Electrically tunable planar liquid-crystal singlets for simultaneous spectrometry and imaging.

ABSTRACT: Conventional hyperspectral cameras cascade lenses and spectrometers to acquire the spectral datacube, which forms the fundamental framework for hyperspectral imaging. However, this cascading framework involves tradeoffs among spectral and imaging performances when the system is driven toward miniaturization. Here, we propose a spectral singlet lens that unifies optical imaging and computational spectrometry functions, enabling the creation of minimalist, miniaturized and high-performance hyperspectral cameras. As a paradigm, we capitalize on planar liquid crystal optics to implement the proposed framework, with each liquid-crystal unit cell acting as both phase modulator and electrically tunable spectral filter. Experiments with various targets show that the resulting millimeter-scale hype

SUBMITTER: Zhou Z 

PROVIDER: S-EPMC11381520 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature