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Optical Engineering

Optical design of a compact imaging spectrometer for planetary mineralogy
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Paper Abstract

We present the design of a compact, wide-angle pushbroom imaging spectrometer suitable for exploration of solar system bodies from low orbit. The spectrometer is based on a single detector array with a broadband response that covers the range 400 to 3000 nm and provides a spectral sampling of 10 nm. The telescope has a 24-deg field of view with 600 spatially resolved elements (detector pixels). A specially designed convex diffraction grating permits optimization of the signal-to-noise ratio through the entire spectral band. Tolerances and design parameters permit the achievement of high uniformity of response through field and wavelength. The spectrometer performance is evaluated in terms of predicted spectral and spatial response functions and from the point of view of minimizing their variation through field and wavelength. The design serves as an example for illustrating the design principles specific to this type of system.

Paper Details

Date Published: 1 June 2007
PDF: 9 pages
Opt. Eng. 46(6) 063001 doi: 10.1117/1.2749499
Published in: Optical Engineering Volume 46, Issue 6
Show Author Affiliations
Pantazis Z Mouroulis, Jet Propulsion Lab. (United States)
R. Glenn Sellar, Jet Propulsion Lab. (United States)
Daniel W. Wilson, Jet Propulsion Lab. (United States)
James J. Shea, Swales Aerospace (United States)
Robert O. Green, Jet Propulsion Lab. (United States)

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