LED at 50: An illuminating history by the light’s inventor

The light-emitting diode has brightened our lives for half a century – from lighting up the city streets at night, to decorating Christmas trees each December.

The LED started life in October 1962, as a single red illumination in a General Electric research lab in New York state.

Now – as one of the world’s biggest retailers, Ikea, announces that by 2016 the only lighting products it will sell will be LED-based ones – Prof Nick Holonyak Jr from the University of Illinois, takes a look back at how it all began with his invention of the first practical visible-spectrum light-emitting diode.




Ikea to sell only LED lighting

LIGHTING THE WAY: Swedish retailer Ikea plans to sell only energy-efficient LED lighting by 2016, a move it announced two years after it said it was phasing out incandescent bulbs.

WALKING THE WALK: The company will also install the longer-lasting bulbs in its stores, helping it save about $10 million to $20 million a year, or 10 percent, in lighting costs at its 300 locations worldwide.

ELSEWHERE: Ikea hopes to set an environmentally friendly example, but other large retailers said that, while they are experimenting with shifting to LED lighting in stores, they are still selling all types of bulbs for now.

© 2012 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.

Baja Sol Restaurants Group to retrofit 7 more stores into LED

Baja Sol has chosen Solus LED to retrofit 7 more of their stores into LED lighting after experiencing continued monthly savings for their test store (St. Louis Park) over a 4 month period.  The impact of retrofitting over to LED has not only given the restaurant monthly energy savings, but also a zero maintenance cost solution and improved lighting ambiance.    Baja’s savings have been slightly higher than what Solus originally projected and modeled for their test store.   Great news for Baja Sol Restaurants Group.


What is #2 on the list, you ask? 


Article references Memorial Sloan-Kettering Cancer Center which was retrofitted with Seesmart product.



CFL bulbs: shedding light on misleading performance claims

A wiser choice is to skip a technology and replace incandescent bulbs with LED.  The fact is there is no good reason for consumers – even energy-conscious go-green enthusiasts – to replace their old incandescent bulbs with the much-overhyped and potentially dangerous CFL lamps.

Improving the In-Store Customer Experience in a Way You’d Never Expect

Lighting is an important part of a store — it influences a shopper’s mood,
their perception of the quality of the product and has the ability to highlight
specific products (or product features) in a flattering way.

Long lead times hamper SSL sales and broader deployment

LED lighting manufacturers can minimize supply chain issues by focusing on supplier fulfillment, selecting sources, and service standards

LEDs Winning Light Race

Today’s light-emitting diode light bulbs have an environmental edge over compact fluorescent lamps. And that gap is expected to grow significantly as technology and manufacturing methods improve in the next five years, according to a new report from the Department of Energy’s Pacific Northwest National Laboratory and UK-based N14 Energy Limited.
“The light-emitting diode lamp is a rapidly evolving technology that, while already energy efficient, will become even more so in just a few short years,” said Marc Ledbetter, who manages PNNL’s solid-state lighting testing, analysis and deployment efforts. “Our comprehensive analysis indicates technological advancements in the near future will help people who use these lamps to keep shrinking their environmental footprints.”

LED Myths

Here are 3 LED myths everyone should know…


Myth 1   LED bulb watts equal to incandescent bulb watts

Truth: Incandescent bulbs usually stress watts instead of lumens thus consumers’ buying habits have been affected as time passes. Unlike incandescent bulbs, since LED luminous efficacy is still growing, watt does not represent its lumen. Some manufacturers put labels on their product packages such as “40W incandescent replacement bulbs” to help consumers to make the purchase decision.

Myth 2   The higher power, the brighter LED

Truth: LED brightness is generally measured with lumen. For LED luminaires of different powers, the higher lumen output it has the more energy it saves. E.g. 5W LED bulbs compared with 6W ones, if the former have higher lumen output, then the former is actually more energy saving than the latter one.

Myth 3 The more LED lamp beads, the higher brightness and price

Truth: The luminous efficacy of a single LED chip varies with different LED technologies. In the current mainstream market, there are various forms of LED chips including high power, medium power, low power, COB chips. E.g. A medium power LED chip has approximately 45lm flux output while a high power one reaches 120 lm and above. It is probable that the luminous effect of 1 LED equals to that of 3 LEDs. In terms of the cost, the high power chip is priced higher than the medium power chip. Therefore, the cost performance ratio of the LED luminaire mainly depends on the components adopted.

Days Inn retrofits into LED linear tubes

Solus provides Seesmart LED tubes for the Days Inn Winona (Winona, MN) in its breakfast and lobby areas.  The new Day White 5800k 15w LED lamps replaced T12 40w fluorescent tubes.  The property is now free from flickering and buzzing fluorescent lamps.  The property reduced its wattage for each two lamp fixture by 63%.  Employees have commented about  the new lighting being more pleasant, brighter and easy on the eyes.

Congrats to Days Inn for implementing LED technology into its property.