Plano Convex Lens – IR Grade CaF2 (PCX)
Ideal for wavelengths 2-5 µm
- Focal length designed at 2.94 µm
- Focal Length: f = R/(n-1)
- n: refractive index
- R: radius curvature
These plano-convex lenses are made from infra-red grade Calcium Fluoride and are excellent for use with lasers emitting in the 2-5 micron range. The focal length is designed at 2.94 microns. They are supplied uncoated but anti-reflection coatings are available on request.
Material: |
IR Grade CaF2 |
Surface Flatness: |
< λ / 4 @ 633 nm |
Surface Quality: |
<20/10 (both sides) |
Centration Error: |
< 3 arc min |
Focal Length Tolerance @ 2.94um |
< Typical ± 0.5% |
Diameter Tolerance: |
< + 0.00 / – 0.20 mm |
Thickness Tolerance: |
< ± 0.25 mm |
Clear Aperture: |
>85% of diameter |