Object lens actuator and disc drive using the same

Details Object lens actuator and disc drive using the same Object lens actuator and disc drive using the same

2011-07-05

2011-07-05

Cao, Allen T (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

Reexamination Certificate

active

07975275

ABSTRACT:
The present invention has an object to provide an object lens actuator that reduces the amplitude of vibration of an object lens related to a torsional vibration of a lens holder and to enable a disc drive using the same to record information on a disc at high speeds. The above object has been achieved by placing the thickest one of the four walls, which are in an envelope of two opening portions provided in the lens holder and which are perpendicular to a flat plate between the two opening portions, in a position which is opposite to the object lens with respect to the center line between a first support member and a second support member which resiliently support the lens holder therebetween and which is opposite to the object lens with respect to the flat plate.

REFERENCES:
patent: 6657944 (2003-12-01), Mohri et al.
patent: 7203136 (2007-04-01), Chong et al.
patent: 2001/0024407 (2001-09-01), Kunimatsu et al.
patent: 2002/0021631 (2002-02-01), Yokohama et al.
patent: 2003/0012119 (2003-01-01), Hori et al.
patent: 2004/0128679 (2004-07-01), Wade
patent: 8-194962 (1996-07-01), None

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