IR Laser Radiation Eye Protector

Abstract

Eye protection equipment has been developed that makes possible safe, unobstructed viewing in environments of potential eye damage due to ir laser radiation. The viewing window consists of a 3 mm water sheet contained within Lucite panes. The water absorbs virtually all the radiation at all wavelengths in the ir>1.9 μ. A 3μ laser beam from a continuous HF laser at a power level of 15 W and a heat flux of 400 W/cm2 for 20 sec produced a depression in the beamward Lucite window pane but did not penetrate to the water.