Optical Device Patents (Class 430/321)
  • Patent number: 10932901
    Abstract: Methods and systems wherein laser induced refractive index changes by focused femtosecond laser pulses in optical polymeric materials or optical tissues is performed to address various types of vision correction.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: March 2, 2021
    Assignee: University of Rochester
    Inventors: Leonard Zheleznyak, Scott Catlin
  • Patent number: 10884334
    Abstract: To provide a photocurable resin composition comprising an N-vinyl amide compound, a polyfunctional (meth)acrylate monomer and a photopolymerization initiator and having excellent adhesion to an optical substrate and free from an appearance defect such as a crack or shrinkage and a laminate having a coat layer obtained by curing the photocurable resin composition.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: January 5, 2021
    Inventors: Masayuki Miyazaki, Junji Momoda, Junji Takenaka, Takashi Tamukai
  • Patent number: 10886703
    Abstract: A distributed Bragg reflector (DBR) structure on a substrate includes a high refractive index layer comprising titanium oxide (TiO2) and a low refractive index layer having a high carbon region and at least one low carbon region that contacts the high refractive index layer. Multiple layers of the high refractive index layer and the low refractive index layer are stacked. Typically, the multiple layers of the high refractive index layer and the low refractive index layer are stacked to a thickness of less than 10 microns. Each of the respective layers of the high refractive index layer and the low refractive index layer have a thickness of less than 0.2 microns.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: January 5, 2021
    Assignee: Lumileds LLC
    Inventors: Ken Shimizu, Hisashi Masui, Ted Wangensteen
  • Patent number: 10877188
    Abstract: A composite diffuser plate capable of inhibiting luminance unevenness from occurring locally is described. The composite diffuser plate includes a first diffuser plate and a second diffuser plate arranged in this order from an incident side. At least one of the first diffuser plate and the second diffuser plate is composed of a random microlens array including multiple microlenses. The microlenses include a plurality of parameters defining a lens shape. At least one of the plural parameters is randomly distributed. The random microlens array causes a phase difference to be generated in transmitted light.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: December 29, 2020
    Assignee: KURARAY CO., LTD.
    Inventors: Junji Watanabe, Masaru Karai, Atsushi Uchida
  • Patent number: 10879082
    Abstract: An array of nanowires with a period smaller than 150 nm can be used for optoelectronics and semiconductor electronics applications. A hard nanomask is registered to a lithographically defined feature and can be used to manufacture such structures. This nanomask includes a substantially periodic array of substantially parallel elongated elements having a wavelike cross-section. The fabrication method of the nanomask may be contactless and uses ion beams.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: December 29, 2020
    Assignee: Wostec, Inc.
    Inventors: Valery K. Smirnov, Dmitry S. Kibalov
  • Patent number: 10844166
    Abstract: The present invention relates to a thermoplastic copolymer, block copolymer, and statistical copolymer comprising plural acrylated polyol monomeric units having different degrees of acrylation of hydroxyl groups. The acrylated polyol monomeric units have an average degree of acrylation greater than 1 and less than the number of the hydroxyl groups of the polyol. The present invention also relates to a method of making the thermoplastic copolymer, block copolymer, and statistical copolymer, and using them in various applications, such as asphalt rubber modifiers, adhesives, or an additive in a fracking fluid for oil fracking.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: November 24, 2020
    Inventors: Eric W. Cochran, R. Christopher Williams, Nacu Hernandez, Elvira Joana Ferreira Peralta, Michael John Forrester
  • Patent number: 10845516
    Abstract: A diffractive optical element is provided that includes a first resin layer having steps on one surface, a second resin layer integrated with the first resin layer in tight contact, and a high refractive index layer disposed between a wall surface of the first resin layer and a wall surface of the second resin layer, wherein the high refractive index layer has a refractive index higher than those of the first resin layer and of the second resin layer, and the high refractive index layer is formed continuously to extend beyond the boundary between the wall surface and the inclined surface adjacent thereto, and to partly overlap the inclined surface.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: November 24, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenichi Iwata
  • Patent number: 10843419
    Abstract: 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.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: November 24, 2020
    Inventors: Toshiki Toda, Akira Nagano, Shingo Maruyama
  • Patent number: 10809455
    Abstract: A laser-written waveguide comprising, an optical substrate having a first refractive index, a plurality of laser-written tracks buried within the optical substrate and having a second refractive index lower than the first refractive index, one or more concentric geometric regions bounding the plurality of laser-written tracks and a waveguide channel delimited by said concentric geometric regions, wherein said waveguide channel is configured to allow formation of an optical mode.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: October 20, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Mark Thomas Triplett, Dzhakhangir V. Khaydarov, Xiaozhen Xu, Gennady Imeshev
  • Patent number: 10684397
    Abstract: A refractive coating such as a white layer is disposed on a housing component of a portable electronic device. The refractive coating includes pigment particles such as titanium dioxide suspended in a carrier medium such as a polymer matrix. The pigment particles each define air pores or other voids formed by at least partially sintering the pigment particles. A difference in refractive index between the air pores and the pigment particles is greater than that between the carrier medium and the pigment particles. Incident light is refracted at interfaces between the pigment particles and the air pores, increasing light refracted by the refractive coating compared to refractive coatings including pigment particles lacking the air pores.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: June 16, 2020
    Assignee: Apple Inc.
    Inventor: James R. Wilson
  • Patent number: 10684419
    Abstract: Optical waveguide connector elements for optical coupling optical components of an optical assembly, such as the edge coupling of optical printed circuit boards. In one embodiment, a waveguide connector element includes a first end face and a second end face, a pre-existing optical waveguide within or on a surface of the waveguide connector element, and a laser written optical waveguide optically coupled to an end of the pre-existing optical waveguide and extending toward one of the first end face and the second end face.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: June 16, 2020
    Assignee: Corning Optical Communications LLC
    Inventors: Davide Domenico Fortusini, Lars Martin Otfried Brusberg, James Scott Sutherland
  • Patent number: 10628905
    Abstract: Novel tools and techniques for signatures and entitlements of entertainment printables are provided. A method might include receiving, at a three-dimensional (“3-D”) printer, a request from a user to print a 3-D model and determining, with the 3-D printer, whether the user is authorized to print the 3-D model. The method might further include printing, with the 3-D printer, the 3-D model based on a determination that the user is authorized to print the 3-D model and embedding, with the 3-D printer, within the 3-D model, a unique identifier. The unique identifier may indicate that the user was authorized to print the 3-D model and identify at least one of an original creator of the 3-D model, the 3-D model itself, a limited edition of the 3-D model, or an owner of the 3-D model.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: April 21, 2020
    Assignee: CenturyLink Intellectual Property LLC
    Inventors: Charles I. Cook, Steven M. Casey, Robert J. Morrill
  • Patent number: 10566364
    Abstract: A resonant-filter image sensor includes a pixel array including a plurality of pixels and a microresonator layer above the pixel array. The microresonator layer includes a plurality of microresonators formed of a first material with an extinction coefficient less than 0.02 at a free-space wavelength of five hundred nanometers. Each of the plurality of pixels may have at least one of the plurality of microresonators at least partially thereabove. The resonant-filter image sensor may further include a layer covering the microresonator layer that has a second refractive index less than a first refractive index, the first refractive index being the refractive index of the first material. Each microresonator may be one of a parallelepiped, a cylinder, a spheroid, and a sphere.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: February 18, 2020
    Assignee: OmniVision Technologies, Inc.
    Inventors: Yuanwei Zheng, Gang Chen, Duli Mao, Dyson H. Tai, Lequn Liu
  • Patent number: 10490402
    Abstract: A processing method is disclosed that enables an improved directed self-assembly (DSA) processing scheme by allowing the formation of improved guide strips in the DSA template that may enable the formation of sub-30 nm features on a substrate. The improved guide strips may be formed by improving the selectivity of wet chemical processing between different organic layers or films. In one embodiment, treating the organic layers with one or more wavelengths of ultraviolet light may improve selectivity. The first wavelength of UV light may be less than 200 nm and the second wavelength of UV light may be greater than 200 nm.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: November 26, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Mark Somervell, Ian Brown, Ihsan Simms, Ainhoa Negreira, Kathleen Nafus
  • Patent number: 10443811
    Abstract: A microlens array includes N microlenses arranged in a predetermined direction on an x-y plane. A projection onto the x-y plane of the vertex of each microlens is arranged in the vicinity of a lattice point of a reference lattice on the x-y plane, the lattice spacing of the reference lattice in the predetermined direction being D/M (millimeters) where M is a positive integer. A distance between two sides of a lens facing each other is approximately equal to D, and a distance between the projection onto the x-y plane of the vertex of the lens and the projection onto the x-y plane of a side of the lens is D/2+?i. Letting n represent the refractive index of the material of each microlens and letting f (millimeters) represent the focal length of each microlens, the following relationships are satisfied. 0.0042 D < D 2 ? ? f = D ? ( n - 1 ) 2 ? ? R 0.0048 ? f ? { 1 + ( D / 2 ? ? f ) 2 } < ? < 0.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: October 15, 2019
    Assignee: NALUX CO., LTD.
    Inventors: Daisuke Seki, Kayoko Fujimura, Masato Okano, Yukinobu Nishio, Tomohito Kuwagaito
  • Patent number: 10421857
    Abstract: A photocurable composition including a fluorine-based polymeric monomer, a (meth)acrylate monomer, and a photoinitiator. An amount of the fluorine-based polymeric monomer is in a range of about 20 parts to less than 40 parts by weight based on 100 parts by weight of the photocurable composition.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: September 24, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jiyun Park, Jaehong Park, Sanghee Yu, Hyungguen Yoon, Kyunghee Lee, Kyungseon Tak, Minhyuck Kang
  • Patent number: 10406973
    Abstract: A visor for use in a vehicle is disclosed. The visor comprises a pivot rod and a first and second shell being engagable to form a visor body. The visor also comprises a vanity and a mirror having at least one clear portion arranged at or near an end thereof. The visor also comprises a circuit board secured to the first shell and a light emitting diode secured to a surface of the circuit board. The visor also comprises a ramp arranged in a back surface of the mirror wherein the ramp is aligned with at least one clear portion of the mirror. The visor mirror having a ramp arranged therein may allow for light to be redirected towards the user of the mirror from the LED.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: September 10, 2019
    Inventors: Anthony R. Janowiak, Andrew Joseph Wieczorek, Martin J. Rathsburg, Jr., Leslie Hinds, John Gerald Nowakowski, Mark Anthony Schuetz
  • Patent number: 10412319
    Abstract: An imaging apparatus includes an image sensor, an optical system, a control circuit, and a signal processing circuit. The image sensor includes a light-shielding film in which light-transmitting regions and light-shielding regions are alternately arranged in at least a first direction within a plane, a photodetector disposed opposite the light-shielding film, and an optically-coupled layer disposed between the light-shielding film and the photodetector. The optically-coupled layer includes a grating which generates a propagating light that propagates in the first direction and a transmitting light that transmits the optically-coupled layer when light of a predetermined wavelength enters the light-transmitting regions. The signal processing circuit extracts two different frames from frames included in a moving image acquired by the image sensor.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: September 10, 2019
    Inventors: Kenji Narumi, Seiji Nishiwaki
  • Patent number: 10261584
    Abstract: A user interface includes both a touchscreen for tactile input and one or more lensless optical sensors for sensing additional, remote gestures. Users can interact with the user interface in a volume of space near the display, and are thus not constrained to the relatively small area of the touchscreen. Remote hand or face gestures can be used to turn on or otherwise alter the tactile user interface. Shared user interfaces can operate without touch, and thus avoid cross-contamination of e.g. viruses and bacteria.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: April 16, 2019
    Assignee: Rambus Inc.
    Inventors: Patrick R. Gill, David G. Stork, Thomas Vogelsang
  • Patent number: 10232575
    Abstract: A method controls fabrication of a multi-layered integrated computational element designed to have a target optical spectrum. A transfer function is generated relating a blue wavelength, shift between an as-annealed optical spectrum and an as-fabricated optical spectrum of a first integrated computational element at a standard temperature. Using the transfer function, an initial compensating red shift is incorporated into a second integrated computational element such that the as-annealed optical spectrum of the second integrated computational element matches the target optical spectrum.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: March 19, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: David L. Perkins, Michael N. Simcock
  • Patent number: 10207680
    Abstract: In a lens plate (18) for an optical sensor device in a vehicle, in particular for a rain sensor, with a transmitter-side lens structure (26) and a receiver-side lens structure (32), the transmitter-side lens structure (26) partially is provided with anti-transmission features which in individual regions of the lens plate (18) partially or completely prevent the passage of the light emitted by a light transmitter (14).
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 19, 2019
    Inventor: Ulrich Backes
  • Patent number: 10199415
    Abstract: The method is provided for fabricating an optical metasurface. The method may include depositing a conductive layer over a holographic region of a wafer and depositing a dielectric layer over the conducting layer. The method may also include patterning a hard mask on the dielectric layer. The method may further include etching the dielectric layer to form a plurality of dielectric pillars with a plurality of nano-scale gaps between the pillars.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: February 5, 2019
    Assignee: Elwha LLC
    Inventors: Gleb M. Akselrod, Erik E. Josberger, Mark C. Weidman
  • Patent number: 10073302
    Abstract: An alignment film for liquid crystal display device includes a first portion positioned towards to the liquid crystal layer and a second portion positioned away from the liquid crystal layer. The first portion provides improved anchoring force while the second portion exhibits a lower volume resistance than the first portion. Thus, AC image sticking and DC image sticking can be minimized at the same time.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: September 11, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: SeungRyull Park, HyunJin Park, JinPil Kim, Han Jin Ahn, Hanseok Lee, Su-Bin Lee
  • Patent number: 10062595
    Abstract: Various embodiments of aligning wafers are described herein. In one embodiment, a photolithography system aligns a wafer by averaging individual via locations. In particular, some embodiments of the present technology determine the center locations of individual vias on a wafer and average them together to obtain an average center location of the set of vias. Based on a comparison of the average center location to a desired center location, the present technology adjusts the wafer position. Additionally, in some embodiments, the present technology compares wafer via patterns to a template and adjusts the position of the wafer based on the comparison.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: August 28, 2018
    Assignee: Micron Technology, Inc.
    Inventors: Yang Chao, Keith E. Ypma, Steve J. Strauch
  • Patent number: 10061194
    Abstract: In accordance with some aspects of the present disclosure, a maskless interferomeric lithography system for fabricating a three-dimensional (3D) photonic crystal using a multiple two-beam-exposures is disclosed. The system can comprise an illumination system comprising an optical arrangement operable to receive radiation from a radiation source and provide three or more tilted two-beam interference pattern exposures to be combined into a three-dimensional pattern; and a substrate operable to be supported by a substrate table, wherein the substrate comprises a photoresist formed on a top surface of the substrate and operable to receive the three-dimensional pattern and wherein means are provided to adjust the position of the substrate in all six mechanical degrees of freedom.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: August 28, 2018
    Assignee: STC.UNM
    Inventors: Steven R. J. Brueck, Alexander K. Raub
  • Patent number: 10043942
    Abstract: An embodiment of the invention comprises a first III-V semiconductor structure including a first light emitting layer disposed between a first n-type region and a first p-type region, and a second III-V semiconductor structure including a second light emitting layer disposed between a second n-type region and a second p-type region. A first contact is formed on a top surface of the first III-V semiconductor structure. A second contact is formed on a bottom surface of the second III-V semiconductor structure. A bonding structure is disposed between the first and second III-V semiconductor structures.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: August 7, 2018
    Assignee: Luminus Devices, Inc.
    Inventors: Ting Li, Thomas Yuan
  • Patent number: 9939577
    Abstract: A diffraction structure includes a supporting layer, a high refractive index layer, and a low refractive index layer. The high refractive index layer has a first refractive index, is formed above the supporting layer, configures a waveguide guiding input light input from an input terminal along a specific direction, and includes an opening section formed along the specific direction. The low refractive index layer has a second refractive index lower that the first refractive index, and is formed so as to cover the high refractive index layer and fill the opening section. The opening section modifies the input light in at least one of direction or speed according to a wavelength of the input light, and outputs the modified light as output light.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 10, 2018
    Inventors: Daisuke Inoue, Tadashi Ichikawa, Akari Nakao, Tatsuya Yamashita, Makoto Nakai
  • Patent number: 9920143
    Abstract: A fluorine-containing highly branched polymer obtained by polymerizing a polyfunctional monomer A that has two or more radically polymerizable double bonds and all or a portion of which has a bisphenol structure, a monomer B having a fluoroalkyl group and at least one radically polymerizable double bond, within a molecule, and a monomer C having at least one ring-opening polymerizable group selected from the group including an epoxy group and an oxetanyl group, and having at least one radically polymerizable double bond, within a molecule, under the presence of a polymerization initiator D with an amount of 5% by mole to 200% by mole to the number of moles of the polyfunctional monomer A; an epoxy resin composition including the polymer; and an epoxy resin cured product obtained from the resin composition.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: March 20, 2018
    Inventors: Tomoko Misaki, Motonobu Matsuyama, Masayuki Haraguchi, Masaaki Ozawa
  • Patent number: 9879108
    Abstract: The composition includes (A) a pigment; and (B) a polymer having (b-1) a bulky amine moiety, (b-2) an acid group, and (b-3) a constituent unit derived from a macromonomer having a weight average molecular weight of 1000 to 50000, in which the bulky amine moiety (b-1) has a nitrogen atom, carbon atoms X1 bonded with the nitrogen atom, and carbon atoms Y1 bonded with the carbon atoms X1, and a total carbon number of the carbon atoms X1 and the carbon atoms Y1 is 7 or more.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: January 30, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Hiroaki Idei, Toshihito Kuge, Takashi Kawashima
  • Patent number: 9864208
    Abstract: In an optical display system that includes a waveguide with multiple diffractive optical elements (DOEs), one or more of the DOEs is configured with gratings that have varying depth and varying directions for depth modulation, in which the modulation direction is aligned with the steepest change (i.e., slope) of grating depth. Depth modulation direction may change at a point of transition between different regions in the DOE. For example, with a zero axis being defined along a line parallel to a long side of a DOE, the depth modulation direction can change from a negative angle, with respect to the axis in the plane of the waveguide in one region, to a positive angle in another region, or vice versa. By varying depth modulation direction in a DOE, display uniformity in the optical display system may be increased.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: January 9, 2018
    Inventors: Tuomas Vallius, Lauri Sainiemi
  • Patent number: 9817164
    Abstract: According to embodiments of the invention, the design and fabrication of a binary superimposed grating (BSG) results in better performing devices that may be fabricated using existing technology. The fabrication process includes forming grating features based upon repeating features of the desired superposition function. The design process also relaxes the processing requirement for equivalently performing devices.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: November 14, 2017
    Assignee: LUMILANT, INC.
    Inventors: Janusz Murakowski, Shouyuan Shi, Dennis W. Prather
  • Patent number: 9647176
    Abstract: A technique of producing a control component for a reflective display device, comprising: forming an array of electronic switching devices; forming over said array of electronic switching devices an insulator region defining a controlled surface topography; and forming on the patterned surface of the insulator region by a conformal deposition technique a substantially planar array of reflective pixel conductors each independently controllable via a respective one of the array of electronic switching devices, wherein each pixel conductor exhibits specular reflection at a range of reflection angles relative to the plane of the array of pixel conductors for a given incident angle relative to the plane of the array of pixel conductors.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: May 9, 2017
    Inventor: Paul Cain
  • Patent number: 9566609
    Abstract: Methods for replicating a nanopillared surface include applying a nanopillar-forming material to a surface of a replica substrate to form a precursor layer on the replica-substrate surface. A template surface of a nanomask may be contacted to the precursor layer. The nanomask may include a self-assembled polymer layer on a nanomask-substrate surface, the template surface being defined in the self-assembled polymer layer. The self-assembled polymer layer may have nano-sized pores with openings at the template surface. The precursor layer may be cured while the template surface remains in contact with the precursor layer. The nanomask is removed to expose a nanopillared surface having a plurality of nanopillars on the replica-substrate surface. The nanopillars on the replica-substrate surface may correspond to the pores in the template surface. Nanopillared surfaces may be replicated on one side of the replica substrate or on two opposing sides of the replica substrate.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: February 14, 2017
    Assignee: Corning Incorporated
    Inventors: Jennifer Lynn Lyon, Jianguo Wang, Ruchirej Yongsunthon, Ying Zhang
  • Patent number: 9494855
    Abstract: Some embodiments of the present disclosure relate to a method for repairing a photomask pattern, comprising receiving a photomask with a first translucent material formed on a transparent substrate, which forms an incomplete version of the photomask pattern. Missing portions of the photomask pattern are detected by comparing the incomplete version of the photomask pattern to a complete version of the photomask pattern. After detecting the missing portions, the photomask pattern is completed by using a second translucent material, which is different than the first translucent material, to form the missing portions. The second translucent exhibits the same transmissive property as the first translucent material. Consequently, both the repaired and unrepaired portions of the pattern have the same transmissive properties with respect to attenuation and phase shifting of incident radiation to enhance pattern resolution in the repaired portion of the photomask pattern.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: November 15, 2016
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Yuan-Chih Chu
  • Patent number: 9442291
    Abstract: An optical combiner for a head-wearable display includes an eyepiece body and a plurality of diffractive optical element (“DOE”) segments. The eyepiece body has an eye-ward side and an external scene side. The DOE segments are disposed within the eyepiece body and are at least partially reflective to image light incident through the eye-ward side of the eyepiece body and at least partially transmissive to external scene light incident through the external scene side of the eyepiece body. The DOE segments are disjoint from each other and each is disposed along a different disjoint surface within the eyepiece body that is oriented at a different angle relative to the other DOE segments. The plurality of DOE segments operate to magnify and reflect the image light incident from an off-axis position to an eyebox sized area.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: September 13, 2016
    Assignee: Google Inc.
    Inventors: Marc Andrew Martinez, Ehsan Saeedi, Bernard C. Kress
  • Patent number: 9429471
    Abstract: A plurality of photodiodes arrayed in a one-dimensional form are divided into a plurality of groups. The structure of an antireflection coating is changed for each group so that all the surfaces of the photodiodes belonging to each group are covered with an antireflection coating having a transmittance characteristic which shows a maximum transmittance within a range of wavelengths of light to be received by those photodiodes. In particular, a SiO2 coating layer on the silicon substrate and an Al2O3 coating layer are common to all the photodiodes, while the structure of the upper layers are modified with respect to the wavelength. Within an ultraviolet wavelength region, the coating structure is more finely changed with respect to the wavelength. By such a design, the transmittance can be improved while making the best efforts to avoid a complex manufacturing process.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: August 30, 2016
    Inventors: Hideki Tominaga, Ryuta Hirose, Kenji Takubo, Shigetoshi Sugawa, Rihito Kuroda
  • Patent number: 9389344
    Abstract: A spectroscopic polarimeter and methods of manufacturing the same are provided. The spectroscopic polarimeter is described as being fabricated by etching or patterning grooves into a substrate with a centrally smooth area, laying down an opaque thin layer of metal, etching out a central cavity from the metal, laying down a thin layer of dielectric material, and then laying down metal over the cavity. Optionally, before or after the dielectric layer is laid, a thicker metal barrier at the edge of the design can be laid as well.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: July 12, 2016
    Assignee: Colorado School of Mines
    Inventors: P. David Flammer, Jonathan Peltzer, Russell Hollingsworth
  • Patent number: 9362532
    Abstract: An apparatus for ablating a substrate of a display apparatus, the apparatus including a stage, the stage being configured to receive thereon a carrier substrate, the carrier substrate having attached thereto the display apparatus, a light source unit, the light source unit being configured to emit light towards the stage, a measuring unit, the measuring unit being configured to measure a transmittance of the carrier substrate, and a control unit, the control unit being configured to control the light source unit to emit light sufficient to ablate the substrate of the display apparatus according to the transmittance of the carrier substrate as measured by the measuring unit.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: June 7, 2016
    Inventor: Seong Ryong Lee
  • Patent number: 9327483
    Abstract: A simple and innovative process for manufacturing a high performance mechanical polarizing device is provided. The invention utilizes an inexpensive, high output production process where a transparent film substrate is coated with a non-transparent layer by deposition or other wet or dry method. Then a photoresist or a nano-imprint lithography process is used to overlay the non-transparent coated film with a pattern. The exposed non-transparent material is then removed by means of acid or base etching or the use of other mechanical or nano-technology removal methods. The photoresist is then removed and a protective layer may then be applied to the polarizer substrate. According to another embodiment, nano-imprinting techniques are used to prepare the polarizer substrate. The process may be automated in one or more embodiments, and lends itself to a high speed production manufacturing line, utilizing roll-to-roll, sheet fed or other methods of automated manufacturing.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: May 3, 2016
    Inventors: Primal Fernando, Steve Fischer
  • Patent number: 9279964
    Abstract: A wafer level optical lens structure is provided. A stress buffer layer is disposed between a light-transmissive substrate and a lens layer, so as to improve production yield of the wafer level optical lens.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: March 8, 2016
    Inventors: Yun-Lien Hsiao, Shu-Hao Hsu
  • Patent number: 9263628
    Abstract: A method for making a LED comprises following steps. A substrate having a surface is provided. A first semiconductor layer, an active layer and a second semiconductor pre-layer is formed on the surface of the substrate. A patterned mask layer is applied on a surface of the second semiconductor pre-layer. A number of three-dimensional nano-structures is formed on the second semiconductor pre-layer and the patterned mask layer is removed. The substrate is removed and a first electrode is formed on a surface of the first semiconductor layer away from the active layer. A second electrode is formed to electrically connect with the second semiconductor pre-layer.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: February 16, 2016
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yuan-Hao Jin, Qun-Qing Li, Shou-Shan Fan
  • Patent number: 9255771
    Abstract: The present invention relates to target acquisition and related devices, and more particularly to telescopic gunsights and associated equipment used to achieve shooting accuracy at, for example, close ranges, medium ranges and extreme ranges at stationary and moving targets.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: February 9, 2016
    Assignee: HORUS VISION LLC
    Inventors: Dennis J. Sammut, Todd Hodnett
  • Patent number: 9258007
    Abstract: A scale of a photoelectric encoder includes a base member and gratings on the base member. The gratings can be formed on the surface of the base member by plating and arranged at a prescribed pitch on the base member. The surface of the base member is a roughened surface which is roughened by sandblasting or with a chemical. The gratings are light absorptive gratings or light reflective metal gratings.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: February 9, 2016
    Inventors: Toshihiko Aoki, Fujio Maeda, Michihiko Togashi
  • Patent number: 9245544
    Abstract: A surface forming method for electronic component includes: forming a body that has at least one waveguide, with two ends of the waveguide exposed on a front end surface and a back end surface of the body; forming a photoresist film to cover on the front end surface of the body; irradiating a light from the back end surface of the body to remove a part, of the photoresist film, that covers at least a part of an end surface of the waveguide, thereby forming an exposed area on the end surface of the waveguide; etching the exposed area of the waveguide to form a recess; and removing the photoresist film. The position and size of the pattern could be controlled accurately and efficiently, instead of inefficient complex procedures of alignment.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: January 26, 2016
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Natsuo Nishijima, Jian Hui Huang, Hong Tao Ma, Huan Chao Liang
  • Patent number: 9223177
    Abstract: Disclosed herein are an acrylate compound having a photoreactive group, a photoreactive acrylate polymer, and a photo-alignment layer including the same that not only have excellent alignment properties and alignment rate and readiness for change in the alignment direction based on the polarization direction of radiation, but also exhibit a high solubility to organic solvents and good workability.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: December 29, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Dong-Woo Yoo, Sung-Ho Chun, Dai-Seung Choi
  • Patent number: 9212991
    Abstract: A refractive index measurement apparatus includes a light source, a measurement cell including a sample as an object of refractive index measurement and diffracting light incident from the light source, a detector that detects the amount of diffracted light in at least one diffraction order other than zero order of diffracted light exiting from the measurement cell, and a control unit that determines refractive index of the sample based on the measured value of the amount of diffracted light by the detector. The measurement cell includes two substrates disposed so as to be opposed to each other and a diffraction grating disposed between the two substrates, and the diffraction grating has a plurality of members whose width decreases stepwise as approaching from one of the substrates to the other of the substrates, the sample being filled in the space between the substrates not occupied by the diffraction grating.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: December 15, 2015
    Inventors: Yuka Saito, Nobuyuki Hashimoto
  • Patent number: 9178113
    Abstract: A method for making a LED comprises following steps. A substrate having a first surface and a second surface is provided. A patterned mask layer is applied on a first surface. A number of three-dimensional nano-structures are formed on the first surface and the patterned mask layer is removed. A first semiconductor layer, an active layer and a second semiconductor layer are formed on the second surface. A first electrode and a second electrode are formed to electrically connect with the first semiconductor layer and the second semiconductor pre-layer respectively.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: November 3, 2015
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yuan-Hao Jin, Qun-Qing Li, Shou-Shan Fan
  • Patent number: 9164370
    Abstract: An exposure apparatus which exposes a substrate coated with a photoresist to form a latent image to the photoresist, comprises an original holding unit configured to hold an original including a phase-modulation diffraction grating so that an interference pattern is formed on a surface of the substrate by a light beam diffracted by the original, a substrate holding unit configured to hold the substrate, and a light beam dividing optical system configured to divide a light beam to form a plurality of light beams which enter the original, wherein a latent image is formed on the substrate by superposition of a plurality of interference patterns formed on the surface of the substrate, the plurality of interference patterns respectively corresponding to the plurality of light beams which enter the original.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: October 20, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Kishikawa, Tokuyuki Honda, Seiji Takeuchi
  • Patent number: 9116432
    Abstract: Multiple patterned exposures of a single layer of image reversal resist prior to and following image reversal processing, upon development, respond to the respective exposures as either a positive or a negative resist, allowing a desired shape of a resist structure to be built up from any of a number of combinations of primitive masks. Exploiting the image reversal resist in this manner allows several types of diffraction distortion to be entirely avoided and for many sophisticated lithographic processes to he reduced in complexity by one-half or more while any desired resist structure shape can be formed form a limited number of primitive mask patterns. A regimen, which may be automated as an executable algorithm for a computer may be followed to evaluate different combinations of masks which are valid to produce a desired resist structure shape and select the optimum mask pattern combination to do so.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: August 25, 2015
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Coumba Ndoye, Marius Orlowski
  • Patent number: 9118843
    Abstract: Examples of methods and systems for creating swivel views from handheld video are described. In some examples, a method may be performed by a handheld device to receive or capture a video of a target object and the video may include a plurality of frames and content of the target object from a plurality of viewpoints. The device may determine one or more approximately corresponding frames of the video including content of the target object from a substantially matching viewpoint and may align the approximately corresponding frames of the video based on one or more feature points of the target object to generate an aligned video. The device may provide sampled frames from multiple viewpoints from the aligned video, configured for viewing the target object in a rotatable manner, such as in a swivel view format.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: August 25, 2015
    Assignee: Google Inc.
    Inventors: Sergey Ioffe, Christian Frueh