Infrared Viewer Frequently Asked Questions

Power Technology, Inc.'s infrared viewers work by focusing the infrared light reflected by or emitted from a chosen subject onto the image tube. An electron image is generated in accordance with the incident intensity and the S-1 spectral sensitivity of the photocathode material. The IR viewer is powered via pushbutton switch. When powered, an internal 3V battery-based power supply generates the 16 to 18kV required to accelerate the electron image into the output phosphor screen. The fluorescent green light output (550nm) is observed via an adjustable eyepiece lens. Laser alignment & safety Near-IR viewers are ideal for applications involving the alignment of infrared laser beams or of optical components in near-IR systems. Forensics & art restoration Substances have different transmission and reflection properties when viewed under near-infrared illumination as compared to visible illumination. These near-IR viewers can be used to examine documents, records, engravings, paintings, etc. for hidden differences. (Please note that IR filters and IR light sources are required for this application.)