Tag Archives: led

New LED Driver Could Provide More Efficient & Brighter LEDs


A new high-performance LED driver has been developed by researchers from the Department of Electronic and Information Engineering. The driver will provide brighter, more energy-efficient LED light bulbs.


How does it do it? The driver provides power to the light bulbs via a “multi-level PWM” or pulse-width modulation. This innovative approach has showed substantial improvements in light quality and energy efficiency.


The press release explains, “By traditional method of pulse width modulation, LEDs are fed pulsed current instead of steady DC. The drive current is turned ON and OFF at a rate faster than being perceptible by human eyes. Power LEDS in pulses make their light output easily controllable.”


Source: Clean Technica.com

Market for Lighting Controls Will Increase with Adoption of LED Lamps

A new report released from Navigant Research found that the market for lighting controls in commercial buildings would increase as the adoption rate of LED lighting systems increases. It predicted that the worldwide revenue of networked lighting controls will grow from $1.7 billion annually in 2013 to more than $5.3 billion by 2020.


“Building owners and managers, who are accustomed to the idea of centrally monitoring and managing their heating, ventilation, and air conditioning systems, are beginning to expect the same level of control from lighting systems,” says Jesse Foote, research analyst with Navigant Research.


The “Intelligent Lighting Controls for Commercial Buildings” report concludes that as prices for LEDs fall and drive up adoption rates of LED lamps, the adoption of lighting controls will also accelerate.


The report analyzed the global market for lighting controls for commercial buildings, including both new construction and retrofits. It details the market drivers for these technologies, as well as barriers to adoption, and includes profiles of select industry players.


Read more about the report at Navigant Research.

Switch to LED Lighting Saves YMCA 78% On Electric Bill

The Bedford-Stuyvesant YMCA in the greater New York City area is shining a little brighter these days. The 65,000 square foot building upgraded its lighting system last month.


The updated lighting includes the pool and surrounding area, which received minimal natural daylight.


Switching from their existing fluorescent and incandescent lamps, the YMCA opted to make the switch to LED, which uses 50 percent less energy compared to the other lamps.


The retrofit will result in a yearly savings of about 50,000 kilowatt hours, which equals to a savings of about $10,100.


Source: Energy Manager Today 

LED Demand Fuels Global Price Drop


This past May, the price of LED light bulbs declined globally by 1 percent. LEDInside, a research division of TrendForce, found that the most obvious price reduction was in Taiwan, but the U.S. also experienced a decrease as well.


The cost of LED light bulbs is higher than older incandescent bulbs, but is much more efficient, and offers a longer life. The increasing popularity of energy-saving lighting, and the demand for LED technology, signals a huge growth in the market and a lower cost of LED.


“As well as the dropping prices, the low energy-consumption of the [LED] bulbs will help those purchasing now to see lower energy bills almost immediately.”


Source: Compound Semiconductor

Is There Room for OLED?


According to a report by IDTechEx, OLED lighting will account for just 1.3 percent of the market size of LED lighting in 2023.


The difference between the two lighting technologies is that OLED lighting is a surface emission device. While OLED lighting offers unique design features, it may only find a niche market for certain applications due to it being less efficient and more costly than LED.


Right now, OLED lags behind LED in terms of efficiency with 20-50 lumens per watt (lm/W) compared to 90-100 lm/W in LEDs. OLED lights also offer fewer hours than LED.


Of course, OLED is still in its developing stages. “The growth of the OLED display industry will aid the OLED lighting sector with cheaper, higher performance devices over time.”


Source: CEPro


By Gaylen Davenport

LED Lighting Innovation Continues

This year’s Lightfair showcased some of the top trends and innovation unfolding this year.

As it has for the last five years, LED continues to impress with its innovation. In fact, many vendors have produced LEDs that come in warmer temperatures (2700K and 3000K). Lighting control for digital LEDs was also showcased.

“This year, a noticeable number of lamps and fixtures didn’t look like they had LEDs inside. Part of this is a result of LED performance increases, which now allow manufacturers to add glare-reducing diffusers to cover the point source chips.”

What does this mean for businesses? LED lighting is quickly becoming the same color and shape of existing fixtures so you won’t be able to tell the difference. One of the only distinctions between efficient and outdated lighting is a smaller utility bill.

Source: Green Tech Media


By Gaylen Davenport

LightFair International Talks LED Leapfrogging

The LightFair International in Philadelphia this year introduced a couple of new terms taking the industry by surprise: rolling retrofits and LED leapfrogging.

Charlie Szoradi, CEO of Independence LED, explains how LED leapfrogging is “jumping to the end-game and retrofitting with LEDs, rather than repeatedly paying for the labor of installing slightly better fluorescents.”

Rolling retrofits are another approach where building owners simply replace burnt-out lights with LEDs in order to avoid waiting for a system-wide RFP.

Three factors to consider maximizing the return on investment of LEDs are run time, inefficiency of existing lights, and cost of electricity. Run time refers to how long lights are on, and the inefficiency of existing lights add to a higher electricity cost. “If a building is high on all of these factors, it’s the perfect application scenario for LEDs,” says Szoradi.

What are some other benefits and factors that come into play when considering LEDs? Share your comments below.

Source: Energy Manager Today


By Gaylen Davenport

Benefits of LED Lighting for Industrial Needs

Compared to inefficient incandescent lighting, LED is an innovative technology. While the initial price point of LED bulbs are more expensive, the energy savings and projected life span may sway nonbelievers, especially in the growing industrial sector.

A recent article from UK-based Catherine Dickinson examines the benefits of LED lighting to the industrial sector. “The reality is that LEDs easily match the lumens of more traditional bulbs because LED light is simply brighter than the alternatives.”

Another benefit is that LEDs generally last longer and save energy. “A typical domestic LED light will last 25 times longer than an incandescent bulb, and a UK study has indicated that 3 million kWh per year could be saved by introducing LED lighting in social housing.

While the initial cost of LED lamps may be expensive, the savings can add up and have a huge impact on efficiency, and cost-effectiveness of a warehouse, factory, or any other industrial building.

Source: Green Building Elements


By Gaylen Davenport

Changing All the Lights in New York City

Replacing all the streetlights in New York City is no small job. The city, however, was on board with the idea of using LED lights city wide. In 2009, after completing thorough testing, a project to replace all the city’s streetlights began and became a model for other cities to study and follow.

The project is expected to be completed by 2019, and will reduce 35 percent of electricity use in streetlights.

Margaret Newman, chief of staff for the NYC Department of Transportation said that’s about $250,000 per year of utility savings and about 700,00 kilowatts per year in energy savings  – and that’s just for 1,500 fixtures in Central Park.

“What I recommend [for municipalities looking at retrofitting to LED] is to really evaluate your asset,” said Newman. “A lot of cities don’t even know what they have out there.”

To read the complete interview with Newman, visit Greenbiz.com.


By Gaylen Davenport

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