Editor's note: Solid-state lighting (SSL) usually refers to the use of LEDs as a light source, and basically no one is synonymous with this. Solid state is synonymous with semiconductor, so this correlation is quite popular.
For at least 15 years, we have always heard how LEDs will quickly replace all other technologies involved in general lighting. Whether in home and commercial lighting, decorative lighting, street lights, signage, cars, or many other applications that require lighting, these high-efficiency devices provide the same or higher brightness as incandescent and halogen lamps, but consume less energy. There is less fever. Their lifetimes far exceed those of other predecessors, including compact fluorescent (CFL) components, while being more environmentally friendly when recycled.
Despite the cost and other issues to consider, LEDs are penetrating more and more markets and have achieved even more impressive results in established markets. As the world begins to phase out the incandescent lamp, it is clear that LED will be the darling of future lighting applications.
“Organic LEDs (OLEDs) are promising, but are currently limited to displays and backlights. I’m afraid that the OLEDs will achieve the necessary brightness levels and have the same high efficiency and long life characteristics as 1W, 2W and 5W LEDs. Wait a while," said Jordon Papnier, marketing manager at LEDtronics.
"In order to compete with LEDs with higher power, the traditional light bulb industry is working hard to develop a large number of new materials. With the continuous improvement of LEDs, it is worthwhile to see if the alternative materials can keep up with the development of LEDs." Optek Technology's visible LED integration Product Manager Mike King pointed out.
"LED will dominate the lighting market in the next decade," said Hans-Otto Schlothauer, Global Product Marketing Director, LED Lighting Division, Sabic Innovative Plastics. "In the first few years, CFL will go hand in hand with LED lighting. The next lead The technology will be OLED. However, this technology will take several years to fully develop and put into commercial use."
“Philips Lumileds believes that LED will be the main source of light, and it will obviously be the mainstream lighting technology in the next 10 to 20 years,†said Steve Landau, director of marketing communications at Philips Lumileds Lighting. “At least we don’t see any other at the moment. Technology can or will provide quality, efficacy, reliability and cost-effectiveness comparable to LEDs."
Therefore, if you summarize and synthesize the market opinions, you will find that the LED revolution has been unmatched for quite a long time.
Expansion capacity
Although LEDs are general-purpose products suitable for almost any lighting application from ordinary to complex, which part of the market will provide the greatest opportunity for LED development and innovation?
“Ordinary lighting is the single biggest opportunity for SSL. The width and depth of lighting applications are virtually limitless. General lighting is very broad, and application categories are usually divided according to market segments.†Heather Goldsmith, Global Marketing Communications Manager, Future Lighting Solutions Point out.
“When it comes to general lighting applications that use LEDs, we see strong growth in consumer and professional conversions, as well as LED luminaires and corresponding light sources,†said Bernhard Stapp, vice president of solid-state lighting at Osram. The driving force to LEDs is its attractive payback period. Of course, LEDs will be equally divided with other powerful and low-power types of lamps, such as halogen lamps or CFL-HID products. But we believe that not only LEDs can do this. ."
"The main drivers of LEDs in the consumer market are lower power consumption, longer life, higher design freedom and compliance with regulations." Sabic's Schlothauer said, "Because of the elimination of incandescent lamps, it will inevitably lead to replacement of incandescent lamps and low voltage. The need for spotlights, so retrofit design will be the first major opportunity in the LED lighting market. LED will not only dominate the consumer lighting market, but will also be used in many other areas, especially in TV backlighting. The other is the spotlight market. This market will bring more application opportunities to update LED solutions."
The technology market is often unpredictable. Sometimes, highly complex products like smartphones and PCs enter the market as quickly as they are out of the market, and high-performance products with longer lifespans are very slow to launch. This situation is very similar to many LED products, especially those that are labeled as traditional lighting alternatives. What kind of challenges will designers face in this market?
"Some of the challenges are heat and power management and matching color consistency in large applications," said Tony Carrella, president of Traxon Technologies.
OSRAM's Streetlight Advanced LED module (Figure 3) promises to provide the highest efficiency and continuous illumination time for street lighting applications. This LED module consumes much less energy than conventional bulbs. The product is internally packaged with LEDs, lenses and mirrors. There is also an additional lamp holder on the luminaire housing. If more efficient LEDs appear, users can install new modules to existing outlets without the need for tools. The module claims to achieve a color rendering index of 75 to 80, a lifetime of 50,000 hours and a color temperature of 6000K or a warm white temperature of 3000K.
Similarly, Traxon Technologies claims that its Mesh RGB (Figure 5) is the first truly versatile device that allows the installation of LED screens of any size. The product is available in three different versions, each Mesh module consisting of 8 connected grid cells and linked to a vertically fixed point string. This gives the product the flexibility to fit the most specific surfaces. Each grid cell has a size of 31.25 cm x 25 cm x 1.65 m and a pixel pitch of 6.25 cm.
Meet smart grid requirements
Smart grids are a new savior of utilities and a challenge to integrate energy-saving and money-saving technologies into power supply equipment. What do lighting OEMs need to do in terms of consistency and compatibility to support this emerging topology?
“LED lighting is digital technology. It is relatively easy to adapt and compatible with intelligent control systems. The advantage of SSL is that LED lighting systems can integrate 'smart' control into devices such as dimming, proximity sensing, energy saving, etc.†Lighting's Goldsmith said. "But we must also focus on the location of embedded intelligence and identify where it is 'required' and where it is 'want.' Looking ahead, power supply equipment must be commercialized. Just because there is a technology does not mean this Techniques must be designed into each product.
“LED lighting is the most efficient option when using renewable energy like wind, solar or biofuels,†Papanier said. “Most LED devices can be designed to operate at lower voltages such as 12V, 24V or 48V DC systems. There is no need for a high-power buck converter or inverter."
One of the biggest selling points of SSL is its higher efficiency, which can save consumers and business users money. Let's imagine that we have replaced incandescent and CF lights and started to see a lot of savings on monthly electricity bills. At this point, utility providers will start crying and increase their rates, thus eliminating the savings. The cost of consumers and business users will rise, but there is no way to help. In this case, how can lighting OEMs protect their users' goals and investments?
“Even if the cost of services for utilities increases, it can save money,†said Shreiver of Global Lighting. “If you choose not to use more efficient devices, then you will consume more energy. As long as the cost rises, your Monthly billing charges will increase. Business users who do not cause cost increases will pay more than users who use more efficient devices. The added cost is actually the same.
“We found this to have happened in California in the past,†Papanier said. “A few years ago we implemented a statewide rotation of lights and took the first step towards energy savings. Residents responded positively and saved too much energy. So that the power company claims that they have incurred losses, and then demanded and achieved the rate increase. Therefore, we need to legislate to protect consumers and oppose the increase in rates due to energy-saving measures. Utilities need to lower first before asking for higher rates. cost."
"This issue may not be enough to explain the work that some government departments must do to ensure that utilities are based on the best interests of users and keep rates unchanged." Picini pointed out, "using a more modular LED subsystem may be Really able to provide new business and economic models for the utility sector. You can imagine a module like a digital cable set-top box, where utility companies can rent LED modules, charge royalties, and better monitor lighting usage. And to achieve new ways to generate income."
“Ultimately, the savings from implementing solid-state lighting solutions can come from many sources. In addition to energy savings, billing costs can be reduced, and significant savings can be achieved due to reduced maintenance, which is especially noticeable in commercial enterprises. It may even exceed the benefits of energy saving," Landau said.
“In addition, although not directly saving end-user costs, the SSL system can reduce the need to build additional power plants, reduce the total energy required to manufacture, sell, and deploy lighting (because of longer life) and reduce lighting options. The amount of mercury used,†Landau added. “In short, the use of solid-state lighting can bring significant social, environmental and economic benefits.â€
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