The infrared (IR) viewers use a material that converts the IR light into visible, allowing in this way to visualize infrared beams. The same happens with ultraviolet (UV) viewers.
These devices are usually like a spyglass, but we also offer CMOS / CCD cameras with the same effect, infrared or ultraviolet viewers. In this way, you will have an IR viewer providing an image, either on the camera's screen, on the PC or transfering it via video output. These cameras are a low cost good alternative to more expensive InGaAs systems.