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:
Apr. 15, 2003
Filed:
Jul. 09, 2001
Jon P. Longtin, East Setauket, NY (US);
Research Foundation of State University of New York, Stony Brook, NY (US);
Abstract
Disclosed are a method and an apparatus for precision optical measurement of solute concentration and temperature of a transparent liquid. The apparatus includes a vessel ( ) which contains a sample of liquid ( ), the refractive index of which is to be determined, a light source ( ) and a beam position sensor ( ). The vessel ( ) has an entrance side and an exit side, with a known angular relationship therebetween, and is situated in a known ambient The light source ( ) is located so as to cause a beam of light to impinge on the entrance side at an angle with respect to a normal to an outer surface of the entrance side, to pass through the liquid ( ), and to then pass through the exit side, from which it exits at an angle with respect to a normal to an outer surface of the exit side. The beam position sensor ( ) provides data for determining the exit angle thereby permitting the refractive index of the liquid to be determined, based on the angles.