Calculation of a Lens for a Small-Size Infrared Camera

Thermal imaging units have a wide area of application. However, large dimensions and mass are their drawbacks. This work is aimed at the lens calculation for a small-size infrared camera with a probability of no less than 50% to detect objects at a distance of more than 500 m. A technique is considered for calculating a lens of the small-size infrared camera by means of optimization of structural parameters of the selected lens prototype. The optimization and also the calculation of tolerances for manufacturing the lens, its assembling and alignment are performed using the Zemax software. As a result, the lens structure is obtained that (in addition to small dimensions) has the hi-tech construction, which allows the sphere of application of thermal imaging units to be substantially broaden.

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