Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary Mirror
Large-aperture space optical systems are important tools for observing our planet and conducting deep-space scientific research. More requirements have been put forward for large-aperture optical systems as the depth and breadth of related applications continue to increase. However, achieving the de...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/7/768 |
| _version_ | 1797587711118278656 |
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| author | Cheng Huang Jinpeng Li Zhaohan Cai Jiadong Yu Yongjun Xie Xianglong Mao |
| author_facet | Cheng Huang Jinpeng Li Zhaohan Cai Jiadong Yu Yongjun Xie Xianglong Mao |
| author_sort | Cheng Huang |
| collection | DOAJ |
| description | Large-aperture space optical systems are important tools for observing our planet and conducting deep-space scientific research. More requirements have been put forward for large-aperture optical systems as the depth and breadth of related applications continue to increase. However, achieving the desired surface accuracy on lightweight materials for large-aperture mirror brings higher demands on relevant processing technologies, which increases the processing difficulty, cycle, and cost of large-aperture optical systems. Therefore, it is necessary to develop a new optical system technique with high tolerance for primary mirror machining errors to significantly reduce its machining accuracy requirements. This paper proposes a new optical system technique which introduces a small-aperture free-form surface into the large-aperture optical system’s post optical path. By combining the freeform correction and its misalignment on the system’s aberrations, the system’s wavefront can be adjusted to correct the wavefront distortion caused by the primary mirror’s machining errors. This reduced the machining accuracy requirements of the large-aperture primary mirror by about one order of magnitude, and high-quality imaging with a low-precision primary mirror is achieved. |
| first_indexed | 2024-03-11T00:43:43Z |
| format | Article |
| id | doaj.art-2e57b042a7a24df88afe385e13db1f50 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-11T00:43:43Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-2e57b042a7a24df88afe385e13db1f502023-11-18T20:57:53ZengMDPI AGPhotonics2304-67322023-07-0110776810.3390/photonics10070768Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary MirrorCheng Huang0Jinpeng Li1Zhaohan Cai2Jiadong Yu3Yongjun Xie4Xianglong Mao5Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, ChinaXi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, ChinaXi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, ChinaXi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, ChinaXi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, ChinaXi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, ChinaLarge-aperture space optical systems are important tools for observing our planet and conducting deep-space scientific research. More requirements have been put forward for large-aperture optical systems as the depth and breadth of related applications continue to increase. However, achieving the desired surface accuracy on lightweight materials for large-aperture mirror brings higher demands on relevant processing technologies, which increases the processing difficulty, cycle, and cost of large-aperture optical systems. Therefore, it is necessary to develop a new optical system technique with high tolerance for primary mirror machining errors to significantly reduce its machining accuracy requirements. This paper proposes a new optical system technique which introduces a small-aperture free-form surface into the large-aperture optical system’s post optical path. By combining the freeform correction and its misalignment on the system’s aberrations, the system’s wavefront can be adjusted to correct the wavefront distortion caused by the primary mirror’s machining errors. This reduced the machining accuracy requirements of the large-aperture primary mirror by about one order of magnitude, and high-quality imaging with a low-precision primary mirror is achieved.https://www.mdpi.com/2304-6732/10/7/768large-aperture optical systemlow-precision primary mirrorfreeform compensationpose compensationnodal aberration theory |
| spellingShingle | Cheng Huang Jinpeng Li Zhaohan Cai Jiadong Yu Yongjun Xie Xianglong Mao Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary Mirror Photonics large-aperture optical system low-precision primary mirror freeform compensation pose compensation nodal aberration theory |
| title | Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary Mirror |
| title_full | Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary Mirror |
| title_fullStr | Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary Mirror |
| title_full_unstemmed | Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary Mirror |
| title_short | Post Optical Freeform Compensation Technique for Machining Errors of Large-Aperture Primary Mirror |
| title_sort | post optical freeform compensation technique for machining errors of large aperture primary mirror |
| topic | large-aperture optical system low-precision primary mirror freeform compensation pose compensation nodal aberration theory |
| url | https://www.mdpi.com/2304-6732/10/7/768 |
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