Optical design and tolerancing of a hyperspectral imaging spectrometer

Chang Liu; Christoph Straif; Thomas Flügel-Paul; Uwe D. Zeitner; Herbert Gross

doi:10.1117/12.2238758

27 September 2016 Optical design and tolerancing of a hyperspectral imaging spectrometer

Chang Liu, Christoph Straif, Thomas Flügel-Paul, Uwe D. Zeitner, Herbert Gross

Proceedings Volume 9947, Current Developments in Lens Design and Optical Engineering XVII; 994703 (2016) https://doi.org/10.1117/12.2238758
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

A hyperspectral imaging spectrometer covering the wavelength range from 420 nm to 1000 nm is designed for the purpose of monitoring Earth’s environmental change. It has an entrance slit length of 24 μm, f/# of 3, smile and keystone distortion smaller than 20% of the pixel pitch and a spectral resolution of 6.5 nm. We design and review thirteen systems including one Offner system, two Schwarzschild systems and ten TMA systems for such specifications. Freeform surface and aspheric surface are used in some of the systems to achieve the required system parameters. With all system performance being summarized and evaluated, advantages and disadvantages of three different system types are compared. We down select two systems for further fine adjustments and tolerancing analysis. Final systems with superior performance and detailed tolerancing analysis are given at the end.

Citation Download Citation

Chang Liu, Christoph Straif, Thomas Flügel-Paul, Uwe D. Zeitner, and Herbert Gross "Optical design and tolerancing of a hyperspectral imaging spectrometer", Proc. SPIE 9947, Current Developments in Lens Design and Optical Engineering XVII, 994703 (27 September 2016); https://doi.org/10.1117/12.2238758

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