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.
出处
《光学学报》
EI
CAS
CSCD
北大核心
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)
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
imaging systems
micro-electro mechanical system
Lissajous
refresh rate
resolution
resonant frequency
