基于Micro-LED阵列的短焦距投影光学系统设计研究
吉林东光集团有限公司, 吉林长春 130031
| 摘 要： | 便携式投影仪市场需求一直很高，因为它们具有轻便、易携带的特点，可以方便地在不同场合使用，例如商务演示、教育培训、家庭影院等。随着科技的不断进步，便携式投影仪的功能也越来越多样化，例如支持无线投屏、内置电池、高清投影等，这些功能也进一步增加了市场需求。设计了一种基于LED微型阵列的投影系统。该系统由一个显示单元和一个投影物镜组成。采用一个10mm×7.5mm自发光LED微型阵列作为显示单元，采用光学设计zemax对投影物镜进行设计。投影物镜具有反远距光学结构，全视场66°，焦距8.5mm；空间频率为85lp/mm时，物镜的调制传递函数MTF大于0.5，畸变小于1%。满足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、加工方便等优点，可为第三代投影技术的发展提供参考。 |
| 关 键 词： | 微距投影; MICRO-LED; 紧凑设计; 交互式投影系统 |
| DOI： | 10.57237/j.mse.2023.02.001 |
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收稿日期: 2023-05-22
接受日期: 2023-06-19
在线出版日期: 2023-06-29
Design of Micro-LED Array Short Focal Length Projection System
Jilin Dongguang Group Co., LTD., Changchun 130031, China
| Abstract: | The market demand for portable projectors has been high because they are portable and can be easily used on different occasions, such as business demonstrations, educational training, home theater, etc. With the continuous progress of technology, portable projectors have more and more diversified functions, such as supporting wireless screen projection, built-in battery, HD projection, etc., which also further increase the market demand. A projection system based on the LED microarray was designed. The system consists of a display unit and a projection objective lens. A 10mm×7.5mm self-emitting LED microarray was used as the display unit, and the projection objective was designed with an optical design zemax. The projection objective has antiremote optical structure with full field of 66 and focal length of 8.5mm; At the spatial frequency of 85 lp/mm, the modulation transfer function MTF is greater than 0.5 and the distortion is less than 1%. Meet the design requirements of the projection system. The projection system has the advantages of small size, simple structure, good projection effect and convenient processing, which can provide reference for the development of the third generation projection technology. |
| Keywords: | Micro Projection; Micro-LED; Compact Design; Interactive Projection Systems |
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