11 May 1993 Focal shift and astigmatism for a circular zone plate
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Proceedings Volume 1979, 1992 International Conference on Lasers and Optoelectronics; (1993) https://doi.org/10.1117/12.144158
Event: 1992 International Conference on Lasers and Optoelectronics, 1992, Bejing, China
Abstract
Focal shift of the zone plate is completely different from the corresponding circular and annular apertures. Focal powers of the zone plate are constant under some conditions but for the latter they are always variables. Astigmatism for a zone plate is also investigated. The sagittal focal surfaces are unchanged but the tangential focal surfaces are changed as a function: cos2(Theta) , besides, it has neither spherical aberration nor coma. They are also completely different from conventional imaging devices.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shaomin Wang, Shaomin Wang, Xiaoqing Jiang, Xiaoqing Jiang, Qiang Lin, Qiang Lin, Eusebio Bernabeu, Eusebio Bernabeu, Javier Alda, Javier Alda, Victoria Martin, Victoria Martin, } "Focal shift and astigmatism for a circular zone plate", Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); doi: 10.1117/12.144158; https://doi.org/10.1117/12.144158
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