At each corner of the stadium are four large masts that point skyward to a height of 96m. The prominent pillars play more than an aesthetic role, however: the masts support the main and back roofs and as a result no other pillars are needed. In other words, there are no obstructions and nothing to bother visitors' field of vision - no matter where they sit.
Early in 2005, the masts were enhanced with the use of Martin's Exterior series colour changing luminaires. Color projection is used to paint complementary colours to match the season, coordinate with nearby Toyota Bridge and as a general celebratory element for the World Exposition. Lighting was designed by Reiko Chikada Lighting Design Inc, with the Martin fixtures supplied through Martin Professional Japan.
Two 575W Exterior 600 fixtures with 12° lenses illuminate the top of each mast. Remarkably bright for such a long throw, the effective lighting distance was increased through the use of the narrow optical lens. Two Exterior 600s with 22-38° lenses light the main body of each mast and one Exterior 600 with a 22-38° lens lights the bottom section of the pillars, beneath the roof. In order to bathe a wider area evenly, they are programmed at 38°.
Two 150W Exterior 200 colour changing lights with 60° lenses light the bottom section of each mast and one Exterior 200 with a 60° lens lights above and below the roof. The 60° lens allows for a wide throw flood beam. Following the concept 'To Link the Whole Globe', the stadium turns a lovely emerald blue as the Toyota Bridge changes colour close by. The stadium, bridge and the city's main street all display a harmonious, congruous color pattern, while a variety of effects are programmed to match special events.
(Lee Baldock)
