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Archive for November, 2010

Environmental Positive Aspects Of Choosing LED Lighting At Your House

26 Nov

We all are challenged to do our role to save energy. By making little changes in how we live, we can start to make an impact on our world. One small change we all can make is to change our home and outdoor light fittings to LED light . There are numerous options for LED home lights and LED camping and hunting outdoor equipment on the market, all of which provide the energy efficiency advantages in LED products. The advantages can become evident quickly as we start to see our energy bill costs reduce for a couple of months.
For LED home lighting, there are many options available other than just bulbs. You can find LED light fixtures for your home, indoor and out, which will provide low energy, environmentally-friendly lighting that can save you money on your electrical bill.
If every single home in the United States were to change to LED home lighting, 90 power plants can be retired, a potentially powerful impact to the long-term health of the environment. Being energy-efficient and environmentally conscious doesn’t have to disrupt your entire life. The switch is as difficult as changing one light bulb in your house, the results of which would help you save money on your electricity bill every month. Just one home lighting fixture, one light bulb can be a positive step forward for your household. Take a look around your home and count the number of bulbs you use and look at how often you change them. Say, for instance that you change a bulb every two months. Now, consider that by changing them all to LED lighting for your house, you could leave them without needing to change them for 20 months. The slightly higher upfront costs of LED lights seem sensible.
By using lower energy LED home lighting in your home, even one bulb could keep one half of a ton of carbon dioxide out of the atmosphere throughout the life of the bulb instead of using incandescent light bulbs. Switching also keeps sulfur oxide and nuclear waste from the environment as well, leading to a cleaner world and one that will last much longer. By switching, our environment could easily rejuvenate itself without struggling with the excess carbon dioxide, sulfur oxide and nuclear waste emissions that are being released into the atmosphere each day. Even changing one lonely bulb in every house to LED home lighting would make a significant influence on the environment.
LED lights are less costly to function, but are a little more costly to buy.LED home lighting needs just one third of the energy that an incandescent light will use. A single 18-watt LED light can easily replace a 75-watt incandescent and in the life of the LED light, will save 570 kWh of electricity. With a basic 8 cents per kilowatt rate, that amounts to $45 dollars in electricity bill savings.
LED lights certainly are a wonderful innovation which has transformed the way the world is lighted. Not only are they durable, they have several environmental advantages. LED lights are five times more efficient than the usual normal incandescent light bulb and they last ten times as long. LED lights also use between 50 and 80 percent less energy compared to an incandescent light.

 

Because LED lights are better than conventional lights

26 Nov

Light Emitting Diode LED lights may cost more than traditional lighting, but educated customer choose light LED because durable, consume less power, lighter and less care-intensive work, which would impose higher price of others. Many communities are now the switch lights up when it comes to light lights, neon signs, headlights, taillights, headlights, flashlight, light sailing boat, home, garden grow lights, TV,and many others. In the near future, LED light used to replace any light, lamp, lamp, and it is currently.

The life of an LED is 100,000 hours, including 11 years of continuous operation. On average it takes 8-12 years to replace the LED bulb than traditional incandescent bulbs, take 2-4. It eliminates the need for routine bulb replacement is expensive. On the other hand, LED solar lamp needs only a tenth of thethe performance of conventional lamps used.

LED tail lamps provide a safety car, especially on a long and dark. They are small, thin and produce excellent outdoor lighting, especially in direct sunlight. This is very useful as a defense are met in the streets for safety, since there is a very direct field of light, if it is aimed directly at a particular place or object. There are signs more visible to drive the car behind you, so turn lane changing, braking, could provideand easier. LED lights are actually the lack of rear accidents in recent years has declined.

Interior Car Light is important because not only the second appearance of the vehicle, but it also seems right on the outside. There is a wide range of colors, lights, choose how the red, white and blue LED. Drivers can choose the dome lights, garland, LED lights wedge as their internal LED lighting. One way to satisfaction, if you want it to ensure the LED lightsmake sure it is seated. The LEDs are very bright and more focused so that they lose a lot of motion, if not positioned properly. It is also designed for different lighting if necessary, for example, to focus the beam, or as three-dimensional light.

Auto LED bulb can eat the same brightness using only 80% of the total energy. Produces less heat to avoid the explosion in the event of a crash helps. LED lighting is also very light bulbs thanproduce high frequency vibrations that can interfere with the performance of the car. Make sure you point the LED display on the windscreen of the car behind you, as engineers have created high-gloss reflectors and lenses to ensure that each gram of bulb come directly from the lands in the right place.

In general, standard LED is also less bright than the traditional light bulb, performance, explains its low energy consumption and long life. However, it cannor give, you’re a light for less energy consumption equals. In other words, if the goal is saving as much energy as possible is your goal, LED lamp is for you. Not only LED designed, people could light of less money, but their main task is to most of the light in safety thanks to a better quality than usual.

 

LED lights guide the intelligent lighting

26 Nov

Energy subsidies for energy-saving lamps in large scale

As the leading policy of a low carbon economy in 2010, energy saving penetrate deeply into the major cities. Beijing, led by energy-saving lamps subsidies to promote low-cost high-quality energy-saving lamps to the urban areas around Beijing, for the first time to achieve Beijing home, sharing the green light. In this will, Guangdong, Hubei, Fujian and other places, energy saving lamps have also been popularized and achieve landscape, home, the popularity of industrial energy-efficient lighting, led lighting products a comprehensive energy-saving, healthy development. Incandescent phase-out strategy to achieve this rapid progress, and promote LED lighting, solar lights, green, energy-saving development.

Intelligent Lighting LED lamps to guide the development of energy-saving

Guangzhou International Lighting Fair, Light Fair (Guzhen Lighting Fair) and other international exhibitions, LED lighting products have become the protagonist of the exhibition, there is no doubt that modern energy-saving LED lighting, intelligent lighting, a major force in the development,

Recently, the Guangzhou Asian Games opening ceremony of the LED lighting technology, Asia has witnessed the amazing miracle of Flower City, regardless of the stage, electronic screens, aviation lights, stage lights, or LED lamp beads clothing, modern low-power, high brightness lighting technology, grand occasion to show the most of the Asian Games, the Asian Games opening ceremony to create a comprehensive scale, the legendary event.

The rapid expansion of monopoly market improved lighting sale

At present, the lighting monopoly market mainly Macalline, actually home-based national chain of home stores, and lighting in various parts of the city, such as the Han to lighting the city, brilliant lighting City of Lights Lighting City, Bandung foreign exchange and so on, while in the second tier cities, mainly lighting store brand appears, for example, Lai really lighting, art lighting master, Eden beauty, quality of life, etc., but master of arts especially lights, just the beginning of this year, China Merchants join After three quarters of the current has become the largest, most professional, most well-known, the first three quarters this year Arts and Master of lighting lamps over the country hundreds of stores, lighting chain, brand monopoly, spur-round development of medium and small cities lighting market .

With the rapid development of the overall level of renovation, adaptation of modern furniture, home appliances, building materials, lighting, home lighting as decoration during the course of one of the most important, while the overall consumption level lighting, broken down by household, transportation, commerce, mainly decorative several major types of furniture to the lighting industry become the third largest after the building materials industry. The energy, health, overall, the rise of the concept of intelligent lighting, catalysis, “four-dimensional lighting” the era of consumption, product quality, service and other issues as consumption increased, market expansion, the main problem in the form. Expert analysis, professional, branded store will take the initiative to promote market stability and healthy development, and become the main trend of the industry and the rise of power.

 

LED Device Could Advance Photodynamic Therapy for Skin Cancer

12 Nov

Scientists at UC Irvine are exploring new ways to image cancerous lesions using LEDs that might enhance photodynamic therapy (PDT) treatments for cancer.

Can skin cancer be treated with light? Scientists at the University of California, Irvine (UC Irvine) believe so. They’re exploring new ways to image cancerous lesions using LEDs that might advance a light-based technique for treating cancer called photodynamic therapy (PDT), according to an article on the OptoIQ website.

The work will be described at the Optical Society’s (OSA) 94th annual meeting, Frontiers in Optics (FiO) 2010 at the Rochester Riverside Convention Center in Rochester, NY from October 24-28.

In PDT, photosensitizing chemicals that absorb light are injected into a tumor, which is then exposed to light. The chemicals generate oxygen radicals from the light energy, destroying the cancer cells. PDT is currently approved by the U.S. Food and Drug Administration (FDA) for the treatment of esophageal and lung cancer.

Rolf Saager, who works in the lab of Anthony Durkin at the Beckman Laser Institute at UC Irvine in collaboration with Kristen Kelly, M.D., and Modulated Imaging, believes that PDT could also be used to treat skin cancer. But one obstacle to this application is the lack of a detailed imaging technique to target and monitor the effectiveness of PDT.

Exploiting a technique known as spatial frequency domain imaging, the team has designed a new device with an array of five different colors of LEDs that illuminates skin with distinct intensity patterns. These patterns can change depending on the structure of the tissue and the pigments in the skin. With appropriate models of light propagation, the resulting images reveal the biochemistry of the tissue. “Through this imaging modality, it is now possible to assess how the therapeutic light will travel throughout the affected tissue, quantify the drug present within the lesion and monitor its efficacy during treatment,” says Saager.

To evaluate this spatial frequency domain imaging system, the scientists imaged a small population of skin cancers prior to treatment to characterize the variability among subjects and within the lesions themselves. The process took 5-10 seconds and produced images with a resolution of 30 microns, revealing spatially resolved maps of the optical properties of the lesions, tissue oxygenation and quantitative distribution of the photosensitizing drug.

 

New “Diamond LED” Resists High Temperature and Large Current

12 Nov

A deep UV LED using diamond semiconductor has been developed by National Institute of Advanced Industrial Science and Technology of Japan (AIST), with the details of the development planned to be disclosed at the 56th Spring Meeting of the Japan Society of Applied Physics taking place from March 30.

The new deep UV LED uses a p-i-n-structured diamond semiconductor stacked on the 2mm-square diamond substrate, emitting deep ultraviolet light of 235nm wavelength, with output of 30μW under a current of 320mA.

There are two important characteristics of this new LED according to AIST. Firstly, its luminous efficiency continues to increase even under a large current, secondly, it can well resist high temperatures. Specifically speaking, with a current of a density exceeding 2,000A/cm2 through a 120μm-diametered electrode, the diamond LED still can have its luminous efficiency increasing without being saturated, according to AIST. As to the excellent heat resistance, even when temperature rises to 420°C, the light emission intensity of the LED does not degrade but continues to increase, AIST said.

The diamond LED emits light because of the generation of “excitons.” For general LEDs, the excitons is vulnerable to heat and often deteriorates quickly, while the excitons generated in the diamond LED are very stable and will not break until 600°C, which is the major reason of its excellent temperature resistance.

At present, the commercialization of diamond LEDs is limited by the expensive price of the diamond substrate, with the available diamond substrates usually to be several square millimeters in size.

To solve this problem, AIST said they have been developing a technique to stack a polycrystalline diamond semiconductor film on a Si wafer, with the prototype formed with the new technique having efficiency only an order of magnitude lower than the currently developed diamond LED. “Because it only requires quite common materials such as silicon and methane, when the technique becomes practical, diamond LEDs can be produced at a very low cost.”

 
 
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