Patents by Inventor Ryo KUWANO

Ryo KUWANO 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).

  • Lens apparatus and image pickup system including the same
    Patent number: 8643956
    Abstract: A lens apparatus includes a fixed lens barrel, a cam ring provided inside the barrel, lens units, and a holder for holding the lens units movable in optical-axis direction, the holder including a driver for driving at least one of the lens units in the optical-axis direction, the holder supported movably in the optical-axis direction inside the cam ring, in which the holder includes cam followers, and the cam followers slidably engage with a cam groove of the cam ring and a straight groove of the barrel to determine a position of the holder in the optical-axis direction by rotation of the cam ring about optical axis, the holder includes a slide connector for electrically connecting to a contact provided slidably on the barrel through an opening penetrating the cam ring radially, and the driver is fed with power from the barrel side through the slide connector.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: February 4, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidenori Nakagawa, Ryo Kuwano
  • LENS APPARATUS AND IMAGE PICKUP SYSTEM INCLUDING THE SAME
    Publication number: 20120162781
    Abstract: A lens apparatus includes a fixed lens barrel, a cam ring provided inside the barrel, lens units, and a holder for holding the lens units movable in optical-axis direction, the holder including a driver for driving at least one of the lens units in the optical-axis direction, the holder supported movably in the optical-axis direction inside the cam ring, in which the holder includes cam followers, and the cam followers slidably engage with a cam groove of the cam ring and a straight groove of the barrel to determine a position of the holder in the optical-axis direction by rotation of the cam ring about optical axis, the holder includes a slide connector for electrically connecting to a contact provided slidably on the barrel through an opening penetrating the cam ring radially, and the driver is fed with power from the barrel side through the slide connector.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hidenori NAKAGAWA, Ryo KUWANO