hmm, all these "white" things are just blue leds with yellowish phosphors, mabey, at that angle (out the side) the emitted light is passing through More phosphors.
like if you assume that the emitting thing is mostly flat, and has little original light bending compared to higher dome things, the phosphors are on top of the blue light output.
at that angle even if its not exciting the extra phosphors, it still is being "filtered" through them and they are yelowish.
so i would assume that side shooting light from it, is passing through more yellow
there is also the reflection off the dome itself, and the yellow phosphors are all high, so excited or filtered that location should have much more yellow comming out. also the phospors are being excited on the bottom, more than they are on the top (so to speak).
like the example of glow paint: if you hit a light shade covered in glow paint with light on the inside, the stuff on the inside puts out more light, even if it bleeds through to the other side.
any reflector or optic will send the side light foreward and probably blend it with the rest of the light, any "area" lighting useing it will blend with others needed to be an area light.
so it shouldnt be a problem ?
of course that is just speculation, but it sounds good eh
if it didnt hit phosphors , then it wouldnt be "efficient" at all, the more phosphors it hits, the more overall light it will put out, so blue ring, yellow ring, no ring, all would have some caveat of some type.
