Compact snapshot optically replicating and remapping imaging spectrometer (ORRIS) using a focal plane continuous variable filter
Posted on 2019-03-01 - 13:53
Snapshot spectral imaging is a cutting-edge parallel acquisition technique to acquire the three-dimensional (3D) datacube (x, y, λ) in real time. In this letter, a novel snapshot spectral imaging technique, Optically Replicating and Remapping Imaging Spectrometer (ORRIS), is presented. It is based on the combination of the shifting of subimages replicated by a specially designed lenslet array (LA) and the filtering of each subimage by a focal plane continuous variable filter (CVF). The 3D datacube is recovered just using a simple image remapping process. The use of the LA and the focal plane CVF makes the system compact and miniature, and achieves hyperspectral imaging. A handheld proof-of-principle prototype is built. The ORRIS prototype covers a Vis/NIR wavelength region 380 to 860 nm with 80 spectral channels with a spatial resolution of 400 × 400 pixels. The prototype is validated by measuring outdoor static and dynamic scenes.
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Mu, Tingkui; Han, Feng; Bao, Donghao; Zhang, Chunmin; Liang, Rongguang (2019). Compact snapshot optically replicating and remapping imaging spectrometer (ORRIS) using a focal plane continuous variable filter. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4352630.v1
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AUTHORS (5)
TM
Tingkui Mu
FH
Feng Han
DB
Donghao Bao
CZ
Chunmin Zhang
RL
Rongguang Liang