Single laser information recording and focusing apparatus

Details Single laser information recording and focusing apparatus Single laser information recording and focusing apparatus

H - Electricity

04

N

352/32.2

H04N 5/781 (2006.01) G11B 7/09 (2006.01)

Patent

CA 1139440

ABSTRACT OF THE DISCLOSURE In an information recording apparatus for recording predetermined information on a recording medium by means of a laser beam, an optical system and a light detector are arranged for detecting a reflected version of the laser beam from the recording medium, whereby the focusing of the laser beam on the recording medium is automatically controlled.

325085

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