optical glass ball lens for Led 

  optical glass ball lens for Led 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. Specifications: Material: BK7/K9,UV Fused Silica,Sapphire,LaSF7 glass, Silicon,Znse, Ruby etc Sphericity: 1um,2um,3um Surface Quality: 60/40 Diameter: 0.5-100mm More Information As Choice Spherical Triplet Lenses Plano Convex Doublet Lenses IR cut off filter Narrow Bandpass Filter Round Glass Concave Mirror Reflective Mirror Sapphire Tube