Fixed grid structure?

Convergence grid: There is a flat plate on the outside of the grid to protect the gap between the lead strip and the lead strip inside the grid. The strip filler between the lead strip and the lead strip is focused on the focus line. The direction is slanted to ensure that the horizontal extension of each lead strip is brought together and then packaged up and down with an aluminum plate.

The characteristic of the convergence grid is that each lead strip in the interior is inclined at a certain angle to the center with the center lead strip as a midpoint, so that the horizontal extension lines of the strips of the strips are gathered together, and the line gathered together is called Convergence line. The point at which the convergence line intersects the vertical line at the center of the grid is called the focus.

Author：Alina