Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1979-05-02
1981-01-27
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
350314, G01J 136
Patent
active
042477638
ABSTRACT:
A radiation filter for use in a range determining system to reduce the effects of radiation falling on the edges of a radiation detector used in the system to a greater extent than radiation falling on the central portion of the detector.
REFERENCES:
patent: 3367254 (1968-02-01), Townsley
patent: 3499711 (1970-03-01), Argyle
patent: 3796497 (1974-03-01), Mathisen et al.
patent: 4158131 (1979-06-01), Probst
Honeywell Inc.
Nelms David C.
Ungemach Charles J.
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