Beam expansion and relay optics for laser diode array

Details Beam expansion and relay optics for laser diode array Beam expansion and relay optics for laser diode array

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

045204721

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, a relay lens and a focusing lens having a finite conjugate. 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. In operation the relay lens is used to image the lasing spots from the laser diode array in the conjugate plane of the finite conjugate focusing lens.

REFERENCES:
patent: 4397527 (1983-08-01), Geyer

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