TECHNOLOGY / LED 109
LED lighting pioneer Pete Earle MSLL, Specification Manager at Philips Lighting looks at incorporating LEDs in luminaire design and what it means for future lighting schemes.
DESIGNING WITH DIGITAL, WHERE NEXT?
The cycle store, Velo Sport in London, uses Illuma Lighting’s Highlux 100 downlights fitted with LED module light sources that provide energy savings as well as a high quality of light.
The infant digital lighting technologies that I have been working with over the last decade are starting to grow up. It is no longer terrible toddler or unruly teenager technology, but polite young adult tech- nology with a serious view on the world. I am quite excited these days to see more and more innovation and to be involved in more and more adoption and specification of the latest LED solutions. We have major projects now being specified with LED light sources like Fortimo. It is not just the flag- ship projects but more significantly for me the day to day, bread and butter projects. However we have a long way to go until we reach majority adoption and penetration into the market with LED.
I have closely watched the white LED progress in the last ten years. LED white light has come on in leaps and bounds in the
last couple of years and I work with it on a daily basis these days. Fortimo LED Lines at around 135 lm/w are outperforming fluores- cents. White LEDs are rendering saturated colours like ceramic metal halide does. Colour consistency over lifetime is solved. Seeing is believing. There is now a range of manufacturers offering similar solutions. It will be interesting to see how the industry will adopt and use this light source that has become actually, errr, useful. Who is innovating with luminaire design and who is squeezing this new technology into old forms or just copying other designs?
MODULE APPROACH VS PEAK DESIGN Some fixture designs use modules, some use peak designs. A peak design is a design where the manufacturer designs his own LED boards using componentry – he will
source his own PCBs, source his own LED chips, source his own resistors, ICs and connectors and so forth. He will build his own LED board. This gives him total control over the LED solid state system and the design-in to his luminaire. This is great if he has the in-house resource and expertise to do this, but not all manufacturers do. The upside is he gets this total control to choose – the downside is that as soon as he has introduced his new LED luminaire into his catalogue, the technology is probably outdated.
An LED module is basically an LED chip package encased in a module body that allows it to be easily fixed into a luminaire. With less technical challenges than a peak design, the designer can reach production prototype stage and product launch more quickly. If the module supplier also sup-
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