LED Light Bulbs
1. Introduction
The Lighting Research Center (LRC) has taken on the ambitious goal of holding the first ever symposium that will comprehensively compare LEDs, OLEDs, and traditional lighting sources in an impartial manner. The symposium will be held under the aegis of the U.S. Departments of Energy and Defense. It will use scientific methodology to shed light on the performance attributes of these technologies under a myriad of applications, rather than take place in a marketing tent. Called "LEDs, OLEDs, and the Competition: Solid-State Lighting Someday and Today," the symposium will be held in Albany, New York on October 25 and 26, 2010. It will feature a panel of leading experts and present empirical knowledge of the current state of solid-state lighting, versus traditional sources, and predictive analyses.
Imagine if you had a bulb that could withstand shock. What would you do with it? What if it also didn't contain hazardous materials, so it was safe to handle and breakage didn't result in expensive clean-up or, worse still, a fine from a regulatory agency? What if it didn't get hot, so it was safe to handle and didn't add extra cooling costs to your operation? What if it was offered in a myriad of color options and provided long life without yellowing or dimming, all while keeping energy costs low? If you are an LED lighting manufacturer or scientist, chances are these are the main attributes you are focusing on when developing LED light bulbs. Solid-state lighting, although in its infancy, is emerging as an energy-saving, environmentally-friendly way to light up the world. With this tiny and supply-constrained market gaining attention among the big boys, the stakes are high. Who will win this race - LEDs, OLEDs, filament-based products utilized by the incumbent lighting companies... or some yet-to-be-commercialized technology?
2. Benefits of LED Light Bulbs
Heat dissipation: Mastered less of it and programmers are simply classic energy-consuming devices! Using a standard light bulb to dissipate 90% of the electricity as heat radiation, it would be better to use a standard light bulb to heat your home in winter. A significant output of all LED lights is useful rather than waste! This has a positive impact on energy efficiency, as commercial use of lighting indoors can result in a significant reduction in energy bills, and indoor temperatures are less pronounced in summer. This can have a knock-on effect by helping to reduce the amount of energy consumed by fans or air conditioning systems. Therefore, your heating and cooling costs can be reduced.
More efficient: Use less energy when producing the same or even more light. Some people believe LED does not shine very brightly. It is better than other types of energy-saving lamps, which can provide much brighter lighting in general. LED, in watts, is relatively small compared to other energy-saving lamps when compared. The manufacturing process of LED, a technique that has undergone many innovations, can produce a light bulb that provides an extremely bright light. A 10-watt LED bulb is the same as a 20-watt compact fluorescent bulb (CFL) and a 60-watt incandescent bulb. A 13-watt LED is the same as a 30-watt CFL and a 75-watt incandescent lamp. A 15-watt LED is the same as a 40-watt CFL and a 100-watt incandescent lamp. Therefore, if you want the same amount of lighting, you can reduce the number of lighting used! However, be aware of your eyes so that you do not dim the brightness too much.
3. How LED Light Bulbs Work
The efficiency of an LED is a measure of the light it produces relative to the power supplied. This value is measured in lumens per watt (lm/W), which provides an output measurement. The specificity of the light given by the LED allows the radiation to be controlled and directed at a high efficiency. The LED provides uniform and intense light, which is useful for many lighting applications, especially display and task lighting. The high efficiency and long life of an LED make it a convenient device to use. They greatly reduce greenhouse gas emissions, and the commercialization of LED technologies becomes a pressing requirement. The greater availability and reduced price of these products make LED widely accepted by the mass market for general lighting.
When the current passes through the layers, the excess free movement of electrons in the n-type layer and the p-type layer results in a combination of electrons and holes. The energy is emitted in the form of light. The substance used in an LED has properties that determine the light's wavelength, which is the color. Red, green, and blue LEDs form the simplest and most important LEDs. By mixing these solid monochrome lights, LEDs can produce any color on the visible spectrum.
An LED is a p-n junction semiconductor device that emits a monochromatic light of a narrow band in the forward bias mode. It is also a multi-layer compound that emits light when electricity passes through it. It is generally made up of four layers: substrate, n-type layer, active layer, and p-type layer. The substrate can be of different materials, such as sapphire, silicon, zinc oxide, and silicon carbide. The choice of substrate depends on the desired wavelength of the light and the type of LED. The n-type layer is made of n-type semiconductor materials such as gallium, which gives the material an excess of electrons. The p-type layer is made of p-type semiconductor material such as boron, which gives the material an excess of holes.
How LED Light Bulbs Work. How do LED light bulbs work? LED stands for "light-emitting diode." An LED is a semiconductor device that produces incoherent narrow-spectrum light when an electric current passes through it. We often think of LED as a type of light bulb that is used to produce white light, but the technology was invented to produce red LEDs. The technology has since expanded and can be found in other colors.
4. Choosing the Right LED Light Bulb
LED light bulbs have various advantages over older energy-intensive technologies. While compact fluorescents require a few minutes to reach full brightness, older lighting sources can need a few minutes to warm up. Light Emitting Diodes are compatible with instant on/off. Light Emitting Diodes have an outstanding energy efficiency ratio, with non-dimmable light bulbs reaching between 40 and 100 lumens per watt. LED light bulbs are more long-lasting than most other types, including non-durable compact fluorescent and incandescent light bulbs. Furthermore, the normal tungsten filament incandescent light bulb has a lifespan of about 1,000 hours, and widely-used compact fluorescent light bulbs have peaking duty cycles which limit the duration of the lamp to between 6,000 and 15,000 switching activities in non-residential purposes. Meanwhile, LED light bulbs, leading before lighting vacancies, generated in the course of service, can survive from 25,000 to 100,000 hours due to their rugged design.
LED stands for light-emitting diode. LED light bulbs challenge the rule of incandescent light bulbs. They are constructed differently and are more rugged than incandescent light bulbs, which shortens their warranties. While both light bulbs have some restrictions and rankings, LEDs compete with efficiency of lumens to watts numbers to a higher extent than incandescent or compact fluorescent light bulbs, have a significantly longer lifespan than non-sturdy non-Light Emitting Diode types, and they require protection against temperature and voltage fluctuations. Inside the node, electricity can travel in one direction only because the diode is positioned amidst the p-positive and n-negative silicon states. By surrounding the p-type silicon with a potent negative charge, electrons are pressed out of the silicon holes and combine at the metal contact n-type silicon electrode and the substrate terminal. Energy is released during this process in the form of photons, which can be utilized for lighting or to create a variety of colors in an array of colors.
5. Conclusion
Incandescent light bulbs waste 90% of the energy they use by giving off infrared heat. That means a mere 10% of the consumption of incandescent lights is used for their light. Furthermore, incandescent light bulbs only have the ability to produce 12-18 lumens per watt - they're much less effective than other forms of lighting. An interesting fact is that if the average American home replaced its energy-hogging incandescent lights with LEDs, it would save more than $400 in annual energy costs. In other words, the average American would no longer be required to pay an energy bill. Reflecting the light, light bulbs generate more heat, which contacts the fixture and the wiring. This heat reduction significantly reduces the risk of fires in CFL and incandescent lights with their conventional light bulbs.
For anyone who embraces conscious living, environmentally sound decisions are a growing aspect of daily life. People are paying attention to the ecological impact of their actions and making choices to benefit the planet. One of the easiest and most popular ways of becoming energy-friendly is to change the light bulbs in your home to LED lighting. Landscape lighting, interior lighting, table lamps, desk lamps - virtually any kind of bulb can be replaced with an LED. Most common household bulbs are now available with LEDs.
