LIGHT GUIDE, LIGHTING DEVICE HAVING THE SAME, AND DISPLAY DEVICE

申请公布号：JP2013073736(A)

申请号：JP20110210815

申请日期：2011.09.27

申请公布日期：2013.04.22

申请人：

TOPPAN PRINTING CO LTD

发明人：OKUBO MASARU

分类号：F21S2/00;F21Y101/02;F21Y103/00;G02B6/00;G02F1/13357

主分类号：F21S2/00

摘要：<P>PROBLEM TO BE SOLVED: To provide a light guide with high luminance and effective for reduction of luminance unevenness, a lighting device, and a display device. <P>SOLUTION: A light deflection surface 7a for entering light of a light source and an emitting surface 7b for emitting the reflected light are formed on the light guide 7 by making both surfaces face each other. Cylindrical light deflection elements 18 are extended in a direction parallel with an incident surface 7L wherein the light source faces the light deflection surface 7a, and a plurality of light deflection elements 18 are arranged in a direction orthogonal to the incident surface 7L. The light deflection elements 18 are arranged so as to make their intervals become a dense state from a thin state from a region approaching the incident surface 7L in the direction orthogonal to the incident surface 7L to a region separated from the incident surface 7L. Light confinement lens extended in a direction orthogonal to the incident surface 7L is arranged on the emitting surface 7b in a direction parallel with the incident surface 7L. The light confinement lens 19 is formed in an approximately convex curved shape by means of a first region 19a wherein the top is made of a flat surface section or a curved surface section and a pair of second regions 19b made of a tapered flat surface section. <P>COPYRIGHT: (C)2013,JPO&INPIT

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