Camera having a liquid crystal focusing screen

Details Camera having a liquid crystal focusing screen Camera having a liquid crystal focusing screen

1982-10-06

1984-04-10

Gonzales, John

354200, G03B 700

Patent

active

044417985

ABSTRACT:
A camera which includes a liquid crystal focusing screen and an exposure control circuit that measures light reflected from the subject to be photographed after its passage through the liquid crystal screen is further provided with a circuit for compensating the light value determined by the exposure control circuit when operating voltage is not applied to the focusing screen so as to thereby compensate the amount of light measured through the screen when the nonapplication of operating voltage to the focusing screen causes the screen to transmit light therethrough less readily than when operating voltage is applied thereto.

REFERENCES:
patent: 3713369 (1973-01-01), Fuji
patent: 4140378 (1979-02-01), Suzuki et al.
patent: 4142786 (1979-03-01), Suzuki et al.
patent: 4208115 (1980-06-01), Proske

Affiliated with

Also associated with

Rating

Camera having a liquid crystal focusing screen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Camera having a liquid crystal focusing screen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera having a liquid crystal focusing screen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-890208