Grating Patents (Class 385/37)
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Patent number: 12366748Abstract: An optical waveguide for a head up display is disclosed. The optical waveguide is configured to provide pupil expansion in two dimensions and having an input end and an output end and a first axis substantially parallel to the direction of propagation of light in the waveguide and substantially parallel with a direction from the input end to the output end. The optical waveguide comprising: an input region at the input end; a beam splitter configured to expand light received from the input region; a symmetrical diffraction grating comprising complementary first and second grating portions, wherein the second grating portion is substantially symmetrical to the first grating portion along a line of symmetry that is substantially parallel to the first axis. Light received at the symmetrical diffraction grating from the beam splitter is configured to be diffracted by the symmetrical diffraction grating towards the line of symmetry by the first grating portion or the second grating portion.Type: GrantFiled: August 20, 2020Date of Patent: July 22, 2025Assignee: Snap Inc.Inventor: Stephen Mason
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Patent number: 12366754Abstract: A display apparatus (500) for displaying a virtual image (VIMG1) comprises: an optical engine (ENG1) to form input light (IN1), which represents an input image (IMG0), an expander device (EPE1) to form light beams (B3P0,R,B3P1,R) of output light (OUT1) by expanding light beams (B0P0,R,B0P1,R) of the input light (IN1), the expander device (EPE1) comprising: a waveguide plate (SUB1), a diffractive in-coupling element (DOE1) to form first guided light (B1a) and second guided light (B1b) by coupling input light (IN1) into the waveguide plate (SUB1), wherein the display apparatus (500) comprises a base (BASE1) and an actuating mechanism (MOTOR1) to cause rotary motion of the expander device (500) with respect to the base (BASE1), wherein an angle (?1) between an optical axis (AX0) of the optical engine (ENG1) and the axis (AX1) of rotation of the expander device (500) is in the range of 10° to 45°.Type: GrantFiled: August 25, 2022Date of Patent: July 22, 2025Assignee: Shenzhen Optiave Display Technology Co., Ltd.Inventors: Yisheng Zhu, Houqiang Jiang, Tapani Kalervo Levola
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Patent number: 12360305Abstract: This document discloses a solution for an optical waveguide for an augmented reality display device. According to an aspect, the optical waveguide comprises: a substrate arranged to guide an optical image inside the substrate from an inlet to an outlet of the optical waveguide via a plurality of reflections; a surface relief grating at the inlet or the outlet of the optical waveguide, the surface relief grating guiding the image in the optical waveguide via diffraction and comprising a plurality of grooves; a coating disposed on the surface relief grating and filling at least partially at least one groove disposed at an edge of the surface relief grating where the image is coincident with the at least one groove after a first reflection of the image inside the substrate, the coating having optical characteristics convergent with optical characteristics of the substrate.Type: GrantFiled: September 20, 2021Date of Patent: July 15, 2025Assignee: DISPELIX OYInventor: Petri Stenberg
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Patent number: 12345933Abstract: An optical device includes a housing that accommodates at least an optical waveguide element, a main body portion 1 of the housing having an opening portion OP on one surface and a lead pin PN1 fixed to a side surface adjacent to the one surface, and including a metal member 2 disposed to surround the opening portion OP and a lid member 11 that closes the opening portion OP and is joined to the metal member 2, in which end portions of the metal member 2 and the lid member 11 along the side surface of the main body portion 1 at which the lead pin PN1 is disposed are located on an inner side of the main body portion 1 than the side surface of the main body portion 1.Type: GrantFiled: March 27, 2023Date of Patent: July 1, 2025Assignee: SUMITOMO OSAKA CEMENT CO., LTD.Inventors: Kei Kato, Hideki Ichimei
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Patent number: 12332459Abstract: The disclosure relates to augmented reality devices and methods for operating such devices. A waveguide with a diffractive optical elements-based architecture for an augmented reality device is provided. The waveguide includes a light in-coupling zone, a light expanding zone, and a light out-coupling zone. Each zone includes its own set of diffractive optical elements performing the light in-couple, light expand and light out-couple function. There are further provided an augmented reality display device and augmented reality glasses based on the waveguide with the diffractive optical elements-based architecture.Type: GrantFiled: August 8, 2022Date of Patent: June 17, 2025Assignee: Samsung Electronics Co., Ltd.Inventors: Vladimir Nikolaevich Borisov, Aleksandr Evgenyevich Angervaks, Nikolay Viktorovich Muravev, Roman Aleksandrovich Okun, Gavril Nikolaevich Vostrikov, Mikhail Vyacheslavovich Popov
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Patent number: 12321007Abstract: Method of laser modifying an optical fibre to form a modified region at a target location within the fibre, comprising positioning at least a portion of an optical fibre in a laser system for modification by a laser, applying a correction to an active optical element of the laser system to modify wavefront properties of the laser to counteract an effect of aberration on laser focus, and laser modifying the optical fibre at the target location using the laser with the corrected wavefront properties to produce the modified region.Type: GrantFiled: September 20, 2022Date of Patent: June 3, 2025Assignee: OXFORD UNIVERSITY INNOVATION LIMITEDInventors: Julian Fells, Martin Booth, Patrick Salter
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Patent number: 12313885Abstract: A structure for coupling an optical signal between an integrated circuit photonic structure and an external optical fiber is disclosed as in a method of formation. The coupling structure is sloped relative to a horizontal surface of the photonic structure such that light entering or leaving the photonic structure is substantially normal to its upper surface.Type: GrantFiled: June 16, 2023Date of Patent: May 27, 2025Assignee: Micron Technology, Inc.Inventor: Harel Frish
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Patent number: 12300680Abstract: Memory devices having optical I/O interfaces are described herein. In one embodiment, a memory device includes a plurality of memories coupled to a substrate, each memory including one or more photon integrated circuit (PIC) chips for converting electrical signals to/from optical signals. The memory device can further include a plurality of optical fibers, wherein individual ones of the memories are optically coupled to at least one of the optical fibers. The memories can receive/transmit the optical signals over the optical fibers and can be electrically coupled to a power supply/ground via the substrate.Type: GrantFiled: May 3, 2021Date of Patent: May 13, 2025Assignee: Micron Technology, Inc.Inventor: Omar J. Bchir
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Patent number: 12298551Abstract: Disclosed herein are techniques for waveguide displays. According to some embodiments, a method for fabricating a multi-layer optical device comprising includes measuring thickness variations within a target area of a first substrate for fabricating a first optical element of the multi-layer optical device and determining, based on the measuring, a thickness correction map indicating amounts of material to be removed in different regions of the target area to planarize the target area. The method also includes planarizing the target area of the first substrate based on the thickness correction map and bonding the first substrate to a second substrate that comprises a second optical element fabricated thereon to form a layer stack, wherein the target area of the first substrate aligns with and is bonded to the second optical element to form a multi-layer structure. The method further includes singulating the multi-layer structure from the layer stack.Type: GrantFiled: June 1, 2022Date of Patent: May 13, 2025Assignee: Meta Platforms Technologies, LLCInventors: Richard Farrell, Siddharth Buddhiraju, Jilin Yang, Pasqual Rivera, Anneli Munkholm, Keith Rozenburg
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Patent number: 12282163Abstract: An optical waveguide system and an electronic device are disclosed. The system comprises: a waveguide; an input coupler coupling a light into the waveguide; and an output coupler, wherein the input coupler includes a right portion and a left portion, wherein the right portion includes stacked first and second polarization volume gratings, the left portion includes stacked third and fourth polarization volume gratings. The first and fourth polarization volume gratings are polarization volume gratings optimized for a right-hand-side field of view of the light, and the third and second polarization volume gratings are polarization volume gratings optimized for a left-hand-side field of view of the light.Type: GrantFiled: December 30, 2021Date of Patent: April 22, 2025Assignee: Goertek Inc.Inventor: Lingshan Li
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Patent number: 12266279Abstract: Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a device includes: an optical guiding device configured to guide light to propagate along a first direction within the optical guiding device, an in-coupling diffractive structure configured to diffract the light to propagate in the optical guiding device, and one or more out-coupling diffractive structures arranged downstream the in-coupling diffractive structure along the first direction and configured to diffract at least part of the light out of the optical guiding device along a second, different direction. The in-coupling diffractive structure is configured to cause a first optical dispersion for the light, and at least one out-coupling diffractive structure is configured to cause a second optical dispersion for the light.Type: GrantFiled: October 3, 2024Date of Patent: April 1, 2025Assignee: Pacific Light & Hologram, Inc.Inventors: Jonathan Seamus Blackley, Richard Bahr, Watson Brent Boyett, Sylvain Marcel Colin, Robin James Green, Isaac Serrano Guasch, Stephen John Hart, Robert Alan Hess, Margaret H. Hsu, Christoph Von Jutrzenka, DeaGyu Kim, Mark Anthony Loya, Kelly Swan MacNeill, Benjamin Francis Neil, Kamran Qaderi, Tina Qin, Jesus Manuel Caridad Ramirez, Jayakrishna Sashidharan, Asher Zelig Sefami, Jeff Smith, Robert David Srinivasiah, Sameer Sudhir Walavalkar, Joshua D. Wiensch, Daniel Dereck Williamson
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Patent number: 12259552Abstract: A head-mounted display (HMD) system including a lens element supported by a support structure, the lens element having a waveguide with an incoupler configured to receive light from an optical scanner of the HMD. The incoupler is configured with multiple features varying in at least one of height, spacing, angle, or density. The features may be separated into discrete zones along the incoupler such that at least one of height, spacing, angle, or density of the plurality of features is varied over the incoupler and constant within a given zone or the features may be varied continuously across the incoupler.Type: GrantFiled: December 16, 2021Date of Patent: March 25, 2025Assignee: GOOGLE LLCInventors: Daniel Adema, Timothy Paul Bodiya, Shreyas Potnis
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Patent number: 12259686Abstract: The present invention features new waveguide layouts for input, redirection (expansion), and output holograms that minimize cross talk between colors and allow all three colors to reside in a single waveguide. The use of multiple incoupling holograms that diffract different colors of light in different directions, or along different paths, through a waveguide substrate advantageously provides for a reduction of cross-talk between the colors of a holographic image. In a square-shaped design, red, green, and blue input and output holograms approximately overlay on top of each other. The green redirection hologram is laterally separated from the red and blue redirection holograms. Using this square-shape design, the light beams for the three colors are separated into two paths propagating from input to output holograms.Type: GrantFiled: May 21, 2021Date of Patent: March 25, 2025Assignee: Amazon Technologies, Inc.Inventors: Arkady Bablumyan, Chen Liang
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Patent number: 12243860Abstract: A package structure includes a photonic die, an electronic die and a gap filling layer. The photonic die includes a dielectric layer, a silicon layer, a reflector structure and a plurality of connection pads. The silicon layer is disposed on the dielectric layer, wherein the silicon layer includes a grating coupler having a plurality of first trench patterns with a first depth and a plurality of second trench patterns with a second depth, wherein the first depth is different than the second depth. The reflector structure is embedded in the dielectric layer below the grating coupler. The connection pads are disposed over the dielectric layer. The electronic die is disposed on the photonic die, wherein the electronic die includes a plurality of bonding pads bonded to the connection pads of the photonic die. The gap filling layer is disposed on the photonic die and surrounding the electronic die.Type: GrantFiled: February 16, 2022Date of Patent: March 4, 2025Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Feng-Wei Kuo, Chewn-Pu Jou
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Patent number: 12233577Abstract: A method for manufacturing a mould for nanoprinting and the associated mould, includes providing a substrate having a layer, and at least one ion implantation configured so as to obtain in the layer, at least one first non-implanted portion or portion having a first implantation, at least one second portion having a second implantation, and a third non-implanted portion distinct from the first portion. After implantation, the method includes etching the layer configured so as to have a different etching speed between at least the second portion and the third portion, so as to etch through the openings of an etching mask, a plurality of patterns of different heights being included in the layer.Type: GrantFiled: September 22, 2022Date of Patent: February 25, 2025Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Hubert Teyssedre, Nicolas Posseme, Stefan Landis
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Patent number: 12235496Abstract: A method of stabilizing a fiber Bragg grating (FBG) disposed in a thermomechanical housing included performing an initialization process including measuring a transmission ratio at a plurality of FBG temperatures between an initial and final temperature, determining a maximum transmission ratio, and changing the temperature of the FBG until the transmission ratio equals a target transmission ratio. The method also includes performing an operation process including (a) measuring the transmission ratio, (b) adjusting the FBG temperature to align the measured transmission ratio with the predetermined fraction of the maximum transmission ratio, and (c) iteratively performing (a) and (b).Type: GrantFiled: March 22, 2024Date of Patent: February 25, 2025Assignee: RAM Photonics Industrial, LLCInventor: John R. Marciante
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Patent number: 12224750Abstract: A logical qubit, a quantum processor, and a method of performing an operation on the logical qubit are discussed. The logical qubit includes first and second tunable couplers and a plurality of fixed couplers, with at least one fixed coupler providing four physical qubit interaction. The first and second tunable couplers and the fixed couplers enforce even parity in any connected qubits. The logical qubit has a plurality of physical qubits with qubits connected to the first tunable coupler and a first fixed coupler, qubits connected to the second tunable coupler and a second fixed coupler, and qubits connected between the first fixed coupler and the second fixed coupler. Each fixed coupler is connected to at least two physical qubits and at least two paths connect the first tunable coupler and the second tunable coupler, with one path communicating with a microwave line.Type: GrantFiled: August 9, 2022Date of Patent: February 11, 2025Assignee: 1372934 B.C. LTD.Inventors: Mohammad H. Amin, Richard G. Harris
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Patent number: 12216311Abstract: An eyepiece for an augmented reality display system. The eyepiece can include a waveguide substrate. The waveguide substrate can include an input coupler grating (ICG), an orthogonal pupil expander (OPE) grating, a spreader grating, and an exit pupil expander (EPE) grating. The ICG can couple at least one input light beam into at least a first guided light beam that propagates inside the waveguide substrate. The OPE grating can divide the first guided light beam into a plurality of parallel, spaced-apart light beams. The spreader grating can receive the light beams from the OPE grating and spread their distribution. The spreader grating can include diffractive features oriented at approximately 90° to diffractive features of the OPE grating. The EPE grating can re-direct the light beams from the first OPE grating and the first spreader grating such that they exit the waveguide substrate.Type: GrantFiled: July 7, 2023Date of Patent: February 4, 2025Assignee: Magic Leap, Inc.Inventors: Michael Anthony Klug, Robert Dale Tekolste, William Hudson Welch, Eric Browy, Victor Kai Liu, Samarth Bhargava
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Patent number: 12210153Abstract: Waveguides and waveguide displays having a layer for blocking non-image light (i.e. haze) that could otherwise reduce contrast and degrade color gamut and uniformity, while providing high transmission to external light are provided. Many waveguides and displays incorporate at least one light control layer applied to at least one external surface of a waveguide supporting at least one grating and overlapping at least a portion of the at least one grating, to divert or block scattered light from the set of gratings that might otherwise enter said eyebox.Type: GrantFiled: May 3, 2023Date of Patent: January 28, 2025Assignee: Digilens Inc.Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich
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Patent number: 12204140Abstract: A gain flattening filter includes a first optical fiber that has a core, a first cladding, and a second cladding and that has a uniform composition in a length direction; and a pair of second optical fibers fused to both ends of the first optical fiber. The first optical fiber has a first section in which a slanted refractive index grating is formed and a pair of second sections connecting both ends of the first section to the pair of second optical fibers. The first cladding contains a photosensitive material whose refractive index increases upon irradiation with light having a specific wavelength. In the core, a tensile stress remains in the first section. An average MFD of the second sections is larger than an average MFD of the second optical fibers and smaller than an average MFD of the first section.Type: GrantFiled: April 5, 2021Date of Patent: January 21, 2025Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD, SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.Inventors: Shigehiro Nagano, Takemi Hasegawa, Jun Kinugasa, Kazuaki Masui
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Patent number: 12204125Abstract: An optical filter device, system, and methods for improved optical rejection of high angle of incidence (AOI) light is disclosed. For example, an analyte detection system is provided that includes an excitation light source for illuminating an implantable sensor and an optical detector for collecting emission light from the implantable sensor. Further, the optical detector portion of the analyte detection system features an optical filter device including a surface-treated microchannel wherein the surface-treated microchannel serves to absorb, trap, and/or block high-AOI light. Further, a method of operation of the presently disclosed microchannel-based optical filter device including a surface-treated microchannel is provided with respect to the high optical rejection of high-AOI light.Type: GrantFiled: February 19, 2021Date of Patent: January 21, 2025Assignee: Profusa, Inc.Inventors: Benjamin Jacobson, Gregory Kintz
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Patent number: 12189356Abstract: According to an aspect, there is provided a method for monitoring quality of loose tube fiber optic cable during manufacture in a secondary coating line. Initially, a trained machine-learning algorithm for calculating expected values of one or more quality metrics of manufactured loose tube fiber optic cable based on values of the one or more production process parameters of the secondary coating line is maintained in a machine-learning database. A computing system monitors one or more values of the one or more production process parameters during miming of the secondary coating line and calculates, in real-time during the monitoring, one or more expected values of the one or more quality metrics using the trained machine-learning algorithm with the monitored values of the one or more production process parameters as input. The computing system outputs at least the one or more expected values of the one or more quality metrics to a user device.Type: GrantFiled: September 8, 2020Date of Patent: January 7, 2025Assignee: Maillefer Extrusion OyInventors: Samppa Orhanen, Mikko Lahti, Jussi Hanhirova, Janne Harjuhahto
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Patent number: 12189179Abstract: A vertical grating coupler is disclosed. The grating coupler includes a first waveguide having a first grating, a second waveguide having a second grating, and a dielectric layer positioned between the first waveguide and the second waveguide. The first grating includes a plurality of first grating ridges separated by a plurality first grating gaps, and the second grating includes a plurality of second grating ridges separated by a plurality second grating gaps. The first grating, the second grating, and the dielectric layer are located in a vertical overlap region between the first waveguide and the second waveguide. The first grating and the second grating have different grating periods, and each of the plurality of first grating gaps and second grating gaps are filled with the dielectric layer.Type: GrantFiled: May 24, 2022Date of Patent: January 7, 2025Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Tai-Chun Huang, Stefan Rusu
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Patent number: 12174514Abstract: An optoelectronic emitter with a phased array antenna on a photonic chip includes a power splitter, an array of phase shifters and elementary emitters, and an integrated control device. The integrated control device includes an interferometric focusing lens, the entrance and exit faces of which are curved and define a free propagation region with a homogeneous refractive index. Input waveguides are connected to the entrance face orthogonal thereto and have an effective index for the guided modes adapted such that the optical paths of the input waveguides are identical to each other.Type: GrantFiled: December 21, 2020Date of Patent: December 24, 2024Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Daivid Fowler, Sylvain Guerber
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Patent number: 12174413Abstract: Provided are an LPFG and an optical transmission system in which a mode conversion amount does not depend on a polarization state and an electric field distribution. The LPFG according to the present invention includes cavity rows (25-1 and 25-2) of cavities 15 periodically arranged in a core region 11 of the few-mode fiber 10 at a position away from a central axis z of the core region 11 in parallel with the central axis z. Each of the cavity rows (25-1 and 25-2) is located at a different position in a longitudinal direction of the few-mode fiber 10 (where the position in a z direction is different), and the cavity rows (25-1 and 25-2) are located at positions shifted by 90° on a cross section of the core region 11 with the center of the cross section of the core region 11 (the intersection of an x-axis and a y-axis) as an origin.Type: GrantFiled: September 9, 2020Date of Patent: December 24, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Ryota Imada, Yoko Yamashita, Takashi Matsui, Taiji Sakamoto, Nobutomo Hanzawa, Noriyuki Araki, Shinichi Aozasa, Yuto Sagae, Kazuhide Nakajima
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Patent number: 12153211Abstract: An optical display includes a waveguide comprising an input coupler, first expansion grating, second expansion grating, and output coupler. The input coupler is configured to couple image light from an image source. The first expansion grating is configured to receive the image light, expand the image light along a first axis and away from a first direction at a first angle of expansion, and direct the image light out of the first expansion grating in a second direction different than the first direction. The second expansion grating is configured to receive the image light, to expand the image light along the first axis and towards the first direction at a second angle of expansion, and direct the image light out of the first expansion grating in the second direction.Type: GrantFiled: June 27, 2022Date of Patent: November 26, 2024Assignee: Rockwell Collins, Inc.Inventors: Eric P. Stratton, Robert D. Brown
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Patent number: 12147045Abstract: Provided are: a light guide element in which deterioration in image sharpness can be prevented and the entire area of a display image can be suitably observed irrespective of the visual line of a user, the position of eyes of the user, and the like; and an image display apparatus including the light guide element. The light guide element includes: a light guide plate that includes a first light guide layer and a second light guide layer; and an incidence diffraction element and an emission diffraction element that are laminated on the second light guide layer, in which in a case where a refractive index of the first light guide layer is represented by n1 and a refractive index of the second light guide layer is represented by n2 in the light guide plate, n1<n2 is satisfied.Type: GrantFiled: June 24, 2022Date of Patent: November 19, 2024Assignee: FUJIFILM CorporationInventors: Hiroshi Sato, Katsumi Sasata, Yukito Saitoh
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Patent number: 12131225Abstract: A tunable coupler for making a controllable coupling to at least a first qubit is disclosed. The tunable coupler includes a first constant coupling element and a tunable coupling element. The first constant coupling element forms a non-galvanic coupling interface to at least the first qubit at a first extremity that is distant from the tunable coupling element. The tunable coupling element is located adjacent to a non-galvanic coupling interface formed as an interface to a circuit element at a second extremity thereof.Type: GrantFiled: March 8, 2021Date of Patent: October 29, 2024Assignee: IQM Finland OyInventors: Johannes Heinsoo, Caspar Ockeloen-Korppi
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Patent number: 12124002Abstract: Configurations for a beam deflector metasurface are disclosed. The beam deflector metasurface may include beam deflectors arranged in a repeating, radial pattern of concentric zones. The beam deflector metasurface may be a large area, high numerical aperture metasurface optic with high efficiency when directing light at non-normal angles of incidence. The different concentric zones may direct received light in varying directions with various steepness of angles. The beam deflectors may include pillars that may be the same or different width, height, or shape. The pillars may function as diffractive gratings and the cross-coupling between the pillars may direct the output light. The zones of the beam deflector metasurface may allow for diffusing hot spots and spreading the light evenly over the target area. The beam deflector metasurface may be used for non-imaging applications where the deterioration of focus allows for better efficiency at non-normal input and output angles of incidence.Type: GrantFiled: September 3, 2021Date of Patent: October 22, 2024Assignee: Apple Inc.Inventors: Daryl I. Vulis, Brandon J. Hui, Christian Ocier, Shang Wang, Tong Chen, Zhenbin Ge, Runyu Zhang
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Patent number: 12118951Abstract: A display system includes a display screen layer, a coupling region, an upper guide, a first coupler, a second coupler, and an optical element. The coupling region may be positioned along a sidewall of the display screen layer and may route a beam between the optical element and the upper guide and may route the beam between the first coupler and the second coupler. The first coupler may be positioned along a front surface of the upper guide and may couple a beam through the front surface of the upper guide. The second coupler may be positioned between the coupling region and the upper guide and may couple the beam between the coupling region and the upper guide. The optical element may be positioned below a back surface of the upper guide. A computing device with the display system is also disclosed.Type: GrantFiled: February 23, 2023Date of Patent: October 15, 2024Assignee: II-VI DELAWARE, INC.Inventors: Dmitri Iazikov, Anna Tatarczak, Julien Boucart, Young-Kai Chen
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Patent number: 12111511Abstract: Configurations and compositions for frameworks supporting optics such as lenses are described that provide an invariant structure regardless of temperature swings, thereby maintaining alignment and focus. Frameworks may comprise tiered structures of materials having multiple distinct coefficients of thermal expansion. An optical framework includes a first framework portion coupled to a first lens and a second framework portion coupled to a second lens. The first framework portion and second framework portion comprise materials having a coefficient of thermal expansion such that expansion of the first framework portion in one direction is offset by expansion of the second framework portion in an opposite direction.Type: GrantFiled: May 20, 2021Date of Patent: October 8, 2024Assignee: Applied Research Associates, Inc.Inventors: Joseph N. Paranto, Michael E. Meline, Devin M. J. Todd, Matthew Flint Kepler, Martin William Slack
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Patent number: 12111470Abstract: Provided are an optical system and a mixed reality device. The optical system includes a projection apparatus, a substrate layer and a diffraction grating layer. The projection apparatus is configured to project two beams of image light. The substrate layer has two side surfaces and two planes, where each of the two side surfaces is configured to receive a respective one of the two beams of the image light, and the two planes are configured to totally reflect each of the two beams of the image light entering the substrate layer. The diffraction grating layer is disposed on at least one plane of the substrate layer and is configured to diffract, in a reflective manner or a transmissive manner, the two beams of the image light propagating in the substrate layer, where energy of target image light diffracted out of the diffraction grating layer is uniformly distributed.Type: GrantFiled: December 21, 2021Date of Patent: October 8, 2024Assignee: NANCHANG TRIPOLE OPTOELECTRONICS CO., LTD.Inventors: Junqi Yuan, Yusheng Ma
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Patent number: 12105332Abstract: A light conversion portion includes a conversion material that converts infrared light to visible light. A reflection portion is fixed to a position on a main substrate at which the reflection portion faces an output end of an optical waveguide chip on the side from which light is output to an external space. The reflection portion includes a reflection surface that faces the output end and is inclined with respect to a plane of the main substrate such that a reflection direction is toward the upper side of the main substrate. The reflection surface reflects near infrared light.Type: GrantFiled: November 15, 2019Date of Patent: October 1, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Takuya Tanaka, Kota Shikama
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Patent number: 12105324Abstract: Disclosed are apparatuses for optical coupling and a system for communication. In one embodiment, an apparatus for optical coupling having an optical coupling region is disclosed. The apparatus for optical coupling includes a substrate and a core layer disposed on the substrate. The core layer includes a plurality of holes located in the optical coupling region. An effective refractive index of the core layer gradually decrease from a first end of the optical coupling region to a second end of the optical coupling region.Type: GrantFiled: July 28, 2023Date of Patent: October 1, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Feng-Wei Kuo, Chewn-Pu Jou
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Patent number: 12092940Abstract: An optical system includes a tunable laser that generates an optical signal at an output that is wavelength tunable. A wavelength router directs particular wavelength bands of the optical signal to particular ones of the plurality of outputs. An optical emitter emits an optical beam at an output, wherein tuning the tunable laser steers the emitted beam.Type: GrantFiled: May 11, 2022Date of Patent: September 17, 2024Inventor: Eric Swanson
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Patent number: 12072534Abstract: A coupling system includes an optical fiber configured to carry an optical signal. The coupling system further includes a chip in optical communication with the optical fiber. An angle between the optical fiber and a top surface of the chip ranges from about 92-degrees to about 88-degrees. The chip includes a grating configured to receive the optical signal; and a waveguide, wherein the grating is configured to receive the optical signal and redirect the optical signal along the waveguide. ms.Type: GrantFiled: August 27, 2021Date of Patent: August 27, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Sui-Ying Hsu, Yuehying Lee, Chien-Ying Wu, Chen-Hao Huang, Chien-Chang Lee, Chia-Ping Lai
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Patent number: 12055744Abstract: An optical assembly for optical aperture expansion combines facet reflective technology with diffractive technology. At least two diffractive components having opposite optical power (matching) are used, so that chromatic dispersion introduced by the first diffractive component will then be cancelled by the second diffractive component. The two diffractive components are used in combination with a reflective optical component to achieve more efficient aperture expansion (for near eye display), reducing distortions and noise, while also reducing design constraints on the system and individual components, as compared to conventional techniques. The assembly eliminates and/or reduces the need for polarization management, while enabling wider field of view. In addition, embodiments can have reduced nonuniformity, as compared to conventional single technology implementations, since the distortion patterns of the two technologies do not correlate.Type: GrantFiled: July 11, 2023Date of Patent: August 6, 2024Assignee: LUMUS LTD.Inventor: Yochay Danziger
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Patent number: 12013561Abstract: A waveguide apparatus comprises in combination: a light pipe with an optical axis for guiding light therethrough; a light coupling element in optical contact with an elongate portion of the reflecting surface of the light guide; and an optical waveguide in optical contact with the coupling element.Type: GrantFiled: November 8, 2021Date of Patent: June 18, 2024Assignee: DigiLens Inc.Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
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Patent number: 12001016Abstract: 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: GrantFiled: August 27, 2021Date of Patent: June 4, 2024Assignee: MAGIC LEAP, INC.Inventors: Lionel Ernest Edwin, Ivan Li Chuen Yeoh, Zhiheng Jia, Adam C. Carlson
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Patent number: 11940653Abstract: A diffraction optical waveguide is disclosed, which comprises a grating structure formed on a waveguide substrate. The grating structure comprises a plurality of optical unit structures arranged in an array along a plane; the optical unit structure has a first end and a second end in a first direction parallel to the plane, a distance between the two ends along the first direction is a length L of the optical unit structure; it has a maximum width W perpendicular to the first direction in a predetermined section along the first direction, where 0.3L?W?0.7L, and a central position of the predetermined section is at a predetermined distance d from the first end in the first direction, where d<0.5L; and a width gradually decreases from the predetermined section to both ends, so that a centroid of a cross-section of the optical unit structure is closer to the first end.Type: GrantFiled: May 11, 2023Date of Patent: March 26, 2024Assignee: JIAXING UPHOTON OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Zhentao Fan, Xingming Zhao, Kehan Tian
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Patent number: 11927819Abstract: Examples described herein relate to an optical device with an integrated light-emitting structure to generate light and a waveguide integrated capacitor to monitor light. The light-emitting structure may emit light upon the application of electricity to the optical device. The waveguide integrated capacitor may be formed under the light-emitting structure to monitor the light emitted by the light-emitting structure. The waveguide integrated capacitor includes a waveguide region carrying at least a portion of the light. The waveguide region includes one or more photon absorption sites causing the generation of free charge carriers relative to an intensity of the light confined in the waveguide region resulting in a change in the conductance of the waveguide region.Type: GrantFiled: November 10, 2021Date of Patent: March 12, 2024Assignee: Hewlett Packard Enterprise Development LPInventors: Sudharsanan Srinivasan, Di Liang
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Patent number: 11909173Abstract: A waveguide based wavelength-tunable laser formed on a semiconductor substrate includes a first reflector from which laser light is output, a second reflector configuring a laser resonator together with the first reflector, a gain portion that is provided between the first reflector and the second reflector, at least two wavelength filters that can adjust wavelength characteristics and adjust a wavelength of the laser light, and a phase adjuster that adjusts an optical path length in the laser resonator, and a waveguide is formed to fold back an optical path by an angle of substantially 180 degrees between the first reflector and the second reflector.Type: GrantFiled: August 4, 2020Date of Patent: February 20, 2024Assignee: FURUKAWA ELECTRIC CO., LTD.Inventor: Kazuaki Kiyota
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Patent number: 11899217Abstract: An AR glasses device includes a supporting portion, an optical-mechanical assembly, and an adjustment assembly comprising a first adjustment module and a second adjustment module. The optical-mechanical assembly comprises a first optical-mechanical module and a second optical-mechanical module arranged in a second direction. The first optical-mechanical module comprises a first waveguide sheet and a first fixing portion to drive the first waveguide sheet to rotate about the second direction. The second optical-mechanical module comprises a second fixing portion and a second waveguide sheet. The first adjustment module extends through the supporting portion in a first direction and connects the first fixing portion. An arc-shaped groove about the first direction penetrates the supporting portion in the first direction.Type: GrantFiled: April 20, 2023Date of Patent: February 13, 2024Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Yan Lv
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Patent number: 11892681Abstract: A coupling system includes an optical fiber configured to carry an optical signal. The coupling system further includes a chip in optical communication with the optical fiber. The chip includes a substrate. The chip further includes a grating on a first side of the substrate, wherein the grating is configured to receive the optical signal. The chip further includes an interconnect structure over the grating on the first side of the substrate, wherein the interconnect structure defines a cavity aligned with the grating. The chip further includes a first polysilicon layer on a second side of the substrate, wherein the second side of the substrate is opposite to the first side of the substrate.Type: GrantFiled: August 27, 2021Date of Patent: February 6, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chen-Hao Huang, Hau-Yan Lu, Sui-Ying Hsu, Yuehying Lee, Chien-Ying Wu, Chien-Chang Lee, Chia-Ping Lai
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Patent number: 11892745Abstract: With a wavelength conversion device based on a nonlinear optical effect, when arrayed waveguides including an intended nonlinear waveguide are fabricated, unwanted slab waveguides are inevitably formed. The slab waveguides can cause an erroneous measurement in the selection of a waveguide having desired characteristics from the arrayed waveguides. The erroneous measurement can lead to redoing steps for fabricating the wavelength conversion device and a decrease in the yield and inhibit the evaluation of the characteristics in selection of the waveguide and the subsequent fabrication of the wavelength conversion device from being efficiently performed. A wavelength conversion device according to the present invention includes a plurality of waveguides formed on a substrate, and a plurality of slab waveguides that are arranged substantially in parallel with and spaced apart from the plurality of waveguides, and each of the slab waveguides has a grating structure that reflects light of a particular wavelength.Type: GrantFiled: November 13, 2019Date of Patent: February 6, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takushi Kazama, Takahiro Kashiwazaki, Osamu Tadanaga, Koji Embutsu, Ryoichi Kasahara, Takeshi Umeki
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Patent number: 11885966Abstract: An optical system provides two-stage expansion of an input optical aperture for a display based on a light-guide optical element. A first expansion is achieved using two distinct sets of mutually-parallel partially-reflecting surfaces, each set handing a different part of an overall field-of-view presented to the eye. In some cases, a single image projector provides image illumination to two sets of facets that are integrated into the LOE. In other cases, two separate projectors deliver image illumination corresponding to two different parts of the field-of-view to their respective sets of facets.Type: GrantFiled: December 30, 2020Date of Patent: January 30, 2024Assignee: Lumus Ltd.Inventors: Eitan Ronen, Ronen Chriki, Tsion Eisenfeld
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Patent number: 11874145Abstract: An optical system performs a method for measuring an acoustic signal in a wellbore. The optical system includes a light source, an optical fiber and a detector. The light source generates a light pulse. The optical fiber has a first end for receiving the light pulse from the light source and a plurality of enhancement scatterers spaced along a length of the optical fiber for reflecting the light pulse. A longitudinal density of the enhancement scatterers increases with a distance from the first end to increase a signal enhancement generated by the enhancement scatterers distal from the first end. The detector is at the first end of the optical fiber and measures a reflection of the light pulse at the enhancement scatterers to determine the acoustic signal.Type: GrantFiled: July 28, 2021Date of Patent: January 16, 2024Assignee: BAKER HUGHES OILFIELD OPERATIONS LLCInventors: Paul Wysocki, Dan Provenzano, Zhao Li
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Patent number: 11868050Abstract: The present disclosure relates to systems and methods relating to the fabrication of light guide elements. An example system includes an optical component configured to direct light emitted by a light source to illuminate a photoresist material at one or more desired angles so as to expose an angled structure in the photoresist material. The photoresist material overlays at least a portion of a first surface of a substrate. The optical component includes a container containing a light-coupling material that is selected based in part on the one or more desired angles. The system also includes a reflective surface arranged to reflect at least a first portion of the emitted light to illuminate the photoresist material at the one or more desired angles.Type: GrantFiled: November 7, 2022Date of Patent: January 9, 2024Assignee: Waymo LLCInventors: James Dunphy, David Hutchison
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Patent number: 11837470Abstract: A method for fabricating a nano-structure includes: providing a phase mask having an uneven lattice structure to contact a photoresist film; exposing the photoresist film to a light through the phase mask such that the light is obliquely incident on a surface of the photoresist film; and developing the photoresist film to form a nano-structure.Type: GrantFiled: April 13, 2021Date of Patent: December 5, 2023Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jisun Lee, Seokwoo Jeon, Sanghyun Nam
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Patent number: 11822054Abstract: The present disclosure relates to a metasurface structural body or the like having a structure for achieving desired optical characteristics. The metasurface structural body includes a base member having a first surface and a second surface opposing each other, and a plurality of antennas as a plurality of fine structures arranged along the first surface. The base member has a base portion and an adjacent portion. The antennas each has a first refractive index and an antenna end surface constituting a part of the first surface. The adjacent portion is provided such that a part thereof is positioned between the antennas, the adjacent portion having a second refractive index different from the first refractive index and an adjacent-portion end surface constituting a remaining part of the first surface. The antenna end surfaces and the adjacent-portion end surface form a flat surface as the first surface.Type: GrantFiled: April 11, 2019Date of Patent: November 21, 2023Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Soh Uenoyama, Yuu Takiguchi