发明名称 |
OPTICAL SHEET, METHOD FOR MANUFACTURING THE SAME, SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To provide an optical sheet and a method for manufacturing the sheet having cone-like projections, excellent optical characteristics and good reproducibility of the form of dies and avoiding such drawback that the tops of projections easily chip, and to provide a surface light source device and a display device. SOLUTION: The optical sheet 1 consists of a transparent base film 2 and a great number of cone-like projections 3 with the tops 4 each forming a part of a sphere and densely arranged on the film 2. The projection has 20 to 300 μm diameter L of the bottom, 5 to 200 μm height and the ratio r/L of the radius r of the sphere to the diameter L ranging from 0.05 to 0.4. |
申请公布号 |
JP2002148417(A) |
申请公布日期 |
2002.05.22 |
申请号 |
JP20000339956 |
申请日期 |
2000.11.08 |
申请人 |
DAINIPPON PRINTING CO LTD |
发明人 |
MAZAKI TADAHIRO;ARAKAWA FUMIHIRO |
分类号 |
G02B5/02;C08F2/46;C08J5/18;F21V8/00;G02F1/1335;G02F1/13357 |
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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