1. Reduce Surface Aberration
2. Adjust Astigmatism
3. Options of material: Optical Glasses，Laser Crystal，Fused Silica，Radiation Resistant Glasses，IR & UV Materials，Metal Materials

Bi-Convex Aspherical Lenses focus light path that scatters from the focus point back to focus point as much as possible. Boxin select the preferred material, process and Coating in according to customers’ requirement. 

General Specification

• Materials: Optical Glasses,Laser Crystal,Fused Silica,Radiation Resistant Glasses,IR & UV Materials,Metal Materials,e.g.,SiO₂,CaF₂,BaF₂,ZnSe,ZnS,
• Ge,Si,Al,Cu etc. 
• Dimension Range (mm): Φ10 ～Φ450
• Dimension Tolerance (mm): ±0.01 ～±0.2 
• Thickness Tolerance (mm): ±0.01 ～±0.1
• Scratch & Dig: 20/10～80/50 
• PV: 0.1μm～3μm
• Centration: 30″～5′(or Δt ≤0.02) 
• Coating: Customizable (For details, please refer to Boxin Optical Coating.)