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The reference specifications of sport field lighting design

2,627 Published by admin 05 22,2019

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Football field lighting standard

Boland Park LED Cricket Stadium Lights

The most direct goal of led football field light is to provide basic lighting for athletes, audiences, coaches, spectators, and cameras and video cameras. The light seeks to be as close to natural light as possible and is an auxiliary existence for sports.

Competition Level			Calculate the orientation	Horizontal illumination			Vertical illuminance			light source
				Eh	Illumination uniformity		Ev	Illumination uniformity		CCT	CRI
				lx	U1	U2	lx	U1	U2	Top (K)	Ra
Non TVs	Ⅰ	Training and entertainment competition		200	–	0.5	–	–	–	>4000	≥65
	Ⅱ	League competition		500	–	0.6	–	–	–	>4000	≥65
	Ⅲ	Professional competition		750	–	0.7	–	–	–	>4000	≥65
For TV Relay competition	Ⅳ	International level	Fixed camera	2500	0.6	0.8	2000	0.5	0.65	>4000	≥65
	Ⅳ	International level	Field camera	2500	0.6	0.8	1400	0.35	0.6	>4000	≥65
	Ⅴ	National coherent broadcasting	Fixed camera	3500	0.6	0.8	>2000	0.6	0.7	>4000	≥65
	Ⅴ	National coherent broadcasting	Field camera	3500	0.6	0.8	1800	0.4	0.65	>4000	≥65

Horizontal illuminance

The illuminated playing surface takes up a major part of the field of view for anyone in a sporting venue, whether players, officials or spectators. Horizontal illuminance (Eh) represents the illuminance on this horizontal plane at ground level. It serves primarily to create a stable visual background against which the eye can discern players and objects.

For non-televised lighting classes, an average horizontal illuminance of between 50-100 lux and 750 lux is required, depending on the sport in question and on the lighting class. For televised competitions, the vertical illuminance level is more important than the horizontal illuminance level; to ensure that the television picture has a well-balanced brightness, the ratio between the average vertical and horizontal illuminance should match as closely as possible, but shouldn’t exceed a 0.5 to 2 ratio. The horizontal illuminance shouldn’t be less than half the vertical illuminance or greater than twice the vertical illuminance.

Vertical illuminance

The athletes in any particular sporting event, as well as the ball they’re using, can be understood as vertical surfaces. This means that we need to keep vertical illuminance (Ev) primarily in mind when we light them.

To guarantee an optimal view and make it possible for the human eye to identify players from every direction, we should generally measure Ev at a height of 1.5 meters, which corresponds approximately to the faces of the players.

Experience shows that there’s an intimate relationship between vertical and horizontal illuminance. For sports with no specific vertical illuminance criteria, vertical illuminance will be sufficient if the required horizontal illuminance is achieved, and if the lighting design rules are followed.

Televised events involve exceptions to this rule of thumb; vertical illuminance has a major influence on the quality of a final television or film picture. Television broadcasting generally calls for an average Ev of between approximately 1000 lux and 2000 lux.

Uniformity

Ensuring uniformity is important in avoiding adaptation problems for both players and spectators. If uniformity is inadequate, certain objects or player details might be difficult to see from certain positions.

The ratio of the lowest to the highest illuminance (U1 = Emin/Emax)

The ratio of the lowest to the average illuminance (U2 = Emin/Eaverage)

In non-televised situations, the uniformity of the horizontal illuminance is generally specified as between 0.5 to 0.7 (Emin/Eaverage) depending on sport and lighting class.

In televised situations, high uniformity is necessary for smooth and natural-looking scenes, especially in this era of HDTV; horizontal illuminance is generally 0.8, whereas vertical illuminance in the direction of fixed cameras requires a uniformity value of 0.7 (Emin/Eaverage).

Even when the uniformity ratios as we’ve defined them are acceptable, changes in illuminance can be disturbing if they happen too quickly. This problem is most likely to arise when a television camera pans. The illuminance uniformity for TV/film coverage at a certain grid point thus has to be expressed as a percentage change from the average adjacent grid points. This is called the uniformity gradient.

A common uniformity gradient value for both horizontal and vertical illuminance in the direction of main cameras of ≤20% on a 4m calculation grid might ensure smooth panning between one area to another.

The standard of sports field

Only for outdoor sports fields, it can be divided into kinds of fields, such as the football field, basketball field, outdoor stadium field, baseball field, tennis court, etc. And sometimes the fields will not have detailed usage, thus it needs a general standard to ensure the illumination of the sports field.

Competition Level			Calculate the orientation	Horizontal illumination			Vertical illuminance			light source
				Eh	Illumination uniformity		Ev	Illumination uniformity		CCT	CRI
				lx	U1	U2	lx	U1	U2	Top (K)	Ra
Non TVs	Ⅰ	Training and entertainment competition		75	0.3	0.5	–	–	–	>2000	>20
	Ⅱ	League competition		200	0.4	0.6	–	–	–	>4000	≥65
	Ⅲ	Professional competition		500	0.5	0.7	–	–	–	>4000	≥80
For TV Relay competition	Ⅳ	International level	Fixed camera				1000	0.4	0.6	>4000	≥80
	Ⅴ	National coherent broadcasting	Slow motion camera	–	–	–	1800	0.5	0.7	>5500	≥90
			Fixed camera	–	–	–	1600	0.5	0.7	>5500	≥90
			Mobile camera	–	–	–	1000	0.3	0.5	>5500	≥90
			Destination camera	–	–	–	2000

The limit rating of outdoor stadium directly glare

Standard value of lighting quality for sports buildings

Standard values of illuminance for sports buildings without color TV transmission

Export experiences and project qualification

Mecree has become an international brand of Led stadium lighting and light pole supporting. Its products are exported throughout the world.

There are many International projects Mecree supported, such as FIFA World Cup, South Africa International cricket Stadium, ASABA Stadium in Nigeria etc.

The construction of the stadium should be not only beautiful and comfortable, but also safe and reliable. Choosing the right sports lighting and providing professional light pole supporting services is a guarantee for entire stadium and the safety of football fans. If you want to get more professional information about led football stadium lights and high masts supporting services, please contact [email protected]

MECREE are committed to offer the right solution for every sport field including to football, baseball, cricket, hockey and professional stadium.