What is LED Lighting?

What is LED Lighting?

Led Lighting is lighting which solely makes use of LEDs, small lights, often assembled in groups of 18, 21 or more in one led light bulb. More »

What is an LED Bulb?

What is an LED Bulb?

A LED light bulb is basically nothing more than a collection of small LEDS assembled in one bulb, but the long list of benefits LED bulbs offer compared to traditional light bulbs have made them popular More »

How Does an LED Light Bulb Work?

How Does an LED Light Bulb Work?

LED, or Light Emitting Diodes, Light Bulbs represent one of the recent inventions in science that is predicted to curb down the pollution caused by incandescent light bulbs or gas-based More »

The Advantages of LED Light Bulbs

The Advantages of LED Light Bulbs

Undoubtedly, LED light bulbs are the future of household as well as industrial lighting due to the many advantages they have over the infamous incandescent light bulbs. More »

Energy Efficient LED Light Bulbs

Energy Efficient LED Light Bulbs

We seem to have destroyed everything Mother Nature has bestowed upon us. It’s awful just to think about what the next generation is going to be born into – total mayhem created by mankind More »

 

How Does an LED Light Bulb Work?

LED stands for “light emitting diode” – an object that we all became familiar with at school. For decades, LEDs have been used for a wide range of applications from digital clock displays to moterway signs. An LED light bulb is made up of several LEDs placed together. Typically, around 20 diodes are used, although this number can be much higher.

Unlike traditional bulbs, LED light bulbs do not use a filament. Instead, the LEDs themselves are semi conductor diodes, which create positive-negative junctions by using an electronic chip. This, in turn, produces the light that we see.

THE LED has both a positive connector (anode) and a negative one (cathode). When power is supplied to the diode, a current of electrons flows from the anode to the cathode. This results in the flow of electrons and electron holes into the junction from electrodes. When an electron meets a hole, it creates a lower energy level that provides energy as visible light.

A single LED can only produce light of one colour. By using slightly differing techniques, it is possible to alter the colour of light that a LED bulb emits. Different methods for altering colour include:

  1. Wavelength Conversion, which is done by converting some or all of the LED’s output into visible wavelengths.
  2. Colour Mixing, which is simply done by using multiple colours of LEDs in a bulb, effectively blending the light to produce a different colour output.

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