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. 03, 2012
Filed:
Apr. 17, 2008
Dale Capewell, Agoura Hills, CA (US);
Dale Capewell, Agoura Hills, CA (US);
Iris International, Inc., Chatsworth, CA (US);
Abstract
A chemistry strip reader and method for analyzing chemistry strips. A conveyor moves chemical strips through different imaging positions at discrete points in time across the field of view of a camera, which captures images of each chemistry strip at different discrete times. A processor determines reflectance values for each of the chemical strips from the captured images at the discrete points in time. Calibration targets adjacent the chemistry strips can be used to adjust the determined reflectance values. The light source can sequentially illuminate each chemistry strip with three different wavelengths of light, where the processor calculates a concentration determination associated with the chemistry strip by calculating different chromaticity coordinates for the different wavelengths of light, and comparing them to known chromaticity coordinates for known analyte concentrations.