Matches 101 - 150 out of 744 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
7136227 Fresnel zone plate based on elastic materials  
A dynamically variable, amplitude grating based diffractive optic including: a substantially transmissive, elastic substrate; a substantially opaque, elastic material formed in a predetermined...
7136226 Front teleconverter lens system  
A front teleconverter lens system having superb optical performance with less production of aberration in spite of its compactness. The front teleconverter lens system includes, in order from an...
7133205 Atmospheric stabilizer filter and method  
A diffracting optical filter for use with telescopes provides a plurality of cells separated by opaque lines on an translucent substrate, the spacing of the cells proportionally spaced to match the...
7130124 Average pitch gratings for optical filtering applications  
A pitch averaging Bragg grating includes a plurality of grating peaks spaced by different pitch values. By selecting the different pitch values to have an average pitch value equal to a target...
7129183 Method of forming grating microstrutures by anodic oxidation  
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...
7126755 Method and apparatus for labeling using diffraction grating-based encoded optical identification elements  
A method and apparatus for labeling an item using diffraction grating-based encoded optical identification elements 8 includes an optical substrate 10 having at least one diffraction grating ...
7123415 Optical instrument and optical element providing expanded exit pupil  
The invention provides an optical instrument including means ( 1, 2 ) to produce an optical image to be viewed by an observer including a diffractive element ( 7 ) located at an intermediate focal...
7123414 Method for producing library  
A method for producing a library includes the steps of calculating a plurality of conditions for a reflection light from a periodic pattern by changing the sectional shape of the periodic pattern,...
7123413 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...
7119958 Diffraction grating element and optical pickup  
A diffraction grating element including a diffraction grating area which includes: a first area that is one of two areas into which the diffraction grating area is divided by a first straight line,...
7116478 Polarization beam splitter and optical system using the same, and image displaying apparatus, using the same  
In a conventional polarization beam splitter, it has been difficult to improve the angle-dependence characteristic of polarized beam splitting efficiency even if the number of layers is increased....
7114820 Backlighting light pipe for illuminating a flat-panel display  
The invention relates to a new light pipe ( 313 ) for providing backlighting ( 312 ) of a flat-panel display ( 311 ) by means of at least one light source so that the light pipe has at least one...
7110181 Method for generating electromagnetic field distributions  
This invention relates to a platform ( 11 ) and a method for generating electromagnetic field distributions. The invention relates in particular to optical sensors for measuring biological or...
7110180 Diffraction grating, method of fabricating diffraction optical element, optical pickup device, and optical disk drive  
A diffraction grating with periodically arranged protrusions and grooves at a relatively narrow pitch and improved diffraction efficiency is disclosed. The protrusions of the grating are made of a...
7106513 Diffraction grating-based encoded particle  
An encoded particle 8 includes a particle substrate 10; at least a portion of the substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive...
7102823 Diffractive security element having an integrated optical waveguide  
A diffractive security element ( 2 ) is divided into surface portions, having an optically effective structure ( 9 ) at interfaces embedded between two layers of a layer composite ( 1 ) of plastic...
7099086 Wavelength division multiplexing system and method using reconfigurable diffraction grating  
An improvement in a wavelength division multiplexer and/or a dense wavelength division multiplexer (WDM/DWDM) is achieved by incorporating an electronically reconfigurable diffraction grating...
7099085 Optical pick-up apparatus and semiconductor laser apparatus  
An optical pick-up apparatus and a semiconductor laser apparatus which can suppress reduction of optical utilization efficiency for the laser light emitted from the semiconductor laser element....
7088513 Diffraction element, optical head device including the diffraction element, optical information apparatus including the optical head device, system including the optical information apparatus and method of designing diffraction grating of the diffraction element  
A diffraction element includes a light-transmittable member and a diffraction grating formed on at least one face of the light-transmittable member. When a first laser beam having a first...
7088483 Holographic spatial laser beam shaper and method  
A system and/or method for spatial beam shaping of an incident laser beam. The system and/or method includes a laser beam source for providing the incident laser beam and a Bragg grating (BG)...
7085055 Diffractive optical system  
The invention relates to a diffractive optical system having a two-dimensional structure, which can be used as a phase shift mask for the fabrication of an optical element having a two-dimensional...
7085054 Diffraction grating element  
The present invention provides a diffraction grating element that allows the temperature control mechanism to be dispensed with or simplified. The diffraction grating element of the present...
7085051 Polarizer and optical device using the polarizer  
A polarizer for converting incident light beam into a linear polarization light beam has a base plate of a material of low linear expansion coefficient, high thermal conductivity or low...
7085028 Hologram recording apparatus, hologram recording method, and hologram recording medium  
A hologram recording apparatus, a hologram recording method and a hologram recording medium reduce noise components generated by a phase modulation type spatial light modulator, thus permitting...
7081215 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...
7075722 Diffractive optical element and optical system having the same  
In a diffractive optical element and a polarization separation element using this diffractive optical element, incident light can be effectively separated for the respective polarization directions...
7072114 Optical pickup using an optical phase plate and which is compatible with optical recording media of different types  
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an...
7068433 Focusing screen master and manufacturing method thereof  
Disclosed herein is a focusing screen master having a microlens array formed all over a flat substrate surface, the microlens array being constructed by arranging a plurality of types of...
7064899 Reduced loss diffractive structure  
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...
7057659 Image pickup device and image pickup optical system  
The invention relates to an optical system which, albeit being simple in construction, enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an...
7054065 Durable silver thin film coating for diffraction gratings  
A durable silver film thin film coated non-planar optical element has been developed to replace Gold as a material for fabricating such devices. Such a coating and resultant optical element has an...
7050236 Diffractive optical element and optical pickup apparatus  
The present invention relates to a diffractive optical element which has chromatic aberration capable of recording and reproducing without any problem even in the case of instantaneous wavelength...
7046444 Wave plate and optical device using the same  
The present invention provides a wave plate capable of obtaining preferable phase conversion characteristic over a wide wavelength range. The wave plate includes an aluminum oxide film having...
7046441 High transmittance sub-wavelength structure polarization module  
The present invention relates to a high-transmission polarization module composed of sub-wavelength structures, which comprises: a transmission substrate and a plurality of collimation units. The...
7046350 Device for calculating diffraction efficiencies of a diffraction lens, lens with grating element, and optical system for reading  
A device for calculating diffraction efficiencies of a diffraction lens divided into a plurality of regions, each region comprising at least one grating ring, comprises a first memory for storing...
7042642 Diffractive optical element  
A diffractive optical element includes a first diffractive element and a second diffractive element that is made of a material different from that of the first diffractive element and is cemented...
7042625 Light modulator having digital micro blaze diffraction grating  
Disclosed is a light modulator having a digital micro blaze diffraction grating. In the light modulator, a fine protrusion is formed on an edge of a lower surface of a diffraction member so that a...
7042620 Light modulator using near-field  
Disclosed is a spatial light modulator using a near-field. The spatial light modulator includes a light permeable substrate which has a predetermined first refractive index and allows incident...
7038853 Athermalized plastic lens  
A plastic lens includes refractive and diffractive optical apparatus configured to produce optothermal changes substantially canceling each other over a predetermined working temperature range to...
7027226 Diffractive optical element for extreme ultraviolet wavefront control  
A wavefront modulating optical element device employs two or more materials lithographically patterned with programmed thickness profiles. The spatially-varying thickness profiles are chosen to...
7019904 Diffraction grating element, production method of diffraction grating element, and method of designing diffraction grating element  
In a diffraction grating element 10 , between a first medium 11 and a fourth medium 14 , a second medium 12 and a third medium 13 are disposed alternately to form a diffraction grating. The...
7012750 Auxiliary light projection apparatus for auto focus detection  
An auxiliary light projection apparatus used for focus detection has a laser beam generating device and a diffraction plate for diffracting a laser light from said laser beam generating device. The...
7006290 Optical system and method of designing optical system  
An optical system includes a diffractive optical element and a refractive optical element. The diffractive optical element corrects a chromatic aberration flare component of wavelengths other than...
7002746 Security element comprising macrostructures  
A security element for sticking onto a document comprises a layer composite of plastic material and has embedded, optically effective structures of a pattern . The optically effective structures in...
6999235 Diffractive optical element, method of producing same, and optical apparatus  
A diffractive optical element simultaneously realizes a plurality of optical functions and is small in size and excellent in productivity. The diffractive optical element has a multilayer member...
6995909 Lens, optical head, optical information writing/reading apparatus and optical information recording medium writing/reading method  
Conventional lenses for DVD/CD compatible writing/reading are liable to CD jitter deterioration due to phase shifts in a central area. Setting a corresponding base material thickness of an...
6992825 Volume phase grating, a method for producing such a volume phase grating, an optical module and a semiconductor laser module using such a volume phase grating  
In a volume phase grating, a plurality of phase gratings for causing a refractive index of a substrate having an incident surface and a launched surface facing each other to be cyclically changed...
6992824 Efficient wave propagation for terahertz imaging and sensing  
A method of wave propagation from 100–10000 GHz. The currently disclosed method and apparatus adapts micro-opto-electro-mechanical systems (MOEMS) technologies and processes to construct Kinoform...
RE38943 Compound objective lens for optical disks having different thicknesses  
A compound objective lens is composed of a hologram lens or transmitting a part of incident light without any diffraction to form a beam of transmitted light and diffracting a remaining part of the...
6990276 Optical waveform recognition and/or generation and optical switching  
A planar optical waveguide has sets of diffractive elements, each routing between input and output optical ports diffracted portions of an input optical signal. The diffractive elements are...
Matches 101 - 150 out of 744 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >