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金屬反射鏡（鋁，銀，銅）
Metal coated Mirrors are usually coated with Al, Ag or Au and they are have different reflectivity in different wavelength rang. Kinds of material, size with metal coated are available from MT-Optics,Inc.
Specifications:
Material:--------------------------- -N-BK7, UV Fused silica etc.
Typical Diameter (Фmm):------ 10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 50.8, etc.
Diameter Tolerance: ----------- +/ -0.1mm
Thickness Tolerance: ----------- ±0.2mm
Clear Aperture: -------------------->80%
Surface Quality: ------------------ 60/40
Flatness: ----------------------------λ/4@633nm
Bevel: ------------------------------- <0.25mm x 45deg
Coating: ---------------------------- Polished and Metallic coating just on one surface
| Coating Types | Reflectivity |
| Protected Aluminum | Ravg > 87% from 400nm to 800nm |
| VIS Enhanced Aluminum | Ravg > 93% from 450nm to 750nm |
| UV Enhanced Aluminum | Ravg > 86% from 250nm to 400nm |
| Protected Silver | Ravg > 95% from 400nm to 20mm |
| Protected Gold | Ravg > 98% from 650nm to 16mm |
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Metallic reflective coatings are delicate and require care during cleaning. Clean and dry pressurized gas can be used to blow off loose particles, then clean, deionized water, a mild detergent can be used. Gentle cleaning with a swab is recommended
