Patents by Inventor Keizou Yamada

Keizou Yamada 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).

  • Patent number: 6081304
    Abstract: The present invention provides an image display apparatus capable of easily displaying a bright image having a sufficiently great field of view. The image display apparatus comprises: an optical scanner provided on a bow portion of a spectacle frame and having a movable mirror for deflecting/scanning a beam modulated by a video signal; and a first curved mirror and a second curved mirror provided at right and left of the lens for successively reflecting and focusing the scan beam to be projected into a pupil of a user to form a scanned image on a retina.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: June 27, 2000
    Assignee: NEC Corporation
    Inventors: Toshihide Kuriyama, Keizou Yamada