Optical head and recording and/or reproducing apparatus...

Details Optical head and recording and/or reproducing apparatus... Optical head and recording and/or reproducing apparatus...

2007-07-24

2007-07-24

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044120, C369S044230, C369S112050, C369S112280

Reexamination Certificate

active

10849158

ABSTRACT:
Disclosed is an optical head in which position adjustment of a photodetector light receiving surface or component parts may be simplified, production costs may be reduced and operational reliability may be improved. The optical head includes a light source22, radiating light of a preset wavelength, an objective lens27for condensing the outgoing light from the light source22on an optical disc2and for condensing the return light from the optical disc2, a beam splitter25for branching the optical path of the return light reflected by the optical disc2, and for collimating the branched return light so as to be parallel to the outgoing light from the light source22, a composite optical component including a splitting prism30arranged on a site of incidence of the branched return light for spatially splitting the return light, and a light receiving unit for receiving plural return light beams spatially split by the splitting prism30for producing focusing error signals.

REFERENCES:
patent: 5189655 (1993-02-01), Ogata et al.
patent: 5708644 (1998-01-01), Hasegawa
patent: 6072607 (2000-06-01), Tajiri et al.
patent: 6192020 (2001-02-01), Takasuka et al.
patent: 6529454 (2003-03-01), Asoma et al.
patent: 6542447 (2003-04-01), Matsuo et al.

Affiliated with

Also associated with

Rating

Optical head and recording and/or reproducing 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 head and recording and/or reproducing apparatus..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical head and recording and/or reproducing apparatus... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3722052