Objective lens driving apparatus, optical pickup, and...

Details Objective lens driving apparatus, optical pickup, and... Objective lens driving apparatus, optical pickup, and...

2011-06-28

2011-06-28

Haley, Joseph (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044140

Reexamination Certificate

active

07969829

ABSTRACT:
An objective lens driving device is provided with an objective lens; a lens holder for holding the objective lens; a pair of linear suspension springs for supporting the lens holder at each one end; a spring holder whereupon the other ends the springs are fixed; and a driving means for at least driving the objective lens in a tracking direction together with the lens holder. The linear suspension springs have narrowed or widened end compared with the other end in plan view from an optical axis direction. The lens holder is supported to be driven in the tracking direction, by having the cross point of the two lines, which pass the suspension spring ends on one side and are vertical to the extending directions of the linear suspension springs, respectively, at the driving center.

REFERENCES:
patent: 5319624 (1994-06-01), Yamasaki et al.
patent: 2005/0002287 (2005-01-01), Tanaka
patent: 2005/0105408 (2005-05-01), Kim et al.
patent: 5-205303 (1993-08-01), None
patent: 7-182670 (1995-07-01), None
patent: 11-86307 (1999-03-01), None
patent: 2000-20987 (2000-01-01), None
patent: 2001-126280 (2001-05-01), None
patent: 2003-123285 (2003-04-01), None
International Search Report for PCT/JP2007/055060, mailed May 22, 2007.

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