Zoom lens driving apparatus

Optical: systems and elements – Lens – With variable magnification

Reexamination Certificate

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C359S694000, C359S700000

Reexamination Certificate

active

11092697

ABSTRACT:
A zoom lens driving apparatus achieves the object of driving multiple lens groups by a single motor and low production cost. When a first lens group, which includes a first lens, moves along guide rods, a leading cam of a leading member drives a leading pin of a follower, so that the follower moves a guide pin, and moves a second lens group, which includes a second lens, along the guide rods. The relative distance between the first lens group and the second lens group is controlled by the leading cam.

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patent: 5790908 (1998-08-01), Matsuda
patent: 6031998 (2000-02-01), Shono

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