120 TECHNOLOGY / CASE STUDY PLAYING TO THE CROWD


Tashkent, the Uzbek capital, has seen a spate of public buildings constructed and a city-wide illumination concept has been launched to compliment them. Griven worked on the burgeoning city’s new stadium.


Bunyodkor Stadium was inaugurated at the end of August in time for Uzbekistan’s 21st Independence Day. The Uzbek capital city, Tashkent, has seen a great deal of investment recently and a newly conceived metropolitan illumination concept has been launched to accompany the new buildings. The Bunyodkor is the biggest sports facility in Uzbekistan and a well-framed lighting plan was required to overcome the many structural obstacles the arena posed. Supported by 64 columns, the three- dimensional sail-like canopies that embellish the building’s facade were identified as the lighting scheme’s ideal centrepiece.


Griven was chosen to provide the necessary lighting technology in conjunction with the Uzbek company FV Asia Denkriser and almost 500 LED fixtures were installed in order to achieve the desired result. The sails and columns were enhanced with cutting edge LED lighting fixtures, dimmable


and individually manageable via a wireless DMX control system. Lightweight, compact fittings capable of reproducing dynamic lighting patterns in perfect synchrony and displaying individual or combined colour sequences were also used. 64 Griven Dune MK2 LED colour changers, specifically designed for exterior recessed applications, were embedded at the base of each column to ensure they were illuminated up to the protruding canopies. Owing to their three-dimensional shape, the canopies needed to be lit differently in order to reach the required uniformity of tones and light output and the Zaphir RGBW was chosen for this purpose. Two units were positioned at the top and two at the base of each canopy, while one unit was located as backlighting behind each sail.


320 Zaphir RGBW colour changers were also added, its touchscreen display allowing direct access to all on-board functions. Moreover, the full digital control system,


accessible via any five-channel remote DMX512 control desk, includes stand alone functions implemented by pre-configured colour sequences and a master-slave mode for the synchronisation of multiple units. 32 Powershine S RGBWs were distributed all around the top edge of the stadium to illuminate its partial roofing and 64 DMX receivers and four DMX transmitters were specified to obtain an optimal wireless digital control. The wireless DMX signal transmitter units handle all 512 DMX channels with a maximum frequency of 250Kpbs and a typical outdoor transmission of 700m. www.griven.com


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