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Design of a dynamic refocus system based on the Seidel aberration theory

Design of a dynamic refocus system based on the Seidel aberration theory
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摘要 This Letter presents an optical design method based on the Seidel aberration theory for dynamic refocus systems. The function of a dynamic refocus system is to increase the amount of return photons when a pulsed laser travels over an extended height range. In this study, the dynamic refocus system is a short focal image system. The aberrations of the dynamic refocus system are calculated individually. Aplanatic lenses are used to eliminate the main spherical aberration. A field lens is used to change the stop position in order to eliminate comas and astigmatism. The effectiveness of the initial design results are confirmed, and the designed dynamic refocus objective with an aperture of F-number 0.98 and a focal length of 14.325 mm is achieved. The total motion of the dynamic refocus mirror is approximately 216 pm at heights that ranged from 8 to 18 kin. The optimum result shows that the dynamic refocus system is an ideal optical image system at each conjugating height with 10 km sample thicknesses. This Letter presents an optical design method based on the Seidel aberration theory for dynamic refocus systems. The function of a dynamic refocus system is to increase the amount of return photons when a pulsed laser travels over an extended height range. In this study, the dynamic refocus system is a short focal image system. The aberrations of the dynamic refocus system are calculated individually. Aplanatic lenses are used to eliminate the main spherical aberration. A field lens is used to change the stop position in order to eliminate comas and astigmatism. The effectiveness of the initial design results are confirmed, and the designed dynamic refocus objective with an aperture of F-number 0.98 and a focal length of 14.325 mm is achieved. The total motion of the dynamic refocus mirror is approximately 216 pm at heights that ranged from 8 to 18 kin. The optimum result shows that the dynamic refocus system is an ideal optical image system at each conjugating height with 10 km sample thicknesses.
作者 邵丽娜 曹召良 穆全全 胡立发 王玉坤 王少鑫 宣丽
机构地区 State Key Laboratory of Applied Optics University of Chinese Academy of Sciences
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2016年第4期64-68,共5页 中国光学快报（英文版）
基金 supported by the National Natural Science Foundation of China under Grant Nos.11174274 and 11174279
关键词 Geometrical optics Optical design Geometrical optics Optical design
分类号 O439 [机械工程—光学工程]
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参考文献15

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Chinese Optics Letters
2016年 第4期

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