Led Luminaries

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 ...

Gaggione has introduced a number of wall-washing lenses – intended to evenly illuminate walls and pictures from the top – for a variety of leds including, for the LLW59A, RGBW multi-die types. In each case, they are designed to be positioned pointing vertically downward, spaced away from the wall by one third of the height of the wall. For the ...

Cree LED has added higher efficiency high colour rendering index versions to its XHP35.2 leds, and introduced leds optimised to dim evenly when used in parallel The company has used its latest phosphor fill technology between the led die for improved optical performance. Optimised for indoor directional lighting, “Pro9 versions of the XHP35.2 HD and HI leds have up to ...

Cree is aiming at directional lighting applications such as spotlights, premium torches and sports lighting with the XP-G4 re-work of its XP-G series of leds, increasing energy in the beam while reducing side-spill, increasing maximum drive current, and reducing thermal resistance. Update: Lens-less ‘high-intensity’ variants were announced in January 2024 It is also harking back to now-unobtainable ‘pre-PCN’ XP-G2 leds ...

Signify has retrofitted the twin 4.5km bores of Dublin Port Tunnel with led lighting. “The upgraded lighting has achieved up to 60% reduction in electricity use, based on 2022 rates,” it said. “The project is expected to save upwards of €4m in electricity costs including VAT over the coming five years.” The existing fittings were re-used “saving an estimated €3m ...

After three years of development, the Nichia – Infineon micro-led-based light engine for matrix-style vehicle headlamps will be seen “in a German premium vehicle” this year, according to Infineon. Matrix headlights use projection optics to project an image of a rectangular array of light sources (in this case ‘micro-leds’) ahead of the vehicle, allowing any shape of headlight beam to ...