Lens driving device

Details Lens driving device Lens driving device

1996-07-22

1998-05-05

Font, Frank G.

Optical: systems and elements

Lens

With support

359822, 359829, G02B 1500, G02B 1514

Patent

active

057483949

ABSTRACT:
A lens driving device includes a lens frame for holding a photographic lens; a guide member for guiding the lens frame in a direction of an optical axis of the lens; a lead screw for moving the lens frame in the optical axis direction; a drive source for rotating the lead screw; and a carriage for being in pressure contact with the lead screw and thereby for converting a rotational motion of the lead screw caused by the drive source to a linear motion in a direction parallel to the optical axis direction which is a moving direction of the guide member. When pressure contact points between the carriage and the lead screw are projected onto a plane perpendicular to a rotational axis of the lead screw, a projected image includes at least three pressure contact points.

REFERENCES:
patent: 5150260 (1992-09-01), Chigira
patent: 5177638 (1993-01-01), Emura et al.
patent: 5225941 (1993-07-01), Saito et al.
patent: 5363248 (1994-11-01), Horio
patent: 5377048 (1994-12-01), Tada et al.
patent: 5392159 (1995-02-01), Sasaki et al.

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