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:
Aug. 06, 2002
Filed:
Feb. 14, 2001
Ko Ishii, Tokorozawa, JP;
Shinichi Takahashi, Tokorozawa, JP;
Mitsutoshi Sugano, Tokorozawa, JP;
Hirokatsu Nagatake, Tokorozawa, JP;
Aki Yoshioka, Tokorozawa, JP;
Makoto Kawamura, Tokorozawa, JP;
Akira Miura, Tokorozawa, JP;
Masayuki Koyama, Tokorozawa, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An optical pickup apparatus includes a semiconductor laser device having a plurality of light emitting portions for emitting laser beams having different wavelengths on a substrate for emitting a laser beam from one of the plurality of light emitting portions in response to a light emitter selecting instruction in the same emitting direction. The laser beam emitted from the semiconductor laser device is converged by an objective lens and led to a recording surface of an optical disk, and the objective lens is moved to one of a plurality of different positions in a radial direction of the optical disk, corresponding to the selected light emitting portion.