Patents by Inventor Toshiharu Alkawa

Toshiharu Alkawa 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).

  • Focus adjustment mechanism for a video or image pickup apparatus
    Publication number: 20010010557
    Abstract: A rail groove is provided on an outer peripheral portion of a focus adjusting ring. A lens seat, supporting an image pickup lens, is attached to an escutcheon forming a main body. A plurality of engaging protrusions, provided on a front surface of the escutcheon around the lens seat, engage with the rail groove. Cam surfaces, formed on the focus adjusting ring, are brought into contact with protrusions of a bracket which mounts an imaging element. The rotational motion of the focus adjusting ring is converted into a linear or progressive motion of a bracket by the cam surfaces.
    Type: Application
    Filed: January 31, 2001
    Publication date: August 2, 2001
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Masaomi Iiizumi, Toshiharu Alkawa