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COLD LIGHT MIRRORS

DIELECTRIC MIRRORS

Cold-light reflectors are multi-coated, dielectrical mirrors with a high visible light reflection and high IR radiation transmission capabilities. Specially designed reflectors are also available for tubes and tube sections. The dichroic mirrors M1 and M3 are reflecting a part of the VIS-range and they are used for neutral dimming. They also used for a reflective covering of displays and monitors.

Optical specification
type Spectral range reflection
KR3 420nm - 650nm R avg. > 90%
M3 515nm ± 10nm R max. > 70%
M1 515nm ± 10nm R max. > 40%
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