LENS SHEET, SURFACE LIGHT SOURCE UNIT AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a lens sheet which can make an image of a light emission part inconspicuous.SOLUTION: The lens sheet 30 has a body part 32 and a plurality of unit lenses 35 on the body part. A lens face angle θa1 between the outer contour 35a of the unit lens and a sheet face is made larger toward the end part 35b2 from the top part 35b1. The lens face angle α (°) in a reference point SP on the outer contour crossing a straight line SL in contact with the adjacent unit lens making angle 80° with the normal line, an angle β (°) between a reference line segment for connecting the reference point SP to the end part and the reference tangential line at the reference point and a lens face angle γ (°) at the end part form a prescribed relation.