Anti-reflection Sapphire Coating

A multilayer deposition ended with an ultra-thin layer of sapphire on rigid or flexible substrate;

  • With the requirement of photo quality getting higher and higher, the anti-reflection (AR) layer has to be added on sapphire lens cover to improve their optical transmission. However, most of the anti-reflection materials exhibit a soft surface property, which is easily scratched and abrazed in the daily use.
  • Our anti-reflection sapphire coating technology is a multilayer deposition ended with an ultra-thin layer of sapphire. The surface hardness can be achieving upto 7 Mohs Scale


  1. Surface hardness upto Mohs 7
  2. In single side deposition, transmission is enhanced with;
    • ~2.7% on Glass (n =1.5); Transmittance = 93.7%
    • ~4.6% on Sapphire (n =1.7); Transmittance = 91%
  3. Standard industrial production process


Lens cover, Glasses, etc.

Our Patents

  1. U.S. Patent Number: US 9,695,501 B1; Jul 4, 2017.
  2. U.S. Patent Number: US 2016/0024639 A1, Jan 28, 2016.
  3. PCT Patent Application Number: PCT/CN2015/089413, Sept 11, 2015.
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