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1. Reduce Surface Aberration.
2. Customized Coating.
3. Increase numerical Aperture of Lens

It can eliminate Surface Aberration and improve the accuracy of focus and collimation of various Laser Application. Boxin selects the preferred material, process and Coating in according to customers’ requirement. 

General specifications

• Materials: colorless optical glass, laser crystal, fused silica, radiation resistant glass, ultraviolet and infrared materials, metal materials, such as SiO ₂, CaF ₂, BaF ₂, ZnSe, ZnS, Ge, Si, Al, Cu, etc.
• Appearance range (mm): Φ 10~ Φ four hundred and fifty
• Appearance tolerance (mm): ± 0.01~± 0.2
• Thickness tolerance (mm): ± 0.01~± 0.1
• Surface quality: 20/10~80/50
• Surface accuracy: 0.1 μ M-3 μ M
• Eccentricity: 30 "to 5" (or Δ T ≤ 0.02)
• Coating: Customized according to requirements (see Boxin Coating Process Type and Film Layer Introduction for details)