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COLOR EFFECT FILTERS

FE, FM, FS

The color effect filters are coated with interference filters on both sides. The filters let a certain range (a certain color) of light pass through while reflecting the remaining part. The color effect depends on the angle of incidence of the incident light. The filter edges (T50% values ) are specified +/- 5 nm for FS and +/- 10 nm for FE + FM. Usually, color effect filters are applied on Borofloat ® glass, other glasses on request.

Optical specification
FS type ± 5nm
FE type ± 10nm
FM type ± 10nm
Color effect filters are specified by the filter edge
(transmission 50% values)
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. humidity, 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