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2. Resistive thermal detectors
2.1 Operating principle
A bolometer is a thermal detector that uses a thermistor as a thermometer material. The variation in resistance of each pixel is then measured to determine the infrared energy incident on each pixel. The result is an image that reflects the differences in temperature and emissivity present in the scene.
Complete modeling of a microbolometer is extremely complex, due to the large number of parameters involved and their mutual influences.
The simplest model does not take into account the Joule effect induced by the reading of the electrical resistance that makes up the bolometer. Such a simplified model does, however, make it possible to understand the effects of the various parameters available to the user....
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Resistive thermal detectors
Pyroelectric and ferroelectric sensors
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Directory
We need to distinguish between the small number of developers of uncooled infrared detection technologies and the large number of manufacturers of systems or cameras based on these detectors. This box gives an overview of the players involved in the development of uncooled detection technologies. These players supply the market with detectors or modules (detector + implementation electronics) for infrared systems.
...Statistical and economic data
To supplement this information with technical and economic data, we refer to market studies such as Maxtech International's "The world market for commercial & dual-use infrared imaging and infrared thermometry equipment" (volume IRW-C) ....
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