Deep low temperature grading refrigeration and heat insulation system for space infrared remote sensor

TLDR: In this paper, a deep low temperature grading refrigeration and heat insulation system for a space infrared remote sensor, comprising a light shield (1), a lens assembly, a heat insulation rod, a focal plane refrigerator (2), a multi-layer heat insulation assembly (3), a cold shield assembly (4), a camera, a lens refrigerator, and a bearing cylinder, is proposed.

Abstract: The invention provides a deep low temperature grading refrigeration and heat insulation system for a space infrared remote sensor, comprising a light shield (1), a lens assembly, a heat insulation rod, a focal plane refrigerator (7), a multi-layer heat insulation assembly (8), a cold shield assembly (9), a cold shield refrigerator (10), a lens refrigerator (11), a heat insulation ring (12), a focal plane detector (13), a detector support structure (14), and a bearing cylinder (15). The lens refrigerator and the cold shield refrigerator respectively cool the lens assembly and the cold shield assembly enveloping the outside of the lens assembly to finally cool the optical lens to a deep low temperature. The focal plane refrigerator cools the focal plane detector assembly to cool the focal plane device to a deep low temperature. Compared with the prior art, the deep low temperature grading refrigeration and heat insulation system for the space infrared remote sensor realizes the deep lowtemperature grading refrigeration and heat insulation of all-optical system of the space infrared remote sensor, and effectively reduces the background noise of the system. The system can be widely applied to the detection of weak targets and the imaging of large temperature range and has good use value.