Journal
Scientific and technical journal «Priborostroenie»
UDK535.015
Issue:6 (61)
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INFLUENCE OF THERMOBARIC PROPERTIES OF THE ENVIRONMENT OF OPTICAL INSTRUMENTS OPERATION ON POSITION AND SIZE OF THE IMAGE
Annotation
The problem of analysis of the effect of temperature variations on parameters of optical systems is considered. Relations which determine position and size of the image under the influence of changes in temperature and pressure on the refractive index of the lens material are derived. It is shown that when the lens spherical surface rests on the base surface of the end frame or housing, the changes in the diameter of the contact circle of the contacting parts caused by the temperature fluctuations have a much greater effect than changes in the shape of the surface of the optical element. It is demonstrated that recalculation of the refractive index of the lens material in development of optical systems for instruments designed for the use in outer space is necessary.
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