| 摘要 |
OPTICAL BODY, WALL MEMBER, FITTING, SOLAR SHADING DEVICE. OF THE DISCLOSUREAn optical body includes a substrate having a concave-convex surface, a reflecting layer formed on the concave-convex surface, and an optical layer formed on the reflecting layer to embed the concave-convex surface, wherein the reflecting layer directionally reflects light, the concave-convex surface is made up of a plurality of triangular pillars arrayed in a one-dimensional pattern, and the triangular pillar has an apex angle a and a slope angle J3, the apex angle a and the slope angle ß satisfying a formula (1) or (2) given below:30 p 4.5a - 285 (70 a 5 80) n(1)30 5_ p -1.5a + 195 (80 a 5 100) n(2)Figure 4A |
