Post by etiosliva143 on Nov 11, 2011 5:20:56 GMT -5
Light emitted from an infrared laser diode is dangerous for direct viewing. The human eye has no heat receptors to warn the nervous system of exposure to the dangerous burning effect. An infrared sensitive camera or phosphor plate can assist in determining the optical path of an IR laser. While some lasers direct their collimated beams through infrared filters to eliminate this risk, manufacturing processes sometimes result in faulty or missing IR filters; thus it is safer to simply avoid direct eye exposure to all laser beams.