Infrared Thermal Imaging Knowledge Ⅰ

1.Question: What are the two main types of infrared thermal imaging detectors?

Answer: They are divided into cooled infrared detectors and uncooled infrared detectors according to the different cooling methods.

2.Question: What are the main sensitive materials for uncooled infrared detectors?

Answer: The main sensitive materials for uncooled infrared detectors are vanadium oxide (VOx) and amorphous silicon (a-Si).

3.Question: What are the components of a cooled infrared detector in infrared thermal imaging?

Answer: The components of a cooled infrared detector mainly include chips, refrigeration units, and dewars.

4.Question: What is the purpose of cooling the chip in a cooled infrared detector?

Answer: Cooled infrared detectors need to be used with refrigeration units, and the main function of the refrigeration unit is to reduce the noise of the infrared chip.

5.Question: What are the common problems with cooled infrared detectors?

Answer: Ghosting, pixel stability, and flash lines are common problems with cooled infrared detectors.

6.Question: What are the common cooling methods for cooled infrared detectors?

Answer: The common cooling methods are Stirling cooling and Joule-Thomson cooling.

7.Question: What is the power supply range for the standard cooling core of infrared thermal imaging?

Answer: The power supply range for the standard cooling core of infrared thermal imaging is 24V±4V.

8.Question: In the user menu of an infrared thermal imaging device, the menu item “SC” represents shutter correction operation, the “B1” item represents scene correction operation, and a uniform surface needs to be covered in front of the lens. What does “NUC” stand for?

Answer: NUC stands for Non-uniformity correction, which is generally used for cameras with continuous zoom lenses.

9.Question: In order to achieve high frame rates, what mode is recommended for cooled infrared detectors?

Answer: The IWR mode is recommended for monitoring using cooled infrared detectors.

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