| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-ray control film in which a heat-ray shielding rate changes according to the incident angle of the heat-ray.SOLUTION: A heat-ray control film comprises: a substrate including a heat-ray incident surface and a heat-ray emitting surface opposed to the heat-ray incident surface; a heat-ray shielding layer on the incident surface side formed on the heat-ray incident surface of the substrate and having plural linear parts and pitch parts between the plural linear parts; and a heat-ray shielding layer on the emitting surface side formed on the heat-ray emitting surface of the substrate and having plural linear parts and pitch parts between the plural linear parts. When a heat-ray source moves in a direction orthogonal to the linear parts of the heat-ray shielding layer on the incident surface side, the rate of the heat rays incident from the pitch parts of the heat-ray shielding layer on the incident surface side projecting on the linear parts of the heat-ray shielding layer on the emitting surface changes according to the angle of the heat rays incident upon the substrate. |
