Cooling for CMOS Sensors

Improvements in CMOS Sensor technology have resulted in increased readout speed and better image quality. Breakthrough technology has also increased image contrasts which paves the way for the next generation of digital inspection systems. The ability to rapidly provide high quality images makes CMOS Sensors useful in machine vision & learning applications as well as object detection & recognition. Examples of these applications are machine vision for robots & drones, optical character recognition, barcode readers, scanners, astronomical and satellite photography and the enhancement of radar images for weather forecasting. CMOS Sensors also enable capturing of high-resolution images in light spectrums that are not visible to the human eye, which is particularly useful in high-end scientific cameras. Nevertheless, CMOS sensor technology can be used for applications other than imaging, such as humidity and temperature sensors, X-ray detectors, micro-hotplates and sensors for fluid flow. Since higher temperatures affect image resolution, thermal protection is critical for CMOS Sensors. To prevent image quality from deteriorating, high temperature Peltier coolers (thermoelectric modules) help reduce the sensor’s temperature while maintaining an acceptable noise level. Active cooling systems that feature thermoelectric modules (TEMs) provide a thermal management solution to operate these critical devices within their ideal temperature range to ensure maximum performance.

Laird Thermal Systems’ HiTemp ET Series of thermoelectric modules are designed for the increased thermal demands of CMOS sensor applications. See application note on Thermoelectric-Cooling-for-CMOS-Sensors-Appnote

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