Influence of the observed-scene structure and noise on the precision of correlating Hartmann-Shack wavefront sensing is systematically analyzed,where the scene structure is described with spatial spectrum,and the signal-noise-ratio(SNR) is described with the ratio of the root-mean-square(RMS) of image grey variance to the root-mean-square of noise.

Discreteness between image elements make the continuous gray image discrete when using CCD as the detecting device of Hartmann-Shack wavefront sensor,which will influence the accuracy of wavefront sensing.

MTF of a vision system can be measured through measuring wavefront aberrations of a vision system with Hartmann-Shack wavefront sensor and self-correlation of wavefront aberrations with pupil function.

A method for wavefront stitching detection,in which small-aperture Hartmann-Shack wavefront sensor is used to test large-aperture optical system or component,is proposed.

A software-based method called extrapolation method was presented to overcome the trade-off between the sensitivity and the dynamic range of displacement of Shack-Hartmann Wave-front Sensor(HS).