Lighting : Lighting April 2014 - Vol 34 Issue 2
22 LIGHTING MAGAZINE | April/May 2014 April/May 2014 | LIGHTING MAGAZINE 23 Minimising glare is a key consideration of any successful sports lighting design. Glare can make it impossible for spectators to follow the game, for players to undertake basic actions in the context of a match (think poorly aimed lights that shine into a player’s eyes when they look up to take a catch) and for sporting officials to make accurate refereeing decisions. In some instances, glare can also be a safety issue, such as in a pool environment where light reflecting off the water may make it impossible for lifeguards or officials to see someone in trouble underneath the surface. There are a multitude of techniques that designers can use to minimise glare. Positioning and aiming of the lights is crucial, as is accurate control of the light based on the width of the beam. “If we have very narrow beams or very wide beams, the aiming delivers completely different results in terms of glare. For example, if you’ve got a very steep aiming angle, you can make sure that there’s no glare to your players or spectators by using a narrow beam floodlight,” Lewis says. Mounting heights create another challenge. The lower the light fittings, the closer they sit to the field of play, which creates greater potential for glare and hot spot issues. This is a particular problem for indoor sporting venues, where lighting designers are often brought on board after the venue has been constructed and the roof height already set. “Possibly the most challenging part of indoor sports is not having much height to work with,” Greenup says. Suitably selected luminaire types and aiming provide the right lighting for athletes and spectators at the Vancouver 2010 Olympic Games. photo courtesy of david lewis. Low mounting heights can create challenging glare control issues. photo courtesy of david lewis. Incorrect aiming of sports lighting fixtures creates potential glare for player and broadcaster. photo courtesy of david lewis. If we have very narrow beams or very wide beams, the aiming delivers completely different results in terms of glare.
February 2014 Lighting (v2-HR)
Lighting June 2014 - Vol 34 Issue 3