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Specifications

Material Fused silica、Sapphire、Customer-designated materials 
Diameter(Φ) 2mm~1800mm
Radius(R) Specified by customer
  Low grade General grade High grade
Diameter tolerance +/-0.1 ±0.05mm ±0.01mm
Surface quality 40/20 20/10 10/5
Surface accuracy 1/4λ 1/4λ 1/10λ
Radius tolerance (ΔR) R/300 R/500 R/1000
Thickness tolerance +/-0.1 ±0.05mm ±0.01mm
Clear Aperture 90% 95% 100%
Centration 1' 30'' 15''
Coating Multilayer dielectric coating
Specified by customer
Multilayer dielectric coating
Specified by customer
Multilayer dielectric coating
Specified by customer