Patent · US Active

Elongation method for producing an optical component of quartz glass and preliminary product suited for performing the method

US8015846B2 · kind B2 · utility

2Cited by

17References

15Claims

0Family size

Assignee

HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

Joachim Peekhaus · Bad Orb, DE
Ralph Sattmann · Hanau, DE
Joerg Werner · Ithaca, US

Key dates

Filing date	Aug 15, 2005
Grant date	Sep 13, 2011
Priority date	—
Expiry date	May 26, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P40/57
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

This method for drawing a quartz glass optical component shortens the pulling process and minimizes loss of material. An end face of a quartz glass hollow cylinder forms a tapered end portion to an attachment piece of quartz glass having a bore. The inner bore of the hollow cylinder and the bore of the attachment piece are at least temporarily interconnected fluidically as a passage bore. A cleaning fluid is passed through the inner bore of the hollow cylinder and the passage bore. A core rod of quartz glass, which rests on a contact surface of the attachment piece, is inserted into the inner bore of the hollow cylinder, and the hollow cylinder is continuously supplied to a heating zone, heated therein so as to form a drawing bulb, and the component is continuously drawn therefrom.

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