高清晰低畸变细径化电子内镜物镜设计(英文)  

Design of an Objective Lens for Womb Electronic Endoscope with High Definition,Non-blind Spot and Thinner Outer Diameter

作　　者：张梅[1] 王肇圻[1] 

机构地区：[1]南开大学现代光学研究所光电信息技术科学教育部重点实验室,天津300071

出　　处：《光子学报》2008年第2期328-331,共4页Acta Photonica Sinica

基　　金：Supported by the Key Research Foundation of Scientific and Technical Committee of Tianjin(06YFSZSF00600)

摘　　要：设计了一款用于医疗方面的视场为74°的电子内镜物镜.电子内镜外径为8mm从而实现无麻醉,内镜前端可弯曲来实现无盲区检测.物镜有效焦距为4mm,后工作距为4.8mm.系统的畸变最大值少于4%,场曲最大值为0.27mm.为了提高成像质量,将非球面引入此五片镜系统.所设计的光学系统尤其适用于0.25英寸CCD像传感器,且显示模式为SVGA.An electronic endoscope objective lens with a field-of-view of 74° was designed for medical application. The electronic endoscope is with an outside diameter of 8 mm that makes the anaesthesia avoidable, and a flexible head that realizes non-blind spot diagnosis. The effective focus length of the objective is 4 mm while the back working length is 4.8 ram. The maximum distortion of the system is less than4% and the maximum field curvature is0.27 mm. In order to improve the imaging performance, the aspheric surface into the system of 5 elements was introduced. The designed optical system especially matches the requirements of a CCD detector with 0.25 inches and SVGA display model.

关 键 词：光学设计 反摄远镜头 电子内窥镜 物镜系统 非球面 

分 类 号：O439[机械工程—光学工程] TH74[理学—光学]