OPTICAL ELEMENT WINDOW MATERIAL FITTING SOLAR SHADING DEVICE AND BUILDING

摘要

The optical body includes an optical layer provided with an uneven surface on its surface and a wavelength selective reflection layer provided on the uneven surface. The wavelength selective reflection layer transmits light other than a specific wavelength band while selectively reflecting the light of a specific wavelength band. The uneven surface includes a plurality of first structures extending in a first direction in a surface of the optical layer and a plurality of second structures extending in a second direction in the surface of the optical layer and provided so as to be spaced apart from each other, And the second direction intersect.