Colorimetric Thermography by a Long‐Infrared Dual‐Band Metalens
Abstract Infrared (IR) radiation thermography is extensively utilized in diverse fields due to its non‐contact capability. Nevertheless, its effectiveness is often compromised by the significant emissivity variations among different objects, limiting its application to specific setups or focused obj...
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Wiley
2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202408683 |
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| author | Zhendong Luo Peng Zhang Huwang Hou Yiming Li Binzhao Li Yanji Yi Lianjie Xu Ting Meng Zihan Geng Mu Ku Chen Yang Zhao |
| author_facet | Zhendong Luo Peng Zhang Huwang Hou Yiming Li Binzhao Li Yanji Yi Lianjie Xu Ting Meng Zihan Geng Mu Ku Chen Yang Zhao |
| author_sort | Zhendong Luo |
| collection | DOAJ |
| description | Abstract Infrared (IR) radiation thermography is extensively utilized in diverse fields due to its non‐contact capability. Nevertheless, its effectiveness is often compromised by the significant emissivity variations among different objects, limiting its application to specific setups or focused object types. Colorimetric thermography is introduced as an alternative emissivity‐independent method of radiation thermometry. This technique involves measuring radiance across two or more spectral bands and calculating the object's temperature based on the signal ratio, thereby mitigating emissivity effects under certain conditions. However, this method has the trade‐off of necessitating bulky optical systems, complex filter imaging configurations, and sensor structures. To meet the requirements of IR thermography for compact structure, lightweight design, and customizability, a dual‐band metalens is developed for the IR colorimetric thermography. The central wavelengths targeted are 9.5 and 12.5 µm. The dual‐band IR imaging by the fabricated dual‐band metalens is demonstrated, and the colorimetric thermography of low‐emissivity objects is performed without presetting emissivity values. This approach significantly eliminates measurement errors associated with emissivity by an average of 50.16% across a temperature range of 60–180 °C. This innovation paves the way for dynamic and multi‐target thermography using compact IR systems in complex environments. |
| format | Article |
| id | doaj-art-9607d84f11ed4b0fbba126f3cede51d4 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-9607d84f11ed4b0fbba126f3cede51d42025-01-13T15:29:43ZengWileyAdvanced Science2198-38442025-01-01122n/an/a10.1002/advs.202408683Colorimetric Thermography by a Long‐Infrared Dual‐Band MetalensZhendong Luo0Peng Zhang1Huwang Hou2Yiming Li3Binzhao Li4Yanji Yi5Lianjie Xu6Ting Meng7Zihan Geng8Mu Ku Chen9Yang Zhao10CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Hefei 230022 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Hefei 230022 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Instrumentation University of Science and Technology of China Hefei 230026 ChinaInstitute of Data and Information Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen Guangdong 518071 ChinaDepartment of Electrical Engineering City University of Hong Kong Kowloon Hong Kong SAR 999077 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Instrumentation University of Science and Technology of China Hefei 230026 ChinaAbstract Infrared (IR) radiation thermography is extensively utilized in diverse fields due to its non‐contact capability. Nevertheless, its effectiveness is often compromised by the significant emissivity variations among different objects, limiting its application to specific setups or focused object types. Colorimetric thermography is introduced as an alternative emissivity‐independent method of radiation thermometry. This technique involves measuring radiance across two or more spectral bands and calculating the object's temperature based on the signal ratio, thereby mitigating emissivity effects under certain conditions. However, this method has the trade‐off of necessitating bulky optical systems, complex filter imaging configurations, and sensor structures. To meet the requirements of IR thermography for compact structure, lightweight design, and customizability, a dual‐band metalens is developed for the IR colorimetric thermography. The central wavelengths targeted are 9.5 and 12.5 µm. The dual‐band IR imaging by the fabricated dual‐band metalens is demonstrated, and the colorimetric thermography of low‐emissivity objects is performed without presetting emissivity values. This approach significantly eliminates measurement errors associated with emissivity by an average of 50.16% across a temperature range of 60–180 °C. This innovation paves the way for dynamic and multi‐target thermography using compact IR systems in complex environments.https://doi.org/10.1002/advs.202408683colorimetric thermographydual‐band metalensemissivityinfrared detection |
| spellingShingle | Zhendong Luo Peng Zhang Huwang Hou Yiming Li Binzhao Li Yanji Yi Lianjie Xu Ting Meng Zihan Geng Mu Ku Chen Yang Zhao Colorimetric Thermography by a Long‐Infrared Dual‐Band Metalens Advanced Science colorimetric thermography dual‐band metalens emissivity infrared detection |
| title | Colorimetric Thermography by a Long‐Infrared Dual‐Band Metalens |
| title_full | Colorimetric Thermography by a Long‐Infrared Dual‐Band Metalens |
| title_fullStr | Colorimetric Thermography by a Long‐Infrared Dual‐Band Metalens |
| title_full_unstemmed | Colorimetric Thermography by a Long‐Infrared Dual‐Band Metalens |
| title_short | Colorimetric Thermography by a Long‐Infrared Dual‐Band Metalens |
| title_sort | colorimetric thermography by a long infrared dual band metalens |
| topic | colorimetric thermography dual‐band metalens emissivity infrared detection |
| url | https://doi.org/10.1002/advs.202408683 |
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