Patents by Inventor Yasou Osada

Yasou Osada 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).

  • Publication number: 20030179682
    Abstract: The optical pickup device according to the present invention includes a feed screw (22) to move an optical pickup (11) having an objective lens (14) provided thereon radially of an optical disc D, a sliding member (24) provided slidably in relation to the optical pickup, and connected to the optical pickup (11) by a coil spring (25) which forces a shutter (47) in a direction of unmasking the objective lens, and a transmission (51) which connects the feed screw and sliding member to each other. As the feed screw is rotated, the sliding member moves the optical pickup radially of the optical disc D, and when the optical pickup has arrived at a position at the lead-in side of the optical disc D, the sliding member is further slid against the force of the coil spring to mask the shutter with the objective lens.
    Type: Application
    Filed: March 4, 2003
    Publication date: September 25, 2003
    Inventors: Yasou Osada, Yutaka Shimada