Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1979-09-26
1981-03-03
Gellner, Michael L.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
250201, 354 31, 356 4, G03B 310, G01J 120, G01C 308
Patent
active
042537525
ABSTRACT:
A focus condition detecting device comprises an image forming optical system for forming a light image of an object on a fixed focal plane, an element for separating a pair of light beams from the light beam from the object, a first and a second photoelectric converting element array disposed in the pair of light beams, a first function generator for generating a first function output and a second function output, a first multiplier for putting out the sum of an output resulting from multiplying the first photoelectrical output of the first photoelectric converting element array by the first function output and an output of the second photoelectric converting element array by the second function output, a first integrator for integrating the output of the first multiplier, a second function generator for generating an output equivalent to an output resulting from differentiating one of the first photoelectrical output and the first function output, a second multiplier for multiplying the other of the first photoelectrical output and the first function output by the output of the second function generator, a second integrator for integrating the output of the second multiplier, and a divider for dividing the output of the first integrator by the output of the second integrator.
REFERENCES:
patent: 4189232 (1980-02-01), Asano et al.
Gellner Michael L.
Nippon Kogaku K.K.
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