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Coating, composed of an optically effective layer system, for substrates, whereby the layer system has a high anti-reflective effect, and method for manufacturing the coating

  • US 5,170,291 A
  • Filed: 06/18/1991
  • Issued: 12/08/1992
  • Est. Priority Date: 12/19/1989
  • Status: Expired due to Fees
First Claim
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1. A coating for a front side of a substrate, which side faces an observer, said coating being composed of an optically effective layer system, said layer system having a high anti-reflective effect, said layer system being composed of four layers with a first layer with a layer thickness of 100Å

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    10% being arranged on the front side of the substrate and comprising a highly refractive material, a second layer of the four layers being arranged on the first layer, said second layer having a thickness of 400Å

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    5% and comprising a low-refracting material, a third layer of the four layers being arranged on the second layer, said third layer having a thickness of 1040Å

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    2% and comprising a highly refractive material, and the fourth layer of the four layers being arranged on the third layer, said fourth layer having a thickness of 940Å

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    2% and comprising a low-refracting material.

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