Optical pickup device

Details Optical pickup device Optical pickup device

1983-12-23

1986-11-25

Corbin, John K.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

35016217, 369109, G02B 532, G02B 518, G11B 713

Patent

active

046245260

ABSTRACT:
An optical pickup device to be used in a system for optically playing back recorded information comprises a diffraction grating or a hologram lens instead of a prism for directing a read-out light beam emitted by a light source to the surface of the recording medium and separating a reflection beam reflected by the surface of a recording medium from the read-out light beam. By the elimination of the prism, the size of the pickup device is substantially reduced and the production cost of the device is also reduced.

REFERENCES:
patent: 3614235 (1971-10-01), Munnerlyn
patent: 3732363 (1973-05-01), Glenn, Jr.
patent: 4253723 (1981-03-01), Kojima et al.
patent: 4312559 (1982-01-01), Kojima et al.
patent: 4440839 (1984-04-01), Mottier
patent: 4462095 (1984-07-01), Chen
patent: 4488042 (1984-12-01), Clay et al.
patent: 4497534 (1985-02-01), Sincerbox

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