Optical disc read/write apparatus

Details Optical disc read/write apparatus Optical disc read/write apparatus

1983-04-21

1985-10-29

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250578, 369 44, G01J 120

Patent

active

045502498

ABSTRACT:
A read/write system which reduces access time in optical disc apparatus is disclosed. The head includes an array of lenses which covers a substantial portion of the radius of the disc. Access of a particular disc track is achieved by deflection of the reading beam, rather than by any physical movement of the head. For read-out, the array focuses light reflected from the disc onto a corresponding array of photodetectors.

REFERENCES:
patent: 3924063 (1975-12-01), Simons
patent: 4346292 (1982-08-01), Routt et al.
High Performance Optical Reader for Video Disc Substrates, Lurie et al, RCA Review, vol. 43, pp. 128-166, 3/82.

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