- Options of material: Optical Glasses，Laser Crystal，Fused Silica，Radiation Resistant Glasses，IR & UV Materials，Metal Materials
- Positive Focal Length
- Image can be real or virtual
A Bi-concave Lens consists of two inwardly curved surfaces and focal length is negative. It is often used to increase focal length and divergence of light. It can be used in Laser Beam Expanders, Optical Character Readers, Tolerances and Projection Systems. Boxin selects the preferred material, processing and coating in according to customers’ requirements. For details, please contact our sales team
| Materials: Optical Glasses,Laser Crystal,Fused Silica,Radiation Resistant Glasses,IR & UV Materials,Metal Materials,e.g.,SiO₂,CaF₂,BaF₂,ZnSe,ZnS, Ge,Si,Al₂O₃ etc. |
Radius Range (mm): R3～R∞ |
| Dimension Range (mm): Φ3 ～Φ1100 | Dimension Tolerance (mm): ±0.01 ～±0.2 |
| Thickness Tolerance (mm): ±0.01 ～±0.1 | Scratch & Dig: 10/5～80/50 |
| PV: λ/20～λ/Φ100 mm | Centration: 10″～5′(or Δt ≤0.06) |
| Coating: Customizable (For details, please refer to Boxin Optical Coating.) |
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Boxin equipped with globally advanced spherical processing equipment, in order to meet variety of product demands that from customers worldwide. In optical industry, Boxin earns good reputation for its high quality spherical products. |
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Boxin has been continuously upgrading its coating facilities. At present, Boxin has 10 sets of advanced local and foreign made coating machines and customize various optical coating layers according to customer inquiries. |
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