The Influence of Temperature Testing on the Technical Data of Cementing Technology

Abstract:

The problematic issues connected with the optical details deformations that arise during the temperature tests of cemented assemblies are considered. Climatic tests of optical devices after assembly result in a change of technical product characteristics. The research problem is to define how N and ∆N of surfaces of cemented optical assemblies are changing after the temperature testing. The research objects are plane convex lenses fabricated of LK7 (LZOS) glass brand and plane concave lenses - of TF7 (LZOS). Before cementing, the bounded surfaces cleaning by the hydromechanical method in the clean room has been purged. The temperature testing of samples is held at 22, 50 and 65 °C. The effect of temperature on a surface deformation of cemented optical assemblies is experimentally established. The comparison of effect of optical cements OK72FT₅ and OK72FT₁₅ on the optical surfaces deformation is carried out. In this paper we have compared the results of shape accuracy of the external surfaces of optical assemblies and the flat surfaces. Interferograms of lenses after heat treatment of optical assemblies are presented. It is determined that the cement polymerization temperature equals or higher than the test temperature.

• Periodical: Solid State Phenomena (Volume 299)
• Pages: 311-315
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.299.311
• Online since: January 2020
• Authors: Dmitry Kruchinin, Liana Garayshina, Elena P. Farafontova*
• Keywords: Cementing, Hydromechanical Method, Optical Assemblies, Optical Glass, Optical Surface Deformation

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