Patents by Inventor Junichi Yoshimoto

Junichi Yoshimoto 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).

  • Objective lens driver, method of manufacturing objective lens driver, optical pickup device and optical disk apparatus
    Publication number: 20070171776
    Abstract: An objective lens driver includes: a lens holder, for holding an objective lens; a first focusing coil, for moving one end of the lens holder in the focusing direction; a second focusing coil, for moving the other end of the lens holder in the focusing direction; a tracking coil assembly, for moving the lens holder in the tracking direction; and flexible members, which includes a first flexible member pair, for feeding a current to the first focusing foil, a second flexible member pair, for feeding a current to the second focusing coil, and a third flexible member pair, for feeding a current to the tracking coil assembly, wherein the lens holder is flexibly supported at a driver main body by the flexible members, and wherein the flexible members are arranged in a plurality of columns on both ends of the lens holder.
    Type: Application
    Filed: January 23, 2007
    Publication date: July 26, 2007
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Susumu Uragami, Shinji Tanaka, Junichi Yoshimoto, Shinji Shuto, Hideki Toyoda