The invention discloses a splicing detection device of a circular Hartmann-Shack wave-front sensor based on a minor
caliber. The device is characterized by comprising the Hartmann-Shack wave-front sensor, an x-z 2D
electric control translation stage, a step
motor controller, a computer, a mirror surface to be detected and a
data acquisition card; the Hartmann-Shack wave-front sensor is positioned behind the mirror surface to be detected to detect the mirror surface to be detected, and a
facula lattice is formed on the Hartmann-Shack wave-front sensor, and the
data acquisition card acquires the
facula data and transmits the data to the computer for storing; the computer sends an instruction to the step
motor controller, and controls the 2D
electric control translation stage to move along an x axis and a z axis to scan and detect the mirror surface to be detected; the
data acquisition card sequentially acquires the
facula data of a
wavelet surface of each frame, and then a wave surface to be detected is obtained by a
centroid algorithm, a splicing method and a restoration
algorithm. The device and the method help improve a formula by ignoring a defocus error in theoretical analysis, eliminate a principle error of a
translation error, improve splicing precision and lower
computation complexity of solving splicing parameters.