Re: "Hardware Store Tubes"

Ernst Dinkla wrote:

It is different for point light sources where a high CRI number is needed, replacing halogens, tungsten and CFLs with LED designs should be possible in time.

White LEDs based on blue + phosphor have an aging problem - they go green as the phosphor ages. White LED based on RGB are (by definition) three narrow band illuminants, and probably also change white point as they age (although this could be compensated for). Creating a high quality (ie. like sunlight) illuminant using LED's would seem to be non-trivial. Graeme Gill.