The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2009
Filed:
Sep. 21, 2005
Midori Kanaya, Tokyo, JP;
Katsutoshi Sato, Tokyo, JP;
Kenji Yamamoto, Kanagawa, JP;
Noriaki Nishi, Kanagawa, JP;
Noriyuki Mori, Tokyo, JP;
Midori Kanaya, Tokyo, JP;
Katsutoshi Sato, Tokyo, JP;
Kenji Yamamoto, Kanagawa, JP;
Noriaki Nishi, Kanagawa, JP;
Noriyuki Mori, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An optical pickup includes a first optical system for collecting first laser light emitted from a first laser light source onto a first disk, and guiding reflected light from the first disk to a photoreceptor; a second optical system for collecting second laser light emitted from a second laser light source onto a second disk, and guiding reflected light from the second disk to a photoreceptor; a second objective lens for collecting the second laser light onto the second disk and receiving the reflected light from the second disk, the second objective lens being movable in a radial direction passing through the center of the second disk, and a first objective lens for collecting the first laser light onto the first disk and receiving the reflected light from the first disk, the first objective lens being disposed offset from the radial direction and adjacently to the second objective lens.