US 11,947,139 B2
Aerial display apparatus
Yasuhiro Daiku, Tokyo (JP)
Assigned to TOPPAN PRINTING CO., LTD., Tokyo (JP)
Filed by TOPPAN PRINTING CO., LTD., Tokyo (JP)
Filed on Oct. 23, 2020, as Appl. No. 17/079,321.
Application 17/079,321 is a continuation of application No. PCT/JP2019/013796, filed on Mar. 28, 2019.
Claims priority of application No. 2018-083787 (JP), filed on Apr. 25, 2018.
Prior Publication US 2021/0041719 A1, Feb. 11, 2021
Int. Cl. G02B 5/124 (2006.01); G02B 5/00 (2006.01); G02B 5/08 (2006.01); G02B 30/56 (2020.01)
CPC G02B 5/124 (2013.01) [G02B 5/003 (2013.01); G02B 5/08 (2013.01); G02B 30/56 (2020.01)] 14 Claims
OG exemplary drawing
 
1. An aerial display apparatus comprising:
a display device which displays an image;
a mirror device which includes a plurality of optical elements each including two reflective surfaces that are orthogonally disposed, which reflects display light from the display device, and which forms an aerial image at a position that is plane-symmetrical to the display device; and
a light shielding member which is disposed on an optical path between the display device and the aerial image, which includes an opening that allows a portion of incident light to pass through, and which shields light incident on a region other than the opening,
wherein an area of the opening is smaller than an area of the mirror device.