CASE STUDY | LDN-W OFFICES Dark verticals in the foyer help the eye adjust when people step inside from the daylight Suspended LED feature pendants give direct lighting to the bar and create a visual focal point for customers. Floor-standing LED feature lighting provides low-level lighting to the cafe seating area for a more relaxed and informal ambience. Continuous, direct, diffuse LED lines of light run around the entire perimeter of the lift lobby and circulation space. Luminaires black, expanded mesh ceiling. Adjacent to the lift doors, deep-recessed LED system, produce pools of accent light on Timing occupants as they entered the foyer was essential to the success of the scheme. At the height of summer, occupants can step quickly into the building from daylight levels of 20,000 lux or more, potentially posing a problem for adjusting their eyes as they enter an interior with such However, the intentionally dark verticals speed the eyes adjustment to the lower interior levels. Once the occupant is in the interior space, the light is concentrated on the eyes focus to the lower light level, a process that can take up to two minutes. As the vertical black walls facing the daylight Clients and users have responded quite dramatically to schemes where we have used darkness as an energy-saving device to meet carbon zero or exemplar targets white walls, it is the pale walls away from the daylight that alleviate the transition. In other words, we are using a staged luminance transition to keep the eye comfortable as it adjusts over that two minutes. The balancing of contrast and focus continues through each landlord space, into the toilet suites. to bring good facial modelling to mirror recessed line of LED light with opal diffuser, providing a soft lit effect, while indirect LED cove lighting detail gives vertical illumination above the mirror. In all places, we understood the occupants eyes and direction of view, such that the lighting is as much about the balance and placing of black or pale to light levels. CJ COLIN BALL is lighting director at BDP 40 December 2021 www.cibsejournal.com CIBSE Dec21 pp38-40 LDN-W offices Supp.indd 40 26/11/2021 14:55