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:
Oct. 14, 2025
Filed:
Nov. 19, 2020
Applicant:
Lavision Gmbh, Goettingen, DE;
Inventor:
Thomas Berg, Goettingen, DE;
Assignee:
La Vision GmbH, Goettingen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/45 (2006.01); G02B 27/48 (2006.01); G02B 27/54 (2006.01); G01N 21/15 (2006.01);
U.S. Cl.
CPC ...
G01N 21/455 (2013.01); G02B 27/48 (2013.01); G02B 27/54 (2013.01); G01N 2021/151 (2013.01);
Abstract
A method is provided for detecting primary gas flows () in flow chambers (). The primary gas () flowing in a flow chamber () is locally seeded with a seed substance and the movement of the seed substance, representative of the flow of the primary gas (), is detected by imaging by an image detector () and an imaging optics () arranged in front of said image detector (). A gas mixture () that moves along with the primary gas () without relative motion and that has a refractive index distinguishable from that of the primary gas () is used as the seed substance, and imaging detection is carried out by a background schlieren measurement method.