Real image finder optical system

Details Real image finder optical system Real image finder optical system

1994-06-03

1996-09-17

Nguyen, Thong

Optical: systems and elements

Compound lens system

With relay

359423, 359431, 354219, 354222, G02B 2300, G03B 1302

Patent

active

055574580

ABSTRACT:
A real image mode finder optical system includes an objective lens, a relay lens, and an eyepiece. A plurality of reflecting surfaces is arranged between the objective lens and the eyepiece. At least one of the reflecting surfaces is movable for deflecting an optical axis, and thereby an optical component disposed behind this reflecting surface is moved in accordance with the deflected optical axis. Thus, a variable angle is provided in a wide range from an eye level to a waist level.

REFERENCES:
patent: 3819255 (1974-06-01), Matui
patent: 4047222 (1977-09-01), Moskovich et al.
patent: 5194886 (1993-03-01), Mukai

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