Ball lenses are generally used for laser alignment focusing ,laser - optical fiber coupling, optical fiber - fiber coupling, as well as light - sensor coupling. Coupling efficiency is usually greater than 90%. In order to achieve optical fiber and another fiber (or semiconductor laser) coupled , optical fiber end face placed in the focus of the ball lens, its output light into a parallel light, put another ball lens and optical fiber placed on its axis and make them focus and face overlap.

Alpha Optics is able to produce ball lens with ultra-high-precision diameter and face Alpha Optics can manufacture different materials and the range of 1-50mm diameter ball lens according customers requirements.

Specifications:

Processing range:..................Diameter 1mm to 50mm
Diameter Tolerance:...............…+/-0.005mm
Ellipticity:........................+/-0.005mm
Clear Aperture:..................….>80%
Surface Quality:..................….60-40 scratch and dig
Coating:......................... Single layer or Multi layers AR coating

The above-mentioned are commercial specifications only, higher tolerances are available upon request.