公开(公告)号：US20180164671A1

公开(公告)日：2018-06-14

申请号：US15735373

申请日：2016-05-13

Applicant: KONICA MINOLTA, INC.

Inventor： Masaya KINOSHITA ,  Hirohisa KITANO ,  Makoto JIN ,  Shuji IKENAGA

IPC: G03B21/28 ,  G03B21/60

CPC classification number: G03B21/28 ,  G02B5/02 ,  G02B5/08 ,  G02B17/006 ,  G02B27/22 ,  G02B27/2292 ,  G03B21/14 ,  G03B21/60

Abstract: This aerial image display device is provided with an optical plate having a plurality of reflective surfaces orthogonal to each other in plan view, a projection device, a specular mirror, and a screen. The mirror includes a counter mirror disposed spaced apart from the optical plate at the opposite side of a focused image M across the optical plate. The projection device and the screen sandwich a light path between the counter mirror and the optical plate at the opposite side of the focused image (M) across the optical plate. The projection light emitted from the projection device is incident on the screen after reflecting from the counter mirror, and then incident on the optical plate after reflecting from the screen and then from the same counter mirror.