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ファイル | 記述 | サイズ | フォーマット | |
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OE.27.028692.pdf | 5.66 MB | Adobe PDF | 見る/開く |
タイトル: | Zernike mapping of optimum dwell time in deterministic fabrication of freeform optics |
著者: | Zhu, Wule Beaucamp, Anthony https://orcid.org/0000-0002-7377-7879 (unconfirmed) |
発行日: | 30-Sep-2019 |
出版者: | OSA - The Optical Society |
誌名: | Optics Express |
巻: | 27 |
号: | 20 |
開始ページ: | 28692 |
終了ページ: | 28706 |
抄録: | In optics fabrication technologies such as computer controlled optical surfacing (CCOS), accurate computation of the dwell time map plays an essential role in the deterministic performance of the fabrication process. However, it is still difficult for existing methods to derive smooth dwell time maps that reduce dynamic stressing on the machine especially at the aperture edge region, while retaining fine correction capability on freeform optics. To answer these challenges, we propose a new method based on Zernike decomposition and improved differential evolution optimization of the dwell time map, which can be applied to time-dependent optics fabrication processes such as fluid jet machining. Simulations and experiments based on a bi-sinusoidal freeform design were carried out to assess the feasibility of the proposed methodology. With appropriate fluid jet pressure, a bi-sinusoidal optical surface with demanding form error target of sub-100 nm in peak-to-valley was achieved, showing a remarkable improvement on the state-of-the-art, while keeping a good average surface roughness of 2.6 nm Ra on the optical glass. |
著作権等: | © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement |
URI: | http://hdl.handle.net/2433/244289 |
DOI(出版社版): | 10.1364/OE.27.028692 |
PubMed ID: | 31684616 |
出現コレクション: | 学術雑誌掲載論文等 |
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