20/80mm热成像双视场镜头采用锗玻璃制成，具有视场切换快的特点，一般与热成像探测器、云台、可见光一体机机芯或者长焦监控镜头集成热成像云台摄像机，一般用于特定视场的目标监控。
项目/ Item | 数值/ Value | 说明/ Remark | ||
焦距/ Focal Length | 25&80mm | 2 FOV | ||
F/# | 1.2(80mm)&1.1(25mm) | |||
波段/ Waveband | 8~12µm | |||
透过率/ Transmission | 80% | 8~12µm，average | ||
畸变/ Distortion | <2%(80mm) | <5% (80mm) | ||
后工作距离/ BWD | 11.1mm | Back Working Distance | ||
MTF / at 20cy/mm | >35% at all zoom positions | |||
调焦范围/ Focus Range | 3m~∞ (25mm) | 10m~∞ (80mm) | ||
调焦时间/ Focus Time | <7s | |||
变焦时间/ Switch Time | <3s | |||
驱动电压/ Drive Voltage | DC12V (0.5A average) | |||
机械尺寸/ Dimensions | Φ88×L92.6mm | |||
重量/ Weight | 1.5kg | |||
镜头控制/ Lens Control | RS485 | 可定制Upon Request | ||
密封等级/ Sealing | IP67 | Front Lens | ||
工作温度/ Working Temperature | -20℃~+60℃ | |||
存储温度/ Storage Temperature | -45℃~+85℃ | |||
探测器及视场角 / Detector and FOV | ||||
384×288,17μm | 4.7°×3.5°~15°×11.2° | 640×480,17μm | 7.8°×5.8°&24.6°×18.5° | |
