中国光学（中英文）2024，Vol.17Issue(1)：89-99,11.DOI:10.37188/CO.2023-0063
Micro LED车灯投影光学系统设计与优化
Design and optimization of Micro LED vehicle light projection optical system
摘要
Abstract
This article presents a vehicle headlight projection scheme based on Micro LED arrays.A 200×150 white Micro LED array with pixel size of 80 μm×80 μm is designed as the display light source,and a headlight projection optical system with a field of view of 16°×34°is designed.The object plane tilt angle and optical system structure are optimized.In addition,the inverse distortion processing method and pixel grayscale modulation method are used to solve the trapezoidal distortion and uniformity of illumination of the headlight projection image.A projection experimental platform is built to verify the image correction method.Experimental results show that after correction,the image trapezoidal distortion coefficients p1 and p2 decrease from 0.0932 and 0.3680 to 0.0835 and 0.0373,respectively,and the image plane illumination uniformity increases from 83.2%to 93.2%.This article achieves high light efficiency and low distortion of vehicle headlight projection by optimizing the design of the inclined projection headlight optical system based on Micro LEDs and using image correction methods.关键词
车灯投影光学系统/光学设计/Micro LED/照度均匀性/梯形畸变Key words
headlight projection optical system/optical design/Micro LED/illumination uniformity/trapezoidal distortion分类
信息技术与安全科学引用本文复制引用
李香兰,梁静秋,金霞,吕金光,郑凯丰,陈宇鹏,赵百轩,赵莹泽,秦余欣,王惟彪..Micro LED车灯投影光学系统设计与优化[J].中国光学（中英文）,2024,17(1):89-99,11.基金项目
国家重点研发计划(No.2022YFB3604702) （No.2022YFB3604702）
吉林省科技发展计划(No.20200401056GX)Supported by National Key Research and Development Program(No.2022YFB3604702) （No.20200401056GX）
Jilin Province Sci-ence and Technology Development Plan(No.20200401056GX) （No.20200401056GX）
