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:
Apr. 16, 2013
Filed:
Mar. 30, 2009
Norio Matsuda, Hanno, JP;
Yoshitaka Ono, Saitama, JP;
Norio Matsuda, Hanno, JP;
Yoshitaka Ono, Saitama, JP;
Pioneer Corporation, Kanagawa, JP;
Abstract
An optical pickup device, which can effectively prevent occurrence of trouble in recording and reproducing of information due to the fact that an objective lens for each optical beam is contaminated while not adding unnecessary parts and while reducing a cost, is provided. An optical pickup device (P) which performs the recording or reproducing of information in or from an optical disc () by using an optical beam (B) or (D), comprises: objective lenses () and () on which cleaning films which are activated by radiation of the optical beam (B) and clean their surfaces are formed in an optical path, and a control unit () for setting an optical path of the optical beam (B) in such a way that the optical beam (B) reflected by the optical disc () is radiated on the objective lens ().