| abstract |
The present invention relates to a light-transmitting structure having a surface uneven shape, and an area ratio of a flat surface area with an angle of 0 to 0.5 degrees with a plane of 0% or more and 5.8% or less, The convexity density is 0.0001 pieces/μm 2 or more and 0.05 pieces/μm 2 or less, the convex part area ratio is 5.5% or more and 50% or less, the skewness (skewness) Ssk is −0.5 or more and 1.1 or less, and the peak will be prominent. The load area ratio Smr1 at which the part is separated from the center part is 0% or more and 14.5% or less, and the arithmetic mean surface roughness Sa is 0.06 μm or more and 0.143 μm or less. |