???? Lighting Comfort in Sports Stadiums ????

???? Lighting Comfort in Sports Stadiums ????

The lighting design of sports stadiums demands consideration of numerous indicators such as horizontal illuminance, vertical illuminance, illuminance uniformity, illuminance gradient, glare control, light source color temperature, and color rendering. ?? When it comes to lighting design, illuminance must be maintained, and the maintenance coefficient is typically 0.8. ???

1) In sports stadium lighting, horizontal illuminance refers to the horizontal illuminance of the venue's ground. It's a crucial indicator for gauging the lighting level of the stadium. Different sports have varying requirements for training, competition, and color TV broadcasting. ????

2) Vertical illuminance is another significant indicator in sports lighting design. Vertical illuminance typically refers to the illuminance on the vertical plane 1.5 meters above the ground of the competition area. It has a major impact on both the audience watching the game and TV broadcasting. Vertical illuminance is divided into vertical illuminance facing fixed positions (cameras) and vertical illuminance facing four directions. The vertical landing of the stands and the audience seats should be 25% of the vertical illuminance of the venue. ????

3) The ratio of horizontal illuminance to vertical illuminance is generally controlled within the range of 0.5 - 2. ??

4) Illuminance gradient is yet another indicator of illumination uniformity. It's expressed as the change rate of illuminance at a certain point and the illuminance at eight adjacent points around it, and is generally required to be less than 20%. ??

5) The color temperature of the stadium lighting source usually falls within the range of 4000 - 6000K. Generally, the color rendering index Ra is required to be greater than 65, and when there's color TV broadcasting, Ra is required to be greater than 80. ??

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