Polarization Snapshot Imaging Spectrometer for Infrared Range

Infrared imaging spectrometers detect and identify targets by collecting spectral image information. However, when detecting small temperature differences dynamic targets, the accuracy of infrared detection is reduced, traditional scanning structure time longer, real-time performance poor it easy to introduce motion artifacts. This paper proposes an polarization snapshot system (PSIFTIS) based on a polarizer array, lens array roof-shaped stepped micromirror. Polarized light can solve problem small-temperature-difference target recognition characterizing surface properties materials. Lens arrays utilize multi-aperture achieve targets. The obtain 4D data information, including polarization, in single measurement cycle. study completed overall optical design PSIFTIS simulation experiment using it. Finally, prototype was built laboratory spectrum carried out. experimental results show that could accurately information for target, resolution reached 7.8 cm−1 Stokes error less than 5%.