OPTICAL SHEET, SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical sheet which shows desired optical characteristics and excellent abrasion resistance and can be manufactured inexpensively.

SOLUTION: An optical sheet 40 comprises a sheet-like body part 42 and a plurality of unit optical elements 45 arranged on one surface 42a of the body part. Each unit optical element 45 has a main part arranged on one surface of the body part 50 and a tip part 55 which is arranged on a part of the body part 50 and forms a top part 46a most separated from the body part of the unit optical element. The main part is formed using a resin material having thermoplasticity, and the tip part is formed by curing a second resin material having ionizing radiation curability.

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