Relaxing the alignment and fabrication tolerances of thin annular folded imaging systems using wavefront coding.
Relaxing the alignment and fabrication tolerances of thin annular folded imaging systems using wavefront coding.
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DOI：
10.1364/ao.46.006751
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发表时间：
2007-09
期刊：
影响因子：
1.9
通讯作者：
E. Tremblay;J. Rutkowski;Inga Tamayo;P. Silveira;R. Stack;R. Morrison;M. Neifeld;Yeshaiyahu Fainman;J. Ford
中科院分区：
文献类型：
--
作者：
E. Tremblay;J. Rutkowski;Inga Tamayo;P. Silveira;R. Stack;R. Morrison;M. Neifeld;Yeshaiyahu Fainman;J. Ford
环形折叠成像器可以比相应的全口径成像器薄10倍，但具有严格的制造公差和相对较浅的焦深。波前编码是一种利用特殊光学器件进行探测后信号处理的技术，已被用于提高全口径成像系统的焦深。在这里，我们探索了波前编码在环形折叠光学中的应用。我们比较了焦距为38 mm、总航迹仅为5 mm的成像系统的设计和实验结果。
Annular folded imagers can be up to 10x thinner than corresponding full-aperture imagers, but have tight fabrication tolerances and relatively shallow depth of focus. Wavefront coding, the use of specialized optics with postdetection signal processing, has been used to improve the depth of focus in full-aperture imaging systems. Here we explore the application of wavefront coding to annular folded optics. We compare the design and experimental results for an imaging system with a 38 mm focal length and just 5 mm total track.