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10 July 2018 Simulation analysis of the photographic noncoincidence between fiber ends and light spots under integrating sphere light source
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Abstract
Fiber spectroscopic telescopes, such as LAMOST, require accurate alignment between the fiber ends and their corresponding celestial targets. In the measurement, the center of a light spot obtained through gray centroid method is regarded as the center of a fiber end. Nevertheless, we’ve observed that these two centers don’t coincide under wide visual angles when integrating sphere (Built in light source for bromine tungsten lamp) is used as light source. Basing on these phenomena we observed, this paper proposes a hypothesis that the maximum intensity of the light transmitted by the optical fiber to the end of the optical fiber is outside the end of the fiber. The intensity distribution at the output end of fibers under integrating sphere light source is simulated in this study. Keywords: accurate alignment
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Juan Luo, Yonggang Gu, Ye Zhu, and Chao Zhai "Simulation analysis of the photographic noncoincidence between fiber ends and light spots under integrating sphere light source", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107064B (10 July 2018); https://doi.org/10.1117/12.2311818
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