a system for space-time composition
Orbital Light Forms employs the mechanization of a manual light drawing technique (in the traditions of Visual Music, Expanded Cinema, and synesthetic experiment). It allows for automation, and provides controls for composition and performance as a visual-musical instrument. The device can be performed live or pre-composed, input through a light-to-sound transducer, or recorded through camera-less photography. It implements a computer system with control inputs, connected to a laser system with (x,y) axis and RGB color-space modulation, whose output is input into a “light modulator”, a geometric transformation of a narrow beam of light. In this case, it is a hand-blown glass sphere containing disc-shaped glass casts of tree bark, and other relief impressions. Two high-resolution motors rotate the sphere, as in a track-ball mouse sensor with reversed transfer of force, to spin the discs on two axis, as in spherical coordinates, along complex spatial curves. The effect is a smooth, dynamic orbit of the space of projections, as the laser beam channels through the convoluted lens; wild-streaming photons illuminate the shadows of an inner-space by magnification and inversion of 3-d surfaces.