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> Another way to do it is with phosphor coatings on the LED that absorb light of one wavelength and emit it at another wavelength. Lights known as phosphor-conv
by seanalltogether 7y ago
> Another way to do it is with phosphor coatings on the LED that absorb light of one wavelength and emit it at another wavelength. Lights known as phosphor-converted amber (PCA) shift all the light out of the blue and into the yellow part of the spectrum at the cost of some efficiency.
Is this essentially an LED filament bulb? I've replaced all lights in my house now with LED filaments because they look more natural and are omnidirectional.
- theatrus2 7y agoIt 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-line-datasheet-pdf https://www.lumileds.com/uploads/571/DS144-luxeon-c-color-li...