Double concave lens:
Double concave lenses have a negative focal length and are typically used to increase the divergence of aggregated light.
| Diameter (mm) | 14.7 |
|---|---|
| Coating specifications | AR@380-430nm |
| material | H-ZLAF3 |
| Curvature R1 (mm) | 20.259 |
| Curvature R2 (mm) | 13.98 |
| Effective focal length (mm) | 9.43 |
| Center thickness Tc (mm) | 2 |
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