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。 To improve the success rate of intravenous injection, a head-mounted vein display optical system is designed, which consists of an infrared imaging system and a penetrating eyepiece head mounted display. The near-infrared imaging system has a large numerical aperture of F / 1.59, which facilitates the collection and imaging of weakly scattered infrared light. A rotationally symmetric quadric surface design is adopted in the design. The mass of the system is 77.8% of that of the corresponding spherical system. The penetrating head-mounted display has a simple and compact structure and uses a rotationally symmetric quadric surface design. The quality of the system is 55.6% of the corresponding spherical system. The design results show that the NIR imaging system has excellent image quality and resolution up to XGA (1024 pixel × 768 pixel). The penetrating eyepiece head mounted display has an exit pupil diameter of 10 mm, an exit pupil distance of 50 mm, a maximum field curvature of 0.068D (D is dioptric power), a maximum relative distortion of 0.372%, and a display mode resolution of XGA (1024 pixel x 768 pixel) rate. The total mass of the binocular optical system is 44g. Compared with the existing venous display system, the system has the advantages of simple and compact structure, large numerical aperture, high resolution and light weight.