Ball lens

Ball LensSpherical 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 fit into smaller packages. Coupling efficiency is generally >90% due to the simplicity of these lenses. Substrate material: Optical glass,Fused Silica, Si and Sapphire Diameter: 0.8 mm 50mm Diameter Tolerance: up to +0/-0.005mm Diameter Ellipticity: Up to +/-0.001mm Clear Aperture: >Central 80% of diameter Surface Quality: 60-40 S/D Surface Accuracy: Power<5 Fringe(2.5λ); Irregularity 1 fringe(λ/2)