The device is designed to observe objects in difficult weather conditions and conditions of reduced visibility. Also, the device is designed to detect optical systems in the field of view of the device, for example, hidden video surveillance systems, using the effect of retroreflection. The device sends laser radiation to the side where it is supposed to be a hidden camera, this radiation is reflected from the input lens of the hidden video camera and then falls into the receiver of the device, where the coordinates of the location of the hidden camera are calculated.