Plano Concave Lens – IR Grade CaF2 (PCC)
Calcium Fluoride Lenses
- Ideal for wavelengths over 2000 nm
- Focusing or imaging applications
- Focal Length: f = -R / (n-1)
- n: refractive index
- R: radius curvature
These plano-concave lenses are made from infra-red grade Calcium Fluoride and are excellent for use with lasers emitting in the 2 – 5 micron range. They are supplied uncoated but anti-reflection coatings are available on request. Please contact the Lambda’s sales team for more coating information.
Material: |
IR laser grade CaF2 |
Surface Flatness: |
< λ / 4 @ 633 nm |
Surface Quality: |
<20/10 (both sides) |
Centration Error: |
< 3 arc min |
Radius of Curvature Tolerance: |
< Typical ± 0.5% |
Diameter Tolerance: |
< + 0.00 / – 0.20 mm |
Thickness Tolerance: |
< ± 0.25 mm |
Clear Aperture: |
> 85% of diameter |
Plano Concave Lens – IR Grade CaF2 (PCC)