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:
Jan. 11, 2005
Filed:
Dec. 10, 2002
Eugene Tokhtuev, Duluth, MN (US);
Christopher Owen, Duluth, MN (US);
Anatoly Skirda, Duluth, MN (US);
Viktor Slobodyan, Duluth, MN (US);
José Goin, Duluth, MN (US);
Eugene Tokhtuev, Duluth, MN (US);
Christopher Owen, Duluth, MN (US);
Anatoly Skirda, Duluth, MN (US);
Viktor Slobodyan, Duluth, MN (US);
José Goin, Duluth, MN (US);
Apprise Technologies, Inc., Duluth, MN (US);
Abstract
A small size turbidity sensor for underwater in-situ measurements in the wide range of turbidity values is disclosed that may be integrated into a housing with other underwater sensors. The turbidity sensor incorporates micro focusing devices and light stop that gives no divergence excitation beam with convergence less than 1.5 degrees and the measuring angle between the optical axis of the incident radiation and mat of the diffused radiation 90 ±2.5 degrees. Another embodiment includes internal and external optical calibrators that allows the sensor to work longer without human intervention.