Lens actuator incorporated in optical information storage...

Details Lens actuator incorporated in optical information storage... Lens actuator incorporated in optical information storage...

2006-08-15

2006-08-15

Miller, Brian E. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C720S685000

Reexamination Certificate

active

07092321

ABSTRACT:
A lens actuator keeps an objective lens focused on a track in an information recording layer of an optical disc against fluctuation unavoidable for the optical disc, and has a lens holder, three electromagnetic actuators for moving and tilting the lens holder and three pairs of elastically deformable conductive connecting rods connected to both side surfaces of the lens holder for movably retaining the lens holder over a base plate; since two pairs of elastically deformable conductive connecting rods are symmetrically arranged on upper and lower sides of the remaining pair, the lens holder is smoothly tilted and moved in the radial direction of the optical disc without any tilt, whereby the lens actuator promptly and exactly cancels the fluctuation of the optical disc.

REFERENCES:
patent: 5748580 (1998-05-01), Matsui
patent: 6404728 (2002-06-01), Shinozuka et al.
patent: 6449229 (2002-09-01), Kim et al.
patent: 2002/0071376 (2002-06-01), Kimura et al.
patent: 287235 (1988-10-01), None
patent: H08-87762 (1996-04-01), None
patent: H10-21568 (1998-01-01), None
patent: H10-320804 (1998-12-01), None
patent: 11-306570 (1999-11-01), None
patent: 11306570 (1999-11-01), None
patent: 2000-30274 (2000-01-01), None
patent: 2000-149292 (2000-05-01), None
English Translation of JP 11306570 A.
Machine Translation of Sugiyama et al. (JP 2000-149292).

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