Ideal for wavelengths 2-5 µm
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 |
| Material | IR Grade CaF2 |
|---|---|
| Diameter | 0.5" dia, 1.0" dia |
| Focal Length | 050 mm @ 2940nm, 075 mm @ 2940nm, 100 mm @ 2940nm, 150 mm @ 2940nm, 200 mm @ 2940nm, 250 mm @ 2940nm, 300 mm @ 2940nm, 400 mm @ 2940nm, 500 mm @ 2940nm, 750 mm @ 2940nm, 1000 mm @ 2940nm |
Plano Convex Mirror Blanks (PCXM) 
