Anti-reflection coatings = AR filters
Anti-reflection coatings = anti-reflective glass = AR filter = anti-reflection filter = coatings which minimise the reflection on the lower boundary air/glass. In float glass, the reflection is reduced from approx. 4% to approx. 0.5% per boundary surface. This is accompanied by an increase in transmission of approx. 7 %.
This image for the broadband anti-reflection in the visible area shows the very good colour neutrality in transmission. At the same time, the slightly violet-coloured reflection clearly illustrates the coating.
This type of filter is used for protective glass on Neodym YAG lasers with a wavelength of 1064 nm. The image clearly shows its high transparency; the coating can be clearly recognised by the pink reflection.
Glass types and sizes
There are anti-reflection coatings for larger wavelength ranges (broadband anti-reflection filters Type AR4) and for certain wavelengths (Type AR2 - specified wavelength).
The AR filters are offered in the following materials / thicknesses / sizes
In addition, we also provide even smaller filter sizes with less material thickness . We can cut the filters round as well as in any other shape – please see customised Glass Cutting Service.
You can find all technical data here:
Standard glass thicknesses
| Float glass | 2 mm | 3 mm | 4 mm | 5 mm | 6 mm |
| Borofloat | 1.1 mm | 2 mm | 3.3 mm | 5.5 mm | 6.5 mm |
| Clear glass | 2 mm | 3 mm | 4 mm | 5 mm | 6 mm |
Standard sizes
| minimum | in mm range depending on material |
| maximum | gross 1,150 x 850 mm / net 1,080 x 800 mm |
