Matches 1 - 50 out of 744 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
7453643 Blazed diffractive optical element and projection objective for a microlithographic projection exposure apparatus  
A diffractive optical element has a support and a plurality of diffraction structures. The latter are applied on the support and are binary blazed by being split into substructures so that the...
7452820 Radiation-resistant zone plates and method of manufacturing thereof  
Disclosed are radiation-resistant zone plates for use in laser-produced plasma (LPP) devices, and methods of manufacturing such zone plates. In one aspect, a method of manufacturing a zone plate...
7446954 Hybrid lens system  
A hybrid lens system includes: a first lens with positive diffractive power, a second lens with negative diffractive power, a third lens with positive diffractive power, and a fourth lens with...
7443587 DOE-based systems and devices for producing laser beams having modified beam characteristics  
Novel methods are disclosed for designing and constructing miniature optical systems and devices employing light diffractive optical elements (DOEs) for modifying the size and shape of laser beams...
7440188 Diffractive optical element  
A conventional diffractive optical element (DOE), which consists of repetition of a unit pattern , has an advantage of applicability of the Fast Fourier Transform algorithm to calculate...
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...
7436561 Hologram laser unit and optical pickup apparatus  
A laser light beam of a first wavelength which is polarized in a first polarizing direction, emitted from first and second semiconductor laser elements and reflected by an information recording...
7435979 Optical device and method of manufacture  
The present invention provides for a method of producing an optical device by means of electron beam lithography and including the step of varying the characteristics of the electron beam spot...
7433290 Complex objective lens, optical head, optical information apparatus, computer, optical disk player, car navigation system, optical disk recorder, and optical disk server  
A complex objective lens composed of a hologram and an objective lens, capable of realizing stable and high-precision compatible reproducing/recording of a BD with a base thickness of about 0.1 mm...
7433135 Image pick-up lens system  
A image pick-up lens system includes: a first lens with positive diffractive power, a second lens with negative diffractive power, a third lens with positive diffractive power, and a fourth lens...
7433125 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...
7433124 Illumination system to eliminate laser speckle and a single-panel projection system employing the same  
An illumination system designed to eliminate laser speckle and a single-panel projection system employing the same. The illumination system includes a laser light source to sequentially emit a...
7432974 Image pickup device and image pickup optical system  
An optical system enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system including, at least, an image pickup optical...
7430076 Diffraction element  
A diffraction element having concave/convex-like diffraction gratings in its two surfaces from which at least two separated light beams can be taken in the same direction without changing largely...
7422842 Reduced loss high efficiency diffractive and associated methods  
A sub-wavelength anti-reflective diffractive structure is incorporated with a base diffractive structure having a small period to form a high efficiency diffractive structure. In the high...
7420736 Method for determining optimum grating parameters for producing a diffraction grating for a VUV spectrometer  
A method for determining a set of grating parameters for producing a diffraction grating for a vacuum-ultraviolet spectrometer, the parameters used being the small and large radius of the toroidal...
7420735 Transmission type diffraction grating  
A transmission diffraction optical element is presented in which ridges having a roughly rectangular cross-section shape are disposed parallel to each other at a regular pitch at the surface of a...
7420734 Planar waveguide grating devices having controlled polarization dependent sensitivity and method of manufacturing thereof  
Diffraction gratings are formed from grooves each having a reflective facet and a non-reflective facet. The net reflection of TE (Transverse Electric) and TM (Transverse Magnetic) polarizations...
7420733 Electrically switchable polymer-dispersed liquid crystal materials including switchable optical couplers and reconfigurable optical interconnects  
A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance...
7405883 Optical component and method of manufacture of optical component  
An optical component or optical low-pass filter has two or more regions demarcated by differences in refractive indexes, in which a region having a refractive index different from the refractive...
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...
Matches 1 - 50 out of 744 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >