Evaluation and Concept

This chapter introduces a concept that evaluates the homogeneity and quality of the tempering process with respect to the interference colors and patterns (anisotropies) perceivable by the human observer based on retardation images of tempered architectural glass. First, the evaluation methods presented in Chapter 7 are compared to determine commonalities, deviations, advantages, and weaknesses. Subsequently, the final evaluation of the retardation images, acquired with measuring system M2, is performed on glass samples of groups 3 to 6. This includes the identification and verification of the influencing factors of chapter 5 and the classification of the glass panes into quality classes. Finally, a concept is presented and discussed with which anisotropy effects on the perception of facades can be reduced in the future.