Well, I hate to hijack this thread....but here goes /ubbthreads/images/graemlins/tongue.gif
I projected the image of several colors/styles of luxeons through a set of macro lenses. I've been thinking about doing this for a while, to give us the idea of how a reflector might "see" the luxeon. So, for each of these, I've done a shot from straight forward, and one from about 45 degrees off axis.
First, a 1W Red-Orange
A 1W White HD
A 5W White HD
The 1W high dome lens doesn't distort the image of the die at an angle, but the 5W die is distorted by the HD lens...this is probably an optical effect due to the size of the 5W die compared to the HD lens.
A 1W Royal Blue LD
Finally, a 5W Royal Blue SE, the side shot is taken from about 80 degrees off-axis
Of particular interest is the SE - you can see the different light sources that the reflector "sees", as well as the distortion due to the cone portion of the lens when viewed from straight on.