Experimental facility used for high-low temperature optical evaluation

Abstract

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.

Description

technical field [0001] The invention relates to optical information measurement technology, in particular to an experimental device for high and low temperature optical evaluation. Background technique [0002] The liquid crystal molecules are arranged in an orderly manner in the cell, and the operation is controlled by the driving voltage between the cells, which is the basic characteristic of realizing the display of the liquid crystal panel. The applicable temperature of different liquid crystal molecules is different, and the molecular characteristics will develop to two extremes of liquid or crystal with the temperature change. For problems such as black screen (white screen) and slow response time, especially for military and outdoor products, LCD panels need to have higher temperature reliability. [0003] Based on the above background, the characteristic evaluation of LCD panels in high and low temperature environments is an important evaluation method to avoid defe...

AI Technical Summary

Problems solved by technology

[0008] Disadvantages: The optical lens cannot adapt to the high and low temperature inside the cabinet, and the corresponding environmental optical evaluation cannot be carried out

If a lens is added outside the box, since the traditional temperature control box uses air as the heat transfer medium, it is difficult to avoid condensation fog on the inner wall of the temperature control box, which will affect the optical test

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