Standard flat screen 3D displays such as 3D-televisions use parallax to replicate spatial effect within the plane. However, such types require wearing special glass-like equipment and both viewing angle and total number of viewers are very limited. Thus, the present paper proposes a new 3 dimensional display named “LuminantCube”, which is able to provide omnidirectional and auto-stereoscopic views. LuminantCube, consisted of a glass cuboid and a laser pico-projector, uses diffusion of lights projected from the projectors, caused within a volumetrically arranged micro voids processed numerously and randomly inside the glass. LuminantCube will be able to achieve high resolution and contrast ratio by optimizing the algorithm of converting projector pixel to display pixel for multiple projectors for the former and overlapping multiple light rays from multiple projectors for each individual micro voids for the latter.