- A giant Pac-Man is going to take on Sydney’s Vivid light festival – Business Insider Australia: At this year’s “Vivid Sydney”, an annual 18-day festival of light and music, students from the University of New South Wales will premiere a giant robotic Pac-Man game, complete with glowing LED ghosts and a three-meter maze. Created using a mix of programmable LED strip lighting, laser-cut and 3D printed materials, installations like this are the reason the event is highly popular amongst tourists and locals, attracting 1.43 million visitors in 2014.
- LED market outlook is bright – Energy Manager Today: According to a recent report from Navigant Research, the cost of LEDs has declined to a point where LED lighting is becoming the most economical choice for nearly every application. Through 2024, unit shipments of LED lamps and modules are expected to experience an overall 19 percent compound annual growth rate.
- Construction of SunTrust Park enters next phase – WSB Radio: As construction of the Atlanta Braves’ new stadium, SunTrust Park, ramps up, the MLB team has decided to install LED lighting. Braves’ VP Mike Plant says LED lighting provides many benefits to the in-game experience, including better visual quality for fans watching in the stands and on TV at home and faster on/off capabilities compared to other lighting options.
- America’s smartest bridge to get connected lighting system – New Civil Engineer: The new Tappan Zee Bridge in New York will have the first ever connected LED lighting system for both its road and architectural lighting. The lighting will be able to be controlled remotely from a single dashboard to reflect special occasions such as holidays or wins by local sports teams. Upon completion in 2018, the bridge will be the most technologically advanced bridge in North America.
Location, location, location. Location-based applications have matured a great deal since early navigation devices like Garmin and Magellan GPSs. Location-based applications are very popular in smart phones. Using the location-based applications, you can tell your friends where you are and can find the nearest coffee shop. These applications typically use a GPS chip inside the phone or even location technology called U-TDOA (uplink time difference of arrival). These are the same location technologies used for e-911.
The next generation of location based applications are moving indoors. These new apps can bring all kinds of new uses to the typical smart phone. Because these applications are used inside, they can’t rely on GPS or U-TDOA because these technologies need line-of-sight where walls and other obstructions can limit their effectiveness. These next generation indoor location apps rely on new location technologies such as Near Field Communications (NFC), a new version of Bluetooth called Bluetooth Low Energy (BLE) beacon technology, RFID and even LEDs.
ABI Research predicts that the indoor location market will reach $4 billion US in 2018. Big companies are exploring the indoor location market. Apple and eBay have announced that they’re going to use BLE iBeacon. Apple is actively looking to establish an iBeacon program that can leverage its installed base of iPhones and iTouch devices to provide mobile transactions and offers to retailers and their customers. Retailers such as Macy’s and American Eagle Outfitters are testing iBeacon. Major League Baseball announced a new agreement to use iBeacon for the upcoming baseball season using Qualcomm hardware.
How do LEDs fit in? Several companies are looking to leverage light. Philips is looking at one-way communication between networked LED-based luminaires and customers’ smartphones and a new system from ByteLight that uses a LED light fixture to communicate a unique identifier to individuals with smart phones using tiny pulses of light.
Philips recently shared a demo that uses a supermarket scenario using indoor location technology to guide a customer around a store to gather items for a recipe, and allows the store to send special coupons or offers to customers based on their location in the store. The technology would operate based on the instantaneous response of LEDs in on-off cycles that could transmit data to the camera of a smartphone using light changes undetectable to humans in the store. The customer would need to download an app on their smart phone. Like the ByteLight application, the communication link from the LED luminaires to the smartphone would deliver location data and other offers.
Here’s a diagram from Philips that illustrates how their LED location application would work in a grocery store.
For Further Reading
LEDsMagazine, Philips Lighting demonstrates LED-based indoor location detection, technology, http://www.ledsmagazine.com/articles/2014/02/philips-lighting-demonstrates-led-based-indoor-location-detection-technology.html
RFID Journal, Retailers Test ByteLight’s Light-Based Indoor Positioning Technology, http://www.rfidjournal.com/articles/view?11474
FierceMobileIT, Indoor location market to reach $4 billion in 2018, predicts ABI, http://www.fiercemobileit.com/story/indoor-location-market-reach-4-billion-2018-predicts-abi/2013-10-18#ixzz2v7TLbqKe
The second phase of the US light bulb phase-out hit a major milestone on Jan. 1, 2014, the deadline to end production of 40- and 60-watt incandescent light bulbs. The deadline passed by with not much notice from consumers. But, the end of incandescent light bulbs sets up a new battle: LED light bulbs vs. CFLs.
A recent consumer survey by Osram Sylvania, a light bulb manufacturer, measured public attitudes about energy-efficient lighting and awareness in the US. Here are some of the results:
- 4 in 10 consumers are aware of the January 2014 phase out of 60W and 40W bulbs
- More than half (59%) of consumers are excited about the phase out, as it will help Americans use more energy efficient light bulbs.
- 46 percent of consumers plan to switch to CFLs,
- 24 percent will opt for LEDs, and
- 13 percent say that they will choose halogens.
- This year, 30 percent of consumers say that they plan to buy a lot of traditional light bulbs where still available and will continue using them.
- This is a sharp increase from the 2012 Socket Survey which showed just 16 percent said that they plan to stockpile bulbs.
Light Bulb Wars
Consumers still have time to make up their minds about their next light bulb because retailers still have supplies of 40- and 60-watt incandescent light bulbs on the shelves. Retailers like Home Depot and Lowes have enough stock on the incandescent bulbs for consumers through the spring at least. However, once the supplies dwindle, what should you buy? LED or CFL? Let’s compare.
A descendant of traditional fluorescent lights, compact fluorescent light bulbs (CFLs) contain argon and mercury vapor housed within that spiral-shaped tube. The bulbs rely on an integrated ballast to produce an electric current that passes through the mixture of gasses, exciting the gas molecules that produce the light. The time for the ballast to produce the electrical current causes that typical CFL delay when it is turned on. CFLs use 20-30% less energy than the typical incandescent and last about 9.1 years. Of course, they do contain mercury, so cleaning up after breaking them and disposing of CFLs after they burn out becomes problematic. Here’s a link to how to dispose of CFLs safely for you and the environment.
LED light bulbs
Unlike traditional incandescent bulbs, LED light bulbs generate light using a small “package” of several LEDs in a light bulb. LED light bulbs are more efficient since they use a semiconductor to emit light or photons when electricity is passed through it. LED light bulbs give off more than 80% of the energy used as light. The good news is that LED light bulbs can cut household energy use by as much as 80% and have a lifetime of as much as 22.8 years, about 2.5 times longer than CFLs.
So what do you choose?
Here’s a quick look at some of the LED and CFL light bulbs available on Homedepot.com (pricing as of 1/8/2014). While Cree and Philips LED bulbs are a bit more expensive for a single bulb, they do produce a soft white light comparable to CFLS and traditional incandescent, but they last much longer. If you are looking to save energy, you’ll want to know how efficient they are. You’ll see this in the chart in the column lumens per watt. This is a measure of how well the light source produces light. The higher the number, the better your light bulb is at producing light. Visit your local retailer to see how they look in person, since tastes vary. For an explanation of the Color Rendition Index, read this previous post.
For Further Reading
Fox Business, Retailers Brace for Change Ahead of Incandescent Bulb Ban, http://www.foxbusiness.com/industries/2013/12/31/retailers-brace-for-change-ahead-incandescent-bulb-ban/
Osram, Sylvania Socket Survey, http://www.sylvania.com/en-us/tools-and-resources/surveys/Pages/socket-survey.aspx
NBC News, Majority of Americans still in the dark about incandescent light bulb phase-out, http://www.nbcnews.com/technology/majority-americans-still-dark-about-incandescent-light-bulb-phase-out-2D11805991
NBC News, With incandescents dead, smart bulbs step into the light, http://www.nbcnews.com/technology/incandescents-dead-smart-bulbs-step-light-2D11869426
Buildings, Incandescent Bulb Phase-Out Myths Debunked, http://www.buildings.com/news/industry-news/articleid/16806/title/incandescent-bulb-phase-out-myths-debunked.aspx
Newsday, Light bulb shopping choices under new ban, http://www.newsday.com/business/lightbulb-shopping-choices-under-new-ban-1.6706464
Clearlysapphire.com, Confused about Your Home Lighting? – LED, CFL and Incandescent Compared, http://blog.clearlysapphire.com/?p=492
Clearlysapphire.com continues to follow the growth of LED lighting as well as sapphire and alternative substrates. This week, we’ll focus on a new report from Yole Developpement, a research firm that covers LEDs and the semiconductor industry. Yole recently reported that the packaged LED market will grow from $13.9 billion in 2013 to $16 billion by 2018, driven mainly by general lighting and completed by display applications. The report, Status of the LED Industry, details how LED-based general lighting has surpassed all other applications, representing nearly 39 percent of total revenue of packaged LEDs In 2012.
Costs need to continue to drop to keep LED-based lighting’s momentum in the general lighting market according to the report’s author, Pars Mukish, market and technology analyst, LED for Yole Developpement. He commented, “Cost represents the main barrier LEDs must overcome to fully compete with incumbent technologies. Since 2010, the price of packaged LEDs have sharply decreased, which has had the consequence of decreasing the price of LED-based lighting products.”
Mukish notes that in order to maintain growth, the industry needs to continue reducing pricing. He pointed out that while LED still has some potential for cost reduction, widespread adoption will require manufacturers to reduce costs on all components of the system such as drivers, heat sink, and PCB.
Yole also updates their reporting on the use of alternative substrates in the LED market. This situation hasn’t changed since we last covered alternatives in these posts: Clearlysapphire.com, Alternative Substrates – Dimming the Hype, http://blog.clearlysapphire.com/?p=496 and Clearlysapphire.com, Alternative Substrates for LEDs, http://blog.clearlysapphire.com/?p=293.
According to Yole, companies working on alternatives such as silicon and GaN still face major obstacles. Mukish says the benefit of GaN-on-silicon LEDs depends on decreasing manufacturing cost by using cheaper 8 inch silicon substrates that can leverage fully depreciated and highly automated CMOS fabs. However, he maintains that GaN-on-silicon LEDs still suffer from low manufacturing yields and full compatibility with CMOS fab still needs to be achieved. He added that GaN-on-GaN LEDs benefit from a lower defect density in the epitaxial layers, allowing the device to be driven at higher current levels and to use a lower number of LED devices per system. However, he said that GaN-on-GaN LEDs suffer from low GaN substrate availability and high costs.
For Further Reading
iMicronews, Sample, State of LED Industry, SLI report, http://www.i-micronews.com/upload/Rapports/SLI%20Sample.pdf
Compound Semiconductor, Yole: Inexpensive LED Solutions Pushing Adoption In General Lighting, http://www.compoundsemiconductor.net/csc/detail-news/id/19736834/name/Yole:-Inexpensive-LED-solutions-pushing-adoption-in-general-lighting.html
Novus Light Today, Yole Releases Status of LED Industry Report, http://www.novuslight.com/yole-releases-status-of-led-industry-report_N1675.html