The Difference between Cooled & Uncooled Infrared Detector

Cooled detectors and uncooled infrared detectors are two types of detectors commonly used in modern infrared technology. They have some differences in principle, performance and application. This article will focus on the differences between the two types of detectors and explain their uses, advantages and disadvantages.

First of all, cooled detectors and uncooled infrared detectors are different in working principle. Cooled detectors use a cryocooler system to keep their detecting element at a very low temperature. This cooling system improves the sensitivity and resolution of the infrared detector. The working principle of uncooled detectors is mainly based on pyroelectricity, thermopile and microbolometer etc.

Second, cooled and uncooled infrared detectors also differ in performance. Cooled detectors have high sensitivity and resolution due to their ability to operate at very low temperatures. This allows them to more accurately measure the intensity of infrared radiation in low-light conditions. In comparison, the sensitivity and resolution of uncooled infrared detectors are relatively low. However, as technology advances, the performance of uncooled infrared detectors is gradually improving.

As for applications, cooled detectors are mainly used for high-precision infrared imaging and measurement. Due to its high sensitivity and resolution, refrigerated detectors are widely used in remote monitoring systems, meteorological monitoring, and flight vision enhancement. Due to the advantages of simple structure, small size and relatively low price, uncooled infrared detectors are widely used in security monitoring, drone payloads, assisted driving, fire rescue, outdoor night vision and other applications.

To sum up, there are obvious differences in principle, performance and application between cooled detectors and uncooled infrared detectors in infrared thermal imaging. Cooled detectors have high sensitivity and high resolution, and are suitable for high-precision infrared imaging and measurement; uncooled infrared detectors have the advantages of simple structure and low price, and are suitable for consumer electronics. Understanding these differences can help in choosing the right infrared detector for your specific needs.

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