Plano-concave lenses are used for beam divergence, in combination with plano-convex lenses and for beam expansion under general requirements. It is widely used in display systems, objective lens systems, imaging systems, and laser optical systems.
Specification
| Material | Optical Glass |
| Surface Accuracy | <λ/5@633nm |
| Surface Quality | <60/40 scratch and dig |
| Centration | ≤1 arcmin |
| Focal Length Tolerance | <±1% |
| Diameter Tolerance | <+0.00/-0.10mm |
| Thickness Tolerance | <±0.1 |
| Clear Aperture | ≥90% |
| Coating | AR/BBAR |
| Diameter Range | 5~260mm |
