OPTICAL SHEET, SURFACE LIGHT SOURCE DEVICE, AND TRANSMISSIVE DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical sheet including a fly's eye lens and capable of exhibiting excellent optical functions by having light-collecting performance, light-diffusion performance and visibility of light source images in common, and being stably manufactured.

SOLUTION: The optical sheet 40 includes a sheet-shaped body section 45, a plurality of first unit shaped elements 50 arranged on one side 46 of the body section and forming a fly's eye lens, and a plurality of second unit shaped elements 55 arranged on the one side of the body section and extending parallel to one direction over a sheet surface of the body section. The first unit shaped elements are arranged at intervals on the one side of the body section. The second unit shaped elements are arranged between the first unit shaped elements on the one side of the body section.

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