An erosion control wall system is provided and methods of making it that protect a bank, beach or bluff from soilsand erosion. These substrates are electrically connected to a base metal through the use of conductive paste and are set to a ground potential via the base metal and a rotating drum. The bezel has a rectangular frame shape and holds the liquid crystal panel from a front side of the liquid crystal panel to fix the liquid crystal panel with respect to the rear frame. At the lower-pressure tail end of the cooling element flow channel, an outlet opening is arranged for said secondary cycle. The integrating chamber may be an orthogonal design to preserve the optical geometric characteristics of the light entering the chamber.