Patents by Inventor Takuro Miyata

Takuro Miyata 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).

  • Optical pickup and disc drive apparatus
    Patent number: 8116177
    Abstract: An objective-lens driving device includes a fixed block fixed to a moving base, a movable block having a lens holder configured to hold objective lenses, support springs configured to connect the fixed block and the movable block to each other, a focusing magnetic circuit including a first focusing coil, a second focusing coil, a first focusing magnet, and a second focusing magnet, and a tracking magnetic circuit. The first focusing coil is attached to the lens holder such that a first thrust-generating portion and a second thrust-generating portion are spaced from each other in a tangential direction. The second focusing coil is attached to the lens holder such that an axial direction of the second focusing coil coincides with the tangential direction. The first focusing magnet and the second focusing magnet are arranged in the tangential direction with the movable block disposed therebetween.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: February 14, 2012
    Assignee: Sony Corporation
    Inventor: Takuro Miyata
  • OPTICAL PICKUP AND DISC DRIVE APPARATUS
    Publication number: 20090103420
    Abstract: An objective-lens driving device includes a fixed block fixed to a moving base, a movable block having a lens holder configured to hold objective lenses, support springs configured to connect the fixed block and the movable block to each other, a focusing magnetic circuit including a first focusing coil, a second focusing coil, a first focusing magnet, and a second focusing magnet, and a tracking magnetic circuit. The first focusing coil is attached to the lens holder such that a first thrust-generating portion and a second thrust-generating portion are spaced from each other in a tangential direction. The second focusing coil is attached to the lens holder such that an axial direction of the second focusing coil coincides with the tangential direction. The first focusing magnet and the second focusing magnet are arranged in the tangential direction with the movable block disposed therebetween.
    Type: Application
    Filed: September 16, 2008
    Publication date: April 23, 2009
    Applicant: Sony Corporation
    Inventor: Takuro MIYATA