Optical information output device

Details Optical information output device Optical information output device

1982-07-02

1986-02-04

Faber, Alan

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 45, 250201, 250202, G11B 700

Patent

active

045690391

ABSTRACT:
An optical output device comprising a deflector having an electrooptic crystal element provided with an electrode and controlling an electric field applied to the electrode to vary the deflection angle of a light beam passing through the crystal and projecting the beam upon a predetermined position on a recording medium and separating the reflected light from the recording medium from the light beam or/and a variable focal length lens consisting of an electrooptic crystal and which uses a condenser for controlling the focal length of the lens by an electric field applied to the crystal and focusing the light beam to the recording medium, thereby reducing the number of mechanically movable parts of the device.

REFERENCES:
patent: 3932700 (1976-01-01), Snopko
patent: 3985952 (1976-10-01), Adler
patent: 4037929 (1977-07-01), Bricot
patent: 4124273 (1978-11-01), Huignard
patent: 4322837 (1982-03-01), Mickleson
patent: 4453801 (1984-06-01), Verber
Nikkei Electronics Publication of 10/13/80.

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