Abstract
By applying the wavefront coding technique to an optical system, the depth of focus can be greatly increased. Several complicated methods, such as Fisher Information on based method, have already been taken to optimize for the best pupil phase mask in ideal condition. Here one simple point spread function (PSF) based method with only the standard deviation method used to evaluate the PSF stability over the depth of focus is taken to optimize for the best coefficients of pupil phase mask in practical optical systems. Results of imaging simulations for optical systems with and without pupil phase mask are presented, and the sharpness of image is calculated for comparison. The optimized results showed better and much more stable imaging quality over the original system without changing the position of the image plane.
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References
Abrahamsson, S., Usawa, S., Gustafsson, M., 2006. A new approach to extend focus for high-speed, high-resolution biological microscopy. Proc. SPIE, 6090:60900N-1–60900N-8. [doi:10.1117/12.647022]
Castro, A., Ojeda-Castañeda, J., 2005. Increased depth of field with phase only filters: ambiguity function. Proc. SPIE, 5827:1–11. [doi:10.1117/12.605282]
Cathey, W.T., Dowski, E.R., 2002. New paradigm for imaging systems. Appl. Opt., 41:6080–6092.
Chi, W.L., Nicholas, G., 2005. Smart camera with extended depth of field. Proc. SPIE, 6024:602424-1–602424-6. [doi:10.1117/12.666949]
Dowski, E.R., Cathey, W.T., 1995. Extending depth of field through wavefront coding. Appl. Opt., 34:1859–1866.
Gómez-Morales, F., Tudela, R., Ferré-Borrull, J., Bosch, S., de la Fuente, M., 2005. Pupil filters for wavefront coding: off axis performances. Proc. SPIE, 592637:592637-1–592637-7.
Ingber, L., 1996. Adaptive simulated annealing (ASA): Lessons learned. J. Control and Cybernetics, 25(1):33–54.
Mezouari, S., Harvey, A.R., 2002. Primary aberrations alleviated with phase pupil filters. Proc. SPIE, 4768:21–31. [doi:10.1117/12.482192]
Mezouari, S., Muyo, G., Harvey, A.R., 2004. Amplitude and phase filters for mitigation of defocus and third-order aberrations. Proc. SPIE, 5249:238–248. [doi:10.1117/12.516542]
Narayanswamy, R., Silveira, P.E.X., 2006. Iris recognition at a distance with expanded imaging volume. Proc. SPIE, 6202:62020G-1–62020G-12. [doi:10.1117/12.666883]
Prasad, S., Torgersen, T.C., Pauca, V.P., Plemmons, R.J., van der Gracht, J., 2002. Engineering the Pupil Phase to Improve Image Quality. Proc. 2002 AMOS Technical Conference, Maui, HI.
Sherif, S.S., Dowski, E.R., Cathey, W.T., 2001. A logarithmic phase filter to extend the depth of focus of incoherent hybrid imaging systems. Proc. SPIE, 4471:272–279. [doi:10.1117/12.449345]
Subbarao, M., Choi, T., 1993. Focusing techniques. J. Opt. Eng., 32(11):2834–2836.
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Zhang, Wz., Chen, Yp., Zhao, Ty. et al. Simple PSF based method for pupil phase mask’s optimization in wavefront coding system. J. Zhejiang Univ. - Sci. A 8, 180–185 (2007). https://doi.org/10.1631/jzus.2007.A0180
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DOI: https://doi.org/10.1631/jzus.2007.A0180