Principle of night vision device:
(1) With a special lens, the infrared rays emitted by objects in the field of view can be gathered together.
(2) The phased array on the infrared detector element can scan and converge the light. The detector elements can produce very detailed temperature patterns, called temperature spectra. In about 1/30 of a second, the detector array can acquire temperature information and make a temperature spectrum. This information is obtained from thousands of detection points in the field of view of the detector array.
