Arup London Lift Lobbies

The existing under-glass lighting consisted of outdated T5 fluorescent lamps, many of which had failed. The client requested an upgrade to an RGBW LED system to achieve clean, uniform illumination with complete control over the colour palette.  Colour options needed to match the recently refurbished Reception and foyer areas  which highlighted  the clients inclusive LGBTQ+ policies and practices.

RGB Lighting

The challenge was to illuminated the whole under glass space without creating light pooling on the frosted glass optic. Multiple visits were required to trial a range of materials and LED modules that could control the light distribution, creating a homogeneous, uniform visual as well as uplighting the existing architecture.

High quality colour saturation was very important. Commercial grade RGB LEDs were mounted into aluminium profiles with frosted diffusers to help under glass uniformity. 

High-quality white light was paramount for the general illumination of the space. To achieve this, independently driven white LEDs were installed to provide precise controllability and the perfect amount of light.

The lighting system features two primary components:

  • Under-glass lighting: Powered by a bespoke LED modules featuring dual-line optics for both RGB and white light.
  • Upper coffer lighting: Utilises the REGEN RESUS Linear LED modules, which were retrofitted directly into the existing fluorescent lamp holders.

    Overall, this upgrade delivers a remarkable improvement in both total light output and illumination uniformity.

    Evaluation

    After the primary consultation,  a variety of options were trailed on site to get the correct result.  Furukawa MC-PET Diffuse reflector materials were installed to provide better reflectivity and help reduce any light attenuation.  These were manufactured to exact dimensions to speed up the installation process. 

    Bespoke LED Modules

    Bespoke single & dual circuit LED Modules were manufactured in lengths up to 3000mm and fixed in situ by ultra strong neodymium magnets mounted to unique 3D printed support brackets. Electrical connections were all pluggable making for a seamless, fast installation. Remote high quality OSRAM multichannel drivers provided the LED power.  

    Project Performance Metrics

    • 200 Luminaires remanufactured
    • Energy Savings across the project
    • In-situ LED retrofit of T5 fluorescent to LED 
    • On site installation Light levels maintained or improved
    • Every retrofit gear tray tested and warranted