Animated Lighting Christmas in a box Spécifications télécharger pdf (Page 30)

Controlling LED Lighting30

Control system for large-scale

multi-dimensional façade

The Prada store in the Crystals retail and dining district

at CityCenter Las Vegas encompasses 23,000 square

feet of ready-to-wear, bags, accessories, and footwear

collections on three levels. Architect Roberto Baciocchi

was commissioned to design a stylish and dramatic façade

to complement the cutting-edge Prada brand.

The black aluminum façade, fashioned by Aliva UK,

measures over 4,300 square feet (400 m

). The façade

consists of over 200 luminaire panels, each containing up

to nine holes of various sizes. A semi-opaque polymer

cone is installed in each hole. A reflector is mounted in

the apex of each cone, a strand of eW Flex SLX white-

light LED nodes is mounted in a ring at the base of each

cone, and the mouth of each cone is covered with a

specially fabricated clear glass dome. The light from the

eW Flex SLX nodes shines through the opaque cones

and bounces off the reflectors to create unusual lighting

effects within each dome.

eW Flex SLX strands consist of multiple individually

controllable white-light LED nodes. Strands with varying

node counts of six, nine, 12, or 20 nodes, carefully

deployed across the irregularly shaped façade, produce a

subtle slanting effect and gradation of apparent size from

the shopper’s viewpoint upward toward the top edge of

the façade.

Rotating and other dynamic effects within each glass

dome, and coordinated effects across the façade, are

managed by a single Pharos LPC 30 Ethernet controller,

installed in a master control rack in the Prada offices on

the store’s top level. Additional equipment racks contain

Ethernet switches and 90 low-voltage power / data

supplies for powering and sending control data to the eW

Flex SLX strands.

Altogether, the installation consists of more than 22,000

individually controllable eW Flex SLX nodes, requiring the

creation of an extremely complex lighting design plan that

individually identifies each node. Philips lighting designers

and programmers used Pharos Designer, the software

component of the Pharos LPC controllers, to create a set

of stunning light-and-shadow effects that slowly change or

sweep across the façade throughout the day and night.

Prada, Las Vegas, Nevada, USA

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