Patents by Inventor Sueyuki Oishi

Sueyuki Oishi 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).

  • Photographic camera with variable focal length
    Patent number: 5422699
    Abstract: This camera includes a control circuit 12 which calculates a movement amount for a focusing lens group Z.sub.1 of a zoom lens 11 based upon the photographic distance R as measured by a distance measurement device 13 and the focal length of the zoom lens 11 as detected by a focal length detection device 15, and a lens driving device 18 which then moves the focusing lens group Z.sub.1 according to this projection amount calculated by the control circuit 12. Thereby it is possible to compensate for focus deviation when zooming.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: June 6, 1995
    Assignee: Nikon Corporation
    Inventors: Shigemasa Sato, Masaru Muramatsu, Sueyuki Oishi, Atsushi Shibayama