The alkali-free or alkali-poor glass body is provided with an adherent and anti-reflective
coating on at least one of its sides. The coating contains P2O5
and porous SiO2, preferably in a weight ratio of SiO2 to
P2O5 of 10:1 to 1:1. It has a rubbing resistance criterion
according to DIN 58196, intensity of testing H50, of 2 or better. The method of
providing the glass body with the coating includes dipping the glass body in a
H3PO4- and SiO2-containing volatile solution,
withdrawing the glass body at a speed of from 1 mm/s to 20 mm/s from the solution
and tempering the glass body at a temperature of under Tg of the glass.
