Compact miniature snapshot imaging spectrometry using continuous variable filter

Tingkui Mu; Feng Han; Donghao Bao

doi:10.1117/12.2521256

12 March 2019 Compact miniature snapshot imaging spectrometry using continuous variable filter

Tingkui Mu, Feng Han, Donghao Bao

Proceedings Volume 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application; 110232L (2019) https://doi.org/10.1117/12.2521256
Event: Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 2018, Xi'an, China

Abstract

Snapshot spectral imaging is a cutting-edge parallel acquisition technology for mapping the 3D datacube (2D spectral and 1D spatial information) of a scene in real time. Herein, we present a compact, miniature, snapshot Optically Replicating and Remapping Imaging Spectrometer (ORRIS). Its principle is based on the shifting of subimages replicated by a specially organized lenslet array and the filtering of each subimage by a continuous variable filter (CVF). The 3D datacube is recovered just using a simple image remapping process. The use of the lenslet array and the CVF makes the system very compact and miniature. A handheld proof-of-principle prototype is built in our laboratory by just using commercial-off-the-shelf products. It covers a wavelength region 360 nm to 860 nm with 80 spectral channels with a spatial resolution of 400 × 400 pixels. The volume of prototype is about 230 mm (length) × 70 mm (width) × 70 mm (height) and the weight is about 1.0 kg for finite imaging, and it will become 50 mm (length) × 70 mm (width) × 70 mm (height) and 0.5 kg for infinite imaging. The prototype is verified by measuring outdoor static and dynamic scenes.

Citation Download Citation

Tingkui Mu, Feng Han, and Donghao Bao "Compact miniature snapshot imaging spectrometry using continuous variable filter", Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110232L (12 March 2019); https://doi.org/10.1117/12.2521256

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