JP2017151283A - Video display device and video display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To present an image floating in the air with a high presence at an appropriate depth position without distortion.SOLUTION: A half mirror 12 is arranged between a display surface 11 that displays a video and an observer 3 of the video. This makes a frame of the display surface 11 with a relatively low luminance inconspicuous when seen from the observer 3, and thereby the video with a relatively high luminance is seen as floating. That is, since a stereoscopic effect of the video is not cancelled by the frame of the display surface 11, an image floating in the air can be presented at an appropriate depth position without distortion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for displaying an image.

  As a technique for easily displaying a pseudo 3D image, Patent Document 1 discloses a method of floating and displaying a rear image using a mirror array. Patent Document 2 discloses a method of displaying a pseudo 3D image by stacking a plurality of display surfaces.

International Publication No. 2007/116663 Japanese Patent No. 3022558

  However, since the above-described floating image / pseudo 3D image is displayed by being overlapped at a distance close to the optical elements constituting the mirror array as viewed from the observer of the image or displayed between the stacked display surfaces, A problem that the stereoscopic effect is dragged to the optical element or the frame of the display surface and cannot be displayed at the intended original depth position, or the presence as if a real object is distorted and cannot be presented correctly. was there.

  The present invention has been made in view of the above circumstances, and an object thereof is to present an image having a high presence floating in the air without distortion at an appropriate depth position.

  In order to solve the above problems, an image display device according to claim 1 includes a display surface for displaying an image, and a half mirror disposed between the display surface and an observer of the image. The gist.

  The video display device according to a second aspect is the video display device according to the first aspect, wherein the display surface is in close contact with a back surface of the half mirror.

  A video display device according to a third aspect is the video display device according to the first aspect, wherein the display surface is a curved surface.

  The video display device according to claim 4 is the video display device according to claim 1 or 3, wherein the display surface is separated from the half mirror by the same distance as a distance between the half mirror and the observer. The gist is that it is arranged.

  A video display device according to a fifth aspect is the video display device according to the first, second, or fourth aspect, wherein the display surface is a display surface capable of displaying the video in 3D.

  The video display device according to claim 6 is the video display device according to claim 1, 2, or 4, wherein the display surface has a plurality of display surfaces that display the same video, and different depth positions as viewed from the observer. The gist of the present invention is to have a configuration arranged respectively.

  The video display device according to claim 7 is the video display device according to any one of claims 1 to 6, wherein the half mirror is disposed at an angle at which the observer can see a virtual image of the viewer. Is the gist.

  A video display device according to an eighth aspect is the video display device according to any one of the first to seventh aspects, wherein the half mirror has a size larger than the display surface.

  The gist of the video display method according to claim 9 is that in the video display method for displaying video, a half mirror is arranged between a display surface for displaying video and an observer of the video.

  According to the present invention, it is possible to present an image with a high presence floating in the air without distortion at an appropriate depth position.

It is a figure which shows schematic structure of the video display apparatus concerning 1st Embodiment. It is a reference figure at the time of explaining the operation effect of a half mirror. It is a figure which shows schematic structure of the video display apparatus concerning 2nd Embodiment. It is a figure which shows schematic structure of the video display apparatus which concerns on 3rd Embodiment. It is a figure which shows schematic structure of the video display apparatus which concerns on 4th Embodiment.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a diagram showing a schematic configuration of a video display apparatus according to the first embodiment. The video display device 1 includes a display surface 11 for displaying a video, a half mirror 12 disposed between the display surface 11 and the video viewer 3, and a control unit 13 for adjusting the display brightness of the video. It is prepared for. The observer 3 observes the display surface 11 of the display through the half mirror 12 having transmission and reflection functions.

  Usually, when observing the image displayed on the display surface 11 of the display, the frame of the display itself surrounds the periphery of the image, so that the image is attached to the surface of the display rather than being there. Looks like it is drawn. In addition, there is a method of projecting images on semi-transparent glass, but it is difficult to visually perceive the edge of the glass (frame) due to the difference in refractive index between glass and air no matter how high the transparency is. Yes, it looks the same as a normal display.

  Therefore, in the configuration of FIG. 1, the half mirror 12 is arranged on the viewer side from the display surface 11 of the display. Here, the half mirror 12 has a function of reflecting a part of incident light and transmitting a part of the light, and when arranged between different brightnesses, a part of the light from the bright side is reflected. It looks like a mirror from the bright side, and it looks like a translucent glass from the dark side by passing part of it. Therefore, as shown in FIG. 2, only the high-luminance video displayed on the video unit 111 of the display surface 11 can be seen by the observer 3, and the low-luminance display frame 112 itself is a half mirror from the observer 3. 12, the amount of light on the image side is attenuated, making it difficult to see, and the displayed image looks as if it is floating in the air.

  Of course, the brightness of the image itself is similarly attenuated by the reflectance and transmittance of the half mirror 12, but the control unit 13 increases the display brightness of the image. Specifically, the brightness of the image displayed on the display and the frame of the display itself is increased. By changing the luminance ratio, the light amount on the image side can be transmitted more advantageously, and the light amount of the frame can be made inconspicuous. In particular, by using the half mirror 12 having a high reflectance, this effect can be obtained more remarkably. This is particularly noticeable when the luminance of the video is high and when the brightness of the surroundings of the video side is lower than that of the viewer.

  Further, in this configuration, the external light incident on the surface of the display surface 11 can be reduced as the display surface 11 is as close to the half mirror 12 as possible. This is because the amount of transmitted light is attenuated by the reflectance of the half mirror 12 in the case of the external light incident through the half mirror 12 as compared with the external light from the surroundings not through the half mirror 12. As a result, the closer the display surface 11 is to the half mirror 12, the less diffuse reflection on the surface of the display surface 11 and the higher the image contrast. The effect is higher when the display surface 11 is in close contact with the back surface of the half mirror 12.

  As described above, according to the present embodiment, the half mirror 12 is disposed between the display surface 11 that displays the image and the viewer 3 of the image, that is, the display surface 11 is disposed behind the half mirror 12. Therefore, it becomes difficult to see the frame of the display surface 11 having a relatively low luminance when viewed from the viewer 3, so that the image looks as if a relatively high luminance image is floating in the air. That is, since the stereoscopic effect is not dragged to the frame of the display surface 11, an image floating in the air (for example, a 2D image, a pseudo 3D image, a 3D image) without wearing a special device such as 3D glasses. Can be presented at an appropriate depth position without distortion.

  The half mirror refers to a mirror that reflects and transmits at a certain ratio, and does not necessarily refer to only a mirror having the same reflectance and transmittance. It is synonymous also about the half mirror described in the claim.

<Second Embodiment>
FIG. 3 is a diagram illustrating a schematic configuration of a video display apparatus according to the second embodiment. In this configuration, a curved display surface 11 is arranged behind the half mirror 12. The other configuration is the same as that of the first embodiment.

  When an image is simply displayed on the curved display surface 11, the surface of the display surface itself and a frame surrounding the surface (the image unit 111 and the frame 112 in FIG. 2) can be seen by an observer. This is because, as already described, even when a transparent body such as glass is used, the frame is easily perceived by the observer due to the difference in refractive index between air and glass.

  On the other hand, in the present configuration shown in FIG. 3, the curved display surface 11 is arranged behind the half mirror 12 to make it difficult to perceive the frame of the display surface 11 and to perceive an image. The same effect as that of the embodiment can be obtained. Furthermore, since the display surface 11 is a curved surface, even when a normal 2D image is projected, an image in which the center protrudes forward when viewed from the observer 3 is displayed, so that a simple pseudo 3D image is presented. be able to. In addition, although demonstrated using the curved surface which curved only in one direction as an example of a curved surface here, the same effect arises also in the curved surface in a three-dimensional direction like a spherical surface.

  Of course, even in the case of a normal curved display that does not use the half mirror 12, a projected image can be seen, but it is a so-called 2D image curve in which a flat surface having a curvature is curved due to the effect of the frame. It is obvious, and it is difficult to perceive as a stereoscopic 3D image especially when the viewing distance is short.

  As described above, according to the present embodiment, since the curved display surface 11 is arranged behind the half mirror 12, an image that floats in the air without the observer 3 observing the frame of the display surface 11 can be obtained with an appropriate depth. Since the display surface 11 is a curved surface while obtaining the same effect as that of the first embodiment that can be presented without distortion at the position, the center protrudes toward the front as viewed from the observer 3. A realistic pseudo 3D image can be presented.

<Third Embodiment>
FIG. 4 is a diagram showing a schematic configuration of a video display apparatus according to the third embodiment. In this configuration, the display surface 11 is arranged behind the half mirror 12 by the same distance as the distance between the half mirror 12 and the viewer 3 in the back of the half mirror 12. The other configuration is the same as that of the first embodiment.

  In this configuration, the virtual image 3 ′ of the observer 3 is reflected at the same depth position as the display surface 11 due to the reflection of the half mirror 12. As a result, when viewed from the viewer 3, the image (image) on the display screen 11 floats and is displayed behind the viewer 3 in the half mirror 12 and in the surrounding environment as if it is next to him. Is done. For example, when a partner such as a videophone is displayed as an image on the display surface 11, there is an effect that the partner is perceived as if the partner is in the same space as himself.

  Needless to say, if the display surface 11 is a curved surface as shown in FIG. Furthermore, when a 3D display capable of displaying 3D images is used as the display surface 11, it is possible to display realistically as if the actual object is in the vicinity of the observer 3 through the half mirror 12.

  As described above, according to the present embodiment, the display surface 11 is disposed behind the half mirror 12 by being separated from the half mirror 12 by the same distance as the distance between the half mirror 12 and the viewer 3. The virtual image 3 ′ of the observer 3 is reflected at the same depth position as the display surface 11 by reflection of the half mirror 12 while obtaining the same effect as that of the first embodiment. The images can be presented side by side at the same distance, and a further presence and a sense of unity with your space can be produced.

<Fourth embodiment>
FIG. 5 is a diagram showing a schematic configuration of a video display apparatus according to the fourth embodiment. In this configuration, two display surfaces 11 a and 11 b having the same display function as the conventional display surface 11 are arranged behind the half mirror 12 at different depth positions as viewed from the observer 3. The other configuration is the same as that of the first embodiment.

  The stacked 3D display method disclosed in Patent Document 2 shows a method of displaying a 3D image by stacking a plurality of display surfaces in the depth direction when viewed from an observer. This is because an image (image) having the same shape is displayed on two display screens arranged at different positions in the depth direction, and the ratio of the display brightness of each display screen is changed, so that an arbitrary between two front and rear display screens can be obtained. This is a method for causing an image to be perceived at the position. However, in this method, since a physical display surface always exists before and after the 3D image to be displayed, the image is inevitably displayed in a tunnel of a plurality of frames of the display forming the display surface, which is uncomfortable. Become a statue.

  On the other hand, in the configuration of FIG. 5, by arranging the laminated display surface behind the half mirror 12, the display frame around the image to be reproduced is perceptually eliminated, and only the image floats in the space. And a realistic 3D image with an overwhelmingly high presence can be reproduced. In addition, since the image is reproduced without perceiving the position of the physical display surface, the depth is larger than the original image depth amount, including a synergistic effect with human senses that cannot perceive the physical depth amount. We can expect effect to let you feel. In addition, although it demonstrated using only two display surfaces before and behind as an example of a several display surface here, the same effect arises also when there are three or more display surfaces.

  Further, the half mirror 12 is displayed as described above by arranging it at an angle at which the observer himself / herself reflects on the half mirror as viewed from the observer 3, that is, at an angle at which the observer 3 can observe his / her virtual image. You can make the image feel like it exists together in your space. On the other hand, when the half mirror 12 is arranged at another angle, the image is reproduced as if it were floating alone in the space.

  As described above, according to the present embodiment, the two display surfaces 11a and 11b that display the same video are arranged behind the half mirror 12 at different depth positions as viewed from the observer 3, so that the first While obtaining the same effects as those of the embodiment, a pseudo 3D image displayed between two display surfaces can be presented in a floating state without being aware of the frames of the plurality of display surfaces.

  Finally, the half mirror is designed to prevent the viewer from perceiving the frame of the display surface placed behind it or the position of the display surface itself, so it is much larger than the size of the back display surface, In other words, it is important to increase the vertical and horizontal widths relative to the display surface so that the viewer does not perceive the position and size of the half mirror.

  The contents of the present invention have been described above according to the embodiments. However, the present invention is not limited to these descriptions, and various modifications and improvements can be made. Specifically, as a video display method for displaying video, a half mirror may be arranged between a display surface for displaying video and an observer of the video.

DESCRIPTION OF SYMBOLS 1 ... Video display apparatus 11, 11a, 11b ... Display surface 111 ... Video part 112 ... Frame 12 ... Half mirror 13 ... Control part 3 ... Observer 3 '... Virtual image

Claims (9)

A display surface for displaying images;
A half mirror disposed between the display surface and the viewer of the image;
A video display device comprising: The display surface is
The video display device according to claim 1, wherein the video mirror is in close contact with a back surface of the half mirror. The display surface is
The video display device according to claim 1, wherein the video display device is a curved surface. The display surface is
4. The video display device according to claim 1, wherein the video display device is disposed apart from the half mirror by the same distance as the distance between the half mirror and the observer. 5. The display surface is
The video display device according to claim 1, wherein the video is a display surface capable of 3D display. The display surface is
5. The video display device according to claim 1, further comprising: a plurality of display surfaces that display the same video, each being disposed at a different depth position as viewed from the observer. The half mirror is
The video display device according to claim 1, wherein the video display device is arranged at an angle at which the observer can see a virtual image of the viewer. The half mirror is
The video display device according to claim 1, wherein the video display device has a size larger than the display surface. In a video display method for displaying video,
An image display method, comprising: arranging a half mirror between a display surface for displaying an image and an observer of the image.

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