Low Tg Ball Lens / Glass preforms for Aspherical Molding

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Low Tg Ball Lens or Glass Preforms as they are usually called, are made from a wide variety of Low Tg Optical glasses with refractive index ranging from 1.50 to 2.10.

Industrial Technologies manufactures Low Tg ball lenses range in diameter from 0.40mm to 8.0mm

They can achieve a very high level of surface finish depending on the application of the product. Our Low Tg ball lens can achieve a surface finish of Ra = 1.2nm

In terms of visual appearance, our Low Tg ball lens can have a surface finish of No Scratch/Dig at 20x Magnification level (depending on the diameter of the low Tg ball lens).

The Low Tg optical glasses used for making these low tg ball lens are purchased from various renowned optical glass material makers like Ohara, Sumita, Schott, etc.

Aspherical lenses / Low Tg Ball Lens are used to improve signal coupling between Emitters, Fibres, Transmitters, Receivers and Detectors depending on the application.

Standard Specification of our Low Tg Ball lenses:

  • Tolerance on Low Tg Ball Lens Diameter

    +/- 0.0025mm

  • Low Tg Ball Lens Surface Finish in Ra

    1.2 nm

  • Low Tg Ball Lens Roundness

    < 0.001mm

  • No Scratch dig on Low Tg Ball Lens

    at 20X magnification

  • Low Tg Ball Lens Cleaning

    Class 100 clean room

  • Low Tg Ball Lens Packing

    in Waffle trays or Glass bottles

  • Each Low Tg Ball Lens is checked

    100% under microscope before Delivery.

  • All Low Tg Ball Lenses are cleaned and packed

    in Class 100 clean room area.

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