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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...
7418202 Article having a birefringent surface and microstructured features having a variable pitch or angles for use as a blur filter  
An optical low pass filter or blur filter, and method of making the filters, using an article having a birefringent surface for refracting incoming light when used with an image sensor. The...
7408712 Polarization-selectively blazed, diffractive optical element  
A polarization-selectively blazed, diffractive optical element including multiple contiguous blaze structures extending along a given geometrical path. Each structure has a width perpendicular to...
7310183 Diffractive outcoupler for second harmonic generation  
A diffractive outcoupler, for use in a cavity of a laser, includes a surface phase grating for receiving radiation from a laser source and has rectangular grooves with a depth D, a first reflector...
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...
7268948 Optical element and optical scanning device using the same  
To obtain an optical element capable of obtaining uniform anti reflection characteristics over the whole optical surface having a finite curvature of the optical element, a plurality of convex...
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...
7252869 Microtextured antireflective surfaces with reduced diffraction intensity  
A microstructured antireflective texture is disclosed comprised of an engineered array of protuberances arranged on a non-periodic lattice. The average distance between said protuberances is in the...
7245803 Optical waveguide grating coupler  
An optical waveguide grating coupler for coupling light between a planar waveguide and an optical element such as an optical fiber. The optical waveguide grating coupler includes a grating...
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...
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...
7227689 Birefringence optical element and manufacturing method thereof  
A mask with an opening pattern is placed on a substrate, and etching is carried out by use of anisotropy etching of crystal. The opening pattern of the mask is composed of broken lines, each of...
7221847 Optical elements having programmed optical structures  
An optical element, such as a lightguide or an optical film, is formed with a predetermined, programmed pattern of optical structures. The optical structures may be arranged to selectively correct...
7195387 Device and method for emitting light with increased brightness using diffractive grating pattern  
A device and method for emitting light with increased brightness utilizes a lamp having a diffractive grating pattern. The diffractive grating pattern diffracts incident light that originates from...
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...
7184214 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...
7164534 Diffuser plate and method of making same  
An electromagnetic radiation diffuser, operative at extreme ultraviolet (EUV) wavelengths, is fabricated on a substrate. The diffuser comprises a randomized structure having a peak and valley...
7149030 Diffractive optical element and also optical arrangement comprising a diffractive optical element  
A diffractive optical element has a plurality of diffraction structures for a certain wavelength. These each have a width measured in the plane of the diffractive optical element and a height...
7149016 Optical element and scanning optical system having the same and image forming apparatus  
An optical element that can reduce Fresnel (surface) reflection on a lens surface to be a cause of flare or ghost, and a scanning optical system having the same are provided. A microstructure...
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...
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...
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...
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...
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...
7002747 Diffuser plate and method of making same  
An electromagnetic radiation diffuser, operative at extreme ultraviolet (EUV) wavelengths, is fabricated on a substrate. The diffuser comprises a randomized structure having a peak and valley...
6965464 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...
6937397 Diffractive optical element and optical system having the same  
Disclosed is a diffractive optical element which includes a plurality of diffraction gratings being made of materials having different dispersions and being formed in accumulation, wherein at least...
6927915 Diffractive optical element, and optical system and optical apparatus provided with the same  
A diffractive optical element of the blazed-binary grating type is disclosed, with which a high diffraction efficiency can be achieved over substantially the entire used wavelength region. The...
6926415 Reflective plate, method of making same, and reflective type liquid crystal display using the reflective plate  
A metal die having a reverse pattern of a irregular surface in which a height of a convex increases from the center toward the outer periphery is pressed onto a surface of a molding resin on a...
6906861 Light-diffracting binary grating structure  
A light-diffractive binary grating structure has a microscopic mesa structure ( 2 ) whose plateaux ( 5 ) are separated by valleys ( 4 ) of substantially rectangular cross-section, wherein the...
6876792 Phase mask for forming diffraction grating, and optical fiber and optical waveguide having diffraction grating duplicated using the phase mask  
The present invention relates to a precision phase mask for forming diffraction grating in optical fiber and optical waveguide, to provide them with nonlinear chirped grating for dispersion...
6873463 Diffractive optical element and optical system having the same  
Disclosed is a diffractive optical element which is made of at least two materials of different dispersions and which includes at least two diffraction gratings being accumulated one upon another,...
6839174 Relief type diffraction optical element, optical system comprising the same and mold for manufacturing the same  
A relief type diffraction optical element including a substrate made of an optical material, said substrate having formed on its surface a non-even width relief pattern which include a first zone...
6819460 Apparatus and methods for routing of optical beams via time-domain spatial-spectral filtering  
Apparatus and methods are disclosed for spatially routing an optical pulse (data pulse) of an electromagnetic radiation and containing a specific address temporal profile and possibly additional...
6816648 Integrated waveguide gratings by ion implantation  
Integrated semiconductor waveguide gratings, methods of manufacture thereof and methods of apodizing thereof are described. A semiconductor waveguide grating includes a substrate, a cladding layer...
6728036 Diffractive optical element and also optical arrangement comprising a diffractive optical element  
A diffractive optical element has a plurality of diffraction structures for a certain wavelength. These each have a width measured in the plane of the diffractive optical element and a height...
6724534 Diffractive optical element and scanning optical apparatus using the same  
Diffraction optical element used in a scanning optical apparatus as a scanning optical element has a diffraction grating formed on a substrate. The diffraction grating has a tilt portion for...
6692830 Diffractive pigment flakes and compositions  
Diffractive pigment flakes include single layer or multiple layer flakes that have a diffractive structure formed on a surface thereof. The multiple layer flakes can have a symmetrical stacked...
6671096 Diffractive optical element and an optical system having a diffractive optical element  
A diffractive optical element for white light is composed of a plurality of layers of optical materials and has a relief pattern constituting a diffraction grating formed at least at one cementing...
6643066 Tunable phase mask assembly  
A tunable phase mask assembly for use in photoinducing an optical wavelength filter in an optical waveguide. The phase mask assembly includes a phase mask having a length extending between two...
6643065 Variable spacing diffraction grating  
A variable spacing diffraction grating is fabricated using micro-electromechanical (MEMS) technology. An array of interconnected beam elements is fabricated into a diffraction grating and mounted...
6624943 Diffractive optical element and optical system having the same  
A diffractive optical element includes a plurality of laminated diffraction grating surfaces. Each of the diffraction grating surfaces is formed to have a sufficiently small grating thickness as...
6624942 Objective lens for optical pick-up  
An objective lens for an optical pick-up has a refractive lens element provided with a diffraction lens structure on at least one surface thereof. The diffraction lens structure has a plurality of...
6624941 Diffraction optical element  
A diffraction optical element is configured such that a plurality of annular zones having minute steps extending in a direction of the optical axis therebetween are formed on a base element. The...
6606151 Grating patterns and method for determination of azimuthal and radial aberration  
Methods and reticles for evaluating lenses are disclosed. In one instance, a reticle which permits light to pass therethrough is provided which includes a first surface with a grating profile...
6597763 Spectrometer arrangement  
A spectrometer arrangement is disclosed for the determination of a radiation wavelength of radiation emitted from a radiation source to be measured. The arrangement includes a diffraction grating...
6587272 Diffractive optical element  
A diffractive optical element is composed of a plurality of diffraction gratings which differ in dispersion from each other and are laminated while being spaced to enhance diffraction efficiency...
6560018 Illumination system for transmissive light valve displays  
Binary optics are used in an illumination system for a color projection display. In one embodiment a broad spectrum light source illuminates a multilevel optical phase element which disperses the...
6545808 Phase mask with spatially variable diffraction efficiency  
A phase mask ( 15 ) for modulating a collimated light beam passing therethrough, the light beam being diffracted to photoinduce a refractive index profile in a photosensitive optical medium, the...
Matches 1 - 50 out of 174 1 2 3 4 >