The temperature disturbance and optical system performance analysis

Xu Yan; Xiaoli Ren; Jia Zhai

doi:10.1117/12.2505009

16 January 2019 The temperature disturbance and optical system performance analysis

Xu Yan, Xiaoli Ren, Jia Zhai

Proceedings Volume 10838, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 108380O (2019) https://doi.org/10.1117/12.2505009
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China

Abstract

Optical system performance is easily affected by various surrounding conditions, especially the precision optical system, such as interferometer, goniometer, are sensitive to temperature fluctuations. Temperature is an important parameter of the air refractive index. Its fluctuation causes unsteady changes in air density and hence index of refraction changes. So the temperature of the detection room must be controlled in reasonable scope. But the heat released from devices, staff members and luminaires is unavoidable. This study calculates fluid field variations induced by temperature, obtains the air density and temperature distribution by Computational Fluid Dynamics (CFD) software, and then the fluctuations of refractive index are calculated from the density field. The optical path difference (OPD) is then given with density changes, also the OPD RMS values are computed. These data can quantify the influence degree of temperature changes and improve optical design.

Citation Download Citation

Xu Yan, Xiaoli Ren, and Jia Zhai "The temperature disturbance and optical system performance analysis", Proc. SPIE 10838, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 108380O (16 January 2019); https://doi.org/10.1117/12.2505009

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KEYWORDS

Refractive index

Temperature metrology

Fusion energy

Microfluidics

Control systems

Light

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