Aerial image imaging control method in aerial image display device, trading device, and aerial image display device

摘要

PROBLEM TO BE SOLVED: To secure the visibility of a user while protecting confidential information such as a displayed personal identification number in an aerial image display device. An aerial image display device (1) includes a display unit main body (3), an aerial imaging mechanism (2), and a moving mechanism (7). The display unit main body 3 displays an image. The aerial imaging mechanism 2 is composed of a retroreflective unit 5 having a retroreflective material 16 and a beam splitter 6, and the image displayed on the display unit 3 is split by the beam splitter 6 and the retroreflective unit 5. It is imaged as an aerial image by projecting it into space. The moving mechanism 7 moves the retroreflective material 16 with respect to the beam splitter 6. [Selection diagram] Fig. 1