Class / Patent application number | Description | Number of patent applications / Date published |
359571000 | Echelette or blazed grating | 45 |
20080204880 | Diffractive Optical Structure with a Liquid Interface - An optical system comprising a diffraction element ( | 08-28-2008 |
20080225393 | Light outcoupling structure for a lighting device - A diffractive light outcoupling unit for forming a part of a directive light outcoupling system of a lighting device including a plurality of diffractive outcoupling units. The diffractive light outcoupling units each include a carrier element for accommodating a diffractive surface relief pattern, and a diffractive surface relief pattern including a plurality of consecutive diffractive surface relief forms defined on a surface area of the carrier element arranged to couple light incident on the diffractive surface relief pattern outside the carrier element via interaction involving at least two surface relief forms of the plurality of surface relief forms of the diffractive surface relief pattern so as to enhance the directivity of the coupled light. A diffractive light outcoupling system includes a plurality of diffractive light outcoupling units. A lightguide includes the outcoupling system. | 09-18-2008 |
20080259456 | Security Document - Described is a security document with a transparent security element ( | 10-23-2008 |
20090027776 | METHOD FOR COATING AN OPTICAL COMPONENT FOR A LASER ARRANGEMENT AND RELATED OPTICAL COMPONENT - A method for coating an optical component comprises providing the optical component. The optical component has a surface formed with parallel, periodically structured surface sections each having a first flank and a second flank. The first flank and the second flank of each surface section are furthermore inclined with respect to one another, and the first flank is formed such that it is smaller than the second flank. The method furthermore comprises at least partly applying a coating to at least the first flank of each surface section. The surface coating has a metal layer and a dielectric multilayer and the metal layer is applied before the dielectric multilayer. The second flank is not coated or is coated with a layer thickness that is formed such that it is smaller than a layer thickness of the surface coating of the first flank. | 01-29-2009 |
20090067052 | Optical apparatus - An optical apparatus ( | 03-12-2009 |
20090141354 | DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL SYSTEM INCLUDING THE SAME - A diffractive optical element includes at least one element portion including a base, a diffraction grating, a substrate, and an intermediate layer. The base and the diffraction grating are disposed above the substrate through the intermediate layer, and are formed of a same material. An extinction coefficient for the d-line of the material of the diffraction grating and an extinction coefficient for the d-line of a material of the intermediate layer are properly set to satisfied conditional expressions. | 06-04-2009 |
20090153968 | SPECTRAL BEAM COMBINATION USING BROAD BANDWIDTH LASERS - The present invention provides systems and methods for spectral beam combination by applying a spatial chirp to each of a plurality of input beamlets using a respective plurality of dispersive elements and combining the spatially-chirped beamlets into a single collimated output beam using a dispersive element configured to remove the spatial chirp. In an embodiment, each dispersive element is a grating combined with a lens that is confocal to the grating and also confocal to a Fourier plane upon which a transverse distribution of beam spectral components is produced. A final lens-grating pair includes a lens and a grating, where the lens is confocal to the grating and also confocal to the Fourier plane. | 06-18-2009 |
20100002302 | METHOD AND APPARATUS FOR CHIEF RAY ANGLE CORRECTION USING A DIFFRACTIVE LENS - Methods and apparatus reduce the chief ray angle incident on a pixel array of an imaging device by the use of a diffractive lens. | 01-07-2010 |
20100027122 | Metal Mold, Optical Device, Metal Mold for Forming Optical Device, and Process for Manufacturing the Same - A mold for forming an optical element includes: a surface including a plurality of grooves arranged concentrically. Each of the grooves includes a bottom surface with a predetermined width, a side surface, and a curved surface with a predetermined curvature radius. The bottom surface extends in a radius direction of the grooves. The curved surface connects the bottom surface and the side surface. | 02-04-2010 |
20100110548 | DIFFRACTIVE OPTICAL ELEMENT AND METHOD OF MAKING THE SAME - A diffractive optical element according to the present invention includes: a lens body | 05-06-2010 |
20100177389 | METHOD OF ADJUSTING THE COMPENSATION FOR PUPIL DELAY IN A CONVERGENT OR DIVERGENT BEAM - A method of adjusting the pupil delay compensation of a convergent or divergent beam that includes placing a device composed of an afocal system comprising one or more passive optical components disposed on the propagation axis of the beam, at least one of the components being a focusing diffractive component, and moving the device along the propagation axis of the beam until the required pupil delay compensation is obtained, where the compensation is the algebraic sum of pupil delays of each passive optical component of the afocal system and lying in a range of values the limits of which are functions of the particular combination of the optical components chosen to form the afocal system of the compensation device. | 07-15-2010 |
20100214660 | BEAM SHAPING DEVICE - A multi-wavelength beam shaping device is made of a plurality of first micro-steps responsive to light beams of a first specific light wavelength to effect wave diffraction, and a plurality of second micro-steps responsive to light beams of a second light wavelength to effect wave diffraction. Multi-wavelength original light beams can be shaped into a specific lighting pattern to project. | 08-26-2010 |
20100220395 | FABRICATION PROCESS OF A MICROFABRICATED BLAZED GRATING - A blazed grating is disclosed as well as mode hop-free tunable lasers and a process for fabricating gratings of this type. The grating lies in a general plane and includes a plurality of elongate beams carrying mutually parallel respective reflection surfaces spaced apart from one another with a predefined pitch, each of these reflection surfaces having a normal direction inclined at a grating angle α to the normal direction of the general plane. The grating includes a plurality of resilient suspension arms connected to the beams and intended to be fastened to a grating support. A first pair of comb electrodes is provided for applying a mechanical force to this assembly, being placed on a first side of the grating, along an axis transverse to the beams, and designed so as to allow the pitch of the grating to be modified in response to the application of the mechanical force. | 09-02-2010 |
20100226014 | 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 grating members having a cross-sectional shape respectively surrounded by two straight lines such as a triangular shape, and metal members as light-shielding members each being formed on corresponding one of the diffraction grating members at one side of the diffraction grating member along any of the straight line and the curved line of the cross-sectional shape of the diffraction grating member formed by the resin member. The metal members are configured to reduce zero-order transmitted light with respect to incident light, and to enhance diffraction efficiency of first-order transmitted light. | 09-09-2010 |
20100226015 | 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 grating members having a cross-sectional shape respectively surrounded by two straight lines such as a triangular shape, and metal members as light-shielding members each being formed on corresponding one of the diffraction grating members at one side of the diffraction grating member along any of the straight line and the curved line of the cross-sectional shape of the diffraction grating member formed by the resin member. The metal members are configured to reduce zero-order transmitted light with respect to incident light, and to enhance diffraction efficiency of first-order transmitted light. | 09-09-2010 |
20100284084 | DIFFRACTION ELEMENT, MANUFACTURING METHOD FOR DIFFRACTION ELEMENT, AND SPECTROMETER USING THE SAME - Objects are to obtain a highly accurate diffraction element that may prevent an intensity decrease of a light beam entering a light receiving unit without a decrease in diffraction efficiency and without a problem of flare or the like, a manufacturing method for the diffraction element, and a spectrometer using the same. A diffraction element ( | 11-11-2010 |
20100315714 | Film Element - The invention concerns a film element having a replication layer ( | 12-16-2010 |
20100328775 | OPTICAL ARRANGEMENT, METHOD OF USE, AND METHOD FOR DETERMINING A DIFFRACTION GRATING - An optical arrangement includes a light source which emits coherent light of a wavelength λ, and a diffraction grating which has a multiplicity of diffraction structures which follow one another periodically at the spacing of a grating period d and are arranged along a base surface, the individual diffraction structures respectively having a blaze flank and an antiblaze flank, the blaze flanks being arranged at an angle β and the antiblaze flanks being arranged at an angle α to the base surface, and respectively neighbouring blaze and antiblaze flanks enclosing an apex angle γ, and an incident light beam being arranged at a Littrow angle θ | 12-30-2010 |
20110157701 | DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL DEVICE - In a diffractive optical element, a first optical member and a second optical member are stacked, and a diffraction grating is formed at an interface between the first and second optical members. The diffractive optical element is configured so that the followings fall within a predetermined range: an inter-material gradient which is a ratio of an amount of change in reference refractive indexes between the first optical member and the second optical member, to an amount of change in principal dispersions between the first optical member and the second optical member; and a blaze wavelength of the diffraction grating. | 06-30-2011 |
20110235180 | DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL DEVICE - A diffractive optical element includes a first optical member having a first diffraction grating with a sawtooth cross section; and a second optical member which has a second diffraction grating having a sawtooth cross section and which has a refractive index different from that of the first optical member. In the diffractive optical element, the first and second optical members are stacked so that the first and second diffraction gratings closely contact each other. Arithmetical mean roughness of a diffraction surface of the first diffraction grating is set so as to fall within a predetermined range. | 09-29-2011 |
20120113518 | DIFFRACTION GRATING LENS AND IMAGE CAPTURE APPARATUS USING THE SAME - A diffraction grating lens of the present invention includes a lens base | 05-10-2012 |
20120229904 | MANUFACTURING METHOD OF DIFFRACTION GRATING - A method for manufacturing a diffraction grating having a plurality of grating grooves that extends in parallel in a direction includes a first cutting processing step of moving, in the direction, a work and a cutting tool having a first blade and a second blade relatively to each other, and of forming a first surface of the grating groove in the work through cutting processing using the first blade of the cutting tool, and a second cutting step of moving, in the direction, the work and the cutting tool relatively to each other after the first cutting processing step, so that the first blade does not contact the first surface formed by the first cutting processing step, and of forming a second surface of the grating groove in the work through cutting processing using the second blade of the cutting tool. | 09-13-2012 |
20120250157 | ON-CHIP DIFFRACTION GRATING PREPARED BY CRYSTALLOGRAPHIC WET-ETCH - Methods of forming microelectronic structures are described. Embodiments of those methods may include forming a photomask on a (110) silicon wafer substrate, wherein the photomask comprises a periodic array of parallelogram openings, and then performing a timed wet etch on the (110) silicon wafer substrate to form a diffraction grating structure that is etched into the (110) silicon wafer substrate. | 10-04-2012 |
20130155514 | DIFFRACTIVE OPTICAL ELEMENT, OPTICAL SYSTEM, AND OPTICAL APPARATUS - A diffractive optical element made by adhering a first diffractive grating and a second diffractive grating to each other, each of which has a blazed structure. At least one of the first and second diffractive gratings is made of a material having a refractive index distribution in a plane normal direction, and the predetermined expressions are satisfied for a wavelength λ in a visible wavelength range. | 06-20-2013 |
20130170043 | Hybrid Diffraction Grating, Mold Insert And Manufacturing Methods Thereof - A hybrid diffraction grating, a mold used to produce the hybrid diffraction grating, and their manufacturing methods are described. In one aspect, a hybrid diffraction grating comprises a grating main body and a reflective layer. The grating main body comprises numerous diffraction structures. When viewed along a top-view direction, the numerous diffraction structures are arranged in a pattern defined by a profile. The profile determines various blaze angles of the numerous diffraction structures. The reflective layer, disposed on the diffraction structures, exhibits characteristics of the numerous diffraction structures. | 07-04-2013 |
20130176621 | DIFFRACTIVE MEMS DEVICE - A diffractive MEMS device has an in-plane binary reflective diffraction pattern formed in an outer surface of a tiltable platform. The binary reflective diffraction pattern includes rectangular or trapezoidal ridges and valleys, or grooves, of a same depth. The binary reflective diffractive pattern has a high diffraction efficiency even though the surfaces of the “grooves” or “ridges” are not perpendicular to the incoming optical beam. The diffractive pattern is supported by a pair of torsional hinges and is tiltable by an electrostatic actuator. The electrostatic actuator can include at least one side electrode for linearization of dependence of tilt angle on the voltage applied to the actuator. | 07-11-2013 |
20130176622 | Multi-Dimensional Imaging Using Multi-Focus Microscopy - An optical imaging system includes a first diffractive optical element that receives a multi-wavelength beam of light and separates the received beam of light into diffractive orders. The optical imaging system also includes a second diffractive optical element that includes panels displaced along the second diffractive element in at least one direction, where each panel is positioned to receive and pass the multi-wavelength beam of one of the diffractive orders. A refractive optical element is positioned to receive multi-wavelength beams of the diffractive orders that pass through the second diffractive element, and an optical lens that receives the multi-wavelength beams of the diffractive orders that pass through the refractive element and focuses each of the multi-wavelength beams of the diffractive orders to a different location on an image plane at the same time. | 07-11-2013 |
20130342908 | METHOD OF MANUFACTURING A DIFFRACTION GRATING - A method for manufacturing a blazed diffraction grating made of a crystalline material comprising gallium phosphide (GaP) or gallium arsenide (GaAs) includes forming the blazed diffraction grating by forming a plurality of grating grooves on a machined surface of a workpiece by machining, wherein the grating grooves are formed so that a surface comprising a (110) plane is arranged to receive the most incident light among the surfaces that constitute each grating, where (110) describes a crystal orientation of the crystalline material. | 12-26-2013 |
20130342909 | METHOD OF MANUFACTURING A DIFFRACTION GRATING - A method for manufacturing a blazed diffraction grating made of a crystalline material comprising zinc selenide (ZnSe) or zinc sulfide (ZnS) includes forming the blazed diffraction grating by forming a plurality of grating grooves on a machined surface of a workpiece by machining, wherein the grating grooves are formed so that a surface comprising a (110) plane is arranged to receive the most incident light among the surfaces that constitute each grating, where (110) describes a crystal orientation of the crystalline material. | 12-26-2013 |
20140009833 | Lens with an Out-Coupling Element - A lens including: a central refracting portion and a peripheral portion configured to support the lens in a lens mount wherein the peripheral portion has a surface including at least one out-coupling element configured to couple light out of the lens. | 01-09-2014 |
20140043686 | DIFFRACTION ELEMENT AND METHOD OF MANUFACTURING DIFFRACTION ELEMENT - Provided is an immersion diffraction element that prevents decrease of diffraction efficiency thereof so as to satisfy optical performance. A reflection type diffraction element is made of a material transmitting a light, beam having a predetermined wavelength. An echelle diffraction grating covered with a reflecting film that prevents transmission of the light beam is formed on one surface of the material. A diffraction grating is formed off in a repeated manner, a blazed surface facing incident light and a non-blazed surface connecting the blazed surface to a neighboring blazed surface. An angle formed between the blazed surface and the non-blazed surface is an acute angle. A defect generated at a grating vertex of the blazed surface fails in a shadow of the neighboring blazed surface so as to prevent the incident light from becoming scattered light due to the defect portion. | 02-13-2014 |
20140043687 | DIFFRACTION OPTICAL ELEMENT - A diffractive optical element includes: a body being composed of a first optical material and having a diffraction grating on the surface thereof; and an optical adjustment layer being composed of a second optical material and provided on the body so as to cover the diffraction grating. An envelope passing through the edge of the diffraction grating presents a curved surface, and the optical adjustment layer has a uniform thickness along the normal direction from the envelope. | 02-13-2014 |
20140085726 | REFRACTIVE-DIFFRACTIVE SWITCHABLE OPTICAL ELEMENT - A lens in accordance with the present invention includes an switchable cell consisting of optical substrate with diffraction surface, elastic film in contact with the diffraction surface of the substrate, optical fluid that fills the space between the film and diffraction surface and the mean to transfer the optical fluid in and out of the space between the film and diffraction surface. The refractive index of the optical fluid matches the refractive index of the optical substrate. The switchable cell changes focus positions between refractive focus in relaxed state when the pressure at both sides of the film is the same and diffraction focus when the optical fluid is transported from the space between the film and optical substrate for the film to largely conform to the diffraction surface shape of the optical substrate. | 03-27-2014 |
20140160567 | DIFFRACTIVE OPTICAL ELEMENT AND MANUFACTURING METHOD FOR THE SAME - An Al film is formed so that film forming particles are incident at normal incidence to grating wall surfaces of a diffraction grating having multiple grating portions and are incident at oblique incidence to optical effective surfaces. After that, oxidation treatment is performed from a direction to be incident at normal incidence to the optical effective surface so that the Al layer on the optical effective surface is changed to Al | 06-12-2014 |
20140247493 | OBJECTIVE LENS ELEMENT - An objective lens element which has excellent compatibility with optical discs having different base material thicknesses is provided. An objective lens element | 09-04-2014 |
20140285891 | METHOD FOR PRODUCING A REFRACTIVE OR DIFFRACTIVE OPTICAL DEVICE - A method producing a refractive or diffractive optical device, including: production, in a first layer, of at least one inclined general profile approximated by a staircase profile including plural stairsteps; production of the profile including: forming buffer patterns on the first layer and at least one sequence including: forming masking patterns, so each masking pattern includes at least one edge situated above a buffer pattern and covers at least one area of the first layer not masked by the buffer patterns, the forming the masking patterns also defining, for the first layer, plural free areas not masked by the masking patterns or by the buffer patterns; etching the free areas to form trenches in the first layer. The production of the profile also includes: removing the masking patterns, removing the buffer patterns revealing walls previously covered by the buffer patterns, and then an isotropic etching to remove the walls. | 09-25-2014 |
20140293425 | Compensation Of Optical Aberrations Caused By Non-Planar Windows - The specification and drawings present a new apparatus and a new apparatus for compensation of the optical aberrations caused by a non-planar window (or windows in general, for example windows having a curved surface) using a diffractive (optical) element such as a diffractive foil in electronic/camera devices such as electronic devices with displays. According to an embodiment, an optical window of an electronic device/camera may have at least a non-planar front surface which causes an aberration of an input image. This aberration can be corrected to be below predefined one or more parameters (such as a circle with a predefined maximum radius and/or a directional shift by a predefined maximum value) using a diffractive element/foil located on/near a back surface of the optical window or between the back surface of the optical window and a sensor/camera image plane where the input image is focused on. | 10-02-2014 |
20140307321 | Security Document - Described is a security document with a transparent security element ( | 10-16-2014 |
20140313584 | DIFFRACTIVE OPTICAL ELEMENT AND IMAGING DEVICE AND ILLUMINATING DEVICE USING SAME - To provide a highly workable diffractive optical element which realizes a high refractive index and a low wavelength dispersiveness well balanced with each other and which exhibits high heat resistance and high endurance against temperature changes, a diffractive optical element includes a base member including a diffraction grating formed on a surface thereof and a protective film provided on the surface of the base member where the diffraction grating is formed, wherein the base member is composed of a silsesquioxane resin material or a dendrimer material which has a first refractive index and a first Abbe number and wherein the protective film is composed of a silicone resin material which has a second refractive index smaller than the first refractive index and a second Abbe number smaller than the first Abbe number. | 10-23-2014 |
20150349479 | DIFFRACTION GRATING FOR LASER PULSE COMPRESSION AND LASER DEVICE - A pulse compressor for compressing a laser pulse in a laser device using a chirped pulse amplification method includes two identically shaped diffraction gratings arranged parallel to each other with their respective grating surfaces facing each other and a total reflection mirror for receiving a laser pulse through the diffraction grating and returning it back to the same gratings. Each diffraction grating is a reflective blazed diffraction grating having grooves with a sawtooth-shaped section covered with a reflective Au coating on their surface, with the blaze angle determined so that, at the wavelength of the laser pulse to be used, the incident angle of a laser pulse entering the pulse compressor and first order diffracted light form a relationship of mirror reflection with the groove slope and so that a predetermined level of diffraction efficiency is obtained. Since the laser pulse impinges on the grating at substantially right angles to the groove slope, a high level of damage threshold is obtained and a high-power laser pulse can be generated. | 12-03-2015 |
20150355394 | DIFFRACTION GRATINGS AND THE MANUFACTURE THEREOF - A diffraction grating | 12-10-2015 |
20150362643 | DIFFRACTIVE LENS AND OPTICAL DEVICE USING THE SAME - An object of the present application is to thin a thick lens used in an automobile headlamp optical system and a projector lighting optical system while maintaining the optical properties of the lens. A diffractive lens includes, on at least one surface, an optical surface with a plurality of areas defined by a plurality of steps. A blaze wavelength of the diffractive lens is within a wavelength spectral range of a light source used. An optical path difference between adjacent areas at the blaze wavelength is larger than a coherence length of the light source. The diffractive lens substantially acts as a Fresnel lens at a wavelength other than the blaze wavelength. | 12-17-2015 |
20160161646 | Film Element - The invention concerns a film element having a replication layer ( | 06-09-2016 |
20160202399 | Electroactive Lens With Multiple Depth Diffractive Structures | 07-14-2016 |
20170235153 | WIDE SPECTRAL BAND SUBWAVELENGTH DIFFRACTIVE COMPONENT | 08-17-2017 |