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:
Jun. 13, 2017
Filed:
Feb. 06, 2015
Solarzentrum Stuttgart Gmbh, Stuttgart, DE;
Liviu-Mihai Stoicescu, Stuttgart, DE;
Michael Reuter, Stuttgart, DE;
Juergen H. Werner, Stuttgart, DE;
SOLARZENTRUM STUTTGART GMBH, Stuttgart, DE;
Abstract
A method and an apparatus for testing photovoltaic modules are provided, wherein power that a photovoltaic module outputs or draws is modulated a modulating frequency, the photovoltaic module is scanned using a camera and the camera signal generated by the camera is evaluated in order to obtain a luminescence image of the photovoltaic module which is used for detecting defects on the photovoltaic module. The photovoltaic module is operated only in the forward direction and the camera signal is evaluated using a digital filter, such as a lock-in filter.