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Lumileds streetlight module matches lenses

Lumileds XR-TX

Lumileds is aiming at streetlights with a module which has 12 leds spaced to suit existing lens arrays. Luxeon XR-TX is 150 x 45mm and based on Luxeon TX leds – connected in a single series string. Forward voltage is a well-controlled 33-33.6V. Try as I might, I cannot find a list of approved “standard third party optics” as the firm ...

Vishay led module matches Ledil 2×2 lenses for street lighting

Vishay general lighting led module

Vishay has introduced a metal-core-based cool white LED power module producing 4,000 lm from 12 leds in series driven at 1A and dissipating 36W. Called VLSL12A03-3Q3T-50A, “to simplify designs and manufacturing processes it can be combined with off-the-shelf LEDiL quadruple lenses, while its integrated thermal sensor and four-fold plug-in connector eliminate the need for additional soldering”, said the firm. Sensor ...

Dc-dc led drivers are up to 96% efficient

Ideal Power dc-dc led driver

36KC24H and 36KC24W are step-down dc-dc current sources that operate from 5.5 to 48V and are up to 96% efficient, and can feed loads up to 25W. This means one driver can cover 12, 24 and 36V supplies. From Ideal Power, output current is 10mA- to 1A at 3.3 to 36V (providing input voltage is high enough). The company website also says ...

Tridonic programmes luminaires over the mains

Tridonic ready2mains programmer

Tridonic has a neat remote control scheme for luminairs called ready2mains which passes data around by snipping little bits out of the mains waveform near zero-crossing. Called ready2mains, it is neat because there is: no wireless link, no power-consuming RF modulation of the mains, no separate wiring, and only the tiniest momentary effect on the power supply. For ready2mains drivers ...

Sensible advice on LED strips from Lumileds

Lumileds has published an application note on its XF-3014 CV flexible led strips. I learned, for example, that the minimum bending radius for the strips is 50mm during handling, but that they can legitimately be bent around 90° corners (see photo) providing it is done once only, and not within 2mm of an led, plus some other caveats – check AB156 ...

Osram settles with Unity Opto

Osram and Taiwan’s Unity Opto have agreed to dismiss the pending patent litigation Osram had brought against Unity customer ASUS in Germany – Düsseldorf District Court had awarded Osram an injunction and found that ASUS had to compensate Osram’s damage caused by the patent infringement, and ASUS had appealed. Osram has granted Unity a royalty-bearing license to produce white LED packages under ...

Osram rebrands lighting business

Osram’s general lighting business to to be called Ledvance. ’nuff said… You would have thought… except… “Ledvance can also use the Osram and Sylvania brands”, said the company. Oh my word, half a re-brand. Actually, this is more of a business story: and business-wise, the lighting business will be separated by 1st April this year, while the legal separation is ...

Quad narrow beam optic from Ledil

Ledil Lucia

Lucia-S from Ledil is a four-up narrow spot optic intended for professional lighting – intended to provide “a very narrow light beam with good cut-off”, according to the firm. It is 90 x 90mm and 35mm tall. mounted by a single screw through the middle and aligned by a pin or pins on the sides. Described by Ledil as a ...

Texas town bans shoddy lighting, and offers clear guidance

City of Dripping Springs Shell

As someone whose pet hate is glare from thoughtless lighting, I take my hat off to the Texas city of Dripping Springs which has not only banned inappropriate lighting, but has taken the trouble to prepare clear easy-to-understand lighting advice for its citizens. “When people enter the City of Dripping Springs area at night, many of them notice something is ...

Collimators for UV leds

Ledil has designed a family of optics for domed UV leds. Called G2-Rose-UV, they are “UV-resistant with no notable decrease in light transmission rates”, said the firm. Made of silicone, they “can be used with UV LEDs, which even UV stabilised plastics are unfit for”. Typical applications of lenses range through polymer curing, bacteria sterilising, forensics and counterfeit detection. The ...