Night Vision Active System

For surveillance operation at night or under unfavourable weather conditions, such as rain, fog, thin foliage, long distance in the all cases where any different surveillance methods are failed.

OPERATION PRINCIPLE

The operation of the DM-740 is based on the principle of laser illumination and selection of distance while any objects are invisible. A semiconductor laser radiates short pulses. Upon reaching an observed object every such pulse is reflected and received by the image converter tube, opened only during the time period when the reflected pulse is entering the device. Such design excludes the effects of backward scattering from particles of semitransparent atmosphere and ensures fast target recognition. The received optical signal is converted to electronic signal by Image Intensifier and transmitted to the eyepiece.Unlike radar systems which give a point image DM-740 provides with identification of objects under observation achieved through visualisation of the surroundings.A distance between the observer and an observed object is displayed by the DM-740 digital indicators.

Features:

• DM-740 can operate in two modes : passive and active mode

• The passive mode is used at the conditions of more or less transparent atmosphere under nature night lighting (starlight)

• The active mode is used at the bad visibility conditions, including, rain, snow, thin foliage, fog and for long distance

Specification

D-HANDY
D-220
D-41
D-80
DM-740