Patents by Inventor Ritsuya Oshima

Ritsuya Oshima 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: 10363860
    Abstract: A headlight module includes a light source, a condensing optical element, and a projecting optical element. The light source emits light as projection light. The condensing optical element collects light emitted from the light source and forms an intermediate image with the collected light. A plurality of light sources is included. The projecting optical element magnifies and projects the plurality of intermediate images formed by light emitted from the plurality of light sources. The condensing optical element has a function of refracting passing light.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: July 30, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige Suwa, Ritsuya Oshima, Muneharu Kuwata, Kuniko Kojima
  • Publication number: 20190204528
    Abstract: An illumination device including: a light source including a light emitting element that emits light; a first optical element that transmits the light; a second optical element that transmits the light transmitted by the first optical element; a holder that holds the second optical element; and a spring member including at least one spring portion that generates spring force by being deflected, the spring member pressing the second optical element against the holder with the spring force to hold the second optical element against the holder, wherein the first optical element and the second optical element deflect a center portion in a long edge direction of the at least one spring portion with respect to ends in the long edge direction of the at least one spring portion.
    Type: Application
    Filed: July 12, 2017
    Publication date: July 4, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ritsuya OSHIMA, Masashige SUWA, Keiji NAKAMURA, Muneharu KUWATA
  • Publication number: 20190203895
    Abstract: A headlight module includes a light source, a light guide element, and a projection optical element. The light source emits light. The light guide element has a reflecting surface for reflecting light emitted from the light source and an emitting surface for emitting light reflected by the reflecting surface. The projection optical element projects light emitted from the emitting surface. In a direction of an optical axis of the projection optical element, an end portion on the emitting surface side of the reflecting surface includes a point located at a focal position of the projection optical element.
    Type: Application
    Filed: March 7, 2019
    Publication date: July 4, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashige SUWA, Ritsuya OSHIMA, Kuniko KOJIMA, Muneharu KUWATA
  • Patent number: 10336240
    Abstract: A headlight unit includes: a light source that emits a light beam for irradiating a forward area in a traveling direction; a light guide portion that receives the light beam and forms planar light having a divergence angle; a projection lens portion that projects the planar light forward; and a drive unit that changes a position of the projection lens portion. The drive unit is disposed in a region overlapping with the projection lens portion, as optically viewed from an optical axis direction of the light guide portion or the projection lens portion.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: July 2, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ritsuya Oshima, Masahige Suwa, Muneharu Kuwata, Kuniko Kojima
  • Patent number: 10267472
    Abstract: A headlight module includes a light source, a light guide element, and a projection optical element. The light source emits light. The light guide element has a reflecting surface for reflecting light emitted from the light source and an emitting surface for emitting light reflected by the reflecting surface. The projection optical element projects light emitted from the emitting surface. In a direction of an optical axis of the projection optical element, an end portion on the emitting surface side of the reflecting surface includes a point located at a focal position of the projection optical element.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: April 23, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige Suwa, Ritsuya Oshima, Kuniko Kojima, Muneharu Kuwata
  • Publication number: 20190017675
    Abstract: A headlight module for projecting a light distribution pattern includes: a light source for emitting light; and an optical element including a first reflecting surface for reflecting the light as first reflected light, a second reflecting surface for reflecting, as second reflected light, light passing through a traveling direction side of an edge portion of the first reflecting surface, a first emitting surface for emitting the first reflected light, and a second emitting surface for emitting the second reflected light, the traveling direction side being a side toward which the first reflected light travels. The edge portion is an edge portion on the traveling direction side. The first reflecting surface forms a high luminous intensity region of the light distribution pattern by superposing the first reflected light and light that has not been reflected by the first reflecting surface, and forms a cutoff line of the light distribution pattern.
    Type: Application
    Filed: January 10, 2017
    Publication date: January 17, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige SUWA, Ritsuya OSHIMA, Keiji NAKAMURA, Kuniko KOJIMA, Muneharu KUWATA
  • Publication number: 20190011103
    Abstract: A headlight module for projecting a light distribution pattern includes: a first source for emitting first light; a second source for emitting second light; an element including a first guide for guiding the first light and a second guide for guiding the second light; and a condensing element for concentrating the second light. An emitting surface of the element includes first and second regions. The first light is emitted from the regions. The second light is emitted from the second region. The second region side of the second guide is connected to the first guide. The first light guided by the first guide enters the second guide. The pattern includes a pattern formed at a light concentration position of the condensing element. The second guide includes an incident surface. A focal position of the emitting surface and a focal position of the incident surface coincide with the light concentration position.
    Type: Application
    Filed: January 10, 2017
    Publication date: January 10, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige SUWA, Ritsuya OSHIMA, Keiji NAKAMURA, Kuniko KOJIMA, Muneharu KUWATA
  • Publication number: 20180245763
    Abstract: A lighting apparatus includes a light source unit and a light guide unit. The light source unit includes a light source that emits light. The light guide unit includes a reflective surface that changes a traveling direction of the light to produce reflected light, and guides the light emitted from the light source unit to make the light reach the reflective surface. A plurality of the reflective surfaces-is provided. The light source unit selects one of the plurality of reflective surfaces and emits the light to the selected reflective surface. Thus it is possible to prevent an increase in the number of places where light sources are disposed and to change light-emitting regions on the light guide unit.
    Type: Application
    Filed: August 18, 2016
    Publication date: August 30, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ritsuya OSHIMA, Akihiro YAMADA, Masashige SUWA, Masatoshi NISHIMURA, Keiji NAKAMURA
  • Publication number: 20180187850
    Abstract: A headlight module includes a light source, a light guide element, and a projection optical element. The light source emits light. The light guide element has a reflecting surface for reflecting light emitted from the light source and an emitting surface for emitting light reflected by the reflecting surface. The projection optical element projects light emitted from the emitting surface. In a direction of an optical axis of the projection optical element, an end portion on the emitting surface side of the reflecting surface includes a point located at a focal position of the projection optical element.
    Type: Application
    Filed: February 28, 2018
    Publication date: July 5, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashige SUWA, Ritsuya OSHIMA, Kuniko KOJIMA, Muneharu KUWATA
  • Publication number: 20180128442
    Abstract: A headlight module includes a light source, a light distribution control element and a projection optical element. The light source emits light. The light distribution control element forms a light distribution pattern by changing a divergence angle of the light incident therein. The projection optical element projects the light distribution pattern. The light distribution control element includes a first light distribution formation part configured to form a high luminosity region in the light distribution pattern and a second light distribution formation part configured to form a low luminosity region in the light distribution pattern. The low luminosity region is lower in luminosity than the high luminosity region.
    Type: Application
    Filed: May 17, 2016
    Publication date: May 10, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige SUWA, Ritsuya OSHIMA, Keiji NAKAMURA, Kuniko KOJIMA, Muneharu KUWATA
  • Publication number: 20180118093
    Abstract: A headlight module includes: a light source that emits light; a projection lens that receives and emits the light; a holder including a flexible portion having a length in a direction of an optical axis of the lens and having a fixed end and a movable end, the holder holding the lens movably relative to the light source by holding the lens with the movable end; and a driver that moves the lens. The lens is translated on a plane perpendicular to the axis due to deflection of the flexible portion. The holder includes first and second flexible portions including plate-like portions parallel to the axis and perpendicular to each other. One end of the first flexible portion is the fixed end. Another end of the first flexible portion is connected to one end of the second flexible portion. Another end of the second flexible portion is the movable end.
    Type: Application
    Filed: February 23, 2016
    Publication date: May 3, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Mitsuhiro YAMAZUMI, Ritsuya OSHIMA, Atsushi MICHIMORI, Masashige SUWA, Kuniko KOJIMA
  • Patent number: 9945528
    Abstract: A headlight module includes a light source, a light guide element, and a projection optical element. The light source emits light. The light guide element has a reflecting surface for reflecting light emitted from the light source and an emitting surface for emitting light reflected by the reflecting surface. The projection optical element projects light emitted from the emitting surface. In a direction of an optical axis of the projection optical element, an end portion on the emitting surface side of the reflecting surface includes a point located at a focal position of the projection optical element.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: April 17, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige Suwa, Ritsuya Oshima, Kuniko Kojima, Muneharu Kuwata
  • Patent number: 9873371
    Abstract: A headlight device includes a light source, a base member, a light distribution formation member, a rotary member, a projection lens and a transmission mechanism. The base member holds the light source. The light distribution formation member forms a light distribution pattern. The rotary member holds the light distribution formation member and is held by the base member to be rotatable. The projection lens is held by the rotary member to be rotatable around a rotation axis orthogonal to a rotation axis. The transmission mechanism includes a transmission member for transmitting a rotation amount of the rotary member with respect to the base member to the projection lens and rotates the projection lens according to the rotation of the rotary member with respect to the base member.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: January 23, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ritsuya Oshima, Masashige Suwa, Kuniko Kojima
  • Patent number: 9810392
    Abstract: A vehicle headlight device 100 according to the present invention includes a first lamp 92 that has a light source 211, an optical system 21, a rolling mechanism 50, and a control circuit 60. The optical system 21 includes a first wedge prism 30 and a second wedge prism 40 in which an incident ray from the light source 211 is deflected and projected. The rolling mechanism 50 rotates the first wedge prism 30 about a rotation axis. The control circuit 60 controls the rolling mechanism 50 so that the first wedge prism 30 is rotated in a direction opposite to a vehicle bank direction in accordance with a vehicle bank angle d. The first wedge prism 30 and the second wedge prism 40 are disposed so that their surfaces perpendicular to the rotation axis face each other. The first wedge prism 30 is disposed so that a wedge angle a1 directs in a road surface direction. The first wedge prism 30 is disposed so as to be rotatable about the rotation axis.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: November 7, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige Suwa, Ritsuya Oshima, Muneharu Kuwata, Atsushi Michimori, Kuniko Kojima
  • Publication number: 20170198877
    Abstract: A headlight module includes: a light source for emitting light; a condensing optical element for concentrating the light; and an optical element including an incident surface for receiving the concentrated light, a reflecting surface for reflecting the received light, and an emitting surface for emitting the reflected light. The condensing optical element changes a divergence angle of the light to form a light distribution pattern. The reflected light and light that enters the optical element and is not reflected by the reflecting surface are superposed on a plane including a point located at a focal position of the emitting surface in a direction of an optical axis of the emitting surface and being perpendicular to the optical axis, thereby forming a high luminous intensity region in the light distribution pattern on the plane. The emitting surface has positive refractive power and projects the light distribution pattern formed on the plane.
    Type: Application
    Filed: November 14, 2014
    Publication date: July 13, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashige SUWA, Ritsuya OSHIMA, Kuniko KOJIMA
  • Patent number: 9689549
    Abstract: A vehicle headlight device 100 includes a light source 11, a Dove prism 40, and a rotation mechanism 50. The light source 11 emits light. The Dove prism 40 changes a propagation direction of light received at an incidence surface 401 to bring the light to a reflecting surface 402, and changes a propagation direction of light reflected at the reflecting surface 402 to output the light from an exit surface 403. The rotation mechanism 50 rotatably supports the Dove prism 40 about a line which passes through the incidence surface 401 and the exit surface 403 as an axis of rotation R, and rotates the Dove prism 40 in a direction opposite to a bank direction of a vehicle body in accordance with a bank angle k of the vehicle body.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: June 27, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige Suwa, Ritsuya Oshima, Muneharu Kuwata, Atsushi Michimori, Kuniko Kojima
  • Publication number: 20160339834
    Abstract: A headlight device includes a light source, a base member, a light distribution formation member, a rotary member, a projection lens and a transmission mechanism. The base member holds the light source. The light distribution formation member forms a light distribution pattern. The rotary member holds the light distribution formation member and is held by the base member to be rotatable. The projection lens is held by the rotary member to be rotatable around a rotation axis orthogonal to a rotation axis. The transmission mechanism includes a transmission member for transmitting a rotation amount of the rotary member with respect to the base member to the projection lens and rotates the projection lens according to the rotation of the rotary member with respect to the base member.
    Type: Application
    Filed: January 23, 2015
    Publication date: November 24, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ritsuya OSHIMA, Masashige SUWA, Kuniko KOJIMA
  • Publication number: 20160312970
    Abstract: A headlight module includes a light source, a condensing optical element, and a projecting optical element. The light source emits light as projection light. The condensing optical element collects light emitted from the light source and forms an intermediate image with the collected light. A plurality of light sources is included. The projecting optical element magnifies and projects the plurality of intermediate images formed by light emitted from the plurality of light sources. The condensing optical element has a function of refracting passing light.
    Type: Application
    Filed: December 8, 2014
    Publication date: October 27, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashige SUWA, Ritsuya OSHIMA, Muneharu KUWATA, Kuniko KOJIMA
  • Patent number: D796089
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: August 29, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masashige Suwa, Ritsuya Oshima, Kuniko Kojima
  • Patent number: D825797
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: August 14, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masashige Suwa, Ritsuya Oshima, Kuniko Kojima