November 2009 Archives

Osram goes OLED with warm white Orbeos lighting

By Alun Williams - Electronics Weekly.com on November 27, 2009 11:51 AM | No Comments | No TrackBacks
osram oled.JPGOsram has introduced the first OLED lighting product. Called Orbeos, the warm white area emitter is 80mm diameter, 2.1mm thick and weighs 24g, writes our Technology Editor, Steve Bush.

Colour temperature is 2,800k and colour rendering index is "up to 80", said the firm. Efficiency is 25 lm/W, which puts it well behind LED lighting, fluorescent tubes and compact fluorescent lamps, but ahead of light bulbs and halogen lights.

Continue reading Osram goes OLED with warm white Orbeos lighting.

Solar Vision Pole lamp post highlights LED lighting

By Alun Williams - Electronics Weekly.com on November 26, 2009 11:40 AM | No Comments | No TrackBacks
Margery Conner, Technical Editor of EDN, has wrriten an interesting article about off-grid street lighting, which involves white LEDs.

Despite the efficacy of HB LEDs, she notes, their cost is such that they can struggle to compete head-on with older forms of lighting. However, certain apps can justify the paying of a premium in return for high efficiency...

She writes:
Continue reading Solar Vision Pole lamp post highlights LED lighting.

White LED backlit flat-panel LCD TVs prosper

By Alun Williams - Electronics Weekly.com on November 20, 2009 11:21 AM | No Comments | No TrackBacks
LED backlight.jpgCheck out another LED-related feature article uploaded to the site: LEDs light up LCD TVs

Written by Tony Armstrong, director of product marketing for power products at Linear Technology, he considers how sales of LED backlit flat-panel liquid crystal display TVs are proving positive, despite the economic downturn.

He begins:
To understand the driving force for white LED backlit flat-panel LCD TVs, it is important to have some idea as to why they should be used over other forms of lighting, such as cold cathode florescent lamps (CCFL).
Continue reading White LED backlit flat-panel LCD TVs prosper.

Anti-fuse secures chains of LEDs

By Alun Williams - Electronics Weekly.com on November 20, 2009 11:04 AM | 1 Comment | No TrackBacks
25nov09MurataAntiFuse2.jpg
Murata has developed a surface-mount anti-fuse to prevent long chains of LEDs from extinguishing if one device goes open circuit, writes Technology Editor, Steve Bush.

The idea is that anti-fuses are connected across LEDs in the string, one per LED. When an LED fails, the voltage across its anti-fuse partner increases rapidly.

Continue reading Anti-fuse secures chains of LEDs.

More Lumiblade OLED photos

By Alun Williams - Electronics Weekly.com on November 18, 2009 3:07 PM | No Comments | No TrackBacks
2 Interactive OLED lighting detail 100.jpgWe highlighted Philips' promotion of Lumiblade OLED technology recently. And it was such a rich seam of material we have created a new picture gallery devoted to the subject....

Take a more detailed look at Philips Lumiblade OLED lighting technology.

We take a peek at some of the uses of the flexible, low heat-emitting OLED technology in the form of chandeliers, desktop lamps, video art installations, and a comparison with fluorescent lighting...

View the OLED lighting prototypes

View all the available photo galleries

Robotic plant has LED flowers

By Alun Williams - Electronics Weekly.com on November 11, 2009 11:59 AM | No Comments | No TrackBacks


A bit of fun. This is what a robotic plant looks like, with (white and infrared) LEDs in the flower.

It's name is Himawari (Japanese for sunflower) and its design has apparently been influenced by the motion pattern of sunflowers, with it reacting to human movements. The stalk is driven by servo motors and there are alloy actuators in the head, but it is the reflected light from the white LED tentacles - and infrared LEDs which are used to reflect IR light - that enables movement to be tracked.
Continue reading Robotic plant has LED flowers.

Cool Philips Lumiblade OLED lighting prototypes

By Alun Williams - Electronics Weekly.com on November 6, 2009 8:03 AM | No Comments | No TrackBacks
OLED noose bulbs.jpg
Is it just me or do these OLED 'pretend filament bulbs' look like nooses?

This one caught my eye over the weekend, in a blog post highlighting the flexibility of OLEDs - because there is no point-source of light they are more amenable to specialised shapes.

philips oled prototype.jpgTechnabob flags that Philips has made some interesting prototype fixtures using their new Lumiblade OLED technology.

Check them out, some are very cool. I lke the OLED rocking chair-n-light.

LED driver lifetimes go beyond 7,000 hours, claims NXP

By Alun Williams - Electronics Weekly.com on November 5, 2009 1:12 PM | No Comments | No TrackBacks
NXP Semiconductors says that its LED driver ICs can match the lifetime figures of the LEDs themselves, writes our editor Richard Wilson.

The chipmaker has carried out accelerated lifetime tests on its SSL2101 range of LED drivers.

With LED lighting offering the potential to be ten times more efficient than incandescents, manufacturers are commonly reporting lifetime figures exceeding 50,000 hours. As a result the issue of reliability shifts to the associated devices particularly the LED driver.
Continue reading LED driver lifetimes go beyond 7,000 hours, claims NXP.

Most read LED Luminaries posts in October

By Alun Williams - Electronics Weekly.com on November 4, 2009 4:56 PM | No Comments | No TrackBacks
mitsubishi 155in oled display.jpgHere is a quick list of the most popular LED Luminaries posts in October. Check out what your peers are reading.

Popular posts include street lighting, OLED displays, why LEDs can not rival halogens, and LED PSUs...

In reverse order:


10. 1W of infra red light from an LED

9. Linear LED driver powers 20A constant current

8. Power supply makers target LED PSUs

Continue reading Most read LED Luminaries posts in October.

Using iPhone app to dim the LED lights

By Alun Williams - Electronics Weekly.com on November 3, 2009 3:13 PM | No Comments | No TrackBacks
iPhone dim LED lights.JPG
Check out a newly-uploaded in-depth article on LED lighting. It covers how to use an iPhone app to control and dim your home LED lighting. See Using iPhone app to dim the LED lights

To be more precise, it describes the development of a two-wire home LED lighting control system as a reference design to help explore opportunities for using control technology to make designs more sustainable.

The article begins:
Continue reading Using iPhone app to dim the LED lights.

Enfis and Cooper Lighting put 208,800 LED lights into Abu Dhabi

By Alun Williams - Electronics Weekly.com on November 2, 2009 11:17 AM | No Comments | No TrackBacks
11nov09Enfis 168.JPGCheck out this 208,800 LED lighting scheme in Abu Dhabi, which comes courtesy of Enfis in Swansea and Cooper Lighting of Leamington Spa.

The lights are said to offer a 4.2 billion colour palette, with two-way communication providing real-time monitoring of fixture temperature, colour and energy consumption, as well as DMX remote control.
 
Continue reading Enfis and Cooper Lighting put 208,800 LED lights into Abu Dhabi.
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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.

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About this Archive

This page is an archive of entries from November 2009 listed from newest to oldest.

October 2009 is the previous archive.

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