Patent ID: 6875510

Claim:
A structure for reflecting light, in any one of a fibrous form and a film form, having an optical function of at least one of reflection properties for a visible ray, an infrared ray and an ultraviolet ray, the structure comprising: a first material; and a second material having a different refractive index from that of the first material, wherein at least the first material has light transmittance in a cross section of the structure, wherein a group of a plurality of fine structures formed of the second material is surrounded by the first material, and arranged within the first material with regularity sufficient to express reflection functions of light based on diffraction and scattering actions, and wherein each of the fine structures has a predetermined cross sectional shape, and wherein, assuming that an incident direction of light is a y direction, a direction opposing the y direction, in which the group of the plurality of fine structures is formed, is an x direction, and a depth direction of the group of the plurality of fine structures is a z direction, the group of the plurality of fine structures forms a polygonal regular arrangement in an x-y plane within the first material.