1 is now replaced by layer m which is drawn from a silicon titanium mixed solution with modified composition this solution has a silicon dioxide content of 11 0 g l and a titanium dioxide content of 5 5 g l the thus prepared m layer has a somewhat smaller index of refraction when compared with m due to the relatively low titanium content the following are now selected as drawing speeds for the individual layers m t m t s v 540 262 345 206 500 mm min wherein an optical filter is obtained with a reflection characteristic according to fig9 which differs from the filter of example 1 essentially only by the changed residual reflection in the visible region other properties of the filter correspond to those of example 1 the filter according to the invention but with blue violet color of residual reflection is produced with the process and also the individual layers according to example 1 but with the following drawing speeds for m t m t s v 525 247 302 194 470 mm min in this way a filter is obtained with a reflection characteristic corresponding to fig1 except for the modified color impression of the residual reflection the other properties of the filter correspond to those of embodiment examples 1 and 2 for the first time a coating is indicated by the invention which preferably produces an antireflection coating in a color neutral manner for the glass air boundaries in the visible wavelength region 380 780 nm and at the same time considerably improves the uv protection properties of transparent substrates in the wavelength region of uv a.