Football Stadium

Principles
Standards and Applications

Football Stadium Lighting Concept The special nature of soccer and the diversity of the number of people, different requirements for the field and lighting. Soccer lighting is divided into indoor soccer field lighting and outdoor soccer field lighting, the venue is different from the way to install the light is also different.
The quality of football stadium lighting depends on “Illumination level”, “illumination uniformity” and “glare control degree”. Football Stadium LED lighting is characterized by large lighting space, long distance and high technical requirements for illumination. If use HDTV television broadcast, in order to ensure the image picture vivid and clear, color realistic, vertical illumination, illumination uniformity and stereo, CCT and CRI and other indicators have specific requirements.
Football Stadium “vertical illumination level”. Field camera vertical illumination. Vertical illumination is the illumination of the player vertically and upwards. Too much variation in vertical illumination will result in poor digital video quality. LED lighting design must consider the balance of illumination in all directions to reduce the unevenness of illumination when field cameras are shooting.
Football Stadium “illumination uniformity” Horizontal illuminance is the value measured when the illuminance meter is placed horizontally over the field. Usually a 10mx10m grid is created on the field for measuring and calculating the maximum, minimum and average illuminance of the field.
Football Stadium “glare control degree” Once the glare hazard exists in soccer luminaires, it will produce glare hazards in multiple locations and different angles of the soccer field. Players who play soccer only see a curtain of light with strong stimulation, and cannot see the flying sphere. In the visual perceptual system, produce shaking, dazzling, blinding, glare of discomfort visual effects. Light produces visual fatigue, restlessness and anxiety.

Products Recommended

Lighting Standards for Outdoor Football Fields

Level	Functions	Illumination		Illumination uniformity						Light Source		Glare Index
		Eh	Evmai	Uh		Uvmin		Uvaux		Ra	Tcp(K)
		Eh	Evmai	U1	U2	U1	U2	U1	U2	Ra	Tcp(K)
I	Training and Recreational Activities	200	-	-	0.3	-	-	-	-	≥20	-	≤55
II	Amateur Competitions Professional Training	300	-	-	0.5	-	-	-	-	≥80	≥4000	≤50
III	Professional Competitions	500	-	0.4	0.6					≥80	≥4000	≤50
IV	TV broadcasts National/ International Matches	-	1000	0.5	0.7	0.4	0.6	0.3	0.5	≥80	≥4000	≤50
V	TV Broadcast Major, International Matches	-	1400	0.6	0.8	0.5	0.7	0.3	0.5	≥90	≥500	≤50
VI	HDTV Broadcasts Major, International Matches	-	2000	0.7	0.8	0.6	0.7	0.4	0.6	≥90	≥5500	≤50
-	TV Emergency	-	1000	0.5	0.7	0.4	0.6	-	-	≥80	≥4000	≤50

Note: Direct glare on players, especially on goalkeepers during “corner kicks”, should be avoided.

Lighting Standards for Outdoor Football Fields

Level	Functions	Illumination		Illumination uniformity						Light Source		Glare Index
		Eh	Evmai	Uh		Uvmin		Uvaux		Ra	Tcp(K)
		Eh	Evmai	U1	U2	U1	U2	U1	U2	Ra	Tcp(K)
I	Training and Recreational Activities	300	-	-	0.3	-	-	-	-	≥65	-	≤35
II	Amateur Competitions Professional Training	500	-	0.4	0.6	-	-	-	-	≥65	≥4000	≤30
III	Professional Competitions	750	-	0.5	0.7					≥65	≥4000	≤30
IV	TV broadcasts National/ International Matches	-	1000	0.5	0.7	0.4	0.6	0.3	0.5	≥80	≥4000	≤30
V	TV Broadcast Major, International Matches	-	1000	0.6	0.8	0.5	0.7	0.3	0.5	≥80	≥500	≤30
VI	HDTV Broadcasts Major, International Matches	-	2000	0.7	0.8	0.6	0.7	0.4	0.6	≥90	≥5500	≤30
-	TV Emergency	-	750	0.5	0.7	0.3	0.5	-	-	≥80	≥4000	≤30

Note: Direct glare on players, especially on goalkeepers during “corner kicks”, should be avoided.

FIFK Recommended Values for Artificial Lighting Parameters for

Soccer Stadiums Without Televising

Match classification	Horizontal illumination Eh.ave(lx)	Uniformity of illumination U2	Flare index	CCT	Ra
III	500*	0.7	≤50	>4000K	≥80
II	200*	0.6	≤50	>4000K	≥65
I	75*	0.5	≤50	>4000K	≥20

*The illuminance value of the luminaire maintenance factor is considered, i.e. the value in the table multiplied by 1.25 is equal to the initial illuminance value

Recommended Values of Artificial Lighting Parameters for FIFK Televised Soccer Stadiums

Match classification	Camera Type	Vertical illumination			Horizontal illumination			CCT	Ra
		Ev.ave(lx)	Uniformity of illumination		Ev.ave(lx)	Uniformity of illumination
			U1	U2		U1	U2
V	Slow motion	1800	0.5	0.7	1500~3000	0.6	0.8	>5500K	≥80/90
	Fixed camera	1400	0.5	0.7
	Mobile camera	1000	0.3	0.5
IV	Fixed camera	1000	0.4	0.6	1000~2000	0.6	0.8	>4000K	≥80

Note:
1. The vertical illuminance value is related to each camera.
2. The illuminance value should consider the maintenance factor of the lamps and lanterns, the recommended maintenance factor of the lamps and lanterns is 0.8, therefore, the initial value of the illuminance should be 1.25 times of the value in the table.
3. Illuminance gradient per 5m should not exceed 20%.
4. Glare index GR≤50

II The way to lay lights

Soccer field lighting quality mainly depends on the average illumination and illumination uniformity of the field and the glare control of the lamps. Soccer field lighting should not only meet the players’ requirements for illumination, but also satisfy the audience.

(A) outdoor soccer field

a. Four-corner arrangement

When using the four corners of the field layout, the angle between the bottom of the light pole to the midpoint of the field border line and the field border line should not be less than 5 °, and the bottom of the light pole to the midpoint of the line and the angle between the bottom line should not be less than 10 °, the height of the lamps and lanterns is appropriate to meet the center of the light shot to the center of the field line and the angle between the field plane is not less than 25 °.
a. Four-corner arrangement a

When using the four corners of the field layout, the angle between the bottom of the light pole to the midpoint of the field border line and the field border line should not be less than 5 °, and the bottom of the light pole to the midpoint of the line and the angle between the bottom line should not be less than 10 °, the height of the lamps and lanterns is appropriate to meet the center of the light shot to the center of the field line and the angle between the field plane is not less than 25 °.
a. Four-corner arrangement b

When using the four corners of the field layout, the angle between the bottom of the light pole to the midpoint of the field border line and the field border line should not be less than 5 °, and the bottom of the light pole to the midpoint of the line and the angle between the bottom line should not be less than 10 °, the height of the lamps and lanterns is appropriate to meet the center of the light shot to the center of the field line and the angle between the field plane is not less than 25 °.

2. For the soccer field with television broadcast requirements, the main points of attention in the way of lighting are as follows.

a. When using both sides of the field layout

The use of both sides of the cloth light, lamps should not be arranged in the center of the goal along the bottom line on both sides of 15 ° range.

b. When using the four corners of the site layout

When using the four corners of the arrangement, the bottom of the light pole to the site edge of the line between the midpoint of the line and the edge of the site should not be less than 5 °, and the bottom of the line to the bottom of the line of the line and the angle between the bottom line should not be less than 15 °, the height of the lamps and lanterns should meet the center of the light shot to the center of the site of the line and the angle between the site plane is not less than 25 °.

c. When using mixed arrangement

When using mixed arrangement, the position and height of the lamps should meet the requirements of both sides and four corners of the arrangement.

d. Other

In any other case, the arrangement of the light pole should not obstruct the view of the audience.

(B) indoor soccer field

Indoor soccer field is generally for training and recreation, indoor basketball court can be used in the following ways to lay lights.

1. Top arrangement

Only suitable for the lower requirements of the scene, the top lamps will produce glare on the players, high requirements should be used on both sides of the arrangement.

2. Sidewall installation

Side wall installation is suitable for the use of floodlights, can provide better vertical illumination, but the projection angle of the lamps should not be greater than 65 °.

3. Mixed installation

Use the combination of top installation and sidewall installation to arrange the lamps.

III The choice of lamps and lanterns

Outdoor soccer field lighting selection needs to consider the installation location, lighting beam angle, lighting wind resistance coefficient, etc. VKS stadium lights, light source using imported brands, beautiful, generous shape will make the entire stadium appears more high-grade, comparable with the national soccer team training ground special lights, after professional optical design, beam precision, greatly improve the utilization of lamps, lights installed around the field without glare The light is installed around the field without glare, not blinding, so that the athletes play better in the game.