The difference between Gen2+ and Gen3 image intensifier tube

Shaanxi Ireeda Protective Technology Co., Ltd.

Engineer Manager : Ms.Melin

WhatsApp: +8618291418396

E-mail: melin@ireeda.com

The second-generation intensifier uses a multi-alkali photocathode. In a medium-illuminance environment such as moonlight, basic imaging can be achieved, but the imaging noise is obvious, just like the picture is covered with a layer of "snowflakes". The spatial resolution is low, usually 36-45lp/mm, and the details of distant targets are difficult to distinguish. Once entering a low-illuminance environment, such as a cloudy night, the picture will be blurred and gray, and the observation effect will be greatly reduced. And the ability to resist strong light is weak, and it is easy to appear saturated and white when encountering sudden strong light.

The third-generation intensifier is equipped with a gallium arsenide photocathode, which is much more sensitive than the second generation, and the light conversion efficiency is significantly improved. In the same starlight environment, the picture noise is greatly reduced, the spatial resolution can reach 51-64lp/mm, and the details of distant targets are clearly distinguishable. Even in a nearly completely dark environment, such as deep in a dense forest, stable imaging quality can be maintained. Its service life is extended to more than 10,000 hours, and its ability to resist strong light interference is also stronger, which can effectively avoid image distortion caused by sudden strong light and ensure the continuity of observation.

In general, the second-generation intensifier can meet the basic night observation needs and is suitable for scenes with low precision requirements; while the third-generation intensifier has a qualitative leap in low-light imaging, detail presentation, service life and anti-interference ability, and can better adapt to the complex observation needs of professional fields. The gap between the two is reflected in the difference between "seeing clearly" and "seeing accurately" in actual use.