In the past, perhaps few would have predicted that LEDs in watch displays would be the lighting technology of the future. But it has happened and LEDs are now being used for general lighting purposes. Could OLEDs or laser diodes replace LED technology? And what about light-emitting plants?
In the 70s, General Electric engineer Edward E. Hammer developed an innovative way to create light. This was the CFL (Compact Fluorescent Lamp) technology. Compact fluorescent lamps became widespread around the world within a few years. Over time, a number of improvements were made and they were used in homes, offices, shopping malls, schools and hospitals for many years.
While CFL technology was accepted all over the world, the question on the minds of technology enthusiasts was what technology would replace the CFL. In those years, perhaps few would have predicted that LEDs in watch displays would be the lighting technology of the future. But it happened, and LEDs are now being used for general lighting purposes. Spaces that were previously lit with compact fluorescent lamps started to be illuminated with more efficient LED lamps.
Throughout history, there have been many ways to create artificial light. Each new technology offered more advantages than its predecessor and replaced it. It is safe to say that LEDs are not the ultimate way to create artificial light. However, LED technology still has many challenges to overcome. This means that LEDs will see further improvements over time.
Could OLEDs or laser diodes replace LED technology? What about light-emitting plants?
I’m voting for laser diodes, as some luxury cars are now using laser-based headlights to achieve better and brighter light. With the widespread use of laser technology, I expect it to become cheaper and be used in other areas. Laser diodes have some advantages over traditional LEDs; they have a higher theoretical maximum efficiency, they can emit more energy per surface area.
Light-emitting plants could be my second option. Genetically engineered houseplants and trees can start producing large amounts of natural light. Pots on the windowsill could charge with sunlight during the day and produce light to illuminate the inside of the house at night, just like a solar light.
Just thinking about these things can be exciting. We will see what the future holds.
