Finder system

Details Finder system Finder system

1998-05-27

2000-03-21

Perkey, W. B.

Photography

Having variable focal length of camera objective

Having focus operation

396 84, 396 94, 396106, 396141, 396147, 396148, G03B 1304, G03B 1316, G03B 1336

Patent

active

060411864

ABSTRACT:
A finder system including a first optical system and a second optical system apart from the first optical system by a certain base length. Based on an object distance obtained with use of an active or passive distance measuring device, degree of coincidence of images respectively formed by the first and second optical system and superimposed is varied so that superimposed images of an object that is located at the detected object distance coincide.

REFERENCES:
patent: 3367254 (1968-02-01), Townsley
patent: 3529528 (1970-09-01), Leitz
patent: 4983033 (1991-01-01), Suzuki
patent: 5258792 (1993-11-01), Suzuki et al.
patent: 5376984 (1994-12-01), Abe
patent: 5537184 (1996-07-01), Hasushita et al.
patent: 5692227 (1997-11-01), Yokota et al.

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