Portable 4D Snapshot Hyperspectral Imager for Fastspectral and Surface Morphology Measurements

被引：0

作者：

Luo J. ^{[1
]}

Lin Z. ^{[1
]}

Xing Y. ^{[1
]}

Forsberg E. ^{[1
]}

Wu C. ^{[1
]}

Zhu X. ^{[2
]}

Guo T. ^{[1
]}

Wang G. ^{[1
]}

Bian B. ^{[3
]}

Wu D. ^{[4
]}

He S. ^{[1
]}

机构：

[1] Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang Provincial Key Laboratory for Sensing Technologies, College of Optical Science and Engineering, Zhejiang University, Hangzhou

[2] Taizhou Agility Smart Technologies Co., Ltd, Taizhou

[3] Ningbo Electric Power Company, State Grid Corporation, Ningbo

[4] PopSmart Technology Co., Ltd, Ningbo

来源：

Progress in Electromagnetics Research | 2022年 / 173卷

基金：

中国国家自然科学基金;

关键词：

Cameras - Liquid crystals - Morphology - Cost effectiveness - Surface morphology - Spectroscopy;

D O I：

10.2528/PIER22021702

中图分类号：

学科分类号：

摘要：

A portable 4D snapshot hyperspectral imager (P4DS imager) with compact size, fast imaging time, low cost, and simple design is proposed and demonstrated. The key components of the system are a projector, a liquid crystal tunable filter (LCTF), and a camera. It has two operating modes depending on the set state of the LCTF: a 3D light measurement mode that produces a 3D point cloud reconstruction of an object and a hyperspectral imaging mode yielding spectral data. The camera imaging plane is the same for both operating modes allowing the collected spatial and spectral data to be directly fused into a 4D data set without post-processing. The P4DS imager has excellent performance with a spectral resolution of 10 nm, a spatial depth accuracy of 55.7 µm, and a total 4D imaging time of 0.8 s. 4D imaging experiments of three different samples, namely, a colored figurine, green broccoli, and a human face, are presented to demonstrate the efficiency and applicability of the system. Due to being cost-effective, portable, and good imaging performance, the proposed system is suitable for commercialization and mass production. © 2022, Electromagnetics Academy. All rights reserved.

引用

页码：25 / 36

页数：11

共 45 条

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