The Technology Behind the Design and Application of LED Lights

The modification in the structure of the bulbs and the changing designs of the tube lights took place after the takeover of new technology.

Globalization has brought about immense changes in the world and each factor has had its impact on various sectors. Some major affected sectors are the electricity and lighting industry.The conventional inefficient lights have become obsolete and redundant and are easily being replaced.

LED lights are replacing the fluorescent and incandescent lights. The technology behind these lights not only enhances their effectiveness but also makes them environment-friendly.

What are Led Lights?

LED is the acronym for light-emitting diode i.e., it consists of a twin structure.

The two – anode and cathode look like a dual structure. This is referred to as the diode.

An LED is a semiconductor. It emits lights by releasing photons when light is passed through it. It is a small light bulb.

Components and Structure of LED (Design)

  • Anode (long)
  • Cathode (short)
  • Flat Spot
  • Epoxy lens or case
  • Wire Bond
  • Reflexive Cavity
  • Semiconductor Die
  • Anvil
  • Post
  • Anvil and Post form the Leadframe

History of LED Lights

The history of led lights starts with Electroluminescence. This phenomenon first came to being, upon which various other experiments were done until Zoltan Bay and Gyorgy Szigeti LED the origin of Led lights.

From thereon multiple colours and types were developed, starting with infrared ones and then exploring ultraviolet rays.

Then began their commercial use. They were specially made to suit the needs of the commercial and industrial market.

Colours in Led Lights

By changing the material of the semiconductor we can make LEDs emit light ranging from visible light all the way to ultraviolet and infrared.

Colours:

  • Red Led
  • Blue Led
  • White Led
  • Red Green Blue (RGB)
  • Based on Phosphor

 

Types of LED Lights

The different types of Led lights differ from miniature to high-powered to AC-driven etc.

Types also include:

  • GaP i.e., Gallium Phosphide
  • AlGaP i.e., Aluminium Gallium Phosphide
  • GaN i.e., Gallium Nitride
  • GaAs i.e., Gallium Arsenide
  • GaAsP i.e., Gallium Arsenide Phosphide
  • AlGaAsP i.e., Aluminium Gallium Arsenide Phosphide
  • GaInN i.e., Gallium Indium Nitride
  • SiC i.e., Silicon Carbide
  • ZnSe i.e., Zinc Selenide

Classes of LEDs include: Visible and Invisible

Applications of LED Lights

  • Signals

Signalling includes the traffic lights. Here Led lights prove most useful since they are very small and save a lot of energy. They highlight a particular light and help us see and understand the traffic lights – red, yellow and green.

Another form is communicating data and signalling others.

  • Lighting and illuminating

Lighting and illumination mean illuminating or highlighting a place. For example, stadiums, dance platforms or stages, function halls etc. are lined with Led lights to illuminate the place. This lighting makes the place seem more exciting and attractive.

  • Absence of human vision

LED lights also prove beneficial when performing tasks like measurement or others where the human vision can’t be used.

  • Responding to incident lights

LED lights not only illuminate but can also respond to any light incident onto it.

Daily Applications

When we enter some cars, we find them lined with LED lights. Such lights are also used for stairs, for furniture like beds etc.

Nowadays, these lights have become popular with gamers who are now using Led keyboards and monitors and this technology has also been transferred to some musical instruments like the keyboard and the MIDI Controller.

Gaming rooms and dark places use LED lights to highlight areas that they want to put focus on. These lights can also be used for signs such as shop signs or advertisement boards.

We find LEDs in the light behind some televisions. They are put up there to give an enhancing effect to the television. Such backlighting is also used for smartphones and other gadgets.

Now, LED bulbs that have come up also have features that allow us to change their colour with an application in our phone!

Advantages of Led Lights

  • Led Lights are highly energy-saving. They use 95% of the energy to emit light and only 5% goes waste as heat.
  • Led Lights are eco-friendly and do not harm the environment.
  • Led lights are durable and better than conventional lights.
  • Led lights have a long lifespan and do not get spoilt easily.
  • Led lights are very cost-effective.
  • Led Lights are very bright. Thus, only a few such lights are required.
  • Led Lights are not made of the harmful material – Mercury.
  • Led Lights have increased efficiency.

With the decline of conventional bulbs, LED bulb manufacturing began. Led lights have changed the modern conception of lights. Lights are no longer judged or chosen by their appearance or colour. They are also selected because of their special features and factors. They need to be cost-effective. They should not be harmful to the environment. They should be energy efficient. The list goes on and on…

Yet, in today’s times, the Led lights prove to be the most useful and efficient lights as a result of the technology behind the design and application of the lights.

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