Patent 11946814 was granted and assigned to Toyota Motor Engineering & Manufacturing North America on April, 2024 by the United States Patent and Trademark Office.
A window can comprise a first side and a second side substantially parallel to the first side. The window can comprise an optical grating operatively positioned with respect to one of the first side and the second side. The optical grating can be used to determine a temperature at or near the respective one of the first side and the second side.