Patent ID: 8459830
Filing Date: 2013-06-11
Classification: F21V,F21Y

Abstract:
1. A light output device, comprising: a light exit aperture; a curved mirror; a plurality of longitudinally extending first light sources; a plurality of longitudinally extending second light sources; said plurality of first light sources and second light sources positioned such that light emitted by both said first light sources and said second light sources is directed towards said curved mirror and away from said light exit aperture; a partly transparent mirror projecting from said curved mirror, said partly transparent mirror positioned substantially between a first row of said first light sources and a second row of said second light source; and a collimator arranged at the light exit aperture for at least partly collimating the light from the first and second light sources; wherein, during operation, substantially all the light from the first and second light sources is incident on the partly transparent mirror, the partly transparent mirror reflecting part of the light emitted by the first light source and transmitting part of the light emitted by the second light source, and vice versa, such that the light from the first light source is superimposed onto the light from the second light source following reflection/transmission at the partly transparent mirror, wherein the collimator receives reflected light from both said first and second light sources through the light exit aperture.