Dai Nippon Printingco., Ltd.

Yuki Tobe

Junya Eguchi

Shubou Taya

Yoshinari Matsuda

Hiroyuki Morikane

Provided is an optical sheet which is excellent in anti-glare property, contrast, and image clarity, as well as capable of displaying a powerful moving image, wherein at least one surface of the optical sheet is an uneven surface, and the uneven surface satisfies following conditions (1) to (3), provided that Rzis a ten-point average roughness according to JIS B0601: 1994 with a cut-off value of 0.8 mm, Rzis a ten-point average roughness according to JIS B0601: 1994 with a cut-off value of 0.25 mm, and SD is a standard deviation of an arithmetic average roughness Raaccording to JIS B0601: 1994 with a cut-off value of 0.8 mm:0.300 &#x3bc;m&#x2264;&#x2264;0.650 &#x3bc;m&#x2003;&#x2003;(1)0.170 &#x3bc;m&#x2264;&#x2264;0.400 &#x3bc;m&#x2003;&#x2003;(2)SD&#x2264;0.015 &#x3bc;m&#x2003;&#x2003;(3).

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Okayama, Japan

Yuki Tobe