Ball lenses in various sizes made of optical glass are produced to provide a high coupling efficiency when used with fiber optics. They are simple to use as they can be put in contact with the end of the fiber.
Ball Lenses
| Specifications | |
| Material | Optical glass, Sapphire, Fused Silica |
| Diameter Tolerance | +/-0.05mm |
| Centration | 3 arc minutes |
| Clear Aperture | >95% |
| Surface Figure | 1/4 wave @632.8nm |
| Surface Quality | 10-5 scratch and dig |
| Coating | None, AR, AL... |
