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| Number | Title | Issue Date |
| 8154802 | Chromatic diffractive optical element corrector, optical system including the same and associated methods An optical element may include a substrate including a diffractive structure having multiple periods, at least one period of the multiple periods having multiple steps, heights of the multiple steps non-monotonically increasing across the at least one period. The op... | 04/10/2012 |
| 8064138 | 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 diffraction grating, being composed of a plurality of diffraction gratin... | 11/22/2011 |
| 8040605 | 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 diffraction grating, being composed of a plurality of diffraction gratin... | 10/18/2011 |
| 8040606 | 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 diffraction grating, being composed of a plurality of diffraction gratin... | 10/18/2011 |
| 8035895 | 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 diffraction grating, being composed of a plurality of diffraction gratin... | 10/11/2011 |
| 8035896 | 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 diffraction grating, being composed of a plurality of diffraction gratin... | 10/11/2011 |
| 7675680 | Computer-generated hologram and its fabrication process, reflector using a computer-generated hologram, and reflective liquid crystal display The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given refer... | 03/09/2010 |
| 7463419 | Optoelectronic sensor The invention relates to an optoelectronic sensor comprising an integrated arrangement of a plurality of light emitting diodes arranged in the region of an optical receiving system for the illumination of a sensing region, with beam-shaping optical elements being as... | 12/09/2008 |
| 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 aspect ratio of the substructures varies locally within an individual dif... | 11/18/2008 |
| 7436490 | Exposure apparatus using blaze type diffraction grating to diffract EUV light and device manufacturing method using the exposure apparatus This invention generally relates to an exposure apparatus and an exposure method using EUV light. In one preferred form of the present invention, the exposure apparatus is arranged to expose a substrate to a pattern of an original by use of extreme ultraviolet light... | 10/14/2008 |
| 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 for a blue light beam (wavelength λ1) and a DVD with a base t... | 10/07/2008 |
| 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 from the grating structure is traded off against the polarization depend... | 09/02/2008 |
| 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 direction of extension greater than the Wavelength of the electromagne... | 08/05/2008 |
| 7376305 | Echelle gratings with low Polarization Dependent Loss (PDL) using metal coating on the reflecting facets only An Echelle grating has alternate first (1a) and second (1b) sets of facets (1). The first set of facets (1a) is operative to reflect incident light (4) for diffraction and the second set of facets (1b... | 05/20/2008 |
| 7339669 | Device for the analysis of the qualitative composition of gases A device for the analysis of the qualitative, optionally also the quantitative composition of gases, uses measuring light of known spectral composition that can pass through the gas to be analyzed and the gas can be caused to interact. A detector arrangement is pres... | 03/04/2008 |
| 7339734 | Polarization control element, manufacturing method of polarization control element, design method of polarization control element, and electronic equipment A manufacturing method of a polarization control element which is placed in a first medium and used and which is provided with a striped structure of a period shorter than a wavelength of light to be subject to control, the manufacturing method of a polarization con... | 03/04/2008 |
| 7339714 | Variable blazed grating based signal processing A light processing system includes an array of optical signal processing devices. The array of processing devices are operable to receive at least some of a first signal part and to modulate the first signal part based at least in part on a control signal received f... | 03/04/2008 |
| 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 illumination shape having angular scope element, wherein the angular sco... | 02/26/2008 |
| 7324195 | Planar waveguide based grating device and spectrometer for species-specific wavelength detection Planar waveguide based grating devices and spectrometers, for species-specific wavelength detection for example, are disclosed. A planar waveguide spectrometer apparatus may have a microfluidic channel or compartment microfabricated integrally with a planar waveguid... | 01/29/2008 |
| 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 light at different diffraction angles. In such a system, an order sort... | 01/08/2008 |
| 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 diffraction grating, being composed of a plurality of diffraction gratin... | 01/01/2008 |
| 7311400 | Determining clinical refraction of eye Eye refraction is measured to achieve desired quality via a selected vision characteristics. A characteristic of vision is selected to correlate to the desired quality of vision from a group of vision characteristics comprising acuity, Strehl ratio, contrast sensiti... | 12/25/2007 |
| 7303281 | Method and device for determining refractive components and visual function of the eye for vision correction A method and an instrument is provided for measuring aberration refraction of an eye with a first device for measuring the total aberration refraction of the eye and a second device for measuring the aberration refraction of the cornea of the eye. The component of a... | 12/04/2007 |
| 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 conventional planar waveguide reflection diffraction gratings while eliminating ... | 12/04/2007 |
| 7289258 | Light modulator having variable blaze diffraction grating The present invention relates, in general, to a light modulator having a variable blaze diffraction grating and, more particularly, to a light modulator having a variable blaze diffraction grating, in which a diffraction member rotates due to piezoelectric force so ... | 10/30/2007 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
| 7275397 | Method of molding a silica article Disclosed are high temperature free-flow mold for the production of near net-shape silica articles and method for the production of near net-shape silica articles. The mold is preferably made of graphite, preferably coated with SiC on the surfaces of the mold cavity... | 10/02/2007 |
| 7271957 | Computer-generated hologram and its fabrication process, reflector using a computer-generated hologram, and reflective liquid crystal display The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given refer... | 09/18/2007 |
| 7265656 | Vehicle imaging system A vehicle imaging system includes an imaging sensor, an imaging sensor bracket and an image processor. A vehicle mounting portion of the bracket is configured to mount at a mounting element for a license plate of the vehicle, and a sensor mounting portion of the bra... | 09/04/2007 |
| 7258915 | Flake for covert security applications Covert flakes having one or more symbols and/or a selected shape are used in a composition, such as ink or paint, to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the covert flakes are covert pigment f... | 08/21/2007 |
| 7256890 | Spectroscope and microspectroscope equipped therewith A spectroscope capable of suppressing the dimension and the cost with avoiding a problem caused by polarization dependency of the diffraction grating. The spectroscope includes a polarizing beam splitter plate 3 that divides the light from an input fiber 1... | 08/14/2007 |
| 7247826 | Optical pickup apparatus An optical path coupling member aligns an optical axis directed to a light condensing member of the first wavelength light having a shortest wavelength with that of the third wavelength light having a longest wavelength. A diffraction element condenses +2nd order di... | 07/24/2007 |
| 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 to be formed by means of the same device (102). ... | 07/17/2007 |
| 7241489 | Opaque flake for covert security applications Opaque flakes, such as pigment or bright flake used in paints and inks, have a selected shape and/or other indicia to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the opaque covert flakes match the vi... | 07/10/2007 |
| 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 provided on a surface of the substrate. As the antireflective structure, ... | 07/03/2007 |
| 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 diffraction gratins is integer multiples of a plurality of wavelengths, dif... | 06/26/2007 |
| 7233443 | Arrangement for WDM multiplexing and demultiplexing An arrangement for dispersing light comprises a blazed diffraction grating and a mirror. The blazed diffraction grating comprises a grating plane and a multiplicity of blazed facets. Each blazed facet is oriented at a blaze angle to the grating plane. The mirror cou... | 06/19/2007 |
| 7218449 | Optical device for scanning an optical record carrier An optical device for scanning an optical record carrier (20) has a radiation source (25) that can emit two radiation beams of different wavelength along different optical paths (28, 29). The emitted radiation is focused on the record carrier an... | 05/15/2007 |
| 7215850 | Waveguide plate and process for its production and microtitre plate A waveguide plate and a process for making the waveguide plate with a plate-like glass substrate (1), carrying a waveguiding layer (2), with at least one coupling grating on the surface carrying said waveguiding layer (2), which coupling grating... | 05/08/2007 |
| 7215471 | 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 illumination shape having angular scope element, wherein the angular sco... | 05/08/2007 |
