[Paper] Multiplication of Aerial Images Toward Four Directions Using Non-Parallel Beam Splitters in AIRR

Abstract

We propose the optical system using two infinity mirrors for aerial imaging in four directions to solve the limitation of display direction in multiple aerial imaging. With no physical contact, aerial images are expected to be an aerial guide that can be displayed directly in front of a person on the walkway. As an additional advantage, the aerial guide can be displayed in any fixed position, even in flowing water or on narrow passageways. Multiple aerial imaging techniques in multiple directions are expected to be used as aerial guides in these situations. From the simulations and the experiments, multiple aerial imaging in four directions was confirmed to be performed using the non-collinear beam splitter arrangement. Furthermore, high reflectance of the beam splitter increased the luminance of the aerial image. In addition, the use of surface reflections from retro-reflector was also found to improve the luminance of the aerial image.