Driving apparatus, lens barrel and camera

Details Driving apparatus, lens barrel and camera Driving apparatus, lens barrel and camera

2011-05-03

2011-05-03

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

With support

C359S811000

Reexamination Certificate

active

07936525

ABSTRACT:
A driving apparatus of the present invention comprises: a lead screw which rotationally drives; and a follower section to hold a driven member L and to rectilinearly move based on rotation of the lead screw. The follower section comprises a first tooth and a second tooth that faced a side portion of the lead screw and are opposite to each other and a third tooth provided in a position different from those of the first tooth and the second tooth. When the follower section rectilinearly moves based on the rotation of the lead screw, power is transferred with the lead screw and the first tooth being engaged with each other, and the lead screw is in a non-contact state with the second tooth and the third tooth.

REFERENCES:
patent: 5748394 (1998-05-01), Shimazaki et al.
patent: 2002/0093629 (2002-07-01), Watanabe
patent: 4-141611 (1992-05-01), None
patent: 8-248284 (1996-09-01), None
patent: 2004-205556 (2004-07-01), None
Extended European Search Report, mailed Jul. 1, 2008, issued in corresponding European Patent Application No. 08101533.1-1240.

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