The invention discloses an experimental facility used for high-low temperature optical evaluation. The experimental facility comprises a sealed box, a sample platform
deck, a temperature sensor, a heat-carrying gas
inlet channel, a heat-carrying gas overflow channel and an
optical test probe, wherein the sample platform
deck is arranged inside the sealed box and used for placement of test samples, the temperature sensor is arranged above the sample platform
deck and used for measuring temperature in the sealed box, the heat-carrying gas
inlet channel is arranged on one side wall of the sealed box and used for leading in heat-carrying gas, the heat-carrying gas overflow channel is arranged on the other side wall of the sealed box and used for exhausting the redundant heat-carrying gas, and the
optical test probe is arranged outside the sealed box, located above the sample platform deck, and used for measuring optical performance parameters of the test samples. The
specific heat capacity of the heat-carrying gas is greater than 500J / (kg* DEG C). According to the experimental facility, heating evenness of the test samples is good, an
optical test lens will not be affected by high and low temperature, no congealing
fog is generated in the box, and optical test accuracy is high.