Cam mechanism for lens movement

Details Cam mechanism for lens movement Cam mechanism for lens movement

1996-06-27

1997-09-16

Gellner, Michael L.

Photography

Having variable focal length of camera objective

396 79, G03B 118

Patent

active

056690215

ABSTRACT:
A cam mechanism for moving a lens along its optical axis is provided with a cam groove and a cam follower. The cam groove and the cam follower have different curvatures, so that the contact area between the cam groove and the cam follower remains substantially constant within a range of relative positions of the groove and the cam follower.

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English language translation of the pertinent portions (i.e., p. 19, line 1 through p. 20, line 17) of JP63-88811.

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