Abstract
We present the optical simulation and design concept of a spatial heterodyne spectrometer (SHS) for mobile applications. A framework using Python and Zemax OpticStudio was developed for the optical system design and automated tolerance analysis from the incoming light, the spectrometer and the imaging lens system to the 2D detector. The spectrometer design and the fabrication methods were validated using a test setup in the VIS spectral range for a future SHS fabrication in the LWIR spectral band operating on small unmanned aerial vehicles (SUAV) for remote sensing applications.
Highlights
In recent years, the demand for small and robust sensors for mobile applications has increased due to the further development of field robotics
We present the optical simulation and design concept of a spatial heterodyne spectrometer (SHS) for mobile applications
The spectrometer design and the fabrication methods were validated using a test setup in the VIS spectral range for a future SHS fabrication in the LWIR spectral band operating on small unmanned aerial vehicles (SUAV) for remote sensing applications
Summary
The demand for small and robust sensors for mobile applications has increased due to the further development of field robotics. For hyperspectral imaging applications these systems combine spatial data with spectral signatures. The miniaturization of hyperspectral sensors enables the integration on small autonomous robotic systems and allows new applications in remote sensing. For applications in field robotics and processing industry, optical spectrometers will operate in harsh environments under extreme environmental conditions. The reliable operation on mobile robots demands small, lightweight and ruggedized hyperspectral sensors. Filter-based spectral cameras fulfill many criteria, but with the lack of spectral fingerprint capability because of their low spectral resolution, robust spectrometer designs are required. A stationary FourierTransform Spectrometer design in a push-broom configuration combines high optomechanical stability, large entrance aperture and high spectral resolution for mobile remote sensing applications
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