Double concave lens:
Double concave lenses have a negative focal length and are typically used to increase the divergence of aggregated light.
| Diameter (mm) | 11 |
|---|---|
| Coating specifications | AR@420-680nm |
| material | H-ZF5 |
| Curvature R1 (mm) | 16.36 |
| Curvature R2 (mm) | 11 |
| Effective focal length (mm) | 8.75 |
| Center thickness Tc (mm) | 1 |
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