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:
Sep. 14, 2004
Filed:
Jul. 17, 2003
Robert R. Turnbull, Holland, MI (US);
Robert C. Knapp, Coloma, MI (US);
Roy E. Vawter, Dorr, MI (US);
Gentex Corporation, Zeeland, MI (US);
Abstract
A control system for a plurality of electrochromic elements, for example, used in automobiles, to control the glare of the IEC elements used as a rearview mirror ( ) as well as the OEC elements ( ) used as sideview mirrors ( ). The IEC element and each of the OEC elements is provided with an individual drive circuit ( ). The drive circuits for the OEC's elements may be customized to account for various factors such as the type of curvature as well as the size and shape. Since individual drive circuitry is provided for the IEC elements and each of the OEC elements, the reflectance of each of the electrochromic elements ( ) can be relatively accurately controlled by way of glare signal from inside the automobile.