Patent ID: 8814380
Filing Date: 2014-08-26
Classification: F21Y,G02B,G03B

Abstract:
1. An LED light system for emitting substantially white light, the system comprising: a first dichroic element, the first dichroic element comprises a first dichroic surface having a first coating, the first coating being adapted to reflect over 95% of a first color and transmit over 95% of a second color, the first dichroic surface having a first side and a second side; a second dichroic element, the second dichroic element comprises a second dichroic surface having a second coating, the second coating being adapted to reflect over 95% of a third color and transmit 95% of a fourth color, the second dichroic surface having a third side and a fourth side; a first light channel, the first light channel including a first LED light source and a first light guide, the first LED light source being characterized by the first color, the first light guide being configured to project a first light from the first LED light source onto the first side at approximately 45 degrees angle; a second light channel, the second light channel including a second LED light source and a second light guide, the second LED light source being characterized by the second color, the second light channel being substantially perpendicular to the first light channel, the second light guide being configured to project a second light from the second LED light source onto the second side at approximately 45 degrees angle; a third light channel, the third light channel including a third LED light source and a third light guide, the third LED light source being characterized by the third color; a first relay optical element, the first relay optical element being adapted to transmit a combined light from the first dichroic element onto a predetermined location of the third side at approximately 45 degrees angle, the combined light being characterized by the fourth color, the combined light comprises a the first light reflected by the first side and the second light transmitted through the second side; and a second relay optical element for transmitting a light from the third light channel onto the fourth side at approximately 45 degrees angle.