When these short tubes, more electrons are released. This special process allows the second generation of infrared night vision devices to enhance the light and provide a brighter and clearer image than the first generation. Expensive because of the addition of this! The third generation is based on the second generation by adding a sensitizer - gallium arsenide, thus obtaining a brighter and clearer image. In addition, an ion barrier film is added to prolong the service life of the tube. Gallium arsenide is a deep-sea extract, and because the extraction process is more complicated, it is also one of the reasons for the high price. The fourth generation is a contraband because it involves some military technical problems and cannot be imported.

 

The algebra of the intensifier tube directly affects the observation distance and observation effect of the infrared night vision device. Of course this is not absolute. The effect of the infrared night vision device is also affected by the quality of the lens, the size of the aperture, the size of the multiple, the interference of the internal original devices, and the impact of the internal structure.