The stadium lighting of requirements should have appropriate and uniform illumination and brightness, ideal light color, three-dimensional sense and no glare, to ensure that the lighting requirements of referees, athletes and competitions can be met, and the audience has good visual effects and good TV. broadcast effect.
1. Illumination uniformity
In the main camera direction in the sports field, the ratio of the minimum and maximum vertical illuminance should not be less than 0.4, the ratio of the average vertical illuminance to the average horizontal illuminance should not be less than 0.25; the ratio of the minimum and maximum horizontal illuminance of the venue should not be less than 0.5; The vertical illuminance of the auditorium of the stadium lighting should not be less than 0.25 of the vertical illuminance of the venue.
In practical engineering, since it is necessary to prevent glare while meeting the requirements of illuminance uniformity, the calculation results are often difficult to meet the requirements of these two indicators at the same time. Therefore, it is only possible to ensure the rationality of the lighting design of swimming venues by selecting the appropriate lighting distribution and reasonable lighting methods.
2. Brightness uniformity
In order to form a good viewing environment, in addition to making provisions for the uniformity of contrast, the uniformity of brightness should also be emphasized. Because it is the easiest to see in the place where the brightness distribution is appropriate in the field of view. When the audience is watching swimming, their sight is moving. If the brightness distribution changes too much, and the viewing target changes frequently, it is easy to cause fatigue and discomfort. If the brightness is too uniform, it will also make the environment too rigid. Therefore, appropriate brightness uniformity is required.