[19a-Z28-1~9] 3.3 Information photonics and image engineering

[19a-Z28-3] Enlargement of aerial image projected by a system using polarization grating

〇Kouya Yamada¹, Moritugu Sakamoto¹, Kohei Noda¹, Tomoyuki Sasaki¹, Yoshichika Tanaka², Takeya Sakai², Yukitoshi Hattori², Nobuhiro Kawatuki³, Hiroshi Ono¹ (1.Nagaoka Univ. of Technol., 2.Hayashi Telempu Corp., 3.Univ. of Hyogo)

Keywords:aerial image, polarization diffractive element

In recent years, aerial images have been attracting attention as the next-generation industry for displays. Last time, we proposed a new aerial image display optical system using a right-angle prism, a polarizing diffraction grating, and a retrospective mirror. In principle, this method can form an aerial image with 100% efficiency. This time, we introduced a new polarized Fresnel lens to magnify the image formed by this method, and investigated the relationship between the image magnification and the viewing angle.