Early LED Lighting Predictions Materialized Pretty Smoothly
It has been half a century since the Light-emitting diodes have surfaced in the industry and the technology has been evolving ever since. Prices alleviated, capabilities boomed and manufacturing gained efficiency, all at the same time. The technology continues to leap ahead with the most basic researches helping gain more ground.
In all fairness, even just a decade back LEDs held out to the promise of being more efficient than any existing technology in commercial and resident lighting. The claim of extremely long operational lives for the LEDs has been substantiated to some extent already.
Here are some early industry predictions that went on to materialize pretty smoothly.
While LEDs have been in the fore for the last 50 years, they have been employed in general lighting for not more than a decade and a half. Mapped by what we can call the LED version of Moore’s law, the industry has always been under healthy evolution.
Haitz’s Law offers some additional insight. It states that every decade, the per-lumen cost of light will fall by a factor of 10. Light generated per LED package also increases by an equivalent factor of 2×10. The law holds true for any given wavelength of light.
Now that LEDs are being used as permanent sources of lighting, there is imperatively a lot of additional involvement than mere LEDs. Any LEDs powered fixture will need one or more of these elements: heat sink, optics, phosphors and additional packaging for each of these.
It was once predicted that as the world switches over to LED lighting and chooses it over the incandescent technology, the sales in all the allied element industries would boom simultaneously. And the conversion has not been disappointed either. The prices of these products have also fallen down step by step.
Industry insiders will be aware of the role of the semiconductor GaN (Gallium Nitride). The substrate bond is generally fused with silicon carbide or sapphire. Even more substrates are now under development, as it should be in any progressive industry.
It cannot be denied that LEDs are more versatile and conjure up greater efficiency that most other lighting sources that have been devised. The LEDs also turned out to be great at heat management. While all light devices emit heat, LEDs do not radiate it from the front. The heat is accumulated at the p-n junction and the heat is removed so that the LED goes to live its lifetime. This is where the heat sink of the fixture comes to the aid.
While the light produced in LEDs is proportionate to the current that flows through them, the conventional DC power source has also been thoroughly challenged by manufacturers that now opt for AA and AAA batteries.
On the whole, the LED industry came off age, delivering on almost all the predictions and expectations. It remains to be seen how the industry fairs in the wake of high demand for cleaner and recyclable forms of energy like solar and wind energies.