Local refrigeration low-temperature optical external light simulation and suppression method

Abstract

This application discloses a method for simulating and suppressing stray light in locally cooled cryogenic optics, specifically relating to the field of infrared cooled imaging optics. Its features include: Step S1, establishing an optomechanical model of the locally cooled optical system; Step S2, analyzing external stray light using a ray tracing model to obtain the stray light PST curve; Step S3, performing self-radiation analysis on different components to identify characteristic components with high self-radiation; Step S4, performing structural processing on components with high self-radiation to reduce their optical absorption rate; and Step S5, re-analyzing the external stray light in the locally cooled optical system after component processing and comparing it with the initial external stray light PST. This invention achieves simultaneous elimination of external stray light and self-radiation in a locally cooled optical system through synergistic analysis of external stray light and self-radiation, providing a new approach for the synchronous suppression of stray light and self-radiation in locally cooled optical systems in future space optics.

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