Finder optical system

Details Finder optical system Finder optical system

1997-06-03

2000-07-11

Spyrou, Cassandra

Optical: systems and elements

Compound lens system

Telescope

359432, 359423, 359424, 359676, G02B 2300

Patent

active

060881569

ABSTRACT:
A finder optical system has an objective optical system for forming an intermediate image of an object and an eyepiece optical system, and is disposed independent of a photographing optical system. The objective optical system includes a reflecting member. A lens unit situated on the object side of the intermediate image is used as a correcting lens and moved along the optical axis. The finder optical system is thus corrected for diopter and satisfies a condition:

REFERENCES:
patent: 5117247 (1992-05-01), Nakai et al.
patent: 5132838 (1992-07-01), Ohshita
patent: 5144349 (1992-09-01), Kato et al.
patent: 5148308 (1992-09-01), Miyauchi
patent: 5392084 (1995-02-01), Kato
English abstract of Kikuchi Japanese laid open application No. 1-197727, Aug. 1989.

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