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LED微阵列投影系统设计

冯思悦 梁静秋 梁中翥 吕金光 陶金 王维彪 秦余欣 孟德佳

冯思悦, 梁静秋, 梁中翥, 吕金光, 陶金, 王维彪, 秦余欣, 孟德佳. LED微阵列投影系统设计[J]. 中国光学(中英文), 2019, 12(1): 88-96. doi: 10.3788/CO.20191201.0088
引用本文: 冯思悦, 梁静秋, 梁中翥, 吕金光, 陶金, 王维彪, 秦余欣, 孟德佳. LED微阵列投影系统设计[J]. 中国光学(中英文), 2019, 12(1): 88-96. doi: 10.3788/CO.20191201.0088
FENG Si-yue, LIANG Jing-qiu, LIANG Zhong-zhu, LV Jin-guang, TAO Jin, WANG Wei-biao, QIN Yu-xin, MENG De-jia. Design of projection system for a micro-LED array[J]. Chinese Optics, 2019, 12(1): 88-96. doi: 10.3788/CO.20191201.0088
Citation: FENG Si-yue, LIANG Jing-qiu, LIANG Zhong-zhu, LV Jin-guang, TAO Jin, WANG Wei-biao, QIN Yu-xin, MENG De-jia. Design of projection system for a micro-LED array[J]. Chinese Optics, 2019, 12(1): 88-96. doi: 10.3788/CO.20191201.0088

LED微阵列投影系统设计

doi: 10.3788/CO.20191201.0088
基金项目: 

国家自然科学基金 61274122

国家自然科学基金 61627819

吉林省科技发展计划 20160204007GX

吉林省科技发展计划 20180201024GX

广东省科技计划 2016B010111003

应用光学国家重点实验室开放基金,中国科学院青促会项目 2018254

详细信息
    作者简介:

    冯思悦(1991-), 女, 吉林省吉林市人, 硕士研究生。主要从事光学系统设计及微光机电系统方面的研究。E-mail:18744019144@163.com

    梁静秋(1962—),女,辽宁沈阳人,博士生导师。主要从事微小型光学系统、微光机电系统(MOEMS)及微结构光学方面的研究。E-mail:liangjq@ciomp.ac.cn

  • 中图分类号: TH744

Design of projection system for a micro-LED array

Funds: 

National Natural Science Foundation of China 61274122

National Natural Science Foundation of China 61627819

Jilin Province Science and Technology Development Plan 20160204007GX

Jilin Province Science and Technology Development Plan 20180201024GX

Guangdong Science and Technology Project 2016B010111003

Open Fund Project of SKLAO and Youth Innovation Promotion Association 2018254

More Information
  • 摘要: 为满足便携式投影仪的市场需求,设计了一种基于LED微型阵列的投影系统。该系统由显示单元和投影物镜构成。采用尺寸为12 mm×9 mm的自发光LED微型阵列作为系统的显示单元,利用光学设计软件设计了投影物镜。投影物镜采用反远距光学结构,全视场角为80°,焦距为8 mm,属于强光、广角镜头。在空间频率20 lp/mm处,该物镜的调制传递函数大于0.85,畸变小于2%,符合投影系统的设计要求。该投影系统具有体积小,结构简单,投影效果好,易加工等诸多优势,可为第三代投影技术的发展提供参考。

     

  • 图 1  系统整体结构示意图

    Figure 1.  Schematic of optical system overall structure

    图 2  投影系统示意图

    Figure 2.  Sketch map of projection system

    图 3  反远距结构示意图

    Figure 3.  Structure of retrofocus lens

    图 4  优化后投影物镜光路示意图

    Figure 4.  Structure of optical path for optimized projection objective

    图 5  20 lp/mm处MTF曲线图

    Figure 5.  MTF curves of imaging system at 20 lp/mm

    图 6  像差分析图

    Figure 6.  Aberration analysis diagram

    图 7  能量及照度分析图

    Figure 7.  Analysis diagrams for energy and illumination

    图 8  光线追迹图及像面照度分析

    Figure 8.  Ray-tracing diagram and image illuminance map

    表  1  Micro-LED阵列参数表

    Table  1.   Parameters of micro-LED display

    Arrays type Panel size/mm Length-width ratio Pixel size/μm Pixel amount
    Red micro-LEDs 12×9 4:3 25×25 480×360
    Green micro-LEDs 12×9 4:3 25×25 480×360
    Blue micro-LEDs 12×9 4:3 25×25 480×360
    Total pixels (480×360)×3
    下载: 导出CSV

    表  2  投影物镜相关参数及设计指标

    Table  2.   Optical technology parameters and design specifications

    Parameters Specifications
    Chip size (diagonal)/mm 15
    Focus length/mm 8
    FOV/(°) 80
    Wavelength/nm 400~700
    F/# 2.5
    Prism thickness/mm 20
    Prism material LAF13
    MTF MTF≥0.5@20 lp/mm
    Distortion ≤3%
    下载: 导出CSV

    表  3  光学系统公差范围

    Table  3.   Tolerance range in this optical system

    Parameter Value
    Radius (fringes) N=2
    Thickness/mm 0.02
    Decenter X/Y/mm 0.02
    Tilt X/Y(degrees) 0.008 3
    S+A Irregularity (fringes) ΔN=0.2
    Index of refractive 0.000 1
    Abbe number/% 1
    下载: 导出CSV

    表  4  20 lp/mm处光学系统的MTF

    Table  4.   MTF at 20 lp/mm in this optical system

    Parameter Value
    Nominal 0.901
    Best 0.899
    Worst 0.762
    Mean 0.866
    Standard deviation 0.029
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-10-17
  • 修回日期:  2017-11-01
  • 刊出日期:  2019-02-01

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