DUAL-SIDED FILM WITH COMPOUND PRISMS
    13.
    发明申请
    DUAL-SIDED FILM WITH COMPOUND PRISMS 审中-公开
    双面胶片与化合物

    公开(公告)号:US20160161663A1

    公开(公告)日:2016-06-09

    申请号:US15043838

    申请日:2016-02-15

    Abstract: Dual-sided optical films have extended prisms formed in one major surface, and extended lenslets formed in an opposite major surface. Some or all of the prisms are compound prisms, in which the two inclined surfaces of each compound prism each include a tip portion, a base portion, and an intermediate portion disposed between the tip portion and the base portion, the intermediate and tip portions forming a concave shape and the intermediate and base portions forming a convex shape, or vice versa. When obliquely incident light, e.g. from a light guide, is incident on the prism side of the film, an output beam emerges from the lenslet side of the film. The output beam has an intensity distribution with a sharp left beam edge and a sharp right beam edge, these beam edges having 10%-to-90% transition angles of no more than 7, 6, 5, 4, 3, or 2 degrees.

    Abstract translation: 双面光学膜具有形成在一个主表面上的延伸棱镜,并且在相对的主表面上形成延伸的小透镜。 一些或全部棱镜是复合棱镜,其中每个复合棱镜的两个倾斜表面各自包括尖端部分,基部部分和设置在尖端部分和基部之间的中间部分,中间部分和顶端部分形成 凹形,中间和底部形成凸形,反之亦然。 当倾斜入射光,例如 从光导入射到膜的棱镜侧,输出光束从胶片的小透镜侧出射。 输出光束具有锋利的左光束边缘和锋利的右光束边缘的强度分布,这些光束边缘具有不超过7,6,5,4,3或2度的10%至90%的转变角度 。

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