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Proceedings Paper

A novel and compact spectral imaging system based on two curved prisms
Author(s): Yunfeng Nie; Xiangli Bin; Jinsong Zhou; Yang Li
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Paper Abstract

As a novel detection approach which simultaneously acquires two-dimensional visual picture and one-dimensional spectral information, spectral imaging offers promising applications on biomedical imaging, conservation and identification of artworks, surveillance of food safety, and so forth. A novel moderate-resolution spectral imaging system consisting of merely two optical elements is illustrated in this paper. It can realize the function of a relay imaging system as well as a 10nm spectral resolution spectroscopy. Compared to conventional prismatic imaging spectrometers, this design is compact and concise with only two special curved prisms by utilizing two reflective surfaces. In contrast to spectral imagers based on diffractive grating, the usage of compound-prism possesses characteristics of higher energy utilization and wider free spectral range. The seidel aberration theory and dispersive principle of this special prism are analyzed at first. According to the results, the optical system of this design is simulated, and the performance evaluation including spot diagram, MTF and distortion, is presented. In the end, considering the difficulty and particularity of manufacture and alignment, an available method for fabrication and measurement is proposed.

Paper Details

Date Published: 30 September 2013
PDF: 8 pages
Proc. SPIE 8842, Novel Optical Systems Design and Optimization XVI, 884215 (30 September 2013); doi: 10.1117/12.2031090
Show Author Affiliations
Yunfeng Nie, Academy of Opto-Electronics (China)
Xiangli Bin, Academy of Opto-Electronics (China)
Jinsong Zhou, Academy of Opto-Electronics (China)
Yang Li, Academy of Opto-Electronics (China)

Published in SPIE Proceedings Vol. 8842:
Novel Optical Systems Design and Optimization XVI
G. Groot Gregory; Arthur J. Davis, Editor(s)

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