Study of the Pressure Coefficient Measurement for the Optical Glass Refraction Index

摘要

In this paper the pressure coefficient measurement method for the optical glass refraction index is given. The strip - shaped glass sample is utilized in this method, and the pressure is symmetrically applied. The refraction index variation with the forces can be obtained with measuring the variation of transmission interference fringes. When the measurement accuracy of interference fringes is λ/10 , the relative error of the refraction index variation is 3 % . The measurement method and the measurement device is unique at present in our country