Patent · US Expired

Aerodynamic window

US5153893A · kind A · utility

0Cited by

4References

15Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Junguan Shen · Shanghai, CN
Keming Du · Aachen, DE

Key dates

Filing date	Apr 20, 1990
Grant date	Oct 6, 1992
Priority date	—
Expiry date	Apr 20, 2010

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/0343
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An aerodynamic window for gas lasers, has an active chamber with a beam penetration opening free of solids. An end of a beam duct is connected to the beam penetration opening and is transversely penetrated by a nozzle duct of a gas flow window through which compressed gas can flow. A beam outlet opening delivers a laser beam to an exterior space which is preferably at atmospheric pressure. A suction chamber of a differential pump is provided between the other end of the beam duct and the beam outlet opening, and the working pressure of the differential pump is approximately equal to the pressure in the other end of the beam duct on the suction chamber side.

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