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Durable solar mirror films

United States Patent

9,568,653
February 14, 2017
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
The present disclosure generally relates to durable solar mirror films, methods of making durable solar mirror films, and constructions including durable solar mirror films. In one embodiment, the present disclosure relates to a solar mirror film comprising: a multilayer optical film layer including having a coefficient of hygroscopic expansion of less than about 30 ppm per percent relative humidity; and a reflective layer having a coefficient of hygroscopic expansion.
O'Neill; Mark B. (Stillwater, MN), Henderson; Andrew J. (Eagan, MN), Hebrink; Timothy J. (Scandia, MN), Katare; Rajesh K. (Cottage Grove, MN), Jing; Naiyong (Woodbury, MN), North; Diane (Inver Grove Heights, MN), Peterson; Eric M. (Saint Paul, MN)
3M INNOVATIVE PROPERTIES COMPANY (Saint Paul, MN)
14/ 398,485
April 22, 2013
GOVERNMENT LICENSE RIGHTS The Government of the United States of America has rights in at least some of the inventions described in this Patent Application pursuant to DE-AC36-08GO28308 (CRADA No. 08-316) awarded by the U.S. Department of Energy.