Interesting Facts about LED
- Light-emitting diode (LED) is basically a semiconductor that transforms electricity into light. Nowadays, LEDs can be 10 times more energy efficient than regular incandescent light bulbs. They can reduce energy consumption by more than 80 percent.
- Nick Holonyak is considered to be the founder of the entire light-emitting diode industry. He invented the first LED in 1962 while working for General Electric. Everything new is just a well forgotten old – this proverb fits well when talking about LEDs. It’s curious that until 1968 the price of LEDs was 200 dollars per unit.
- A good quality LED light bulb has a life cycle of more than 50 thousand hours. This, in turn, is tens of times more than a life cycle of regular lamps. Based on these numbers, we can roughly estimate that an LED light bulb can remain operational for 15 years or even more, working every day for 8 hours without interruptions.
- Parents should keep in mind that, after their child is born, they will probably not need to change a lamp in the child’s room until he or she goes to college.
- Regular incandescent light bulbs spend 90 percent of their energy on heat generation. Light-emitting diodes, on the other hand, use their energy a lot more efficiently. In fact, excessive heat generation is LEDs’ enemy number one. Therefore, a well-organized heat sink can greatly increase effectiveness of LED light bulbs.
- Light-emitting diode lamps have many positive and unique qualities, such as compact size, easy repair, high reliability and a possibility to focus the light in a single direction. Because of this, LEDs are actively implemented in different areas of human activity. Stoplights, car lights, backlight for different digital screens, lighting in houses, offices and streets, and a lot of other devices are without a doubt using light-emitting diodes now.
- Unlike regular incandescent lamps or luminescent lamps, light-emitting diodes do not contain mercury. This, according to recent findings, makes them a lot more eco-friendly. Because of their high energy efficiency and almost complete absence of harmful influence on the environment, LED light bulbs have a big advantage over luminescent lamps. This advantage is expected to increase in the next several years, especially taking into account that LED technology is being improved constantly.
- Light-emitting diode lamps do not attract insects, unlike incandescent and luminescent lamps that have this “habit”. Most of modern household LED light bulbs do not emit ultraviolet light and, therefore, do not draw the attention of insects that are attracted to it.
- Light emitting diodes consume between 50 and 80 % less electricity than traditional light sources. A good quality 7 Watt LED light bulb can replace any 50 Watt incandescent lamp. When choosing an LED light bulb, you should take into account the value of its luminous flux power (measured in Lumens), which is far more important than an overall power of the LED. For example, a suitable replacement for a 100 Watt incandescent light bulb may be two LED light bulbs with luminous flux of 650 Lm.
- Every light-emitting diode is equipped with a transparent plastic cap, often called a lens. This cap serves 3 very important functions:
- Plastic protects tiny wires and components that the diode is made of from air and physical effects;
- A person may hold the diode by the cap, which makes it very easy to install where it’s necessary;
- Plastic of the lens provides the emitted light with different properties, such as different angles of emittance and dispersion.
- Thanks to some of their physical properties LED light bulbs power up immediately. This means that the lamp lights up with full brightness right after it has been switched on. Incandescent and luminescent lamps, on the other hand, have quite a long warm up period.
- Color of the LED depends on the semiconducting material that it is made of, not on the color of the body or the plastic lens. For example, most blue and green LEDs use a mixture of Gallium Nitride and Indium Nitride to produce blue color, while most red, orange and yellow ones use different concentrations of Gallium Phosphide to produce different color shades.
- A Japanese company called Rohm, which specializes in electronic component development, has produced the world’s smallest LED. It is 1 mm long, 0.8 mm wide and 0.2 mm thick.
There is an entire Energy Saving section on our website, where you can find all the components you need to build a good LED light source with your own hands. We have also created a detailed video instruction that will help you to assemble such a lamp without any difficulties.Dmytro Mamchur