For improving high-speed CMOS sensor imaging quality

reducing image sensor dark-current and spatio-temporal noise，the design of high frame rate CMOS digital camera system cooling by semiconductor refrigerator is introduced in the article. For this camera cooling system

It is implemented that refrigeration quantity can be controlled by the designed integrative multilevel semiconductor refrigerator. The difference in temperature of the sensor cooling temperature to surroundings temperature can attain max 40 degree. FPN( Fixed Pattern spatial Noise) of dark current can be reduced 50%

The random spatio-temporal noise can be reduced 90%

image SNR (Signal Noise Ratio) can be increased 6 dB. The designed cooling camera system has such advantaged features that high density of integration

compact structure

high resolution and high frame rate

high SNR

wide dynamic range

good imaging quality.