UV-reflection filter

UV-reflecting filters are used for testing material ageing, for curing plastics and paint or for drying adhesives and inks.

Together with the customer, the URBB basic filter type was modified here to reflect the desired radiation from the sun and greatly reduce the heat component of the sunlight.

The UV-reflecting filter types are special reflectors that reflect the light used for curing plastics, e.g. in dental technology. Accordingly, the reflection colour is a distinct blue.

Glass types and sizes

The UV-reflection 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.

All technical data can be found here:

Technology

Standard glass thicknesses

Float glass2 mm3 mm4 mm5 mm6 mm
Borofloat1.1 mm2 mm3.3 mm5.5 mm6.5 mm
Clear glass2 mm3 mm4 mm5 mm6 mm

Standard sizes

minimumin mm range depending on material
maximumgross 1,150 x 850 mm / net 1,080 x 800 mm

Downloads

Spectral curve FE Red

Application

Testing material ageing (accelerated ageing)

Concentrated sunlight is used to accelerate material ageing. Using a defined number of mirrors, the sunlight is directed onto the material to be tested. To avoid heating up the materials inadmissibly due to the sunlight’s high IR content, the URBB filter only reflects the wavelength range of 310 - 550 nm. The exact wavelength range is determined in each case with the customer. This makes it possible to apply up to 20 times the sun's dose and to obtain correspondingly rapid information on light-induced material ageing.

Our standard UV-reflecting filters for material ageing

Filter typesReflection maximum 
URBBRmax >= 70 % at 250-350 nm     Broadband reflection/media/301
UR 350-0Rmax >= 96 % at 350 nm   also available for use below 45°/media/300
UR 260-0Rmax >= 93 % at 350 nm/media/299

Paint and plastics curing / drying

Selective radiation via reflection - radiation with UV light.

For radiation with UV light, e.g. for curing plastics or for drying adhesives and printing inks

UV-filters for curing and drying of paint and plastics

Filter typesReflection maximum 
URBBRmax >= 70 % at 250-350 nm     Broadband reflection/media/301
UR 350-0Rmax >= 96 % at 350 nm   also available for use below 45°/media/300
UR 260-0Rmax >= 93 % at 350 nm/media/299

An overview of all our optical filters for industry can be found here

All filters for industry 

Whitepaper

Whitepaper optical filters

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Whitepaper functional coatings

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