P‐15.1: Projection Display Screen for Floating Signage Which Enables to Make Images Invisible from Back Side Using Light Control Technology

Abstract

Window decals are stickers that help catch the eyes of customers and look like floating images in the air because of the transparent glass window. But these graphic signs have defects. They are problems of mirrored imaging and still images. The authors are just wondering the following; Can't we change and animate the graphic image on the window? It is common knowledge that the drawing on the glass is always same. So let us make the window decals change and animate. This paper shows the one‐way observable projection display screen using light control technologies in order to avoid these defects. The authors proposed the unidirectional or one‐way observable window signage display in 2019. Our polarized light control mechanism for projection display is simpler than the case of the 2019 signage model. You can confirm that the light control technique realizes one‐way observable projection.