Camera viewfinder with framing plate illumination

Details Camera viewfinder with framing plate illumination Camera viewfinder with framing plate illumination

1994-11-22

1997-02-25

Blankenship, Howard B.

Photography

With viewfinder

G03B 1302

Patent

active

056063865

ABSTRACT:
A camera viewfinder illuminates a field of vision framing plate with light from at least one internal light source. The light from the at least one internal light source reflects off semi-transparent surfaces of a light transmissive component onto the field of vision framing plate. Additionally, a light collection window directs external light to the semi-transparent surfaces. The semitransparent surfaces pass the external light to the field of the vision framing plate. The intensity of light from the at least one internal light source can be varied based on a measured intensity of the external light to maintain a desired intensity of light on the field of vision framing plate.

REFERENCES:
patent: 4560264 (1985-12-01), Kitazawa et al.
patent: 5170204 (1992-12-01), Mukai et al.
patent: 5404193 (1995-04-01), Harada

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