Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1979-04-12
1981-01-20
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250209, 354 25, 354 31, 356 4, H01J 4014, G03B 310
Patent
active
042464765
ABSTRACT:
A radiation responsive detector arrangement for use with a range determination system. A first plurality of detector pairs are mounted to receive radiation from a lenslet array which produces a plurality of images of the exit pupil of a first objective lens whose f number is equal to or less than a predetermined value and a second plurality of detector pairs are mounted to receive radiation from the lenslet array which produces a plurality of images of the exit pupil of a second objective lens whose f number is greater than the predetermined value. Switch means is provided so as to use the outputs of the first plurality of detector pairs in the range determination system when the first objective lens is employed and to use the outputs of the second plurality of detector pairs in the range determination system when the second objective lens is employed.
REFERENCES:
patent: 3450018 (1969-06-01), John, Jr.
patent: 3680024 (1972-07-01), Tashiro et al.
patent: 4019049 (1977-04-01), Schulz
patent: 4060325 (1977-11-01), Nobusawa
patent: 4104651 (1978-08-01), Matsumoto et al.
Honeywell Inc.
Nelms David C.
Ungemach Charles J.
Westin Edward P.
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