The development of a cryogenic integrated system with the working temperature of 100K
2016
In the infrared system, cooling down the optic components' temperature is a
better choice to decrease the background radiation and maximize the sensitivity. This
paper presented a 100K cryogenic optical system, for which an integrated designation
of mechanical cooler, flexible thermal link and optical bench was developed. The
whole infrared optic components which were assembled in a vacuum box were cooled
down to 100K by two mechanical coolers. Low thermal conductivity supports and
low emissivity multi-layers were used to reduce the cryogenic optical system's heat
loss. The experiment results showed that in about eight hours, the temperature of the
optical components reached 100K from room temperature, and the vibration from the
mechanical coolers nearly have no affection to the imaging process by using of
thermal links. Some experimental results of this cryogenic system will be discussed in
this paper.
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