Recently in Replacement lighting Category

LED generic.jpgLED Lighting guides

Here in one neat package is our collection of key LED lighting articles, covering white LEDs, coloured LEDs, OLEDs and Lighting LEDs...

* White LEDs

* Coloured LEDs

* LED Lighting (1)

* LED Lighting (2)

* LEDs General

* LED Optics

* OLEDs

* Costing LEDs

* LED heatsinking

* 50 year history of the LED

Luxeon MLumileds has announced Luxeon M, aimed at outdoor lighting, writes Steve Bush.

With an 8mm2 emission area producing 900 lm at 700mA (Tj=85°C Vf=12V) from its 8W package, application in high-bay lighting is also expected.

It will be released in three different colour temperatures: 3,000K,
4,000K, and 5,700K each with specified minimum colour rendering index (CRI) of 70.

Ismosys has released details of Sharp Microelectronics 50W LED module which is capable of replacing traditional 50W HID halogen lamps in the same performance class, writes Richard Wilson.

The 50W Mega Zeni features a luminous efficiency of between 3590 and 4770 lm, a light output of up to 100 lm/W in standard operating mode and a long service life of 40,000 hours at an operating temperature of up to 90°C.

"Compared to halogen lamps the 50W Mega Zeni LED array exhibits a much lower decrease in brightness over time and at 40,000 hours, a much longer overall service life," said Ismosys managing director, Nigel Watts.
Cree's multi-die MT-G LED is at the centre of this reference design which replaces 35-50W halogen MR16 bulbs, writes Steve Bush.

Available free from Cree's website, it includes contributions from Diodes, National Semiconductor and Texas Instruments (alternative electronics); Neng Tyi Precision Industries (heatsink); Carclo and Ledil (optics).

Demonstrated at EuroLED next to a 20W MR16, Electronics Weekly can confirm that a 7.5W variant is far brighter, has an even beam, and is just as white.

Poorly designed metrics hinder the development of efficient lighting technologies, writes Adrian Rawlinson, managing director of Marl International

Under the stricter requirements of Part L of the UK Building Regulations which came into effect in October 2010, lighting should produce at least 45lm/W measured at the circuit.

It is a measure that a well-designed solid-state LED lighting system can meet quite easily, but care needs to be taken to evaluate the light output of the system properly and this means having effective measures of the energy used and the useful light emitted. While the regulation lays down a clear approach to measuring the power used by a lighting system, there is, unfortunately, still no universally agreed standard method of measuring light output.

LED LightDon't miss the exhaustive look by our Technology Editor, Steve Bush, at the latest LED products hitting the market from Cree, Lumileds, Seoul Semiconductor, Osram, Nichia, and Sharp.

He begins:
All the major LED suppliers have released additional lighting-class LEDs over the past few months, particularly at the high-power end for light bulb and downlighter replacement.
chameleon LED.jpgHow do you encourage a fashion-conscious home owner to pay a lot for an LED alternative? This is the question asked by Technology Editor Steve Bush in a new in-depth LED feature on the site - Why anyone should switch to LED lights

Energy efficiency is good solid worthy way to encourage home owners to switch to away from incandescent bulbs, he begins.

But they might as well switch to compact fluorescent alternatives because they cost only a quid each.

And then some of them will take them out again and go back to their elicit stock of 100W bulbs because compact fluorescents really are dimmer and really do take ages to warm up.

So how do you encourage a fashion-conscious home owner to pay a lot for an LED alternative.

In January 2010 the ExCeL London management team started investigating how they could improve their lighting in order to achieve uniformity throughout the central boulevard of the exhibition and conference centre. At almost half a mile in length this is the main thoroughfare and public space used by all events. The solution that ExCeL chose for this critical space not only improved the light quality, but reduced operating and maintenance costs while also improving energy efficiency. By Christine Gupta, on behalf of Dialight.

LED Excel 1.jpg

ExCeL London's central boulevard lit by LED High Bays from Dialight

The lighting challenge

Engineering and Energy Manager, Chris Barnes explains how the need for improved lighting came about: "During the Phase Two expansion of ExCeL we used ETFE roofing above the new section of the central boulevard to allow us to harvest a lot of daylight. The Phase One section was still lit by 400W high pressure sodium lamps which produce variable colour rendering as they age, so it looked dark by comparison. We specifically wanted to improve the lighting so that visitors could flow through the two areas without noticing a big difference in lighting conditions. Lighting is a key part of the user experience of this building and, as we couldn't cut holes in the roof of the old section to let in daylight, it had to be an internal solution to matching the light quality."
 

Plug and play LED lighting from Molex and Bridgelux - Helieon

Bridgelux and Molex have teamed up to make a LED lighting product, branding it Helieon.

"The Helieon Sustainable Light Module combines solid state lighting technology from Bridgelux with interconnect technology from Molex, delivering to interior and exterior luminair manufacturers effortless installation, interchangeability and upgradeability," claimed Molex.

Aimed at luminair manufacturers, it is a separable source and socket system, allowing different LEDs to be plugged into a standard socket. 

Samsung LED tower for fridges.jpg
I went to a Samsung technology event the other day and I was surpised to see how many white goods were in their upcoming product lineup. Fridges, cookers, microwaves...

Why I am I mentioning this in an LED blog? Well, the company seems to be highlighting the place of LED lighting to differentiate products at the top of the respective ranges...

Check out our Editor's choice of 10 LED products that stand out for their specifications and efficiencies in this most active of design areas.

Cree LRP-38 is an LED with a colour rendering index (CRI) of 92, putting is among incandescents for colour quality.

"It generates a CRI of 92 at a colour temperature of 2,700K. The tightly-focused beam delivers a centre beam candlepower of 4,000 with a beam angle of 20 degrees," said Cree.

"This light is designed to replace 50-90W halogen PAR38 bulbs in various applications."

Osram LED 40W replacement bulb.jpgWe report today that Osram is producing what it claims is the first LED-based replacement for a 40W bulb.

Dubbed Parathom Classic, the bulb consumes 8W and produces 345 lm at a colour temperature of 3,000K. Lifetime is claimed to be 25.000h.

"This is the very first bulb shaped LED lamp which constitutes a true substitute for a 40W incandescent lamp," said Christian Schraft, head of consumer lighting at Osram.

LED Lighting guides

See also Electronics Weekly's roundup of content related to LEDs, with a special focus on both white LEDs and coloured LEDs, and Lighting LEDs.

* White LEDs

* Coloured LEDs

* LED Lighting (1)

* LED Lighting (2)

* LEDs General

* LED optics

* OLEDs

* Costing LEDs

* 50 year history of the LED








Recent Assets

  • Paul Ward Farnell.jpg
  • Photometric Optical Testing Services.jpg
  • LED generic 2 - 104 x 80.jpg
  • LED generic 2.jpg
  • OLED on foil from TNO-Holst Centre in Eindhoven.jpg
  • 8-bit_jack_o_lantern.gif
  • Audi A8 Ostar.jpg
  • led spanners.jpg
  • led spanners 0.jpg
  • led optics.jpg
OpenID accepted here Learn more about OpenID
Powered by Movable Type 4.37

Sponsored by Texas Instruments

This blog is brought to you in association with Texas Instruments.

Archives

Recent Comments

  • Alun Williams - Electronics Weekly.com on Wrap around Traffic Signals: That sounds believable - I guess it is one possible read more
  • Alun Williams - Electronics Weekly.com on Wrap around Traffic Signals: Maybe it is a slightly misleading headline - think pedestrian read more
  • John Henry Albert on Wrap around Traffic Signals: You could easily put a small heater into the design read more
  • LED Lights on Wrap around Traffic Signals: I like the idea of using existing poles and LED read more
  • Lighting Enthusiast on Wrap around Traffic Signals: This is an interesting design. I recently read somewhere that read more
  • Interior Ideas on An accent on LED sofa lighting: Really? What is the point of this. All your going read more
  • Dale of DesignerGoodies.com on Sleeved LED kit highlights computer cases: I honestly don't understand why people chav up the computers read more
  • Janice on Super-bright LED Bazooka: Well, that sounds like a lot of light - probably read more
  • Rafael Gomez on LED Life Expectancy: how long is the usual life span of a good read more
  • Alun Williams - Electronics Weekly.com on LED display comes to Vodka bottles: And did you try setting the LED lights, John? read more

Author Profiles

Paul Ward
As Opto Product Manager at Farnell, Paul is overseeing the company's involvement in the rapidly evolving and high profile LED lighting market sector.

As well as ensuring that Farnell offers the latest technologies and products related to solid state lighting, Paul is also responsible for ensuring that the resources are in place to make it easier for design engineers to specify and design-in LED solutions for their applications.

Educated in Production Engineering and Design at Sheffield Hallam University, Paul has worked in various engineering, training and marketing roles for companies including C&K switches, ITT Cannon, Cherry and LED specialist Chicago Miniature Lighting.

Away from the world of LEDs, Paul is a Founder of the charity RTTW, Photographer and Harley Davidson rider; he has ridden and snapped across Europe, New Zealand and the USA on his chrome hog!

Gordon Routledge
Gordon Routledge is one of the original pioneers in LED illumination having worked with LEDs in illumination applications since 1996. Currently VP of Illumination at Dialight, Gordon founded Lumidrives in 2001, having previously been managing director at ACDC Lighting Systems. Gordon has a degree in Electrical & Electronic Engineering from university of Manchester Institute of Science and Technology.

Ian Bryant
ian bryant.jpgIan Bryant is Business Development Manager LED Division at Carclo Technical Plastics. He has worked on and off at Carclo (Formerly Combined Optical Industrial) since leaving school. He has worked through the company from Toolmaking to starting the company on the road of LED optics business some 6-7 years ago, starting with a standard range and more in line with the business of custom optics. In between all this he has worked in engineering and as a works Director for a hydraulics company but kept getting pulled back to the optics industrial. We are able to offer the full solution from idea to parts so have a very good understanding on what is needed. You will see some posts from our design team also under my name.

About this Archive

This page is an archive of recent entries in the Replacement lighting category.

Power is the previous category.

Research is the next category.

Find recent content on the main index or look in the archives to find all content.