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    • 70. 发明授权
    • Edge-lit backlight having light recycling cavity with concave transflector
    • 具有凹透镜的光回收腔的边缘照明背光
    • US07537374B2
    • 2009-05-26
    • US11466628
    • 2006-08-23
    • Craig R. SchardtD. Scott ThompsonJohn A. WheatleyDong Lu
    • Craig R. SchardtD. Scott ThompsonJohn A. WheatleyDong Lu
    • F21S13/14
    • G02B6/0055G02B6/0021G02B6/0031G02B6/0096H01L33/54H01L2224/48091H01L2224/48247H01L2224/48257H01L2924/1815H01L2924/00014
    • An edge-lit backlight having a light recycling cavity with concave transflector is disclosed. The edge-lit backlight has an output area and includes a back reflector facing the output area of the backlight. The backlight further includes a transflector that partially transmits and partially reflects incident light, the transflector being shaped to form a concave structure facing the back reflector to provide one or more recycling cavities therebetween, where the one or more recycling cavities substantially fill the output area of the backlight. The backlight further includes at least one light source positioned adjacent a first edge of the backlight. The at least one light source is operable to inject light into the one or more recycling cavities through an input surface of the one or more recycling cavities, where the input surface is substantially orthogonal to the output area, and where the at least one concave structure converges with the back reflector in a direction distal from the input surface.
    • 公开了具有凹透镜的光回收腔的边缘照明背光。 边缘照明背光源具有输出区域,并且包括面向背光源的输出区域的后反射器。 该背光还包括半透射反射器,其部分地透射并部分地反射入射光,透射反射器被成形为形成面向后反射器的凹形结构,以在其间提供一个或多个再循环腔,其中一个或多个再循环腔基本上填充 背光。 背光还包括邻近背光源的第一边缘定位的至少一个光源。 所述至少一个光源可操作以通过所述一个或多个再循环腔的输入表面将光注入所述一个或多个再循环空腔中,其中所述输入表面基本上与所述输出区域正交,并且其中所述至少一个凹形结构 与背反射器在远离输入表面的方向会聚。