A wide-field and high-resolution lensless compound eye microsystem for real-time target motion perception
Abstract Optical measurement systems suffer from a fundamental tradeoff between the field of view (FOV), the resolution and the update rate. A compound eye has the advantages of a wide FOV, high update rate and high sensitivity to motion, providing inspiration for breaking through the constraint and...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Publishing Group
2022-07-01
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| Series: | Microsystems & Nanoengineering |
| Online Access: | https://doi.org/10.1038/s41378-022-00388-w |
| _version_ | 1828260095724617728 |
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| author | Li Zhang Haiyang Zhan Xinyuan Liu Fei Xing Zheng You |
| author_facet | Li Zhang Haiyang Zhan Xinyuan Liu Fei Xing Zheng You |
| author_sort | Li Zhang |
| collection | DOAJ |
| description | Abstract Optical measurement systems suffer from a fundamental tradeoff between the field of view (FOV), the resolution and the update rate. A compound eye has the advantages of a wide FOV, high update rate and high sensitivity to motion, providing inspiration for breaking through the constraint and realizing high-performance optical systems. However, most existing studies on artificial compound eyes are limited by complex structure and low resolution, and they focus on imaging instead of precise measurement. Here, a high-performance lensless compound eye microsystem is developed to realize target motion perception through precise and fast orientation measurement. The microsystem splices multiple sub-FOVs formed by long-focal subeyes, images targets distributed in a panoramic range into a single multiplexing image sensor, and codes the subeye aperture array for distinguishing the targets from different sub-FOVs. A wide-field and high resolution are simultaneously realized in a simple and easy-to-manufacture microelectromechanical system (MEMS) aperture array. Moreover, based on the electronic rolling shutter technique of the image sensor, a hyperframe update rate is achieved by the precise measurement of multiple time-shifted spots of one target. The microsystem achieves an orientation measurement accuracy of 0.0023° (3σ) in the x direction and 0.0028° (3σ) in the y direction in a cone FOV of 120° with an update rate ~20 times higher than the frame rate. This study provides a promising approach for achieving optical measurements with comprehensive high performance and may have great significance in various applications, such as vision-controlled directional navigation and high-dynamic target tracking, formation and obstacle avoidance of unmanned aerial vehicles. |
| first_indexed | 2024-04-13T03:18:20Z |
| format | Article |
| id | doaj.art-4265a026a4f74a248cdcf84c1fd46b31 |
| institution | Directory Open Access Journal |
| issn | 2055-7434 |
| language | English |
| last_indexed | 2024-04-13T03:18:20Z |
| publishDate | 2022-07-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Microsystems & Nanoengineering |
| spelling | doaj.art-4265a026a4f74a248cdcf84c1fd46b312022-12-22T03:04:50ZengNature Publishing GroupMicrosystems & Nanoengineering2055-74342022-07-01811910.1038/s41378-022-00388-wA wide-field and high-resolution lensless compound eye microsystem for real-time target motion perceptionLi Zhang0Haiyang Zhan1Xinyuan Liu2Fei Xing3Zheng You4Department of Precision Instrument, Tsinghua UniversityDepartment of Precision Instrument, Tsinghua UniversityDepartment of Precision Instrument, Tsinghua UniversityDepartment of Precision Instrument, Tsinghua UniversityDepartment of Precision Instrument, Tsinghua UniversityAbstract Optical measurement systems suffer from a fundamental tradeoff between the field of view (FOV), the resolution and the update rate. A compound eye has the advantages of a wide FOV, high update rate and high sensitivity to motion, providing inspiration for breaking through the constraint and realizing high-performance optical systems. However, most existing studies on artificial compound eyes are limited by complex structure and low resolution, and they focus on imaging instead of precise measurement. Here, a high-performance lensless compound eye microsystem is developed to realize target motion perception through precise and fast orientation measurement. The microsystem splices multiple sub-FOVs formed by long-focal subeyes, images targets distributed in a panoramic range into a single multiplexing image sensor, and codes the subeye aperture array for distinguishing the targets from different sub-FOVs. A wide-field and high resolution are simultaneously realized in a simple and easy-to-manufacture microelectromechanical system (MEMS) aperture array. Moreover, based on the electronic rolling shutter technique of the image sensor, a hyperframe update rate is achieved by the precise measurement of multiple time-shifted spots of one target. The microsystem achieves an orientation measurement accuracy of 0.0023° (3σ) in the x direction and 0.0028° (3σ) in the y direction in a cone FOV of 120° with an update rate ~20 times higher than the frame rate. This study provides a promising approach for achieving optical measurements with comprehensive high performance and may have great significance in various applications, such as vision-controlled directional navigation and high-dynamic target tracking, formation and obstacle avoidance of unmanned aerial vehicles.https://doi.org/10.1038/s41378-022-00388-w |
| spellingShingle | Li Zhang Haiyang Zhan Xinyuan Liu Fei Xing Zheng You A wide-field and high-resolution lensless compound eye microsystem for real-time target motion perception Microsystems & Nanoengineering |
| title | A wide-field and high-resolution lensless compound eye microsystem for real-time target motion perception |
| title_full | A wide-field and high-resolution lensless compound eye microsystem for real-time target motion perception |
| title_fullStr | A wide-field and high-resolution lensless compound eye microsystem for real-time target motion perception |
| title_full_unstemmed | A wide-field and high-resolution lensless compound eye microsystem for real-time target motion perception |
| title_short | A wide-field and high-resolution lensless compound eye microsystem for real-time target motion perception |
| title_sort | wide field and high resolution lensless compound eye microsystem for real time target motion perception |
| url | https://doi.org/10.1038/s41378-022-00388-w |
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