Patents by Inventor Yasutake MIGITA

Yasutake MIGITA 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).

  • Image projection unit and image projection apparatus
    Patent number: 9946148
    Abstract: An image projection unit includes: a light source unit; a plurality of reflection-type image display elements; a plurality of total reflection prisms configured to guide lights of multiple colors emitted from the light source unit to the reflection-type image display elements and to emit the lights reflected from the reflection-type image display elements; a color synthesis prism configured to receive the lights emitted from the total reflection prisms, synthesize the lights, and emit the synthesized lights; a holding member fixed to the color synthesis prism and holding the reflection-type image display elements; and a base member supporting the color synthesis prism and the plurality of total reflection prisms
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: April 17, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yasutake Migita, Hiroshi Hirasawa, Daisuke Haga
  • Image Projection Unit And Image Projection Device
    Publication number: 20170123303
    Abstract: An image projection unit includes: a light source unit; a plurality of reflection-type image display elements; a plurality of total reflection prisms configured to guide lights of multiple colors emitted from the light source unit to the reflection-type image display elements and to emit the lights reflected from the reflection-type image display elements; a color synthesis prism configured to receive the lights emitted from the total reflection prisms, synthesize the lights, and emit the synthesized lights; a holding member fixed to the color synthesis prism and holding the reflection-type image display elements; and a base member supporting the color synthesis prism and the plurality of total reflection prisms
    Type: Application
    Filed: May 21, 2015
    Publication date: May 4, 2017
    Inventors: Yasutake MIGITA, Hiroshi HIRASAWA, Daisuke HAGA
  • Lens barrel and projector
    Patent number: 8743475
    Abstract: A lens barrel and a projector of the invention are provided with a fixed cylinder, and a cam ring mounted on the fixed cylinder. A first projection and a second projection are provided on one of the fixed cylinder and the cam ring, and a first rotation restricting portion and a second rotation restricting portion are provided on the other of the fixed cylinder and the cam ring. The first rotation restricting portion restricts rotation of the cam ring by abutting contact with the first projection when the cam ring is rotated in a first direction, and the second rotation restricting portion restricts rotation of the cam ring by abutting contact with the second projection when the cam ring is rotated in a second direction opposite to the first direction.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: June 3, 2014
    Assignee: Konica Minolta Advanced Layers, Inc.
    Inventors: Yasutake Migita, Takahiro Tatsumi
  • LENS BARREL AND PROJECTOR
    Publication number: 20120314114
    Abstract: A lens barrel and a projector of the invention are provided with a fixed cylinder, and a cam ring mounted on the fixed cylinder. A first projection and a second projection are provided on one of the fixed cylinder and the cam ring, and a first rotation restricting portion and a second rotation restricting portion are provided on the other of the fixed cylinder and the cam ring. The first rotation restricting portion restricts rotation of the cam ring by abutting contact with the first projection when the cam ring is rotated in a first direction, and the second rotation restricting portion restricts rotation of the cam ring by abutting contact with the second projection when the cam ring is rotated in a second direction opposite to the first direction.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 13, 2012
    Applicant: KONICA MINOLTA ADVANCED LAYERS, INC.
    Inventors: Yasutake MIGITA, Takahiro TATSUMI