For a period of time, publicity about "blue light hazards" has aroused widespread social concern. Ordinary people who do not understand the real situation even talk about "blue" discoloration, but they are actually misled.
First of all, blue light components are ubiquitous whether it is natural light or artificial lighting. From the perspective of photobiological safety, the blue light produced by qualified LED lamps at the same color temperature is no higher than that of other types of light sources, and is much lower than the blue light radiation dose in sunlight.
Secondly, Blu-ray is indispensable. Research shows that blue light, as an important band of natural light, is crucial for regulating human biological rhythms and metabolic processes and maintaining human health.
Third, the harm of blue light mainly lies in excessive brightness and long-term exposure. As the saying goes, too much is never enough. Lamps with a brightness less than 10,000cd/m2 are non-hazardous and inspection-free products. In fact, most LED classroom lights from regular manufacturers meet this standard. In addition, during actual use, the brightness and color temperature of the light can be flexibly adjusted according to teaching activities, such as reducing the brightness during breaks and using warm color temperatures for liberal arts teaching (less blue light components at warm color temperatures). This can not only effectively reduce blue light radiation, but also Changing lighting environments can also help reduce eye strain.
