The SpectraBloom is a decorative color illuminator primarily designed for home use. It uses three ultra-bright colored LEDs to project light on any wall surface. When an object is placed between the lights and wall, the red, green, and blue LEDs cast an array of colored shadows.
The original SpectraBloom was built in 2004. It is an application of ultrabright LEDs, which have since become quite common.
I used a concept my father, Arthur Conrad, developed in the 1960's which he called a "Spectramobile". Arthur used three incandescent spot lamps with color filters - amber, green, and blue, aimed upward so the light converged on the ceiling as a white area. When a mobile was hung from the ceiling, wonderful colored patterns would appear. Heat from the lamps would rise and move the mobile so the colored shadow patterns would change.
I produced a few SpectraBlooms like the one shown here, but they are no longer available.
A few years ago the concept was picked up by Will Schorre. After many revisions and much refinement, he has produced an elegant design with added features of color-fading.
Click to visit Will Schorre's SpectraBloom site.