Patents by Inventor Yujin Yamazaki

Yujin Yamazaki 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).

  • Mirror fixing method and optical apparatus
    Patent number: 7073915
    Abstract: An object of the invention is to provide a mirror fixing method capable of reducing stress distortion of a surface of a mirror which constitutes an optical system, with hardly deforming a surface shape of the mirror. To this end, the present mirror fixing method is characterized in that a mirror part including a base plate formed with a mirror on one face thereof, is provided with a boss on the other face of the base plate opposite to the face on which the mirror is formed, and only the boss is fixed, so that the mirror part excluding the boss is not in contact with other members.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: July 11, 2006
    Assignee: Fujitsu Limited
    Inventors: Hideo Okada, Yuji Sakata, Shinichi Wakana, Yujin Yamazaki, Yuichi Kawahata, Nobuaki Mitamura
  • Optical device
    Patent number: 6894851
    Abstract: A cabinet provided with light input/output holes accommodates a VIPA optical element, a lens, a fixing material fixing the VIPA optical element. A temperature-controlled heater controls the temperature of and inside the cabinet. Both the light input and output holes of the cabinet are blocked by the fixing material and the lens, respectively, so that temperature inside the cabinet is not influenced by the outside air.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: May 17, 2005
    Assignee: Fujitsu Limited
    Inventors: Yujin Yamazaki, Yuichi Kawahata, Nobuaki Mitamura, Hirohiko Sonoda
  • Optical device
    Publication number: 20040057115
    Abstract: A stress correction film is applied to one side of a VIPA optical element provided with a multi-layer fully reflective film and an anti-reflective film on one surface of a transparent plate, and a semi-transparent multi-layer reflective film on the other surface, in order to adjust the unbalance between the respective stress of the multi-layer films on each surface. In other words, by applying a stress correction film, the unbalance between the respective stress of the multi-layer films on each surface of the VIPA optical element is corrected, and accordingly a VIPA optical element with low profile irregularity can be realized.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 25, 2004
    Applicant: Fujitsu Limited
    Inventors: Yujin Yamazaki, Yuichi Kawahata, Nobuaki Mitamura, Hirohiko Sonoda
  • Mirror fixing method and optical apparatus
    Publication number: 20040057127
    Abstract: An object of the invention is to provide a mirror fixing method capable of reducing stress distortion of a surface of a mirror which constitutes an optical system, with hardly deforming a surface shape of the mirror. To this end, the present mirror fixing method is characterized in that a mirror part including a base plate formed with a mirror on one face thereof, is provided with a boss on the other face of the base plate opposite to the face on which the mirror is formed, and only the boss is fixed, so that the mirror part excluding the boss is not in contact with other members.
    Type: Application
    Filed: September 16, 2003
    Publication date: March 25, 2004
    Applicant: FUJITSU LIMITED
    Inventors: Hideo Okada, Yuji Sakata, Shinichi Wakana, Yujin Yamazaki, Yuichi Kawahata, Nobuaki Mitamura
  • Optical device
    Publication number: 20040057128
    Abstract: A cabinet provided with light input/output holes accommodates a VIPA optical element, a lens, a fixing material fixing the VIPA optical element. A temperature-controlled heater controls the temperature of and inside the cabinet. Both the light input and output holes of the cabinet are blocked by the fixing material and the lens, respectively, so that temperature inside the cabinet is not influenced by the outside air.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 25, 2004
    Applicant: FUJITSU LIMITED
    Inventors: Yujin Yamazaki, Yuichi Kawahata, Nobuaki Mitamura, Hirohiko Sonoda