4 ms·
My understanding is that it's not so much a filter as a retransmitter layer. The LEDs give off a rather small spectrum of light that's quite harsh and the yell
by bradfa 15y ago
My understanding is that it's not so much a filter as a retransmitter layer. The LEDs give off a rather small spectrum of light that's quite harsh and the yellow "filter" takes that energy in and fluoresces out of a wide variety of wavelengths of light that are much more pleasant. There's most certainly a loss of energy because of the conversion, but it's not filtering out wavelengths like normal light filters do.
- nollidge 15y agoThis is similar to what fluorescent lights do. If you've ever broken a fluorescent bulb, you'll notice a powdery coating on the inside of the glass, which is the phosphor coating that actually absorbs the violet/ultra-violet light of the excited mercury vapor and then re-emits it as visible light.