Optical head for a videodisc recorder/player

Details Optical head for a videodisc recorder/player Optical head for a videodisc recorder/player

1979-06-11

1981-11-17

Faber, Alan

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369112, 369122, 3581285, G11B 712

Patent

active

043015271

ABSTRACT:
An optical head comprising a lens disposed at a position for forming spot images of a semiconductor laser having a plurality of lasing points, in which beams from the semiconductor laser are focused on a disc on which predetermined information is recorded by light.

REFERENCES:
patent: 3866238 (1975-02-01), Monroe
patent: 3952148 (1976-04-01), Laub
patent: 3969575 (1976-07-01), Gerritsen
patent: 4027330 (1977-05-01), Maslowski
patent: 4051528 (1977-09-01), Takeda
patent: 4074314 (1978-02-01), Velzel
patent: 4085423 (1978-04-01), Tsunoda et al.
patent: 4115809 (1978-09-01), Ueno
patent: 4179708 (1979-12-01), Sheng
Sears et al., "University Physics", .COPYRGT.1955, Addison Wealey Publishing Co., Inc., pp. 767, 775.

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