Lens driving device
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United States of America Patent
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Jul 5, 2011
Grant Date -
Feb 18, 2010
app pub date -
Nov 9, 2007
filing date -
Nov 10, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A lens drive apparatus includes a base, a lens frame, a nut movable with the lens frame while being threadably engaged with a lead screw, a main guide shaft for guiding the lens frame along an optical axis, an auxiliary guide shaft for guiding the lens frame along the optical axis while inhibiting the lens frame from rotating, and a cover, arranged so as to oppose the base for mating with and securing the main guide shaft and auxiliary guide shaft. The lens frame has a lens holding part projecting out of the base and cover. The base and cover have a first positioning pin and a first positioning hole, which are provided near the main guide shaft, and a second positioning pin and a second positioning hole, which are provided at a position distanced from the main guide shaft. The foregoing can yield a lens drive apparatus having high optical performances, which can be assembled with a high precision.
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