Abstract
To decrease the performance difference between the actual microscanning
thermal imager and the theoretical value, a germanium lens (placed at a certain
angle between the infrared focal plane array and infrared lens) dip angle model of
flat optical component microscanning is introduced in this letter. The model is the
basis for choosing the dip angle of the germanium lens, which is used in the
microscanning thermal imager. In addition, the actual dip angle of the germanium
lens is chosen according to the model, the infrared lens parameters of the thermal
imager, and the germanium lens parameters of manufacture and installation. Only in
this manner can the optimal performance of the microscanning thermal imager based on
the flat optical component be obtained. Results of the experiments confirm the
accuracy of the conclusions above.
© 2011 Chinese Optics Letters
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