Laminated imaging axial distance error rapid correction method based on dichotomy

The invention discloses a lamination imaging axial distance error rapid correction method based on a dichotomy, and the method comprises the steps: a preparation stage: determining the search range of an axial distance, setting an initial distance, substituting a diffraction pattern and the initial distance into a lamination imaging algorithm for iteration, and obtaining a reconstructed object function Oi (x, y, Lm) when the iteration meets a first termination condition; in the axial distance error correction stage, the definition deviation value delta of the object function Oi (x, y, Lm) is calculated, the correction direction is determined according to the definition deviation value delta, the search range is narrowed in the correction direction, the intermediate value of the new search range is substituted into the laminated imaging algorithm, the new object function is reconstructed, and the calculation is repeated in sequence to obtain the axial distance error. Outputting the optimal axial distance until