Open AccessDMD-based hyperspectral imaging system with tunable spatial and spectral resolution
Author(s) -
Xue Deng,
Xinyan Xiao,
Yining Pan,
Guangyao Wang,
Yiting Yu
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.016995
Subject(s) - hyperspectral imaging , optics , image resolution , spectral imaging , remote sensing , digital micromirror device , full spectral imaging , pixel , computer science , imaging spectrometer , laser linewidth , field of view , materials science , artificial intelligence , spectrometer , physics , laser , geology
Pushbroom hyperspectral imaging (HSI) has been used in many areas from air to land. However, its inherent operational drawback of the bulky slit leads to a limited field of view (FOV) and high energy consumption. Accordingly, a new and versatile HSI system is proposed by employing a smart digital micromirror device (DMD) to replace the mechanical scanning component. Moreover, tunable spatial and spectral resolution is implemented through adjusting the on-chip scanning linewidth and adopting the pixel fusion method, respectively. Meanwhile, three scanning modes including rough scanning, fine scanning, and regional scanning are achieved. These multiple choices increase the system's flexibility, universality, and intelligence, which is attractive for practically different applications, especially for military and remote sensing fields in need of a large FOV, and medical and food fields in need of tunable resolution for various samples.