Space floating video display apparatus and light source apparatus
The present disclosure enables a space floating video having few ghosts to be obtained, and a space floating video apparatus suitable for inputting without causing fewer erroneous operations. The space floating video display apparatus includes: a display panel for displaying a video; a light source apparatus that supplies light of a specific polarization direction to the display panel; a retroreflection plate for reflecting video light from the display panel and displaying a space floating video of real image in air by means of the reflected light; and a light-shielding member that, among a plurality of space floating videos which are formed by the video light from the display panel, blocks a portion of the video light that is likely to form a space floating video other than desired space floating videos.
1 . A space floating video display apparatus comprising:
a display panel that displays a video;
a light source apparatus that supplies light in a specific polarization direction to the display panel;
a retroreflection plate that reflects the video light from the display panel and displays a space floating video as a real image in air by the reflected light;
a light-shielding member that blocks a video light capable of forming a space floating video other than a desired space floating video among a plurality of space floating videos capable of being formed by the video light from the display panel; and
a polarization separation member that reflects video light having a specific polarization from the display panel toward the retroreflection plate, wherein the light-shielding member is arranged between the display panel and the polarization separation member.
2 . The space floating video display apparatus according to claim 1 ,
wherein the light-shielding member has a frame shape surrounding a region through which a light flux of the video light forming the desired space floating video passes.
3 . The space floating video display apparatus according to claim 1 ,
wherein the light-shielding member includes a frame surrounding a region through which a light flux of video light forming the desired space floating video passes, and
a plurality of plate-shaped beams are arranged toward a region through which a light flux of video light forming the desired space video passes.
4 . The space floating video display apparatus according to claim 1 , wherein an inner diameter of the light-shielding member defines an area that is 110% or less of an area of a region through which a normal video light flux forming the desired space floating video passes.
5 . The space floating video display apparatus according to claim 4 , wherein the inner diameter of the light-shielding member defines an area that is 104% or less of the area of the region through which the normal video light flux passes.
6 . The space floating video display apparatus according to claim 1 , wherein the light source apparatus includes a light guide body and a light source, and an end face of the light guide body has a lens shape configured to convert a divergent light from the light source into a substantially parallel light flux.
7 . The space floating video display apparatus according to claim 1 , wherein the light source apparatus comprises an LED collimator having a conical-convex outer peripheral surface obtained by rotating a parabolic cross-section.
8 . The space floating video display apparatus according to claim 1 , further comprising an absorption type polarizer provided on a video display surface of the display panel.
9 . The space floating video display apparatus according to claim 1 , further comprising a transparent member through which the space floating video is displayed, wherein an absorption type polarizer is provided on a surface of the transparent member.
10 . The space floating video display apparatus according to claim 1 , wherein the retroreflection plate has a concave surface or a convex surface having a curvature radius of 200 mm or more.
11 . The space floating video display apparatus according to claim 1 , wherein a pitch of the retroreflection plate is set to a non-integral multiple of a pixel pitch of the display panel to suppress moiré.
12 . The space floating video display apparatus according to claim 1 , wherein the light source apparatus includes a reflective polarizer and a phase difference plate configured to convert a polarization of light reflected by the reflective polarizer to a specific polarization direction supplied to the display panel.
13 . A space floating video display apparatus comprising:
a display panel that displays a video;
a light source apparatus that supplies light in a specific polarization direction to the display panel;
a retroreflection plate that reflects the video light from the display panel and displays a space floating video as a real image in air by the reflected light;
a light-shielding member that blocks a video light capable of forming a space floating video other than a desired space floating video among a plurality of space floating videos capable of being formed by the video light from the display panel; and
a polarization separation member that reflects video light having a specific polarization from the display panel toward the retroreflection plate, wherein the light-shielding member is arranged between the polarization separation member and the retroreflection plate.
14 . The space floating video display apparatus according to claim 13 ,
wherein the light-shielding member has a frame shape surrounding a region through which a light flux of the video light forming the desired space floating video passes.
15 . The space floating video display apparatus according to claim 13 ,
wherein the light-shielding member includes a frame surrounding a region through which a light flux of video light forming the desired space floating video passes, and
a plurality of plate-shaped beams are arranged toward a region through which a light flux of video light forming the desired space video passes.
16 . The space floating video display apparatus according to claim 13 , wherein a distance between the light-shielding member and the retroreflection plate is 50% or less with respect to a distance between the retroreflection plate and the polarization separation member.
17 . The space floating video display apparatus according to claim 16 , wherein the distance between the light-shielding member and the retroreflection plate is 30% or less with respect to the distance between the retroreflection plate and the polarization separation member.
18 . A space floating video display apparatus comprising:
a display panel that displays a video;
a light source apparatus that supplies light in a specific polarization direction to the display panel;
a retroreflection plate that reflects the video light from the display panel and displays a space floating video as a real image in air by the reflected light;
a light-shielding member that blocks a video light capable of forming a space floating video other than a desired space floating video among a plurality of space floating videos capable of being formed by the video light from the display panel; and
a polarization separation member that reflects video light of a specific polarization from the display panel toward the retroreflection plate,
the light-shielding member comprises a plurality of light-shielding members, and the plurality of the light-shielding members include a light-shielding member arranged between the display panel and the polarization separation member, and the light-shielding member arranged between the polarization separation member and the retroreflection plate.
19 . The space floating video display apparatus according to claim 18 ,
wherein the light-shielding member has a frame shape surrounding a region through which a light flux of the video light forming the desired space floating video passes.
20 . The space floating video display apparatus according to claim 18 ,
wherein the light-shielding member includes a frame surrounding a region through which a light flux of video light forming the desired space floating video passes, and
a plurality of plate-shaped beams are arranged toward a region through which a light flux of video light forming the desired space video passes.