Entries |
Document | Title | Date |
20080198467 | Standard Component For Length Measurement, Method For Producing The Same, and Electron Beam Metrology System Using The Same - A standard component for length measurement includes a first diffraction grating and a second diffraction grating. Each of components of the second diffraction grating is disposed between components of the first diffraction grating. | 08-21-2008 |
20080291541 | LIGHT REDIRECTING SOLAR CONTROL FILM - A light redirecting solar control film includes a multilayer film that transmits visible light and reflects infrared light, and a light redirecting layer adjacent to the multilayer film forming a light redirecting solar control film. The light redirecting layer includes a major surface forming a plurality of prism structures. | 11-27-2008 |
20080297902 | COMPACT INFRARED SPECTROMETER, AND METHODS AND SYSTEMS FOR MANUFACTURE AND ASSEMBLY OF COMPONENTS USED IN SAME - A compact spectrometer operable in a wavelength range of 4.5 or more microns includes an entrance slit, a collimating mirror, a grating, a focusing mirror and a first focal plane. At least some radiation passing through the slit follows an optical path in which at least some radiation passing through the slit is reflected by the collimating mirror onto the grating, which in turn reflects at least some radiation onto the focusing mirror, which in turn reflects and focuses at least some radiation at a first focal plane and onto the two-dimensional array of detectors. Each column in the two-dimensional array of detectors corresponds to a wavelength in the 4.5 or more micron range, the two-dimensional array includes a plurality of columns that collectively correspond to wavelengths spanning the 4.5 or more micron range, and each adjacent pair of columns in the two-dimensional array of detectors corresponds to two wavelengths that differ by an equal amount. The entrance slit, the collimating mirror, the grating, the focusing mirror and the first focal plane are positioned within a volume that is equal or less than 192 cubic inches in size. | 12-04-2008 |
20090009868 | DIFFRACTION GRATING RECORDING MEDIUM - A diffraction grating recording medium including a waveguide layer and a grating structure layer is provided. The waveguide layer has a reflective surface and a light incident surface, in which a thickness of the waveguide layer is between 100 nanometers and 2 micrometers, and the reflective surface reflects a light that enters the waveguide layer from the light incident layer. The grating structure layer is disposed on the light incident surface of the waveguide layer, in which the grating structure layer has a plurality of diffractive elements, and the arranging period of the diffractive elements is between 50 nanometers and 900 nanometers. | 01-08-2009 |
20090009869 | Reduced loss high efficiency diffractive and associated methods - A sub-wavelength anti-reflective diffractive structure is incorporated with a base diffractive structure having a small period to form a high efficiency diffractive structure. In the high efficiency diffractive structure, the anti-reflective structure and/or the base diffractive structure are altered from their ideal solo structure to provide both the desired performance and minimize reflections. | 01-08-2009 |
20090080075 | OPTICAL FILTER WITH MOTH-EYE GRATING STRUCTURE - An optical element includes a transparent substrate, a filter film, and an moth-eye grating structure. The filter film and the moth-eye grating structure are formed on two facing away surfaces of the transparent substrate. The moth-eye grating structure is configured for promoting anti-reflection properties to the moth-eye grating structure. | 03-26-2009 |
20090097121 | Diffractive Optical Element and Optical Head - A diffractive optical element whose two diffraction gratings diffract three different wavelength light beams is provided. The diffractive optical element includes a first diffraction grating and a second diffraction grating that is located opposite the first one, and is configured in such a way that, among three different wavelength incident light beams, the diffraction efficiency in one light beam diffracted on the first diffraction grating is a predetermined value or less, and the diffraction efficiencies in the other two different incident light beams diffracted on the second diffraction grating are predetermined values or less. This arrangement can achieve a diffractive optical element capable of diffracting the three different wavelength light beams in a simple configuration. | 04-16-2009 |
20090103182 | DIFFRACTIVE OPTICAL ELEMENT AND BIDIRECTIONAL OPTICAL COMMUNICATION MODULE USING THE SAME - A diffractive optical element has a diffraction grating which multiplexes light beams of different wavelengths, and the diffraction grating has a binary structure in which the diffraction surface top part and the diffraction surface bottom part repeat a concave and convex shape through a rising surface part along an optical axis direction P. The diffraction surface top part and the diffraction surface bottom part are inclined to the rising surface part. By this diffractive optical element, the diffraction angle of the light beam is maintained, and the diffraction efficiency of the light beam can be improved. By using this diffractive optical element in an optical communication module, while the separation angle of the light beam of the different wavelength is maintained, the signal receiving performance is increased. | 04-23-2009 |
20090116110 | DIFFRACTION GRATING STRUCTURE AND METHOD FOR MANUFACTURING SAME - A diffraction grating structure comprises a substrate having a first surface and a second surface opposite to the first surface. A first grating is defined on the first surface and a second grating is defined on the second surface. The first grating includes a plurality of first grooves and has a first grating period. The second grating includes a plurality of second grooves and has a second grating period. The first groove and the second groove are formed by a fast tool servo system. | 05-07-2009 |
20090135487 | DIFFRACTION GRATING DEVICE AND OPTICAL APPARATUS - A diffraction grating device for splitting or coupling light beams permits the divergence of the light beams to be minimized easily. A first light beam is incident on a diffraction grating from the side thereof facing the inside of the device, and a second light beam is incident on the diffraction grating from the side thereof facing air. The diffraction grating transmits the first light beam by diffraction of the minus first order so that it travels in the reverse direction along the optical path of the second light beam before incidence, and transmits the second light beam by diffraction of the zero order. The second light beam, transmitted by diffraction of the zero order, spreads over a certain width of wavelengths, but does not diverge even after diffraction. | 05-28-2009 |
20090135488 | OPTICAL DEVICE AND WAVELENGTH SELECTIVE SWITCH - An optical device and a wavelength selector switch are provided. The optical device includes a diffraction grating having first and second planes and first and second reflecting planes located on a first plane side of the diffraction grating. In the optical device, light input to the second plane of the diffraction grating is diffracted, and then an optical path of the diffracted light is re-input to the first plane of the diffraction grating newly via the first and the second reflecting planes. | 05-28-2009 |
20090190223 | OPTICAL SECURITY MARKING COMPONENT, METHOD OF MANUFACTURING SUCH A COMPONENT, SYSTEM COMPRISING SUCH A COMPONENT, AND READER FOR CHECKING SUCH A COMPONENT - The present invention relates to an optical security marking component producing a first visible configuration when observed through a polarizer oriented in a first orientation, and a second configuration, separate from the first, visible when observed through the polarizer oriented in a second orientation, the optical component comprising a stamped film for forming at least two diffraction gratings having different orientations, characterized in that each of said gratings has a period of less than 550 nm and a modulation between 0.25 and 0.5 relative to a reference plane. | 07-30-2009 |
20090213461 | Optical Module - An optical module according to the invention can achieve an optical system using a transmission-type diffraction grating for bending the optical path of incident light with a specific wavelength by about 90°. A substrate of the transmission-type diffraction grating is mounted at an angle in a range of +5° with respect to the design incident angle α of the incident light. The optical system can be applied to a light multiplexing/demultiplexing module. | 08-27-2009 |
20090231711 | DIFFRACTION GRATING LOW-PASS FILTER - In the diffraction grating low-pass filter, the diffraction grating has a refractive index variation region having a refractive index different from that of the glass substrate and having a lattice shape in the glass substrate, and the refractive index variation region includes a plurality of phases depending on differences of optical path lengths. Furthermore, in the diffraction grating low-pass filter, a region having an array of two rows and two columns in which regions of phases 0 and 2φ are arranged in one diagonal direction and regions of phases φ and 3φ are arranged in the other diagonal direction is set as a unit grating. Assuming that m is any one of integers of 1 to 3, the unit grating satisfies the following conditional expression: |mφ−mπ/2|≦(mπ/2)/5 | 09-17-2009 |
20090231712 | DIFFRACTIVE OPTICAL ELEMENT, OPTICAL SYSTEM, AND OPTICAL APPARATUS - The diffractive optical element includes a first diffraction grating and a second diffraction grating, which are formed of materials different from each other, the first diffraction grating and the second diffraction grating are stacked so as not to provide any air layer therebetween. The diffractive optical element satisfies conditions of nd109-17-2009 | |
20090244706 | Illumination Method for Displaying Different Graphical Layouts - The specification and drawings present a new method, apparatus and software product for illuminating different graphical layouts in a component comprising an optical device, e.g., in a keyboard or in a liquid crystal display of an electronic device. The optical device uses a diffractive planar waveguide comprising diffraction gratings disposed on a lightguiding plate and the property that a short period diffractive grating has no diffraction orders at certain conical angles. Therefore, the out-coupling gratings on the waveguide are designed so that the optical beam coming from a certain direction can be effectively coupled out of the waveguide or be kept confined inside of the waveguide due to a total internal reflection. Then different graphical layouts can be disposed on the waveguide using, e.g., pixels having diffraction gratings with periodic lines at different orientations. Multiple substrate (waveguide) arrangements are described. | 10-01-2009 |
20090273840 | WAVELENGTH DISPERSING DEVICE - A compact wavelength dispersing device and a wavelength selective optical switch based on the wavelength dispersing device is described. The wavelength dispersing device has a folding mirror that folds the optical path at least three times. A focal length of a focusing coupler of the device is reduced and the NA is increased, while the increased optical aberrations are mitigated by using an optional coma-compensating wedge. A double-pass arrangement for a transmission diffraction grating allows further focal length and overall size reduction due to increased angular dispersion. | 11-05-2009 |
20090290217 | Three-Dimensional Diffractive Structure, Method For Making, and Applications Thereof - Three-dimensional grating device includes two (crossed) diffraction gratings, exhibits diffraction efficiency substantially independent of the incident polarization inside an optical communication spectral window from 1.5-1.6 μm. The gratings are characterized by different periods in two directions, chosen to support only one dispersive diffraction order in addition to the zero- (specular) order. Gratings may be orthogonal. Exemplary grating profiles include but are not limited to sinusoidal and truncated pyramidal (trapezoidal) profiles. A method for diffracting polarization independent light with 90% or higher efficiency. Applications include various wavelength control devices particularly useful in telecommunications. | 11-26-2009 |
20100118404 | ANTIREFLECTION OPTICAL DEVICE AND METHOD OF MANUFACTURING MASTER - An optical device is provided including plural structures formed of a convex portion or a concave portion are arranged on the surface of a base member with a fine pitch equal to or less than the wavelength of visible light. The structures are arranged on the surface of the base member to form plural lines of tracks and form a hexagonal lattice pattern or a quasi-hexagonal lattice pattern. Each structure has an elliptical cone shape or a truncated elliptical cone shape of which the long-axis direction is parallel to the track extending direction. | 05-13-2010 |
20100226012 | 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 |
20100226013 | 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 |
20100238555 | OPTICAL ELEMENT, LIQUID CRYSTAL DEVICE, AND DISPLAY - An optical element having a function of splitting incident light into polarized beams includes a substrate transparent for the incident light; a diffractive structure that includes a plurality of concave portions and a plurality of convex portions alternately arranged with each other, each of the plurality of concave portions and convex portions having a rectangular sectional shape and that is provided on a first surface of the substrate; and a grid that includes a plurality of fine lines extending in a single direction and that is provided across a top surface of the diffractive structure on the first surface of the substrate, wherein conditions: d<λ and λ/n<δ≦λ are satisfied when λ represents a wavelength of the incident light; d represents a distance between the neighboring fine lines; δ represents a distance between the convex portions; and n represents a refractive index of a material forming the substrate. | 09-23-2010 |
20100246005 | Encoded particle having a grating with variations in the refractive index - Microparticles | 09-30-2010 |
20100321781 | DEVICE FOR EXPANDING AN EXIT PUPIL IN TWO DIMENSIONS - A diffractive beam expander ( | 12-23-2010 |
20110043917 | DIFFRACTIVE LASER BEAM HOMOGENIZER INCLUDING A PHOTO-ACTIVE MATERIAL AND METHOD OF FABRICATING THE SAME - A method of manufacturing a plurality of diffractive optical elements includes providing a partially transmissive slide, providing a first piece of PTR glass, and directing first UV radiation through the partially transmissive slide to impinge on the first piece of PTR glass. The method also includes exposing predetermined portions of the first piece of PTR glass to the first UV radiation and thermally treating the exposed first piece of PTR glass. The method further includes providing a second piece of PTR glass and directing second UV radiation through the thermally treated first piece of PTR glass to impinge on the second piece of PTR glass. The method additionally includes exposing predetermined portions of the second piece of PTR glass to the second UV radiation, thermally treating the exposed second piece of PTR glass, and repeating providing and processing of the second piece of PTR glass using additional pieces of PTR glass. | 02-24-2011 |
20110141567 | Selective diffractive optical element and a system including the same - A selective diffractive optical element includes a first diffractive region having a first design on a first surface of a substrate, and a second diffractive region having a second design on the first surface of the substrate, the first and second designs being different, wherein, by altering a position of a cross-section of an illumination beam, the selective diffractive optical element outputs a desired proportion of the two diffractive patterns aligned along an optical axis of the illumination beam. | 06-16-2011 |
20110267693 | METHOD OF MANUFACTURING DIFFRACTION LENS - A novel manufacturing method for a diffraction lens, whereby aperture and eccentricity effects can be suppressed and any multi-focusing effect can also be obtained in a more stable manner. A synchronous structure is set up where at least two reliefs whose first order diffracted lights give respective focal distances different from one another are set to overlap with each other in at least a part of an area in a radial direction of a diffraction lens, and with respect to every grating pitches of one relief having the maximum grating pitch among the reliefs set up in overlap, grating pitches of another relief are overlapped periodically; and the resulting relief pattern is formed on a surface of an optical material. | 11-03-2011 |
20110299165 | Diffractive Optical Elements And Applications Thereof - A fanout diffractive optical element having a discrete periodic surface relief structure having a | 12-08-2011 |
20120008209 | DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL SYSTEM INCLUDING THE SAME - A diffractive optical element includes a diffraction grating portion including a first diffraction grating and a second diffraction grating, the first diffraction grating and the second diffraction grating being formed of different materials and being stacked so that grating surfaces thereof are in contact with each other, in which the first diffraction grating is formed of a first grating material having at least three kinds of materials mixed therein, and the following conditions are satisfied: nd101-12-2012 | |
20120013985 | METHOD FOR CORRECTING OPTICAL PROXIMITY EFFECTS - A system provided with a first projection objective including at least one optical proximity correction (OPC) filter having a filter function adapted to a particular pattern. The first projection objective and a second projection objective in the system have, for the particular pattern, to which the filter function of the optical proximity correction (OPC) filter is adapted, at least essentially the same imaging properties. The first projection objective differs from the second projection objective with respect to optical imaging properties for the particular pattern when the optical proximity correction (OPC) filter is not present in the first projection objective. An associated method is also disclosed. | 01-19-2012 |
20120162771 | PIXELATED OPTICAL FILTER AND METHOD FOR MANUFACTURING THEREOF - The present invention discloses a pixelated 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 pixelated optical filter. The grated structure comprises a plurality of at least one grating pattern that is planarly bounded. Each of the plurality of at least one grating pattern constitutes a subpixel. A plurality of subpixels is operative to diffract incident light to at least one zero-order wavelength spectrum respective of the at least one grating pattern. Additional and alternative embodiments are disclosed and claimed. | 06-28-2012 |
20120212821 | 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 | 08-23-2012 |
20120300302 | OPTIMIZED DIELECTRIC REFLECTIVE DIFFRACTION GRATING - A method for producing a reflective diffraction grating. The diffraction grating includes a stack of at least four dielectric material layers, and an upper dielectric material layer that is etched to form grooves of the diffraction grating having a predetermined pitch, The diffraction grating is produced by selecting the number and the nature of the dielectric material layers, digitally computing the reflection and/or transmission efficiencies of at least one of the orders of diffraction of the diffraction grating for a sample of frequencies of the spectral range of use for each of several predetermined diffraction grating configurations while varying the thicknesses of the at least four layers and at least one of the etching parameters of the upper layer, and selecting, from among the computed configurations, at least one configuration depending on the use of the grating. | 11-29-2012 |
20130021668 | DEVICE FOR COMPENSATION OF TIME DISPERSION APPLIED TO THE GENERATION OF ULTRASHORT LIGHT PULSES - The invention relates to a device for compensating the temporary scattering applied to the generation of ultra-short light pulses, said device including two identical and parallel optical diffraction gratings RA, RB and two identical prisms PA, PB that are placed inside the above-mentioned optical diffraction gratings RA, RB, given that the above-mentioned optical diffraction gratings RA, RB are volume phase gratings that function, during transmission, on the principle of Bragg diffraction. The outer surfaces FeA, FeB of the above-mentioned prisms PA, PB are parallel to the above-mentioned optical diffraction gratings RA, RB, and the inner surfaces FiA, FiB of the above-mentioned prisms PA, PB are parallel therebetween. | 01-24-2013 |
20130033752 | DIFFRACTION-TYPE 3D DISPLAY ELEMENT AND METHOD FOR FABRICATING THE SAME - A diffraction-type 3D display element is arranged on an image output face of a 3D display device and comprises a first diffraction area and a second diffraction area. The first diffraction area has a plurality of first stepped gratings spaced apart from each other. The second diffraction area has a plurality of second stepped gratings spaced apart from each other. The second diffraction area is adjacent to the first diffraction area and is arranged symmetrically to the first diffraction area with a central line being the symmetric axis. The diffraction-type 3D display element of the invention diffracts the images output by the 3D display device and projects the diffracted images to two different viewing areas to provide 3D images for users. | 02-07-2013 |
20130050829 | BEAMSPLITTER AND METHOD OF BEAMSPLITTING - A beamsplitter for splitting the light of an incident beam into four separate beams. The beamsplitter includes a pair of gratings each disposed preferably normal to the incident beam and having grating vectors preferably orthogonal to one another. The pair of gratings may be formed on opposite sides of a common substrate. A method of splitting an incident, collimated beam of light of a given wavelength into four separate collimated beams each disposed at angles of elevation θ | 02-28-2013 |
20130107367 | GRATING | 05-02-2013 |
20130135740 | OPTICAL WAVELENGTH DISPERSION DEVICE AND METHOD OF MANUFACTURING THE SAME - An optical wavelength dispersion device includes a first substrate, an input unit formed on the first substrate having a slit for receiving an optical signal, a grating formed on the first substrate for producing a diffracted light beams from the optical signal, a first optical reflector formed on the first substrate for reflecting the diffracted light beams from the grating for outputting, and a second substrate covered on the top of the input unit and the grating, wherein the input unit, the grating and the first optical reflector are formed from a photo-resist layer by high energy light source exposure. | 05-30-2013 |
20130141790 | DIFFRACTIVE OPTICAL ELEMENT AND IMAGING APPARATUS USING THE SAME - It is an objective of the present disclosure to prevent or reduce cracks in edge portions of raised portions of a diffractive optical element. | 06-06-2013 |
20130201560 | Two-dimensional Laser System Employing Two Dispersive Elements - An apparatus and method for two-dimensional wavelength beam combining of a plurality of laser sources. In one embodiment, an external cavity multi-wavelength laser comprises an array of laser gain elements, two optical transform lenses, two dispersive elements, an imaging system, a deflective array, and an output coupler. First and second optical transform lenses spatially overlap optical beams in first and second dimensions forming regions of overlap at the first and second dispersive elements. The deflective array comprises a plurality of mirrors wherein each mirror deflects and rearranges the optical beams from a common row. The dispersive elements introduce wavelength discrimination that when combined with the output coupler, provide the required feedback gain. The output coupler creates a single output port for the plurality of external optical cavities established in unison with the plurality of laser emitters. The output coupler transmits a multi-wavelength output beam comprising spatially overlapped coaxial optical beams. | 08-08-2013 |
20130235459 | OPTICAL DEVICE - An optical device | 09-12-2013 |
20140126060 | DIFFRACTION GRATING AND OPTICAL DEVICE USING SAME - The diffraction grating is a transmission-type diffraction grating having a repeating structure of projection and recess on at least one surface of a substrate. A sub-structure of which the cross section is approximated as a triangle or a trapezoid is provided in the recess. The height H of the projection and the height h of the sub-structure are set such that the ratio of the height h of the sub-structure to the height H of the projection is in the range of from 0.05 to 0.45. | 05-08-2014 |
20140139921 | TIME DISPERSION COMPENSATING DEVICE APPLIED TO THE GENERATION OF ULTRA-SHORT LIGHT PULSES - A device for compensating time dispersions applied to the generation of ultra-short pulses, includes: two transparent optical diffraction gratings (RA, RB), which are identical and parallel to each other, operating on the principle of the Bragg diffraction, and two identical prisms (PA, PB), placed head to tail, in the space separating the optical diffraction gratings (RA, RB), knowing that the outer faces (FeA, FeB) of the prisms are parallel to each other and form a non-zero angle (γ) with the faces of the optical diffraction gratings. | 05-22-2014 |
20140139922 | WAVELENGTH DISPERSING DEVICE - A compact wavelength dispersing device and a wavelength selective optical switch based on the wavelength dispersing device is described. The wavelength dispersing device has a folding mirror that folds the optical path at least three times. A focal length of a focusing coupler of the device is reduced and the NA is increased, while the increased optical aberrations are mitigated by using an optional coma-compensating wedge. A double-pass arrangement for a transmission diffraction grating allows further focal length and overall size reduction due to increased angular dispersion. | 05-22-2014 |
20140146393 | TRANSMITTED LIGHT CONTROL DEVICE - There is provided is a transmitted light control device capable of controlling a peak wavelength and a peak intensity of transmitted light while keeping a sharp wavelength width. | 05-29-2014 |
20140211313 | LENS HAVING AN EXTENDED RANGE OF FOCUS AND METHOD OF MAKING THE SAME - A lens having an extended range of focus is made of a transparent material and has two optical surfaces. The lens defines an optical axis and a focal power distribution (F | 07-31-2014 |
20140247492 | DIFFRACTION OPTICAL ELEMENT, OPTICAL SYSTEM, AND OPTICAL APPARATUS - A diffraction optical element including: a diffractive grating provided with a grating surface and a grating wall surface; and a thin film arranged on the grating wall surface and being transparent with respect to light of a used wavelength range, wherein
| 09-04-2014 |
20140368916 | DISPERSIVE DEVICE AND WAVELENGTH SELECTIVE SWITCH - A dispersive device has a beam expanding optical system which includes first and second prisms each having a pair of faces inclined relative to each other, and expands light containing a plurality of wavelength components by passing the light through each of the faces of the first and second prisms; and a dispersive element which emits the light expanded by the beam expanding optical system, at different diffraction angles by the respective wavelength components. A direction of variation of an output angle of the light emitted from the beam expanding optical system due to temperature change is configured to be a direction to suppress variation of the diffraction angles of the respective wavelength components emitted from the dispersive element due to the temperature change. | 12-18-2014 |
20140368917 | DIFFRACTION GRATING - Provided is a diffraction grating having a surface with a groove-and-ridge structure formed with a preset periodic distance, the groove-and-ridge structure including a plurality of grooves, wherein a concave structure and/or a convex structure extending across at least one of the grooves and having a level difference from the bottom surface of the groove is formed on the surface. In the diffraction grating according to the present invention, the diffracting grooves in the groove-and-ridge structure formed with the preset periodic distance are divided into a plurality of sections. Therefore, even if oil or water contained in air-born dust, the sebum or perspiration of a user, or a similar liquid substance is adhered to the surface of the diffraction grating, the oil or the like will not spread over an area other than the section to which it has adhered. Thus, a decrease in the diffraction efficiency is prevented. | 12-18-2014 |
20140376092 | INTEGRATED STRUCTURED-LIGHT PROJECTOR - Optoelectronic apparatus includes a semiconductor die and a monolithic array of light-emitting elements formed on the semiconductor die in a grid pattern comprising multiple columns. Conductors formed on the die define a respective common contact for driving each column of the light-emitting elements. | 12-25-2014 |
20150085364 | HOWLLOW-STRUCTURE METAL GRATING - A hollow-structure metal grating is provided. The hollow-structure metal grating includes a substrate, a number of connecting metal layers, and a number of hollow metal protrusions spaced and located on a surface of the substrate. A space is defined between each of the number of hollow metal protrusions and the substrate. | 03-26-2015 |
20150085365 | LOW BIREFRINGENT SENSOR SUBSTRATE AND METHODS THEREOF - A resonant waveguide article, including: a polymeric substrate having at least one integral grating region, wherein the article has a low birefringence property of for example, from about 5 to 270 nm/cm, as defined herein. Also disclosed is a microplate including the resonant waveguide article, and an integral well plate bonded to the sensor article, as defined herein. Also disclosed are methods of making a sensor article, and a method of making and using the microplate including the sensor article, as defined herein. | 03-26-2015 |
20160085000 | POSITIVE MICROCONTACT PRINTING - A process for positive microcontact printing, including inking a patterned mold with a thiol; contacting the mold with a metal surface of a substrate; backfilling the metal surface with a solution containing an aromatic amine to form a backfilling layer; etching the metal surface of the substrate; and rinsing the substrate to remove the backfilling layer. | 03-24-2016 |
20160197452 | Integrated structured-light projector | 07-07-2016 |
20160377874 | OPTICAL ELEMENT ARRANGEMENTS FOR VARYING BEAM PARAMETER PRODUCT IN LASER DELIVERY SYSTEMS - In various embodiments, laser delivery systems feature one or more optical elements for receiving a radiation beam and altering the spatial power distribution thereof, a lens manipulation system for changing a position of at least one optical element within the path of the radiation beam, and a controller for controlling the lens manipulation system to achieve a target altered spatial power distribution on a workpiece. | 12-29-2016 |