MTF performance verification of an athermalized large-aperture IR optical system for space environment
| Autor: | Hyunjin Lim, Hongchul Sim, Byoung-Soo Kim, Hong-Yeon Hwang, Se-Chol Choi |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
010504 meteorology & atmospheric sciences business.industry Stray light Materials Science (miscellaneous) Physics::Optics Atmospheric temperature range 01 natural sciences Industrial and Manufacturing Engineering 010309 optics Thermoelastic damping Optics Thermal vacuum chamber Optical transfer function 0103 physical sciences Systems design Business and International Management business Realization (systems) 0105 earth and related environmental sciences Space environment |
| Zdroj: | Applied optics. 55(30) |
| ISSN: | 1539-4522 |
| Popis: | We develop an athermalized IR optical system operating in the temperature range of 10°C-30°C in vacuum. As large defocus errors can occur in IR optical systems in such an environment, we estimate the amount of defocus induced by the thermoelastic effect, thermo-optic effect, and air-to-vacuum transition. Furthermore, we measure the modulation transfer function (MTF) performance of our IR optical system in a thermal vacuum chamber. Our athermal system design and accurate estimation of the air-to-vacuum transition effect enable the realization of a stable IR optical system for a space environment, which exhibits an MTF value greater than 18%. |
| Databáze: | OpenAIRE |
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