TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Components: The glass exhibits a transmission of at least 85%, preferably at least 95% at 450-800 nm. The glass substrate comprises an alkali-containing glass, preferably a soda-lime glass. The glass has a residual reflection, which is minimum of 550-750 nm, preferably 600-700 nm.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The particles added are magnesium fluoride particles. The particles exhibit an average size of 1-100 nm, preferably 5-20 nm. The method uses silicon- and/or a titanium precursor. The sol-gel is based on metal oxides including aluminum oxide, zirconium oxide, 8 mole% of yttria-stabilized zirconia, cerium oxide, zinc aluminate, magnesium aluminate and/or titanium dioxide. The mass ratio of the particles and the oxidic precursor in the solution is 20:1, preferably 9:7. The refractive index of the porous anti-reflection layer at relative humidity of 90% is less than 0.02, which differs from the refractive index of the porous anti-reflection layer at relative humidity of 10%. The anti-reflection layer exhibits: a porosity of 5-50%, preferably 5-30%; a refractive index of less than 1.38, preferably less than 1.3; and a thickness of at least 100 nm. The anti-reflection layer comprises: magnesium fluoride particles. The amount of the particles having a refractive index of less than 1.5 in the anti-reflection layer is 30-95 mass-%, preferably 70-90 mass-%. The anti-reflection layer includes particles comprising the silicon and/or titanium oxide, which are embedded in a matrix made of crystalline titanium oxide. Preferred Method: A barrier layer (3) with a porosity of less than 10% is applied below the anti-reflection layer. The anti-reflection layer is baked at 300-1000 degrees C, preferably at 500-700 degrees C. The anti-reflection layer is applied on a glass substrate, where the glass substrate is pre-stressed, preferably during the baking of the anti-reflection layer. The particles are added as a suspension. The particles are formed as glass-, glass-ceramic particles and/or ceramic particles. The additional particles having a refractive index of greater than 1.5 are added, preferably titanium dioxide, zirconium oxide, zirconium oxide-yttrium, zirconium oxide-calcium, zirconium oxide-cerium, zirconium oxide-magnesium, indium oxide-stannum, tin dioxide-stibium, tin dioxide-fluorine, zinc oxide-aluminum, cerium oxide, cerium oxide-gadolinium, yttrium aluminum garnet and/or yttrium oxide-europium. The anti-reflection layer is formed as a porous, single anti-reflection layer. A barrier layer or an adhesion-promoting layer is arranged between the glass substrate and the anti-reflection layer. EXAMPLE - No suitable example given.