发明名称 TRAFFIC SIGNAL SYSTEMS
摘要 The present application relates to a traffic light including a light source from which propagates light rays and at least one layer of a structured brightness enhancement film and at least one layer of a light control film. The structured brightness enhancement film and the light control film are positioned adjacent to the light source such that a light ray emitted by the light source propagates through the brightness enhancement film and the light control film.
申请公布号 WO2009123932(A3) 申请公布日期 2010.01.07
申请号 WO2009US38613 申请日期 2009.03.27
申请人 3M INNOVATIVE PROPERTIES COMPANY;LIU, YUFENG 发明人 LIU, YUFENG
分类号 F21V9/16 主分类号 F21V9/16
代理机构 代理人
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