Method and apparatus for simultaneously evaluating different spe

Details Method and apparatus for simultaneously evaluating different spe Method and apparatus for simultaneously evaluating different spe

1981-04-20

1984-01-31

Perkey, William B.

354482, G03B 708, G03B 1503

Patent

active

044286546

ABSTRACT:
A method and an apparatus are disclosed for controlling exposure whereby scene radiation is generally simultaneously evaluated from one zone of the scene in a spectrally different manner from another zone thereof so as to define the exposure in accordance with selected frequencies from the selected zones.

REFERENCES:
patent: 2086791 (1937-07-01), Dresler
patent: 3500730 (1970-03-01), Matsubara et al.
patent: 3580149 (1971-05-01), Fujisawa
patent: 3709615 (1973-01-01), Blakeslee et al.
patent: 3780631 (1973-12-01), Schulman
patent: 3903413 (1975-09-01), Manning
patent: 4095241 (1978-06-01), Matsumoto
patent: 4160588 (1979-07-01), Beach
patent: 4315675 (1982-02-01), Johnson

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