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LED stands for Light-emitting diode, first used inLED, a semiconductor light source, has been widely adopting for assorted lighting usages and has been slowly replacing incandescent lights over the recent years. Although LED is much more environmental-friendly than traditional lighting fixtures, reusing and recycling LEDs is still a very crucial issue. B LED consumes less electricity and provides higher brightness, which makes it a more energy-saving and environmental-friendly choice, not to mention that LED light bulb does not contain mercury like CFL light bulb does.

Content:
  • From physics to fixtures to food: current and potential LED efficacy
  • Four-color laser white illuminant demonstrating high color-rendering quality
  • Target blue net lights
  • Horticulture Lighting
  • Thermal calculation
  • Lighting Solutions
  • Welcome to the SGBC Blog!
WATCH RELATED VIDEO: LED Grow Light Testing GrowLight Versus a 400 u0026 600 Watt HPS LED Grow Lights Lamps LED Garden

From physics to fixtures to food: current and potential LED efficacy

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Need an account? Click here to sign up. Download Free PDF. Trang Dinh Thi Thu. A short summary of this paper.Neither the United States Government, nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.

Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency, contractor, or subcontractor thereof.

The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. This publication may be reproduced in whole or in part for educational or non-profit purposes without special permission from the copyright holder, provided acknowledgement of the source is made.

Seth Schober, Navigant Consulting, Inc. Kelsey Stober, Navigant Consulting, Inc. SSL technology offers clear energy savings, reduced cost of ownership, and even improved lighting performance compared to conventional lighting products.

Even so, it is the early phases of the market and technology transition to light-emitting diode LED lighting. Figure E. New functionality of lighting products that was not possible with previous lighting technologies, is being developed that can enable new applications and increase the value of lighting systems.

For example, active color tuning enables new benefits, such as lighting that can be tuned to engage human physiological responses. Integration of sensors, controls, and communications also allows lighting systems to be part of the Internet of things IoT , which will unlock enormous additional value for lighting systems through data mining and analytics.

However, the technology offers intriguing benefits in terms of brightness, form factor, and effective delivery of lighting that could complement LED lighting solutions. While LED sources are by nature small and bright, OLED sources are large and diffuse, which means they can be deployed very close to the task without creating uncomfortable glare. OLEDs have the potential of being manufactured through very low-cost continuous, roll-to-roll R2R type deposition processes, offsetting the materials cost inherent with these lower brightness sources.

There are an estimated 45 billion lighting sockets in the world [2], and this number is expected to increase through population growth, construction in the developing world, and growth of new lighting applications, such as indoor horticulture. To fill these sockets is a massive manufacturing challenge, but also an opportunity to provide energy and cost-saving lighting products and systems with increasing value.

In addition, SSL technology provides an opening to develop domestic manufacturing infrastructure to create SSL products for the long term. The funding support from DOE provides resources to tackle very challenging fundamental research and scientific inquiry. One such issue is understanding and solving current density droop or green gap efficiency in LEDs, which industry alone has been unable to solve.

DOE support is critical to achieving the ultimate potential for SSL technology, including maximized source and system efficacy, low purchase price, optimized light utilization, and integration with connectivity and control systems.

Includes novel device structures such as tunnel junction LEDs. Improved matrix integration and improved optical control at the downconverter-matrix level.

Also includes advancements in system reliability, form factor, and critical components. The ability to control the distribution of the emitted light would provide additional value.OLED platforms should combine one or more high performance OLED panels with custom driver electronics to achieve efficient, long-life systems.

Manufacturing and Jobs Lighting Manufacturing Status Cumulative Energy Savings Forecast from toThe initial motivations for the pursuit of light-emitting diode LED and organic light-emitting diode OLED technology were the promise of high-source efficacy and the prospects of leveraging semiconductor manufacturing processes.

Industry experts held that high-volume processing technologies from the semiconductor industry could be applied for LEDs, and roll-to-roll R2R processing technologies for OLEDs. While there is still considerable room for improvement, SSL is already fulfilling its promise as it continues to demonstrate improved efficacy over conventional lighting sources, reduced total cost of ownership that enable payback within reasonable time periods, and new features including spectral tunability, advanced controls, and connectivity.

These attributes have led to rapid adoption of SSL, already resulting in significant energy savings. In addition to improved source efficacy, SSL can be more effective in delivering light when and where it is needed, representing an additional level of energy savings that is just beginning to be understood.

As the technology has developed, it has become clear that the impacts of SSL will go far beyond energy savings alone. It has the potential to have profound beneficial impacts on the environment, horticulture, transportation safety, human health, and productivity, all of which can be realized while saving significant amounts of energy compared to conventional lighting technologies. Key impacts of SSL will be discussed in the following sections.

However, SSL sources have a few key features that open a vast array of new values that were not previously possible. This enables delivery of just the right spectrum of light for the application.

This enables active tuning of spectrum or direction for some LED lighting products. OLEDs also have demonstrated these types of spectral control and intensity control.

SSL products can demonstrate all these important features while also performing at high efficacy levels, well beyond what conventional light sources can achieve. These features enable new aspects of efficiency in terms of delivering the right light spectrum in the right place optical control at the right time intensity control. Current LED lighting products have form factors, light distributions, and light output levels that allow for direct replacement for existing, lower efficiency conventional lighting products, thus resulting in rapid adoption for significant energy savings.

The next generation of energy savings from SSL will come from application efficiency, which at its simplest, can characterize the efficient delivery of light from the light source to the lighted task. However, application efficiency can also take into account the effectiveness of the light spectrum for the lighting application, and the ability to actively control the source to minimize energy consumption when the light is not being used.

The final factor in energy savings is adoption. Consumers need to buy and use SSL sources to replace less efficient sources in order to save energy. As with the introduction of any new technology, particularly on the scale of the lighting market, there will be barriers to adoption. Understanding these barriers and actively working to mitigate them will directly result in increased energy savings.

However, consumers often opt for lower cost, lower efficacy products over higher priced, top-of the-line products. Table 2. Together these tables illustrate that the top-performing LED products are already more efficient than incumbent technologies, but have higher purchase prices.On the other hand, LED products typically purchased in , which were priced lower, have lower efficacies that are closer to those of the best-in-class incumbent competitors.

This indicates that there is still work to be done to simultaneously improve efficiency and drive down the cost of LED products to make them more attractive to the general public.

From the survey, LBNL concluded that the mean and median are volatile metrics that represent the tail of the purchase distribution and that the 25th percentile of their web-scraped data best represents the characteristic price for LED lamps [3]. Based on this assessment, the 25th percentile was used to characterize the typical purchase price for LEDs, and the average efficacy was found for products matching this price point.

The analysis in Section 4. Excellent progress toward this target has been demonstrated in the laboratory and in commercial LED packages. Figure 2. OLED technology is still in its infancy but promises high efficacy and low cost, as well as new options for form factor and light distribution.

Section 5. The full efficiency of a luminaire is also defined by how efficiently the light is delivered to the target area, how effectively the color of the emitted light matches the needs of the application, and how effectively the light intensity is controlled. Each lighting application has its own requirements, and how effectively and efficiently the lighting system achieves the requirements defines the application efficiency.

For typical indoor lighting, the intent of the lighting is to enable vision, visual acuity, and possibly, non-visual physiological stimulation. Depending on the application, the intent of indoor lighting may be even more refined than this, with requirements such as high color fidelity, tuned spectra for lighting-specific colors, or more. Other applications will have different objectives for the lighting.Horticultural lighting is intended to provide fuel and signaling to plants for effective growth.

Three additional advances are necessary to maximize application efficiency as efficient light sources alone are not sufficient. These three advances are summarized here and detailed in other sections of this report.

First, a deeper understanding of the requirements of the application, including the physiological responses of the recipient of the light discussed in Section 3.

Second, tailoring the optical distribution of light spectral, intensity, spatial to the application — perhaps in real time — is important to only create the type of light required by the application and to direct it only where it is needed. Third, developing new ways of measuring how well the light has in fact been tailored to the application — again perhaps in real time — is vital to maximize application efficiency. This third advance is especially important because it can help drive the other two advances.

In matching source efficiency to application efficiency, the productivity of the application might be enhanced significantly, a benefit that goes beyond energy savings. While the energy savings and application benefits of SSL technology have been described, consumers must feel confident in the technology in terms of claimed energy savings, compatibility with existing fixtures and switches, and reliability.

In addition, the cost of energy saving lighting products must not be out of reach for the users. Current barriers of first cost, reliability, and compatibility are being overcome and consumers are gaining the confidence required to adopt this technology.

A brief overview of each of these aspects is discussed below. Even with somewhat higher prices, LED products exhibit clear reduction in total cost of ownership, when taking into account the energy and maintenance costs associated with the product.

The long life of LED technology requires new techniques to project and communicate lifetime. However, this point only considers degradation in the LED source and does not account for other, more likely points of failure such as the power supply. This is covered in more detail in Section 3. However, LED products can have different light levels, optical distribution, and color qualities that make the replacement process less straightforward. In addition, LED products might not be compatible with all existing dimmers or power supplies ballasts.

Eventually, new form factors and lighting layouts that better align with the technology will be introduced to maximize the application benefits and increase energy savings. However, with its spectral and optical control, LED lighting is the only lighting technology that can be optimized to minimize environmental concerns, improve aesthetics, and mitigate negative physiological impacts.

A better understanding of all these considerations at the application level is necessary to alleviate concerns and ensure the appropriate product is selected. LED lighting offers the flexibility to maintain or improve the lighting performance while still delivering energy savings. Although these barriers can discourage adoption, LED lighting technology is rapidly gaining market share.


Four-color laser white illuminant demonstrating high color-rendering quality

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How does one of these compare to say the Luxeon Rebel in output? all-audio.pro

Target blue net lights

Twinkling Christmas Icicle Lights. Add for shipping. The series is licensed by Yen Press.There are so many destinations to choose from: the history of the Capital City, the cuisine along University Avenue, the energy of the University of Minnesota campus, the bustle of downtown Minneapolis. It is available as a 50, and ml Eau de Parfum. This venerable team has many thousands of dedicated fans, so in order to get a good spot, it is crucial to book Target Field parking in advance with ParkWhiz. Flipo solar LED rope lights eliminate the inconvenience of messy wires or the need of nearby outlets. Holiday Living Count

Horticulture Lighting

This video will give you a quick overview of the Lighting System Selector mobile app. The LSS app allows users to seamlessly select LED system solutions by guiding them towards the most appropriate and readily available components. Future Lighting Solutions is a leading provider of solid-state lighting technologies, engineering expertise and online simulation and design tools. Our comprehensive portfolio includes a broad selection of LED system components, and integrated solutions that enable our customers to manufacture cost effective, energy efficient lighting applications.

Green Means Go is a public education campaign intended to help homeowners and the wider public have a better understanding of green buildings and their benefits to human health and well-being, as well as to empower homeowners to make decisions to build green into their homes.

Thermal calculation

LED-lit urban farms aim to transform blighted cities with jobs, fresh food article tells about an interesting application for LEDs: A group of high-tech urban pioneers is using LEDs to power a large indoor vertical farming system in Newark, NJ. The seeds are embedded within a cloth medium where they are germinated and exposed to with LEDs which emit specific wavelengths of light for more efficient photosynthesis and less energy consumption.What types of LEDs are needed for urban agriculture system? A grow light or plant light is an artificial light source, generally an electric light , designed to stimulate plant growth by emitting an electromagnetic spectrum appropriate for photosynthesis. Grow lights either attempt to provide a light spectrum similar to that of the sun , or to provide a spectrum that is more tailored to the needs of the plants being cultivated. Plants do not effectively use the entire spectrum of light.

Lighting Solutions

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Light-emitting diodes LEDs have enabled a historic increase in the conversion of electric energy to photons, but this is approaching a physical limit. The theoretical maximum efficiency occurs when all input energy is converted to energy in photosynthetic photons.

Philips semiconductors in Eindhoven to lead the CMOS LEDs can then tap into the horticultural lighting market.

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Ian Ashdown, P. To summarize:. Lamp with a CRI of 90 or above, good. Lamp with a CRI of less than 80, bad.

Designed for next-generation consumer applications, the MI high-performance 4, pixels CMOS LWIR camera technology delivers, says the company, a long anticipated solution for mass market in a convenient wafer level vacuum package.

Natural light often falls short on giving crops what they need to grow and flourish. With Philips professional LED grow lights you can control many aspects of crop growth to get better business results.Whether you produce vegetables, fruits or flowers — in a greenhouse, vertical farm or other indoor facility — we offer a choice of the best LED grow lights for your specific crop. Our tried and tested horticulture LED grow lights can help you increase yields, quality and consistency of your crop. Greenhouse growers around the world use Philips indoor grow lights to improve vegetable, fruit and floriculture crops.

Check out some of our latest video stories and articles, and stay connected by joining our LumiNews to be the first to receive our horticultural LED news. Growers worldwide are deploying smart LED lighting solutions to improve crop yields while reducing energy costs. We take into consideration all aspects of your cultivation facility and growing style, so you can be assured your lighting strategy is custom-tailored to meet your growth goals. LumiGrow has partnered with GroAdvisor to offer leading brands at the best prices, cultivation and extraction facility designs, consulting, staffing, and more.


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