Optical head for information recording apparatus

Details Optical head for information recording apparatus Optical head for information recording apparatus

1984-04-25

1987-02-03

McElheny, Jr., Donald

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 45, G11B 7095

Patent

active

046412964

ABSTRACT:
An optical head system for accurately detecting the relative positions of a spot of Gaussian beam and a recording track. The optical head system includes an objective lens adapted to be moved in a tracking direction for the tracking of the recording track by the beam spot, a light detector arranged stationary, and movable optical means arranged between the objective lens and the light detector such that the beam spot reflected from the recording track and projected on the light detector through the objective lens is held stationary on the light detector with respect to the movement of the objective lens.

REFERENCES:
patent: 4118736 (1978-10-01), Okada et al.
patent: 4296316 (1981-10-01), Tsuji et al.
patent: 4482986 (1984-11-01), Noda et al.

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