Photo Emission Tech. Inc.is in the development and marketing of *Surface Quality Monitors to detect, measure, and monitor organic and/or inorganic, NON-VISIBLE thin layer surface contamination, very thin films, lubricant thickness, and coatings. * Solar Simulators for testing solar cells, testing the effect of exposure to solar radiation on various materials and finishes, and photochemistry and photobiology. *Ultraviolet Spot Curing Systems for curing adhesives, coatings, inks, etc.