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. 01, 2015
Filed:
Aug. 20, 2010
Ingo Bartsch, Dorsten, DE;
Ingo Bartsch, Dorsten, DE;
PILKINGTON AUTOMOTIVE DEUTSCHLAND GMBH, Witten, DE;
Abstract
A method of inspecting a heatable glazing is disclosed. A heatable glazing comprises a heater array having at least one heater wire. The method comprises the steps of (i) illuminating the heatable glazing with a light source to produce a shadowgraph image of the heatable glazing; (ii) passing a sufficiently high electrical current through the heater array such that the heater wire is observable in the shadowgraph image of the heatable glazing, such a shadowgraph image of the heatable glazing being referred to as an active shadowgraph image of the heatable glazing; and (iii) capturing the active shadowgraph image of the heatable glazing with an imaging sensor. Apparatus for carrying out the method is also disclosed.