Frequently Asked Questions

Kaoyu specializes in high precision sapphire optical products such as window, prism, lens, tube, rod, dome, concave, convex, etc.

These sapphire optical products can be used in laser optics, spectroscopy, and microscopy.

Kaoyu offers sapphire optical products that can be polished up to 20/10, with flatness up to lambda/10 and size up to 200mm.

Yes, Kaoyu offers vacuum coating on their sapphire products including HR, AR, BS, and special effects.

Kaoyu also offers optical products made with ZnSe, Si, Ge, ZnS, CaF2, MgF2, quartz, etc.

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