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From grating

Subclass of:

359 - Optical: systems and elements

359558000 - DIFFRACTION

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
359569000 Including particular grating characteristic 200
359567000 For ornamental effect or display 25
359568000 For diffractive subtractive filtering 15
Entries
DocumentTitleDate
20120170121DIFFRACTION GRATING LENS AND IMAGING DEVICE IN WHICH THE SAME IS USED - A diffraction grating lens according to the present invention is a diffraction grating lens 07-05-2012
20130077170OPTICAL ELEMENT AND METHOD FOR MANUFACTURING THE SAME - A method for manufacturing an optical element includes the steps of: providing a first material including a precursor of a first energy curable resin which contains fine particles of a transparent conductive material on a transparent substrate, curing the first material by light irradiation, and performing a heat treatment on the cured first material. In the method described above, the cured first material processed by the heat treatment is again processed by light irradiation.03-28-2013
20090122407Structure and Manufacturing Method of the Same - The present invention may provide a structure capable of obtaining a higher difference in refractive indices between that of a transparent material and that of a cavity, than in the past, and a manufacturing method thereof, and the present invention provides a structure having a transparent material and an internal cavity which is formed by irradiating said transparent material with a pulse laser beam having a pulse width of 10×1005-14-2009
20090174944A Structural Body, a Method for Forming a Structural Body, an Apparatus for Forming a Structural Body, a Method for Reading a Structural Color and/or Diffraction Light, and a Truth/False Discriminating Method - Decoration of a material is enabled with a high degree of recycling properties while satisfying the requirements for putting a structural color into practical use on the industrial scale. Furthermore, whether an object is genuine or not can be verified easily, and reusing by peeling as in the case of a hologram seal is prevented.07-09-2009
20120206810RESIN COMPOSITION FOR COMPOSITE OPTICAL ELEMENT, COMPOSITE OPTICAL ELEMENT, AND IMAGING DEVICE AND OPTICAL RECORDING/REPRODUCING DEVICE EACH EQUIPPED WITH THE COMPOSITE OPTICAL ELEMENT - The present invention provides a resin composition for a composite optical element including: a first (meth)acrylate having a fluorene skeleton; and a second (meth)acrylate having a biphenyl ring but having no hydroxyl group. In the resin composition, the content of the first (meth)acrylate is 4 to 42 wt %.08-16-2012
20130088780Light-Guiding Structures - A method and an apparatus for providing a first light-guiding structure and a second light-guiding structure to receive an input optical beam and output an output optical beam to be viewed by a user. At least one of the first or the second light-guiding structure has a non-flat shape. The first and the second light-guiding structures are configured to produce virtual images at different viewing distances.04-11-2013
20130088781DIFFRACTION OPTICAL ELEMENT AND PRODUCTION METHOD THEREFOR - In a diffraction optical element having a structure in which a base and an optical adjustment layer adhere to each other, defects such as cracks and peeling occur in the optical adjustment layer, when the adhesive strength between the base and the optical adjustment layer is degraded. In a diffraction optical element 04-11-2013
20090303598Dynamic Optical Grating Device and Associated Method for Modulating Light - A dynamic optical grating device and associated method for modulating light is provided that is capable of controlling the spectral properties and propagation of light without moving mechanical components by the use of a dynamic electric and/or magnetic field. By changing the electric field and/or magnetic field, the index of refraction, the extinction coefficient, the transmittivity, and the reflectivity of the optical grating device may be controlled in order to control the spectral properties of the light reflected or transmitted by the device.12-10-2009
20090015923Multi-Spot Ophthalmic Laser Probe - A laser probe includes an emitting optical fiber, optics, and two or more receiving optical fibers. The emitting optical fiber emits a beam of laser light. The optics diffract the beam of light emitted by the emitting optical fiber. The receiving optical fibers each receive a beam of light diffracted by the optics.01-15-2009
20130163086SYSTEMS AND METHODS FOR IMPROVING THE PERFORMANCE OF A PHOTOREFRACTIVE DEVICE BY UTILIZING ELECTROLYTES - A photorefractive device (06-27-2013
20090237795Anti-Counterfeit Hologram - A microstructure area (09-24-2009
20090046367REFLECTIVE PLATE, DISPLAY HAVING THE SAME, AND METHOD OF CONTROLLING DISTRIBUTION OF REFLECTED LIGHT - Provided are a reflective plate and a display, and a method of controlling a distribution of reflected light. The reflective plate includes a plurality of diffracting grating cells including gratings reflecting incident light, wherein the gratings are arranged at predetermined intervals, and at least one of an arrangement period and an arrangement direction of each of the gratings of the plurality of diffracting grating cells is adjusted to limit a distribution of reflected light.02-19-2009
20120113517STRUCTURAL BODY, A METHOD FOR FORMING A STRUCTURAL BODY AND AN APPARATUS FOR FORMING A STRUCTURAL BODY - Decoration of a material is enabled with a high degree of recycling properties while satisfying the requirements for putting a structural color into practical use on the industrial scale. Furthermore, whether an object is genuine or not can be verified easily, and reusing by peeling as in the case of a hologram seal is prevented.05-10-2012
20090103181Processing Method and Processing Apparatus Using Interfered Laser Beams - Provided are a processing method and a processing apparatus which are capable of suppressing a disturbance attributable to a surface wave in a processing by interfered laser beams, in particular, a processing by the interfered laser beams of a pulsed laser having a pulse width of equal to or more than 1 fs and of equal to or less than 1 ps, in which the wavelength of a surface wave that propagates in a direction of the interference of the laser is made longer than a pitch of the interference of the laser on a surface of an object to be processed to process the object.04-23-2009
20100149641Compact Monolithic Dispersion Compensator - An optical signal control system is constructed from a portion of a material and allows for controlled amount of negative dispersion to be generated across a broadband input signal. The block may be made of a single portion of the material and have surfaces with reflective, transmissive, and/or diffractive optical characteristics. By adjusting the physical dimensions of the block substrate and the line pitch of a diffraction grating etched into a surface of the block, the magnitude of the dispersion can be varied. Laser systems that utilize the optical signal control system may have reduced size and weight as compared to existing compressors and be more robust against misalignment.06-17-2010
20090153967OPTICAL SECURITY DEVICE OFFERING 2D IMAGE - The present invention provides for a diffractive element comprising a diffractive optical microstructure consisting of a modulated structure of a diffractive type which upon illumination by diffused ambient light creates a two-dimensional image to be viewed by an observer upon tilting or rotating the device or by varying lighting direction, wherein the diffractive modulated structure of the device consists of various generally parameterised special optical elements with specifically prescribed groove shapes, wherein each groove shape, position, centre(s), and line thickness, are described by functions describing those dependencies which are variables of the positional coordinate of the optical element.06-18-2009
20100079865Near-to-eye scanning display with exit-pupil expansion - The specification and drawings present a new apparatus and method for near-to-eye (e.g., retinal) displaying with exit-pupil expansion using a scanning component (e.g., a scanning mirror) and an exit-pupil expander (e.g., diffractive exit-pupil expander) for providing a retinal scanning display with a large exit pupil.04-01-2010
20090147361MICROREPLICATED FILMS HAVING DIFFRACTIVE FEATURES ON MACRO-SCALE FEATURES - An optical film having a substrate and microreplicated features on a major surface of the substrate. The features include microreplicated macro-scale features and one or more microreplicated diffractive features on the macro-scale features. The films can be made from work pieces machined with tool tips having diffractive features. The tool tip forms both the macro-scale features and diffractive features while machining the work piece. A coating process can then be used to make the optical films from the machined work piece.06-11-2009
20090279172MICROELECTROMECHANICAL LAMELLAR GRATING - An optical instrument includes a grating. The grating includes a plurality of plates that form a single first plane. The instrument further includes a mirror surface positioned adjacent to the grating. The mirror surface is positioned in a second plane. In an embodiment, the mirror surface is made of a substrate, a silicon wafer positioned on the substrate, and a mirror etch pit surface on the silicon wafer.11-12-2009
20090180185Minute Structure and its Manufacturing Method - A manufacturing method of a minute structure having fine structures on opposing inner surfaces, includes the steps of forming a first pattern in a surface of a first layer, forming a sacrificial layer on the patterned surface of the first layer, forming a second pattern on a surface of the sacrificial layer, forming a second layer on the sacrificial layer and a portion of the surface of the first layer, and removing a member constituting the sacrificial layer. In the step of forming the first pattern on the first layer and the step of forming the second pattern on the sacrificial layer, the patterns are formed using the same alignment marks as references. This manufacturing method can realize highly accurate alignment even when plural lenses or DOEs are used.07-16-2009
20100277802MICROREPLICATED FILMS HAVING DIFFRACTIVE FEATURES ON MACRO-SCALE FEATURES - An optical film having a substrate and microreplicated features on a major surface of the substrate. The features include microreplicated macro-scale features and one or more microreplicated diffractive features on the macro-scale features. The films can be made from work pieces machined with tool tips having diffractive features. The tool tip forms both the macro-scale features and diffractive features while machining the work piece. A coating process can then be used to make the optical films from the machined work piece.11-04-2010
20080266663Optical pulse-width modifier structure - An optical pulse-width modifier structure includes a first diffraction grating and an optically unpowered reversing mirror. An optical path extends between the first diffraction grating and the optically unpowered reversing mirror. A second diffraction grating lies on the optical path between the first diffraction grating and the optically unpowered mirror. A set of optically powered mirrors lies on the optical path between the first diffraction grating and the second diffraction grating. The diffraction gratings and mirrors are positioned such that an input light beam is diffracted from the first diffraction grating, reflected from each of the set of optically powered mirrors, diffracted from the second diffraction grating, reflected from the optically unpowered reversing mirror back to the second diffraction grating, diffracted from the second diffraction grating, reflected from each of the set of optically powered mirrors, and diffracted from the first diffraction grating as an output light beam. The present approach produces a differential path length as a function of wavelength.10-30-2008
20090180184Stable dielectric gratings implemented by composition striations in paraelectric crystals - Methods for permanently introducing patterns in electro-optic crystals are provided, by forming patterned variations in the composition of the electro-optic crystals [07-16-2009
20090180186DIFFRACTIVE OPTICAL ELEMENT AND METHOD FOR MANUFACTURING SAME - A diffractive optical element that can maintain transparency and be molded easily, and a method for manufacturing the same are provided.07-16-2009
20090052039OPTICAL DEVICE - An optical device comprises a first optical system, a second optical system, a shading unit, and a diffraction grating. The first optical system transforms incident light to parallel light. The second optical system transforms incident light to parallel light. An optical axis of the second optical system is different from an optical axis of the first optical system. The shading unit has transmission areas having slit forms and shading areas having strip forms. The transmission areas and the shading areas are alternately arranged. The diffraction grating deflects the light transmitted by the transmission areas in a predetermined direction. Part of the incident light through the first optical system passes through the transmission areas, and the rest are shaded by the shading areas. Part of the incident light through the second optical system passes through the transmission areas, and the rest are shaded by the shading areas.02-26-2009
20110228395APPARATUS FOR ILLUMINATING A RETICLE - An apparatus for illuminating a marking, which is applied on a transparent reticle in the form of a diffraction structure, wherein illuminating beams are injected into the reticle via a side edge surface of the reticle such that they are emitted after diffraction at the marking perpendicular to the plane of the reticle, wherein a concavely curved mirror having two focal points is attached to the side edge surface such that a light source is arranged in the region of the first focal point and the marking is arranged in the region of the second focal point, wherein a second mirror having two focal points is attached such that a second light source with a second emission wavelength is arranged in the first focal point thereof and the marking is arranged in the region of the second focal point of the second mirror.09-22-2011
20100149640TUNABLE DIFFRACTION GRATING APPARATUS - Provided is a tunable diffraction grating apparatus including: a diffraction grating portion having a diffraction grating with an linearly variable grating interval, the diffraction grating being formed of an elastic member; a drive portion connected to the diffraction grating portion and applying a force to the diffraction grating portion to vary the grating interval; and a controller for controlling the drive portion to adjust the grating interval depending on a specific wavelength input from the exterior.06-17-2010
20100177387END REFLECTOR FOR A FLAT PANEL LENS - End reflectors, flat panel lens that may utilize the end reflector, and methods are provided. The end reflector for a flat panel lens may include a first grating having a first set of parallel planes. The first set of parallel planes may be of layers of alternating refractive indexes disposed at a first angle with a central plane of the flat panel lens. The end reflector may also include a second grating having a second set of parallel planes. The second set of parallel planes may be of layers of alternating refractive indexes of alternating refractive indexes disposed at a second angle with the central plane. The second angle may be equivalent to the first angle reflected about the central plane.07-15-2010
20120194911OPTICAL DEVICES BASED ON DIFFRACTION GRATINGS - Embodiments of the present invention relate to planar optical devices composed of one or more sub-wavelength diffraction grating layers. In one embodiment, an optical device includes a first substantially planar reflective structure (08-02-2012
20100254006Diffractive Optical Element and Method of Manufacturing the Same - A diffractive optical element (10-07-2010
20090040615SPECTRALLY ADJUSTABLE FILTER - Spectrally filtering at least one input beam includes: dispersing spectral components of at least one input beam at respective angles in a spectral plane; changing at least some of the angles of the propagation axes of the dispersed spectral components so that a plurality of the spectral components reflect from a single reflective surface; and tilting the reflective surface to select at least one and fewer than all of the received spectral components to be directed to an output spatial mode.02-12-2009
20090040614Dispersive Filter - A dispersive filter includes two dispersion systems with an intermediate slit between them. The two dispersion systems have similar but mirror image dispersion characteristics at the plane of the intermediate slit and are configured so that the entrance port of the dispersive filter is polychromatically imaged on the exit port. The intermediate slit passes blocks selected wavelengths and transmits the remaining dispersed wavelengths from the first dispersion system to the second dispersion system. The second dispersion system combines the dispersed beam that passes through the intermediate slit to form an output beam, which is focused on the exit port. In this manner, the radiance of the input radiation is preserved ignoring losses caused by the optical elements and the blocked wavelengths.02-12-2009
20100296162Membrane grating for beam steering device and method of fabricating same - A method of fabricating a membrane structure for a diffractive phased array assembly is provided. The method includes the steps of providing a wafer having a body and at least a membrane layer and a backside layer disposed on opposite faces of the body, forming a grating pattern on a surface of the membrane layer, and forming a window through the wafer to expose a back surface of the membrane, thereby allowing light to pass through the membrane.11-25-2010
20110122496Substrate Used in a Method and Apparatus for Angular-Resolved Spectroscopic Lithography Characterization - A substrate includes an overlay target. The overlay target can include two superposed layers. Each of the two superposed layers includes two gratings with a different pitch from each other.05-26-2011
20110026119METHOD FOR PRODUCING DIFFRACTIVE OPTICAL ELEMENT, AND DIFFRACTIVE OPTICAL ELEMENT - According to a method for producing a diffraction optical element of the present invention, the center of a molding face 02-03-2011
20090034078OPTICAL IDENTIFICATION ELEMENT HAVING A NON-WAVEGUIDE SUBSTRATE - An optical identification element including a non-waveguide optical substrate. The optical substrate has a volume and includes an inner region surrounded by an outer region. The inner region has an index of refraction that prevents the optical substrate from forming an optical waveguide. The optical substrate includes a diffraction grating within the volume, and the grating provides an output signal indicative of a code when illuminated by an incident light.02-05-2009
20100177388DIFFRACTIVE OPTICAL RELAY DEVICE WITH IMPROVED COLOR UNIFORMITY - An optical relay comprises a light-transmissive substrate having a plurality of diffractive optical elements, where at least one diffractive optical element is characterized by nonuniform diffraction efficiency. The substrate and diffractive optical elements are designed and constructed to relay at least a portion of a light beam emanating from an object to at least one predetermined eye-box in a manner such that for each point of the object, there is a set of parallel outgoing light rays originating from the point and arriving to the eye-box. The color difference between any two parallel light rays of the set is less than 50 ΔE* units.07-15-2010
20110235178DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL DEVICE - A diffractive optical element includes first and second optical members which are stacked. A diffraction grating is formed at an interface between the first and second optical members. A plurality of pores are formed in the second optical member.09-29-2011
20120120493OPTICAL WAVEGUIDES - The invention relates to a display device for displaying an image over a field of view. The device comprises: an optical arrangement for directing image bearing light from an image source so that the light has rays at a range of angles relative to an injection axis; and an optical waveguide having an input grating for diffracting into the waveguide said light over said range of angles such that all of the diffracted light is totally internally reflected within the waveguide and so that image bearing light output from the waveguide has a field of view corresponding to said range of angles, wherein the input grating is a surface relief grating having a profiled reflective surface and at least one layer of dielectric material conforming to the surface for diffracting light over said range of angles into the waveguide.05-17-2012
20110075259OPTICAL DESIGNS FOR ZERO ORDER REDUCTION - Apparatus for projecting a pattern includes a first diffractive optical element (DOE) configured to diffract an input beam so as to generate a first diffraction pattern on a first region of a surface, the first diffraction pattern including a zero order beam. A second DOE is configured to diffract the zero order beam so as to generate a second diffraction pattern on a second region of the surface such that the first and the second regions together at least partially cover the surface.03-31-2011
20110069389OPTICAL DESIGNS FOR ZERO ORDER REDUCTION - Apparatus for projecting a pattern includes a first diffractive optical element (DOE) configured to diffract an input beam so as to generate a first diffraction pattern on a first region of a surface, the first diffraction pattern including a zero order beam. A second DOE is configured to diffract the zero order beam so as to generate a second diffraction pattern on a second region of the surface such that the first and the second regions together at least partially cover the surface.03-24-2011
20100097704Line narrowing module - An apparatus is disclosed which may comprise a grating receiving light, a first prism moveable to coarsely select an angle of incidence of the light on the grating, and a second prism moveable to finely select an angle of incidence of the light on the grating. In one application, the apparatus may be used as a line narrowing module for a laser light source.04-22-2010
20090021832Wideband Diffraction Limited Optical Receiver - Systems and methods are provided for providing wideband diffraction limited performance in an optical receiver. A first lens is constructed from a first material and has a first surface and a second surface. A second lens is constructed from a second material and having a first surface and a second surface. The second lens is positioned such that a first surface of the second lens faces a second surface of the first lens across a gap of air. A diffraction grating is applied to one of the first and second surfaces of the first and second lenses.01-22-2009
20080204879Miniature Lamellar Grating Interferometer Based on Silicon Technology - A lamellar grating interferometer is described, in which the light beams are collimated and focused onto the grating by means of mirror 08-28-2008
20100284083OPTICAL PIPE INTENDED FOR PRODUCING AN ELECTRONIC DISPLAY ARRANGEMENT - A light pipe for transmitting light signals from one of its ends, referred to as its inlet surface (11-11-2010
20100214659DIFFRACTIVE BEAM EXPANDER AND A VIRTUAL DISPLAY BASED ON A DIFFRACTIVE BEAM EXPANDER - A diffractive beam expander (08-26-2010
20120026587APPARATUS FOR CHANGING DIFFRACTION GRATINGS - An apparatus usable with a laser resonator has a generally stationary base, a positioning slide carried on the guide and shiftable thereon in an adjustment direction, and two (or more) holders carried on the slide and each having a platform adapted to secure a respective diffraction grating. Each of the platforms can be shifted on the respective holder with at least two degrees of freedom relative to the slide. The positioning slide can also be shifted relative to the base for moving each of the gratings into a working positionmak02-02-2012
20120127577PLANAR OPTICAL SYSTEM FOR WIDE FIELD-OF-VIEW POLYCHROMATIC IMAGING - A planar optical system for wide field-of-view polychromatic imaging includes a planar waveguide including two plane parallel faces, an entry coupler including a first diffraction grating, and an exit coupler including a second diffraction grating. The diffraction gratings are low line density diffraction gratings that have a pitch greater than the wavelength of use such that the grating is adapted to couple an entry beam having a mean angle of incidence i05-24-2012
20120162770ISOTROPIC OPTICAL FILTER AND METHOD OF MANUFACTURING THEREOF - The present invention discloses an isotropic optical filter comprising high-index refraction material positioned between low-index-refraction matter. At least some of the high-index refraction material has a grated structure and lateral and vertical dimensions with respect to the low-index-refraction matter such that the high-index refraction material is operative to act as a leaky waveguide for light incident on the ZOF. The grated structure comprises at least two different grating patterns. Each of the at least two grating patterns constitutes a subpixel. A plurality of subpixels is operative to diffract incident light to at least two zero-order wavelength spectra respective of the at least two grating patterns such to exhibit an isotropic colour effect with respect to the rotational orientation of the isotropic optical filter. The plurality of subpixels constitute an isotropic pixel06-28-2012
20120170122Objective Lens Element - An objective lens element which has excellent compatibility with optical discs having different base material thicknesses is provided. An objective lens element 07-05-2012
20120212820OPTICAL DIFFRACTION GRATINGS AND METHODS FOR MANUFACTURING SAME - Described herein are diffraction gratings and methods for the manufacture thereof. One method comprises applying a force to a substrate to strain the substrate, disposing a thin film on at least a portion of the substrate, and reducing the force applied to the substrate, thereby causing the thin film to buckle.08-23-2012
20090034077Grating with angled output prism face for providing wavelength-dependent group delay - A method and apparatus for dispersion compensation which provides a specified, well-controlled, wavelength-dependent optical path length in a laser or other optical system. A reflection grism-like device with an angled output interface is designed to simultaneously provide negative GVD and negative TOD, and therefore can be used to compensate for material dispersion. These gratings are very efficient due to their near-Littrow configuration and can be used over a broad spectral range, which is particularly useful in ultra-short-pulse applications.02-05-2009
20120268819SECURITY DEVICE AND METHOD OF MANUFACTURING THE SAME - A security device includes at least two lenticular devices, each lenticular device having an array of elongate lenticular focusing elements located above respective sets of image strips, wherein the elongate directions in which the lenticular focussing elements of the two lenticular devices extend are different.10-25-2012
20130170041DIFFRACTIVE OPTICAL ELEMENT AND METHOD FOR PRODUCING DIFFRACTIVE OPTICAL ELEMENT - A diffractive optical element disclosed in the present application includes a body 07-04-2013
20080198466Method and apparatus for controlling multiple beam spacing - An anamorphic optical element and an adjustment mechanism for selectively rotating the optical element either around an axis substantially in a vertical direction, an axis substantially in an optical axis direction, an axis substantially in a plane formed by the vertical direction and the optical axis direction, or combination of axes thereof is used to vary a vertical separation between two or more spots.08-21-2008
20130208358Method Of Forming An Optical Device By Laser Scanning - A method of forming an optical device in a body (08-15-2013

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