Patents by Inventor Ryosuke Tsuru

Ryosuke Tsuru 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: 7233449
    Abstract: A lens moving mechanism which includes a moving lens for zooming or focusing; a lens holder holding the moving lens in a lens-barrel, and being supported freely movably into an optical axis direction of the moving lens; a guide shaft guiding the lens holder into the optical axis direction of the moving lens when the lens holder moves; a drive magnet attached to the lens holder; a drive coil fixed to the lens-barrel with at least part of the drive coil opposed to the drive magnet and giving an impelling force into the optical axis direction to the lens holder by being electrified; and a magnetic body fixed to the lens-barrel and located to oppose to the drive magnet on an opposite side of the drive magnet with at least a part of the drive coil put between the magnetic body and the drive magnet, and attracting the drive magnet.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: June 19, 2007
    Assignee: Sony Corporation
    Inventors: Ryoji Suemori, Ryosuke Tsuru
  • Publication number: 20070019307
    Abstract: A lens moving mechanism which includes a moving lens for zooming or focusing; a lens holder holding the moving lens in a lens-barrel, and being supported freely movably into an optical axis direction of the moving lens; a guide shaft guiding the lens holder into the optical axis direction of the moving lens when the lens holder moves; a drive magnet attached to the lens holder; a drive coil fixed to the lens-barrel with at least part of the drive coil opposed to the drive magnet and giving an impelling force into the optical axis direction to the lens holder by being electrified; and a magnetic body fixed to the lens-barrel and located to oppose to the drive magnet on an opposite side of the drive magnet with at least a part of the drive coil put between the magnetic body and the drive magnet, and attracting the drive magnet.
    Type: Application
    Filed: July 13, 2006
    Publication date: January 25, 2007
    Applicant: Sony Corporation
    Inventors: Ryoji Suemori, Ryosuke Tsuru
  • Patent number: 6351445
    Abstract: A sliding base 7 is supported over main guide shaft 27 and auxiliary guide shaft 28, and has first and second bearings 31 and 32 supported on the main guide shaft 27, and a third bearing 33 supported on the auxiliary guide shaft 28. The third bearing 33 has a fulcrum P3 thereof positioned on a straight line L1 connecting a middle point P4 connecting fulcrums P1 and P2 of the first and second bearings 31 and 32, and a center of gravity G1 of the sliding base 7 supporting an optical block 5 and objective lens drive 6 thereon. Thus, sliding base 7 can be presented from being vibrated.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: February 26, 2002
    Assignee: Sony Electronic (Singapore) PTE, Ltd.
    Inventors: Yeong Ling Ng, Ryosuke Tsuru
  • Patent number: 5708535
    Abstract: A lens mirror cylinder having first and second movable lens structures, constructed by assembling in a mirror cylinder a plurality of magnetic circuit means arranged on the outer periphery side of the second movable lens structure, guided so that it can move in the light axis direction of the lens, so as to face each other across the light axis, a first lens driving means for driving the first movable lens structure arranged at a position on the outer periphery side of the second movable lens structure in which the magnetic circuits are not arranged, and a lens diaphragm unit. By this construction, the space of the lens mirror cylinder can be effectively utilized, and a reduction of size of the lens mirror cylinder and the camera using the lens mirror cylinder is realized.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: January 13, 1998
    Assignee: Sony Corporation
    Inventors: Shinichi Orimo, Kenji Hirano, Toshifumi Takaoka, Kunio Nakazato, Ryosuke Tsuru