| 摘要 |
One or more light beams from a light source with defined polarization are directed at a suitable angle to the material surfaces, such as glass panes conveyed on a production line. Reflected beams from the material interfaces are directed through a linear or circular polarizer with defined polarization properties and their positions and intensities are measured while the measurement location is altered. Of the related parameters, the thicknesses of constituent materials are calculated from the reflection positions, interface type from the average reflection intensity and the possible tempering from the intensity fluctuations of the reflections. Also the functioning of the production line or system for manufacturing the object may be controlled based on detected properties of the object conveyed. |
