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:
May. 18, 1999
Filed:
Sep. 19, 1997
Applicant:
Inventor:
William H Wynn, Hillsborough, CA (US);
Assignee:
Wedgewood Technology, Inc., San Carlos, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
250573 ; 250576 ; 356413 ; 356246 ; 356436 ;
Abstract
Inline optical sensor having first and second optically transmissive windows positioned on opposite sides of a product stream. A light source is positioned outside the first window for directing light through the product stream, and the spacing between the windows is adjusted to control the length of an optical path through the product stream. A detector is positioned outside the second window for receiving light passing along the optical path, and a photometric calibration filter is removably installed between the second window and the detector for calibration of the system.