微光夜视成像系统开发与视觉效果评价  

Development and visual effect evaluation of a night vision imaging system

作　　者：王聪 李玉亮 师国伟 于飞 陈珊 贾宏博 WANG Cong;LI Yuliang;SHI Guowei;YU Fei;CHEN Shan;JIA Hongbo(Department of Medical and Research,Air Force Medical Center,Beijing 100142,China)

机构地区：[1]空军特色医学中心医研部,北京100142 [2]空军特色医学中心航空人因工程研究室 [3]空军特色医学中心航空生理鉴定训练研究室 [4]空军特色医学中心

出　　处：《空军航空医学》2023年第2期97-101,共5页AVIATION MEDICINE OF AIR FORCE

摘　　要：目的开发一种微光夜视成像系统,用于飞行员夜间视觉体验训练。方法采用远红光发光二极管(light emitting diode,LED)调光、数字光处理及投影光学系统仿真设计等技术,开发了一种由LED光源、调光模块、视频处理模块、数字微镜器件、数字光处理控制模块、投影主镜等6个子系统组成的微光夜视成像系统。为验证系统性能和成像效果,测试了系统的辐射光谱、对比度和均匀性等关键技术指标;选取12名视觉功能良好的受试者,对夜视镜改善视觉功能、特殊视觉现象和不同照度成像效果等进行了主观评价打分。结果系统光谱峰值波长743.1 nm,亮度对比度为143:1,照度均匀性达87.2%,系统光谱能量集中在夜视镜敏感光谱范围,具有较好的成像质量。受试者对夜视镜改善视觉功能、特殊视觉现象和不同照度视觉效果的打分结果依次为(8.08±1.16)、(7.58±0.90)分和(8.25±1.42)分,评价为效果非常好或比较好的共30人次。结论开发的微光夜视成像系统具有较好的成像质量和接近真实的微光场景模拟视觉效果,可用于飞行员夜间视觉体验训练。Objective To develop a night vision imaging system for pilots'night vision training.Methods Using technologies of far-red light emitting diode(LED)dimming,digital light processing and projection optical design,a night vision imaging system composed of 6 subsystems was designed:LED light source,optional module,video processing module,digital micromirro device,digital light processing control module,projection primary mirror.The radiance spectrum,brightness contrast and uniformity were tested to verify the system performance and imaging quality.The night vision goggle(NVG)effects of visual function improvement,special visual phenomena and imaging quality of different luminance were evaluated by 12 subjects with good visual function.Results The system peak wavelength was 743.1 nm,brightness contrast was 143:1,and brightness uniformity was 87.2%.The spectrum energy was concentrated in the NVG sensitive spectrum,which ensured good imaging quality.The scores of NVG effects of visual function improvement,special visual phenomena and imaging quality of different luminance were(8.08±1.16),(7.58±0.90)and(8.25±1.42),respectively.The results were regarded as very good or relatively good by 30 people.Conclusion The imaging quality and night vision effects for the developed night vision imaging system are good.It can be used in pilot night vision training.

关 键 词：夜视训练 夜视成像 航空生理训练 夜视镜 

分 类 号：R857.1[医药卫生—航空、航天与航海医学] R318[医药卫生—临床医学]