Half Ball Lenses are made from a wide variety of Optical glasses with refractive index ranging from 1.50 to 2.10.
These Half ball lenses range in diameter from 1.0 mm to 5.0 mm
They can achieve a very high level of surface finish depending on the application of the product. Our half ball lens can achieve a surface finish of Ra = 1.2nm.
In terms of visual appearance, our half ball lens can have a surface finish of 20/40 scratch dig.
The optical glasses used for making these half ball lens are purchased from various renowned optical glass material makers like Ohara, Sumita, Schott, etc. which have a strict control on the nd and vd value of the glasses.
Half ball lenses are used to improve signal coupling between Emitters, Fibres, Transmitters, Receivers and Detectors depending on the application.
Standard Specification of our half Ball lenses: