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    • 9. 发明授权
    • Illuminating apparatus and display apparatus
    • 照明装置和显示装置
    • US08016450B2
    • 2011-09-13
    • US12539342
    • 2009-08-11
    • Shogo ShinkaiShigehiro YamakitaYasuyuki KudoTaku IshimoriEiji OhtaYutaka Muramoto
    • Shogo ShinkaiShigehiro YamakitaYasuyuki KudoTaku IshimoriEiji OhtaYutaka Muramoto
    • G09F13/04G09F13/08
    • G02F1/133606G02B3/0006G02B5/045G02F1/133603G02F2001/133607
    • An illuminating apparatus is provided and includes a plurality of point light sources in one plane and a first optical sheet and a second optical sheet overlapped in a region facing the plurality of point light sources. The plurality of point light sources are arranged in a first direction and also arranged in a second direction orthogonal to the first direction. The first optical sheet has a plurality of first three-dimensional structures extending in a direction parallel to the first direction and arranged in a direction parallel to the second direction. The second optical sheet has a plurality of second three-dimensional structures extending in a direction parallel to the second direction and arranged in a direction parallel to the first direction. Each of the second three-dimensional structures has a shape which generates a larger amount of return light from normal incident light as compared with the first three-dimensional structures.
    • 提供一种照明装置,在一个平面中包括多个点光源,并且在与多个点光源相对的区域中重叠的第一光学片和第二光学片。 多个点光源配置在与第一方向正交的第二方向上的第一方向上。 第一光学片具有沿平行于第一方向的方向延伸的多个第一三维结构,并且沿与第二方向平行的方向排列。 第二光学片具有在与第二方向平行的方向上延伸并沿与第一方向平行的方向设置的多个第二三维结构。 与第一三维结构相比,第二三维结构中的每一个具有从正常入射光产生更大量的返回光的形状。