Half Ball Lens

Best quality Half ball lens

Half Ball Lens Details

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.


Property Value
Diameter Tolerance +/- 0.0025mm
Thickness Tolerance +/- 0.02mm
Polish of Ball/Flat Side 20/40 Scratch Dig
Packaging Individually packed in plastic trays


  • Optical glass from Ohara/Sumita/Schott
  • Sapphire (Refractive Index= 1.76)
  • Spinel (Refractive Index = 1.727)
  • Cubic Zirconia (Refractive Index= 2.177)
  • Any Material supplied by customer.
  • Low Tg Glass from Ohara/Sumita/Schott.
  • Schott Glass Materials

  • Ohara Glass Materials


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