Low-voltage driving high-resistance liquid crystal micro-lens with electrically tunable depth of field for the light field imaging system
Abstract Light field imaging (LFI) based on Liquid crystal microlens array (LC MLAs) are emerging as a significant area for 3D imaging technology in the field of upcoming Internet of things and artificial intelligence era. However, in scenes of LFI through conventional MLAs, such as biological imagi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-21172-w |
| _version_ | 1811336249545326592 |
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| author | Wenwen Wang Wandi Chen Yuyan Peng Yongai Zhang Qun Yan Tailiang Guo Xiongtu Zhou Chaoxing Wu |
| author_facet | Wenwen Wang Wandi Chen Yuyan Peng Yongai Zhang Qun Yan Tailiang Guo Xiongtu Zhou Chaoxing Wu |
| author_sort | Wenwen Wang |
| collection | DOAJ |
| description | Abstract Light field imaging (LFI) based on Liquid crystal microlens array (LC MLAs) are emerging as a significant area for 3D imaging technology in the field of upcoming Internet of things and artificial intelligence era. However, in scenes of LFI through conventional MLAs, such as biological imaging and medicine imaging, the quality of imaging reconstruction will be severely reduced due to the limited depth of field. Here, we are proposed a low-voltage driving LC MLAs with electrically tunable depth of field (DOF) for the LFI system. An aluminum-doped zinc oxide (AZO) film was deposited on the top of the hole-patterned driven-electrode arrays and used as a high resistance (Hi-R) layer, a uniform gradient electric field was obtained across the sandwiched LC cell. Experimental results confirm that the proposed LC MLAs possess high-quality interference rings and tunable focal length at a lower working voltage. In addition, the focal lengths are tunable from 3.93 to 2.62 mm and the DOF are adjustable from 15.60 to 1.23 mm. The experiments demonstrated that the LFI system based on the proposed structure can clearly capture 3D information of the insets with enlarged depths by changing the working voltage and driving frequency, which indicates that the tunable DOF LC MLAs have a potential application prospects for the biological and medical imaging. |
| first_indexed | 2024-04-13T17:36:40Z |
| format | Article |
| id | doaj.art-1a0a1e6d80204e238b8a6fe9809fa340 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-13T17:36:40Z |
| publishDate | 2022-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-1a0a1e6d80204e238b8a6fe9809fa3402022-12-22T02:37:19ZengNature PortfolioScientific Reports2045-23222022-10-0112111110.1038/s41598-022-21172-wLow-voltage driving high-resistance liquid crystal micro-lens with electrically tunable depth of field for the light field imaging systemWenwen Wang0Wandi Chen1Yuyan Peng2Yongai Zhang3Qun Yan4Tailiang Guo5Xiongtu Zhou6Chaoxing Wu7College of Physics and Information Engineering, Fuzhou UniversityCollege of Physics and Information Engineering, Fuzhou UniversityCollege of Physics and Information Engineering, Fuzhou UniversityCollege of Physics and Information Engineering, Fuzhou UniversityCollege of Physics and Information Engineering, Fuzhou UniversityCollege of Physics and Information Engineering, Fuzhou UniversityCollege of Physics and Information Engineering, Fuzhou UniversityCollege of Physics and Information Engineering, Fuzhou UniversityAbstract Light field imaging (LFI) based on Liquid crystal microlens array (LC MLAs) are emerging as a significant area for 3D imaging technology in the field of upcoming Internet of things and artificial intelligence era. However, in scenes of LFI through conventional MLAs, such as biological imaging and medicine imaging, the quality of imaging reconstruction will be severely reduced due to the limited depth of field. Here, we are proposed a low-voltage driving LC MLAs with electrically tunable depth of field (DOF) for the LFI system. An aluminum-doped zinc oxide (AZO) film was deposited on the top of the hole-patterned driven-electrode arrays and used as a high resistance (Hi-R) layer, a uniform gradient electric field was obtained across the sandwiched LC cell. Experimental results confirm that the proposed LC MLAs possess high-quality interference rings and tunable focal length at a lower working voltage. In addition, the focal lengths are tunable from 3.93 to 2.62 mm and the DOF are adjustable from 15.60 to 1.23 mm. The experiments demonstrated that the LFI system based on the proposed structure can clearly capture 3D information of the insets with enlarged depths by changing the working voltage and driving frequency, which indicates that the tunable DOF LC MLAs have a potential application prospects for the biological and medical imaging.https://doi.org/10.1038/s41598-022-21172-w |
| spellingShingle | Wenwen Wang Wandi Chen Yuyan Peng Yongai Zhang Qun Yan Tailiang Guo Xiongtu Zhou Chaoxing Wu Low-voltage driving high-resistance liquid crystal micro-lens with electrically tunable depth of field for the light field imaging system Scientific Reports |
| title | Low-voltage driving high-resistance liquid crystal micro-lens with electrically tunable depth of field for the light field imaging system |
| title_full | Low-voltage driving high-resistance liquid crystal micro-lens with electrically tunable depth of field for the light field imaging system |
| title_fullStr | Low-voltage driving high-resistance liquid crystal micro-lens with electrically tunable depth of field for the light field imaging system |
| title_full_unstemmed | Low-voltage driving high-resistance liquid crystal micro-lens with electrically tunable depth of field for the light field imaging system |
| title_short | Low-voltage driving high-resistance liquid crystal micro-lens with electrically tunable depth of field for the light field imaging system |
| title_sort | low voltage driving high resistance liquid crystal micro lens with electrically tunable depth of field for the light field imaging system |
| url | https://doi.org/10.1038/s41598-022-21172-w |
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