Patents by Inventor Yasuo Toko

Yasuo Toko 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).

  • Patent number: 11119365
    Abstract: To improve the appearance of a light distribution pattern. A liquid crystal element including: a first substrate; a second substrate; a liquid crystal layer; and columnar bodies; where the first substrate has a counter electrode provided on its one surface side; where the second substrate is configured to include wiring parts provided on its one surface side, an insulating layer provided on the upper side of the wiring parts, and pixel electrodes provided on the upper side of the insulating layer; where the pixel electrodes are arranged along a first direction; where each wiring part is connected to one of the pixel electrodes, arranged on the lower layer side of the pixel electrodes, and has a connection region that passes through a gap between the pixel electrodes adjacent to each other in the first direction; and where the columnar bodies is provided at a position overlapping the connection region.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: September 14, 2021
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yasuo Toko
  • 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: 10859227
    Abstract: To provide a lighting apparatus etc. that is capable of obtaining various light distribution patterns and is superior in light utilization efficiency. The lighting apparatus includes a light source, a light conversion part for converting the light emitted from the light source into nearly parallel beams, a light modulating part having a plurality of pixel regions arranged so that the nearly parallel beams can be incident and capable of switching between a light transmitting state and a light scattering state for each of the pixel regions, and a projection lens disposed on the light path of the nearly parallel beams and on the light emitting side of the light modulating part and where the projection lens projects an image formed by the light modulating part using the nearly parallel beams.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: December 8, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yasuo Toko
  • Patent number: 10830407
    Abstract: A vehicular lamp includes: a light source; a liquid crystal element including a liquid crystal layer and a pair of sandwiching substrates; and a projection optical system. In this vehicular lamp, one of the pair of sandwiching substrates in the liquid crystal element includes a first transparent substrate, and a common electrode disposed on the first transparent substrate, and the other of the pair of sandwiching substrates in the liquid crystal element includes a second transparent substrate, a plurality of wiring electrodes disposed on the second transparent substrate, an insulating layer disposed on the second transparent electrode to cover the plurality of wiring electrodes, a plurality of segment electrodes disposed on the insulating layer, and a plurality of connection electrodes configured to electrically connect each of the plurality of wiring electrodes to each of the plurality of segment electrodes through the insulating layer.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: November 10, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yasuo Toko
  • 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
  • Patent number: 10781992
    Abstract: To facilitate lead wiring layout corresponding to an increase in the number of individual electrodes of the liquid crystal element in a vehicle headlamp system. The vehicle headlamp system that selectively performs light irradiation towards the periphery of its own vehicle includes a light source, a liquid crystal element, and a lens. The liquid crystal element includes a plurality of first individual electrode parts, a plurality of second individual electrode parts, and a first lead wiring part. The first lead wiring part includes a plurality of first individual wirings each of which is connected to one of the plurality of first individual electrode parts, and a plurality of second individual wirings each of which is connected to one of the plurality of second individual electrode parts and arranged through a gap formed between the adjacent first individual electrode parts in the first direction.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: September 22, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Tomohide Mano, Hiroshi Tozuka
  • Patent number: 10738958
    Abstract: A lighting device comprising: a light source for emitting lights along optic axis toward field of view; a liquid crystal element disposed on the optic axis, having electrode pattern in far field FF corresponding region and having no electrode pattern in near field corresponding region; a pair of polarizers including input side and output side polarizers sandwiching the liquid crystal element, constituting crossed Nicol polarizers; driver circuit for forming voltages applied to the electrode pattern; and phase shift forming element disposed between the pair of polarizers in the near field corresponding region of the liquid crystal element; wherein the far field corresponding region constitutes normally black optic system together with the pair of polarizers, and the near field corresponding region constitutes normally-on optic system together with the phase shift forming element and the pair of polarizers.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: August 11, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Yoshifumi Takao, Takashi Sugiyama
  • 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
  • Patent number: 10650765
    Abstract: To improve the appearance of a light distribution pattern. A liquid crystal element having a first substrate, a second substrate, and a liquid crystal layer, where the first substrate has a counter electrode, where the second substrate includes inter-pixel electrodes, wiring parts, an insulating layer provided above the inter-pixel electrodes and the wiring parts, and pixel electrodes provided above the insulating layer, where the pixel electrodes are arranged along a first direction and a second direction, where the inter-pixel electrodes are arranged to at least overlap with a gap between the two pixel electrodes adjacent to each other in the first direction among the pixel electrodes and are connected to one of the two pixel electrodes through a through hole provided in the insulating layer, and where the wiring parts are connected to one of the inter-pixel electrodes and are arranged on the lower layer side of the pixel electrodes.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: May 12, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Tomohide Mano, Keisuke Kato
  • Publication number: 20200142263
    Abstract: To improve the appearance of a light distribution pattern. A liquid crystal element including: a first substrate; a second substrate; a liquid crystal layer; and columnar bodies; where the first substrate has a counter electrode provided on its one surface side; where the second substrate is configured to include wiring parts provided on its one surface side, an insulating layer provided on the upper side of the wiring parts, and pixel electrodes provided on the upper side of the insulating layer; where the pixel electrodes are arranged along a first direction; where each wiring part is connected to one of the pixel electrodes, arranged on the lower layer side of the pixel electrodes, and has a connection region that passes through a gap between the pixel electrodes adjacent to each other in the first direction; and where the columnar bodies is provided at a position overlapping the connection region.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 7, 2020
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventor: Yasuo TOKO
  • Patent number: 10600978
    Abstract: To improve the accuracy of fully controlling the direction of advancing light. The liquid crystal element includes a first substrate and a second substrate, a liquid crystal layer provided between one surface side of the first substrate and one surface side of the second substrate, a pair of electrodes provided on one surface side of the first substrate with a gap therebetween in a planer view, a high-resistance film provided on one surface side of the first substrate and disposed between the pair of electrodes in a planer view and connected thereto, a first alignment film provided on one surface side of the first substrate covering the pair of electrodes and the high-resistance film, a second alignment film provided on one surface side of the second substrate, wherein sheet resistance of the high-resistance film is greater than sheet resistance of the pair of electrodes.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: March 24, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yasuo Toko
  • 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
  • Patent number: 10571090
    Abstract: An automotive headlight includes: a light source for emitting light; a polarization beam splitter for receiving a light flux from the light source, and dividing the light flux into a first polarization and a second polarization; a liquid crystal element disposed to receive the first polarization and the second polarization, divided by the polarization beam splitter; a phase shifter disposed on optical axis of one of the first polarization and the second polarization, and aligning polarization axis directions of the first polarization and the second polarization; and an output side polarizer disposed on output side of the liquid crystal element, wherein illumination regions corresponding to respective control electrodes in the liquid crystal element can be controlled to shield light.
    Type: Grant
    Filed: September 8, 2018
    Date of Patent: February 25, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Ryotaro Owada, Yoshifumi Takao
  • Patent number: 10551018
    Abstract: To reduce the optical members and the complexity of optical design. A vehicular lamp including: a light source; a light collecting member; a first polarizer advancing in a first direction a first component of the light, and advancing in a second direction a second component; a liquid crystal element disposed on one side of the first polarizer in the first direction; a second polarizer disposed on one side of the liquid crystal element in the first direction; a projection lens disposed on one side of the second polarizer in the first direction and projecting the first component to the front of an own vehicle; a reflecting member for reflecting the second component; where the first component is focused at a first focal point, the second component of the light is focused at a second focal point, and the liquid crystal element is disposed corresponding to the first focal point.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: February 4, 2020
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Yasuo Toko, Ryotaro Owada, Yoshifumi Takao
  • Publication number: 20200032978
    Abstract: A vehicular lamp includes: a light source; a liquid crystal element including a liquid crystal layer and a pair of sandwiching substrates; and a projection optical system. In this vehicular lamp, one of the pair of sandwiching substrates in the liquid crystal element includes a first transparent substrate, and a common electrode disposed on the first transparent substrate, and the other of the pair of sandwiching substrates in the liquid crystal element includes a second transparent substrate, a plurality of wiring electrodes disposed on the second transparent substrate, an insulating layer disposed on the second transparent electrode to cover the plurality of wiring electrodes, a plurality of segment electrodes disposed on the insulating layer, and a plurality of connection electrodes configured to electrically connect each of the plurality of wiring electrodes to each of the plurality of segment electrodes through the insulating layer.
    Type: Application
    Filed: July 24, 2019
    Publication date: January 30, 2020
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventor: Yasuo TOKO
  • 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: 10534231
    Abstract: A lighting device includes: a liquid crystal element having electrode pattern including a first portion and a second portion; drive circuit connected to the electrode pattern; polarizer disposed in front of the liquid crystal element and separated from the liquid crystal element in optical axis direction; analyzer disposed at rear of the liquid crystal element, and separated from the liquid crystal element in optical axis direction, wherein the polarizer and the analyzer constitute crossed Nicol polarizers; light source for supplying lights to the liquid crystal element within a predetermined incident angle range; and projection optical system projecting lights transmitted through the liquid crystal element forwardly; wherein the polarizer and the analyzer locally overlap with the liquid crystal element in projection normal to the liquid crystal element, and when the light source is turned on, the drive circuit supplies drive signal to the first portion of the electrode pattern which applies or releases volta
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: January 14, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo Toko, Yoshifumi Takao
  • Publication number: 20190360653
    Abstract: To reduce the optical members and the complexity of optical design. A vehicular lamp including: a light source; a light collecting member; a first polarizer advancing in a first direction a first component of the light, and advancing in a second direction a second component; a liquid crystal element disposed on one side of the first polarizer in the first direction; a second polarizer disposed on one side of the liquid crystal element in the first direction; a projection lens disposed on one side of the second polarizer in the first direction and projecting the first component to the front of an own vehicle; a reflecting member for reflecting the second component; where the first component is focused at a first focal point, the second component of the light is focused at a second focal point, and the liquid crystal element is disposed corresponding to the first focal point.
    Type: Application
    Filed: May 14, 2019
    Publication date: November 28, 2019
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Yasuo TOKO, Ryotaro OWADA, Yoshifumi TAKAO