By this point we all know that the future of lighting is the descriptively named light emitting diode. In 1962, the first LEDs to be released as practical electronic components only produced red light with very low intensity, but the original creators could not have known the exponential growth that this technology would experience over the years. Now we live in a world filled with LED lights ranging from the infrared to the ultraviolet and used in every facet of life; from lighting our homes to performing as vital components in some of the most high tech experiments in the world. This is just the beginning.
Most of us with a career as electricians or at least an interest in electronics are familiar with the concept of Moore's Law. This is the concept that the number of transistors on integrated circuits will double over the span of about two years, which should just about double chip performance in the same amount of time. This has held true since 1965 and some have predicted that this could feasibly continue until 2020. What's fascinating is that LED lights have their own version of Moore's Law.
The efficiency of LED lights has been rising in truly exponential fashion since the 60's and it shows no evidence of slowing down. This is known as Haitz's Law and it is named after Dr. Roland Haitz. To be specific, the law states that over the course of ten years the cost per lumen produced by LED lights will decrease by a factor of ten. Alongside this increase in efficiency, the amount of light that a single LED is able to produce will increase by a factor of twenty in those same ten years. This makes for an absolutely astounding pace of advancement over a very short period of time and this is made obvious by some of the LED lights that have been developed by the leading companies in the field.
What does this mean for the future of LED lights? Well, if the 2010 press release from Cree stating that they have developed LED lights that can run at an efficiency of 208 lumens per Watt at room temperature (surpassing Haitz's Law by ten years) is to be believed, amazing things are in store in the near future.
What is a Proton?
What is a Neutron?
What is a Black Hole?
What is a Particle Accelerator?
What is Quantum Theory?
What is the Standard Model?
What is the SchrÔøΩdinger's Cat Paradox?
What is Quantum Entanglement?
What is the Higgs Boson?
What is String Theory?
What is Heisenberg's Uncertainty Principle?
What is a Photon?
What is a Antimatter?