The LED industry may well have its share of mad scientists. But most people working on solid-state lighting solutions have a simple aim: to produce better LED light bulbs. And the last few years have seen LED scientists make one breakthrough after another.
Amber LED light bulbs are a good example. In 2009, scientists realised amber LED light bulbs were good but didn’t produce enough light. The amber colour could also fade after long use.
These realisations were important because of amber LED light bulbs’ popularity. They appeared in warning beacons, vehicle turning signals, traffic lights and architectural lighting.
So the LED scientists set targets. They wanted new amber LED light bulbs to have at least twice as much light output than before, and to have a stable amber colour. They also needed them to be:
- Cheaper to make
- Longer lasting
- Smaller
These were ambitious goals. Nonetheless, the LED boffins set to work.
LED development
At this point, matters became complex. The scientists brought a lot of technology to bear on the amber LED light bulbs project. This included phosphor conversion, computer simulation of colour structures, and electrical performance tests.
Finished LED product
Nonetheless, the scientists prevailed. The new amber LED light bulbs met the targets. The next step was to ensure compliance with government and industry regulations.
LED compliance
LED light bulbs must meet the Restriction of Hazardous Substances (RoHS) Directive. This limits the use of six hazardous materials during the manufacturing process of electrical and electronic equipment. This meant the amber LED light bulbs had to have lead-free reflow solder.
The amber LED light bulbs also had to be moisture resistant. This resistance is in accordance with Joint Electron Device Engineering Council (JEDEC) standards. Finally, the amber LED light bulbs had to be good enough for Underwriters Laboratories (UL) safety certification.
The amber LED light bulbs complied with every regulation. They are now in use throughout a number of industries, and provide long-lasting, consistent, cheap-to-run light.
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