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:
May. 07, 2019
Filed:
Sep. 08, 2015
Heraeus Quarzglas Gmbh & Co. KG, Hanau, DE;
Stefan Weidlich, Mainz, DE;
Clemens Schmitt, Blankenbach, DE;
Jörg Werner, Altenstadt, DE;
Markus Schmidt, Jena, DE;
Jens Kobelke, Jena, DE;
Heraeus Quarzglas GmbH & Co. KG, Hanau, DE;
Abstract
A measuring cell includes a cavity for receiving a test sample to be used in a particle detection apparatus. The measuring cell is configured as an optical waveguide for guiding a light beam. The waveguide has a core which has a refractive index n, extends along a longitudinal axis of the waveguide, has a cross-sectional area Aof less than 80 μmin a cross section perpendicular to the longitudinal axis, and which is surrounded by a cladding having a smaller refractive index than n. The cavity forms a channel. The channel extends along the longitudinal axis, is formed inside of or in contact with the core, and has at least one open end with an opening area Aof less than 0.2 μm.