Patent ID: 8318329
Filing Date: 2012-11-27
Classification: C23C,F24S,G02B,Y02E

Abstract:
1. A radiation-selective absorber coating ( 20 ) for an absorber tube ( 13 ) of a parabolic collector ( 10 ), said radiation-selective absorber coating ( 20 ) comprising a reflective layer ( 21 ) that reflects in an infrared range, at least one absorption layer ( 22 ) arranged above the reflective layer ( 21 ), and an antireflection layer ( 23 ) arranged above said at least one absorption layer ( 22 ), said reflective layer ( 21 ) being arranged on at least two barrier layers ( 24 a ) and ( 24 b ); wherein said at least two barrier layers comprise a first barrier layer ( wherein said second barrier layer ( wherein said first barrier layer ( wherein said at least one absorption layer (