Radiometric standard infrared detector
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United States of America Patent
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-
Jan 28, 1992
Grant Date -
N/A
app pub date -
Mar 8, 1991
filing date -
Mar 8, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A radiometric standard detector responsive to infrared energy comprises an indium antimonide photovoltaic generator, a first mirror and a vacuum dewar including a cold finger and a window. The first mirror and photovoltaic generator are positioned in the dewar to form an optical energy trap. The generator is on the cold finger. A second mirror is external to the dewar. The window, both mirrors and the generator are positioned so a beam of the infrared energy is incident on the window and a portion of the infrared energy incident on the window is reflected from the window to the second mirror, then back to the window.
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