SYSTEM AND METHOD FOR MEASURING THE SURFACE OF SHAPED GLASS SHEETS Russian patent published in 2023 - IPC G01N21/17 

FIELD: optics.

SUBSTANCE: essence of the invention lies in the following: forming and directing a planar laser plane using an ultraviolet laser and corresponding optics onto the surface of a glass sheet; excitation of the surface of the glass sheet at the intersection of the planar laser plane and the surface to form a line with a wavelength in the visible range on the surface of the glass sheet; obtaining an image of a line with a wavelength in the visible range using the first camera and the second camera, and both the first camera and the second camera acquire an image of the corresponding separate part of the surface of the glass sheet with separate areas of view on the surface of the glass sheet; determining first and second coordinates in the first coordinate sequence associated with the visible wavelength line by analysing the image data obtained from the first camera; determining a third coordinate associated with each of the first and second coordinates in the first coordinate sequence associated with a visible wavelength line by triangulation; determining first and second coordinates in the second coordinate sequence associated with the visible wavelength line by analysing the image data obtained from the second camera; determining a third coordinate associated with each of the first and second coordinates in the second coordinate sequence associated with a visible wavelength line by triangulation; creating a first three-dimensional map of the surface of the glass sheet depending on the first sequence of coordinates; creating a second three-dimensional map of the surface of the glass sheet depending on the second sequence of coordinates; and combining the first and second 3D maps to form a combined surface map of the glass sheet.

EFFECT: providing the possibility of reliable control of the optical characteristics of the surface of the shaped glass sheet.

20 cl, 15 dwg