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On-line, continuous monitoring in solar cell and fuel cell manufacturing using spectral reflectance imaging

United States Patent

9,234,843
January 12, 2016
View the Complete Patent at the US Patent & Trademark Office
On-line, Continuous Monitoring in Solar Cell and Fuel Cell Manufacturing Using Spectral Reflectance Imaging
A monitoring system 100 comprising a material transport system 104 providing for the transportation of a substantially planar material 102, 107 through the monitoring zone 103 of the monitoring system 100. The system 100 also includes a line camera 106 positioned to obtain multiple line images across a width of the material 102, 107 as it is transported through the monitoring zone 103. The system 100 further includes an illumination source 108 providing for the illumination of the material 102, 107 transported through the monitoring zone 103 such that light reflected in a direction normal to the substantially planar surface of the material 102, 107 is detected by the line camera 106. A data processing system 110 is also provided in digital communication with the line camera 106. The data processing system 110 is configured to receive data output from the line camera 106 and further configured to calculate and provide substantially contemporaneous information relating to a quality parameter of the material 102, 107. Also disclosed are methods of monitoring a quality parameter of a material.
Sopori; Bhushan (Denver, CO), Rupnowski; Przemyslaw (Golden, CO), Ulsh; Michael (Broomfield, CO)
Alliance for Sustainable Energy, LLC (Golden, CO)
14/ 238,918
20140204383
August 25, 2011
CONTRACTUAL ORIGIN The United States Government has rights in this invention under Contract No. DE-AC36-08GO28308 between the United States Department of Energy and the Alliance for Sustainable Energy, LLC, the manager and operator of the National Renewable Energy Laboratory.