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:
Mar. 10, 2020
Filed:
Jun. 20, 2019
Applicant:
Vaisala Oyj, Helsinki, FI;
Inventor:
Juha Jääskeläinen, Vantaa, FI;
Assignee:
VAISALA OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/41 (2006.01); F21V 8/00 (2006.01); G02B 6/04 (2006.01); G01N 21/43 (2006.01);
U.S. Cl.
CPC ...
G01N 21/4133 (2013.01); G01N 21/431 (2013.01); G02B 6/0008 (2013.01); G02B 6/04 (2013.01); G01N 2021/432 (2013.01);
Abstract
The present disclosure relates to light arrangement for an optical device for measurement of an index of refraction, having a light source, a fiber bundle arrangement for transmitting light from the light source, a diffusing member, and imaging optics for transmitting the light to a measuring window. In order to provide for an arrangement which is durable and accurate even when used for measuring hot specimens where the light source is positioned far from the measuring window, the fiber bundle arrangement includes a novel combination of a first fiber bundle and a second fiber bundle.