Headwall produces application-specific holographic diffraction gratings, spectral modules, and spectral instruments that manage the acquisition of reflected light. Spectral ranges run from the UV-VIS to the Midwave Infrared (MWIR).
Using these application-specific diffraction gratings, Headwall's spectral imaging sensors use an elegant yet simple design approach called pushbroom, or line-scanning. The acquisition of spectral data (in the form of a hyperspectral data cube) is done on a frame-by-frame basis, with a full spectrum of data for every spatial pixel in the field of view.
Benefits of this approach: