Thursday, 26 March 2015

9 Awesome Facts On LED Lighting


LED's are used in Singapore and many other countries around the world. LED lighting has many advantages over traditional bulbs, and you deserve to know more about it. Therefore, we are going to talk about 9 awesome facts on LED lighting.

  



Millions of LED's Installed
There were around 49 million LED's installed in the U.S. in 2012, saving around $675 million in energy costs per year. The United States can save up to $250 million over the next two decades if the country switches to LED lights completely, and Singapore can also follow suit. Energy consumption would be reduced around 50% avoiding around 1,800 million carbon emissions' metric tons in the United States. Nick Holonyak, Jr. invented the first ever visible-spectrum LED at GE in 1962. The LED technology has been advanced over the years reducing costs over time, which made LED's a great lighting solution. Between 2011 and 2012, sales of LED lighting bulbs skyrocketed while costs went down by 40%. LED lighting will comprise 75% of the lighting bulb market by 2030, according to estimations.

Less Environmental Impact
LED's have a smaller impact on the environment compared than any incandescent bulb out there, according to an Energy Department's study. LED bulbs have also an edge over CFL's, which is expected to grow as LED technologies improve over time. In addition to these facts, the Energy Department has also been funding research around LED lighting and other technologies, resulting in 58 patents. These patents include additional ways to use some materials, how to solve technical challenges, and so on. There are also other projects related to cutting costs by improving processes and manufacturing equipment.

Great Energy Efficiency
LED bulbs are up to seven times more energy efficient than any incandescent light out there cutting energy costs over 80%. LED bulbs can also last up to 25 times more than any traditional light bulb, meaning that LED bulbs can last up to 3 years if used 24/7. LED's have been also used in a wide range of applications such as TVs and traffic light, because they are easy to use, have a compact size, can resist breakage, and have the power to focus the light in just one direction instead of having it go in every way.

LED's were Discovered by a Forgotten Genius
LED's were not discovered in the U.S. in the 1960's, as many people think. LED's were discovered by Oleg Losev, a forgotten Russian genius around 100 year ago. Mr. Losev spent his life in many radio laboratories in Russia. This genius died of hunger at the age of 39 during the Leningrad's blockade. Though he did not get formal education, he spent a lot of time on research works and was granted 16 patents over time. He also created the crystadine, the first solid-state generator semiconductor amplifier. In the first paper about LEDs, Mr. Losev established what is known as the current threshold for light emission's onset from a point contant between a silicon carbide crystal and a metal wire, and then he recorded the spectrum of this light. Between 1924 and 1930, Mr. Losev provided the scientific community with a very comprehensive study of the LED, and then he outlined its applications.

Plenty of Applications

LEDs have been used extensively in optical fiber as they can be modulated fast. They have also been used in LED computers using infrared LEDs. LED is also used in medical equipment using signals from sensor circuits. Some sensors have special requirements that only LEDs can meet. Pulse oximeters use LEDs extensively to measure oxygen saturation. LEDs can also be used for photo detection and emission when used as photodiodes. Nintendo Wiis also use infrared LEDs in their sensor bars. Since LEDs emit less heat and are more energy efficient compared to HPS and other growth lights, plant growers are very interested in using them. LEDs also provide great light frequency for plants' bloom period and growth.

UV LED Curing
LEDs are also used in the curing industry. UV LED curing is a new technology used to treat in any surface what is called as monochromatic ultraviolet radiation, and this radiation comes from LEDs. Mercury-vapor lamps traditionally carry out ultraviolect curing. Curing devices using this technology have been incorporated in commercial and industrial applications. UV LED lamps can last around 20,000 hours, but they are sold at a higher price compared to mercury lamps. UV LED lamps do not have any downtime to change lamps, and they do not have consumable lamp costs. However, curable inks made of UV LED have limited availability.

No Ultraviolet or Infrared Emissions
Though infrared and ultraviolet radiation frame visible light's spectrum, they do not contribute to our ability to see. Ultraviolet radiation can cause eye and skin burns as well as damage fabrics, artifacts and artwork. Many traditional sources use infrared or ultraviolet radiation as these things cannot be avoided. LEDs are often chosen for many lighting applications because of the way they generate radiant energy, as they do not emit much infrared or ultraviolet radiation. This reduces the potential for any underirable effect and boosts efficiency.

Tunability
You can mix multiple LED chips into a single product. For instance, you can make white light by combining blue, green, and red chips. In addition to this, you can create light with different color temperatures by combining and adjusting 2 shades of white LEDs. People can use LEDs to increase occupant satisfaction in many settings such as homes, restaurants, hotels, and offices. LEDs' output can also be altered over their lifetime. This is used to reduce depreciation of lumen or/and prevent color shirt. This situation can reduce any initial over-lighting by removing lumen depreciation from any design calculation.

Great Dimming Performance
You can dim any LED lighting product, but you also need to be sure there is compatiblity between hardware devices. You have to make sure that your dimmer combinations and your lamp are compatible to avoid color shift, premature lamp failure, audible noise, no range or very limited of dimming, and even failure to light. 
You might see the foregoing problems at full output or/and when dimmed. They are also dependent on the amount of lamps connected to any dimmer. The top-notch LEDs show better performance when matched with any compatible dimmer compared to HID lighting and CFLs.


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