffraction patterns and reflection diffraction patterns...
7239448 Light quantity distribution control element and optical apparatus using the same  
A light quantity distribution control element includes a substrate of 20 mm×20 mm×3 mm made of a material that transmits light, such as optical glass or acryl, and a antireflective structure...
7237940 Light guide plate with subwavelength grating and backlight module using the same  
A light guide plate ( 30 ) has a light incident surface ( 305 ) for receiving light, a light emitting surface ( 301 ) for emitting light, a bottom surface ( 303 ) opposite to the light emitting...
7236302 Diffraction optical element  
In a diffraction optical element in which a plurality of diffraction gratings are laminated and the maximum difference of length among optical paths of light passing through the plurality of...
7230762 Polarization phase difference plate  
The object of the present invention is to provide an excellent-quality polarization phase difference plate that enables, by a simple structure: decrease in light loss and in oscillation of the...
Matches 1 - 50 out of 723 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >