Viewfinder optical arrangement of a camera

Details Viewfinder optical arrangement of a camera Viewfinder optical arrangement of a camera

1982-09-08

1985-06-25

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 55, 354166, 354219, H04N 904, G03B 1914

Patent

active

045257442

ABSTRACT:
A beam splitter extracts a light beam from light passing through a picture-taking lens system, and a viewfinder optical system directs the light beam to a viewfinder eyepiece. The optical system includes a focus screen, a master lens for imaging the light beam on the focus screen, a pentaroof prism disposed between the master lens and the focus screen, and an eyepiece for observing therethrough the image on the focus screen.

REFERENCES:
patent: 3440943 (1969-02-01), Sauer
patent: 3498198 (1970-03-01), Fujii
patent: 3945034 (1976-03-01), Suzuki
patent: 4381521 (1983-04-01), Iida

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