Polarizer Or Interference Filter Patents (Class 353/20)
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 11327392
    Abstract: A light source device of the present disclosure includes a light emitting device that outputs a first light having a first wavelength in a first polarization direction, a first optical element having a first area and a second area, a second optical element into which the first light reflected by the first area is entered, converting the first light into a circularly-polarized second light having the first wavelength, and a diffuser element into which the second light is entered. The second light entering the second optical element is converted into a third light having the first wavelength in a second polarization direction, the third light is transmitted through the first area, the second light is transmitted through the second area, and a fourth light output from the diffuser element and entered into the first area and the second area is transmitted through the first area and the second area.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: May 10, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11320727
    Abstract: A light source module and a projection apparatus comprising the same are provided. The light source module comprises a light source unit, a light splitting element, and a condenser lens. The light source unit is configured to provide first color light beams including a first sub-light beam and a third sub-light beam, and second color light beams including a second sub-light beam and a fourth sub-light beam. The light source unit comprises a first light source unit to provide the first and second sub-light beams, and a second light source unit to provide the third and fourth sub-light beams. One of the first sub-light beam and the third sub-light beam is transmitted to the condenser lens after being reflected by the light splitting element, and the other of the first sub-light beam and the third sub-light beam is transmitted to the condenser lens after passing through the light splitting element.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: May 3, 2022
    Assignee: Coretronic Corporation
    Inventors: Kun-Chen Hsu, Chin-Wen Huang
  • Patent number: 11307451
    Abstract: An element substrate of an electro-optical device (substrate for an electro-optical device) includes a first lens and a second lens. The first lens is formed between a first substrate and a switching element, and the second lens is formed between the switching element and a pixel electrode. The second lens includes a second lens concave surface and a second lens-forming lens layer. The second lens concave surface is recessed in a surface of an interlayer insulating film. The second lens-forming lens layer is filled in the inside of the second lens concave surface. The interlayer insulating film includes a contact hole in a location not overlapping, in a plan view, with the second lens concave surface. The contact hole electrically couples the pixel electrode to the switching element.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: April 19, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Satoshi Ito
  • Patent number: 11300866
    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, a wavelength converter that converts the wavelength of the first polarization component and causes the second light, and a first phase retarder that is provided in the optical path of the first light between the first polarization separator and the second polarization separator and converts the first polarization component of the first light into the second polarization component.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: April 12, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11300861
    Abstract: A light source apparatus includes a light emitting element configured to emit first light, a wavelength conversion element configured to convert part of first light into second light having a wavelength different from that of the first light, and to emit the second light and unconverted light that is the first light which is not converted into the second light, and an optical element configured to cause the first light from the light emitting element to enter the wavelength conversion element, and the second light and the unconverted light from the wavelength conversion element to travel in a direction different from a direction of the light emitting element. The wavelength conversion element emits the second light and the unconverted light as linear polarization light.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: April 12, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Shun Miura
  • Patent number: 11280996
    Abstract: A light source unit according to an embodiment of the present disclosure includes a light source section and a light-emitting device (1) that is excited by light derived from the light source unit and outputs fluorescence. The light-emitting device (1) includes a first base (11), a phosphor layer (12) provided on one face of the first base (11), and a first heat dissipation member (14) provided at the first base (11). The first heat dissipation member (14) includes a plurality of fins (14a and 14b) disposed to be spaced apart along a periphery.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: March 22, 2022
    Assignee: Sony Corporation
    Inventor: Yoshiro Asano
  • Patent number: 11262491
    Abstract: Provided are a polarizing plate having excellent optical characteristics, and a method for manufacturing the polarizing plate. The present invention is provided with: a translucent substrate through which light passes in a working band; a bundle structure layer constituted of a columnar sheaf comprising one or more material from among dielectrics, metals, and semiconductors, the bundle structure layer being formed on the translucent substrate; an absorption layer formed on the bundle structure layer; a dielectric layer formed on the absorption layer; and a reflection layer formed on the dielectric layer and arranged as a one-dimensional lattice at a pitch that is smaller than the wavelength of the light in the working band. Because the bundle structure layer increases light absorption and light scattering, the result is that reflectivity can be reduced and excellent optical characteristics obtained.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: March 1, 2022
    Assignee: Dexerials Corporation
    Inventors: Akio Takada, Eiji Takahashi, Nobuyuki Koike, Koji Sasaki
  • Patent number: 11249375
    Abstract: An optical module in the present disclosure includes a first image display panel including a first display part and a first coupling part, a second image display panel including a second display part and a second coupling part, a third image display panel including a third display part and a third coupling part, and a cross dichroic prism configured to synthesize first, second, and third image light. The cross dichroic prism has a cross axis at which a two of photosynthesis surfaces cross each other. The first, second, and third image display panel are respectively bonded to different surfaces of the cross dichroic prism in a state where a long side of each of the first, second, and third display part extends along the cross axis and where the first, second, and third coupling part are each positioned on an outer side of the cross dichroic prism.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: February 15, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 11249234
    Abstract: It would be advantageous to improve polarizer high temperature resistance, corrosion resistance, oxidation resistance, optical properties, and etchability. Composite polarizer materials can be used to achieve this. A polarizer can comprise polarization structures configured for polarization of light. The polarization structures can include a reflective rib, the reflective rib being a composite of two different elements. The polarization structures can include an absorptive rib, the absorptive rib being a composite of two different elements. The polarizer can include a transparent layer, the transparent layer being a composite of two different elements.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: February 15, 2022
    Assignee: Moxtek, Inc.
    Inventor: R. Stewart Nielson
  • Patent number: 11243460
    Abstract: Provided is a light source device including a first light source, a light guiding system and a wavelength conversion device. The first light source emits first exciting light which is incident to the light guiding system along an incidence light channel. The wavelength conversion section absorbs the first exciting light and emits excited light. The first exciting light is obliquely incident to a surface of the reflective section and reflected to form second exciting light. The light guiding system collects the excited light and the second exciting light and guides them to be emitted along an exiting light channel. The light guiding system includes an optical path correcting assembly, which reflects the second exciting light in such a manner that main optical axes of the reflected second exciting light and the excited light coincide, and changes a beam angular distribution of the second exciting light.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: February 8, 2022
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Zuqiang Guo, Peng Du, Lin Mi, Yi Li
  • Patent number: 11237471
    Abstract: A light source device according to the present disclosure includes a light source section, a first light separation element for transmitting a part of first light entering the first light separation element irrespective of a polarization component, and reflecting another part of the first light irrespective of a polarization component, a second light separation element for reflecting a part of the first light entering the second light separation element, a diffusion element for diffusing and emitting another part of the first light entering the diffusion element, and a wavelength conversion element for performing wavelength conversion on a part of the first light entering the wavelength conversion element to emit second light, wherein the second light separation element transmits a first polarization component with respect to the second light, and reflects a second polarization component.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: February 1, 2022
    Assignee: Seiko Epson Corporation
    Inventor: Wataru Yasumatsu
  • Patent number: 11209723
    Abstract: An optical module and a projector including the optical module are provided. The optical module includes a base, a first frame body disposed in the base, an optical element disposed in the first frame body, and at least one driving assembly disposed between the base and the first frame body. The first frame body is configured to swing relative to the base through a magnetic force generated by the at least one driving assembly, and each of the at least one driving assembly includes a coil and a magnetic structure that is separated from the coil and includes a magnetic permeable plate, a separation medium, and a magnet element. The separation medium is located on one side of the magnetic permeable plate facing the coil. The magnet element is disposed on the side of the magnetic permeable plate facing the coil and is separated by the separation medium.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: December 28, 2021
    Assignee: Coretronic Corporation
    Inventors: Yi Chang, Shu-Yu Lin, Chien-Sheng Liu, Chun-Min Wu
  • Patent number: 11199720
    Abstract: In various embodiments, optical networking devices and systems are provided. One such optical networking device includes a housing, a beam splitter assembly, and a polarizer assembly. The housing includes a first passage that extends between a first opening and a second opening which are aligned with one another along a first axis, and a second passage that extends between the first passage and a third opening. The third opening is aligned with and communicatively coupled to the first passage along a second axis that is transverse to the first axis. The beam splitter assembly is positioned in the first section of the housing, and includes a first shell, a beam splitter platform, and a beam splitter. The polarizer assembly is positioned in the second section of the housing, and includes a second shell, a polarizer platform, and a polarizer.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: December 14, 2021
    Inventor: John Paul T. Hansen
  • Patent number: 11199718
    Abstract: An image display module according to the present disclosure includes a first display panel including a plurality of first pixels each including a first light-emitting element, the first display panel being configured to emit first colored light of a first wavelength region, a second display panel including a plurality of second pixels each including a second light-emitting element and a plurality of third pixels each including a third light-emitting element, the second display panel being configured to emit second colored light of a second wavelength region, and emit third colored light of a third wavelength region, and a synthesis optical system including a dichroic prism which including a dichroic mirror and being configured to synthesize the first, the second, and the third colored light, the dichroic mirror being configured to transmit or reflect the first colored light and reflect or transmit the second and the third colored light.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: December 14, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takeshi Koshihara
  • Patent number: 11194238
    Abstract: A heat dissipation module includes a housing, at least one inlet, at least one outlet and at least one heat dissipation set. The housing includes a partition dividing the housing, such that a first accommodation space and a second accommodation space are formed inside the housing. At least one opening is disposed in the partition, penetrates through the partition and communicates the first accommodation space with the second accommodation space. The inlet is connected to the housing and communicates with the first accommodation space. The outlet is connected to the housing and communicates with the second accommodation space. The heat dissipation set is located in the second accommodation space. A projection apparatus is also provided. The heat dissipation module and the projection apparatus may effectively exhaust the heat accumulated on the at least one heat dissipation set, which facilitates reducing a temperature of a heat source with high heat-density.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: December 7, 2021
    Assignee: Coretronic Corporation
    Inventors: Wei-Chi Liu, Tsung-Ching Lin, Shi-Wen Lin
  • Patent number: 11194153
    Abstract: Provided in a phase shifting device including a plurality of metal layers and a plurality of first dielectric layers, a metal layer of the plurality of metal layers and a first dielectric layer of the plurality of first dielectric layers being alternately stacked in a first direction, and a second dielectric layer disposed on a side surface of the stacked structure in a second direction, wherein the first dielectric layer includes a first material having a first dielectric constant and the second dielectric layer includes a second material having a second dielectric constant, and wherein the second dielectric constant is greater than the first dielectric constant.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: December 7, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeongyub Lee, Reehyang Kim, Jonghwa Shin, Kiyeon Yang, Yongsung Kim, Jaekwan Kim, Changseung Lee, Narae Han
  • Patent number: 11194240
    Abstract: A light source apparatus includes a red LD array that emits light in a red bandwidth, a blue LD array that emits light in a blue bandwidth, and a light combining part that includes a transmissive region and a reflecting region, the transmissive region transmitting the light emitted from the red LD array therethrough, the reflecting region reflecting the light emitted from the blue LD array.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: December 7, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuya Kurata, Hiroshi Yamamoto, Kimiya Hoshino, Satoshi Nishikawa
  • Patent number: 11165938
    Abstract: An animal-wearable head-mountable display (AW-HMD) device comprises a head fitting designed to fit the head of an animal, and an output subsystem coupled to or integral with the head fitting and configured to output a signal to the animal. The device can comprise an optical module configured to project images into an eye of the animal, and various other modules, such as an audio module, a tactile module and/or an olfactory module. An animal-wearable first person view (AW-FPV) system may be used separately or in conjunction with the AW-HMD device, to enable a remote human user to view the animal's real-world environment from the animal's point of view.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: November 2, 2021
    Assignee: COMMAND SIGHT, INC.
    Inventors: Alan Robert Peper, Jr., Nenad Nestorovic
  • Patent number: 11150485
    Abstract: Provided is a multi-image display apparatus including an image forming device configured to form a first image, a first polarization plate configured to transmit a first polarization component of the first image provided from the image forming device, a second polarization plate configured to transmit a second polarization component of a second image that is provided from a path different from the first image, the second polarization component being different from the first polarization component, a screen configured to reflect and diffuse the first image, and transmit the second image, and a polarization selective lens configured to focus the first image having the first polarization component, and transmit the second image having the second polarization component without refraction.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: October 19, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Changkun Lee, Seokil Moon, Byoungho Lee, Wontaek Seo, Geeyoung Sung, Hongseok Lee
  • Patent number: 11150134
    Abstract: The spectral information acquisition system includes an illumination optical system configured to illuminate an object being moved and a spectral optical system configured to disperse light from the object illuminated by the illumination optical system. The illumination optical system includes a separation element configured to separate a light flux emitted from a light source into a first polarized light flux having a first polarization state and a second polarized light flux having a second polarization state, and a phase plate configured to change the polarization state of at least one of the first polarized light flux and the second polarized light flux. The first polarized light flux illuminates the object from a first direction, and the second polarized light flux illuminates the object from a second direction that is different from the first direction.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: October 19, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazumi Kimura
  • Patent number: 11143812
    Abstract: The present disclosure relates to a display panel and a display device. The display panel includes: a beam splitting member disposed between a light extracting member and a liquid crystal layer, for splitting the light extracted from the light extracting member into linearly polarized lights with polarization directions perpendicular to each other; and a modulating member disposed on a side of the beam splitting member away from the light extracting member, for modulating the linearly polarized light that is incident from the beam splitting member into the liquid crystal layer.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: October 12, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiandong Meng, Wei Wang, Jifeng Tan, Xianqin Meng, Fangzhou Wang, Qiuyu Ling
  • Patent number: 11119394
    Abstract: A light source device configured to emit a light beam in a first direction includes a first exit position from which a first colored light beam is emitted, a second exit position from which a second colored light beam is emitted, a third exit position from which a third colored light beam is emitted, and a fourth exit position from which a fourth colored light beam is emitted, at least one of the first through fourth colored light beams is a target colored light beam which has a peak wavelength out of a reference wavelength range, and a beam diameter of which is to be adjusted, an adjusting element disposed on a light path of the target colored light beam.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: September 14, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11102459
    Abstract: One embodiment can provide a machine-vision system. The machine-vision system can include a structured-light projector, a first camera positioned on a first side of the structured-light projector, and a second camera positioned on a second side of the structured-light projector. The first and second cameras are configured to capture images under illumination of the structured-light projector. The structured-light projector can include a laser-based light source.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: August 24, 2021
    Assignee: eBots Inc.
    Inventors: Zheng Xu, Kai C. Yung, MingDu Kang
  • Patent number: 11086130
    Abstract: An optical device is provided. The optical device includes: a lens including first and second reflective members; and a flexible display device including a first display area disposed on a first side surface of the lens and a second display area disposed on a second side surface of the lens, wherein the first reflective member is configured to reflect a first image displayed on the first display area to a first surface of the lens, and the second reflective member is configured to reflect a second image displayed on the second display area to the first surface of the lens.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: August 10, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Joong Kwon, Hyun Jin Cho, Ju Hwa Ha, Jeong Woo Park, Su Bin Jung
  • Patent number: 11079666
    Abstract: A light source device according to the present disclosure includes a light emitting section configured to emit first light in a first wavelength band, a wavelength conversion layer configured to convert a part of the first light into second light in a second wavelength band, and a polarization split element configured to reflect third light having the first wavelength band and a first polarization direction, transmit fourth light having the first wavelength band and a second polarization direction, reflect fifth light having the second wavelength band and the first polarization direction, and transmit sixth light having the second wavelength band and the second polarization direction. Light intensity of the fourth light is controlled by controlling light intensity of light having the first polarization direction out of the first light entering the wavelength conversion layer and light intensity of light having the second polarization direction.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: August 3, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tomoko Akagawa, Hidefumi Sakata
  • Patent number: 11067241
    Abstract: Intrinsically safe laser sourced illumination. A system for illumination is disclosed, including a plurality of laser illumination sources configured to transmit laser beams; a dichroic mirror spaced from the plurality of laser illumination sources and having an aperture configured to allow the laser beams to pass through the dichroic mirror, the remaining surfaces of the dichroic mirror configured to reflect the laser beams; a phosphor element spaced from the dichroic mirror and coated with a substance to fluoresce when struck by the laser beams and configured to disperse the laser beams and to output combined light that includes fluorescent light and the dispersed laser beams; and an illumination output arranged to receive the combined light from the phosphor element and to output illuminating light containing both the fluorescent light and the dispersed laser beams. Methods are also disclosed.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: July 20, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Vikrant R. Bhakta