大靶面、长工作距高清工业内窥镜设计  

Design of High-Definition Industrial Endoscope with Large Optical Format and Long Working Distance

作　　者：杨凯明 向阳[1] 王鑫[1] 张进 刘林 侯明旺 Yang Kaiming;Xiang Yang*;Wang Xin;Zhang Jin;Liu Lin;Hou Mingwang(School of OptoElectronic Engineering,Changchun University of Science and Technology,Changchun 130022,Jilin,China)

机构地区：[1]长春理工大学光电工程学院,吉林长春130022

出　　处：《光学学报》2022年第22期142-149,共8页Acta Optica Sinica

摘　　要：针对传统硬性工业内窥镜在炉窑内部监测视野小、分辨能力低和工作距离短的问题,设计一种大靶面、长工作距的高清工业内窥镜。采用一体化设计思路,设计内容包含广角像方远心物镜系统和对称式消像差棒镜中继系统。所设计的高清工业内窥镜的光学F数为6、视场角为103°、光学长度为1040 mm、光学外径不大于26 mm、靶面对角线长度为16 mm、系统像方远心度不大于1.8°,且调制传递函数不小于0.2@160 lp/mm。实验结果显示,所设计的工业内窥镜在40 cm至无穷远范围内可清晰成像,并且在5 m远处可分辨10 mm的线对宽度,角分辨率为8.73 C/(°)。该内窥镜的设计优势:系统的接收器靶面尺寸大,物方分辨率高;对称式消像差棒镜中继系统的延展性好,光通量高;物像以远心的形式衔接,光线传播平滑,像面照度均匀。In terms of the problems of the traditional rigid industrial endoscope,such as small monitoring field,low resolution,and short working distance in the furnace,a highdefinition industrial endoscope with large optical format and long working distance is designed.The integrated design is adopted,and it includes an image telecentric objective system with wide angle and a symmetric aberration elimination relay system with the rod lens.The highdefinition industrial endoscope is designed as follows.Its optical Fnumber is 6,the field of view is 103°,the optical length is 1040 mm,the optical outside diameter is not more than 26 mm,the target diagonal is 16 mm,the system image telecentricity is not more than 1.8°and the modulation transfer function is not more than 0.2@160 lp/mm.Experimental results show that the designed industrial endoscope can obtain a clear image in the range from 40 cm to infinity and can resolve the line pair width of 10 mm at a distance of 5 m,with an angular resolution of 8.73 C/(°).The endoscope has advantages in view of design.Specifically,its receiver target surface is large,and the object resolution is high.The symmetric aberration elimination relay system with the rod lens has good ductility and high luminous flux.Objects and images are connected in telecentric form,with smooth light transmission and uniform illumination on the image surface.

关 键 词：光学设计 工业内窥镜 中继系统 F数 

分 类 号：TH776[机械工程—仪器科学与技术]