Frequently Asked Questions

The optics are available in diameters ranging from 2mm to 400mm.

The optics are made from BK7, sapphire, fused silica, ZnS2, CaF2, Si, and Ge.

The optics have a surface quality of 40-20 standard.

The optics have a flatness specification of 1/10 lambda.

The available coatings include AR (anti-reflective), HR (high-reflective), Silver, Aluminum, and Golden.

The optics have a chamfer of 0.25mm x 45 degrees.

You can contact them via phone at 86-431-81323204, email at sales@sunday-optics.com, or Skype at bess612537.

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