Zoom finder drive mechanisms

Details Zoom finder drive mechanisms Zoom finder drive mechanisms

2006-10-03

2006-10-03

Perkey, W. B. (Department: 2851)

Photography

Having variable focal length of camera objective

Having direct viewfinder

C396S379000

Reexamination Certificate

active

07116901

ABSTRACT:
A zoom finder drive mechanism, driven only when taking a picture. When a lens barrel is in a collapsed position, the cam-follower pin of a rotary barrel does not abut at an end of a protrusion of a finder cam barrel such that a first and second movable finder lenses are idle. When taking a picture, the cam-follower of the rotary barrel is abutted at the end of the protrusion of the finder cam barrel such that the first and second movable finder lenses are driven.

REFERENCES:
patent: 5325140 (1994-06-01), Torikoshi et al.
patent: 5424793 (1995-06-01), Fukushima et al.
patent: 6381412 (2002-04-01), Ishito et al.
patent: 6973261 (2005-12-01), Nagae
patent: 7039311 (2006-05-01), Nomura
patent: 2004/0042092 (2004-03-01), Normura

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