Acquisition method of stress distribution of tempered glass, manufacturing method of tempered glass

摘要

This method of obtaining the stress distribution of the tempered glass is, as a preliminary preparation, measuring the stress distribution for a plurality of tempered glasses including tempered glass with different tempered conditions, and the glass surface layer side from the depth of the glass at the position where the stress distribution is bent. A step of deriving a parameter indicating the relationship between the first stress distribution and the second stress distribution based on the measurement result of the first stress distribution and the measurement result of the second stress distribution on the side of the deep glass layer than the depth of the glass. , Using the parameter, a step of obtaining a stress distribution of the tempered glass to be measured, the step of obtaining the stress distribution comprises a step of measuring the first stress distribution of the tempered glass to be measured, And calculating the second stress distribution based on the parameter.