On an Improvement of the Stability of a Spatial Mist Screen Employed a Fan without Blades in the Display of the Projected Holographic Images

Abstract

Electro-holography equipped with a spatial light modulator (SLM) is considered to be an important basic technique for 3D display system. However, the resolving power of ordinary SLM seems to be very low, and so it looks very difficult to satisfy the space-bandwidth product (SBP) condition. It is unfavorable since the values of the size and the viewing angle of the reproduced images are known to be restricted. In these processes, since we have jetted out the scatterer into the space directly, fluctuation reducing process of the screen has come to be an important problem. In this paper, we shall report that, to improve the stability of the mist screen, a spatial screen employed a bladeless fan (without blades) is introduced. As this result, we confirmed that a performance of highly bright projected images is carried out by this new system, and the effective display area is exactly enlarged.