21 January 2008 Research on a system and method of automated whole-field measurement of optical glass stress
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Abstract
On the basis of the principle of single quarter wave plate method, a model of automatic whole-field measuring optical glass stress is presented, which is called "4+1steps phase shifting method" including the model for the isoclinic parameter and the stress birefringence. According to this model, an automatic whole-field measuring system is established. The correctness of the model was testified by numeric emulation experiments under the preset conditions of isoclinic angle and stress birefringence. Practical measurement obtained a result coincident with the actual distribution of the isoclinic angle and the birefringence. The automatic whole-field measuring model and system can achieve the whole process intelligently and automatically, and dispose the disadvantages of tradition method about interpreting the stress level by subjective judging birefringence of some selected spots.
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Li-jun Zhang, Yi Tang, Ting-zhu Bai, "Research on a system and method of automated whole-field measurement of optical glass stress", Proc. SPIE 6834, Optical Design and Testing III, 683440 (21 January 2008); doi: 10.1117/12.760237; https://doi.org/10.1117/12.760237
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