| 摘要 |
A method and apparatus of measuring wall thickness of hollow glass articles (12), such as molded glass containers having interior and exterior wall surfaces, includes the steps of measuring intensity of radiation emitted by the article at a first wavelength (at 18) at which intensity varies as a function of both temperature at the surfaces and wall thickness between the surfaces, and at a second wavelength (at 24) at which intensity varies as a function of temperature at the surface substantially independent of wall thickness between the surfaces. Since the first intensity measurement is a function of both wall thickness and temperature, while the second intensity measurement is a function solely of surface temperature, wall thickness between the surfaces can determined (at 26) as a combined function of the first and second intensity measurements. <IMAGE> |
