The main advantage of fluorescent and LED bulbs over aging incandescent bulbs is economy. However, new research has made it possible to create light-emitting filaments that are as efficient as, if not superior in efficiency, modern LEDs.
The fact is that a lot of energy in incandescent lamps is lost as heat. A team of researchers at the Massachusetts Institute of Technology has come up with a method to return heat back to the filament. Scientists themselves called this process "light utilization".
As thermal insulation, several layers of crystals were used, which act as mirrors that reflect infrared radiation, "returning" it back to heat the filament. As a result, the light becomes brighter. As one of the researchers, Marin Soliachich, stated:
"The system we have invented recycles energy that would otherwise be wasted."
The prototype light bulb created by scientists works 6% more efficiently than low-cost LEDs. According to the developers, in the future this figure can be increased to 40%.