Zoom viewfinder

Details Zoom viewfinder Zoom viewfinder

1992-02-24

1992-11-10

Dzierzynski, Paul M.

Optical: systems and elements

Lens

With variable magnification

359683, 354199, G02B 1500, G02B 7099

Patent

active

051629461

ABSTRACT:
A zoom viewfinder for forming a real image is used with a zoom camera lens system. The zoom camera lens system has an objective lens group. The zoom viewfinder comprises an objective lens system, an eyepiece lens system, and an element such as a mirror or a prism which is disposed between the objective lens system and the eyepiece lens system, for converting an observed image into an erect orthoscopic image. The objective lens system including an objective lens group. The objective lens group of the objective lens system and the objective lens group of the zoom camera lens system being movable in substantially aligned, juxtaposed relationship along respective optical axes which are parallel to each other.

REFERENCES:
patent: 4072971 (1978-02-01), Kuboshima
patent: 4945372 (1990-07-01), Higuchi et al.
patent: 4967219 (1990-10-01), Morisawa et al.

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