| A Light Source System of Multi-star Simulator with Adjustable Background and Controllable Magnitude |
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| 作者姓名： | SUN Gaofei LIU Shi ZHANG Guoyu ZHANG Yu LEI Jie MA Yiyuan |
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| 作者单位： | 1. College of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022; |
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| 基金项目： | Supported by Jilin Province Key Scientific and Technological Projects (20160204008GX), National Key Laboratory Fund Project (61420020210162002) and Changchun University of Science and Technology Innovation Fund (XJJLG-2016-15) |
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| 摘 要： | A light source of multi-star simulator capable of background adjustment and magnitude control has been designed. Two integrating spheres are employed as the star-point light source and the background light source respectively. A beam splitter prism has been designed to serve as the beam combiner for the star-point and the background light sources, and a mathematical model has been constructed respectively to compute the light flux of the two integrating spheres. A magnitude testing system and a background testing system have been created using low-light illuminometer, luminance meter, and testing instruments to measure the star-point magnitude and the background luminance of the multi-star simulator. The test results suggest that the star-point magnitude is adjustable from 0 to +5mv, with a simulation precision superior to ±0.026mv. The maximum background luminance is 3.8×105 cd·m-2, and the minimum background luminance is 6.4×10-2 cd·m-2. The designed light source system can meet the requirements for simulating the stellar map with a sky background.
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| 关 键 词： | Adjustable background Controllable magnitude Multi-Star simulator Light source |
| 收稿时间： | 2016-08-08 |
A Light Source System of Multi-star Simulator with Adjustable Background and Controllable Magnitude |
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| SUN Gaofei,LIU Shi,ZHANG Guoyu,ZHANG Yu,LEI Jie,MA Yiyuan.A Light Source System of Multi-star Simulator with Adjustable Background and Controllable Magnitude[J].Chinese Journal of Space Science,2017,37(6):760-765. |
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| Affiliation: | 1. College of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022;2. Optical Measurement and Control Instrumentation, Jilin Province Engineering Research Center, Changchun 130022;3. Key Laboratory of Space System Simulation, Beijing 100853 |
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| Abstract: | A light source of multi-star simulator capable of background adjustment and magnitude control has been designed. Two integrating spheres are employed as the star-point light source and the background light source respectively. A beam splitter prism has been designed to serve as the beam combiner for the star-point and the background light sources, and a mathematical model has been constructed respectively to compute the light flux of the two integrating spheres. A magnitude testing system and a background testing system have been created using low-light illuminometer, luminance meter, and testing instruments to measure the star-point magnitude and the background luminance of the multi-star simulator. The test results suggest that the star-point magnitude is adjustable from 0 to +5mv, with a simulation precision superior to ±0.026mv. The maximum background luminance is 3.8×105 cd·m-2, and the minimum background luminance is 6.4×10-2 cd·m-2. The designed light source system can meet the requirements for simulating the stellar map with a sky background. |
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