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theatrus2 | 6 years ago

It has nothing to do with filaments and is all with the phosphor coating. Standard white LEDs intentionally bleed the base blue LED through, whereas PCA LEDs do not.

Lumileds is the primary innovator for PCA (and other offshoots). https://www.lumileds.com/uploads/571/DS144-luxeon-c-color-li...

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