If we are going to go into detail, then let's mention that the fact that you've matched the black-body line in the CIE color space does not mean that you've mat

If we are going to go into detail, then let's mention that the fact that you've matched the black-body line in the CIE color space does not mean that you've matched the black-body spectrum. Which means that you can have a light that looks "white" to an observer through a lampshade, but which distorts the colors of the surroundings (since nobody matches those to where they need to be in CIE 1931). This is exactly the problem with casual observation - "light looks the same" is not enough. Anyway, all I meant to say is that the smooth spectrum of incandescents is what people like to light their homes. It allows natural perception of colors of the surroundings. The high-tech approaches to getting there are a) not as good, b) expensive, c) not so good for the environment, once you add it all up. Now, for specialized applications, I am sure that LEDs are wonderful compared to complex filters on incandescents, but that's not the product we are looking at.