基于片上质心计算的高速哈特曼波前传感器技术  

High-speed Hartmann wavefront sensor technology based on chip centroid calculation

作　　者：杨蕊瑜 王帅[2] 张彬[1] 孙年春[1] YANG Ruiyu;WANG Shuai;ZHANG Bin;SUN Nianchun(School of Electronic Information,Sichuan University,Chengdu 610065,China;Key Laboratory of Adaptive Optics,Chinese Academy of Sciences,Chengdu 610209,China)

机构地区：[1]四川大学电子信息学院,四川成都610065 [2]中国科学院自适应光学重点实验室,四川成都610209

出　　处：《中国测试》2021年第12期142-148,共7页China Measurement & Test

基　　金：国家自然科学基金(61805251,61875203,11704382);中国科学院青年创新促进会(2017429)。

摘　　要：针对强湍流像差校正、气动流场像差测量等高速波前探测场景,提出一种基于片上质心计算的高速哈特曼波前传感器设计,将光斑图像数据在输出之前做预处理,将预处理获取的光斑质心而非光斑图像作为光电探测器高速实时输出的数据,从而大幅压缩高速波前探测所需的实时传输数据量,可显著提升哈特曼波前传感器的实时探测速度。测试结果表明,提出的设计方案基于常规GigE Vision接口即可实现10 kHz以上的高速波前实时测量,有望为哈特曼波前传感器的自适应光学校正、气动光学效应测量等应用场景提供一种实时、高速波前测量新的技术手段。Aiming at high-speed wavefront detection scenarios such as strong turbulence aberration correction and aerodynamic flow field aberration measurement,a high-speed Hartmann wavefront sensor design based on on-chip centroid calculation is proposed.The spot image data is preprocessed before output.And the preprocessed spot centroids instead of the spot image is used as high-speed real-time output data of the photodetector of wavefront sensor.This design can greatly reduce the amount of real-time transmission data required for high-speed wavefront detection and significantly improve the real-time detection speed of Hartmann wavefront sensor.The test results show that the proposed scheme can achieve high-speed,highresolution real-time wavefront measurement above 10 kHz based on the conventional GigE Vision interface and is expected to provide a new technique for Hartmann wavefront sensor to realize real-time and high-speed wavefront measurement in application scenarios,such as adaptive optical and measurement of aero-optical effects.

关 键 词：自适应光学 片上质心计算 高速波前探测 哈特曼波前传感器 

分 类 号：O438.2[机械工程—光学工程] TB9[理学—光学]