液晶与显示Issue(5)：864-871,8.DOI:10.3788/YJYXS20153005.0864
同轴超短焦距折反式投影系统设计
Design of coaxial short focal length catadioptric projection system
摘要
Abstract
A new type of coaxial ultra short focal projector was designed in order to reduce the align-ment difficulty,reduce the difficulty of system design and shorten the total length.Firstly,by analy-zing the relationship between the system’s total length and the aberration,the necessity of ensuring a long system’s total length is proved.Then,through hollowing the central portion of an aspherical mirror and using a plane or spherical mirror to deflecting the optical path,a new design method for ul-tra short focal length projector is presented.It solves the blocking problem existing in the coaxial cat-adioptric optical system and improves the space utilization rate by ensuring a long total optical length and shortening the overall machinery length.Finally,the system’s screen size is 100 in and the total length of 215 mm.The focal length is 1.66 mm and the object NA is 0.2 with 0.17 throw ratio.The MTFs of every field are over 0.5 at the Nyquist Frequency.All of the indexes meet the demand of the projective system.Meanwhile,in the case of the same number of lenses,the system’s performance is better than the conventional projector.关键词
光学设计/投影系统/折反射系统/超短焦距Key words
optical design/projection system/catadioptric system/ultra short focal分类
信息技术与安全科学引用本文复制引用
杨建明,刘伟奇,孟祥翔,冯睿,孟中,张大亮..同轴超短焦距折反式投影系统设计[J].液晶与显示,2015,(5):864-871,8.基金项目
国防基础科研计划(No．B1720132001) （No．B1720132001）
