In industrial production, different batches of the same product often cause color differences between goods due to deviations in materials, ingredients or production processes. Although the inspectors have carefully compared the color of the goods, because the ambient light source is not standard, the colors seen in different light are different, it is difficult to judge the color difference of the goods. When customers inspect, they will complain or even return the product because the color difference exceeds the standard range. With the standard light source box, the color of the goods can be inspected under the same light source and controllable conditions, which effectively solves the problem of color difference caused by non-standard light sources. Applicable to textiles, printing and dyeing, printing, plastics, pigments, paints, inks, photography and other industries for color fastness evaluation and color heterogeneous degree evaluation.

Some companies in the domestic light source use counterfeit lamps. The product quality and price cannot be compared with regular product lamps, which cannot be met by units with higher quality requirements. Because the lamp is a consumable, the cost is higher. In the past, one lamp was generally more, that is, it must be replaced in 400-500 hours. Because the lamp is always on during use, it has little effect on the service life and damage. The service life of the lamp is mainly at the moment when the lamp is turned on. At this time, the current is large, which affects the service life of the lamp. The high-efficiency electronic rectifier used in the standard light source box now has a working efficiency of more than 95%. , Under normal circumstances, the lamp can work for more than 2000 hours, which is 5-8 times longer than the previous lamp life, which greatly saves the cost of consumables.