JP2016114871A - Image projection screen and image display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image projection screen and an image display system capable of displaying various images.SOLUTION: The image projection screen includes: a reflection type screen; and a semi-transmission type screen which is disposed being opposed to the reflection plane of the reflection type screen. The image projection screen has a visible space which is formed by the reflection type screen and the semi-transmission type screen.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an image projection screen and an image display system.

  It is known that an image is displayed on an image display medium represented by a screen by a projector which is a projection-type image display device. Conventionally, the screen of the image display medium is a hardware type that is assumed to be fixedly installed or a software type that can be moved, but in any case, the movement of a person relative to the screen, for example, between the screen and the projector. There were restrictions such as not allowing people to enter so as not to interfere with projection.

  Conventionally, at least the plane of the image projection surface of the screen is maintained so as not to distort the image. However, the image display by the projector is not limited to just a presentation or content display, but can display a pseudo experience space, for example, a space where you can experience being underwater, that is, people can move freely in the image display space. Is required to be possible.

  Patent Document 1 proposes a screen device in which a plurality of curtains having light transmissivity and light diffusibility are arranged with a predetermined interval and an image is projected from different directions using a plurality of projectors. It is disclosed that this screen device allows a person to enter and exit between curtains and display a projected image that is not affected by the presence of a person or the like.

  Further, in Patent Document 2, a screen that projects an image from at least two directions onto a light-transmitting curtain provided in a plane and a plurality of light-transmitting curtains provided with bending. An apparatus has been proposed, and the screen apparatus disclosed in Patent Document 2 discloses that various image display effects can be achieved with a simple configuration.

JP 2008-268858 A JP 2014-92553 A

  However, the screen devices disclosed in Patent Document 1 and Patent Document 2 can obtain a desired display image by using at least two projectors. Therefore, an image projection screen and an image display system that can display various images without limiting the situation in which a person exists even if there is only one projector is proposed.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 An image projection screen according to this application example includes a reflective screen and a transflective screen disposed to face the reflective surface of the reflective screen, and the reflective screen, And a viewing space formed by the transmission screen.

  A person as an observer enters the viewing space Vs, and a reverse image of the projected image projected on the transflective screen and the projection light transmitted through the transflective screen are projected onto the reflective screen and displayed. The projected image can be visually recognized. As described above, according to the image projection screen of this application example, it is possible to project an image on both the reflective screen side and the transflective screen side of the image projection screen within the viewing space, which is comfortable. It is possible to expand the possibilities of various space productions, such as directing space and creating space with a sense of presence. The transflective screen also allows the projected image to be viewed from the outside of the viewing space by projecting the projected image to the outside of the viewing space. At the same time, the projected image projected on the reflective screen through the transflective screen can be viewed, so that the viewer outside the viewing space can see the stereoscopic image space, and more versatile. A space effect can be expressed.

  Application Example 2 In the application example described above, the light projection surface of the reflective screen and the end of the transflective screen provided in a direction intersecting the direction of gravity are close to each other. To do.

  According to the application example described above, a region closed in a direction intersecting the gravitational direction in the viewing space, a so-called horizontal direction, or a direction along the floor surface on which the image projection screen is installed, that is, an image projection surface of 360 degrees. A viewing space can be formed, and a variety of video effects can be produced.

  Application Example 3 In the application example described above, the transflective screen has a light transmittance of 40% or more and 80% or less.

  According to the above application example, an image can be projected on the image projection side surface and the back surface of the transflective screen, and at the same time, a visible image can be obtained by image projection light transmitted through the transflective screen. It can be projected on a reflective screen. Therefore, it is possible to produce various video effects in the viewing space.

  Application Example 4 In the application example described above, the transflective screen is formed by joining a plurality of transflective screen bodies, at least one of the transflective screen bodies, and the other transflective screen body. And the light transmittance is different.

  According to the application example described above, the transflective screen body having a light transmittance adapted to the magnitude of the projected light amount is disposed, such as when there is a difference in the light amount of the projected light of the image depending on the arrangement form of the transflective screen. By doing so, it is possible to project an image without unevenness (variation). Furthermore, the difference in light transmittance can also be used as a means for providing video variations.

  Application Example 5 An image display system according to this application example includes a reflective screen, a transflective screen disposed to face the reflective surface of the reflective screen, and a projector, and the reflective screen A viewing space formed by the transflective screen, and the transflective screen is disposed between the reflective screen and the projector.

  A person as an observer enters the viewing space Vs, and a reverse image of the projected image projected from the projector onto the transflective screen and the projection light transmitted through the transflective screen are projected onto the reflective screen. The displayed projection image can be visually recognized. As described above, according to the image display system of this application example, the image is displayed on both the reflective screen side and the transflective screen side of the image projection screen within the viewing space only by using at least one projector. Can be projected, and the possibilities of various space production such as production of comfortable space and production of space with a sense of reality can be expanded. The transflective screen also allows the projected image to be viewed from the outside of the viewing space by projecting the projected image to the outside of the viewing space. At the same time, the projected image projected on the reflective screen through the transflective screen can be viewed, so that the viewer outside the viewing space can see the stereoscopic image space, and more versatile. An image display system capable of expressing a space effect can be obtained.

  Application Example 6 In the application example described above, a plurality of the projectors are provided.

  According to the application example described above, it is possible to obtain an image display system that enables various image display effects.

  Application Example 7 In the application example described above, a plurality of the transflective screens are provided, and one of the transflective screens is selectively disposed between the reflective screen and the projector. And a control unit that projects an image corresponding to the selected transflective screen from the projector.

  According to the application example described above, it is possible to select a transflective screen that can display a video that is more suitable for various images, and it is possible to obtain an image display system that enables various image display effects. .

  Application Example 8 In the application example described above, at least a part of the transflective screen is movable along the projection direction of the image from the projector, and the screen drive unit is provided with the screen drive unit. A control unit that projects an image corresponding to a driving signal of the transflective screen from the projector.

  According to the application example described above, an image display system capable of giving a motion to a transflective screen and capable of producing various image displays so that images suitable for various images can be displayed. Can be obtained.

The schematic structure of the image projection screen which concerns on 1st Embodiment is shown, (a) is an external appearance perspective view, (b) is sectional drawing in the A surface shown to (a), (c) is the B surface shown to (a). FIG. The schematic structure of the image projection screen which concerns on 2nd Embodiment is shown, (a) is an external appearance perspective view, (b) is sectional drawing in the C surface shown to (a). The external appearance perspective view which shows the other form of the transflective screen which concerns on 2nd Embodiment. The image display system which concerns on 3rd Embodiment is shown, (a) is an external appearance perspective view which shows schematic structure, (b) is a schematic sectional drawing in the D surface shown to (a). The image display system which concerns on 4th Embodiment is shown, (a) is an external appearance perspective view which shows schematic structure, (b) is a schematic sectional drawing in the E surface shown to (a). The external appearance perspective view which shows schematic structure of the other form of the image display system which concerns on 4th Embodiment.

  Embodiments according to the present invention will be described below with reference to the drawings.

(First embodiment)
1A and 1B show a schematic configuration of an image projection screen according to the first embodiment, wherein FIG. 1A is an external perspective view, FIG. 1B is a cross-sectional view taken along plane A shown in FIG. 1A, and FIG. It is sectional drawing in the B surface shown in FIG.

  As shown in FIG. 1A, the image projection screen 100 is arranged such that the reflective screen 20 and the transflective screen 10 face each other. Here, the reflection type screen refers to a screen having the property that all of the light projected on the screen is reflected or diffused to the light projection side without passing through the screen. In addition, a transflective screen means that a part of the light projected on the screen is transmitted through the screen, and the projected light can be visually recognized from the back surface of the screen surface on which the light is projected. The other part of the light is a screen having both light-transmitting properties and light-reflecting properties that are reflected or diffused to the light projection side without passing through the screen.

  As shown in FIG. 1C, the reflective screen 20 is installed on the floor 300 so that an image projection surface 20a as a light projection surface is disposed along the direction of gravity (arrow G in the drawing). . Note that the image projection surface 20a of the reflective screen 20 may have any of a diffusion type, a reflective type, or a regression type, and may be appropriately selected depending on the image content to be projected.

  The transflective screen 10 is flexible and is preferably made of a material having light transmissivity and light reflectivity. For example, a material having a light transmittance of 40% or more and 80% or less, such as cold water or organza, is preferably used. Then, as shown in FIG. 1C, the transflective screen 10 is suspended by its own weight in the gravity direction G by the suspending means 500 that suspends and supports the transflective screen 10 from the ceiling portion 400.

  Note that the suspending means 500 has a function of a so-called curtain rail that includes a moving portion that allows the transflective screen 10 to move along the ceiling surface 400a. Then, as shown in FIGS. 1A and 1B, the end portions 10 a and 10 b intersecting the gravity direction G of the transflective screen 10 are projected on the reflective screen 20 by the suspending means 500. It can be moved until it is close to the surface 20a. Then, a viewing space Vs (shaded hatching portion) including a 360 ° image projection surface surrounded by the reflective screen 20 and the transflective screen 10 shown in FIG. 1B is formed.

  As will be described later, in the image projection screen 100, the projector 200 that projects an image onto the image projection screen 100 is arranged such that the transflective screen 10 is disposed between the reflective screen 20 and the projector 200. Installed. When an image is projected from the projector 200 toward the image projection screen 100, the projected image P1 is projected on the transflective screen 10, and image light transmitted through the transflective screen 10 is also transmitted. A projection image P2 is projected on the reflection type screen 20.

  When the person Hu enters the viewing space Vs, the projected image P2 projected on the reflective screen 20 can be viewed, and the projected image P1 projected on the transflective screen 10 is not shown. A reverse image can be visually recognized. As described above, according to the image projection screen 100 according to the present embodiment, it is possible to project an image on both the reflective screen side and the transflective screen side of the image projection screen within the viewing space Vs. . Further, when the end portions 10a and 10b of the transflective screen 10 are close to the image projection surface 20a of the reflective screen 20, the image is projected in all directions of the image projection screen 100, that is, in a range of 360 degrees. Is possible. Thereby, the possibility of various space productions, such as the production of a comfortable space and the production of a space with a sense of reality, can be expanded.

  Further, in the transflective screen 10, the projection image P <b> 1 faces the projector 200 as described above, that is, the projection image P <b> 1 is also projected outside the viewing space Vs, so that the projection image P <b> 1 is also viewed from the outside of the viewing space Vs. be able to. In addition, since the projected image P2 projected on the reflective screen 20 through the transflective screen 10 can also be visually recognized, a three-dimensional image space can be visually recognized by an observer outside the visual space Vs. At the same time, it can give a clear sense of space and express more diverse space effects. Furthermore, since the inside of the visual recognition area Vs can be visually recognized through the transflective screen 10, the guardian can watch the child playing while watching the projection image in the visual recognition space Vs from the outside of the visual recognition space Vs. At the same time, it is possible to easily protect the guardian who is outside the visual space Vs, such as preventing accidents inside the visual space Vs.

  As described above, in the image projection screen 100 shown in the present embodiment, even with one projector 200, it is possible to simultaneously project images onto a plurality of screens of the transflective screen 10 and the reflective screen 20. Become. Therefore, the transflective screen 10 is preferably formed of a material having a light transmittance of 40% or more and 80% or less as described above. If the light transmittance is smaller than 40%, the projected image P2 projected on the reflective screen 20 is dark and unclear, and if the light transmittance is larger than 80%, the projected image is projected on the transflective screen 10. The image P1 becomes unclear, and in addition, the visibility of the image from the outside of the viewing space Vs is deteriorated.

(Second Embodiment)
2A and 2B show a schematic configuration of an image projection screen 110 according to the second embodiment, in which FIG. 2A is an external perspective view, and FIG. 2B is a cross-sectional view on the C plane shown in FIG. The image projection screen 110 according to the second embodiment is different in the configuration of the transflective screen 10 in the image projection screen 100 according to the first embodiment, and the image projection screen 100 according to other first embodiments. The same components are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 2, an image projection screen 110 according to the second embodiment has a transflective screen 11 joined to a plurality of transflective screen bodies 11a, 11b, and 11c to form a single screen. It is. Further, the transflective screen bodies 11a, 11b, and 11c have different light transmittances.

  As shown in FIG. 2, the first transflective screen body 11a (hereinafter referred to as the first screen body 11a) is disposed at a position where the projection light of the projector 200 is projected from the front, and the second transflective screen body 11b. The image projection screen 110 is arranged so that the third screen body 11c (hereinafter referred to as the second screen body 11b) and the third transflective screen body 11c (hereinafter referred to as the third screen body 11c) are arranged on the side of the first screen body 11a. It is configured.

  In the embodiment, the light transmittances of the second screen body 11b and the third screen body 11c are set larger than the light transmittance of the first screen body 11a. The light transmittance of the first screen body 11a, the second screen body 11b, and the third screen body 11c is in the range of 40% to 80%.

  As shown in FIG. 2, the projection light L1 from the projector 200 projected onto the first screen body 11a is projected from the front of the first screen body 11a. On the other hand, the projection light L2 from the projector 200 projected onto the second screen body 11b is irradiated from an oblique side relatively to the second screen body 11b. Similarly, the projection light L3 from the projector 200 projected onto the third screen body 11c is irradiated from an oblique side relatively to the third screen body 11c. Note that the projection lights L1, L2, and L3 are not different projection lights, but are displayed by dividing the projection light L projected from the projector 200 for convenience of explanation.

  If the screen bodies 11a, 11b, and 11c have the same light transmittance, that is, the configuration of the transflective screen 10 according to the first embodiment, the second screen body 11b and the third screen body 11c are transmitted. Thus, the amount of light reaching the reflective screen 20 is smaller than the amount of light that passes through the first screen body 11a and reaches the reflective screen 20, and the image displayed on the reflective screen 20 becomes dark or unclear. There is a risk of becoming.

  Therefore, by making the light transmittance of the second screen body 11b and the third screen body 11c higher than that of the first screen body 11a, the light is transmitted through the transflective screen 11 and projected onto the reflective screen 20. Differences in image brightness, image quality, hue, and the like can be reduced.

  Note that the effect of the projected image is limited to the above-described form in which the light transmittances of the second screen body 11b and the third screen body 11c are set larger than the light transmittance of the first screen body 11a. For example, the light transmittances of the screen bodies 11a, 11b, and 11c may be different from each other. Further, the light transmittance of the second screen body 11b and the third screen body 11c can be set smaller than the light transmittance of the first screen body 11a.

  FIG. 3 is an external perspective view showing another form of the transflective screen 11 according to the second embodiment. As shown in FIG. 3, the transflective screen 12 included in the image projection screen 120 has transflective screen bodies 12 a, 12 b, and 12 c arranged in the gravity direction G and joined to form a single sheet. The transflective screen bodies 12a, 12b, and 12c have different light transmittances from at least one screen body and the other screen bodies. In such a transflective screen 12, the difference in the projected image in the gravity direction G can be used as a variation of the video effect.

  In the above-described transflective screens 11 and 12, an example in which three transflective screen bodies are joined to one sheet is illustrated, but the present invention is not limited to this, and two or more transflective screen bodies are joined. Further, the transflective screens 11 and 12 may be used. Further, at least one of the plurality of screen bodies may be a transflective screen body. Moreover, the joining method of each screen body is not specifically limited, for example, sewing, adhesion | attachment, welding, etc. In addition, it is preferable that the joined part maintains the transflective performance.

  As described above, in the image projection screens 100, 110, and 120, a video space in which a plurality of image quality (brightness, hue, etc.) can be visually recognized only by using at least one projector 200 is included in the viewing space Vs. Can be realized. In addition, although the projector 200 illustrated use of one unit in the said embodiment, it is not limited to this, A plurality of projectors can be used. In this way, by combining the transflective screens 10, 11, 12 and the like and a plurality of projectors, various video expressions are possible.

(Third embodiment)
4A and 4B show an image display system according to the third embodiment, in which FIG. 4A is an external perspective view showing a schematic configuration, and FIG. 4B is a schematic cross-sectional view on the D plane shown in FIG. In addition, the same code | symbol is attached | subjected to the same component as the image projection screen 100 which concerns on 1st Embodiment mentioned above, and description is abbreviate | omitted.

  An image display system 1000 (hereinafter, referred to as system 1000) shown in FIG. 4A includes a transflective screen 1012 disposed between a reflective screen 20 and a plurality of projectors 1210, 1220, and 1230 that project images. Has been. Then, as shown in FIG. 4B, a viewing space Vs surrounded by the reflective screen 20 and the semi-transmissive screen 1012 is formed, and the person Hu can see the reflective screen 20 and the semi-transparent screen in the viewing space Vs. Images projected from the projectors 1210, 1220, and 1230 can be viewed on the transmissive screen 1012.

  In the system 1000 according to this embodiment, as illustrated in FIG. 4A, three projectors 1210, 1220, and 1230 are installed, and an image sent from a personal computer 1300 (hereinafter referred to as a PC 1300) having image data. Project data.

  Further, in the system 1000 illustrated in FIG. 4, a transflective screen 1012 is disposed between the reflective screen 20 and the projectors 1210, 1220, and 1230. As shown in b), a plurality of transflective screens 1011, 1012 and 1013 are installed.

  The transflective screens 1011, 1012, and 1013 are installed on the ceiling surface 400 a of the ceiling portion 400 by a transflective screen support device 1500 (hereinafter referred to as a support device 1500). The support device 1500 includes a first support device 1510 that supports a transflective screen 1011 (hereinafter referred to as a first screen 1011) and a second support device that supports a transflective screen 1012 (hereinafter referred to as a second screen 1012). 1520 and a third support device 1530 that supports a transflective screen 1013 (hereinafter referred to as a third screen 1013). The first support device 1510 can wind up and store the first screen 1011 by a winding means (not shown). Similarly, the second support device 1520 has the second screen 1012, and the third support device 1530 has the third screen 1013. Each can be rolled up and stored.

  The support device 1500 hangs down any of the first screen 1011, the second screen 1012, or the third screen 1013 according to a control signal from the screen control unit 1400 according to an input signal from the PC 1300, thereby A transflective screen can be arranged.

  In addition, various video expressions can be realized by combining the first screen 1011, the second screen 1012, the third screen 1013, and any of the projectors 1210, 1220, and 1230 under the control of the PC 1300. For example, the light transmittances of the first screen 1011, the second screen 1012, and the third screen 1013 are made different from each other, or the colors of the first screen 1011, the second screen 1012, and the third screen 1013 are changed. Various video expressions are possible, such as making them different, or making the materials of the first screen 1011, the second screen 1012, and the third screen 1013 different.

  In the system 1000 described above, a system configuration in which three transflective screens and three projectors are illustrated is exemplified, but the present invention is not limited to this. In the above-described system 1000, an image display system using a plurality of transflective screens and a plurality of projectors has been described. However, a single transflective screen, that is, the image projection screen 100 according to the first embodiment. A system configuration with one projector 200 may be used. Even in such a system configuration of the image projection screen 100 and one projector 200, it is possible to visually recognize various image displays in the viewing space Vs of the image projection screen 100. .

(Fourth embodiment)
5A and 5B show an image display system according to the fourth embodiment, in which FIG. 5A is an external perspective view showing a schematic configuration, and FIG. 5B is a schematic cross-sectional view on the E plane shown in FIG. In addition, the same code | symbol is attached | subjected to the same component as the image projection screen 100 which concerns on 1st Embodiment mentioned above, and the system 1000 which concerns on 3rd Embodiment, and description is abbreviate | omitted.

  In an image display system 2000 shown in FIG. 5A (hereinafter referred to as system 2000), a transflective screen 2010 is disposed between a reflective screen 20 and a projector 200 that projects an image. Then, as shown in FIG. 5B, a visual space Vs surrounded by the reflective screen 20 and the semi-transmissive screen 2010 is formed, and the person Hu can divide the reflective screen 20 and the semi-transparent screen in the visual space Vs. An image projected from the projector 200 on the transmissive screen 2010 can be viewed.

  As shown in FIG. 5B, the system 2000 according to this embodiment includes a support device 2500 that suspends the transflective screen 2010 from the ceiling surface 400 a of the ceiling portion 400. The support device 2500 includes a screen holding unit 2510 that includes a moving unit that allows the transflective screen 2010 to move along the ceiling surface 400a, and a screen holding unit 2510 that includes the transflective screen 2010. And a projector 200, and a peristaltic device 2520 as a screen drive unit installed on the ceiling surface 400a that can move in the direction of the arrow S shown in the figure as the image projection direction.

  In the system 2000, the driving signal of the peristaltic device 2520 can be transmitted to the screen control unit 2400 in synchronization with the transmission of the image data of the PC 1300, and the peristaltic device 2520 can be driven in synchronization with the image projection from the projector 200. The peristaltic device 2520 reciprocates the screen holding portion 2510 in the S direction, for example, in small increments, thereby shaking the transflective screen 2010 having flexibility and giving a undulating motion. As a result, for example, by projecting a water wave image on a transflective screen 2010 that has been shaken by the peristaltic device 2520, it is possible to provide a lively wave image.

  FIG. 6 is an external perspective view showing a schematic configuration of an image display system 3000 (hereinafter, referred to as system 3000) as another form of the system 2000 according to the fourth embodiment. As shown in FIG. 6, the system 3000 includes an image projection screen 100 according to the first embodiment and a projector 200. In the system 2000 according to the fourth embodiment, the transflective screen 2010 is swung by the peristaltic device 2520. However, in the system 3000 according to the present embodiment, the transflective screen 10 is generated by the wind sent from the blower 3200 as the peristaltic device. It was set as the structure which shakes.

  The blower 3200 and the projector 200 are controlled by the PC 1300, project an image based on image data sent from the PC 1300 from the projector 200, and send wind wind that shakes the transflective screen 10 according to the image. Thus, a control signal is sent from the PC 1300 to the peristaltic device control unit 3100. Then, drive signals such as wind force and wind direction are sent from the peristaltic device control unit 3100 to the blower 3200, and the shaking of the transflective screen 10 can be created in accordance with the projected image.

  In the system 3000, since the blower 3200 having a simple mechanism is used as a peristaltic device, the transflective screen 10 can be easily shaken, and the blower 3200 can be moved and installed at an arbitrary position. It is possible to flexibly cope with the state of 3000 installation venues.

  DESCRIPTION OF SYMBOLS 10 ... Transflective screen, 20 ... Reflective screen, 100 ... Image projection screen, 200 ... Projector, 300 ... Floor part, 400 ... Ceiling part, 500 ... Hanging means.

Claims (8)

A reflective screen,
A transflective screen disposed opposite to the reflective surface of the reflective screen,
A viewing space formed by the reflective screen and the transflective screen;
An image projection screen characterized by that. The light projection surface of the reflective screen and the end of the transflective screen provided in a direction intersecting the direction of gravity are close to each other,
The image projection screen according to claim 1. The transflective screen has a light transmittance of 40% or more and 80% or less.
The image projection screen according to claim 1, wherein: In the transflective screen, a plurality of transflective screen bodies are joined, and at least one of the transflective screen bodies and the other transflective screen body have different light transmittances. ,
The image projection screen according to claim 1, wherein the image projection screen is provided. A reflective screen,
A transflective screen disposed to face the reflective surface of the reflective screen;
A projector, and
A viewing space formed by the reflective screen and the transflective screen;
The transflective screen is disposed between the reflective screen and the projector.
An image display system characterized by that. Comprising a plurality of the projectors,
The image display system according to claim 5. A transflective screen support device comprising a plurality of the transflective screens, wherein one of the transflective screens is selectively disposed between the reflective screen and the projector;
A control unit that projects an image corresponding to the selected transflective screen from the projector,
The image display system according to claim 5, wherein the image display system is an image display system. A screen drive unit that enables movement of at least a part of the transflective screen along a projection direction of the image from the projector;
A control unit that projects an image corresponding to a driving signal of the transflective screen to the screen driving unit from the projector,
The image display system according to claim 5, wherein the image display system is an image display system.

Images