发明名称 |
OPTICAL SHEET, SURFACE LIGHT SOURCE DEVICE AND IMAGE DISPLAY DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To provide an optical sheet having excellent restoring property and scratch resistance even when the sheet has a convex optical unit, and requiring no protective sheet in a production process and during transportation, and to provide a surface light source device and an image display device having the optical sheet.SOLUTION: The optical sheet includes an optical function developing part comprising a plurality of convex optical units having ridgelines arrayed on one surface side of a transparent substrate. The optical function developing part is made of a cured product of an active energy ray-curable resin composition containing an acrylic resin and/or a methacrylic resin. A dent depth in an apex of each optical unit measured by a specified denting load is a specified value or more. When an acute angle formed by the ridgeline of the optical unit and an edge of the optical sheet is defined as a bias angle, an angle &thetas; of the smallest angle in the bias angles on the respective edges satisfies 2°≤&thetas;≤45°. |
申请公布号 |
JP2016001322(A) |
申请公布日期 |
2016.01.07 |
申请号 |
JP20150148791 |
申请日期 |
2015.07.28 |
申请人 |
DAINIPPON PRINTING CO LTD |
发明人 |
GOISHIBARA SATOSHI |
分类号 |
G02B5/02;F21S2/00;F21V5/00;F21V5/02;G02F1/13357;H01L51/50;H05B33/02;H05B33/14 |
主分类号 |
G02B5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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