I’m not sure if there’s a technical definition for wide-spectrum, but I was aiming for something like a normal CRI curve except a bit wider and flatter. So, more light high and low in the spectrum and less in the middle, for an effect similar to a vivid colors post-processing filter. I made it by mixing four Cree XM-L2 tints.
Unfortunately, pictures don’t really show the difference. Maybe I can get my spectrometer working eventually and show it in spectral form. I don’t have a way to calculate CRI or color temperature with it, though.