Optical pickup apparatus and optical disc apparatus

Details Optical pickup apparatus and optical disc apparatus Optical pickup apparatus and optical disc apparatus

2005-06-17

2009-11-10

Huber, Paul (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112120, C369S121000

Reexamination Certificate

active

07616548

ABSTRACT:
An optical pickup apparatus and an optical disc apparatus are adapted to raise the efficiency of utilization of the lasers of the apparatus for accurately detecting tracking errors by raising the intensity ratio of the beam of the 0-th order to the beams of the ±1st orders produced by splitting of the laser beam of the wavelength to be subjected to division by three. The optical pickup apparatus includes a light emitting section for emitting a first laser beam having wavelength λ1and a second laser beam having wavelength λ2different from the wavelength λ1.

REFERENCES:
patent: 2002/0027844 (2002-03-01), Furuhata et al.
patent: 2000-352621 (2000-12-01), None
patent: 2001-281432 (2001-10-01), None
patent: 2002-311219 (2002-10-01), None
patent: 2003-338076 (2003-11-01), None

Affiliated with

Also associated with

Rating

Optical pickup apparatus and optical disc apparatus 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 apparatus and optical disc apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical pickup apparatus and optical disc apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4053188