Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1980-03-12
1982-03-02
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
354 25, 356 4, G01C 308, G03B 310
Patent
active
043179916
ABSTRACT:
An active auto focus system in which a beam of modulated energy is projected towards a subject to be focussed upon with the energy reflected therefrom directed towards a detector array. The detector array comprises a number of radiation responsive elements arranged in parallel rows and in a pattern which permits the reflected energy to impinge upon at least one detector in each of the rows simultaneously. The arrangement allows a digital type output indicative of the position of the reflected energy on the array and thus the position of the subject from the camera.
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Honeywell Inc.
Nelms David C.
Ungemach Charles J.
Westin Edward P.
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