A light source for examining leak detection sites in heating, ventilating, and air conditioning systems using a flourescent dye is described. The light source can include a parabolic reflector or a low voltage lamp....http://www.google.fr/patents/US5959306?utm_source=gb-gplus-shareBrevet US5959306 - Portable light source and system for use in leak detection
Portable light source and system for use in leak detection
