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:
Jan. 18, 2011
Filed:
Sep. 20, 2005
Akira Kurozuka, Osaka, JP;
Shin-ichi Kadowaki, Hyogo, JP;
Joji Anzai, Osaka, JP;
Osamu Kajino, Osaka, JP;
Akira Kurozuka, Osaka, JP;
Shin-ichi Kadowaki, Hyogo, JP;
Joji Anzai, Osaka, JP;
Osamu Kajino, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An optical disk apparatus according to the present invention includes: a light emission section for emitting laser light; an optical system for irradiating the optical disk medium with the laser light; and an aberration control section for controlling aberration of the laser light. In one embodiment, the aberration control section repeatedly switches between a plurality of aberration setting states in a focus lock-in operation. In another embodiment, the aberration control section simultaneously sets a plurality of aberration setting states in a focus lock-in operation. As a result, a plurality of aberration setting states can be allowed to substantially coexist within a single optical system.