Patents by Inventor Hitoshi Yoshiyuki

Hitoshi Yoshiyuki 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).

  • Actuator, optical apparatus using actuator, and method of manufacturing actuator
    Patent number: 7423824
    Abstract: An actuator includes a holder having a movement hole, a lens barrel which moves within the movement hole, and driving means for driving the lens barrel. Each of the driving means is provided with driving members composed of an artificial muscle. The lens barrel can be suitably moved within the movement hole by making the driving members perform a predetermined operation.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: September 9, 2008
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tatsumaro Yamashita, Hitoshi Yoshiyuki, Masamichi Hayashi, Eiki Matsuo
  • Optical lens adjusting device and adjusting method thereof
    Patent number: 7177103
    Abstract: When a voltage is applied between outside electrodes and a common electrode that constitute driving parts of a driving unit provided between a holder holding a lens and a lens barrel, as shown in FIG. 9, respective dielectric elastomers provided in the driving parts are slightly deformed in a direction that is crushed in an X1–X2 direction. Thus, the entire lens can be slightly moved in the direction of an arrow (X2-direction). This enables an optical axis O?—O? of the lens to coincide with or get closer to a reference optical axis.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: February 13, 2007
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tatsumaro Yamashita, Hitoshi Yoshiyuki, Masamichi Hayashi, Eiki Matsuo
  • Actuator, optical apparatus using actuator, and method of manufacturing actuator
    Publication number: 20060028743
    Abstract: An actuator includes a holder having a movement hole, a lens barrel which moves within the movement hole, and driving means for driving the lens barrel. Each of the driving means is provided with driving members composed of an artificial muscle. The lens barrel can be suitably moved within the movement hole by making the driving members perform a predetermined operation.
    Type: Application
    Filed: July 18, 2005
    Publication date: February 9, 2006
    Inventors: Tatsumaro Yamashita, Hitoshi Yoshiyuki, Masamichi Hayashi, Eiki Matsuo
  • Optical lens adjusting device and adjusting method thereof
    Publication number: 20060028742
    Abstract: When a voltage is applied between outside electrodes and a common electrode that constitute driving parts of a driving unit provided between a holder holding a lens and a lens barrel, as shown in FIG. 9, respective dielectric elastomers provided in the driving parts are slightly deformed in a direction that is crushed in an X1-X2 direction. Thus, the entire lens can be slightly moved in the direction of an arrow (X2-direction). This enables an optical axis O?-O? of the lens to coincide with or get closer to a reference optical axis.
    Type: Application
    Filed: July 15, 2005
    Publication date: February 9, 2006
    Inventors: Tatsumaro Yamashita, Hitoshi Yoshiyuki, Masamichi Hayashi, Eiki Matsuo