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UV FILTERS

UV BLOCKING AND REFLECTION

We offer UV reflecting and UV absorbing filters by Prinz Optics. The UV mirrors permit transmission of visible radiation and are used to seperate UV zones. A UV filter edge is created through absorption by the various layers of oxide. A differentiation is made between steep-edge filters and those with gradually decreasing absorption of UV towards visible areas.

Optical specification
Type Angle Maximum of reflection
UR260-0 R max => 93% at 260nm
UR350-0 R max => 96% at 350nm
UR350-45 45° R max => 96% at 350nm
URBB R avg > 70% bei 250-400nm
Type Angle edge wavelength
UB2-AR 350nm±10nm
UB4 400nm±10nm
UB4-420 420nm±10nm
Stability of the coating
Solubility, resistant to water, weak alkaline solutions, alcohol and
alcoholic solvents, glass cleaner
Temperature stability short-term up to 450 °
Abrasion resistance according to DIN ISO 9211-3; severity level 1 / Crockmeter
Adhesive stability according to DIN ISO 9211-3; severity level 3 / Scotch tape test
Moisture resistance according to DIN ISO 9211-3; 40°C 90%-95% rel. dampness, 10 days
Coating defects
5/ C 5St x 1,0 (5/ CN´x A´) according to DIN ISO 10 110, part 7
referring to a surface of 100mm x 100mm C Indicator for surface errors
flaws < 0,2mm are ignored N´ the number of allowable coating defects
A´ the grade number
Scratches
5/ L 3St x 0,15mm (5/ LN´´x A´´) according to DIN ISO 10 110, part 7
referring to a surface of 100mm x 100mm L Indicator for scratches
defects < 0,05mm are ignored N´´the number of allowable scratches
A´´ the maximum tolerable width of the scratches in mm