医用输尿管内窥镜光学系统设计  

Design of optical system for medical ureteroscope

作　　者：惠宇鑫 向阳[1] 侯明旺 袁晓涵 于璐 HUI Yuxin;XIANG Yang;HOU Mingwang;YUAN Xiaohan;YU Lu(School of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130022,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：《应用光学》2024年第5期916-922,共7页Journal of Applied Optics

基　　金：吉林省科技发展计划重点研发项目(20220201097GX)。

摘　　要：为了满足微创医疗手术的实际需要,设计一款用于检查治疗泌尿系统疾病的医用内窥镜,既能解决传统输尿管镜口径过大的问题,又能保留目视系统的高分辨率。采用光楔实现光线的折转,在硬性内窥镜中通过光纤传像束传像,使用Zemax软件最终设计的内窥镜系统F数为4.5,系统物方视场角为80°,视向角为6°,光纤传像束像圈直径为0.85 mm,光学镜片直径小于1 mm,工作距离为6 mm,工作长度为430 mm,调制传递函数(modulation transfer function, MTF)在120 lp/mm处大于0.2,成像质量符合目视需求。In order to meet the actual needs of minimally invasive medical surgery,the Zemax software was used to design a medical endoscope for the treatment of urinary system diseases,which could not only solved the problem of the excessive diameter of traditional ureteroscopes,but also retained the high resolution of the visual system.The light wedge was used to convert the light,and passed through the fiber transmission beam in a rigid endoscope.The final designed endoscope system has an F number of 4.5,a system object field of view of 80°,a viewing angle of 6°,a circle diameter of fiber transmission beam of 0.85 mm,an optical lens diameter of less than 1mm,a working distance of 6 mm,and a working length of 430 mm.The modulation transfer function(MTF)is greater than 0.2 at 120 lp/mm,and the imaging quality meets the visual requirement.

关 键 词：微创医疗 输尿管 内窥镜 高分辨率 

分 类 号：TN202[电子电信—物理电子学] TH773[机械工程—仪器科学与技术]