一款广角车载镜头的设计
A design of vehical wide-angle lens
14000字 25页
目录
第一章 引言 1
第二章 鱼眼镜头的成像原理 4
第三章 系统的设计要点 5
3.1相关规格的确定 5
3.2镜头总像素与传感器像素的匹配 6
3.3结构形式 6
第四章 光学系统的设计 7
4.1光学系统设计理论 7
4.2设计指标 8
4.3初始结构选取 8
第五章 系统的优化 9
5.1 关于优化 9
5.2 优化过程 10
第六章 像质评价 12
6.1 像差理论 12
6.2系统像散和畸变 13
6.3 系统点列图 14
6.4 系统像差曲线 15
6.5 系统MTF 16
6.6 系统照度 17
第七章 结论 19
致谢 20
参考文献 22
摘要 随着经济的发展和汽车的普及,车载镜头在汽车中得到广泛的应用,其中包括——车载倒车系统,道路寻路系统,环景系统,行车记录仪等。车载镜头的设计愈来愈受到重视且需求量逐年增加。本文介绍了运用CODEV软件,结合非球面理论,设计一款车载广角镜头。所要设计的镜头F/#为2.8,视场角2w为200°,焦距为0.973mm,后焦为2.048mm,镜头譆@ざ任?1.44mm,1.7mm像高处的照度不低于40%并且具有1G3P的结构,即由一片光学玻璃和三片光学塑料组成。
关键词:车载镜头;光学系统设计;广角;CODEV
A design of vehical wide-angle lens
ABSTRACT With the development of economy and the popularity of cars,vehical lens have been widely used in cars,including car parking system,road wayfinding system,pnorama system,tachograph and so on.The design of vehical lens attracks more attention and the demand increased year by year.The paper introduces how to use software CODEV to design an Vehical lens combining the non-spherical principles.The F-number is 2.8,FOV angle is 200°,the effective focal length and the back focal length are 0.973 mm and 2.048 mm,and the length of the total lens group of the optical system is 11.44 mm.The illuminance of image with the height of 1.7 mm should not be less than 40% and the system has the structure of 1G3P, that it consists of a glass and three plastic lens.
Key words: vehical lens;optical system design;wide-angle;CODE