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:
Dec. 02, 2014
Filed:
Dec. 27, 2011
Applicant:
Douglas M. Johnson, Seattle, WA (US);
Inventor:
Douglas M. Johnson, Seattle, WA (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/42 (2006.01); G01N 21/55 (2014.01); G01N 21/43 (2006.01);
U.S. Cl.
CPC ...
G01N 21/552 (2013.01); G01N 2021/434 (2013.01);
Abstract
A light transmitting optical fiber shines light at a side edge portion of a hemispherical lens. The light is transmitted along the periphery of the lens to a second side edge portion located opposite the first side edge portion. A light sensitive component detects light at the second edge portion which light resulted from the light transmitted at the first side edge portion. The intensity of light detected at the second side edge portion is indicative of the fluid to which the lens is exposed, and can be evaluated and signaled by a microprocessor.