Ball lens elementBAL series

Ball lenses are near perfect polished spheres of glass or other transparent materials used to focus light from laser sources into fibers and to couple light from fiber to fiber by matching the N.A.(numerical aperture) of the balls to the fibers.Balls can be machined into drums for higher fiber array pitch and mounting alignment accuracy.

Specifications
Material BK7 and other optical glass
Diameter Tolerance +/-0.005mm
Sphericity +/-0.001mm
Surface Quality 40/20 Scratch/Dig
Flatness < 2.5Lambda Geometry/curvature : ball Material : BK7 Applications : laser Diameter : 1 mm, 3 mm, 4 mm, 5 mm (0.04 in)