Device for detecting hot spots in the dark and procedure for night vision using this device.

摘要

The invention relates to a device for detecting hot spots in the dark. This device includes: - an infrared-ray detector emitting a signal when the variation in amplitude of the light waves which it receives exceeds a certain threshold; - downstream of the detector, a device for amplifying and interpreting the signals emitted by the detector and - upstream of the detector, a focusing device at the focal point of which is placed a modulator intended to isolate the characteristic frequencies of the hot spots. Application for the detection of the presence of objects, for example of vehicles, in the dark. IMAGE