相位板装配倾斜对波前编码系统点扩散函数的影响

方超

Volume 4 Issue 6

Dec. 2011

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Chinese Optics > 2011 > 4(6): 617-621.

FANG Chao. Effect of tilting phase mask on point spread function in wavefront coding system[J]. Chinese Optics, 2011, 4(6): 617-621.

Citation:

FANG Chao. Effect of tilting phase mask on point spread function in wavefront coding system[J]. Chinese Optics, 2011, 4(6): 617-621.

FANG Chao. Effect of tilting phase mask on point spread function in wavefront coding system[J]. Chinese Optics, 2011, 4(6): 617-621.

Citation:

FANG Chao. Effect of tilting phase mask on point spread function in wavefront coding system[J]. Chinese Optics, 2011, 4(6): 617-621.

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Effect of tilting phase mask on point spread function in wavefront coding system

FANG Chao

State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

Received Date: 12 Sep 2011
Rev Recd Date: 23 Nov 2011
Publish Date: 25 Dec 2011

Abstract

Abstract

Effects of the tilt of a phase mask on wavefront coding systems are analyzed and the generalized pupil function is derived by a coordinate transformation in this paper. The approximate expression shows that the tilt of the phase mask brings a magnification effect on the cubic phase mask coefficient. The effect is independent on the sign of the angle, however, it will get larger with the absolute value of the angle increases. Moreover, the tilt of the phase mask extends both the sides of the Point Spread Function(PSF) envelope and causes a decrease of Modulation Transfer Function(MTF). When the tilt is in the meridian, the magnification effect of cubic phase mask coefficient in the meridian plane is larger than that in sagittal direction, which results in larger extension of PSF and lower MTF in the sagittal direction. All above conclusions are proved by the simulation with MATLAB and optical software.
- wavefront coding,
- cubic phase mask,
- tilt,
- Point Spread Function(PSF),
- Modulation Transfer Function(MTF)

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References(1)

References

[1] DOWSKI E R,KENNETH J R,KUBALA S. Modeling of wavefront coded imaging systems[J]. SPIE,2002,4736:116-126. [2] NARAYAMY R,BARON A E,CHUMACHENKO V,et al.. Application of wavefront coded imaging[J]. SPIE,2004,5299:1-12. [3] DOWSKI E R,JOHNSON G E. Wavefront coding:a modern method of achieving high performance and/or low cast imaging systems[J]. SPIE,1999,3779:137-145. [4] 蔡怀宇,方超,范立强,等. 混凝土结构裂缝宽度波前编码测量系统的设计[J]. 光学精密工程 ,2009,17(11):2750-2756. CAI H Y,FANG CH,FAN L Q,et al.. Image restoration of wavefront coding system with a cubic phase mask[J]. Opt. Precision Eng.,2009,17(11):2750-2756.(in Chinese) [5] 蔡怀宇,方超,范立强,等. 基于立方型相位板调制的波前编码图像恢复[J]. 光电子激光 ,2010,21(6):930-934. CAI H Y,FANG CH,FAN L Q,et al.. Design of wavefront coding system for measuring crack width in concrete structure[J]. J Optoelectronics Laser,2010,21(6):930-934.(in Chinese) [6] DOWSKI E R,CATHEY W T. Extended depth of field through wavefront coding[J]. Appl. Opt.,1995,34(11):1859-1866. [7] 苏显渝,李继陶.信息光学[M]. 北京:科学出版社,1998:133-170. SU X Y,LI J T. Information Optics[M]. Beijing:Science Press,1998:133-170.(in Chinese)

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