How to deeply understand the stadium lighting parameters?

Light, which we come into contact with every day, is very familiar, but to understand light deeply, for many people, is abstract physical knowledge. In fact, the application of light is more interesting. For example, special lighting has plant lighting that can accelerate plant growth, the prospect of plant lighting is promising, many technology giants have crossed the line to “grow vegetables”, there are ultraviolet disinfection LED lamps, and plants that can glow at night like fireflies. Here, I want to tell you about stadium lighting in special lighting.

Stadium lighting is not the same as lighting, its most direct goal is to provide basic lighting for athletes, referees, coaches, spectators and cameras and cameras, the pursuit of as close to natural light as possible, is an auxiliary existence, the better its quality, the less easy to pay attention to. The purpose of lighting is to highlight the illuminated object or the light itself, so that it is more attractive, such as a light show, the light is the existence of the protagonist.

So, how does stadium lighting approach natural light? First, in the ability to restore an object’s original color. I do not know if you have encountered such a situation, in the fruit shop, see the fruit is particularly bright, but when out of the store, in the sun to see again, it feels general. It’s because the lights in the fruit store are red. Stadium lighting is the pursuit of the most real side of the matter to show. This tests the color rendering ability of the stadium lighting light source. The color rendering ability of the light source is usually measured by the color rendering index, and the color rendering index of the sun is defined as 100 for reference. The color rendering index is between 90-100, which is excellent and can meet the need for accurate color contrast, and the stadium lighting is the pursuit of this excellent color rendering ability. For example, the light source color rendering index of Hishine stadium lamps is above 90. The color rendering index is between 80-89, which is good and realistic to the object color display. The color rendering index is between 60-79, belonging to the general, in this light, the correct judgment of color is no problem. The color rendering index is between 40-59, the color rendering effect can be barely, and it is no problem to use in places with relatively low color requirements. The color rendering index is between 20-39, it is very poor, and the lamps with such poor color rendering ability are basically no one uses them now.

Of course, stadium lighting is not only pursuing close to natural light is enough. There is also the glare value that controls the stadium lighting, the higher the glare value, the more dazzling the light. The brighter the stadium, the more likely it is that the glare value will be high. The direct way to avoid glare is to try to avoid the stadium lighting directly into the human eye, so that all the light entering the human eye is the light after the reflection of things, the practice is to hang the stadium lighting in the high air, so that even if the sports are looking up at the ball in the air, it will not be the light of the stadium lighting directly into the eyes. Of course, considering economic and security issues, stadium lighting will not be hung very high. The height of the light pole in the five-a-side football field is generally between 8 and 15 meters, the height of the light pole in the seven-a-side football field is generally between 12 and 20 meters, the height of the light pole in the 11-a-side football field is generally between 15 and 25 meters, and the height of the light pole in the 400-meter athletics field is generally between 25 and 35 meters.