| 摘要 |
PROBLEM TO BE SOLVED: To provide a daylighting panel which effectively provides daylighting and allows for viewing outside therethrough from inside a room when used on a window.SOLUTION: A daylighting panel comprises a translucent tabular panel and a laminate adhered onto one surface of the panel, where the laminate comprises a translucent tabular base material layer, a light diffusion layer formed on top of the base material layer, and a translucent tabular protective layer laminated on the light diffusion layer on a side opposite the base material layer. The light diffusion layer comprises; light transmissive sections having trapezoidal cross-sections, each having a short upper base on the panel side and a long lower base on the protective layer side, and juxtaposed to allow transmission of light; and light diffusion sections formed between the light transmissive sections and having trapezoidal cross-sections, each having a long lower based on the panel side and a short upper base on the protective layer side, to allow incident light to be interfacially reflected. Each light transmissive section has a surface on the base material layer-side and an opposing surface that are parallel to each other. Interfaces between the light transmissive sections and light diffusion sections are sloped by more than 0 degree and no more than 20 degrees at any part thereof with respect to a line normal to the sheet surface.SELECTED DRAWING: Figure 2 |
