Metal Coated Concave Mirror

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Product model table

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Material BK7
Dimension Tolerance +0/-0.2mm
Thickness Tolerance ±0.2mm
Surface Quality 60/40
Clear Aperture >90%
Flatness <λ/4@632.8nm
Centration <3 arc minutes
Coating Metal coating on curved surface,ground or inspection polished on flat surface
Enhanced Aluminum: Ravg>90%@400-700nm
Protected Aluminum: Ravg>87%@400-1200nm
Protected Silver: Ravg>95%@400-12000nm
Protected Gold: Ravg>98%@2000-12000nm
Damage Threshold >1J/cm2, 20ns, 20Hz, @1064nm