Optical head device

Details Optical head device Optical head device

1984-12-05

1988-03-29

Faber, Alan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369112, 350500, G11B 7135

Patent

active

047349050

ABSTRACT:
An optical head device comprising a light source unit, a deflecting element for changing the direction of travel of a light beam emitted from the light source unit, and a condensing element for condensing the light beam on a recording medium. A movable portion is formed so that the deflecting element and the condensing element move substantially together with each other relative to the recording medium, and the deflecting element is designed such that the variation in direction of the emergent light beam from the movable portion caused by the rotative displacement of the movable portion with respect to at least one axis can be decreased.

REFERENCES:
patent: 3479108 (1969-11-01), Humphrey
patent: 3884548 (1975-05-01), Linder
patent: 3960443 (1976-06-01), Goshima
patent: 4198657 (1980-04-01), Kanamaru
patent: 4451913 (1984-05-01), Elliott
patent: 4453241 (1984-06-01), Veerdonk
patent: 4607356 (1986-08-01), Bricot

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