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Half Ball Lenses

 half ball lens specifications

Material BK7, Quartz, Sapphire, Optical glass, Customer-designated materials 
Diameter(Φ) 0.8mm~50mm
Radius(R) 0.4mm~25mm
Chamfer Specified by customer
Coating Specified by customer

  Low grade General grade High grade
Diameter tolerance +/-0.008mm +/-0.005mm +/-0.003mm
Surface quality 80-50 60-40 40-20
Surface accuracy 1.5λ 1/2λ
Central Thickness(Tc) +/-0.1 +/-0.05mm +/-0.01
Centration 5' 3' 30''