Grating Patents (Class 385/37)
  • Patent number: 11137548
    Abstract: A grating coupler reflector (retro reflector) is formed within a photonics chip and includes a vertical scattering region, an optical waveguide, and a reflector. The optical waveguide is optically coupled to the vertical scattering region. The reflector is positioned at an end of the optical waveguide. The reflector is configured to reflect light that propagates through the optical waveguide from the vertical scattering region back toward the vertical scattering region. The location of the grating coupler reflector on the photonics chip is determinable by scanning a light emitting active optical fiber over the chip and detecting when light is reflected back into the active optical fiber from the grating coupler reflector. The determined location of the grating coupler reflector on the photonics chip is usable as a reference location for aligning optical fiber(s) to corresponding optical grating couplers on the photonics chip.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: October 5, 2021
    Assignee: Ayar Labs, Inc.
    Inventors: John Fini, Roy Edward Meade, Derek Van Orden, Forrest Sedgwick
  • Patent number: 11125940
    Abstract: A method of fabricating a waveguide device is disclosed. The method includes providing a substrate having an elector-interconnection region and a waveguide region and forming a patterned dielectric layer and a patterned redistribution layer (RDL) over the substrate in the electro-interconnection region. The method also includes bonding the patterned RDL to a vertical-cavity surface-emitting laser (VCSEL) through a bonding stack. A reflecting-mirror trench is formed in the substrate in the waveguide region, and a reflecting layer is formed over a reflecting-mirror region inside the waveguide region. The method further includes forming and patterning a bottom cladding layer in a wave-tunnel region inside the waveguide region and forming and patterning a core layer and a top cladding layer in the waveguide region.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: September 21, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chun-Hao Tseng, Wan-Yu Lee, Hai-Ching Chen, Tien-I Bao
  • Patent number: 11119280
    Abstract: Disclosed are grating couplers having a high coupling efficiency for optical communications. In one embodiment, an apparatus for optical coupling is disclosed. The apparatus includes: a substrate; a grating coupler comprising a plurality of coupling gratings over the substrate, wherein each of the plurality of coupling gratings extends in a first lateral direction and has a cross-section having a middle-raised shape in a second lateral direction, wherein the first and second lateral directions are parallel to a surface of the substrate and perpendicular to each other in a grating plane; and a cladding layer comprising an optical medium, wherein the cladding layer is filled in over the grating coupler.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: September 14, 2021
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Feng-Wei Kuo, Lan-Chou Cho, Huan-Neng Chen, Chewn-Pu Jou, Wen-Shiang Liao
  • Patent number: 11106033
    Abstract: A head-mounted display system is configured to project light to an eye of a user wearing the head-mounted display system to display content in a vision field of said user. The head-mounted display system comprises at least one diffusive optical element, at least one out-coupling optical element, at least one mask comprising at least one mask opening, at least one illumination in-coupling optical element configured to in-couple light from at least one illumination source into a light-guiding component, an image projector configured to in-couple an image and an at least one illumination source is configured to in-couple light into at least one illumination in-coupling optical element, an eyepiece, a curved light-guiding component, a light-guiding component comprising a portion of a frame, and/or two light-guiding components disposed on opposite sides of at least one out-coupling optical element.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: August 31, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Lionel Ernest Edwin, Ivan Li Chuen Yeoh, Zhiheng Jia, Adam C. Carlson
  • Patent number: 11092741
    Abstract: A temperature compensation module mounted in an arrayed waveguide grating (AWG) comprises a base attached to the AWG and a moving member attached to the base, wherein the base comprises: a first fixing part attached to a first sub chip of the AWG; a second fixing part attached to a second sub chip of the AWG; a hole which is a gap between the first fixing part and the second fixing part, and is disposed to include, within the gap, a cut surface for dividing the AWG into the first sub chip and the second sub chip; and a ‘’-shaped elastic part, wherein the moving member is attached to the first fixing part so as to horizontally move the first sub chip of the AWG in the direction of decreasing central wavelength changes caused by temperature changes.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: August 17, 2021
    Assignee: Polslab Inc.
    Inventor: Jin Bong Kim
  • Patent number: 11092806
    Abstract: An image display apparatus includes a first waveguide, a second waveguide positioned at one side of the first waveguide, a first diffraction grating positioned at an other side of the first waveguide, a second diffraction grating positioned between the first waveguide and the second waveguide and a display engine configured to control a shape of the second diffraction grating according to a quantity of light diffracted from the first diffraction grating, wherein at least a portion of light incident on the first waveguide is diffracted from the first diffraction grating, and at least a portion of light incident on the second waveguide, is diffracted from the second diffraction grating.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: August 17, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wonjun Lee, Kyusub Kwak, Kyookeun Lee, Myongjo Choi
  • Patent number: 11086057
    Abstract: An optical wavelength dispersion device is disclosed, which includes a waveguide unit and an adjustable reflecting unit, wherein the waveguide unit has a first substrate, an input unit, a grating, a reflector and a second substrate. The input unit is formed on the first substrate and having a slit for receiving an optical signal, a grating is formed on the first substrate for producing an output beam once the optical signal is dispersed, the reflector is formed on the first substrate for reflecting the output beam, the second substrate is located on the input unit, the grating and the reflector, and forms a waveguide space with the first substrate; the adjustable reflecting unit is located outside of the waveguide unit, and is used for changing emitting angle and adjusting focus of the output beam.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: August 10, 2021
    Inventor: Cheng-Hao Ko
  • Patent number: 11073411
    Abstract: An apparatus is provided which comprises pressure pass-thru means, which includes: an optic fiber having a first end and a second end; a first connector coupled to the first end; a second connector coupled to the second end; a housing between the first and second ends, wherein the housing covers a portion of the optic fiber, wherein a portion of the optic fiber in the housing is bare; a filing material inside the housing; and a swaged gland fitting on the housing to secure the apparatus to a pressure boundary.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: July 27, 2021
    Assignees: Oregon State University, Battelle Energy Alliance, LLC
    Inventors: Wade R. Marcum, Aaron W. Weiss, Daniel P. Labrier, Casey Jesse, Warren F. Jones, John Kennedy, Ann Marie Phillips, Chad Nixon
  • Patent number: 11067734
    Abstract: An illumination device includes a solid waveguide; a plurality of light emitting diodes emitting light of different colors and arranged to project light into at least one of the surfaces of the waveguide; and one or more phosphor materials for converting light emitted by one of the LEDs from one color to another, such that an out-coupling region of the waveguide outputs a mixture of light from at least some of the LEDs and light converted by the phosphors materials.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: July 20, 2021
    Assignee: JUGANU LTD.
    Inventors: Ada Lotan, Tania Kosoburd, Alexander Bilchinsky, Eran Ben Shimul
  • Patent number: 11061187
    Abstract: Planar waveguide junctions are described with a waggled transition section connecting input waveguide sections with output waveguides sections, in which the waggled transitions have alternating segments matching the input waveguide and output waveguides to efficiently transition the optical signal. The planar waveguide junctions can be used to form efficient optical splitters, mixers, or taps.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: July 13, 2021
    Assignee: NeoPhotonics Corporation
    Inventors: Anthony J. Ticknor, Brian R. West
  • Patent number: 11057610
    Abstract: Apparatus for generating a dynamic structured light pattern for optical tracking in three-dimensional space, comprises an array of lasers, such as a VCSEL laser array, to project light in a pattern into a three-dimensional space; and an optical element or elements arranged in cells. The cells are aligned with subsets of the laser array, and each cell individually applies a modulation, in particular an intensity modulation, to light from the laser or lasers of the subset, to provide a distinguishable and separately controllable part of the dynamic structured light pattern. A method of generating a structured light pattern is disclosed, in which light is provided from an array of lasers, and light is individually projected from subsets of the array of lasers to provide differentiated parts of the structured light pattern.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: July 6, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Nitay Romano, Nadav Grossinger, Yair Alpern, Emil Alon
  • Patent number: 11049516
    Abstract: A near-field light generator includes a plasmon generator including a plasmon exciting portion on which a surface plasmon is excited, and a near-field transducer including a front end face that generates near-field light from the surface plasmon. The near-field transducer is formed of a first metal material. The plasmon generator includes a first portion formed of the first metal material and a second portion formed of a second metal material. The first portion is in contact with the near-field transducer. The second portion includes at least part of the plasmon exciting portion.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: June 29, 2021
    Assignee: HEADWAY TECHNOLOGIES, INC.
    Inventors: Yukinori Ikegawa, Yoshitaka Sasaki, Hiroyuki Ito, Shigeki Tanemura, Yoji Nomura
  • Patent number: 11029590
    Abstract: Examples of light projector systems for directing input light from a light source to a spatial light modulator are provided. For example, an optical device is disclosed which includes a first surface having a diffractive optical element, a second surface normal to the first surface, and a third surface arranged at an angle to the second surface. The third surface may be a beam splitting surface that is reflective to light of a first state and transmissive to light of a second state. The diffractive optical element may receive an input beam made up of light having the first state, and may convert the input beam into at least a first diffracted beam at a first diffraction angle such that the first diffracted beam is directed toward the second surface, is reflected by the second surface toward the third surface via total internal reflection, and is reflected by the third surface in a direction substantially parallel to the first surface.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: June 8, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Jahja Trisnadi, Pierre St. Hilaire, Hui-Chuan Cheng, Clinton Carlisle, Michael Anthony Klug, Kevin Richard Curtis
  • Patent number: 11022522
    Abstract: A photonic testing device includes a substrate, an optical device under test (DUT) disposed over the substrate, and an optical input circuit disposed over the substrate. The optical input circuit includes a first plurality of inputs each configured to transmit a respective optical test signal of a plurality of optical test signals. Each of the plurality of optical test signals includes a respective dominant wavelength of a plurality of dominant wavelengths. The optical input circuit further includes an output coupled to an input waveguide of the optical DUT. The output is configured to transmit a combined optical test signal comprising the plurality of optical test signals.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: June 1, 2021
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Marco Piazza, Antonio Canciamilla, Piero Orlandi, Luca Maggi
  • Patent number: 11009394
    Abstract: Devices, systems, reagents, and methods for the performance of multi-spectrum super resolution microscopy are disclosed.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: May 18, 2021
    Assignee: OREGON HEALTH & SCIENCE UNIVERSITY
    Inventors: Joe Gray, Summer Dowell, Xiaolin Nan, Steven Jacques, Don Kania
  • Patent number: 11007383
    Abstract: A measurement device includes a sensing portion and a measuring portion. The sensing portion contains at least a fluorescent material whose emitting of fluorescent light ceases due to an action of a radioactive beam. The measuring portion measures a radiation quantity of the radioactive beam, with which the sensing portion is irradiated, based on an amount of decrease in the intensity of the fluorescent light emitted by the fluorescent material contained in the sensing portion when the radioactive beam acts on at least a portion of the fluorescent material. The fluorescent light is emitted due to irradiation of the fluorescent material by an excitation source.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: May 18, 2021
    Assignees: Cancer Intelligence Care Systems, Inc., FUJIDENOLO CO., LTD.
    Inventors: Yoshio Imahori, Tsuyako Takeyoshi, Hideki Miyazaki, Shinsuke Kato, Norihide Takeuchi, Akari Sakuragi
  • Patent number: 11002702
    Abstract: An optical module includes first and second transparent substrates and a spacer between the first and second transparent substrates, holding the first transparent substrate in proximity to the second transparent substrate, with first and second diffractive optical elements (DOEs) on respective faces of the first and second transparent substrates. At least first and second capacitance electrodes are disposed respectively on the first and second transparent substrates in proximity to the first and second DOEs. Circuitry is coupled to measure changes in a capacitance between at least the first and second capacitance electrodes.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: May 11, 2021
    Assignee: APPLE INC.
    Inventors: Hannah D Noble, Kevin A Sawyer, Martin B Adamcyk, Yazan Z Alnahhas, Yu Qiao Qu, Moshe Kriman, Adar Magen
  • Patent number: 11002893
    Abstract: A transmission grating includes: first light-transmissive regions having a refractive index of n1; and second light-transmissive regions having a refractive index of n2 that is smaller than n1. Light-reflecting interfaces on which light transmitted through the first light-transmissive regions is incident are in parallel with one another and are inclined such that a line normal to each of light-reflecting interfaces is at an inclination angle ? with respect to the flat light-incident surface and to the flat light-emitting surface, wherein 0°<?<90°. When a thickness of the first light-transmissive regions in a direction perpendicular to the light-reflecting surfaces is t1 and a thickness of the second light-transmissive regions in a direction perpendicular to the light-reflecting surfaces is t2, the thickness t2, in ?m, is in a range of 0.1/?(n12?n22)1/2 to t1.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: May 11, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Yukitoshi Marutani
  • Patent number: 11005233
    Abstract: A low noise, single mode laser includes a semiconductor gain element generating light and having a highly reflective first end forming a first end of a laser cavity. The gain element may be monolithically or discretely integrated with, or distinct from, and coupled to a waveguide comprised of a low loss material with a refractive index ‘n’ greater than 3. The waveguide includes a Bragg grating forming the second end of the laser cavity. A cavity phase control section may be provided between the gain element and the Bragg grating. Two photodetector monitors provide a feedback signal for locking the light from the gain element to a specific wavelength on the Bragg grating reflection spectrum by varying at least one of the cavity phase control section and the gain element bias current. The Bragg grating may have a physical length larger than 10 mm and that occupies at least 50% of the optical length of the external cavity.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: May 11, 2021
    Assignee: Morton Hybrid Lasers, LLC
    Inventor: Paul A. Morton
  • Patent number: 10989879
    Abstract: An optical delay between a first fiber and a second fiber is temperature compensated by combining fibers with different thermal path length changes. In some examples, fibers with different buffer coatings exhibit different path length changes per unit length and temperature. Combining such fibers in a fiber array provides a path length difference that is substantially independent of temperature.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: April 27, 2021
    Assignee: Nikon Metrology NV
    Inventors: Anthony R. Slotwinski, Mina A. Rezk, Pavel Slyusarev
  • Patent number: 10983275
    Abstract: A grating coupler couples a waveguide to a beam and is formed of patterned shapes in a first and second layer of planar material, the shapes embedded in background material, the layers separated by less than one wavelength. The shapes are organized as a plurality of adjacent unit cells arranged along a direction of propagation of light with each unit cell including a shape of the first material and a shape of the second material, each unit cell having design parameters including a period, a width wb of the shape of first planar material, a width wt of the shape of second planar material, and an offset between the shapes. The coupler has a directivity ratio D is at least 10 dB between “up” and “down” radiation; and unit cells differ in at least one parameter selected from period, wb, wt, and offset to provide a predetermined beam shape.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: April 20, 2021
    Assignee: The Regents of the University of Colorado, a body corporate
    Inventor: Milos A. Popovic
  • Patent number: 10983062
    Abstract: A system for optically scanning a region comprising a sample of which a chemical composition is to be determined, comprising: a pulsed laser source for emitting a pulsed laser beam; a focusing device for adjusting the position of the waist of the laser beam along an optical path of the laser beam; a deflector for adjusting a propagation direction of the laser beam to a given direction; a controller for varying, via the beam deflector, the propagation direction of the pulsed laser beam according to a predefined beam path and varying, via the focusing device, the given position of the waist of the laser beam along the optical path; and a photodetector for detecting light emitted by a plasma created when a given one of laser pulses has an irradiance is greater than a breakdown threshold, the detected light being indicative of the chemical composition of the sample.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: April 20, 2021
    Assignee: ELEMISSION INC.
    Inventors: Lütfü Çelebi Özcan, François Doucet
  • Patent number: 10979167
    Abstract: Methods and apparatus are provided for wavelength control of multiple independent laser sources to reduce relative wavelength drift between the different laser sources. According to some aspects, multiple laser wavelength control is provided using a multi-line source as a wavelength reference. According to other aspects, multiple laser wavelength control is provided using a single wavelength sensing device. The multiple independent laser sources could generate the constituent optical channels of a super-channel. Benefits could include reduced guard band width and increased spectral efficiency within the super-channel.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: April 13, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Zhiping Jiang
  • Patent number: 10976555
    Abstract: A waveguide display is used for presenting media to a user. The waveguide display includes a light source assembly, an output waveguide, and a controller. The light source assembly projects an image light at least along one dimension. The output waveguide includes a waveguide body with two opposite surfaces. The output waveguide includes an input area, an output area, a first diffractive element on the first side, and a second diffractive element on the second side of the output waveguide. The output area is located between the input area and the first and second diffractive elements. The first and second diffractive elements reflect a second portion of the expanded image light back toward the output area for outcoupling to the eyebox. The controller controls the scanning of the light source assembly to form a two-dimensional image.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: April 13, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Wanli Chi, Hee Yoon Lee
  • Patent number: 10969545
    Abstract: An apparatus and method for temperature compensation, belonging to the technical field of optical communications, and particularly an apparatus and method for implementing bilinear temperature compensation of an arrayed waveguide grating is disclosed. The apparatus consists of two drivers. A first driver performs linear compensation in a range lower than normal temperature 25° C. to ?40° C. (low-temperature area) or a range higher than ambient temperature 25° C. to 85° C. (high-temperature area). A second driver is used to realize nonlinear compensation of superimposed effect of AWG chip wavelength/temperature in another temperature area. Two parts of the chip after being divided have different relative displacement/effective compensation amounts in different temperature ranges, having over-compensation in the high-temperature area and under-compensation in the low-temperature area, so that a center wavelength of the AWG chip appears as two gentle curves with temperature change.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: April 6, 2021
    Inventors: Jiuhong Ling, Fan Wu, Xiangjian Kong, Changan Li, Jiayan Hu
  • Patent number: 10942306
    Abstract: Embodiments of the present disclosure are directed to techniques for manufacturing an eyepiece (or eyepiece layer) by applying multiple, different diffraction gratings to a single side of an eyepiece substrate instead of applying different gratings to different sides (e.g., opposite surfaces) of the substrate. Embodiments are also directed to the eyepiece (or eyepiece layer) that is arranged to have multiple, different diffraction gratings on a single side of the eyepiece substrate. In some embodiments, two or more grating patterns are superimposed to create a combination pattern in a template (e.g., a master), which is then used to apply the combination pattern to a single side of the eyepiece substrate. In some embodiments, multiple layers of patterned material (e.g., with differing refraction indices) are applied to a single side of the substrate. In some examples, the combined grating patterns are orthogonal pupil expander and exit pupil expander grating patterns.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: March 9, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Shuqiang Yang, Vikramjit Singh, Kang Luo, Nai-Wen Pi, Frank Y. Xu, Jr.
  • Patent number: 10901295
    Abstract: The present invention extends the resolution capability for shaping optical pulses on laser systems from the current state of the art resolution of ˜250 ps to ˜1 ps by utilizing a hybrid of EOM and spectral shaping technologies. In one embodiment, a short pulse derived from a mode-locked laser oscillator is dispersed using a dispersive stretcher to about 250 ps, providing a linear mapping of spectrum to time. A typical spectral shaper is used to directly write the desired temporal pattern in the spectral domain to produce a crudely patterned waveform that may also suffer from chirp. The chirp is removed by a process known as difference frequency generation by mixing it with a pulse derived from an equally chirped frequency-doubled pump in an optical parametric amplifier. The pattern is then focused in time, which is accomplished in one embodiment by propagating the pattern through a dispersive element.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: January 26, 2021
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: John E Heebner, Bedros Afeyan
  • Patent number: 10901311
    Abstract: Examples of light projector systems for directing input light from a light source to a spatial light modulator are provided. For example, an optical device is disclosed which includes a first surface having a diffractive optical element, a second surface normal to the first surface, and a third surface arranged at an angle to the second surface. The third surface may be a beam splitting surface that is reflective to light of a first state and transmissive to light of a second state. The diffractive optical element may receive an input beam made up of light having the first state, and may convert the input beam into at least a first diffracted beam at a first diffraction angle such that the first diffracted beam is directed toward the second surface, is reflected by the second surface toward the third surface via total internal reflection, and is reflected by the third surface in a direction substantially parallel to the first surface.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: January 26, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Jahja Trisnadi, Pierre St. Hilaire, Hui-Chuan Cheng, Clinton Carlisle, Michael Anthony Klug, Kevin Richard Curtis
  • Patent number: 10895689
    Abstract: Structures for a waveguide and methods of fabricating a structure for a waveguide. A grating coupler is formed that has an arrangement of grating structures. A conformal layer is arranged over the plurality of grating structures. The conformal layer is composed of a tunable material having a refractive index that changes with an applied voltage.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: January 19, 2021
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob
  • Patent number: 10877203
    Abstract: A light guide plate, a method for fabricating the same, a backlight module, and a display panel are disclosed. The light guide plate includes a flexible base layer, a photonic crystal array layer on the flexible base layer, and a transparent planarization layer encapsulating the photonic crystal array layer. The photonic crystal array layer includes photonic crystals which are arranged in an array.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: December 29, 2020
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaonan Dong, Zhonghao Huang, Yongliang Zhao
  • Patent number: 10845526
    Abstract: A pupil replication waveguide for a projector display includes a slab of transparent material for propagating display light in the slab via total internal reflection. A diffraction grating is supported by the slab. The diffraction grating includes a plurality of slanted fringes in a substrate for out-coupling the display light from the slab by diffraction into a blazed diffraction order. A greater portion of the display light is out-coupled into the blazed diffraction order, and a smaller portion of the display light is out-coupled into a non-blazed diffraction order. A refractive index contrast profile of the diffraction grating along a thickness direction of the diffraction grating is symmetrical, and a refractive index contrast is larger at a middle than at both sides of the refractive index contrast profile, whereby the portion of the display light out-coupled into the non-blazed diffraction order is decreased.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: November 24, 2020
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Hee Yoon Lee, Ningfeng Huang, Pasi Saarikko, Yu Shi, Giuseppe Calafiore, Nihar Ranjan Mohanty
  • Patent number: 10838248
    Abstract: An optical film includes a first diffraction layer, a second diffraction layer, and a cover layer. The first diffraction layer includes a plurality of first diffraction gratings arranged in a direction on a surface thereof. The second diffraction layer is filled in the gap of the first diffraction gratings of the first diffraction layer and forms a plurality of second diffraction gratings arranged in a direction on the first diffraction layer, wherein the directions of the first diffraction gratings and the second diffraction gratings are parallel to each other. The cover layer fills and planarizes the second diffraction gratings of the second diffraction layer. The optical film can reduce the light leakage defect of a conventional liquid crystal display in a wide viewing angle and make the liquid crystal display have a uniform dark-state image and color image quality.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: November 17, 2020
    Assignee: BenQ Materials Corporation
    Inventors: Chen-Kuan Kuo, Cyun-Tai Hong, Meng-Chieh Chou, Chuen-Nan Shen, Meng-Jie Lin, Chia-Feng Lin, Fung-Hsu Wu, Meng-Chia Cheng
  • Patent number: 10818499
    Abstract: An optical grating component may include a substrate, and an optical grating, the optical grating being disposed on the substrate. The optical grating may include a plurality of angled structures, disposed at a non-zero angle of inclination with respect to a perpendicular to a plane of the substrate, wherein the plurality of angled structures are arranged to define a variable depth along a first direction, the first direction being parallel to the plane of the substrate.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: October 27, 2020
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: John Hautala, Morgan Evans, Rutger Meyer Timmerman Thijssen, Joseph C. Olson
  • Patent number: 10795174
    Abstract: Narrow bandpass filters are useful in numerous practical applications including laser systems, imaging, telecommunications, and astronomy. Traditionally implemented with thin-film stacks, there exists alternate means incorporating photonic resonance effects. Accordingly, here we disclose a new approach to bandpass filters that engages the guided-mode resonance effect working in conjunction with a cavity-based Fabry-Pérot resonance to flatten and steepen the pass band. Both of these resonance mechanisms are native to simple resonant bandpass filters placed in a cascade. To support the disclosure, numerical examples provide quantitative spectral characteristics including pass-band shape and sideband levels. Thus, we compare the spectra of single-layer 1D- and 2D-patterned resonant gratings with a dual-grating cascade design incorporating mathematically identical gratings. Dual and triple cascade designs are measured against a classic multi-cavity thin-film filter with 151 layers.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: October 6, 2020
    Inventors: Robert Magnusson, Yeong Hwan Ko
  • Patent number: 10789329
    Abstract: Systems, devices, articles, methods, and techniques for advancing quantum computing by removing unwanted interactions in one or more quantum processor. One approach includes creating an updated plurality of programmable parameters based at least in part on a received value for the characteristic magnetic susceptibility of the qubit in the at least one quantum processor, and returning the updated plurality of programmable parameters. Examples programmable parameters include local biases, and coupling values characterizing the problem Hamilton.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: September 29, 2020
    Assignee: D-WAVE SYSTEMS INC.
    Inventor: Trevor Michael Lanting
  • Patent number: 10775237
    Abstract: Disclosed is a resonant wavelength measurement apparatus, including a light source and a measurement unit. The measurement unit has a guided-mode resonance filter and a photosensitive element. The guided-mode resonance filter has a plurality of resonant areas, and each resonant area has a different filtering characteristic, to receive first light in the light source transmitted by a sensor or receive second light in the light source reflected by the sensor. The first light has a first corresponding pixel on the photosensitive element, the second light has a second corresponding pixel on the photosensitive element, and the first corresponding pixel and the second corresponding pixel correspond to a same resonant wavelength.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: September 15, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Cheng-Sheng Huang, Chih-Wei Chang, Shi-Ting Chen
  • Patent number: 10775303
    Abstract: A biological signal analyzing device configured to generate a first detection image or a second detection image is provided. The biological signal analyzing device includes a light-incident surface, a light-emitting surface and a plurality of optical-resonance structures. The sample is placed near the light incident surface, and receives a first light through the sample. The light resonance structures are configured to process the first light and generate a second and third light. The second light emits from the light emitting surface, and adapted to form the first detection image corresponding to the sample, and the third light emits from the light incident surface, and adapted to form the second detection image corresponding to the sample. The optical resonance structures vary their thickness along the first direction or vary the width along the second direction. A biological sensing apparatus, a sensing method and a fabrication method are also provided.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 15, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Cheng-Sheng Huang, Chan-Te Hsiung, Yen-Chieh Wang
  • Patent number: 10768361
    Abstract: A monitoring system monitors changes in an index of refraction of the grating over a time interval that includes the period of time. The monitoring system includes a light source assembly, a probing assembly, a power meter (e.g., a diffraction and/or a transmittance power meter), and a controller. The light source assembly emits a probe beam. The scanning assembly scans the probe beam over an area of the grating. The power meter measures power of a portion of the probe beam that interacts (e.g., is transmitted by or diffracted from) with the area of the grating. The controller determines changes in grating parameters (may be as a function of time) for the grating being formed based in part on measured power readings over the time interval.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: September 8, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Matthieu Charles Raoul Leibovici, Kavous Jorabchi, Austin Lane
  • Patent number: 10761261
    Abstract: A clamping device (300) for a light guide (112) is provided. The clamping device (300) includes a carrier structure having a first securing element (301) for securing the light guide (112) in a first position (401), and a second securing element (302) at a distance from the first securing element (301) for securing the light guide (112) in a second position (402), wherein the first and second positions (401, 402) have a first distance (403) in a longitudinal extension of the light guide (112). Further, an intermediate carrier (500) having a first surface (503) on which the first and second securing elements (301, 302) are attached in respective securing positions (501, 502), and an opposing second surface (504), which can be applied to a measurement object, is provided. Hereby, a second distance (505) of the securing positions (501, 502) of the securing elements (301, 302) on the intermediate carrier (500) is greater than the first distance (403) in a longitudinal direction of the light guide (112).
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: September 1, 2020
    Assignee: fos4X GmbH
    Inventors: Mathias Müller, Fabian Zelenka
  • Patent number: 10753908
    Abstract: Provided herein is a resonator for force detection. The resonator comprises a stack of: a cavity containing a cavity medium having a first refractive index; a first diffraction grating having a grating period; and a first covering medium having a second refractive index. Once a resonating condition is satisfied, the cavity allows a plurality of propagating modes for the beam in the cavity and only one propagating mode for the beam outside the cavity. The plurality of propagating modes in the cavity resonates to generate different resonance peaks corresponding different sensitivity levels. By working in different regimes, the resonator is able to provide high sensitivity and large dynamic range for force detection.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: August 25, 2020
    Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventor: Michael Somekh
  • Patent number: 10738987
    Abstract: A light emitting device includes a semiconductor light emitting element to emit an excitation light, a wavelength converting member to emit fluorescent light upon being irradiated with the excitation light, a package supporting the semiconductor light emitting element and the wavelength converting member, and a first photodetector configured to detect the excitation light and a second photodetector to detect the fluorescent light, located in the package.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: August 11, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Wataru Kuribayashi, Takashi Miyoshi, Naoto Morizumi
  • Patent number: 10732483
    Abstract: A photonic radiator device forming a photonic phased array antenna includes a light waveguide including a waveguide clad and a waveguide core using a semiconductor material, and a grating periodically formed an upper or lower part of the light waveguide. The photonic radiator device receives an input light wave in a direction of the grating and the light waveguide and radiates an output light wave to a space by using scattering from the grating.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 4, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyo Hoon Park, Jong Hun Kim, Sun Kyu Han, Ji Hwan Park
  • Patent number: 10719775
    Abstract: Described herein are structures and techniques for highly-connected qubit interaction using a “paramagnetic tree coupling” scheme. In one embodiment, a structure for providing highly-connected qubit interaction includes a plurality of qubits and, for each of the plurality of qubits, a paramagnetic medium connecting the qubit to each other one of the plurality of qubits, where the paramagnetic medium includes a series of inductive couplers.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: July 21, 2020
    Assignee: Massachusetts Institute of Technology
    Inventor: Andrew J. Kerman
  • Patent number: 10718906
    Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical device having a multiplexer and/or demultiplexer with an input and/or output optical waveguide including one or more waveguide segments tapered according to a non-linear function such as a curve. In embodiments, the one or more waveguide segments is tapered according to, e.g., a quadratic function, a parabolic function, or an exponential function. In accordance with some embodiments, the tapered segment assists in spatially dispersing the propagating light along a substantially uniform phase wavefront at a mirror that includes an echelle grating surface that is shaped to receive/reflect the light at the substantially uniform phase wavefront. In embodiments, the one or more waveguide segments is tapered according to a curve to receive a portion of light from the substantially uniform phase wavefront at the echelle grating surface. Additional embodiments may be described and claimed.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: July 21, 2020
    Assignee: Intel Corporation
    Inventor: Wenhua Lin
  • Patent number: 10684145
    Abstract: A sensor patch (110) is provided that includes a light guide (112) having a sensor element (111). Further, the sensor patch (110) includes a carrier structure having a first fastening element (301) for fastening the light guide (112) at a first position (401), and a second fastening element (302) that is spaced apart from the first fastening element (302) for fastening the light guide at a second position (402), wherein the sensor element (111) is arranged between the first position (401) and the second position (402), an intermediate carrier (500) having a first surface (503), on which the first and second fastening elements (301, 302) are mounted at respective fastening positions (501 502), and an opposing second surface (504) that can be mounted on a measurement object, and a covering element (303) arranged on the intermediate carrier (500) and connected thereto.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: June 16, 2020
    Assignee: FOS4X GMBH
    Inventors: Mathias Müller, Fabian Zelenka
  • Patent number: 10663734
    Abstract: A wearable image display system includes a headpiece, a first and a second light engine, and a first and a second optical component. The first and second light engines generate a first and a second set of beams respectively, each beam substantially collimated so that the first and second set form a first and a second virtual image respectively. Each optical component is located to project an image onto a first and a second eye of a wearer respectively. The first and second sets of beams are directed to incoupling structures of the first and second optical components respectively. Exit structures of the first and second optical components guide the first and second sets of beams onto the first and second eyes respectively. The optical components are located between the light engines and the eyes. Both of the light engines are mounted to a central portion of the headpiece.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: May 26, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Tapani Levola, Pasi Saarikko, Steven John Robbins, Yarn Chee Poon, Lena Adele Wolfe, Erica Lee Towle
  • Patent number: 10655947
    Abstract: The present disclosure provides a thickness measuring method and device. The thickness measuring method is used for measuring a thickness of a layer to be measured of a light-transmitting sample to be measured and comprising the steps of: placing the sample to be measured between an optical device and a metal layer, the optical device comprising a light incident surface and a light exit surface; adjusting incident light emitted to the light incident surface of the optical device so that an intensity of light exiting the light exit surface of the optical device is less than 10?12 W/m2, so as to obtain optical parameters of the incident light; and calculating a thickness of the layer to be measured according to the optical parameters of the incident light.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: May 19, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuefei Sun, Chienhung Liu, Zhengliang Li, Bin Zhang
  • Patent number: 10642125
    Abstract: Structures providing optical beam steering and methods of fabricating such structures. A first grating coupler has a first plurality of grating structures spaced with a first pitch along a first axis. A second grating coupler has a second plurality of grating structures spaced with a second pitch along a second axis. An optical switch is coupled to the first grating coupler and to the second grating coupler. The optical switch is configured to select between the first grating coupler and the second grating coupler for optical signal routing. The second axis of the second grating coupler is aligned nonparallel to the first axis of the first grating coupler.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 5, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: John J. Ellis-Monaghan, Steven M. Shank, Vibhor Jain, Anthony K. Stamper, John J. Pekarik
  • Patent number: 10641966
    Abstract: A free space coupling system comprising a waveguide horizontally positioned on an integrated circuit, and a silicon housing coupled to the waveguide, wherein the silicon housing comprises a reflective surface, a first port, wherein the first port is configured to receive light from an optic source positioned substantially parallel to the waveguide at a coupling point, and a second port, wherein the second port is oriented at about ninety degrees with respect to the first port, and wherein the second port is aligned with a grating port on the waveguide.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: May 5, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Rongsheng Miao, Zongrong Liu, Qianfan Xu, Xiao Shen
  • Patent number: 10620445
    Abstract: An optical wavelength dispersion device and manufacturing method therefor are disclosed, which the optical wavelength dispersion device includes a waveguide unit and a reflector, wherein the waveguide unit has a first substrate, an input unit, a grating and a second substrate. The input unit is formed on the first substrate and having a slit for receiving an optical signal, a grating is formed on the first substrate for producing an output beam once the optical signal is dispersed, the second substrate is located on the input unit and the grating, and forms a waveguide space with the first substrate, the reflector is located outside of the waveguide unit, and is used for change emitting angle of the output beam.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: April 14, 2020
    Inventor: Cheng-Hao Ko