Design and modeling of a compact imaging spectrometer

Details Design and modeling of a compact imaging spectrometer Design and modeling of a compact imaging spectrometer

Nov 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995opten..34.3217f&link_type=abstract

Optical Engineering 34(11), 3217-3221, Brian J. Thompson; Ed.

Physics

Optics

Scientific paper

A novel low-f-number, wide-field-of-view imaging spectrometer has been designed for measuring the day-glow spectrum over the wavelength range of 260 to 870 nm with spectral resolutions of 0.5 and 0.03 nm. The zero-obstruction all-reflective design is an f/2.0 imaging spectrograph using commercial gratings. The field of view along the spatial direction is 6 deg, with a spatial resolution of 0.1 mrad. The spectrometer is designed to work with a commercially available 1037 X 1340 CCD detector with 6.8 X 6.8-micrometers pixel size. The imaging spectrometer optics consists of an aspheric toroidal telescope, a slit, an aspheric toroidal collimator, a planar reflective grating, and three off-axis higher-order aspheric imaging mirrors. Significant improvements in the performance have been achieved by introducing aspheric toroidal elements in the design. The weight and size have been reduced by a factor of 20 as compared to previous similar instruments. A virtual prototype of the instrument has also been modeled by using integrated optical and mechanical design software.

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