Is it feasible for the Bayer mask to be swapped out as an aftermarket change on a modern digital sensor? Or does that require clean room manufacturing processes to repackage it?
I had a similar thought. Imagine a custom camera body to add a beam splitter for parallel sensors much like the original process with parallel film. One regular RGB sensor for the visible scene, and one monochromatic sensor for the narrow background spectrum.
But, I have no idea if the beam path could be devised to do this with commodity sensors and lenses, to minimize what must be bespoke.
You would have to adapt DSLR bodies for this because they already have a beam splitter (some old Sony/Minolta DSLRs had fixed mirrors, even)
New mirrorless designs and cinema cameras would have a hard time with this.
It would be easier to do what Fuji used to do: have four sensor sites, but instead of RGBW have RGBX where X is filtered to your wavelength, even then, demosaicing would create artifacts (like how you can get 10MP out of an old Nikon D1 but sharp edges are jaggy because the demosaic isn't uniform.
I had a similar thought. Imagine a custom camera body to add a beam splitter for parallel sensors much like the original process with parallel film. One regular RGB sensor for the visible scene, and one monochromatic sensor for the narrow background spectrum.
But, I have no idea if the beam path could be devised to do this with commodity sensors and lenses, to minimize what must be bespoke.