Plano-concave lens is the most common item used for light projection and beam expansion. Coated with antireflective coatings, lenses are used in various optical systems, lasers and assemblies.
| Material | BK7, FS, UVFS, CaF2, ZnSe, Si, Ge |
| Wavelength | 350-2000nm/185-2100nm |
| Dimension Tolerance | +0.0/-0.1mm |
| Thickness Tolerance | +/-0.1mm |
| Clear Aperture | >85% |
| Focal Length Tolerance | 5%(Standard)/ 1%(High Precision) |
| Surface Quality | 40/20(Standard)/ 20/10(High Precision) |
| Centration | <3 arc min |
| Coating | Upon customers’ request |
