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    • 10. 发明授权
    • Uniform light directing film and method of making same
    • 均匀导光膜及其制作方法
    • US09164220B2
    • 2015-10-20
    • US13813572
    • 2011-08-01
    • Bryan V. HuntRobert M. EmmonsCorey D. Balts
    • Bryan V. HuntRobert M. EmmonsCorey D. Balts
    • G02B5/04F21V8/00
    • G02B6/0053G02B5/045G02B6/0001
    • Light directing film (100) is disclosed. The light directing film includes a structured major surface (110) that includes a plurality of microstructures (150) extending along a first direction (142) and a plurality of elevated portions (160) disposed on the plurality of microstructures. The number density of the elevated portions across the light directing film is D. Each elevated portion includes a leading edge (162) and a trailing edge (164) along the first direction. The light directing film can be divided into a plurality of same size and shape grid cells that form a continuous two-dimensional grid. The area of each grid cell is approximately 1/D. Each of at least 70% of the grid cells includes a single leading edge (162) of an elevated portion (160).
    • 公开了导光膜(100)。 导光膜包括结构化的主表面(110),其包括沿着第一方向(142)延伸的多个微结构(150)和设置在多个微结构上的多个升高部分(160)。 穿过导光膜的升高部分的数量密度为D.每个提升部分包括沿着第一方向的前缘(162)和后缘(164)。 导光膜可以分成形成连续二维网格的多个相同尺寸和形状的网格单元。 每个网格单元的面积约为1 / D。 至少70%的网格单元中的每一个包括升高部分(160)的单个前缘(162)。