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    • 8. 发明授权
    • Lighting system with dichromatic surfaces
    • 具有二色表面的照明系统
    • US08226254B2
    • 2012-07-24
    • US12518293
    • 2007-12-11
    • Ramon Pascal Van GorkomPeter Alexander DuineHugo Johan Cornelissen
    • Ramon Pascal Van GorkomPeter Alexander DuineHugo Johan Cornelissen
    • F21V9/02
    • H01L33/508G02B6/0073G02F1/133603G02F1/133605G02F1/133617H01L33/44H01L33/60
    • A high efficiency lighting system (100) is described that has a small etendue. This can be used, for example, for backlighting a display device such as a liquid crystal display (LCD), projection displays, as well as for general lighting purposes. A portion of the light from a light emitting device die (101) falls onto a fluorescent material (105,106), such as phosphor. Dichroic mirrors (107,109) prevent the light generated by the fluorescent material to return to the light-emitting device. The mirrors may also provide collimation of the generated light and the remainder of the light from the light-emitting device. In this way a high efficiency system is realized because little or no generated light is absorbed and the generated light does not have to travel through a fluorescent material layer and thus has a high chance to go in the desired direction.
    • 描述了具有小的光密度的高效照明系统(100)。 这可以用于例如背光显示装置,例如液晶显示器(LCD),投影显示器以及用于一般的照明目的。 来自发光器件管芯(101)的光的一部分落在诸如磷光体的荧光材料(105,106)上。 分色镜(107,109)防止由荧光材料产生的光返回到发光装置。 反射镜还可以提供所产生的光和来自发光装置的其余光的准直。 以这种方式,由于很少或没有产生的光被吸收并且所产生的光不必穿过荧光材料层,因此具有很高的在所期望的方向上的机会,所以实现了高效率系统。