Lens driving device

Optical: systems and elements – Lens – With support

Reexamination Certificate

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Reexamination Certificate

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07974024

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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International Search Report issued Feb. 26, 2008 in International (PCT) Application No. PCT/JP2007/071784, filed Nov. 9, 2007.
International Preliminary Report on Patentability issued Jun. 11, 2009 in International (PCT) Application No. PCT/JP2007/071784, filed Nov. 9, 2007.

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