Balanced focus actuator for an optical storage system

Details Balanced focus actuator for an optical storage system Balanced focus actuator for an optical storage system

1994-09-23

1995-10-24

Psitos, Aristotelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4414, 359824, G11B 7135

Patent

active

054615984

ABSTRACT:
In a fine-focus actuator, the lens is coupled to a base by extension members. The extension members are rotatably coupled to the base and extend beyond the base. A counter-weight, positioned on the extension members, provides, in the presence of an external inertial force, a torque balancing the torque imposed on the lens holder by the external force. The counter-weight can include elements of the actuator such as magnets, etc.

REFERENCES:
patent: 4403316 (1983-09-01), van de Veerdonk
patent: 4516231 (1985-05-01), Michaelis
patent: 4766583 (1988-08-01), Oinoue et al.
patent: 4796245 (1989-01-01), van Alem et al.
patent: 4813033 (1989-03-01), Baasch
patent: 5111339 (1992-05-01), Hagiwara
English Translation of Japanese Kokai Patent Publication No. 58-211329, published Dec. 8, 1993 to Yuji Ikeda.
David Macaulay, "The Way Things Work", 1988, pp. 22-33, 35, 61, and 358.

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