Adaptive beam collimation and quality optimization system and method based on spot gridding

An adaptive beam collimation and quality optimization system based on spot gridding, comprising a first optical reflector, a second optical reflector, an image collector, a computer, an X-axis piezoelectric ceramic module controller, a Y-axis piezoelectric ceramic module controller, a spot unit piezoelectric ceramic array module controller, an X-axis piezoelectric ceramic module, a Y-axis piezoelectric ceramic module, a spot unit piezoelectric ceramic array module, and a three-module optical mirror frame;

• wherein, the first optical reflector is installed at the front end of the three-module optical mirror frame, and an incident laser beam is reflected by the first optical reflector to reach the second optical reflector, and then the incident laser beam is output after being reflected by the second optical reflector again;
• the X-axis piezoelectric ceramic module, the Y-axis piezoelectric ceramic module and the spot unit piezoelectric ceramic array module are mounted at the rear end of the three-module optical mirror frame;
• the X-axis piezoelectric ceramic module controller, the Y-axis piezoelectric ceramic module controller and the spot unit piezoelectric ceramic array module controller are used for controlling the X-axis piezoelectric ceramic module, the Y-axis piezoelectric ceramic module and the spot unit piezoelectric ceramic array module respectively;
• the image collector is used to collect a spot image output from the second optical reflector and store it to the computer;
• the computer includes an image data processing system;
• the image data processing system is used to process the spot image captured by the image collector in real time, and to extract the real-time relative position the spot on the second optical reflector, rather than the relative position of the spot in the entire spot image;
• an offset of the spot is obtained by comparing the real-time relative position information with the calibration position, and the offset of the spot is fed back to the X-axis piezoelectric ceramic module controller and the Y-axis piezoelectric ceramic module controller, which are used to correct the offset of an output beam;
• an intensity information of a small unit spot is obtained after the extracted spot is gridded;
• calculating a weighted average intensity of the small unit spot adjacent to a distorted unit spot, and the difference between the distorted small unit spot intensity and the weighted average intensity is calculated, and the difference is fed back to the spot unit piezoelectric ceramic array module controller, which is used to correct the distortion of the output beam.