Trueyard 图雅得 NVM-2550 夜视仪详细参数：
参数 指标
增强管 1代+
镜头 第三代True-lens光学镜头
分辨率 45lp/mm
物镜倍率Lens magnification,x 5
物镜系统Lens systems 80mmF/1.7
FOV at distance 100m/110yards,m 15/62
视场Field of view,deg 12.5
调焦范围Focus range,m 1.0 to infinity
物镜直径Objective lens diameter,mm 50
重量Weight,g 460
尺寸Overall dimensions,mm 200X80X50
观察距离Detecyion range,m 350/260
瞳孔直径Exit pupil duaneter,mm 6
屈光度Eyepiece Duioer adjustment,dptr +4/-4
瞳孔距离Eye relief,mm 15
电池寿命（开IR）Battery life IR on,hour Up to 20
电池寿命（关IR）Battery life IR on,hour Up to 60
IR功率IR Power,mw 25≤
IR波长IR wavelength,nm 850
IR有效距离IR effective distance,m 25
防水标准IP standard of water-resistence IPX4
湿度Humidity,% 93
操作温度Operating temperature,℃ -30°to+45°
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