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Proceedings Paper

Optical design of MWIR imaging spectrometer with a cold slit
Author(s): Shiyao Zhou; Yueming Wang; Liqun Qian; Liyin Yuan; Jianyu Wang
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Paper Abstract

MWIR imaging spectrometer is promising in detecting spectral signature of high temperature object such as jet steam, guided missile and explosive gas. This paper introduces an optical design of a MWIR imaging spectrometer with a cold slit sharply reducing the stray radiation from exterior environment and interior structure. The spectrometer is composed of a slit, a spherical prism as disperser, two concentric spheres and a correction lens. It has a real entrance pupil to match the objective and for setting the infrared cold shield near the slit and a real exit pupil to match the cold shield of the focal plane array (FPA). There are two cooled parts, one includes the aperture stop and slit, and the other is the exit pupil and the FPA with two specially positioned cooled shields. A detailed stray radiation analysis is represented which demonstrates the outstanding effect of this system in background radiation restraint.

Paper Details

Date Published: 10 May 2016
PDF: 8 pages
Proc. SPIE 9860, Hyperspectral Imaging Sensors: Innovative Applications and Sensor Standards 2016, 98600B (10 May 2016); doi: 10.1117/12.2219427
Show Author Affiliations
Shiyao Zhou, Shanghai Institute of Technical Physics (China)
Univ. of Chinese Academy of Sciences (China)
Yueming Wang, Shanghai Institute of Technical Physics (China)
Liqun Qian, Shanghai Institute of Technical Physics (China)
Liyin Yuan, Shanghai Institute of Technical Physics (China)
Jianyu Wang, Shanghai Institute of Technical Physics (China)


Published in SPIE Proceedings Vol. 9860:
Hyperspectral Imaging Sensors: Innovative Applications and Sensor Standards 2016
David P. Bannon, Editor(s)

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