Spinel is also a well known single crystal being used in the optical industry. The main advantage being that spinel is a cubic single crystal.

Quartz ball lens with good UV and IR transmission is widely used for focusing and coupling light into and out of the fibre.

Alumina oxide balls resist corrosion and abrasion extremely well and maintain dimensional stability at temperatures up to 1734ºC (3180 ºF).

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.

The high refractive index of Cubic Zirconia material makes it very interesting to be used as a Ball lens for optical telecom products.

Half ball lenses are used to improve signal coupling between Emitters, Fibres, Transmitters, Receivers and Detectors depending on the application.

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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.