一种成像式亮度计校正方法

来源 :应用光学 | 被引量 : 0次 | 上传用户：edison2920

【摘要】

：

采用图像传感器的成像式亮度计可通过短焦距成像物镜实现大视场和空间分辨的亮度测量,但仍存在图像传感器像素非线性响应,短焦物镜产生的强烈渐晕效应及图像边缘畸变等问题.因此提出了一种成像式亮度计校正方法,利用标准辐射源法进行线性校正与平场校正,以获得线性修正系数和平场校正矩阵,通过几何坐标标定法获得畸变校正矩阵.采用焦距为12 mm的物镜及200万pixel的图像传感器搭建了成像式亮度计,经校正后完成了液晶显示屏发光亮度测量,与商用分光辐射亮度计进行了对比测试,测量相对误差不超过±2％,实现了大视场高精度空间分

【作者】

：

李兵胡皓程闵锐曹良才

【机构】

：

清华大学精密仪器系精密测试技术及仪器国家重点实验室,北京 100084

【出处】

：

应用光学

【发表日期】

：

2022年1期

【关键词】

：

光度学成像式亮度计线性校正平场校正畸变校正

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一种成像式亮度计校正方法

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