Lens driving device

Details Lens driving device Lens driving device

2006-12-21

2008-11-04

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Lens

With support

C359S822000, C359S823000

Reexamination Certificate

active

07446960

ABSTRACT:
A lens driving device which can improve the positional accuracy of a moving lens while realizing a low component count and saving space. In the lens driving device provided in a lens barrel, a lens moves along the optical axis. A guide shaft is fixed to a lens barrel case and has a male thread portion formed along the optical axis. A rotor, which is driven by a motor, has a female thread portion that is to be threadably engaged with the male thread portion. A lens holder holds the lens and moves the lens along the optical axis in response to rotation of the rotor. An urging spring urges the lens holding member onto the rotary member.

REFERENCES:
patent: 06-250070 (1994-09-01), None
patent: 10-20177 (1998-01-01), None
patent: 2004-94172 (2004-03-01), None

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