Lens barrel

Details Lens barrel Lens barrel

1998-08-26

1999-11-09

Perkey, W. B.

Photography

Having variable focal length of camera objective

Power zoom

396349, G03B 1704

Patent

active

059830336

ABSTRACT:
A lens barrel permits easier switching of an extending operation between a setup operating region, which begins at a collapsed position where the lens frame of the lens barrel is retracted, and a zooming region, and accordingly provides a simpler mechanism. In the setup operation, a setting gear is driven to extend a setting frame, a float key, and a moving frame so as to extend a first group zoom frame retained on a cam frame and a second lens holding frame from a collapsed position to a photographing standby position. In the zooming operation, a zoom gear is driven to rotationally drive the moving frame so as to adjust the first group zoom frame and the second lens holding frame.

REFERENCES:
patent: 5652922 (1997-07-01), Kohno

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