| Optimization of the edge extension in dwell time algorithm for ion beam figuring | |
| Shu, Liangxuan1,2; Wu, Fan1; Shi, Chunyan1; Shu, L. | |
| Volume | 8416 |
| Pages | 84162M |
| 2012 | |
| Language | 英语 |
| ISSN | 0277786X |
| DOI | 10.1117/12.974277 |
| Indexed By | Ei |
| Subtype | 会议论文 |
| Abstract | Ion beam figuring is capacity of removing materials at atoms, and the optical quality after polishing depends on not only the accuracy of processing but also the accuracy of dwell time algorithm. Deconvolution is a common method of determining the dwell time and it is generally carried out by matrix operations in the computer, so the surface figure of the optical component needs to be extended to cover throughout the matrix. First, this paper analyses the disadvantages of the extension by zero setting and Gaussian extension. And then based on the principle of matrix convolution an optimization method for the edge extension is proposed, which predicts the desired surface figure by the convolution of points in the workpiece. Finally, the simulations for ion beam figuring with Gauss extension and the optimization method proposed are made, and the results show that the optimization method taken into account the action of inner points has the better effect: the edge effect is suppressed more effectively and the algorithm achieves higher accuracy. © 2012 SPIE.; Ion beam figuring is capacity of removing materials at atoms, and the optical quality after polishing depends on not only the accuracy of processing but also the accuracy of dwell time algorithm. Deconvolution is a common method of determining the dwell time and it is generally carried out by matrix operations in the computer, so the surface figure of the optical component needs to be extended to cover throughout the matrix. First, this paper analyses the disadvantages of the extension by zero setting and Gaussian extension. And then based on the principle of matrix convolution an optimization method for the edge extension is proposed, which predicts the desired surface figure by the convolution of points in the workpiece. Finally, the simulations for ion beam figuring with Gauss extension and the optimization method proposed are made, and the results show that the optimization method taken into account the action of inner points has the better effect: the edge effect is suppressed more effectively and the algorithm achieves higher accuracy. © 2012 SPIE. |
| Conference Name | Proceedings of SPIE: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies |
| Conference Date | 2012 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://ir.ioe.ac.cn/handle/181551/7580 |
| Collection | 先光中心 |
| Corresponding Author | Shu, L. |
| Affiliation | 1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China 2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China |
| Recommended Citation GB/T 7714 | Shu, Liangxuan,Wu, Fan,Shi, Chunyan,et al. Optimization of the edge extension in dwell time algorithm for ion beam figuring[C],2012:84162M. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2012-2077.pdf（552KB） | 会议论文 | 开放获取 | CC BY-NC-SA | Application Full Text | ||
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