A complete phase reconstruction method based on a Shack-Hartmann wavefront sensor
By determining the position and direction of the phase singularity using the second moment of light intensity and phase gradient information, and reconstructing the hidden phase using complex logarithmic operations, the problem of vortex phase reconstruction in the measurement of wavefronts containing phase singularities by Shaker-Hartmann wavefront sensors is solved, and accurate reconstruction of the complete wavefront phase is achieved.
CN120427121BActive Publication Date: 2026-07-03BEIJING INST OF COMP TECH & APPL
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF COMP TECH & APPL
- Filing Date
- 2025-05-13
- Publication Date
- 2026-07-03
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Figure CN120427121B_ABST
Abstract
The present application relates to a kind of complete phase reconstruction methods based on Shack-Hartmann wavefront sensor, belong to laser communication, imaging and adaptive optics field.The present application obtains light intensity information and phase gradient information using Shack-Hartmann wavefront sensor;Phase singularity position is detected by calculating the ratio of second moment beam width and diffraction limit point diameter;Phase singularity rotation direction is judged using phase gradient loop summation;Complex plane is established with the center of detection surface as origin and the implicit phase is reconstructed by complex logarithm operation;Complete wavefront phase is obtained by combining the implicit phase with the continuous phase fitted by Zernike polynomial.The present application aims to solve the fundamental defect that existing Shack-Hartmann wavefront sensor cannot measure vortex phase when measuring wavefront containing phase singularity, and can realize the accurate reconstruction of complete wavefront phase information containing implicit phase.
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