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What are LEDs?
LED stands for light-emitting diode. LEDs are small light sources that become illuminated by the movement of electrons through a semiconductor material. Besides the long product life and the reduced maintenance cost, LEDs are energy efficient, they deliver more lumens per watt over other light sources. Also, there is no mercury contained in LEDs. By using less energy, LEDs not only save money, but also limit negative impact on the environment. LEDs are a cost effective, reliable and clean light source.
LED Advantages
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- LED’s have an exceptionally long operational life. Super Bright White LEDs have a projected life ranging from 40,000 to 50,000 hrs when proper heat sinking is incorporated into the fixture design and the ambient conditions of the installation are factored in which allows for reduced maintenance and overall lifetime cost. - LED’s are vastly more efficient at 80% electrical energy converted to light while incandescent loses 80% electrical energy in the form of heat. - LED’s can operate in extreme climate and temperature conditions ranging from -40° F to 180° F without the issues involved with fluorescent technology. - LED’s produce a minimal amount of heat which allows them be applied to a wide variety of fixture setups & designs as well as minimizing the head radiated onto objects and people within the vicinity of the light source. - LED’s can emit light in virtually any desired color without additional color filters as well as be programmed to produce an unlimited number of color pattern sequences. - LED's produce no ultra-violet(UV) light which is ideal for sensitive or delicate illuminated objects. - LED’s are solid state devices which make them very durable, shock and vibration resistant due to their plastic housing. - LED’s can be designed to project light at specific angles and directions unlike incandescent bulbs which radiate in all directions without the use of reflectors. - LED’s have no delay or warmup time when switching on unlike fluorescent lamps which need time to achieve their color temperature. - LED’s have an environmentally friendly design because they require no filaments or toxic/combustible gases to produce light. |
Energy Savings
According to the U.S. Department of Energy, in the next 20 years, rapid adoption of LED lighting in the U.S. can:
— Reduce electricity demands from lighting by one-third
— Eliminate 258 million metric tons of carbon emissions
— Avoid building 40 new power plants
— Create financial savings that could exceed $200 billion
Energy saving ideas from the Alliance to Save Energy
How are LED lighting products different from other lighting, like fluorescent or incandescent?
LED lighting is more efficient, durable, versatile and longer lasting than incandescent and fluorescents lighting. LEDs emit light in a specific direction, whereas an incandescent or fluorescent bulb emits light — and heat — in all directions. LED lighting uses both light and energy more efficiently.
For example, an incandescent or compact fluorescent (CFL) bulb inside of a recessed can will waste about half of the light that it produces, while a recessed down light with LEDs only produces light where it’s needed — in the room below.
Incandescent bulbs create light by passing electricity through a metal filament until it becomes so hot that it glows. Incandescent bulbs release 90% of their energy as heat.
In a CFL, an electric current is driven through a tube containing gases. This reaction produces ultraviolet light that gets transformed into visible light by the fluorescent coating (called phosphor) on the inside of the tube. A CFL releases about 80% of its energy as heat.
LED lighting products use light emitting diodes to produce light very efficiently. The movement of electrons through a semiconductor material illuminates the tiny light sources we call LEDs. A small amount of heat is released backwards, into a heat sink, in a well-designed product; LEDs are basically cool to the touch.
LED to Fluorescent Lamps comparison
| LED | Fluorescent | |
| Dimmable | Yes | Yes (color shifts to cooler light) |
| Compact Light Source | Yes | No |
| Blink and Flutter Problems | No | Yes |
| UV Radiation | No | Yes |
| Mercury Pollution | No | Yes |
| Breakage | No |
Yes |
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