发明名称 |
OPTICAL SHEET, IMAGE SOURCE UNIT AND IMAGE DISPLAY DEVICE |
摘要 |
An object is to provide an optical sheet that keeps efficiency of light utilization high or prevents something bad from occurring in a screen, while having a light blocking effect. Included are a substrate layer; and an optical function layer that is layered on the substrate layer, and has a plurality of light transmission parts which are arranged in a row so as to be light-transmissive, and light absorption parts that are arranged between adjacent ones of the light transmission parts so as to be light-absorptive. A cross-sectional area of each of the light transmission parts to a total cross-sectional area of one of the light transmission parts and one of the light absorption parts which are adjacent to each other is 78.2% to 88.5%, or optical diffuse reflectance of the optical sheet in a light output surface side is 1.9% to 3.5%. |
申请公布号 |
US2016238863(A1) |
申请公布日期 |
2016.08.18 |
申请号 |
US201615041893 |
申请日期 |
2016.02.11 |
申请人 |
DAI NIPPON PRINTING CO., LTD. |
发明人 |
KASHIWAGI Tsuyoshi |
分类号 |
G02F1/1335;G02F1/1333 |
主分类号 |
G02F1/1335 |
代理机构 |
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代理人 |
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主权项 |
1. An optical sheet having a plurality of layers, comprising:
a substrate layer; and an optical function layer that is layered on one surface of the substrate layer, and has a plurality of light transmission parts which are arranged in a row along a surface of the substrate layer so as to be light-transmissive, and light absorption parts in a row, each of which is arranged between adjacent ones of the light transmission parts so as to be light-absorptive, wherein in a cross-section of the optical function layer in a layer thickness direction, a cross-sectional area of one of the light transmission parts to a total cross-sectional area of one of the light transmission parts and one of the light absorption parts which are adjacent to each other is 78.2% to 88.5%. |
地址 |
Tokyo-to JP |