2. Influencing factors of badminton court lighting quality
1) Illumination level: whether the illuminance reaches the standard.
Generally speaking, the vertical illumination should be greater than the horizontal illumination 1/2. When the vertical illumination is equal to the horizontal illumination, the mobile environment is ideal. Badminton venue lighting requirements are as follows:
2) Uniformity of illumination: whether the illumination of the sports field is uniform.
The uniformity of lighting is used to measure the visual conditions in the venue. Uniformity means that the lighting of the venue should be uniform, and there should be no too bright or too dark areas to provide good visual conditions for athletes, spectators and referees. For example, in TV broadcast, when the camera takes a panoramic view of the competition area, the illumination cannot change greatly, otherwise the camera will be exposed.
3) Glare: Whether the glare is obvious.
Glare is another important factor to evaluate lighting quality. Glare is related to the installation mode, installation height, quantity, installation density and light distribution of lamps.
When there is too high brightness contrast in the field of vision, people will feel dazzling, which will affect visibility. Looking at the sun at noon on a sunny day, I feel that I can't open my eyes, which is the glare caused by excessive brightness.
The glare in badminton court is direct glare. Because of the low ceiling, athletes' eyes are uncomfortable for a long time, which seriously affects their observation of the ball movement.
4) Brightness ratio: the color and brightness difference between the object and the background.
Eyes can distinguish objects on the background, which requires one of two conditions, that is, the colors of the background and the objects are different, or the background and the objects have a certain brightness contrast. If the object is bright and the background is slightly dark, the better the vision; On the contrary, if the background is brighter than the object, the vision will be obviously reduced. When the lighting conditions are poor, especially the lack of brightness difference, it may cause false visual phenomena, distort the perceived objects, and have a bad influence on judging important information.
Badminton is white in color, and the background wall is white, which will cause the players to see the ball clearly. In order to increase the color difference between badminton and background wall, the light and shadow effect of the lamp is used to reduce the brightness of the background wall. The opaque lampshade can be used to block the shadow of the lampshade and project it onto the wall, while another part of the light shines on the ground and reflects on the court, thus reducing the brightness of the background wall, making the contrast between badminton and the background very different, and making the field of vision of badminton clearer when playing.
5) Stability of lighting: whether there is stroboscopic.
The stability of lighting directly affects people's health, and unstable lighting will lead to the decline of athletes' eyesight. Lighting stability is mainly reflected in stroboscopic effect. Strobe is caused by the periodic changes of current and luminous flux when AC power is supplied, which makes people have an illusion when observing moving objects. The periodic change of current leads to the instability of light source. Thereby cause obvious stroboscopic illumination. When observing the movement of badminton, you can see a vague shadow with low resolution.
3. The use of badminton court lighting (taking spotlights as an example)
Spike LED high-power lamps adopt American high-brightness CREE LED, and the lamp efficiency is as high as 85-90lm/W, which can directly replace traditional lighting products such as metal halogen lamps with high color rendering, and provide sufficient and uniform lighting for badminton courts, table tennis courts, billiards and other sports venues. Strive to provide the best viewing enjoyment for the competition with high-quality white LED lighting.
High-power LED lamp (SPL-288) is energy-saving, low-carbon and environment-friendly, with an energy-saving rate of over 70%. This LED lighting lamp adopts unique and innovative modular integrated design and professional optical lenses, which can effectively illuminate the stadium, while the brightness of the audience is small, thus improving the brightness ratio of the stadium and helping athletes to see the ball path clearly. The spike lamp has high overall light efficiency, high color rendering index, instant start-up, no stroboscopic, no bad glare and wide working voltage range; With overvoltage and undervoltage protection function, it is safe and reliable, with long service life and simple installation and maintenance.
Spike LED lighting has 18 patents, including 5 invention patents, and all technical performances have reached the national standards. The products have passed the international certifications such as UL, ROSH, ETL and CE. With its excellent lighting effect, excellent energy-saving level and intelligent humanized control, it has been supported and recognized by many new and old customers.
4. Badminton lighting design and effect
Spike indoor badminton court lighting case: sphericity 12m, 8 standard badminton courts, average illumination in the court 1200lux (required for TV broadcast).