Owner KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventors HENDRIKS, Bernardus

Pub. Number AU-A-2003265077

PCT Number PCT/IB03/04355

PCT Pub. Number WO2004/038707

Priority 02292625.7 23.10.02 EP

Filing date 1 October 2003

Wipo publication date 13 May 2004

G11B 007/09 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

G01M 011/00 Testing of optical apparatus

G11B 007/125 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - Optical beam sources therefor

G11B 007/135 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - Means for guiding the beam from source to record carrier or from record carrier to detector

G02B 027/00 Other optical systems