What is the inconsistency here–could you elaborate?
Yes–adding a dome is, in a strange way, similar to drying up the water.
I wonder what would happen if you simply deposited the phosphor in powder form, without putting any sort of protective glass (719A) or silicone (Cree HI) or coating (Luminus SFT) or sintering (Osram W1). My hypothesis is that the phosphor would look lighter in color and the light will be higher CCT, just like having a dome.
Light interacts physically with material stuff, but behaves in a way contrary to many physical materials…with the phosphors/frequency filtering, the phosphors are intended to “alter” the blue or violet frequencies to other wavelengths with minimal losses…let’s call it passive modulation. I’ll also need to establish a distinction between the observed phosphor versus the emitted light CCT.
To reiterate about the phosphor pigmentation, correct me if I’m misunderstanding: The reason it appears more orange while dedomed is because the ambient light from outside the device is being “trapped” (i.e. more reflected) under the phosphor when the LED doesn’t have a dome to wick it away. When there IS a dome, even if a device’s reflector contrafocuses ambient light back onto the LED, the pigmentation doesn’t change much because the dome also takes that resultant light and wicks it away?
If so, the inconsistency may very well just be my misunderstanding, and this question pops up:
Just how much light does the dome actually wick away?
I imagine the effect would be similar to LEP. I had some experience disassembling some MR16 LED downlights before, and those in particular used a dual phosphor system: a large blue (COB-like) LED, a peripheral strip of CCT specific phosphor, then a lightly phosphor impregnated silicone diffuser under a beaded texture glass lens. As you might imagine, the warmer CCT used more orangey phosphor, it was a neat design.
**specific to your scenario, I have no idea…I imagine that there would be really bad scattering, and that the phosphor may degrade more quickly? I imagine that it’s one of the drawbacks to aftermarket “dedoming”.