Camera viewfinding system

Details Camera viewfinding system Camera viewfinding system

1976-01-13

1977-09-06

O'Connor, Edna M.

354225, G03B 1306, G03B 1912

Patent

active

040472221

ABSTRACT:
A viewfinder system for a through-the-lens viewing camera which includes a focusing screen, a field lens, a prism, and an eyepiece is disclosed where the field lens is positionable in accordance with the position of the exit pupil of the objective lens and the eyepiece is positioned in accordance with the position of the field lens. Negative optical power is introduced between the field lens and the prism, and the prism design substantially reduces the size of the prism without sacrificing viewfinder brightness.

REFERENCES:
patent: 3601477 (1971-08-01), Miyazaki

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