A method for measuring the thickness of a glass plate is presented by using the heterodyne interferometry and the two-wavelength interferometry. The phase difference variations due to the wavelength shift and the extraction of the glass plate are measured. Then, its thickness can be calculated under the conditions that the refractive index and the data of wavelength shift are specified.
A method for measuring the thickness of a glass plate
2003-01-01
57827 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
A method for measuring the thickness of a glass plate
British Library Conference Proceedings | 2003
|Europäisches Patentamt | 2021
|