Patents by Inventor Koji Ugawa

Koji Ugawa 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 driver, camera module, imaging apparatus, and camera-equipped mobile terminal
    Patent number: 8228420
    Abstract: A lens driver includes: an imaging lens; a housing accommodating the lens; a spring member provided between the lens and the housing and holding the lens in the housing movably in the optical axis direction; a coil moving the lens in the optical axis direction; a magnet spaced apart from the coil and moving the lens in the optical axis direction; and a yoke fixed to the magnet and having an L-shaped cross-section when taken along a plane including the optical axis, wherein the yoke is disposed in such a way that an L-shaped corner side is located on the opposite side to the position of the lens where the reaction force of the spring member resulting from the movement of the lens is maximized.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: July 24, 2012
    Assignee: Sony Corporation
    Inventors: Koji Ugawa, Fujio Kanai
  • Lens driver, camera module, imaging apparatus, and camera-equipped mobile terminal
    Publication number: 20100079660
    Abstract: A lens driver includes: an imaging lens; a housing accommodating the lens; a spring member provided between the lens and the housing and holding the lens in the housing movably in the optical axis direction; a coil moving the lens in the optical axis direction; a magnet spaced apart from the coil and moving the lens in the optical axis direction; and a yoke fixed to the magnet and having an L-shaped cross-section when taken along a plane including the optical axis, wherein the yoke is disposed in such a way that an L-shaped corner side is located on the opposite side to the position of the lens where the reaction force of the spring member resulting from the movement of the lens is maximized.
    Type: Application
    Filed: September 25, 2009
    Publication date: April 1, 2010
    Applicant: Sony Corporation
    Inventors: Koji Ugawa, Fujio Kanai