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:
Jun. 28, 2005
Filed:
Jan. 29, 2001
Shinichi Takahashi, Tokorozawa, JP;
Hirokatsu Nagatake, Tokorozawa, JP;
Aki Yoshioka, Tokorozawa, JP;
Mitsutoshi Sugano, Tokorozawa, JP;
Ko Ishii, Tokorozawa, JP;
Makoto Kawamura, Tokorozawa, JP;
Akira Miura, Tokorozawa, JP;
Masayuki Koyama, Tokorozawa, JP;
Shinichi Takahashi, Tokorozawa, JP;
Hirokatsu Nagatake, Tokorozawa, JP;
Aki Yoshioka, Tokorozawa, JP;
Mitsutoshi Sugano, Tokorozawa, JP;
Ko Ishii, Tokorozawa, JP;
Makoto Kawamura, Tokorozawa, JP;
Akira Miura, Tokorozawa, JP;
Masayuki Koyama, Tokorozawa, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An optical pickup apparatus and a laser diode chip which can simplify and miniaturize a construction of the apparatus is provided for using a plurality of laser beams of different wavelengths. The laser diode chip is a chip for the optical pickup apparatus in which a plurality of light emitting portions for emitting the laser beams of the different wavelengths in the same emitting direction are formed on a substrate. Light emitting points of the plurality of light emitting portions are located at positions which are different in the emitting direction.