Flat concave lens:
Flat concave lenses are suitable for situations where one conjugate distance is more than five times the other conjugate distance. They introduce negative spherical aberration and can be used to balance the spherical aberration introduced by a single lens with positive focal length.
| Diameter (mm) | 26 |
|---|---|
| Coating specifications | AR@440-780nm |
| material | H-QF51 |
| Curvature R (mm) | 67.51 |
| Effective focal length (mm) | 115.31 |
| Center thickness Tc (mm) | 5.3 |
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