Patents by Inventor Yoshiji Iwadare

Yoshiji Iwadare 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).

  • Light source apparatus, its manufacturing method and apparatus, reflector focal position-locating method and apparatus, focal position-locating light source, discharge lamp emission position-locating method and apparatus, and discharge lamp-reflector positioning method and apparatus
    Patent number: 7145665
    Abstract: The light emitted from a focal position-detecting light source 38 and reflected from a reflector 12 is projected onto a screen 341, and a projected image on the screen 341 is detected by a focal position-detecting camera 35. Based on this projected image, the focal position-detecting light source 38 is moved by a position adjusting system 37 so as to place the focal position-detecting light source 38 at a focal position of the reflector 12, and the position of the focal position-detecting light source 38 at this time is detected as the focal position of the reflector 12. When the focal position of the reflector 12 is detected, the projected image on the screen 341 detected by the focal position-detecting camera 35 is used, and, therefore, the conventional measurement by a three dimensional measuring instrument is made unnecessary, thereby improving the working efficiency.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: December 5, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiji Iwadare, Kazuto Shinohara, Shohei Fujisawa
  • Light source apparatus its manufacturing method and apparatus reflector focal point locating method and apparatus focal point locating light source discharge lamp emittion position locating method and apparatus and discharge lamp-reflector positioning method and apparatus
    Publication number: 20040063376
    Abstract: The light emitted from a focal position-detecting light source 38 and reflected from a reflector 12 is projected onto a screen 341, and a projected image on the screen 341 is detected by a focal position-detecting camera 35. Based on this projected image, the focal position-detecting light source 38 is moved by a position adjusting system 37 so as to place the focal position-detecting light source 38 at a focal position of the reflector 12, and the position of the focal position-detecting light source 38 at this time is detected as the focal position of the reflector 12. When the focal position of the reflector 12 is detected, the projected image on the screen 341 detected by the focal position-detecting camera 35 is used, and, therefore, the conventional measurement by a three dimensional measuring instrument is made unnecessary, thereby improving the working efficiency.
    Type: Application
    Filed: July 24, 2003
    Publication date: April 1, 2004
    Inventors: Yoshiji Iwadare, Kazuto Shinohara, Shohei Fujisawa
  • Lamp unit, projector, and fixing method of light source lamp and reflector
    Patent number: 6695461
    Abstract: Since a light source lamp (11) and a reflector (12) of a lamp unit (10) are respectively fixed to a lamp housing (13) in a mutually independent manner, an attachment for attaching and fixing the light source lamp (11) is not necessary to be formed on the reflector (12) as an optical component, so that the shape of the reflector (12) can be simplified and accuracy of a reflection surface (121), especially at a bottom thereof, can be easily improved, thereby enhancing illumination of the lamp unit (10).
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: February 24, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Takaaki Ozawa, Yoshiji Iwadare
  • Lamp unit, projector, and fixing method of light source lamp and reflector
    Publication number: 20020080612
    Abstract: Since a light source lamp (11) and a reflector (12) of a lamp unit (10) are respectively fixed to a lamp housing (13) in a mutually independent manner, an attachment for attaching and fixing the light source lamp (11) is not necessary to be formed on the reflector (12) as an optical component, so that the shape of the reflector (12) can be simplified and accuracy of a reflection surface (121), especially at a bottom thereof, can be easily improved, thereby enhancing illumination of the lamp unit (10).
    Type: Application
    Filed: December 19, 2001
    Publication date: June 27, 2002
    Applicant: Seiko Epson Corporation
    Inventors: Takaaki Ozawa, Yoshiji Iwadare