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波前编码成像技术是一种光学编码和数字解码相结合进行景深延拓非常有效的技术。为了深入研究波前编码成像系统的成像性能,在介绍了波前编码成像原理的基础上,通过对比分析方形光瞳和圆形光瞳在编码前后分别对应不同离焦情况下的点扩散函数PSF和相应光学系统的模拟成像,得出:在传统光学系统中,圆形光瞳的离焦抑制能力优于方形光瞳;而在波前编码光学系统中,方形光瞳的离焦抑制能力明显优于圆形光瞳。这一结果对光学系统设计工作者具有非常重要的参考价值。
Wavefront coding imaging is a very effective technique for combining depth-of-field extension with optical and digital decoding. In order to further study the imaging performance of the wavefront coding imaging system, based on introducing the wavefront coding imaging principle, by comparing the PSF of square pupil and circular pupil before and after encoding corresponding to different defocus conditions, And the corresponding optical system simulation imaging, draw: In the traditional optical system, the circular pupil defocus suppression ability is better than the square pupil; and in the wavefront coding optics, the square pupil defocusing suppression ability Better than circular pupil. This result has very important reference value to optical system design worker.