The image intensifier generation 2+ has greatly improved the signal-to-noise ratio, transfer function, resolution, etc., which makes it have a higher spectral response in a wide wavelength range, and can be obtained for various observation scenarios. Better contrast, no matter what kind of background the jungle, desert, coast, water surface, snow, etc. have an excellent observation effect. The image intensifier is equipped with a power supply with automatic shutter characteristics and can automatically adjust the gain. It can work day and night around the clock, and can obtain excellent images at night and during the day.