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106 TECHNOLOGY / BENCH TEST


One of the stars of The ARC Show @ May Design Series, KKDC’s innovative products have been a hit with specifiers and consultants on major projects all over the world. David Morgan took a closer look at one of their new releases - the SIL window reveal light.


SIL REVEALED


In the space of a decade, KKDC has emerged from relative obscurity to become a significant player in the global architec- tural lighting market. It originally devel- oped its reputation by producing linear LED tape-based lighting systems that offered high colour consistency, high CRI and a wide range of colour temperatures earlier than its better-known rivals. As it has grown, KKDC has created a strong brand identity and worked with high-profile architects on many projects, including the House of Stone in Milan with John Pawson and Salvatori. In 2011, KKDC managing director Tom Fairhall spoke of entering a ‘hyper growth’ period and, in the space of a few years, his organ- isation set up offices in the UK, Australia, New Zealand, France, China and Japan – not bad for a firm that began life as an OEM, producing products for Samsung. KKDC’s SIL light is a recently-introduced lu- minaire, specifically designed to illuminate window reveals. This niche lighting appli-


cation, so popular with lighting designers, has already been tackled in recent years by other companies including Sill and Meyer. However, the KKDC product is smaller – in- corporating a single 3 watt LED – and neater than these earlier products and gives the impression of being targeted at residential rather than architectural projects given its quite low light output and low efficiency. In comparison, the Sill 190 luminaire incor- porates 9 x 2 watt LEDs, while the more recently introduced Meyer Arclight has 2 x 3 watt LEDs. In its general appearance, the KKDC SIL is attractive with well-finished surfaces and integrated branding details. The satin anodised end caps and matt black body give a good impression of well-considered lumi- naire design. The product design was by Tim Young, Design Manager, based in the KKDC UK office while production mechanical de- sign and the PCB/Electronics design was by Minkoo Park and Sanghun Jung respectively,


both based in Korea. The LED source is a single Cree XT-e run at 700 mA, fitted with what looks like a Ledil Flare series lens. This lens pro- duces a 180-degree arc of light from a single LED source and is very well suited for this application. The light output is a very narrow blade of light with roughly 180-degree distribution. The effect, when used in a typical domestic window reveal, is attractive and the SIL illuminates the window reveal quite evenly without much spill light. There seems to be a bit of a glare issue when viewed from within the build- ing. Although the lens collimates the light output effectively, it has a frosted central element that acts as a glare source and, under certain circumstances; this could be irritating when looking out of the building. There is no mention of any add on anti-glare or anti-bird roosting accessories. At the mo- ment only white light versions are available but possible fixed colour or colour changing


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