Convex-concave lens is positive meniscus lens, with thicker at the center than at the edge. The convex-concave lenses shorten the focal length and minimize spherical aberration. We offer convex-concave lenses with materials of BK7, JGS1, JGS3, H-ZF1, H-ZF4 and BaK4. Anti-reflection coatings are available, single layer anti-reflection coating and multi-layer anti-reflection coating for wide range of spectrums.
Custom Made Capabilities:
| Lens Shape | convex-concave or meniscus |
| Substrate | UV fused silica glass, JGS1, N-BK7, H-ZF1,H-ZF4 and IR optical glass |
| Diameter tolerance | +/-0.05mm |
| Thickness tolerance | +/-0.05mm |
| Surface quality | 60-40 or better |
| Flatness | Lambda/2 or better |
| Centering | 3 arc mins |
| Coating | AR coated |
| Certificated | RoHs |
Our workshop:
