Optical apparatus

Details Optical apparatus Optical apparatus

1996-12-30

1999-01-26

Perkey, W. B.

Photography

Having variable focal length of camera objective

Having focus operation

396 84, 396 90, 396379, G03B 300, G03B 1310, G03B 1700

Patent

active

058647198

ABSTRACT:
An optical apparatus comprises an association device which operates a viewfinder in association with a movement of an image forming optical system. After the movement of the image forming optical system, the association device severs the association of the viewfinder with respect to a movement of the image forming optical system in a direction different from that of the first-mentioned movement.

REFERENCES:
patent: 5036346 (1991-07-01), Hatamori et al.
patent: 5111227 (1992-05-01), Ogawa
patent: 5223873 (1993-06-01), Tsuboi
Patent abstracts of Japan No. JP 02 024613 A, published Mar. 30, 1990.

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