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Proceedings Paper

Effect Of Thermal Stress On The Homogeneity Of Optical Glasses
Author(s): Zhao Weng-xing; Wang Da-heng
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Paper 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.

Paper Details

Date Published: 16 June 1983
PDF: 6 pages
Proc. SPIE 0369, Max Born Centenary Conf, (16 June 1983); doi: 10.1117/12.934358
Show Author Affiliations
Zhao Weng-xing, Academia Sinica (China)
Wang Da-heng, Academia Sinica (China)

Published in SPIE Proceedings Vol. 0369:
Max Born Centenary Conf
M. John Colles; D. William Swift, Editor(s)

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