Radiation detection apparatus

Radiant energy – Invisible radiant energy responsive electric signalling – Ultraviolet light responsive means

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250578, 340401, G01J 142

Patent

active

039521966

ABSTRACT:
A device for determining that the optical surfaces through which radiation must travel from a hazardous area of radiation to a radiation detector are free from radiation absorbing material or radiation blocking material, the device including an enclosure for commonly housing both a source of and a detector of radiation while isolating the same from each other, preventing radiation transmission within the housing from the source to the detector, such enclosure defining a path for radiation emission from the source outwardly from the housing to a reflective surface or surfaces which surface or surfaces will redirect the radiation back to the detector through the same optical surfaces that radiation from the hazardous area must pass. The relective surface or surfaces may be integral with the enclosure or may be remotely located therefrom.

REFERENCES:
patent: 2096323 (1937-10-01), Gille
patent: 3105908 (1963-10-01), Burkhardt et al.
patent: 3387135 (1968-06-01), Engh
patent: 3510648 (1970-05-01), Leger
patent: 3654477 (1972-04-01), Benjamin
patent: 3700909 (1972-10-01), Murray
patent: 3774039 (1973-11-01), Price
patent: 3842263 (1974-10-01), Kornrumph et al.

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