Snapshot multispectral polarization imager using a narrowband reflection filter array

Multispectral polarization imaging technology holds significance in various fields. This study proposes a multispectral polarization imaging scheme based on a narrowband reflection filter array (RFA), incorporating spatial dispersion that leverages the RFA to segment optical paths for multispectral image acquisition. The RFA was analyzed and designed, and a snapshot multispectral polarization imager was constructed. The feasibility of the spatial dispersion structure was experimentally validated. The proposed method can capture spectral polarization images at video frame rates with relatively consistent imaging quality across different bands and high spatial resolution, providing, to our knowledge, a new technical approach for realizing real-time multispectral polarization imagers.