Ball Lenses

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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.

Main Specifications  
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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