Optical pickup device for supporting a plurality of types of...

Details Optical pickup device for supporting a plurality of types of... Optical pickup device for supporting a plurality of types of...

2004-06-22

2010-10-26

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S044410

Reexamination Certificate

active

07821901

ABSTRACT:
The optical pickup device includes a semiconductor laser for emitting laser light of 650 nm and 780 nm in wavelengths, a semiconductor laser for emitting laser light of 400 nm in wavelength, and an optical sensor which is provided in sequence with a first light receiving surface divided into four areas in a matrix manner, a second light receiving surface divided into four areas in a matrix manner, and a third light receiving surface divided at least into two areas aligned inline. Reflected light of three beams of 400 nm in wavelength and reflected light of three beams in 780 nm in wavelength are received on the first to third light receiving surfaces respectively, and a main beam of reflected light of 650 nm in wavelength is received on the first light receiving surface on one side out of the three light receiving surfaces.

REFERENCES:
patent: 5073888 (1991-12-01), Takahashi et al.
patent: 5736733 (1998-04-01), Shima et al.
patent: 5777973 (1998-07-01), Yoo et al.
patent: 6366543 (2002-04-01), Uemura et al.
patent: 6483787 (2002-11-01), Sugasawa et al.
patent: 6507009 (2003-01-01), Ohnishi et al.
patent: 6757224 (2004-06-01), Fukakusa et al.
patent: 6868055 (2005-03-01), Ueyama et al.
patent: 6930976 (2005-08-01), Ogata
patent: 7145859 (2006-12-01), Park et al.
patent: 7215609 (2007-05-01), Shimano et al.
patent: 2001/0026525 (2001-10-01), Takahashi
patent: 2002/0021652 (2002-02-01), Takasuka et al.
patent: 2002/0114229 (2002-08-01), Nishi
patent: 2003/0107980 (2003-06-01), Shih et al.
patent: 2003/0227858 (2003-12-01), Komma
patent: 2004/0156302 (2004-08-01), Nakata et al.
patent: 2004/0246834 (2004-12-01), Seong
patent: 9-288837 (1997-11-01), None
patent: 2001-209957 (2001-08-01), None
patent: 2002-123969 (2002-04-01), None
patent: 2002-245660 (2002-08-01), None
patent: 2003-91865 (2003-03-01), None

Affiliated with

Also associated with

Rating

Optical pickup device for supporting a plurality of types of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical pickup device for supporting a plurality of types of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical pickup device for supporting a plurality of types of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4224651