[13p-B415-1~14] 3.3 Information photonics and image engineering

[13p-B415-11] Aerial imaging in front of LED panel with retro-reflector with square-shaped holes

〇Daiki Nishimura¹, Masaki Yasugi^1,2, Hirotsugu Yamamoto^1,2 (1.Utsunomiya Univ., 2.JST, ACCEL)

Keywords:aerial imaging, retro-reflector, LED panel

In this paper, we proposed a new optical design of aerial LED signage over an LED panel. By attaching a retro-reflector in the non-light emitting area of the LED panel and installing a beam splitter in front of the LED panel, we succeeded in forming an aerial image into the plane symmetric position of the light source regarding the beam splitter. Moreover, to increase the visibility of the aerial image, we made the LED invisible from the front by inserting a polarizer and a reflective polarizer in a cross Nicol arrangement.