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:
Aug. 19, 1998
Jian Shen, Princeton, NJ (US);
Thierry Dupinet, Zurich, CH;
Ortho Diagnostic Systems, Inc., Raritan, NJ (US);
Abstract
A method, and a calibration device, for calibrating a system for analyzing aqueous solutions and that includes a pixel array and a variable focus line for focusing onto the pixel array illuminated images of the aqueous solutions. The method includes the steps of illuminating a pattern on the calibration device to form an illuminated image of that pattern, and directing that illuminated image through the lens and onto the pixel array. The method includes the further step of deriving data values representing the image on the pixel array, and using those data values to adjust the focus of the lens and to adjust the position of the calibration device relative to the pixel array.