A compact system for determining the presence and speed of an object/vehicle, and its application for Red Light Camera photo-enforcement is disclosed. The disclosed system uses accurate timing, laser radiation in the form of optical pulses, and the scattering effect of optical pulses from the road or...http://www.google.fr/patents/US7323987?utm_source=gb-gplus-shareBrevet US7323987 - Compact single lens laser system for object/vehicle presence and speed determination
Compact single lens laser system for object/vehicle presence and speed ...
