OPTICAL SHEET, BACKLIGHT UNIT AND DISPLAY USING SAME

摘要

PROBLEM TO BE SOLVED: To provide an optical sheet capable of uniforming and emitting light from a light source while controlling the diffusion range without increasing a portion emitted wastefully, and to provide a backlight unit and a display using the optical sheet.

SOLUTION: The optical sheet 10 used for controlling an illumination light path of a backlight unit for display has: light reflection parts 14 on regions including non-condensing surfaces according to lens parts 16; and light transmission parts 15 on regions other than the light reflection parts 14, respectively on the surface of a lenticular sheet 17 having a lens part 16 made by forming convex cylindrical lens groups in parallel and the surface of the opposite side to the lens parts 16. The light reflection parts 14 are arranged in a stripe shape having one-to-one correspondence with respective unit lenses 16 of convex cylindrical lenses so as to form convex parts on the surface opposite side to the lens parts 16.

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