An Off-Axis Measuring Method of Structural Parameters for Lenslet Array
Aiming at the problem that the vertex detection method is difficult to deal with the high-efficiency detection of the large-scale spherical lenslet array, a contact off-axis measuring method is proposed and the measurement accuracy and detection efficiency are verified by experiments. Firstly, by an...
| Main Authors: | , , , , , |
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| Format: | Article |
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MDPI AG
2022-05-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/11/11/1716 |
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| author | Jianjun Zhang Jianying Li Xinmin Guo Jianlong Zhang Yong Zhang Zhen Yang |
| author_facet | Jianjun Zhang Jianying Li Xinmin Guo Jianlong Zhang Yong Zhang Zhen Yang |
| author_sort | Jianjun Zhang |
| collection | DOAJ |
| description | Aiming at the problem that the vertex detection method is difficult to deal with the high-efficiency detection of the large-scale spherical lenslet array, a contact off-axis measuring method is proposed and the measurement accuracy and detection efficiency are verified by experiments. Firstly, by analyzing the 3D model of the relationship between a spherical lens and probe of profilometer, the mathematical model of probe trajectory arc is established based on the off-axis trajectory characteristics of the spherical lenslet array. Then, the error mechanism under the off-axis condition is analyzed, and a mathematical algorithm is proposed to restore the structural parameters at the main optical axis of the lens by using the process design value of the unit lens aperture. Finally, a comparative experiment is carried out between the off-axis detection method and vertex detection method. The experimental results demonstrate that: Compared with the coaxial detection method, the relative errors of the measured lens curvature radius <i>R</i><sub>0</sub> and the lens vector height <i>f</i><sub>0</sub> under the off-axis detection method are 1.71% and 1.95%, respectively. Under the sampling measurement scale, the detection efficiency of the off-axis detection method is 41 times higher than that of vertex detection method. |
| first_indexed | 2024-03-10T01:23:40Z |
| format | Article |
| id | doaj.art-38d1aa10436f494a837121f09080eca5 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T01:23:40Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-38d1aa10436f494a837121f09080eca52023-11-23T13:54:45ZengMDPI AGElectronics2079-92922022-05-011111171610.3390/electronics11111716An Off-Axis Measuring Method of Structural Parameters for Lenslet ArrayJianjun Zhang0Jianying Li1Xinmin Guo2Jianlong Zhang3Yong Zhang4Zhen Yang5School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, ChinaSchool of Astronautics, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Astronautics, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Astronautics, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Astronautics, Harbin Institute of Technology, Harbin 150001, ChinaAiming at the problem that the vertex detection method is difficult to deal with the high-efficiency detection of the large-scale spherical lenslet array, a contact off-axis measuring method is proposed and the measurement accuracy and detection efficiency are verified by experiments. Firstly, by analyzing the 3D model of the relationship between a spherical lens and probe of profilometer, the mathematical model of probe trajectory arc is established based on the off-axis trajectory characteristics of the spherical lenslet array. Then, the error mechanism under the off-axis condition is analyzed, and a mathematical algorithm is proposed to restore the structural parameters at the main optical axis of the lens by using the process design value of the unit lens aperture. Finally, a comparative experiment is carried out between the off-axis detection method and vertex detection method. The experimental results demonstrate that: Compared with the coaxial detection method, the relative errors of the measured lens curvature radius <i>R</i><sub>0</sub> and the lens vector height <i>f</i><sub>0</sub> under the off-axis detection method are 1.71% and 1.95%, respectively. Under the sampling measurement scale, the detection efficiency of the off-axis detection method is 41 times higher than that of vertex detection method.https://www.mdpi.com/2079-9292/11/11/1716compoundeye lenslet arraycontact measurementoff-axis trajectoryerror analysisefficiency |
| spellingShingle | Jianjun Zhang Jianying Li Xinmin Guo Jianlong Zhang Yong Zhang Zhen Yang An Off-Axis Measuring Method of Structural Parameters for Lenslet Array Electronics compound eye lenslet array contact measurement off-axis trajectory error analysis efficiency |
| title | An Off-Axis Measuring Method of Structural Parameters for Lenslet Array |
| title_full | An Off-Axis Measuring Method of Structural Parameters for Lenslet Array |
| title_fullStr | An Off-Axis Measuring Method of Structural Parameters for Lenslet Array |
| title_full_unstemmed | An Off-Axis Measuring Method of Structural Parameters for Lenslet Array |
| title_short | An Off-Axis Measuring Method of Structural Parameters for Lenslet Array |
| title_sort | off axis measuring method of structural parameters for lenslet array |
| topic | compound eye lenslet array contact measurement off-axis trajectory error analysis efficiency |
| url | https://www.mdpi.com/2079-9292/11/11/1716 |
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