LED Lighting News

Plessey retrofitting with its own lighting LEDs

Plessey is retrofitting its Plymouth manufacturing facility with LEDs and lighting modules made on-site. It will replace fluorescent tubes and compact fluorescent bulbs in existing fixtures – approximately 2,700 fixtures replacing 4,200 fluorescent lamps – for which it has designed retrofit kits. “LED retrofit kits offer the facilities engineers…

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LED street lights need better lightning protection, says Osram

The introduction of LED street lighting has raised a new problem. How can the electronic drivers be protected from voltage peaks from lightning strikes. The problem with LED lighting modules is that they operate at lower voltage levels and could be damaged from overvoltage. According to LED supplier Osram, this…

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Plessey selling GaN-on-Si LED die

Today Plessey announced the release of its range of GaN-on-Si MaGIC LED die. The blue die, sometimes referred to as blue pump for their ability to pump phosphor to a white colour range, are the latest innovation in high brightness LED die designed for a wide range of…

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Plessey goes into LED light bulb 'filament' production

 Plessey has launched a range of LED ‘filaments’ based on GaN-on-Si die made in Plymouth. “The filaments are designed for the surging filament bulb market where these replacement lamps have far better performance, but maintain the physical appearance of incandescent lamps,” said the firm. Called the PLF series…

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Plessey expands wearable LED line

Plessey has expanded its dotLED range, designed for wearable LED tech, by adding a wider selection of colours, including red, green and blue. “Our dotLED product range addresses the optical, mechanical and cost requirements for the typical wearable applications. These include wristbands trackers for health and fitness as well as…

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Narrow beam angles from small LED packages

Following research at Sheffield-based LED packaging firm Litecool, narrow beam angles from LED packages without secondary optics or reflectors look closer. The proof-of-concept device produced a beam with 50% of light in 36 degrees, and over 90% efficiency. “Most package manufacturers design their LED packages for maximum…

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Standard release for lighting LED-driver interface

The Module-Driver Interface Special Interest Group (MD-SIG) has released its specification for a universal electrical interface between LED lighting modules and their power supplies. The standard has the support of Osram, Panasonic, Philips and Tridonic. Called LEDset1 edition1.0, it is a three wire interface (see diagram): power…

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Cree squeezes 13W LED into XPH35 3.5x3.5mm package

Cree has added 50% more light output to its 3.5×3.5mm ‘XP’ format with the introduction of the four-junction XPH35 series. Something like 1,800 lm is available with the device turned up to its absolute maximum of 1.05A, when it typically drops something over 12.3V…

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