Tilt control mechanism

Details Tilt control mechanism Tilt control mechanism

1989-01-04

1992-06-23

Shepperd, John W.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 4432, G11B 7095, G11B 2121

Patent

active

051249731

ABSTRACT:
A tilt control mechanism for maintaining an optical axis of an information detecting beam, emitted from an optical pickup (1) carried by a linearly movable carriage (3), perpendicular to an information recording surface of an information recording disk. The tilt control mechanism includes a carrying member (7) connected to the carriage (3) so as to either be movable or rotatable in the direction perpendicular to the information recording surface, the pickup (1) being carried by the carrying member (7) so as to be rotatable about a fulcrum on the optical axis. A detection device detects the fluctuation in separation distance beween the objective lens (4) of the pickup (1) and the information recording surface so that the carrying member (7) can be displayed or rotated relative to the carriage (3) in accordance with the output of the detection device.

REFERENCES:
patent: 4607357 (1986-08-01), Okano
patent: 4634853 (1987-01-01), Kanamaru
patent: 4636628 (1987-01-01), Tsukai
patent: 4637004 (1987-01-01), Araki et al.
patent: 4694442 (1987-09-01), Gijzen et al.
patent: 4829508 (1989-05-01), Arita
patent: 4947481 (1990-08-01), Ikedo et al.

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