【摘要】 为提高静脉注射的成功率,设计了一款头戴静脉显示光学系统,该系统由红外成像系统与穿透型目镜式头戴显示器组成。近红外成像系统具有F/1.59的大数值孔径,利于弱红外散射光的收集成像,设计中采用了旋转对称的二次曲面设计,系统的质量是相应球面系统的77.8%。穿透型头戴显示器结构简单紧凑,采用了旋转对称的二次曲面设计,系统的质量是相应球面系统的55.6%。设计结果显示,近红外成像系统成像质量优异,分辨率可达扩展图形阵列(XGA)(1024pixel×768pixel)。穿透型目镜式头戴显示器具有10mm的出瞳直径,50mm的出瞳距离,0.068D的最大场曲(D为屈光度),0.372%的最大相对畸变以及XGA(1024pixel×768pixel)的显示模式分辨率。双目光学系统的总质量为44g。较之现有的静脉显示系统,本系统具有结构简单紧凑、数值孔径大、分辨率高、重量轻等特点。更多还原

【Abstract】 A head-mounted vein imaging optical system composed by the infrared imaging system and see-through head-mounted eyepiece displayer is designed to greatly improve the success rate of intravenous medication.The near infrared imaging system has large numerical aperture of F/1.59,which is beneficial to the collection of the weak infrared scattered light.We choose quadric surface design of rotational symmetry,the weight of the imaging system is 22.2%lighter than the corresponding spherical system.The structure of the see-through head-mounted eyepiece displayer is simple and compact,because of its quadric surface design of rotational symmetry,which is 44.4%lighter than the corresponding spherical system.The design results show that the imaging quality of the nearinfrared imaging system is excellent,and its resolution can reach extended graphics array(XGA)(1024pixel×768pixel).The see-through head-mounted eyepiece display gets a 10 mm exit pupil,a 50 mm eye relief,a maximum field curvature of 0.068 D(Dis diopter),a maximum relative distortion of 0.372% and display model resolution of XGA(1024pixel×768pixel).The total weight of binocular system is about 44 g.Comparing with the current vein display system,it has the characteristics of simple and compact structure,large numerical aperture,high resolution and light weight,etc.更多还原