GLASS TUBE WITH AN ANTIREFLECTIVE LAYER WITH A COMPOSITE MATERIAL, METHOD FOR MANUFACTURING THE GLASS TUBE, HEAT RECEIVER TUBE WITH THE GLASS TUBE AND SOLAR COLLECTOR WITH THE HEAT RECEIVER TUBE

摘要

A glass tube with a glass tube surface is provided, wherein the glass tube surface is at least partly covered by an anti-reflective layer for reducing a reflectivity for sunlight radiation of the glass tube surface in comparison to an uncovered glass tube surface. The anti-reflective layer comprises at least one composite material and the composite material comprises at least two component materials with different optical densities.