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. 16, 1996
Filed:
Jun. 16, 1994
Applicant:
Inventor:
Brad L Cummins, Freeport, IL (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250574 ; 356343 ;
Abstract
A turbidity sensor is provided with two plates which each have an aperture formed therethrough. The apertures are aligned to define a light passage from a light source such as a light emitting diode. By properly selecting the gap between the two plates and the size of the two apertures, the angle of divergence light emanating from the light source can be controlled and reduced to a magnitude that prevents light from passing directly from the light source to a scattered light detector of the turbidity sensor. The arrangement avoids the necessity of using expensive focusing lenses.