Electrostatic lens for image intensifier tube function is to focus on the electron beam. The constituent portion refers to an electric field region composed of a photocathode, a focusing electrode, an auxiliary anode, an anode, and the like.
Image intensifier output screen:
The effect is to convert the enhanced electronic image into a visible image.
The composition is composed of an aluminum foil, a phosphor layer, and a glass layer. The glass layer is part of the image intensifier housing and is the support for the output screen.
Phosphor layer: It is coated on the glass layer with ZnGds (Ag); its function is to receive electrons to produce strong visible light.
Aluminum foil: after being located in the phosphor layer, the thickness is about 0.5 um or less, and is connected to the anode; in order to change the edge sharpness, the output screen of the phenomenon is concave.