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:
Nov. 09, 2004
Filed:
May. 24, 2001
Akira Miura, Saitama, JP;
Yoshiharu Suzuki, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
The optical pickup apparatus uses a semiconductor laser element integrated a first light emission source for emitting a first laser beam with a second light emission source for emitting a second laser beam, of which wavelength is different from that of the first laser beam. The optical pickup apparatus is constructed so that a first half mirror functional surface and a second half mirror functional surface are provided in a beam splitter to match an optical path in which the first laser beam passes through the first half mirror functional surface of the beam splitter and then is reflected at the second half mirror functional surface and again is emitted from the first half mirror functional surface to be directed toward a bifocal lens with an optical path in which the second laser beam is reflected at the first half mirror functional surface to be directed toward the bifocal lens