Plano Convex Spherical Lenses - UV Grade CaF2 (PCX)
- UV grade CaF2. BK7A for UV transmitting applications (especially, 193nm, 213nm, 248nm)
- Plano-convex is close to best form for a focusing lens
- Focal length designed at 250nm
Focal Length: f = R/(n-1)
n: refractive index
R: radius curvature
Plano-convex lenses are useful for a wide range of applications. These lenses are manufactured from UV transmitting CaF2 (specifically designed for Excimer 193~248nm) applications. Lenses are uncoated but Anti-reflection coatings are available. When used to focus a collimated beam, the light should be incident on the curved surface of the lens. These plano-convex lenses may be combined with other lenses to form complex imaging systems.
| Material: | UV Grade CaF2 |
| Surface Flatness: | < λ / 4 @ 633 nm |
| Surface Quality: | <20/10 (both sides) |
| Centration Error: | < 3 arc min |
| Focal Length Tolerance (@250nm) | < Typical ± 0.5% |
| Diameter Tolerance: | < + 0.00 / - 0.20 mm |
| Thickness Tolerance: | < ± 0.25 mm |
| Clear Aperture: | > 85% of diameter |
| FL @ 250nm (mm) | FL @ 193nm (mm) | Radius of Curvature (mm) |
| 50 | 46.66 | 23.40 |
| 75 | 69.99 | 35.10 |
| 100 | 93.32 | 46.80 |
| 150 | 139.98 | 70.21 |
| 200 | 186.64 | 93.61 |
| 250 | 233.30 | 117.01 |
| 500 | 466.60 | 234.02 |
| 750 | 699.90 | 351.02 |
| 1000 | 933.20 | 468.03 |
