Tag Archives: led lighting

Diodes has introduced a 12-channel constant-current LED driver arranged as four channels of RGB. AL58221 has open-drain outputs that can sink up to 60mA and withstand 24V. Maximum red green and blue currents are set with three resistors, then the individual channels are digitally-modulated to set their brightness. To reduce flicker, adaptive pulse density modulation is used, with diodes claiming ...

Cree LED has up-graded its 1.6 x 2.05mm lens-less XE-G led family, claiming a 20% increase in efficiency for RGBW systems, and a 10% or higher efficiency gain for 13 of the 18 available colors. These devices are intended to be packed closely under colour-mixing optical systems. As such, the gap between emissive surface and package edge is kept small ...

Cree LED is aiming at portable lighting with a 16,500 lumen multi-die LED in a 10 x 10mm package with a 9mm primary lens (right). Called XFL10K, it has two cousins: the 14,247 lm XFL08K which comes in the same package, but with an 8.5mm lens, and the 7 x 7mm 8,335 lm XFL05K with a 6mm lens. These are ...

Contractors picked Luceco luminaires on behalf of Bolton Arena Sports Village to upgrade the 15-year-old lighting in its giant Tennis Halls. “This presented us with a great opportunity to both look for an energy-saving solution as well as an upgrade to the quality of the lighting,” said Bolton Arena operations manager Simon Sharrock. Out went fluorescent lighting and in came ...

Cree has been experimenting with tuneable white luminaires, and has published its findings in a couple of useful application notes. XLamp XD16 premium white color-tunable LED arrays reference design 3-channel white tunable 1000 lm 4” downlight reference design One conclusion in both cases is that three-channel colour mixing achieves a wider colour temperature range for any given maximum deviation below ...

Luceco has provided led luminaires for London’s Lee Valley Ice Centre – the skating venue for this seasons Dancing on Ice masterclass with Torvill and Dean. Heading the list of luminaires installed is  the dimmable Callisto, a linear surface-mounted unit intended to provide 100,000 hours of maintenance free operation and 135 lm/W efficacy, with variants outputting between 11,000 and 32,000 lm. ...

Cree has released preliminary data on the lens-less ‘high intensity’ (HI) variant of its recently introduced XPG-4 leds (3A 10W 3.3 x 3.3mm). “A first in the XPG series, this version promises unparalleled candela and throw for the most demanding lighting needs,” according to component distributor Cutter Electronics, which will be stocking the parts – and pointed out that the ...

Glamox of Norway is to provide LED lighting for 176 wind turbines in the Coastal Virginia Offshore Wind (CVOW) project, which will be the largest offshore wind farm in the US. 2,850 of its MIR G2 WOF water-tight stainless-steel linear LED luminaires will be fitted to the exterior and interior of the wind turbine transition pieces – the part that ...

“Car headlights should be better regulated to reduce the dazzle they cause on-coming drivers”, according to a report produced by Scottish charity Lightaware. Called ‘Modern vehicle headlights dazzle drivers and may compromise road safety’, it highlights the extra-sharp sharp angular transition between the brightest part and the dim ‘cut-off’ of dipped headlight beams made possible by technologies such as LED ...

LEDlenser has created a range of LED work torches for peering into electrical cabinets, amongst other applications. “Depending on the job at hand, professionals expect different things from their work lights: selectable colour temperature and higher colour rendering indices help electrical contractors test cables, the automotive mechatronics sector needs lamps with plane heads to light up hard-to-reach places,” according to ...