BTW has anyone considered adding a phosphor overcoat to an existing emitter?…
I know that Saabluster swapped phosphors. I believe it was hard.
I know that one other BLFer did paint overcoat. Much easier but could be substituted with a filter on the lens.
But a phosphor overcoat doesn’t sound that hard and may be more efficient than adding a filter.
ADDED:
F.e. start with Osram KB CSLNM1.14 (Blue Flat), add some Yuji or Nichia phosphor mixed with silicone…that’s it.