AR coated double-convex lenses function similarly to plano convex lenses in that they have a positive focal length and focus parallel rays of light to a point. Both faces of bi-convex lenses are spherical and have the same radius of curvature, thereby minimizing spherical aberration. AR coating for bi-convex lenses is available from us, we coat single layer AR coating and BBAR coating for the bi-convex lenses.
Our custom made capabilities,
| Substrates | N-BK7, H-K9L, UV fused silica, N-SF11, or IR glasses |
| Diameter | 3mm to 400mm |
| Tolerance | +/-0.05mm |
| Thickness tolerance | +/-0.05mm |
| Surface quality | 40-20 or 20-10 |
| Surface figure | L/4 |
| Centering | 3 arc mins |
| Bevel | 0.1-0.3mm |
| Coating | No coated or AR coated @visible or other wavelengths, R<0.5% |
