Fig. 1. ePIE-based transmitting wave-front measuring method. (a) Experimental setup; (b) flow chart of algorithm

Fig. 2. Numerical simulation results. (a) Original amplitude and phase values of scanning diffraction object; (b) phase of light field illuminated on lens; (c) real transmitting wave-front of lens to be measured; (d) diffraction patterns of detector without lens; (e) retrieved amplitude and phase of scanning object; (f) retrieved phase of light field illuminated on front surface of lens; (g) phase comparison along dotted lines in Figs. 2(b) and 2(f); (h) diffraction patterns of detector with lens; (i) r

Fig. 3. Experimental results. (a) Diffraction patterns without lens; (b) retrieved amplitude and phase of scanning object; (c) retrieved phase of light illuminating on lens; (d) diffraction patterns with lens; (e) phase of light leaving lens; (f) transmitting wave-front of lens; (g) error between measured value and ideal spherical wave-front; (h)/(l) diffraction patterns with two kinds of cylindrical lenses; (i)/(m) retrieved transmitting wave-fronts of cylindrical lenses; (j)/(n) measured transmitting

Fig. 4. Experimental results. (a) Restoration result of USAF 1951; (b) amplitude distributions corresponding to underlined positions in locally-magnified image of Fig. 4(a)