Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2005-07-05
2005-07-05
Patel, Gautam R. (Department: 2655)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S044320, C369S112020
Reexamination Certificate
active
06914865
ABSTRACT:
An optical pickup includes a light emitting unit, an object lens, and a correction unit. The object lens focuses a beam of light onto a recording surface of an optical disc. The correction unit has a light transmitting surface. A plurality of electrodes are arranged on a plurality of divided areas of the light transmitting surface. The correction unit corrects an aberration caused by a tilt of an optical axis of the beam of light relative to the recording surface of the recording disc by applying voltages to the electrodes. The applied voltages correspond to the tilt of the optical axis of the beam of light. The correction unit also changes phases of the beam of light passing through the divided areas of the light transmitting surface.
REFERENCES:
patent: 5140454 (1992-08-01), Shibaguchi
patent: 5436460 (1995-07-01), Stengl et al.
patent: 6141304 (2000-10-01), Ogasawara
patent: 6151154 (2000-11-01), Ogasawara et al.
patent: 6411576 (2002-06-01), Furukawa et al.
patent: 6430130 (2002-08-01), Furukawa
patent: 6532202 (2003-03-01), Wada et al.
patent: 6643244 (2003-11-01), Iwasaki
Morgan & Lewis & Bockius, LLP
Patel Gautam R.
Samsung Electro-Mechanics Co. Ltd.
LandOfFree
Device for correcting tilt aberration in an optical pickup... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for correcting tilt aberration in an optical pickup..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for correcting tilt aberration in an optical pickup... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3398329