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catalogues of the major manufacturers. ‘Whether the time is right yet to jump ship from traditional sources depends both on who you speak to and what the application is.’ Speirs and Major’s primary concerns


relate to white rather than coloured light. ‘It is still difficult to obtain white light of a consistent appearance from different fittings. Also, if a fitting is damaged a few years after


installation, many manufacturers have no strategy in place to ensure a fitting of


matching colour appearance and light output can be supplied. In less sensitive applications, such as street lighting, these issues are less important but in high-end interiors they make it very hard for us as specifiers to recommend LEDs as an appropriate solution yet,’ says Howis. He recognises that companies like Xicato and PhotonStar are starting to address these challenges and as others join them, LED lighting will truly be mainstream. Presently, the Xicato Spot Module is chosen by Flos, Ansorg, Regent Lighting and Troll in Europe and Bruck Lighting, DaSal, Duraguard and Lighting Services Inc, in the US, for their luminaires. Normally the 'against' arguments centre on LED technology theoretically being applicable to general lighting in terms of longevity and energy saving, but having shortcomings in terms of light quality, particularly CRI, colour point stability and homogeneity. With these shortcomings in mind, Xicato developed a unique 'corrected cold phosphor technology' where the total light quality, quantity, efficacy and longevity specifications


were all considered and a best combination achieved. Wide uptake has occurred, for example in museums and galleries and other areas where light quality is paramount, which Roger Sexton of Xicato feels is an indicator that LED lighting has come of age. Ian Cathcart, nationsal sales man- anger - SLL at OSRAM, says we are starting to see the LED market take off as more effi- cient LED products become available that can be used as real alternatives to tradi- tional light sources. ‘Lighting schemes of the


future will be primarily judged


according to their energy efficiency and oerformance as well as their modern design and ease of installation. LED solutions meet all of these requirements. OSRAM’s LEDVANCE downlights are a prime example of how LED technology has improved. They can be used in place of traditional lamps to reap savings without compromising on style.


Above: Xicato Spot Module. Top right: Philips’ new range of LivingColors coloured and white light luminaires, and the MASTER LED lamp that is equivalent to a 60W lamp. Below: GE Lighting’s Infusion, and GU10 LED lamp.


‘Navigating through all the hype and manufacturers' claims can be a difficult and daunting task so lighting designers need to apply caution.’ Mike Barratt, commercial director UK & Nordic at GE Lighting


20 www.a1lightingmagazine.com


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