期刊
FRONTIERS IN PHYSICS
卷 10, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2022.1058733
关键词
deep-sea exploration; hyperspectral image; optical design; optical system; underwater hyperspectral imaging
资金
- Key Research and Development Program of Shandong Province [2020CXGC010706]
- National Natural Science Foundation of China [U2006209, 41575023, U2106210]
- Scientific research funds of Taishan scholars [202105033008]
- Excellent Researcher plan project [202112003]
- Key deployment project of the Marine Science Research Centre of the Chinese Academy of Sciences [COMS2019J04]
- National Key Research and Development Program of China [2019YFC1408300, 2019YFC1408301, 2018YFF01011003]
- Consulting Research Project of the Chinese Academy of Engineering [2020-XZ-5-03]
Hyperspectral imaging technology combines spectral technology and imaging technology to effectively obtain spectral and spatial information about underwater targets. To meet the requirements of deep-sea exploration, an underwater hyperspectral imaging system with good imaging quality and spectral detection capability was developed.
As a technology that combines spectral technology and imaging technology, hyperspectral imaging technology can obtain the spectral and spatial information about the targets effectively. Hence, the underwater hyperspectral imaging technology has a fast development since it was first used underwater. Many kinds of hyperspectral imagers used for underwater detection at different depths were developed. However, the underwater hyperspectral imagers used at deep sea were rarely reported while the required detection depth increased. To satisfy the deep-sea exploration requirements, an underwater hyperspectral imaging system was designed. An optical system with a low F-number and a compact structure was first designed. The F-number of the system is 2.5. The focal length of the objective lens is 25 mm, and the field of view of the objective lens is 35.2 degrees.The wavelength range of the system is from 400 to 1000 nm, and the spectral resolution of the spectrometer is better than 3 nm. The instrument cabin and other structures for waterproofing were designed. A minicomputer used for control communication, data acquisition, and processing was equipped in the actual system. The isolation performance and imaging quality were tested in the laboratory environment. According to the test result, the system has a good imaging quality and spectral detection capability. Also, the system can be used at 6000 m underwater, which may provide a new feasible technical scheme for deep-sea exploration.
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