Reflection reducing coating

US6645608B2 · kind B2 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Ulrike Schulz · Jena, DE
• Norbert Kaiser · Markt Taschendorf, DE
• Uwe Schallenberg · Jena, DE

Key dates

• Filing date: Feb 22, 2002
• Grant date: Nov 11, 2003
• Expiry date: May 2, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24942
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a reflection reducing coating on a substrate which is formed from an alternating change layer system each having a lower and higher refractive index. In particular, the invention can be advantageously employed on surfaces of substrates such as optical elements and spectacle glasses, in particular. According to the object most different substrates are to be coated, and during the deposition of a reflection reducing coating an unacceptable temperature rise of the respective substrate is not to occur. With this, a coating is deposited in which the sum of the layer thicknesses of layers each having a higher refractive index is ≦5% of the total layer thickness of the coating, and the layers of the material having a higher refractive index within the layer sequence of the change layer system are uniformly distributed.