Multi-channel recording/playback optics for laser diode arrays

Details Multi-channel recording/playback optics for laser diode arrays Multi-channel recording/playback optics for laser diode arrays

1983-02-07

1985-05-28

Richardson, Robert L.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369122, 358347, 358294, G11B 700, G11B 714, G02B 1308

Patent

active

045204713

ABSTRACT:
An optical record and playback system is described for use in a multi-channel data processing system. An optical head which includes a laser diode array comprises a collection objective, an anamorphic beam expander and a focusing lens. The optical head collects the laser beams emitted by the diode array, expands the beam cross-section to form circular beams and focuses the beams to diffraction limited spots.

REFERENCES:
patent: 3396344 (1968-08-01), Broom
patent: 4051528 (1977-09-01), Takeda et al.
patent: 4222071 (1980-09-01), Bell et al.
patent: 4272651 (1981-06-01), Yoshida et al.
patent: 4298974 (1981-11-01), Tsunoda et al.
patent: 4301527 (1981-11-01), Tsunoda et al.
patent: 4333173 (1982-06-01), Yonezawa et al.
patent: 4397527 (1983-08-01), Geyer

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