This device converts the invisible infrared radiation into a visible image. Visible light is not required, and light sources do not interfere with the image. It is not possible to use through glass surfaces.
Also known as a night vision device, enhances the visible spectrum of the light, a trace amount of light is needed. Unusable in intense light, charachterized by a noisy image, but work well through glass.
©Fercom Systems 2020