Patents by Inventor Yoshihisa Iwamoto

Yoshihisa Iwamoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240230051
    Abstract: To improve the brightness of irradiated light in the lighting apparatus using a liquid crystal element. A lighting apparatus includes: a light source; a condensing unit that condenses light emitted from the light source so that it forms a focal point at a predetermined position; a liquid crystal element arranged corresponding to the position of the focal point; a first polarizing element disposed on a light incident surface of the liquid crystal element; a second polarizing element disposed on a light emitting surface of the liquid crystal element; and a projection lens that magnifies and projects images generated by the liquid crystal element and the first and second polarizing element; where the liquid crystal element is arranged at a tilt such that the light incident surface and the light emitting surface form a predetermined angle that is non-orthogonal and non-parallel to the optical axis of the projection lens.
    Type: Application
    Filed: May 16, 2022
    Publication date: July 11, 2024
    Inventors: Hiroaki IDO, Matsuo KAMEI, Yoshihisa IWAMOTO
  • Patent number: 11567368
    Abstract: Provided is an optical apparatus that is capable of switching between a state in which the optical apparatus can reflect light and a state in which the optical apparatus can output light and suppressing deterioration of display quality of a light reflection image. The optical apparatus includes: a light emitting device having a light emitting surface; an absorption type polarizing plate disposed opposite to the light emitting surface of the light emitting device; a liquid crystal optical element disposed between the light emitting device and the absorption type polarizing plate; a reflection type polarizing plate disposed between the light emitting device and the liquid crystal optical element; and an adhesive layer disposed on a surface of the reflection type polarizing plate that faces the light emitting device.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: January 31, 2023
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Tomohide Mano, Yoshihisa Iwamoto
  • Publication number: 20210364837
    Abstract: Provided is an optical apparatus that is capable of switching between a state in which the optical apparatus can reflect light and a state in which the optical apparatus can output light and suppressing deterioration of display quality of a light reflection image. The optical apparatus includes: a light emitting device having a light emitting surface; an absorption type polarizing plate disposed opposite to the light emitting surface of the light emitting device; a liquid crystal optical element disposed between the light emitting device and the absorption type polarizing plate; a reflection type polarizing plate disposed between the light emitting device and the liquid crystal optical element; and an adhesive layer disposed on a surface of the reflection type polarizing plate that faces the light emitting device.
    Type: Application
    Filed: May 20, 2021
    Publication date: November 25, 2021
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Tomohide MANO, Yoshihisa IWAMOTO
  • Patent number: 11009734
    Abstract: To reliably perform light irradiation in a vehicular lamp system using a liquid crystal element even in a cryogenic environment. A control device for a vehicular lamp comprising a light source and a liquid crystal element where the liquid crystal element is set to a light-shielded state and the light source is set to a light-on state to heat the liquid crystal element by the light emitted from the light source when the temperature of the liquid crystal element is estimated to be lower than a predetermined value.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: May 18, 2021
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Yoshihisa Iwamoto, Takuya Kitazono
  • Patent number: 10914444
    Abstract: To increase the light utilization efficiency when selective light irradiation is performed using a liquid crystal element (a liquid crystal device). A lamp unit including: a light source; a reflective polarizing plate disposed at a position where light from the light source is incident; a reflecting mirror configured to reflect a reflected light generated by the reflective polarizing plate and re-enters the reflected light to the reflective polarizing plate; a liquid crystal device disposed on the light emitting surface side of the reflective polarizing plate; a polarizing plate disposed on the light emitting surface side of the liquid crystal device; and a lens disposed on the light emitting surface side of the polarizing plate.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: February 9, 2021
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Yoshifumi Takao, Masafumi Ohno, Yoshihisa Iwamoto
  • Publication number: 20200386384
    Abstract: To obtain projection images with high contrast when selective light irradiation is performed forward of its own vehicle. A lamp unit for a vehicular lamp system performing selective light irradiation to the surroundings of the own vehicle includes: a light source; an optical shutter part that modulates light emitted from the light source; and an optical system that projects the light transmitted through the optical shutter part. The optical shutter part includes: polarizers; a liquid crystal element disposed between the polarizers and where the initial alignment of liquid crystal molecules is horizontally aligned and causes an alignment change in the in-plane direction upon electric field application; a first optical plate which is a positive A-plate disposed between the polarizers closer to the light source and the liquid crystal element; and a second optical plate which is a positive C-plate disposed between the first optical plate and the liquid crystal element.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 10, 2020
    Applicant: Stanley Electric Co., Ltd.
    Inventors: Yasuo TOKO, Yoshihisa IWAMOTO
  • Patent number: 10808904
    Abstract: To obtain projection images with high contrast when selective light irradiation is performed forward of its own vehicle. A lamp unit for a vehicular lamp system performing selective light irradiation to the surroundings of the own vehicle includes: a light source; an optical shutter part that modulates light emitted from the light source; and an optical system that projects the light transmitted through the optical shutter part. The optical shutter part includes: polarizers; a liquid crystal element disposed between the polarizers and where the initial alignment of liquid crystal molecules is horizontally aligned and causes an alignment change in the in-plane direction upon electric field application; a first optical plate which is a positive A-plate disposed between the polarizers closer to the light source and the liquid crystal element; and a second optical plate which is a positive C-plate disposed between the first optical plate and the liquid crystal element.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: October 20, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Yoshihisa Iwamoto
  • Publication number: 20200217472
    Abstract: To increase the light utilization efficiency when selective light irradiation is performed using a liquid crystal element (a liquid crystal device). A lamp unit including: (a) a light source; (b) a reflective polarizing plate disposed at a position where light from the light source is incident; (c) a reflecting mirror configured to reflect a reflected light generated by the reflective polarizing plate and re-enters the reflected light to the reflective polarizing plate; (d) a liquid crystal device disposed on the light emitting surface side of the reflective polarizing plate; (e) a polarizing plate disposed on the light emitting surface side of the liquid crystal device; and (f) a lens disposed on the light emitting surface side of the polarizing plate.
    Type: Application
    Filed: April 19, 2018
    Publication date: July 9, 2020
    Inventors: Yasuo Toko, Yoshifumi Takao, Masafumi Ohno, Yoshihisa Iwamoto
  • Publication number: 20200063940
    Abstract: To reliably perform light irradiation in a vehicular lamp system using a liquid crystal element even in a cryogenic environment. A control device for a vehicular lamp comprising a light source and a liquid crystal element where the liquid crystal element is set to a light-shielded state and the light source is set to a light-on state to heat the liquid crystal element by the light emitted from the light source when the temperature of the liquid crystal element is estimated to be lower than a predetermined value.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Yasuo Toko, Yoshihisa Iwamoto, Takuya Kitazono
  • Publication number: 20200032977
    Abstract: To obtain projection images with high contrast when selective light irradiation is performed forward of its own vehicle. A lamp unit for a vehicular lamp system performing selective light irradiation to the surroundings of the own vehicle includes: a light source; an optical shutter part that modulates light emitted from the light source; and an optical system that projects the light transmitted through the optical shutter part. The optical shutter part includes: polarizers; a liquid crystal element disposed between the polarizers and where the initial alignment of liquid crystal molecules is horizontally aligned and causes an alignment change in the in-plane direction upon electric field application; a first optical plate which is a positive A-plate disposed between the polarizers closer to the light source and the liquid crystal element; and a second optical plate which is a positive C-plate disposed between the first optical plate and the liquid crystal element.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 30, 2020
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo TOKO, Yoshihisa IWAMOTO
  • Patent number: 10539840
    Abstract: A LCD device containing an active drive dot matrix LCD element, each pixel containing subsidiary pixels each having a color filter; a passive drive segment display LCD element laminated on rear side of the active drive LCD element, having segment electrode, arranged to be applied with a set voltage, the segment electrode having edge defining a segment shape; cross-nicol polarizers disposed on both outer sides of the LCD elements; controller circuit including first part controlling voltages to be applied to subsidiary pixels, and second part controlling voltages to be applied to the segment electrode; wherein the display device produce normally black display in the absence of applied voltage; and wherein when the segment electrode is activated, those subsidiary pixels in pixels outside the edge of the activated segment electrode are partly driven and partly not driven, displaying different color or intermediate grade, than the conventional art.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: January 21, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yoshihisa Iwamoto
  • Publication number: 20190226656
    Abstract: A liquid crystal element comprises: a first substrate and a second substrate disposed substantially in parallel to each other to face each other, an electrode and a homeotropic alignment film being disposed on each of facing surfaces of the first substrate and the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate and formed of a liquid crystal material having a negative dielectric-constant anisotropy, wherein a twisting angle of the liquid crystal layer when a voltage is applied between the electrode of the first substrate and the electrode of the second substrate is in a range from 70° to 120°.
    Type: Application
    Filed: January 23, 2019
    Publication date: July 25, 2019
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo TOKO, Yoshihisa IWAMOTO
  • Publication number: 20190155080
    Abstract: A liquid crystal apparatus comprises, a display device having a display surface, a first polarizing plate categorized as absorption type, disposed so as to face the display surface of the display device, and having a transmittance characteristic that a transmittance to a non-polarized light is 50% or more, a liquid crystal optical element disposed between the display device and the first polarizing plate, and a second polarizing plate categorized as reflection type and disposed between the display device and the liquid crystal optical element.
    Type: Application
    Filed: November 19, 2018
    Publication date: May 23, 2019
    Inventors: Tomohide MANO, Yasuo TOKO, Yoshihisa IWAMOTO
  • Publication number: 20190018291
    Abstract: A LCD device containing an active drive dot matrix LCD element, each pixel containing subsidiary pixels each having a color filter; a passive drive segment display LCD element laminated on rear side of the active drive LCD element, having segment electrode, arranged to be applied with a set voltage, the segment electrode having edge defining a segment shape; cross-nicol polarizers disposed on both outer sides of the LCD elements; controller circuit including first part controlling voltages to be applied to subsidiary pixels, and second part controlling voltages to be applied to the segment electrode; wherein the display device produce normally black display in the absence of applied voltage; and wherein when the segment electrode is activated, those subsidiary pixels in pixels outside the edge of the activated segment electrode are partly driven and partly not driven, displaying different color or intermediate grade, than the conventional art.
    Type: Application
    Filed: June 28, 2018
    Publication date: January 17, 2019
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventor: Yoshihisa Iwamoto
  • Patent number: 10018879
    Abstract: To further reduce time necessary to eliminate the problem caused by static electricity. The liquid crystal display apparatus includes a plurality of unit display regions and the plurality of unit display regions are arranged along a first direction spaced from one another. At least one of a plurality of first electrodes has a plurality of electrode parts corresponding to each of the plurality of unit display regions and are mutually separated and arranged apart from one another in the first direction, a plurality of first lead wirings where each first lead wiring extends in the direction different from the first direction and extends outside an inner area, and a first crossover wiring disposed outside the inner area and mutually connects the plurality of first lead wirings.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: July 10, 2018
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yoshihisa Iwamoto, Takahiro Matsuzaki
  • Patent number: 9933669
    Abstract: A liquid crystal display includes first and second substrates placed opposite each other, a common electrode on one side of the first substrate to substantially cover a whole surface, a segment electrode on one side of the second substrate, a routing wire on one side of the second substrate and connected to the segment electrode, a liquid-crystalline resin film without electrical conductivity on one side of the second substrate, and a liquid crystal film between the substrates. The liquid-crystalline resin film has refractive index anisotropy being substantially equal to that of a liquid crystal material of the liquid crystal film, has molecular alignment being substantially equal to that of the liquid crystal film, and is disposed to fill a space between the routing wire and the common electrode. The liquid crystal film is disposed to fill a space between the segment electrode and the common electrode.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: April 3, 2018
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yoshihisa Iwamoto, Kunihiko Katano
  • Patent number: 9904110
    Abstract: A liquid crystal display includes first and second substrates placed opposite each other, a common electrode on one side of the first substrate to substantially cover a whole surface, a segment electrode on one side of the second substrate, a routing wire on one side of the second substrate and connected to the segment electrode, a liquid-crystalline resin film without electrical conductivity on one side of the second substrate, and a liquid crystal film between the substrates, and being subject to twisted alignment between the substrates. The liquid-crystalline resin film has refractive index anisotropy being substantially equal to that of a liquid crystal material of the liquid crystal film, is subject to twisted alignment, and is disposed to fill a space between the routing wire and the common electrode. The liquid crystal film is disposed to fill a space between the segment electrode and the common electrode.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: February 27, 2018
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yoshihisa Iwamoto, Kunihiko Katano
  • Publication number: 20170336683
    Abstract: To further reduce time necessary to eliminate the problem caused by static electricity. The liquid crystal display apparatus includes a plurality of unit display regions and the plurality of unit display regions are arranged along a first direction spaced from one another. At least one of a plurality of first electrodes has a plurality of electrode parts corresponding to each of the plurality of unit display regions and are mutually separated and arranged apart from one another in the first direction, a plurality of first lead wirings where each first lead wiring extends in the direction different from the first direction and extends outside an inner area, and a first crossover wiring disposed outside the inner area and mutually connects the plurality of first lead wirings.
    Type: Application
    Filed: May 3, 2017
    Publication date: November 23, 2017
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Yoshihisa IWAMOTO, Takahiro MATSUZAKI
  • Patent number: 9772529
    Abstract: A liquid crystal display includes first and second substrates; first and second electrodes provided on the first and second substrates respectively; and a liquid crystal layer provided between the first and second substrates. The first electrode includes first openings each having an elongated shape in a first direction and which are arranged with regularity, and a short side edge thereof is longer than a length between the first openings adjacent in the first direction. The second electrode includes second openings each having an elongated shape in the first direction and which are arranged with regularity, and a short side edge thereof is longer than a length between the second openings adjacent in the first direction. Each of the first and second openings has a recess in at least either of two outer edge parts along the first direction in a planar view.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: September 26, 2017
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yoshihisa Iwamoto
  • Patent number: 9740056
    Abstract: A liquid crystal display apparatus with electrodes comprising openings that is less susceptible to disturbance of the contour shape of the display part. The apparatus includes two substrates, a first electrode, a second electrode. A display part is demarcated in a region where the two electrodes overlap, and an offset region is set from the display part edge to the inside. The electrodes comprise first openings disposed in a non offset region, and second openings disposed in the offset region. First openings comprises a shape wherein a branch part disposed so that the longitudinal direction thereof extends along a first direction and a branch part disposed so that the longitudinal direction thereof extends along a second direction are connected. Second openings comprises openings disposed so that the longitudinal direction thereof extends along the first direction, and openings disposed so that the longitudinal direction thereof extends along the second direction.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: August 22, 2017
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yoshihisa Iwamoto, Makoto Kobayashi