Condensation prevention type transmission window for CMS module test chamber

A condensation prevention type transmission window for a camera monitor system module test chamber, the transmission window being provided at the module test chamber, wherein the transmission window comprises:

• a multilayer glass panel in which heating wires are provided on upper, lower, left, and right side surfaces thereof,
• wherein the transmission window is coupled with an air injector to form an air curtain on the transmission window,
• wherein the air injector comprises;
• an upper air injection pipe provided at an upper side edge of the transmission window and having a nozzle for injecting air toward a lower side of the transmission window;
• a lower air injection pipe provided at a lower side edge of the transmission window and having a nozzle for injecting air toward an upper side of the transmission window;
• and
• a flow path selection control valve provided at a branching point on a main air flow path for distributing air into the upper air injection pipe and the lower air injection pipe,
• wherein the flow path selection control valve is controlled on the basis of temperature of air contacting with the transmission window, such that when the temperature is low, air is injected from the lower air injection pipe, and when the temperature is high, air is injected from the upper air injection pipe, so the air curtain is spread out on the transmission window.