A fogging test chamber is specially designed equipment by Envisys to perform fogging tests on headlamps of automobile industry. The chamber creates a controlled environment that simulates the conditions that can cause fogging, such as high temperature, high humidity, infra-red radiation and rain simulation. In real world both sides of lamp are exposed to different environmental conditions. For example head lamp of the car, one side will be exposed to heat of the engine and humidity of the climate and the other side (lens side) will be exposed to ambient temperature, humidity, sun radiation and rain.