基于李萨如扫描的微型激光投影显示技术  

Miniature Laser Projection Display Technique Based on Lissajous Scanning

作　　者：李晓莹[1] 梁晓伟[1] 乔大勇[1] 刘耀波[1] 潘春辉[1] 练彬[2] 

机构地区：[1]西北工业大学空天微纳系统教育部重点实验室,陕西西安710072 [2]西北工业大学深圳研究院,广东深圳518057

出　　处：《光学学报》2014年第6期130-135,共6页Acta Optica Sinica

基　　金：国家自然科学基金(50805123);教育部新世纪优秀人才支持计划(NCET-10-0075);深圳市财政委员会2012年第四批市新一代信息技术产业发展专项资金基础研究计划项目(JCYJ20120614154203639)

摘　　要：结合李萨如图像扫描和微机电系统(MEMS)二维谐振式扫描镜,提出一种新颖的投影显示方法。相比于传统的投影显示技术,该技术具有控制简单、能耗低、体积小及重量轻等优点。首先阐述了该投影显示技术中像素的定义与划分,然后从理论上分析了刷新率、分辨率和谐振频率之间的关系,以及选择谐振频率的约束条件,最后通过Matlab软件进行仿真验证,并使用研制出的扫描镜样件搭建了投影显示样机,成功投影出分辨率为260×180的图像,从而验证谐振频率选择约束的有效性以及该投影显示方法的可行性,为实际工程应用奠定基础。A new projection display technique is put forward combining Lissajous image-scanning with micro electro mechanical system （MEMS） two-dimensional resonant scanning mirror. Comparing with traditional projection display technique, the advantages of it are simple control system, low power consumption, small volume, light weight and so on. Firstly, the definition and division of the pixel are described. Then analyses of the relationship among refresh rate, resolution and resonant frequencies, and the constraints of selecting the resonant frequencies are conducted. Finally, the simulation on Matlab is conducted and the projection display prototype is built, using the scanning mirror sample pieces developed. The success of projecting an image with the resolution of 260× 180 testifies the feasibility of this technique of projection and the effectiveness of the constraints of selecting the resonant frequencies, laying the foundation of the practical engineering application of this projecting technique.

关 键 词：成像系统 微机电系统 李萨如 刷新率 分辨率 谐振频率 

分 类 号：TH744[机械工程—光学工程]