JP2008175960A - Multi-screen display device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projected image that provides a sense of realism without any sense of incongruity when viewed from an observer seat 101 even when a multi-screen screen image projection device is installed in a limited space.
Mirrors 131 to 135 are provided between the projector and the screen so that the distance from the projectors 121 to 125 is the same as the distance from the observer seat 101 to the screens 111 to 115. Is installed. Accordingly, even when the screens 112 to 114 are moved in the direction of the observer seat due to the problem of the installation space and the screens 112 b to 114 b are used, the distance from the projectors 122 to 124 to the screens 112 b to 114 b and the observer seat The distance from the screen 101 to the screens 112b to 114b changes at the same time, the matching relationship is not broken, and there is no overlap or gap with the image projected on the adjacent screen surface, creating a continuous virtual reality space without distortion. be able to.
[Selection] Figure 1

Description

  The present invention relates to a multi-screen display apparatus and method for obtaining a wide range of projected images using a plurality of projection apparatuses as scene drawing means for experiencing virtual reality.

  Conventionally, in an apparatus that projects an image on a plurality of screens using a plurality of projection apparatuses, the distances between the screens and the projection apparatuses are all equal and are installed rotationally symmetrically with respect to the observer seat.

  In the installation of the projection apparatus, it is impossible to install a plurality of units at the same position because of the installation space. Therefore, an installation method has been adopted in which the optical paths cross each other.

  As can be seen in Patent Document 1, in order to reduce the installation space, there is a technique in which a mirror is installed between the projection device and the screen to reduce the total installation area.

  Further, Patent Document 2 proposes a positional relationship between a plurality of projectors that compensate for image distortion, a display area on a non-planar screen, and a viewer's seat even on a non-planar screen.

JP 2002-148711 A JP 2004-282711 A

  However, in the case of Patent Document 1, it is a wide viewing angle video display device by one projection display unit composed of one projection device and one screen, and a multi-view screen that realizes a wide viewing angle video by combining a plurality of projection display units. The problem with the display device is not mentioned. That is, there is a big problem in how to arrange a plurality of projection devices that connect a plurality of screens to form a multi-surface wide viewing angle video screen and project the images onto the plurality of screens.

  In Patent Document 2, the distance between the screen and the observer's seat is different from the distance between the projector and the screen, and the geometric grounding position between the screen and the projector is strictly calculated, and it must be installed without error. Must not.

  Furthermore, in a multi-screen display device in which a plurality of projection display units are combined, there may be a situation in which some screens can be installed only at positions close to the observer's seat side due to restrictions on the size of the installation venue. . In such a case, the image projected on the adjacent screen is simply blocked by the screen brought closer to the observer's seat side and the images from the two projectors overlap. In addition, some images are reduced by bringing some screens close to each other, and continuity with images on other screens is interrupted. As a result, there has been a problem that it is impossible to generate a video that realizes virtual reality.

  The purpose of the present invention is to realize images with virtual reality even in places where the installation area is limited, such as installation in exhibition halls, installation in special halls, placement in existing facilities, etc. It is to provide a screen display device and method.

  In one aspect of the present invention, in a multi-plane screen display device in which a plurality of projection display units each including a projection device and a screen are combined, a reflecting mirror is provided between the projection device and the screen in at least one projection display unit. The projection device, the screen, the reflecting mirror, and the observer's seat are arranged so that the image light projected from the projector is emitted from substantially the same point.

  Specifically, the projection device, the screen, the reflecting mirror, and the observer seat are arranged so that light of an image projected from each projection device is emitted from or near the observer seat. To do.

  In a preferred embodiment of the present invention, in a multi-plane screen display device in which a plurality of projection display units each composed of a projection device and a screen are combined, a reflecting mirror is provided between the projection device and the screen in at least one projection display unit, Arranging the projection device, the screen, the reflecting mirror, and the observer seat so that the distance between the projection device and the screen in the projection display unit and the distance between the observer seat and the screen are substantially the same. It is characterized by.

  According to another aspect of the present invention, in a multi-plane screen display device in which a plurality of projection display units each composed of a projection device and a screen are combined, a reflecting mirror disposed between the projection device and the screen of at least one projection display unit. In addition, an observer seat is arranged at the position of the virtual image of the projection device by the reflecting mirror, and a half mirror is provided which allows the screen to be seen from the observer seat.

  According to a preferred embodiment of the present invention, it is possible to create a continuous virtual reality space without distortion even if the screen shape cannot be a regular polygon shape.

  In addition, in a desirable embodiment of the present invention which is substantially equivalent to the case where the projection device is arranged at the observer's seat, there is an effect that the projection device can be installed without worrying about the unevenness and accurate arrangement of the screen.

  Hereinafter, a multi-screen display device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 3 is a plan view showing an example of a multi-screen display device. A multi-sided screen 311 to 315 is installed around the observer seat 301 so as to surround it. Projectors 321 to 325 are arranged on the straight line connecting the center in the width direction of the screen and the observer seat 301 so as to be equidistant from the corresponding screens 311 to 315, respectively. In this state, the images projected on the screens 311 to 315 do not overlap each other, and are connected to the images projected on the adjacent screens at the left and right ends of each screen, thereby displaying a continuous image. In this way, it is possible to obtain an image sensation as if the observer seat 301 was immersed in the world projected on the screens 311 to 315 on the screen surrounding the observer seat 301.

  However, this system requires a wide space, and it is necessary to make all the distances between the projectors 321 to 325 and the screens 311 to 315 equal. Therefore, in order to install in a rectangular space, a rectangular short side It must be installed in a square area with one side. The size of the screen image is limited by the limitation on the size of the image when the lens system of the projectors 321 to 325 is set to the maximum wide angle and the screen polygon shape that fits in the square area.

  For example, there is a desire to obtain a high immersive feeling with a large screen image by making maximum use of a limited installation space. Considering this space restriction, as shown in the figure, consider an image when the screen 313 must be installed at a position 313b. The image from the projection device 323 is projected on the entire screen 313b after movement. In this case, the image of the projection device 324 is blocked by the screen 313b, and the image of the portion 314a of the screen 314 is reflected on one end of the screen 313b. Similarly, the image of the projection device 322 is also blocked by the screen 313b, and the image of the portion 312a of the screen 312 is also lost and appears on the other end of the screen 313b. At both ends of the screen 313b, there are portions where the images from the two projectors overlap each other, and it is not possible to reproduce the image for providing virtual reality.

  FIG. 1 is a plan view showing a device arrangement of a multi-screen display device according to an embodiment of the present invention. The multi-sided screens 111 to 115 are installed around the observer seat 101 so as to surround it. These screens 111 to 115 are arranged in the same manner as in FIG. 3, and are arranged on a polygon centered on the observer seat 101. Different from FIG. 3, the projectors 121 to 125 are arranged to project images on the screens 111 to 115 after being reflected by the mirrors 131 to 135 once. The mirrors 131 to 135 are arranged such that, when these mirrors are not provided, the same image as that obtained when the projectors 121 to 125 are placed at the position of the observer seat 101 can be projected using the mirror. ing. That is, the mirrors 131 to 135 and the projection device 121 are positioned so that the distance L1 from each mirror 131 to 135 to the observer seat 101 and the distance L2 from each mirror 131 to 135 to each projection device 121 to 125 are equal. -125 are arranged. From the projection device, an image with left and right reversed is projected.

  In this way, the projection mirror is provided between the projection device and the screen in at least one projection display unit, and the projection is performed so that the image light projected from each projection device is emitted from substantially the same point. Arrange equipment, screen, reflector, and observer seat.

  In this way, the light from the projector to the screen is formed into a screen shape by using the zoom function of the projector so as to capture images that depict continuous landscapes on the surrounding screens 111 to 115. Match.

  By doing so, a virtual reality space surrounding the observer seat 101 can be created.

  Here, consider a case where the rectangular installation space 140 is utilized to the maximum to obtain a high immersive feeling with a large screen image. As shown in the drawing, the screen 113 in the square area is reduced and installed as the screen 113b at the center of the long side of the rectangular installation space 140. At the same time, the adjacent screens 112 and 114 are also reduced and arranged in the installation space 140 as the screens 112b and 114b, respectively. At this time, since the distance between the screen and the projection device is shortened, the size of the screen is reduced by the amount that the image projected on the screen is reduced, so that the image by another adjacent projection device is not captured.

  In this case, the images from the projection devices 122 to 124 are respectively projected on the entire surfaces of the screens 112b to 114b after the reduction movement, and the images from the adjacent projection devices do not overlap each other as shown in FIG. Continuity is maintained. Therefore, even after the screens 112 to 114 are moved to 112b to 114b, the virtual reality space seen from the observer's seat 101 does not fail and can maintain a continuous landscape state.

  As described above, the image light from each projection device to each screen has portions that intersect each other in the case of FIG. 3 described above, whereas in the case of the embodiment of FIG. You can see that there is no part to do. Images that draw landscapes that are continuous with each other can be captured on the surrounding screens 111, 112 b, 113 b, 114 b, and 115.

  This is an effect obtained by arranging each projection device at a position equivalent to the position of the observer seat using a mirror. At this time, a virtual reality space can be obtained even if each screen does not have a planar shape. Even if it has circular or curtain-like irregularities, the image projected from a position (or its vicinity) substantially equivalent to the viewpoint of the observer's seat has no shadow (small).

  That is, if the mirror is arranged at the height of the line of sight of the observer's seat and the observer's seat can be arranged at the position of the virtual image (ideal observer's seat position) of the projection device reflected on the mirror, no shadow is produced on the screen. However, in reality, the projection device and the mirror enter between the observer seat and the screen, and the screen cannot be seen from the observer seat. Therefore, in actual arrangement, the projection apparatus must be arranged on the ceiling, and the mirror must be arranged at a position higher than the viewpoint of the observer seat. Therefore, outside the field of view for viewing the screen from the observer seat, a reflecting mirror is provided between the projection device in the projection display unit and the screen, the distance between the projection device and the screen in each projection display unit, and the observer seat. And the screen are arranged at the same distance. In this case, trapezoidal correction is performed as much as the projection device and the reflecting mirror are arranged above (or below) the observer's seat so that the screen image has no distortion.

  In FIG. 1, the mirrors 131 to 135 are illustrated as an embodiment in which the mirrors 131 to 135 are arranged substantially vertically above or below the field of view of viewing the screen from the observer's seat. At this time, such an arrangement is possible by using the optical axis shift function provided in the projection apparatus. However, since light from the projection device is actually projected from above, if there are irregularities in the vertical direction of the screen, a shadow can be seen from the observer's seat. For this reason, in this case, in principle, it is only possible to deal with lateral irregularities such as curtain drape.

  However, if the mirror is tilted at an upper or lower position just outside the field of view for viewing each screen from the observer seat 101, the position of the virtual image of the projection device reflected on the mirror (that is, the ideal observer seat position) The observer seat can be arranged closer. Thereby, even if it projects on the screen which has an unevenness | corrugation also in the up-down (vertical) direction, the virtual reality space which substantially eliminated distortion can be obtained.

  Next, a description will be given of a device configuration according to another embodiment of the present invention in which a virtual reality space can be completely obtained in principle regardless of projections and depressions on any screen.

  FIG. 2 is a side view of the main part showing the equipment layout of the multi-screen display device according to another embodiment of the present invention. This figure shows only one of the five projection units 121 to 125 shown in FIG. 1 and the five projection units including the screens 111 to 115.

  Assume that the projected image is arranged and zoom-adjusted so as to have a shape in which the lights of the projection devices do not overlap and have no gap, as in FIG.

  First, a screen 211 is installed in the horizontal visual field from the observer seat 201. A half mirror 221 is disposed between the observer seat 201 and the screen 211 so as to be inclined at an angle of 45 degrees in the vertical direction when viewed from the observer seat 201. The projection device 231 is installed so as to irradiate projection light vertically downward from above the half mirror 221. This light is reflected by the half mirror 221 inclined at 45 degrees with respect to the optical axis of the projection device 231, refracted by 90 degrees, and projects an image on the screen 211 installed vertically. At this time, the distance L3 between the projection device 231 and the half mirror 221 is set and arranged equal to the distance L4 between the half mirror 221 and the observer seat 201. The observer seat 201 can observe the image on the screen 211 through the half mirror 221.

  With such an arrangement, a plurality of projection units including a plurality of projection devices, half mirrors, and screens are arranged so as to surround the observer seat 201, thereby realizing a virtual reality space.

  In the case of this embodiment, the actual observer seat is arranged in a state as if the image from the projection device 231 was projected from the viewpoint of the observer seat 201, that is, the ideal observer seat position. Can do. Therefore, in FIG. 1, it is possible to observe a completely undistorted image from the observer's seat without creating a shadow that has been seen from the observer's seat when the screen has unevenness in the vertical direction.

  In the case of this embodiment, an image observed regardless of the shape of the screen is an image that does not overlap, leave, or be distorted with images on other screens. Therefore, there are few geometric restrictions according to the space shape of an installation place, and a video can be observed by installing a screen with a high degree of freedom. For this reason, as long as a projection unit, a half mirror, and a projection unit that maintains the position of the observer's seat can be prepared, there is no restriction on the arrangement of the screen, and it can be installed in a short time.

  As described above, according to a preferred embodiment of the present invention, a virtual reality space can be created without distortion even if the screen shape cannot be a regular polygon shape. There is an effect that can be installed without worrying about the arrangement.

FIG. 3 is a plan view illustrating an arrangement of a screen, a projection device, and a mirror of a multi-screen display device according to an embodiment of the present invention. It is a side view which shows the structure of the multi-screen display apparatus by the other Example of this invention. It is a top view of the comparative example which can be considered for demonstrating the effect of the multi-screen display apparatus by this invention.

Explanation of symbols

  101, 201, 301 ... observer seat, 111-115, 211, 311-315 ... screen, 112b-114b, 313b ... screen moved in the direction of the observer seat, 121-125, 231, 321-325 ... projection device, 131 to 135... Mirror, 221... Half mirror, 312 a, 314 a.

Claims (8)

  In a multi-plane screen display device in which a plurality of projection display units each composed of a projection device and a screen are combined, a reflection mirror is provided between the projection device and the screen in at least one projection display unit, and image light projected from each projection device However, the projection device, the screen, the reflecting mirror, and the observer's seat are arranged so as to be irradiated from substantially the same point.   In a multi-plane screen display device in which a plurality of projection display units each composed of a projection device and a screen are combined, a reflection mirror is provided between the projection device and the screen in at least one projection display unit, and image light projected from each projection device The multi-screen display device is characterized in that the projection device, the screen, the reflecting mirror, and the viewer's seat are arranged so as to be irradiated from or near the viewer's seat.   In a multi-plane screen display device in which a plurality of projection display units each composed of a projection device and a screen are combined, a reflecting mirror is provided between the projection device and the screen in at least one projection display unit, and the projection device and the screen in each projection display unit A multi-screen display device, wherein the projection device, the screen, the reflecting mirror, and the observer seat are arranged so that the distance between them and the distance between the observer seat and the screen are substantially the same.   4. The multi-screen display device according to claim 1, wherein the reflecting mirror is disposed substantially vertically outside a field of view for observing the screen from the observer seat. 5.   4. The reflecting mirror according to claim 1, wherein a position of a virtual image of the projection device by the reflecting mirror approaches the observer seat outside the field of view for observing the screen from the observer seat. A multi-sided screen display device characterized by being arranged at an angle.   A multi-plane screen display device in which a plurality of projection display units each composed of a projection device and a screen are combined, and is a reflecting mirror disposed between the projection device of at least one projection display unit and the screen, and the projection by the reflecting mirror A multi-screen display device comprising a half mirror in which a viewer's seat is arranged at a virtual image position of the device and the screen can be seen from the viewer's seat.   7. The half mirror according to claim 6, wherein the half mirror is disposed so as to be inclined in the vertical direction when viewed from the observer's seat, and the projection device is disposed above or below the visual field for observing the screen from the observer's seat. A multi-screen display device characterized.   In a multi-plane screen display method in which a plurality of projection display units each composed of a projection device and a screen are combined, a reflecting mirror is arranged between the projection device and the screen of at least one projection display unit, and the distance between each projection device and the corresponding screen And arranging the projection device, the screen, the reflecting mirror, and the observer seat so that the distance between the observer seat and each screen is substantially the same, and projecting from each projection device onto each screen. A multi-sided screen display method characterized by the above.

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