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:
Nov. 03, 2015
Filed:
Apr. 09, 2012
Applicants:
Harry Lee, Malden, MA (US);
Kevin Shao-kwan Lee, Cambridge, MA (US);
Inventors:
Harry Lee, Malden, MA (US);
Kevin Shao-Kwan Lee, Cambridge, MA (US);
Assignee:
Pharyx, Inc., Woburn, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); G01N 21/59 (2006.01); G01N 21/03 (2006.01); G01N 1/20 (2006.01);
U.S. Cl.
CPC ...
G01N 21/59 (2013.01); G01N 21/0303 (2013.01); G01N 2001/2057 (2013.01);
Abstract
The present invention provides apparatus and methods for measuring the optical density of a fluid by measuring the light transmission through a reconfigurable optical path. The optical path is reconfigured by the deflection of an elastic membrane wherein the optical path length through the fluid is determined by the position of the membrane relative to a fixed surface. The optical density can be determined from two measurements with different optical path lengths through the fluid.