Glass with a porous anti-reflective surface coating and method for producing the glass and use of such a glass

摘要

A glass (1), provided with a porous antireflective surface coating (2) based on SiO¶2¶ particles, is said to have particularly good optical properties with regard to a high degree of light transmission in the entire solar spectrum and a particularly high mechanical one Strength, in particular a particularly high mechanical abrasion resistance. For this purpose, the antireflective surface coating (2) based on SiO¶2¶ particles comprises two particle fractions according to the invention, the surface coating (2) comprising a first particle fraction with a predominant particle size of 3 to 13 nm and a second particle fraction with a predominant particle size of 20 up to 50 nm. To produce a glass (1) coated in this way, a glass substrate (4) is coated with a hybrid sol whose [SiO¶x¶ (OH) ¶y¶] ¶n¶ particles form a first fraction of particles with a first particle size of 3 to 13 nm and a second fraction of particles having a second particle size of 20 to 50 nm.