Polarizer Or Interference Filter Patents (Class 353/20)
  • Patent number: 11933465
    Abstract: A lighting device (10) for vehicle headlamps, comprising: —at least one light source (50), —a light guide (200) comprising an end section (210) with a light entry surface, —a light guide adapter (300) configured to secure the end section (210) and to hold the light entry surface in a position with regard to the light source (50), the light guide adapter (300) comprises a base-section (310) and a securing-section (320), and —a support frame (400), on which the light guide adapter (300) is mounted, wherein the securing-section (320) comprises a first engaging-element (320a), the base-section (310) comprises a first fastening-opening (311), the support frame (400) comprises a mounting-opening (410) for the securing-section (320) of the light guide adapter (300) and a second fastening-opening (411), wherein the mounting-opening (410) having a second engaging-element (410a) corresponding to the first engaging-element (320a), wherein the light guide adapter (300) can be brought into an end position (P2) by insertin
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: March 19, 2024
    Assignee: ZKW Group GmbH
    Inventor: Andrej Zubaj
  • Patent number: 11914273
    Abstract: An optical engine module configured to receive an illuminating beam is provided. The illuminating beam includes a first illuminating beam with a first linear polarization state. The optical engine module includes a first polarization beam splitting element, a first phase retardation element, and a first light valve. The first polarization beam splitting element is disposed on the transmission path of the illuminating beam and is configured to reflect the first illuminating beam to the first phase retardation element. The first phase retardation element is disposed on the transmission path of the first illuminating beam, and the first illuminating beam passes through the first phase retardation element and is transmitted to the first light valve. The first light valve is disposed on the transmission path of the first illuminating beam and is configured to convert the first illuminating beam into a first image beam.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventor: Ku-Hui Hsu
  • Patent number: 11917339
    Abstract: A light engine includes an image surface, a projected light surface, a projection lens assembly, and a plurality of folding elements. The image surface has three image areas. The projected light surface has three light sources that provide light with different wavelengths. The plurality of folding elements are arranged along a light emitting axis. The image surface and the projected light surface are substantially in parallel with the light emitting axis, and there is an air gap located between the image surface and the projected light surface. The three light sources respectively correspond to the plurality of folding elements and respectively correspond to the three image areas, and the light emitting axis and the projection lens assembly are disposed on the same optical path.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: February 27, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Yu Jie Hong, Chun-Che Hsueh, Fuh-Shyang Yang
  • Patent number: 11914143
    Abstract: An augmented reality device includes an image output unit disposed at a preset angle from a horizontal direction to output an augmented reality image of a preset polarization direction, a polarization reflection film reflecting light of the preset polarization direction and transmitting other light than the light of the preset polarization direction, and an optical component disposed on a light path of an image output from the image output unit. The optical component has a preset refractive index and a preset shape. The polarization reflection film is applied on a first surface of the optical component which is positioned farther away from the image output unit.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: February 27, 2024
    Inventors: Seonkyu Yoon, Sungkuk Chun, Kwanghoon Lee
  • Patent number: 11902494
    Abstract: Systems and methods for reducing the deleterious effects of specular reflections (e.g., glint) on active illumination systems are disclosed. An example system includes an illuminator or light source configured to illuminate a scene with electromagnetic radiation having a defined polarization orientation. The system also includes a receiver for receiving portions of the electromagnetic radiation reflected or scatter from the scene. Included in the receiver is a polarizer having a polarization axis crossed with the polarization orientation of the emitted electromagnetic radiation. By crossing the polarizer with the polarization of the emitted electromagnetic radiation, the polarizer may filter out glint or specular reflections in the electromagnetic radiation returned from the scene.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: February 13, 2024
    Assignee: nLIGHT, Inc.
    Inventors: Bodo Schmidt, Paul S. Banks, Charles Stewart Tuvey
  • Patent number: 11885994
    Abstract: A dichroic coating can be applied to a glass window of an electronic device to enhance the cosmetic and aesthetic appeal of the device. Different processes can be applied to the glass window in combination with a dichroic coating. For example, a layer of ink can be applied to the glass window in addition to one or more layers of dichroic material. The material layers can cover any suitable portion of the glass. For example, the material layers can include holes or openings. As another example, the material layers can be constructed from several distinct shapes placed on the glass. In some cases, software applications can be used to define a desired color profile for a coating, and to retrieve a suitable combination of dichroic and other layers to provide the desired color profile.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: January 30, 2024
    Assignee: APPLE INC.
    Inventors: Evans Hankey, Ron Moller, Jody Akana, Mike Pilliod, Michael Holmberg, Peter Russell-Clarke
  • Patent number: 11822223
    Abstract: A light source device according to the present disclosure includes a first light source section for emitting a first light flux, a second light source section for emitting a second light flux, a third light source section for emitting a third light flux, a first reflecting member, a second reflecting member for reflecting the second light flux, and a polarization combining element. With respect to the polarization combining element, the first light flux and the second light flux are light polarized in a first polarization direction, and the third light flux is light polarized in a second polarization direction, and the first and second reflecting members are disposed so that a distance between the first light flux and second light flux becomes smaller after incidence than before the incidence. The polarization combining element combines the first light flux, the second light flux, and the third light flux with each other.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: November 21, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Katsuyuki Uehara
  • Patent number: 11822112
    Abstract: An artifact mitigation system includes a projector assembly and a set of imaging optics optically coupled to the projector assembly. The artifact mitigation system also includes an eyepiece optically coupled to the set of imaging optics. The eyepiece includes a diffractive incoupling interface. The artifact mitigation system further includes an artifact prevention element disposed between the set of imaging optics and the eyepiece. The artifact prevention element includes a linear polarizer, a first quarter waveplate disposed adjacent the linear polarizer, and a color select component disposed adjacent the first quarter waveplate.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: November 21, 2023
    Assignee: Magic Leap, Inc.
    Inventors: Kevin Richard Curtis, Hui-Chuan Cheng, Paul M. Greco, William Hudson Welch, Eric C. Browy, Miller Harry Schuck, III, Bradley Jay Sissom
  • Patent number: 11754915
    Abstract: A light source apparatus includes light sources emitting first and second polarized light, an optical element transmitting one of the polarized light and reflecting the other, a polarization rotator generating polarization rotated light from the first polarized light, a wavelength convertor converting the second polarized light into wavelength converted light, and a controller. The optical element generates emitted light by combining the wavelength converted light and polarization rotated light. The controller acquires respective deterioration amounts of the light sources, and controls, based on respective changes in light emission amounts from the light sources acquired from the deterioration amounts, the light emission amount from at least one of the light sources for making different respective change amounts of the light emission amounts from the light sources, or changing a ratio between respective light emission amounts from the light sources.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: September 12, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuya Kurata, Hiroshi Yamamoto
  • Patent number: 11726396
    Abstract: A light source device includes: blue, green, and red laser light sources; a first retardation plate that controls polarization of blue laser light emitted from the blue laser light source; a polarizing beam splitter that separates the blue laser light whose polarization is controlled by the first retardation plate into a first blue laser light and a second laser light; a second retardation plate that controls polarization of the second blue laser light separated by the polarizing beam splitter; a fluorescent plate that is excited by the first blue laser light separated by the polarizing beam splitter and emits fluorescent light including a green component and a red component; a first dichroic mirror that combines the second blue laser light whose polarization is controlled by the second retardation plate and light emitted from the green and red laser light sources, to generate combined laser light; a dynamic diffuser plate that diffuses the combined laser light combined by the first dichroic mirror to generat
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: August 15, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Takaaki Tanaka
  • Patent number: 11719871
    Abstract: A polarizer includes a buffer member and linear metal patterns. The buffer member includes protrusions. Each protrusion has downwardly-increasing width. The buffer member is formed of polymer. The linear metal patterns, spaced apart from each other, are extended in a first direction. Each linear metal pattern covers a respective protrusion.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: August 8, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kang-Soo Han, Eun-Jung Kim, Gug-Rae Jo, Hyung-Bin Cho
  • Patent number: 11719950
    Abstract: An apparatus includes a display element, and an optical system configured to guide to an exit pupil the display light and external light. The optical system includes a first polarization separating element, a first optical unit, and a second optical unit that includes a half-transmissive reflective surface, a phase plate, and a second polarization separating element. The external light transmits through the first polarization separating element and the second optical unit toward the exit pupil. The display light transmits through the first polarization separating element, is reflected by the first optical unit and the first polarization separating element, is twice reflected by the second optical unit, and travels to the exit pupil. The display light forms an intermediate image in an optical path from the first optical unit to the second optical unit.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: August 8, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazutaka Inoguchi
  • Patent number: 11720012
    Abstract: An optical system of the present disclosure includes: a first optical system that includes a first optical element having a plurality of divided regions having mutually different polarization actions, the first optical element being disposed at a first pupil position in the optical system, and that generates illumination light including a plurality of color light beams in mutually different wavelength bands; a plurality of light valves that each modulates at least one color light beam of the plurality of color light beams included in the illumination light; and a second optical system that includes a second optical element having a plurality of divided regions having mutually different polarization actions, the second optical element being disposed at a second pupil position conjugate to the first pupil position, and on which the plurality of color light beams modulated by the plurality of light valves is incident.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: August 8, 2023
    Assignee: SONY GROUP CORPORATION
    Inventor: Toshifumi Yasui
  • Patent number: 11715392
    Abstract: A projection device comprises first light sources, an interference disk, a condensing lampshade, and a driving device. Both of the interference disk and the condensing lampshade are arranged on light paths of the first light sources. The condensing lampshade is arranged behind the interference disk, and the interference disk is made stationary relative to the first light sources. The driving device drives the condensing lampshade to rotate. When the driving device drives the condensing lampshade to rotate, the projection light emitted after sequentially passing through the interference disk and the condensing lampshade projects an effect of clouds moving. The light paths of the projection light emitted by the first light sources are relatively stable after passing through the interference disk and before entering the condensing lampshade.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: August 1, 2023
    Inventor: Lifang Liu
  • Patent number: 11693248
    Abstract: A display engine adapted for use in a head-mounted display (HMD) device includes a reflective liquid crystal on silicon (LCoS) spatial light modulator (SLM) that is illuminated using a backlight illumination module and a pair of optical prisms providing a total internal reflection (TIR) function. In an illustrative mixed-reality embodiment, the TIR prism pair guides light to the LCoS SLM from the backlight illumination module and projects virtual images reflected from the LCoS SLM, through projection optics, to a diffractive waveguide combiner for viewing by an HMD user.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: July 4, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Ishan Chatterjee, Dmitry Reshidko, Bernard Charles Kress
  • Patent number: 11671569
    Abstract: The invention provides a projection device including a first display, a second display, a third display, a light-combining module, a first angle selector, a second angle selector, a third angle selector, and a projection lens. The first display, the second display, and the third display are respectively adapted to provide a first image beam, a second image beam, and a third image beam. The projection lens is configured on one side of a light-outgoing surface of the light-combining module, and is adapted to project the first image beam, the second image beam, and the third image beam out of the projection device. The first image beam, the second image beam, and the third image beam respectively pass through the first angle selector, the second angle selector, and the third angle selector, and are then transmitted to the projection lens by the light-combining module.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: June 6, 2023
    Assignee: Coretronic Corporation
    Inventor: Yu-An Huang
  • Patent number: 11662598
    Abstract: Disclosed in the present invention is a beam coherence eliminating element. The optical medium material of the element comprises microcrystalline glass, wherein microcrystalline particles therein have a size of 0.1-1000 nm and are distributed randomly. As the crystals in the microcrystalline glass can change the phase of light beams, the microcrystalline glass can change the phase of the light beams randomly, thereby eliminating the coherence of the beams. The crystal size of the microcrystalline glass is small, and thus does not affect the transmission efficiency of light beams. The element of the present invention has a simple structure and is convenient to use, and can be added in the process of beam transmission to easily eliminate beam coherence.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: May 30, 2023
    Assignee: SHANGHAI FEIBO LASER TECHNOLOGIES CO., LTD.
    Inventors: Xiaojun Li, Wentao Li, Jie Wu
  • Patent number: 11640083
    Abstract: An improvement in contrast is achieved by suitably offsetting a phase difference produced by oblique light in a liquid-crystal panel. An optical compensation apparatus includes a negative C-plate and two O-plates, an amount of a composite phase difference between the two O-plates and the negative C-plate in a tilt-direction cross section is substantially same as an amount of a phase difference produced by light having each of incident angles in a predetermined incident-angle range in the liquid-crystal panel, and a sign of the composite phase difference is opposite to a sign of the phase difference, the tilt-direction cross section being a cross section parallel to a tilt direction of the liquid crystal in a vertical-alignment-type liquid-crystal panel.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 2, 2023
    Assignee: SONY CORPORATION
    Inventors: Ryoko Horikoshi, Keigo Inoue
  • Patent number: 11630380
    Abstract: A polarization control member includes a first dichroic mirror having a first incident face, a second dichroic mirror joined to the first dichroic mirror, the second dichroic mirror having a second incident face, and a waveplate joined to the first incident face of the first dichroic mirror.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: April 18, 2023
    Assignee: NICHIA CORPORATION
    Inventor: Soichiro Miura
  • Patent number: 11619872
    Abstract: A light source device according to the present disclosure includes a light source unit configured to emit a first light beam, a second light beam, and a third light beam, a first polarization split element configured to transmit the first light beam and the second light beam and reflect the third light beam, a second polarization split element configured to transmit the first light beam and reflect the second light beam, a first retardation element, a first diffusion element configured to diffuse the third light beam, a second diffusion element configured to diffuse the second light beam, and a third diffusion element configured to diffuse the first light beam. The first retardation element converts a polarization direction of the second light beam from the first polarization split element, and converts a polarization direction of the another part of the second light beam from the second polarization split element.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: April 4, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11586101
    Abstract: A system includes a red light emitting diode (LED), a blue LED, and a green LED. The system also includes a red laser, a first filter, a second filter, and a lens. The system includes a first optical path that includes the red LED, the red laser, the first filter, the second filter, and the lens, where the first filter has a filter response to transmit red light from the red laser and to reflect red light from the red LED. The system also includes a second optical path that includes the blue LED, the green LED, the second filter, and the lens, where the second filter has a filter response to transmit blue light from the blue LED, to transmit green light from the green LED, to reflect red light from the red laser, and to reflect red light from the red LED.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: February 21, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Gregory S. Pettitt, John M. Ferri
  • Patent number: 11579519
    Abstract: A light source device according to the present disclosure includes a first light source section for emitting a first light flux, a second light source section for emitting a second light flux, a third light source section for emitting a third light flux, a first reflecting member, a second reflecting member for reflecting the second light flux, and a polarization combining element. With respect to the polarization combining element, the first light flux and the second light flux are light polarized in a first polarization direction, and the third light flux is light polarized in a second polarization direction, and the first and second reflecting members are disposed so that a distance between the first light flux and second light flux becomes smaller after incidence than before the incidence. The polarization combining element combines the first light flux, the second light flux, and the third light flux with each other.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: February 14, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Katsuyuki Uehara
  • Patent number: 11539928
    Abstract: A light source module and a projection device are provided. The light source module is configured to provide a laser beam and includes multiple laser source units and a focusing lens. The laser source units include a first laser source unit, a second laser source unit, a third laser source unit and a fourth laser source unit respectively configured to provide a first laser beam, a second laser beam, a third laser beam and a fourth laser beam. The focusing lens is located on transmission paths of the first laser beam, the second laser beam, the third laser beam and the fourth laser beam. The first laser beam, the second laser beam, the third leaser beam and the fourth laser beam are respectively incident on the focusing lens along a first direction. The first laser source unit and the second laser source unit are arranged along a second direction.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: December 27, 2022
    Assignee: Coretronic Corporation
    Inventors: Chang-Hsuan Chen, Yen-Mo Yu
  • Patent number: 11531260
    Abstract: An illumination device includes a first light emitting element emitting first light in a first wavelength band, a wavelength conversion element converting a part of the first light into second light including a second wavelength band and a third wavelength band, diffusing another part of the first light, and emitting a result, a second light emitting element for emitting third light having the second wavelength band, a first optical element having a first area for reflecting the first light to enter the wavelength conversion element, reflecting fourth light having the second wavelength band out of the second light, and reflecting the third light, and a second area for transmitting the first light and the second light, and a second optical element for transmitting the first light to enter the first optical element, and reflecting the fourth light to enter the wavelength conversion element via the first area.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: December 20, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11531258
    Abstract: A light source module configured to provide a light beam along a first direction is provided. The light source module includes first to third light source groups and first to fourth beam-combining devices, wherein each of a light exiting surface of the first light source group and a light exiting surface of the third light source group is not parallel to a light exiting surface of the second light source group. An emitted light of the first light source group is transmitted along the first direction after being reflected by the first and second beam-combining devices. An emitted light of the third light source group is transmitted along the first direction after being reflected by the third and fourth beam-combining devices. An emitted light of the second light source group is transmitted along the first direction and passes through the first and third beam-combining devices.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: December 20, 2022
    Assignee: Coretronic Corporation
    Inventor: Jui Chang
  • Patent number: 11520022
    Abstract: Embodiments of the disclosure provide a liquid crystal on silicon (LCOS) light modulator, an optical sensing system, and an optical sensing method. The optical sensing system includes a transmitter configured to emit an optical signal toward an environment surrounding the optical sensing system, and a receiver configured to receive the optical signal returning from the environment. The receiver further includes the LCOS light modulator and a receiving lens. The LCOS light modulator is configured to spatially modulate a polarization of the optical signal in order to allow only a spatially-selected portion of the optical signal to pass through the LCOS light modulator at one time. The receiving lens is configured to focus the spatially-selected portion of the optical signal received from the LCOS light modulator on a photodetector of the receiver.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: December 6, 2022
    Assignee: BEIJING VOYAGER TECHNOLOGY CO., LTD.
    Inventors: Yue Lu, Youmin Wang
  • Patent number: 11520157
    Abstract: The present disclosure provides a polarization attenuator and a polarization attenuation method to solve the problem of polarization dependent loss of optical devices, or to be used in optical devices or systems as a polarizer structure. The polarization attenuator comprises a first main waveguide, an offset waveguide and a second main waveguide which are arranged in sequence, wherein an output surface of the first main waveguide partially overlaps an input surface of the offset waveguide; an output surface of the offset waveguide partially overlaps an input surface of the second main waveguide; the first main waveguide or the second main waveguide supports fundamental modes and supports at least one high order mode.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: December 6, 2022
    Assignee: QXP Technologies Inc.
    Inventor: Brent Everett Little
  • Patent number: 11523093
    Abstract: A light source apparatus includes a light source section that outputs first light, a first polarization separator that separates the first light in terms of polarization, a second polarization separator that reflects in the second direction a portion of the first light polarized in the first polarization direction and transmits the other portion of the first light polarized in the first polarization direction, a diffusion element that diffuses the first light incident from the first polarization separator, a first wavelength converter that converts in terms of wavelength the portion of the first light incident from the second polarization separator and emits second light, and a second wavelength converter that converts in terms of wavelength the other portion of the first light incident from the second polarization separator and emits third light.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: December 6, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11513430
    Abstract: A reflector includes a reflective film and a substrate, wherein the reflective film is attached to the substrate. Also, an optical system of an LCD (liquid crystal display) projector includes a first reflector, a second reflector, an LED (light emitting diode) light source, a condenser, a collimating lens, an LCD light valve, a field lens and a projection lens, wherein the LED light source, the condenser, the first reflector, the collimating lens, the LCD light valve, the field lens, the second reflector and the projection lens are set in sequence according to a direction of light. The reflector is significantly improved in the reflection efficiency while maintaining the low cost, or the reflector is significantly reduced in the manufacturing cost while achieving the high reflection efficiency, so that the output brightness and the photoelectric efficiency of the projector including the reflector with low cost, which has a very positive effect.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: November 29, 2022
    Assignee: NANHUA INTELLIGENT PRECISION MACHINE (SHENZHEN) CO., LTD.
    Inventor: Hanwen Guo
  • Patent number: 11506722
    Abstract: An illumination module for a test chamber, a test chamber and a method for modifying a test chamber. The test chamber includes a temperature-insulated test space sealable against an environment for receiving test material. The illumination module can be disposed at least partially in the test space to illuminate the test space and includes an illuminant and a socket, a wall duct and a light conducting device. The wall duct is disposed in a wall surrounding the test space and extends from an inner side to an outer side of the wall. The light conducting device has a light exit area and a light entry area and is disposed within the wall duct. The socket is disposed at the outer end positioning the illuminant at the light entry area. The light exit area is disposed at the inner end.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 22, 2022
    Assignee: WEISS TECHNIK GMBH
    Inventors: Matthias Emon, Christian Haack, Volker Schlosser, Dennis Reuschel, Ricardo Dietz
  • Patent number: 11503258
    Abstract: A light source module and a projection device are provided. The light source module is configured to provide a laser beam and includes multiple laser source units and a focusing lens. The laser source units include a first laser source unit and a second laser source unit, respectively configured to provide a first laser beam and a second laser beam. The focusing lens is located on transmission paths of the first laser beam and the second laser beam. The first laser beam and the second laser beam are respectively incident on the focusing lens along a first direction. The first laser source unit and the second laser source unit are arranged along a second direction.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: November 15, 2022
    Assignee: Coretronic Corporation
    Inventors: Chang-Hsuan Chen, Yen-Mo Yu
  • Patent number: 11480857
    Abstract: An adjustable optical module including a housing, an optical component and a cover component is provided. The housing has a positioning slot and an opening. The optical component is rotatably disposed on the positioning slot and includes an optical film and a carrying base for carrying the optical film. The carrying base includes an adjusting lever corresponding to the opening, and the adjusting lever is adapted to adjust an angle of the optical film. The cover component is fixed on the housing and covers the opening, and the cover component presses against the adjusting lever to fix the optical film. A projector having the adjustable optical module described above is also provided. The adjustable optical module and the projector of the invention can adjust the angle of the optical film through the above structures.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: October 25, 2022
    Assignee: Coretronic Corporation
    Inventors: Tung-Yi Ko, Hsiang-Hua Wang
  • Patent number: 11480862
    Abstract: A light source device includes a light source, a first polarization split element for transmitting first light from the light source which is polarized in a first polarization direction and reflecting the first light polarized in a second polarization direction, a first optical element for reflecting the first light from the first polarization split element, a diffusion element for diffusing the first light from the first polarization split element, a wavelength conversion element for performing wavelength conversion on the first light from the first optical element to emit second light, a second polarization split element which the second light enters from the first optical element, and which transmits the second light polarized in the first polarization direction and reflects the second light polarized in the second polarization direction, and a second optical element for reflecting the second light from the second polarization split element, polarized in the second polarization direction.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: October 25, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11474424
    Abstract: A light source device according to the present disclosure includes a light source section, a first polarization split layer for transmitting first light polarized in a first polarization direction and reflecting the first light polarized in a second polarization direction, a first optical layer and a second polarization split layer for transmitting the first light polarized in the first polarization direction, a second optical layer for reflecting the first light polarized in the first polarization direction, a diffusion element, a wavelength conversion element for performing wavelength conversion on the first light to emit second light, and a first color separation element.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: October 18, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11467477
    Abstract: Embodiments of the present disclosure provide a laser array, a laser source, and a laser projection device, and relate to the field of laser display technologies. The laser array includes a light emitting portion for emitting a laser light beam; a light transmitting portion disposed along a light emitting direction of the light emitting portion for transmitting the laser light beam; where the light transmitting portion includes a first light transmitting region and a second light transmitting region, the first light transmitting region and the second light transmitting region are disposed such that light beams transmitting through the two regions have different polarization directions, which can reduce coherence of the laser light beam emitted from the laser array, thereby facilitating elimination of a speckle.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: October 11, 2022
    Assignee: HISENSE LASER DISPLAY CO., LTD.
    Inventors: Youliang Tian, Wei Li, Zinan Zhou
  • Patent number: 11467481
    Abstract: A light source device according to the present disclosure includes a light source section for emitting first light, a first polarization split element for performing polarization split on the first light, a second polarization split element for reflecting the first light polarized in a first polarization direction and transmitting the first light polarized in a second polarization direction, a diffusion element for diffusing the first light from the first polarization split element, a wavelength conversion element for performing wavelength conversion on the first light entering the wavelength conversion element from the second polarization split element to emit second light, and an optical element having a flat-surface area and the concave-surface area.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: October 11, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11460704
    Abstract: Provided are an optical system for an augmented reality apparatus and an augmented reality apparatus. The optical system includes an image source; a polarizing beam splitter including a polarizing beam splitting film and a polarizing film; a polarizer disposed between the image source and the beam splitting side of the polarizing beam splitter; a wave plate adjacent to the beam splitting side; a semi-reflector located downstream of the wave plate in an optical path of the reflected light; and an additional wave plate and an additional polarizer which are sequentially located distal to the semi-reflector. The image source has a planar image source for emitting light, wherein a plane where the beam splitting side of the beam splitter component locates is at a first angle (?) relative to a normal of the image source, the first angle has a value between 11° and 79°.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: October 4, 2022
    Assignee: Matrixed Reality Technology Co., Ltd.
    Inventors: Bing Xiao, Xiaobin Liang, Chi Xu
  • Patent number: 11460764
    Abstract: A light source apparatus according to the present disclosure includes a first light source section that outputs first light, a second light source section that outputs second light, a first polarization separator that transmits the first light and the second light polarized in a first polarization direction and reflects the first light polarized in a second polarization direction, a second polarization separator that reflects the first light polarized in the first polarization direction, a first diffusion element that diffuses the first light incident from the first polarization separator, a wavelength converter that converts in terms of wavelength the first light and emits third light, and a second diffusion element that diffuses the second light incident from the second polarization separator.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: October 4, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11448970
    Abstract: A lithography exposure system includes a light source, a substrate stage, and a mask stage between the light source and the substrate stage along an optical path from the light source to the substrate stage. The lithography exposure system further comprises a reflector along the optical path. The reflector comprises: a first layer having a first material and a first thickness; a second layer having the first material and a second thickness different from the first thickness; and a third layer between the first layer and the second layer, and having a second material different from the first material.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: September 20, 2022
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Eng Hock Lee, Wen-Hao Cheng
  • Patent number: 11442355
    Abstract: A light source device according to the present disclosure includes a light source section, a first polarization split element for transmitting first light with a first polarization direction from the light source section and reflecting the first light with a second polarization direction, a second polarization split element for transmitting the first light with the first polarization direction from the first polarization split element, a reflecting element for reflecting the first light with the second polarization direction from the first polarization split element, an optical element for reflecting the first light with the second polarization direction from the reflecting element, a wavelength conversion element for performing wavelength conversion on the first light from the optical element to emit second light, and a diffusion element for diffusely emitting the first light from the second polarization split element.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: September 13, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11428859
    Abstract: An artifact mitigation system includes a projector assembly and a set of imaging optics optically coupled to the projector assembly. The artifact mitigation system also includes an eyepiece optically coupled to the set of imaging optics. The eyepiece includes a diffractive incoupling interface. The artifact mitigation system further includes an artifact prevention element disposed between the set of imaging optics and the eyepiece. The artifact prevention element includes a linear polarizer, a first quarter waveplate disposed adjacent the linear polarizer, and a color select component disposed adjacent the first quarter waveplate.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: August 30, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Kevin Curtis, Hui-Chuan Cheng, Paul M. Greco, William Hudson Welch, Eric C. Browy, Miller Schuck, Bradley Jay Sissom
  • Patent number: 11421984
    Abstract: The present invention relates to a method, and a corresponding device, for testing a radius of curvature and/or for detecting inhomogeneities of a curved X-ray grating for a grating-based X-ray imaging device. The method comprises generating a beam of light diverging from a source point, propagating along a main optical axis and having a line-shaped beam profile. The method comprises reflecting the beam off a concave reflective surface of the grating. A principal axis of the concave reflective surface coincides with the main optical axis and the source point is at a predetermined distance from a point where the main optical axis intersects the concave reflective surface.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: August 23, 2022
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Andriy Yaroshenko, Thomas Koehler, Hanns-Ingo Maack, Matthias Teders
  • Patent number: 11407310
    Abstract: A projector is disposed inside a seatback of a front seat as a vehicle seat; therefore, when a driver as an occupant seated in the front seat checks the rear side with a rearview mirror or the like, the projector can be restrained from entering the field of view of the driver. Accordingly, different from the case in which the projector is disposed on a ceiling of the vehicle cabin or the like and exposed into the vehicle cabin, it is possible to restrain the projector from blocking the field of view of the driver.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: August 9, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji Sato, Kei Yamamoto, Takashi Nishimoto
  • Patent number: 11366377
    Abstract: A wavelength conversion element according to the present disclosure includes a substrate, a reflecting layer, a wavelength conversion layer which is disposed on the reflecting layer, and which is configured to convert light in a first wavelength band into light in a second wavelength band, a structure which is disposed on the wavelength conversion layer, and which is configured to scatter the light in the first wavelength band, and an optical layer which is disposed on the structure, and which is configured to reflect a part of the light in the first wavelength band, transmit another part of the light in the first wavelength band, and transmit the light in the second wavelength band, wherein the optical layer is different in reflectance with respect to the light in the first wavelength band in accordance with an incidence angle of the light in the first wavelength band entering the optical layer.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: June 21, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Koya Shiratori, Mizuha Hiroki, Ryuta Koizumi, Tetsuo Shimizu
  • Patent number: 11356645
    Abstract: The invention provides a full color projection system (1000) comprising a lighting system (100) configured to provide first light (111) including blue light, second light (121) including one or more of green and yellow light, third light (131) including red light, wherein the first light (111), the second light (121), and the third light (131) include light having a wavelength of 430 nm or larger; a further light source (140) configured to provide further light source light (141) including one or more of UV light and short wavelength blue light having a wavelength of 420 nm or smaller, wherein the first light (111), second light (121), third light (131) and the further light source light (141) have mutually differing spectral power distributions; a spatial light modulator system (200) configured to receive the first light (111), the second light (121), the third light (131), and the further light source light (141), wherein the spatial light modulator system (200) is configured to provide a plurality of pixel
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: June 7, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet
  • Patent number: 11353783
    Abstract: An illumination device of the present disclosure includes: a first light source unit that emits first light of a first wavelength band; a first spatial light modulator where the first light from the first light source unit enters; a second light source unit that emits second light of a second wavelength band; an integrator optical system including a first fly-eye lens where the second light from the second light source unit enters and generating illumination light for an illumination target on a basis of the first light having been modulated by the first spatial light modulator and the second light from the second light source unit; and a multiplexing optical system that multiplexes the second light having entered the first fly-eye lens and the first light having been modulated by the first spatial light modulator, in an optical path between the first fly-eye lens and the illumination target.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: June 7, 2022
    Assignee: SONY CORPORATION
    Inventors: Masa Tanaka, Ryo Miyao
  • Patent number: 11347036
    Abstract: The present invention relates generally to stereoscopic displays, and more particularly, but not exclusively, to stereoscopic displays with addressable focus cues.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: May 31, 2022
    Assignee: THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventors: Hong Hua, Xinda Hu
  • Patent number: 11333962
    Abstract: A light source apparatus according to an aspect of the present disclosure includes a light source section, a first polarization separator that transmits a first polarization component of first light and reflects a second polarization component of the first light, a second polarization separator that reflects the first polarization component, transmits a third polarization component of second light, and reflects a fourth polarization component of the second light, a diffuser that diffuses the second polarization component and causes the diffused second polarization component, and a wavelength converter that converts the wavelength of the first polarization component and causes the second light. The first polarization separator includes a first polarization separation layer and first bases. The second polarization separator includes a second polarization separation layer and second bases. At least one of the first bases and the second bases is made of quartz.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: May 17, 2022
    Assignee: Seiko Epson Corporation
    Inventor: Koichi Akiyama
  • Patent number: 11333963
    Abstract: An illumination system and a projection device are provided. The illumination system includes a light source device, a light homogenizing element, and a polarization element. The light source device is configured to provide first, second, third, and first compensation beams. The light homogenizing element is disposed on transmission paths of the first, second, and third beams and the first compensation beam and is configured to convert the first, second, and third beams and the first compensation beam into an illumination beam. The polarization element is disposed on the transmission paths of the first beam and the first compensation beam and located between the light source device and the light homogenizing element. The first beam and the first compensation beam pass through the polarization element to change polarization states of the first beam and the first compensation beam to be the same as polarization states of the second and third beams.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: May 17, 2022
    Assignee: Coretronic Corporation
    Inventors: Chun-Wei Lin, Chin-Wen Huang
  • Patent number: RE49885
    Abstract: The wire grid type polarization device includes a substrate, and a metal layer formed on one face of the substrate in a substantially stripe shape in a plan view, a first dielectric layer provided on two side faces opposite to each other among a plurality of side faces of the metal layer and in a top part of the metal layer, and a second dielectric layer provided on the first dielectric layer. A substrate side end portion of the second dielectric layer is located between the one surface of the substrate and the top part of the first metal layer. The wire grid type polarization device includes a substrate and a plurality of metal layers that includes a first metal layer having a first side face, a second side face opposed to the first side face, and a top part. First and second dielectric layers are provided in the first side face, the second side face, and the top part of the first metal layer. The first dielectric layer is provided between the first metal layer and the second dielectric layer.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: March 26, 2024
    Assignee: Seiko Epson Corporation
    Inventor: Yoshitomo Kumai