Radiation detection apparatus
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United States of America Patent
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May 2, 1989
Grant Date -
N/A
app pub date -
May 29, 1987
filing date -
May 29, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus for detecting radiation with a light-sensitive radiation receiving tube enclosed in a housing behind a transparent window, the invention including an auxiliary internal light source for testing the optical transmissive properties of the window and including a shielding member between the auxiliary light source and the radiation-receiving tube and a reflective mirror for directing light from the auxiliary light source toward the window for reflection off an external interface surface thereof toward the radiation-receiving tube.
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