Patent ID: 9051771
Filing Date: 2015-06-09
Classification: B32B,E06B,G02F,H01L,H02S,Y02B,Y02E,Y10T

Abstract:
1. A sun protection device comprising a first structural layer of an opaque or only partially translucent material on an optically transparent dielectric layer or layer sequence, and a second structural layer of an opaque or only partially translucent material, wherein the first structural layer and the second structural layer are structured subject to formation of light passage openings or zones and light-impermeable or light-weakening zones, wherein the second structural layer on a side of the optically transparent layer or layer sequence is opposite the first structural layer and is joined with said optically transparent layer or layer sequence, and the first structural layer and the second structural layer are structured in such a manner that under a predetermined first angular range, which is defined in a reference plane orientated perpendicularly to the second structural layer, optical radiation incident on the second structural layer is blocked or weakened based on structural interaction of the first structural layer and the second structural layer and a proportion of optical radiation, which is incident on the second structural layer under a second angular range with respect to the reference plane, can pass the first structural layer and the second structural layer unhindered, wherein the light-impermeable or light-weakening zones of the first structural layer and of the second structural layer each form strips which run parallel relative to one another, said strips of the first structural layer being mutually offset relative to corresponding ones of the strips of the second structural layer, wherein the light-impermeable zones of the second structural layer are formed of solar cells, wherein straight connecting lines between upper edges facing one another of respectively nearest strips of the first structural layer and the second structural layer run in the reference plane starting from the first structural layer at an angle α to a surface normal to the first structural layer and the second structural layer, for which 0°≦α≦42° applies, wherein straight connecting lines between lower edges facing one another in each case of nearest strips of the first structural layer and the second structural layer in the reference plane starting from the first structural layer run under an angle β to a surface normal to the first structural layer and the second structural layer, for which −10°≦β≦15° applies, and wherein straight connecting lines between upper edges of the strips of the second structural layer and lower edges of the strips of the first structural layer in each case of nearest strips of the first structural layer and the second structural layer run in the reference plane starting from the first structural layer under an angle Υ to a surface normal to the first structural layer and the second structural layer, for which σ limit ≦Υ≦80° applies.