摘要
本文设计了一种用于婴幼儿视网膜筛查的广域眼底相机。文中对该系统所包含的照明系统、成像系统的设计方法进行了探讨。首先,根据James Polans宽视场人眼模型和婴儿眼解剖学数据,建立了婴儿眼模型。接着,提出新的锥形光纤方案用于大视场照明。最后,重点介绍了广域眼底相机的成像系统(包括接触镜、中继物镜)的设计方法。设计实例表明:广域眼底相机的视场可以达到130°,对眼底的物方分辨率可以达到10μm。设计结果符合眼底成像设备国家标准YY0634-2008,满足婴幼儿视网膜筛查的要求。
A wide-area fundus camera used for screening the retinae of infants was designed.In this paper,the design methods of the device’s illuminating and imaging systems were investigated.Based on James Polans’wide-field human eye model and a set of ophthalmic anatomy data,an infant eye model was established.Then,a tapered fiber scheme was proposed for wide area illumination.Finally,the design method of a widearea fundus camera imaging system,including the contact lens and relay lens,is introduced.The design example shows that the Field Of View(FOV)of the wide-area fundus camera can reach 130°,and the object resolution of the fundus can reach 10μm.The design results meet the national standards YY0634-2008 for fundus imaging equipment and meet the requirements for infant retina screening.
作者
陈蔚霖
常军
赵雪惠
金辉
CHEN Wei-lin;CHANG Jun;ZHAO Xue-hui;JIN Hui(School of Optics and Photonics,Beijing Institute of Technology,Key Laboratory of Photoelectronic Imaging Technology and Systems of the Ministry of Education of China,Beijing 100081,China;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)
出处
《中国光学》
EI
CAS
CSCD
北大核心
2020年第4期814-821,共8页
Chinese Optics
基金
国家自然科学基金(No.61471039)。
关键词
光学设计
广域视网膜成像
医用光学
optical design
wide-area retinal imaging
medical optics
