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1. Reduce the total number of lens required in the Optical system.
2. Increase numerical Aperture of Lens.
3. Options of material: Optical Glasses，Laser Crystal，Fused Silica，Radiation Resistant Glasses，IR & UV Materials，Metal Materials

Plano Concave Aspherical Lenses can be used to focus rays, meanwhile it can adjust Aberration of the surface. Boxin selects the preferred material, process and Coating in according to customers’ requirement. For more information, please contact our sales team.

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.)