The illuminating whose efficiency of the color video projection device which held down etendue small is good

摘要

Constitution In the illuminating, the 1st reflector element which has the 1st focus in the arc of the arc lamp is provided at least. The compound paraboloidal condenser (CPC) the 2nd focus of the reflector element is provided in the input end. To utilize in the projection device which held down etendue small it is possible the light which ejects from the optical accumulation vessel. Selective figure Figure 6