An LED-array light source comprises an LED-array and a light-transmitting member disposed thereon. The light-transmitting member has a pair of opposed major surface for receiving and emitting output light emitted from the LED-array. A plurality of a first reflectors are formed on a light emitting surface...http://www.google.de/patents/US5639158?utm_source=gb-gplus-sharePatent US5639158 - Led-array light source
