Array type multistage semiconductor refrigeration method for large-target-surface detector

Abstract

An array type multistage semiconductor refrigeration device for a large-target-surface detector relates to the field of vacuum refrigeration packaging of photoelectric imaging detectors, solves the problems that an existing detector refrigerating device is complex in structure and large in size, further affects the refrigerating effect of the detector and the like, and comprises the large-target-surface detector, a cold plate, an array multistage semiconductor refrigerator and a heat sink, wherein the large-target-surface detector and the cold plate are bonded through high-thermal-conductivityepoxy resin glue, and the cold end of the array multistage semiconductor refrigerator and the cold plate are welded through low-temperature welding flux, and the hot end of the array multistage semiconductor refrigerator and the heat sink are welded through low-temperature welding flux. According to the invention, array type multistage semiconductor refrigeration adopts a thermoelectric refrigeration mode, and is free of noise, vibration and refrigerant; the multistage semiconductor can realize the requirement for large imaging temperature difference of the detector; the array type semiconductor can realize the requirement for large heat productivity of the detector; and the method can be well applied to the current large-target-surface (pixel 6K*6K) CMOS detector.

Description

technical field

[0001] The invention relates to the field of vacuum refrigeration packaging of photoelectric imaging detectors, in particular to a 6K large target surface detector array type multi-stage semiconductor refrigeration method. Background technique

[0002] In order to suppress the influence of detector dark current noise on imaging, it is necessary to cool the detector. Commonly used cooling methods include semiconductor refrigeration, Stirling refrigeration, pulse tube refrigeration, etc. Semiconductor refrigeration uses the working principle of the thermoelectric effect for cooling. Refrigeration has no noise, no vibration, no refrigerant, small size, light weight, reliable operation, easy operation, easy to adjust the cooling capacity, and has become the main means of detector cooling. Stirling refrigeration is a mechanical refrigerator driven by electricity. Its working principle is that the gas does work by adiabatic expansion, that is, it works according to...

Images