Laser diode and multibeam optical head using the laser diode

Details Laser diode and multibeam optical head using the laser diode Laser diode and multibeam optical head using the laser diode

1990-03-13

1992-09-01

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369121, 369112, G11B 700

Patent

active

051446162

ABSTRACT:
An optical information reading and writing system, comprising an optical recording medium and a multibeam optical head optically coupled to the optical recording medium. The optical recording medium has a plurality of uniformly spaced tracks in a radial direction of the medium for recording information thereon. The multibeam optical head is movable in the radial direction of the medium and includes a laser diode and an image forming optics. The laser diode has a plurality of nonuniformly spaced lasing elements in a straight line for generating a plurality of spaced laser beams. The image forming optics directs each laser beam onto a respective tracks of the optical recording medium. The spacing between the adjacent laser beams on the tracks corresponds to the spacing between the adjacent lasing elements.

REFERENCES:
patent: 4298974 (1981-11-01), Tsunoda et al.
patent: 4594719 (1986-06-01), Ackley

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