A novel and compact spectral imaging system based on two curved prisms

Yunfeng Nie; Xiangli Bin; Jinsong Zhou; Yang Li

doi:10.1117/12.2031090

30 September 2013 A novel and compact spectral imaging system based on two curved prisms

Yunfeng Nie, Xiangli Bin, Jinsong Zhou, Yang Li

Proceedings Volume 8842, Novel Optical Systems Design and Optimization XVI; 884215 (2013) https://doi.org/10.1117/12.2031090
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

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.

Citation Download Citation

Yunfeng Nie, Xiangli Bin, Jinsong Zhou, and Yang Li "A novel and compact spectral imaging system based on two curved prisms", Proc. SPIE 8842, Novel Optical Systems Design and Optimization XVI, 884215 (30 September 2013); https://doi.org/10.1117/12.2031090

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KEYWORDS

Prisms

Imaging systems

Imaging spectroscopy

Optics manufacturing

Image quality

Modulation transfer functions

Sensors

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