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TECHNOLOGY / LIGHTFAIR INTERNATIONAL, PHILADELPHIA, USA
Our product reviewer David Morgan is pleasantly surprised by what was on offer at this year’s Lightfair International in Philadelphia.
PHILADELPHIA FLYERS
This year’s Lightfair held in Philadelphia was larger and busier than I expected. Although some traditional lighting manufacturers de- cided not to exhibit this year they were re- placed by a variety of consumer electronic and LED companies including Samsung and LG. It would appear that the light source market may have a rather different set of brands in the near future if these compa- nies are successful in their approach.
a
PHILIPS WIDELITE Tucked away in the enormous Philips
North America Village, that gave the im- pression of taking up a quarter of the whole show but had large - almost empty - spaces, the WideLite division was showing a rather elegantly designed, traditional HID range of exterior projectors called DecoFlood HID floodlighting series DFS. A full range of wet location HID exterior projectors without a single LED in the range – how surprising and refreshing! With three sizes of round and two sizes of square luminaires the range includes a wide variety of accessories, mounting options and beam angles includ- ing a gobo projector version of the larger round size. The range is designed to oper- ate Cosmopolis lamps up to 140 watts and MasterColor Elite lamps up to 315 watts - all with electronic ballasts.
www.usa.lighting.philips.com
b
BRIDGELUX Bridgelux showed its new Helieon line
voltage LED module developed in conjunc- tion with Molex. This system incorporates a twist and lock socket into which the LED module fits, providing electrical connec- tions and a well engineered mechanism to ensure good thermal contact with the heat sink while allowing easy and tool-less replacement. The module includes a Triac dimmable line voltage driver, a Bridgelux LED array and a reflector from Ledil. The module provides 1,700 lumens with a colour temperature of 3000K when the array is running at 60°C and consumes 32 watts with a system efficiency of 52 lumens per watt. Bridgelux was one of the first LED companies to integrate its arrays in an easy
to use module format. Now that almost all LED emitter suppliers are offering modules, Bridgelux has gone to the next stage by integrating a line voltage driver that can be dimmed with a standard wall dimmer. However, other line voltage modules such as the Infusion from GE are being launched at the same time so it will be interesting to see how this segment of the market develops. It seems as though a standard base design needs to be agreed soon so that modules from different manufacturers can be interchanged. The Zhaga Consortium is charged with working on creating standards for LED modules, but apparently the market can’t wait for them to agree.
www.bridgelux.com
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LUMINUS DEVICES Luminus, which specialises in much
larger die sizes than other LED emitter manufacturers, has also jumped onto the module bandwagon with a more basic mechanical approach than Molex but with higher light output than the Helieon. Working with T Opto they have created the Sololux module built around the Luminus quad die CSM 360 package that provides up to 2,500 lumens in warm white at 70 lumens per watt with a remote driver. Luminus also introduced a miniature new quad die package, the SSM 80 which runs at higher voltage and lower current than the earlier Luminus arrays and provides up to 1,600 lumens in warm white at 64 lumens per watt. For image forming and very narrow beam projectors this could be an extremely useful device.
www.luminus.com
d
LITHONIA Lithonia followed last year’s OLED
concept presentation with two new ceiling mounted OLED ranges, Revel and Kindred, that are understood to be commercially available in the future. Kindred is a large-scale amorphous shaped pendant with 45 OLED panels providing 3,000 Lumens at 53 lumens per watt. The Revel is a minimal and quite attrac- tive surface mounted luminaire with five
four inch 6.5 watt 85 CRI OLED panels. It is designed to be used singly or in groups for interior area lighting. At the recent OLED summit in London the Lithonia OLED design guru Peter Ngai described how the Revel could be used to provide light precisely where needed in an office lighting applica- tion which would therefore make it a cost effective lighting solution. Peter Ngai is a keen advocate of OLEDs and feels that the light from these panels has a more noble and emotional quality than other LED sources. Using the Revel for office lighting seems a fairly far fetched scenario at the moment given the high cost, low efficiency and low power of OLED panels. However, the Revel does seem to be the closest idea I have seen yet to a usable mainstream luminaire based on OLED panels. Somewhat surprisingly the Revel won the most innova- tive product of the year award at the show.
www.lithonia.com
e
LUXIM Luxim, one of the pioneers in point
source plasma lighting, showed its latest light sources and a much larger variety of fixtures developed by luminaire manufac- tures than at last year’s show. While this technology is slowly finding its way into the market in niche areas such as image forming, entertainment lighting and street lighting, so far none of the major lighting manufacturers seem to have adopted it. The general obsession with using LED for every type of lighting combined with the high performance to cost ratio of traditional technology HID lamps, including the Cos- mopolis, seems to be limiting the market for plasma at the present. The high colour temperature of 5,300K, shortish lamp life of 17,000 hours and efficiency of only 62 lumens per watt combined with a high capi- tal cost are hard to get excited about. But it may well be that this type of light source could play an important role in high output luminaires (400 watt HID and above) where a point source is needed for good optical control. LEDs will have nothing to offer in this market segment for the foreseeable future.
www.luxim.com
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