Class / Patent application number | Description | Number of patent applications / Date published |
359572000 | Reflection grating (e.g., retrodirective) | 38 |
20080259457 | OPTICAL ELEMENT, MASTER PROTOTYPE, RESIN MASTER, RESIN MOLDED ARTICLE AND METAL MOLD - For generation of optical elements, a master prototype, a resin master, a resin molded article or a metal mold is used. In the master prototype, the resin master, the resin molded article or the metal mold, a fine relief structure is formed on a plane through which an object light is transmitted at a pitch smaller than a wavelength band of the object light, an identification pattern region is disposed in a part of a region where fine relief structure is formed, and in the identification pattern region, a state of the fine relief structure is different from that in the other region. An actual manufacturer of the master prototype, the resin master, the resin molded article or the metal mold can be identified by physically verifying the identification pattern region. | 10-23-2008 |
20090034080 | OPTICAL SYSTEM - The invention concerns an optical system. The optical system comprises an input for receiving an optical signal, a predetermined output plane, and a diffraction grating for separating the optical signal received at the input into spectral components thereof. The grating has a diffraction surface, which is formed by a photolithography process. | 02-05-2009 |
20090059375 | Grating Device with Adjusting Layer - A reflection grating device with a continuous non-reflecting dielectric adjusting layer disposed between a grating structure and one or more continuous reflecting layers is disclosed that operates in an order of interest, such as the 1 | 03-05-2009 |
20100128348 | WAVELENGTH SWEEP CONTROL - Methods and apparatus for the active control of a wavelength-swept light source used to interrogate optical elements having characteristic wavelengths distributed across a wavelength range are provided. | 05-27-2010 |
20100177390 | WAVELENGTH DEPENDENT OPTICAL ELEMENTS AND APPLICATIONS THEREOF - The present invention provides an optical element operable to display a plurality of distinct images when irradiated with various wavelengths of electromagnetic radiation. The ability to output a plurality of distinct images can permit the use of optical elements of the present invention in a variety of apparatus and imaging applications. | 07-15-2010 |
20100177391 | Optical device, laminate and labeled article - A special visual effect is achieved. An optical device includes a light-reflecting interface provided with a first relief structure including first recesses or protrusions arranged two-dimensionally, the first relief structure emitting a first diffracted light when illuminated with a light, and a light-transmitting interface disposed in front of the light-reflecting interface and having a reflectance smaller than that of the first interface, the light-transmitting interface being provided with a second relief structure including second recesses or protrusions arranged two dimensionally, and the second relief structure emitting a second diffracted light when illuminated with the light. | 07-15-2010 |
20100202057 | DISPERSIVE OPTICAL DEVICE WITH THREE-DIMENSIONAL PHOTONIC CRYSTAL - The invention relates to a dispersive optical device with a three-dimensional photonic crystal. | 08-12-2010 |
20110080642 | DISPERSION ELEMENT, SPECTRAL DEVICE, AND WAVELENGTH SELECTIVE SWITCH - A dispersion element includes a prism having a first transmission surface and an oppositely disposed second transmission surface, and an optical element having a third transmission surface and an oppositely disposed diffraction optical surface on which a diffraction grating is arranged. The prism and the optical element are integrated into one body by cementing the first transmission surface to the third transmission surface. The third transmission surface and the diffraction optical surface are non-parallel to each other in a plane perpendicular to grooves of the diffraction grating. | 04-07-2011 |
20120038986 | PATTERN PROJECTOR - A pattern projector, comprising a light source, configured to emit a beam of light. A transparent substrate, which has a pair of mutually-opposed planar surfaces is configured to receive and propagate the beam within the substrate by total internal reflection between the planar surfaces. The transparent substrate comprises a diffractive structure that is formed on one of the planar surfaces and is configured to direct at least a part of the beam to propagate out of the substrate in a direction that is angled away from the surface and to create a pattern comprising multiple interleaved light and dark areas. | 02-16-2012 |
20120087007 | LIGHT-GUIDING SUBSTRATE AND OPTICAL SYSTEM PROVIDED WITH SAME - Provided is a light-guiding substrate that can propagate light, which has been emitted by means of a light emitting device, in a confined state with an efficiency as high as possible. An optical system provided with the light-guiding substrate is also provided. The light-guiding substrate ( | 04-12-2012 |
20120092770 | NON-PERIODIC GRATINGS FOR SHAPING REFLECTED AND TRANSMITTED LIGHT IRRADIANCE PROFILES - Embodiments of the present invention are directed to planar sub-wavelength dielectric gratings that can be configured to control the beam profile of reflected and transmitted light. In one embodiment, a grating ( | 04-19-2012 |
20120140328 | OPTICAL ELEMENT WITH LOW SURFACE FIGURE DEFORMATION - A reflective optical element includes a body with a first reflective surface of a high precision geometrical form, which can be used for reflecting light in a wavelength range less than 50 nm in an EUV-lithographic projection exposure system. The body includes first and a second non-reflecting surfaces. Further, the body includes a single connection area formed on the first non-reflecting surface with at least one fixation surface inside the connection area for fixing the entire optical element directly or indirectly to at least one bearing surface of a bearing element. The second non-reflecting surface is different from the single connection area formed on the first non-reflective surface. The second non-reflecting surface at least partly surrounds the single connection area. At least one stress relief recess is formed into the body. The stress relief recess at least partly separates the first non-reflective surface from the second non-reflecting surface. | 06-07-2012 |
20120257279 | GRATING BASED TUNABLE FILTER - In a grating based tunable filter, an input beam that includes multiple wavelengths is directed into an input fiber of a circulator. The beam is collimated and then is reflected by a rotationally actuated mirror. The beam is then magnified and propagates onto and through a transmission diffraction grating which causes the different wavelengths of the transmitted beam to deflect into different angles. The wavelengths propagate onto and are reflected by a mirror and only a small portion of the wavelength spectrum of the transmitted beam will be reflected back along the incoming path and then propagate to the output fiber | 10-11-2012 |
20120268820 | COLOR FILTER FILM, GRATING STRUCTURE AND DISPLAY MODULE - A grating structure used on a color filter film of a display module is disclosed in the invention. The grating structure is disposed on a substrate of the color filter film. The grating structure includes a plurality of optical transparent layers and an optical reflection layer. The optical transparent layers are stacked on the substrate in sequence. Each of the optical transparent layers has a different refractive index from the other optical transparent layers. The optical reflection layer is disposed over the optical transparent layers. | 10-25-2012 |
20130027776 | CONTROLLING PHASE RESPONSE IN A SUB-WAVELENGTH GRATING LENS - A sub-wavelength grating device having controlled phase response includes a grating layer having line widths, line thicknesses, line periods, and line spacings selected to produce a first level of control in phase changes of different portions of a beam of light reflected from the grating layer. The device also includes a substrate affixed to the grating layer that produces a second level of control in phase changes of different portions of a beam of light reflected from the grating layer, the second level of control being accomplished abrupt stepping of the substrate in a horizontal dimension, ramping the substrate in a horizontal dimension, or changing the index of refraction in a horizontal dimension. | 01-31-2013 |
20130182327 | DIFFRACTIVE OPTICAL ELEMENT AND MEASUREMENT DEVICE - Disclosed are a diffractive optical element and a measurement device that are capable of reliably suppressing occurrence of a zero-order diffracted light beam and generating light spots in a wide range. The diffractive optical element has concave and convex portions and diffracts incident light in two dimensions to generate diffracted light. When a maximum diffraction angle with reference to an optical axis of the incident light is an angle range θ, the angle range θ is 7.5° or greater, and diffraction efficiency in a zero-order diffracted light beam is 5% or less. | 07-18-2013 |
20130229712 | SANDWICHED DIFFRACTIVE OPTICAL COMBINER - An optical combiner includes a two-dimensional (“2D”) array of three-dimensional (“3D”) diffraction element shapes disposed in a first side of a base sandwich layer. Partially reflective elements coat each of the 3D diffraction element shapes. The partially reflective elements collectively form a reflective diffraction grating having magnifying optical power for image light incident on the reflective diffraction grating through an eye-ward side of the optical combiner. A planarization sandwich layer is disposed over the partially reflective elements and has an index of refraction substantially equal to that of the base sandwich layer such that external scene light incident through the external scene side passes through the optical combiner substantially without diffraction while the image light incident through the eye-ward side is reflected and magnified via the reflective diffraction grating. | 09-05-2013 |
20130271838 | OPTICAL DEVICE USING DOUBLE-GROOVE GRATING - Optical devices using double-groove diffraction gratings having periodic sets of TiO | 10-17-2013 |
20130279004 | Highly Compliant Resonant Diffraction Gratings, And Methods And Use Thereof - Highly-compliant polymer-based resonant diffraction gratings, and methods of use thereof, are provided. In one illustrative embodiment, an amount of pressure applied to a grating surface may be determined by straining a grating, adapted to move into a plurality of pitches, to an applied pitch in the plurality of pitches in response to an application of strain onto a surface adjacent the grating. Electromagnetic radiation comprising a plurality of wavelengths may be applied to the grating, and a resonance wavelength, in the plurality of wavelengths, may be identified while the strain is applied to the grating. The amount of strain applied to the grating surface may then be determined based on the resonant wavelength. | 10-24-2013 |
20130293962 | IRRADIATION MODULE FOR A MEASURING APPARATUS - An irradiation module for a measuring apparatus is provided. The irradiation module is light-conductive, is configured as a cohesive body and comprises a beam-splitting surface arranged within the irradiation module for splitting an incoming measuring beam into two partial beams. Furthermore, the irradiation module comprises an optical diffraction grating for interaction with a first of the two partial beams and a reflection surface for reflecting the second partial beam. | 11-07-2013 |
20140118830 | OPTICAL GRATING INCLUDING A SMOOTHING LAYER - An apparatus and method pertaining to an optical grating are disclosed herein. In one embodiment, in response to a light incident on the optical grating, a first component of the light at a first wavelength is selectively reflected while a second component of the light at a second wavelength is selectively rejected. A reflectance efficiency corresponding to the selective reflection of the first component of the light being a function of a surface roughness of an intermediate layer included in the optical grating. And outputting the selective reflection of the first component of the light at the first wavelength to an optical component included in an extreme ultra violet (EUV) lithography system. The first wavelength being an EUV wavelength and the reflectance efficiency maximized at the first wavelength. | 05-01-2014 |
20140126061 | OPTICAL ELEMENT AND PRODUCTION OF SAME - An optical element includes a structured carrier layer having a macrostructure at a main surface and a layer of cured material. The layer of cured material includes an optically smooth surface facing away from the main surface, a macrostructure surface of the surface being dependent on the macrostructure of the carrier layer and on a layer thickness profile of the layer. | 05-08-2014 |
20140285892 | OPTICAL SECURITY COMPONENT HAVING A REFLECTIVE EFFECT, MANUFACTURE OF SAID COMPONENT, AND SECURED DOCUMENT PROVIDED WITH SUCH A COMPONENT - According to one aspect, the invention relates to an optical security component ( | 09-25-2014 |
20140300968 | Cascade Method and Apparatus for Generating Increased Duality Modulation of Electromagnetic Radiation - A method and apparatus for increasing duality modulation of electromagnetic radiation beyond levels achievable by individual duality modulation generators where duality modulation imparts to radiation a disproportion of irradiance and wave intensity. Various techniques are disclosed for configuring a multiplicity of individual duality modulation generators in a cascade such that initially input radiation acquires cumulative increments of duality modulation upon traversing the cascade of individual generators. | 10-09-2014 |
20140334003 | COMBINATION OPTICAL FILTER AND DIFFRACTION GRATING AND ASSOCIATED SYSTEMS AND METHODS - Optical components and systems comprising combined optical filters and diffraction gratings are generally described. In certain embodiments, an optical filter is in contact with a diffraction grating. In certain embodiments, the optical filter and the diffraction grating can be used to diffract and direct a first portion of electromagnetic radiation incident upon the grating and filter toward a receiver while filtering a second portion of the electromagnetic radiation incident upon the grating and filter. | 11-13-2014 |
20140334004 | COMBINATION OPTICAL FILTER AND DIFFRACTION GRATING AND ASSOCIATED SYSTEMS AND METHODS - Optical components and systems comprising combined optical filters and diffraction gratings are generally described. In certain embodiments, an optical filter is in contact with a diffraction grating. In certain embodiments, the optical filter and the diffraction grating can be used to diffract and direct a first portion of electromagnetic radiation incident upon the grating and filter toward a receiver while filtering a second portion of the electromagnetic radiation incident upon the grating and filter. | 11-13-2014 |
20150022893 | Diffraction Grating and Method for the Production Thereof - A diffraction grating includes a grating area having, in a direction running parallel to a substrate, a periodic arrangement of first areas with a first grating material and second areas with a second grating material. The first grating material and the second grating material are solid materials with different indices of refraction. A reflection-reducing or reflection-increasing layer system having at least two layers with different indices refraction. The reflection-reducing or reflection-increasing layer system is arranged on one side of the grating area facing away from the substrate, and an additional layer system having at least two layers with different indices of refraction is arranged between the substrate and the grating area. A method for producing the diffraction grating is also specified. | 01-22-2015 |
20150029588 | Control of Light Wavefronts - Techniques to control light wavefronts are described herein. A plurality of sub-wavelength grating (SWG) layers includes a SWG layer. The SWG layer is arranged to control a light wavefront. | 01-29-2015 |
20150029589 | OPTICAL REFLECTIVE DIFFRACTION DEVICE HAVING A HIGH RESISTANCE TO LASER FLUX - The present invention relates to an optical device for reflective diffraction with high diffraction efficiency and high laser flux resistance. The device includes a protective structure having at least one mixture layer produced by a uniform mixture of a first material and of a second material, where both of these are dielectric, and wherein said first material has an optical index lower than that of the said second material. | 01-29-2015 |
20150103405 | METHOD FOR THE PRODUCTION OF STRETCHABLE AND DEFORMABLE OPTICAL ELEMENTS, AND ELEMENTS THUS OBTAINED - It is described a method for the production of a fully or partially reflective stretchable and deformable optical element, comprising the implantation in at least one surface of an elastomeric support, by a technique of “Cluster Beam Implantation”, of neutral nanoclusters of a material selected among one or more metals, their alloys, their oxides or mixtures thereof, thus obtaining in said support a nanocomposite layer, possibly emerging at the surface of said element, and said implantation taking place by:
| 04-16-2015 |
20150109672 | Reflective Diffraction Grating and Method for the Production Thereof - A reflective diffraction grating includes a substrate and a reflection-enhancing interference layer system. The reflection-enhancing interference layer system has alternating low refractive index dielectric layers having a refractive index n1 and high refractive index dielectric layers having a refractive index n2>n1. The reflective diffraction grating also includes a grating containing a grating structure, which is formed in the topmost low refractive index layer on a side of the interference layer system facing away from the substrate, and a cover layer, which conformally covers the grating structure. The cover layer has a refractive index n3>n1. | 04-23-2015 |
20150124323 | DISPLAY AND LABELED ARTICLE - A higher forgery prevention effect is realized. A display includes a first interface section provided with a relief-type diffraction grating constituted by a plurality of grooves, and a second interface section provided with a plurality of recesses or projections arranged two-dimensionally at a center-to-center distance smaller than the minimum center-to-center distance of the plural grooves, and each having a forward tapered shape. | 05-07-2015 |
20150298482 | Multilayer Body and Method for Producing a Security Element - A multilayer body ( | 10-22-2015 |
20150369976 | Wideband Resonant Reflectors with Zero-Contrast Gratings - Disclosed is a new class of wideband reflectors that are relatively insensitive to deviations from the design parameters. The reflectors are materially sparse while providing high reflectance across wide spectral bands. In some embodiments, a device comprises a substrate and a grating layer disposed on the substrate, wherein the grating layer comprises a periodic grating structure and a sublayer beneath the grating structure and adjacent to the substrate, the grating layer and the sublayer having the same index of refraction. These compact, low-loss elements complement conventional thin-film reflectors while possessing properties not available in thin-film multilayer stacks. The reflectors are based on a fundamental resonance effect, the guided-mode resonance effect, that occurs in periodic structures. Disclosed herein are both one-dimensional and two-dimensional reflectors m zero-contrast embodiments. The disclosed reflectors can be used in various electromagnetic spectral regions for various useful applications. | 12-24-2015 |
20160001585 | DIFFRACTION GRATING RECORDING MEDIUM - It is an object of the invention to provide a diffraction grating recording medium that enhances the ability to prevent forgery and make security more reliable. | 01-07-2016 |
20160094016 | INCREASING THE SPATIAL AND SPECTRAL BRIGHTNESS OF LASER DIODE ARRAYS - Techniques for increasing the spatial and spectral brightness of laser arrays such as laser diode arrays are provided. Passive cavity designs are described that produce wavefront phase locking across the face of large arrays. These designs enable both spatial and spectral selectivity in order to coherently link the individual emitters that make up the diode array. Arrays of customized micro-optics correct aberrations of the individual apertures of the arrays while highly spectrally selective partial reflectors overcome the deleterious effects of inhomogeneities in local thermal environments of the individual emitters that are being phase locked together. Using these two technologies, along with intracavity diffractive beam coupling, solves two long standing problems that have prevented effective and robust phase locking of laser diode arrays. | 03-31-2016 |
20160161752 | DEVICE FOR WAVELENGTH COMBINING OF LASER BEAMS - A device for wavelength coupling of laser beams ( | 06-09-2016 |
20170235151 | Two-Dimensional Coherent Beam Combination Using Circular Or Spiral Diffraction Grating | 08-17-2017 |