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Spherical Ball Lenses are commonly used for laser collimating and focusing, laser-to-fiber coupling, fiber-to-fiber coupling, and fiber-to-detector coupling. Larger spheres are easier to handle and ease the sensitivity of translational alignment. However, smaller spheres
has the benefit of fitting into smaller packages.
The addition of a broadband MgF2 antireflection coating results in a highly efficient lens due to the high refractive index of the glass. Coupling efficiency is generally >90% due to the simplicity of these lenses.
Red Optronics can supply spherical ball lenses in various materials, including
BK7(Glass), Sapphire, CaF2, BaF2, YAlO3, or custom materials upon request.
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Main Specifications
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| Material |
BK7, Sapphire or custom
materials |
| Surface
Quality |
85% |
| Diameter |
Minimum 1mm |
| Diameter
Tolerance |
+/-0.005mm |
| Surface
Quality |
60/40 Scratch/Dig |
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