CS123 Invisua Case Study 20160609 ©2016 Lumileds Holding B.V. All rights reserved.

2

The Masterspot 2 spotlights are ideally suited to this project

due to their ability to produce high luminous intensity of

35,000 candelas (3200+ lumens) with outstanding color

rendering (CRI = 95, R9>90) and an adjustable beam

angle of 12-24°. Invisua uses white, red, green and blue

LUXEON Z High Power LEDs from Lumileds because they

deliver exceptional color consistency, high flux density as well

as superior beam angles due to the very small emitter size.

The emitters produce every color from all shades of white

light along the blackbody locus to the most saturated RGB

colors. Using between four and eight spotlights per window,

some Masterspot 2 spotlights are dedicated to tunable white

light while others provide colored, dynamic light as required

by the light show.

Results and Benefits

Selfridges window displays have a lot of action taking place in

a small space of only 5 x 2.5 meters, so the ability to adjust

beam angle of the spotlights is important and it is a feature

not commonly offered on competing products. In this small

space, there may be dozens of people working to assemble

the window displays at once. Having a lighting system in place

that will not change with each display installation greatly

simplifies the overall process.

The intuitive web app allows for quick and easy setup and

light scene design. A light scene previewer allows planning

and comparison of scenes. Feedback from viewers of the new

dynamic lighting approach has been overwhelmingly positive.

People see the dynamic lighting as portraying a more modern

aesthetic. With dynamic lighting, the spotlights can also be

programmed to tell the story of what is taking place in the

window, to match the scenery outside the windows, or to

switch between the two. Dynamic lighting gives the creative

team at Selfridges a creative “knob” that they did not have

with static lighting.

“The window displays and lighting

typically are changed every three

months. But now with a flexible LED

lighting system capable of dynamic

lighting effects and wireless control,

only the lighting programs change,

which greatly simplifies matters..“

— Matthijs Keuper, CEO and Founder

Invisua Lighting