Dancing mirror light boxes
Aug. 2nd, 2008 10:51 amAfter going way hard-core the last couple of years, I'm taking it easy for this year's burning man. Thus I'm only doing a moderate-sized art project. A friend of mine asked me to create some interesting lighting for a dance/chill/meditation space complex she's designing.
I came up with the idea of creating a lamp that is surrounded by inward-facing mirrors so that light must bounce one or more times before exiting the box of mirrors. By appropriately shaping the exit holes, I can get multitudes of interesting patterns. The resulting light cast out seems to be equal parts geometry, fractal patterns, and randomness.
One of the constraints of the project was that the light pattern should have fivefold symmetry. This limited my choice of shapes. I settled on something akin to a five-sided pyramid with a truncated top, attached to an inverted mirror of itself at the bottom.
Here's what it looks like in the light:

On the inside:


And here's the light pattern it casts with various choices of exit hole:



These pictures are okay, but imagine that each little pattern copy moves in a different direction when you move the lightbulb. The results are hypnotic ... each pattern encircles the others in a luminous pentagonal square-dance.
Note that this is a 1/3 scale version with a very dim lamp. The real version is supposed to light up a 60ft dome, so I'll need a much brighter lamp, like this 750W monster: (This is me comparing its brightness against the brightness of the projectors it will be competing with.)


I came up with the idea of creating a lamp that is surrounded by inward-facing mirrors so that light must bounce one or more times before exiting the box of mirrors. By appropriately shaping the exit holes, I can get multitudes of interesting patterns. The resulting light cast out seems to be equal parts geometry, fractal patterns, and randomness.
One of the constraints of the project was that the light pattern should have fivefold symmetry. This limited my choice of shapes. I settled on something akin to a five-sided pyramid with a truncated top, attached to an inverted mirror of itself at the bottom.
Here's what it looks like in the light:

On the inside:


And here's the light pattern it casts with various choices of exit hole:



These pictures are okay, but imagine that each little pattern copy moves in a different direction when you move the lightbulb. The results are hypnotic ... each pattern encircles the others in a luminous pentagonal square-dance.
Note that this is a 1/3 scale version with a very dim lamp. The real version is supposed to light up a 60ft dome, so I'll need a much brighter lamp, like this 750W monster: (This is me comparing its brightness against the brightness of the projectors it will be competing with.)

