The jig was up, however, when a researcher at another company read the paper and called Nichia to order some blue diodes.

Some experts are skeptical because hundreds of red, green and blue diodes would have to be combined for one bulb.

At night, the center of the avenue is decked with thousands of blue diodes.

A cluster of red, green, and blue diodes is driven together to form a full-color pixel, usually square in shape.

Others are experimenting with ways to mix red, blue and green diodes to create a white beam.

However, blue diodes (430 nm) have only been able to achieve maximum external quantum efficiencies in the range of 4% to 6%.

(Actually, with most sensors there are two green for each blue and red diodes.)

Faintly blinking blue diodes indicated that the vibration sensors were back online.

Many L.E.D. bulbs create white light by blending the output of separate red, green and blue diodes.

The Azeal's mix of red, green and blue diodes offer an infinite variety of colors.