OPTICAL ELEMENT, WINDOW MATERIAL, FITTING, SOLAR SHADING DEVICE, AND BUILDING

摘要

An optical element is provided with an optical layer in which a concavo-convex surface is formed on the surface thereof, and a wavelength-selective reflection layer formed on the concavo-convex surface. The wavelength-selective reflection layer directionally reflects light having a specific wavelength band selectively, while transmitting light having wavelength bands other than the specific wavelength band. The concavo-convex surface is provided with a plurality of first structural elements that are extended in a first direction within the surface of the optical layer and a plurality of second structural elements that are extended in a second direction within the surface of the optical layer, and placed to be spaced apart from each other, with the first direction and the second direction intersecting with each other.

主权项

1. An optical element comprising:
an optical layer having a concavo-convex surface formed on one surface thereof; and a wavelength-selective reflection layer formed on the concavo-convex surface, wherein the wavelength-selective reflection layer directionally reflects a light ray having a specific wavelength band, while transmitting light rays having wavelength bands other than the specific wavelength band, and the concavo-convex surface is provided with a plurality of first structural elements that are extended in a first direction within the surface of the optical layer and a plurality of second structural elements that are extended in a second direction within the surface of the optical layer, and located so as to be spaced apart from one another, with the first direction and the second direction intersecting with each other.