| 摘要 |
The invention relates to a method for measuring the sagging of a glass panel while bending the glass panel on a ring mould (1). Sagging is measured with a matrix camera and the measurement data is coupled to control the progress of a bending process, particularly the heating of glass or the abortion of a bending process. The ring mould can be provided with fixed pointers for facilitating a camera-operated measurement. In addition, at least one point on glass surface, preferably between the pointers, is made visible to the camer a.
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