Apparatus for varying track spacing in multi-track optical recor

Details Apparatus for varying track spacing in multi-track optical recor Apparatus for varying track spacing in multi-track optical recor

1982-03-24

1984-05-15

Richardson, Robert L.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

358342, 369112, G11B 700

Patent

active

044492154

ABSTRACT:
A Dove prism is provided in a multiple beam optical disc record and playback system. In a multi-track optical system, the multiple spots formed in a multi-channel modulator are imaged on the record medium. The track-to-track spacing between adjacent tracks may be adjusted by rotating the Dove prism such that the angle formed between a line which passes through the center of the spots and the velocity vector of the disc is varied.

REFERENCES:
patent: 4097895 (1978-06-01), Spong
patent: 4209793 (1980-06-01), Ueno

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