Dielectric NIR coated mirrors offer maximum reflection over a broad spectral range of a few 100 nm.
Low absorption is maintained with a dielectric multilayer coating using high transmittance glass material and can be resistant to a rapid change in high temperature. Their coating is more durable, making them easier to clean, and more resistant to laser damage.
Cold Mirror coatings can be used as a NIR filter by changing the angle of Incident.
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