投影式头戴静脉显像光学系统的设计  

Optical system design of the head-mounted projective display for vein imaging

作　　者：翟奕[1,2] 刘永基[1,2] 何远清[1,2] 

机构地区：[1]南开大学现代光学研究所,天津300071 [2]光电信息技术科学教育部重点实验室,天津300071

出　　处：《中国光学》2015年第1期114-120,共7页Chinese Optics

基　　金：国家自然科学基金资助项目(No.81170873,No.11104149)

摘　　要：为了辅助静脉穿刺及相关的医疗操作,设计了一款基于投影式头戴显示器(HMPD)的静脉显像系统,其光学系统由近红外成像系统和穿透型HMPD构成。利用光学设计软件ZEMAX优化设计近红外成像系统,使其具有F/2.6的大数值孔径,有利于弱反射红外光的收集成像。穿透型HMPD采用与近红外成像系统相同的光学结构,有利于简化系统的加工装调。设计结果表明,近红外成像系统成像质量优异,分辨率达到QXGA(2 048×1 536)。穿透型HMPD具有18 mm的大出瞳直径及25 mm的大出瞳距离,场曲小于0.03 D,畸变小于0.32%,达到QXGA分辨率显示模式。与现行的静脉显像系统相比,本显像系统结构简单紧凑、佩戴舒适,且具有超高分辨率,是一款适用于辅助医疗的目视系统。In order to assist venipuncture and related medical operations , a novel vein imaging device based on head-mounted projective display （ HMPD） is designed .The correspondent optical system consists of nearinfrared imaging system and see-through HMPD .With the help of optical design software ZEMAX , the near-infrared imaging system has a large numerical aperture with F number of 2.6 , which is extremely conducive to receive and to image the weak reflected nearinfrared light .The structure of the optical system of HMPD is same as that of near-infrared imaging part , which is conducive to simplify the processing and assembly .The results indicate that the performance of imaging system is excellent and the resolution is up to QXGA （2 048 × 1 536）.The see-through HMPD possesses an 18 mm exit pupil and a 25 mm eye relief, with the field curvature less than 0.03 D, the distortion less than 0.32%and the resolution up to QXGA .Compared with the current vein imaging device , the proposed system is characterized by compact structure , comfort wearing and ultrahigh resolution , which is suitable for assistant tools in venipuncture techniques .

关 键 词：静脉显像 投影式头戴显示器 光学设计 

分 类 号：TN873.8[电子电信—信息与通信工程] O439[机械工程—光学工程]