Patent · US Expired

Method and apparatus for marking glass with a laser

US6674043B2 · kind B2 · utility

6Cited by

6References

9Claims

0Family size

Assignee

Schott Glas · DE

Inventors

Ulla Trinks · Mitterteich, DE
André Witzmann · Waldershof, DE

Key dates

Filing date	May 6, 2002
Grant date	Jan 6, 2004
Priority date	—
Expiry date	May 6, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C23/0025
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

In an apparatus and a method for marking glass with a laser, the glass is first brought to a temperature above the transformation temperature of the glass. The glass is then acted upon by a laser pulse which produces a mark on the surface of the glass. The peak power of the laser pulse is preferably selected so that it is merely a thermal interaction with the glass surface which occurs. This has the advantage that the material properties of the marked glass remain unchanged compared with the unmarked product.

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