Abstract

One of the problems in designing instrumentation systems operating over a wide temperature range is considered in this study, i.e., the prevention of thermal defocusing of the optical components in the system under environmental influence. Several approaches can be used to achieve athermalization. Some of them compensate for thermal defocusing, while others compensate for the deformation and change in optical and structural parameters owing to changes in temperature. Methods from both groups are applied in this study to ensure a high degree of athermalization. The design and development of an athermalized optical system comprising an objective and a photodetector in a single housing is conducted to create an instrument to monitor displacements in hydrodynamic structures operating over a wide temperature range.

© 2020 Optical Society of America

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