Objective lens driving device capable of holding an objective le

Details Objective lens driving device capable of holding an objective le Objective lens driving device capable of holding an objective le

1995-06-23

1998-12-01

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 4422, 359824, G02B 702, G11B 2110

Patent

active

058448810

ABSTRACT:
An objective lens driving device includes drive coils mounted on one of a lens holder bearing an objective lens and a stationary member; magnets mounted on the other in such a manner that said drive coils are confronted with the magnets, and the lens holder is moved in a focusing direction and a tracking direction by application of current to the drive coils; and magnetic pieces arranged in magnetic circuits including the magnets, so that magnetic attraction forces acting on the magnetic pieces produce restoring forces two-dimensionally in the focusing direction and in the tracking direction to hold the objective lens at a neutral point. The magnetic pieces are so arranged that, at the neutral point, the drive coils are confronted straightly with the magnets.

REFERENCES:
patent: 4790628 (1988-12-01), Nanno et al.
patent: 4863240 (1989-09-01), Nakajima et al.
patent: 4998802 (1991-03-01), Kasuga et al.
patent: 5488603 (1996-01-01), Tomita et al.

Affiliated with

Also associated with

Rating

Objective lens driving device capable of holding an objective le does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Objective lens driving device capable of holding an objective le, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Objective lens driving device capable of holding an objective le will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2401052