VIS / NIR Single Layer Anti-Reflection (SAR)
400 nm ≤ λ ≤ 2.0 µm
Single-Layer Magnesium Fluoride (MgF2) is the most common anti-reflection coating. It is a hard, durable coating that reduces surface reflectance of BK7 from approximately 4% to less than 1.3% at the specified center wavelength and normal incidence. Reflection losses for higher index materials such as sapphire are less than 0.5%. This coating is widely used in commercial optical products and other less demanding applications.
RMI STANDARD SPECIFICATIONS
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| Angle of Incidence: |
0º or 45º |
Reflectance:
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BK7:
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Unpolarized
R > 1.3% at 0º
R > 2.0% at 45º,
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Sapphire:
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R > 0.5% at 0º
R > 1.0% at 45º
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Single Layer Anti-Reflection reflectance curve sample for a design centered on 532 nm on BK7. The curve represents a general shape for this coating. RMI will design a custom coating for your application. Please call (303) 664-5000 to discuss your coating requirements.
Single Layer Anti-Reflection reflectance curve sample for a design centered on 532 nm on Sapphire. The curve represents a general shape for this coating. RMI will design a custom coating for your application. Please call (303) 664-5000 to discuss your coating requirements.
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