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Title:
MOTOR UNIT, LENS DRIVING APPARATUS, LENS BARREL AND IMAGE PICKUP DEVICE
Document Type and Number:
Japanese Patent JP2008061295
Kind Code:
A
Abstract:

To provide a lens driving apparatus in which one of two moving lens groups moves with rotation of a lead screw, the other lens group moves with a prescribed play with respect to rotation of the lead screw and which can easily be assembled while a position relation of the desired lens group is secured and to provide a lens barrel having the lens driving apparatus.

In the lens driving apparatus, the lead screw has a first male screw part and a second male screw part different in diameters. A minor diameter of the first male screw part is formed to be larger than a major diameter of the second male screw part. A part where screwing with a female screw member is released is formed between the first male screw part and the second male screw part or between two end parts of the lead screw.


Inventors:
Funabashi, Akira
Okada, Naho
Application Number:
JP2006000231813
Publication Date:
March 13, 2008
Filing Date:
August 29, 2006
Export Citation:
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Assignee:
KONICA MINOLTA OPTO INC
International Classes:
H02K7/00; G02B7/04; H02K7/06; H02K37/24
Domestic Patent References:
JPH04134408A
JPH07245931A
JPH04317015A