Hyperspectral sensing using the Linear Etalon Imaging Spectral Array

The Linear Etalon Imaging Spectral Array (LEISA) represents a new class of hyperspectral cameras which use non- dispersive thin film filters as wavelength selective elements. The simplicity and versatility of these instruments make them attractive for spaceflight use. LEISA currently operates in the shortwave IR spectral region, but the design is adaptable to operation at wavelengths from visible to longwave IR.