$54.50
Specifications:
| Lens Form | Plano-concave Lens | Material | CaF2 |
| Diameters(mm) | 12.7(+0.0/-0.1) | Design Wavelength(nm) | 587.6 |
| Effective Focal Length EFL(mm) | -18.00±1% | Back Focal Length BFL(mm) | -19.39 |
| Coating | Uncoated | Surface Quality(S/D) | 80/50 |
| Irregularity@632.8nm | λ/4 | Centration Error(arc min) | ≤3 |
| Center Thickness | 2.0±0.1 | Edge Thickness | 5.3±0.1 |
| Curvature Radius R1 | -7.81 | Clear Aperture | 80% |
| Protective Chamfer | 0.2mmx45° | Wavelength Range(nm) | 180-8000 |
Dia12.7mm EFL-18mm CaF2 Plano Concave Lens Uncoated, Code: 1110-001
Plano-concave lens is a type of concave lens component with an asymmetric lens structure (one flat surface and one inward-curved surface) contributing to a negative focal length. Plano-concave lens could be used for light collimation, diverging, and the enlargement of the focal length of a lens group. CaF2 is an excellent optical material of high transmission in the UV to IR spectral ranges. Its high laser damage threshold and outstanding durabilities to thermal/mechanical/chemical attacks enable its incorporation into UV optical systems, IR lens groups, and high-energy lasers such as excimer lasers.
Shalom EO is a professional supplier and manufacturer of CaF2 plano concave lenses, both stocked and custom versions are available.
