The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1976
Filed:
Sep. 29, 1975
Applicant:
Inventor:
Michel Duchet, Briis-sur-Forges, FR;
Assignee:
Compagnie Generale d'Electricite, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350319 ; 331 / ; 331 / ; 350 93 ;
Abstract
Optical device comprising two optical elements made of germanium arranged parallel to each other and intended to have a high-power CO.sub.2 laser beam crossing through them; helium at low temperature flows between the two optical elements and a dry nitrogen flux is directed towards at least one of the input and output faces of the device.