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    • 40. 发明授权
    • Enhanced light fixture with volumetric light scattering
    • 增强的灯具具有体积光散射
    • US08430548B1
    • 2013-04-30
    • US12839404
    • 2010-07-19
    • Timothy KellyTerence YeoZane Coleman
    • Timothy KellyTerence YeoZane Coleman
    • F21V7/04
    • G02B6/0041F21S8/088F21V1/00F21V2200/10F21V2200/20F21W2131/103F21Y2105/00F21Y2115/10G02B5/0242G02B5/0257G02B5/0284G02B6/0051G02B6/0055G02B27/0988
    • An enhanced light fixture containing a volumetric diffuser to control the spatial luminance uniformity and angular spread of light from the light fixture is disclosed. The volumetric diffuser provides increased spatial luminance uniformity and efficient control over the illuminance such that power reductions, reduced cost or reduced size may be achieved. The volumetric diffuser contains one or more regions of volumetric light scattering particles. The spread of illumination of light from a light emitting source can be efficiently controlled by using a thin, low cost, volumetric, diffuser to direct the light in the desired direction. This allows the reduction in number of light sources, a reduction in power requirements, or a more tailored illumination. When the volumetric diffuser is used in combination with a waveguide to extract light, the light is efficiently coupled out of the waveguide in a thin, planar surface. This transmissive diffuser can be coupled to a reflecting element such that the resulting combination is a light reflecting element with a desired light scattering profile.
    • 公开了一种增强的灯具,其包含用于控制来自灯具的光的空间亮度均匀性和角度扩展的体积扩散器。 体积扩散器提供增加的空间亮度均匀性和对照度的有效控制,使得可以实现功率降低,降低成本或减小尺寸。 体积扩散器包含一个或多个体积光散射颗粒的区域。 可以通过使用薄的,低成本的体积扩散器来有效地控制来自发光源的光的照射,以将光引导到期望的方向。 这允许减少光源的数量,降低功率需求,或者更适合照明。 当体积扩散器与波导组合使用以提取光时,光在薄的平坦表面中有效地耦合到波导外。 该透射扩散器可以耦合到反射元件,使得所得到的组合是具有期望的光散射分布的光反射元件。