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Class Information
Number: 356/927
Name: Optics: measuring and testing > Measuring variations of optical properties of material when it is stressed, e.g., by photoelastic stress analysis using infra-red, visible light, ultra-violet (go1l 1/24)

Patents under this class:

Patent Number Title Of Patent Date Issued
8535821 Optical leak detection sensor Sep. 17, 2013
8421493 Process and device for characterising an electric signal propagating in a sample Apr. 16, 2013
8085434 Printer characterization for UV encryption applications Dec. 27, 2011
7794395 Apparatus for searching for and detecting defects in parts by endoscopy Sep. 14, 2010
7651464 Apparatus for searching for and detecting defects in parts by endoscopy Jan. 26, 2010

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