Optical pickup for use in an optical recording/reproducing appar

Details Optical pickup for use in an optical recording/reproducing appar Optical pickup for use in an optical recording/reproducing appar

1994-09-16

1997-03-04

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4417, 369 4422, G11B 709

Patent

active

056086962

ABSTRACT:
An optical pickup includes a movable unit supported in such a manner that the movable unit can move in tracking directions as well as in focusing directions. The movable unit has a laser unit including an objective lens, a reflecting mechanism, a light source, and a light detecting mechanism all constructed in an integral fashion. An axis of rotation of the movable unit intersects an optical axis of a light beam emitted by the laser unit. Also provided are two rotating mechanisms (for example, pivot pins or hinges) separately disposed in a direction along the axis of rotation, both rotating mechanisms having a common axis of rotation. Such an arrangement makes it possible to realize a small-sized, optical pickup having a driving mechanism suitable for high speed seeking. Such an optical pickup makes it possible to realize an optical recording/reproducing apparatus that can transfer data at a high rate of speed over a short access time.

REFERENCES:
patent: 4687296 (1987-08-01), Terayama et al.
patent: 4958336 (1990-09-01), Suzuki et al.
patent: 5005162 (1991-04-01), Mitsumori et al.
patent: 5062095 (1991-10-01), Horikawa et al.
patent: 5140471 (1992-08-01), Kasahara
patent: 5323378 (1994-06-01), Kim et al.

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