Not really, no, because researchers at Cambridge University have developed a light bulb that uses light emitting diodes.
They each used light emitting diodes (LED) as the light source (See Figure 1).
Using "light emitting diodes … powered by energy generated by the wind turbine," the patent application suggests, could create "an image on the blades" that "may include, but are not limited to, pictures, text, symbols, numbers, the date and time, weather forecasts, traffic information, and advertising".
Luminex is a fabric with fibre-optic strands woven into it, which are then illuminated using light-emitting diodes powered by a small battery pack.
Laser & LED hybrid light source that enables mercury-free, high-brightness projection High-brightness projection is achieved without using a high-pressure mercury lamp by using blue light emitted by a blue laser, green light converted from blue laser light with a fluorescent element, and light emitted by a high-lumen red LED through a DLP® chip onto the screen.
The prepard mixture was used to fabricate Au/PEG-DA hydrogels by using the UV light emitting diode (CBT-90-ultraviolet-C31-M400-22, Luminus Devices; 8 W and 365 nm) for 3 min to initiate photo-polymerization.
The immunoreactive bands were stained using a light emitting nonradioactive method (ECL; Millipore).
Instead, the two technologies may end up being used together: Wi-Fi as the uplink, and FSO for the much faster downlink.The long-term hope is to transmit data using visible light emitted by indoor lighting.
In fact, they spent the past six months in a studio on the ninety-first floor of the World Trade Center's north tower, developing a "bioluminescent beacon," a light sculpture (using the light emitted by single-celled organisms, such as plankton) that was to be installed next year on the tower's radio antenna.
