Optical recording/reproducing apparatus

Details Optical recording/reproducing apparatus Optical recording/reproducing apparatus

1984-01-30

1986-08-19

McElheny, Jr., Donald

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369110, 369121, G11B 708

Patent

active

046073590

ABSTRACT:
An optical recording/reproducing apparatus has a beam emitting device adapted to emit at least two light beams in directions at a minute angle to each other. The light beams are condensed by a condensing member onto slightly separated two points on a disk and reflected by the disk. The light beams from the disk are polarized to a prism by a polarizing device. The prism refracts the light beams from the polarizing device, thereby increasing the relative angle between the light beams. The refracted light beams are converged by a converging lens on a detector.

REFERENCES:
patent: 3876842 (1975-04-01), Bouwhuis
patent: 4423495 (1983-12-01), Musha et al.
patent: 4425636 (1984-01-01), Musha et al.
patent: 4453239 (1984-06-01), Musha et al.

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