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Optical Engineering

Design of stray light suppressed digital micromirror device-based spectrometer with compound parabolic concentrator
Author(s): Xiangqian Quan; Hua Liu; Zhenwu Lu; Yongqian Quan; Xiaoduo Wang; Xinrong Hu; Hetuo Chen; Xiangquan Tan; Heyang Bu
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Paper Abstract

To suppress the stray light caused by the diffraction and scattered light of a digital micromirror device (DMD) in a DMD-based spectrometer, a new concentrator system with a compound parabolic concentrator (CPC) is presented, which has the advantage that all stray light beyond the acceptance angle can be rejected with the most compact device available. The diffraction of DMD is explored to determine the acceptance angle, and the parameters of the concentrator system are analyzed to determine the geometric concentration ratio. The simulation results show that the spectrum concentration efficiency of the CPC is 98.7%, that the stray light concentration efficiency from the DMD is 36.3%, and that the stray light concentration efficiency beyond the acceptance angle is 0.00%. Finally, according to the discussion about tolerance on the CPC, a conclusion can be drawn that the new DMD-based spectrometer with CPC is feasible and significant in suppressing the stray light.

Paper Details

Date Published: 2 November 2015
PDF: 9 pages
Opt. Eng. 54(11) 115101 doi: 10.1117/1.OE.54.11.115101
Published in: Optical Engineering Volume 54, Issue 11
Show Author Affiliations
Xiangqian Quan, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Univ. of Chinese Academy of Sciences (China)
Hua Liu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Zhenwu Lu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Yongqian Quan, CRRC Corp. Ltd. (China)
Xiaoduo Wang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Univ. of Chinese Academy of Sciences (China)
Xinrong Hu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Univ. of Chinese Academy of Sciences (China)
Hetuo Chen, Univ. of Electronic Science and Technology of China (China)
Xiangquan Tan, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Heyang Bu, Univ. of Chinese Academy of Sciences (China)


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