Patent · US Expired

Process for the production of a reflection-reducing coating on lenses

US5597622A · kind A · utility

46Cited by

27References

8Claims

0Family size

Assignee

Leybold GmBH · DE

Inventors

Alfons Zoller · Salmünster, DE
Karl Matl · Kleinostheim, DE
Rainer GÖTZELMANN · Rodenbach, DE
Gunther Sauer · Berlin, DE

Key dates

Filing date	Jan 4, 1994
Grant date	Jan 28, 1997
Priority date	—
Expiry date	Jan 4, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG02B1/14
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a process of providing a scratch-resistant coating for a lens made of an optical material comprising synthetics. In order for the synthetic material, for example a CR 39, to be protected against scratches, a very thin adhesion layer of SiO is applied first, and is subsequently provided with a thick SiO.sub.2 layer. Both layers are deposited in a vacuum chamber which comprises both a thermal vaporizer for vaporizing the coating materials and a plasma source for irradiating the substrate simultaneously with application of the vaporized coating material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.