High Performance Materials

Nanodispersion Technology

Nanodispersion allows us to create products with enhanced functionality, using films with nanomaterials dispersed within them in three dimensions. Nanodispersion is one of our company's core technologies, and was used to create the transparent screen film we call KALEIDO SCREEN.
This technology allowed us to increase the transparency of our transparent screen films to 90% (highest in the world), up from the previous standard of around 70%. We were thus able to develop a transparent screen film that is virtually colorless and transparent (Fig. 1).

Fig. 1 - Projection mapping event (at Abeno Harukas)
(Left: No performance during daylight hours. Right: Performance at night)

Principle behind Transparent Screens

To be transparent, light must be able to pass through the screen. But if the screen is simply transparent, projected images will be all but invisible. For a projected image to show up clearly, the screen has to scatter the light. The problem is that light-scattering leads to a loss of transparency. Fortunately, these two conflicting functions can be achieved simultaneously using nanodispersion technology.

KALEIDO SCREEN is able to function as a screen because light-scattering particles dispersed in the light diffusion layer scatter the light from the projector (Fig. 2). There are three basic types of light-scattering: Geometric scattering, Mie scattering, and Rayleigh scattering. The particles used in our projection screens are designed to produce Mie scattering, because it allows us to create a screen with outstanding color reproduction. We've also worked to find the optimal balance between the light-scattering strength and light distribution (Fig. 3).

Fig. 2 - Projection diagram
Fig. 3 - Strength of Mie light-scattering