In this apparatus, optical reactions are triggered by irradiating sheets covered with special types of paint with laser beams, and thus creating visual images on a principle completely different from such optical devices as monitors and projectors. The work is composed of "fade out - phosphorescence", using phosphorescent paint, and "fade out - photochromic", using paint that contains an organic photochromic compound to produce colors in response to light.
Terminals for taking visitors' portrait photos are set up at the exhibition venue. The brightness of these photographs is analyzed, and based of these values, images are painted onto the sheets by way of laser beams. Through these images realized on a principle much different from familiar optical devices, the visitor senses the presence of the "matter of light" that we are largely unaware of in daily life.