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What? Blue LEDs used to be the most expensive. Say $1 per in bulk vs 2 cents for red or green. Has that gone full circle?
by brianwawok 8y ago
What? Blue LEDs used to be the most expensive. Say $1 per in bulk vs 2 cents for red or green. Has that gone full circle?
- WorldMaker 8y agoThat is my understanding. Blue LEDs were last to be developed so they carried their R&D costs until more recently, but between efficiency breakthroughs and mass production improvements have passed through to being the cheapest to buy, especially in terms of lumens per dollar in places where you really need brightness such as traffic lights or overhead LED lighting in homes.