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Phase pupil functions for reduction of defocus and spherical aberrations

机译:相位光瞳功能可减少散焦和球差

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Radially symmetric pupil plane phase retardation functions are derived that extend focal depth and alleviate third-order spherical aberration (SA) effects. The radial symmetry of these functions means that they can be more conveniently manufactured by use of traditional techniques such as diamond machining than previously reported filters with rectangular symmetry. The method employs minimization of the variation of Strehl ratio with defocus, W-20, and SA, W-40. The performance of the derived phase filters is illustrated by comparison with standard optical systems and with previously reported phase filters. (C) 2003 Optical Society of America. [References: 16]
机译:导出了径向对称的光瞳平面相位延迟函数,该函数可扩展焦深并减轻三阶球差(SA)效应。这些功能的径向对称性意味着,与以前报道的具有矩形对称性的过滤器相比,这些功能可以通过使用传统技术(例如金刚石加工)更方便地制造。该方法采用了散焦W-20和SA W-40时Strehl比变化的最小化。通过与标准光学系统以及以前报告的相位滤波器进行比较,可以说明派生相位滤波器的性能。 (C)2003年美国眼镜学会。 [参考:16]

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