Effect Of Thermal Stress On The Homogeneity Of Optical Glasses

Zhao Weng-xing; Wang Da-heng

doi:10.1117/12.934358

16 June 1983 Effect Of Thermal Stress On The Homogeneity Of Optical Glasses

Zhao Weng-xing, Wang Da-heng

Proceedings Volume 0369, Max Born Centenary Conf; (1983) https://doi.org/10.1117/12.934358
Event: The Max Born Centenary Conference, 1982, Edinburgh, United Kingdom

Abstract

When glass is annealed under stressed conditions, its physical properties such as refractive index, density, etc. are subjected to change as compared with similarly annealed glass under stress free conditions. This phenomenon may be termed "thermal stress effect". In this paper various types of optical glasses were studied for this effect by interferometric method using beam shaped specimens annealed under externally bending conditions. In the annealing of a bulk of optical glass, when cooling the glass through the annealing range, thermal stress is generated within the bulk of glass, resulting an uneven distribution of refractive index due to thermal stress effect. Experiments were carried out for various types of optical glasses and their corresponding values were evaluated.

Citation Download Citation

Zhao Weng-xing and Wang Da-heng "Effect Of Thermal Stress On The Homogeneity Of Optical Glasses", Proc. SPIE 0369, Max Born Centenary Conf, (16 June 1983); https://doi.org/10.1117/12.934358

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