摘要
为了满足大孔径大视场变焦投影镜头的市场需求,基于Zemax光学软件设计一款连续变焦的投影镜头,变焦范围为16.27mm^22.77mm,视场角为63.7°~47.8°,F数为1.75~1.95,配合1.55cm(0.61英寸)LCOS投影显示芯片使用,在工作距离2 000mm处可投射出190.5cm(75英寸)画面,光学系统总长小于160mm,由10片透镜组成,其中包括8片玻璃透镜和2片塑料透镜。设计结果表明:镜头在空间极限频率71lp/mm处,各个焦段的MTF值均大于0.5,场曲都在0.1mm之内,畸变小于3%,成像质量良好。最后对光学系统进行了公差分析,得出一组较宽松的公差。
To meet the market demand of large aperture and wide field zoom projection lens,we designed a zoom lens based on ZEMAX optical software.The zoom range is 16.27 mm ~22.77 mm,its field of view（FOV）is 63.7°~47.8°,the F number is 1.75-1.95.Working with a 1.55 cm（0.61 inch）LCOS projection display chip,a 190.5 cm（75 inch）picture can be projected at a distance of 2000 mm.The total length of optical system is less than 160 mm,it is composed of 10 lenses,which include 8 glass lenses and 2 plastic lenses.Design results show that at the space frequency limit 71 lp/mm,the full FOV MTF is greater than 0.5 and the field curvature of each zoom section is within 0.1 mm,the distortion is within 3%,and the imaging quality is good.Finally,we conducted the tolerance analysis of the optical system,and obtained a set of loose machining tolerances.
作者
黄耀林
王敏
林正
Huang Yaolin;Wang Min;Lin Zheng(Key Laboratory of Optoeleetronic Science and Technology for Medicine Ministry of Education, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007,Chin)
出处
《应用光学》
CAS
CSCD
北大核心
2018年第3期412-417,共6页
Journal of Applied Optics
基金
国家自然科学基金(61520106015)
福建省科技厅产学研重大项目(闽财指[2014]973号)
关键词
光学设计
投影变焦镜头
大孔径
大视场
optical design
projection zoom lens
large aperture
wild view
