JP5427549B2 - Video display system, lighting device - Google Patents

Description

  The present invention relates to a video display system and a lighting device.

  Conventionally, a technique combining an image display function and an illumination function is known in Patent Document 1 below.

  However, since the image itself is light, it competes with the illumination light. In particular, when an image is displayed with a high luminance by an image display function in order to display a clear image indoors, the influence of the image light reaches the surroundings as indirect light or direct light. For this reason, there is a problem that the illumination space intended by the illumination function is damaged by the image light.

  In addition, when there are multiple people in the room, use a head-mounted display or an intraocular (retinal) projection display to view the image so that others do not care about the image light. Is necessary and troublesome.

  In addition, there is a known problem that if there is a large difference between the brightness of the image light and the ambient brightness, the user feels tired and the realism of the image is impaired. Is required.

  Patent Document 1 describes an apparatus that combines a video display function and an illumination function. Patent Document 1 describes an active frame system for ambient light using a video display as a signal source, and an apparatus for adding ambient light described therein as a prior art to the video display.

  Patent Document 2 describes a technique that uses a retroreflecting material that transmits light and uses an image obtained by combining transmitted light from the back surface and retroreflected light from the front surface.

  Furthermore, Patent Document 3 describes a technique for changing the observation range of an image by adding a layer having optical anisotropy to the front surface of a retroreflective screen.

  Furthermore, Patent Document 4 describes a technique for illuminating from the back of a transparent retroreflective material and projecting an image from the front.

  Furthermore, although not a screen for projecting an image, a peep prevention filter that is mounted on the front surface of an image display device is known as a device that arranges fine slits to limit the observation position of the image.

Special table 2008-505350 gazette JP 2008-15359 A JP 2008-249897 A JP 2005-79773 A

  Among the techniques described in the above-mentioned patent documents, according to the technique described in patent document 1, it is possible to adjust the brightness of the surroundings corresponding to the video. However, the influence of image light on the indoor lighting space cannot be reduced. For this reason, the problem of impairing the illumination space intended by the illumination function cannot be solved.

  In the technique described in Patent Document 2, the influence of light from the back surface is controlled to display an image with a background superimposed on an image observer. However, it is impossible to provide an illumination space intended for the illumination function, including a non-observer who does not view the image while reducing the influence of the image light.

  Furthermore, the technique described in Patent Document 3 does not use the transmitted light from the back surface by the illumination function, and cannot properly match the image and the illumination space.

  Furthermore, the technique described in Patent Document 4 can shoot a subject video that can be synthesized with a background while maintaining a natural color tone and shadow relationship, and can match the video with ambient lighting. However, in order to realize this technique, there is a problem that the device configuration becomes complicated.

  Note that the effect of direct light out of the image light can be reduced by superimposing the peep prevention filter on the image display unit in order to avoid the light from the image seen by others. However, the effect of indirect light cannot be reduced simply by overlaying the peeping prevention filter on the video display unit, but on the other hand, there is a problem that the orientation of illumination light from the back is extremely limited.

  Therefore, the present invention has been proposed in view of the above-described circumstances, and can display a video display system that can reduce the competition between projected video light and illumination light while maintaining a simple configuration and does not impair the illumination space. Another object of the present invention is to provide a lighting device with a video display function.

An image display system according to the present invention includes an image projection device that projects image light, an illumination device that emits illumination light from a position different from the image light projected from the image projection device , and at least an illumination range of the illumination device. It provided to include the first surface passes through the illumination light incident, a screen having a retroreflective material second surface is a rear surface of the first surface reflects the retro-image light that has entered, the screen An image angle changing unit that changes an incident angle of image light with respect to or a reflection angle of image light with respect to the screen .

  In the video display system according to the present invention, the video angle changing unit may be an anisotropic diffusion plate provided on the second surface of the screen.

  In the video display system according to the present invention, the video angle changing unit may be a variable angle plate that changes the direction of transmitted light provided on the second surface of the screen.

  In the video display system according to the present invention, the video angle changing unit may be a half mirror provided between the screen and the screen.

  In the video display system according to the present invention, it is desirable to provide a diffusion plate on the first surface of the screen.

  The video display system according to the present invention preferably includes an illumination changing unit that changes at least one of the color and luminance of illumination light emitted from the illumination device.

  In the video display system according to the present invention, it is desirable that the illumination changing unit controls the color or luminance of the illumination light according to the video projected from the video projection device.

  The illumination device with a video display function according to the present invention is used in any of the video display systems described above, and the first surface transmits the incident illumination light, and the second surface which is the back surface of the first surface is the second surface. It has a retroreflective material that retroreflects incident image light.

  The video display system according to the present invention includes a retroreflective material that transmits illumination light incident on the first surface and retroreflects image light incident on the second surface, which is the back surface of the first surface. Since the screen is provided, the competition between the projected image light and the illumination light can be reduced and the effect of not impairing the illumination space can be exhibited with a simple configuration. That is, according to this video display system, it is possible to emit illumination light having no influence on the video to other positions while presenting the video to a user located in a certain range.

  According to the video display system of the present invention, since the incident angle of the video light with respect to the screen and the reflection angle of the video light with respect to the screen are changed, the degree of freedom of the viewpoint when viewing the video can be increased.

  According to the video display system of the present invention, the range in which video can be viewed is widened by the anisotropic diffusion plate, and the degree of freedom when viewing the video can be increased.

  According to the video display system of the present invention, since the angle change plate that changes the direction of the transmitted light provided on the second surface of the screen is provided, the position where the image can be observed changes depending on the change angle and direction of the angle change plate. It is possible to increase the degree of freedom when viewing images.

  According to the video display system of the present invention, since the half mirror is provided between the screen and the screen, the range in which the video can be viewed can be changed by changing the position and orientation of the half mirror.

  According to the video display system of the present invention, since the diffusion plate is provided on the first surface of the screen, even if the illumination light has a spot-like high illuminance as in the case where the light source is a point light source, The diffusing plate diffuses the illumination light uniformly, and the non-uniformity of the illumination light does not affect the image.

  According to the video display system of the present invention, since the illumination changing unit that changes at least one of the color and the luminance of the illumination light emitted from the illumination device is provided, the video is presented to the video observer and the illumination is provided. The ambient light can be presented consistently.

  According to the video display system of the present invention, since the color or luminance of the illumination light is controlled according to the video projected from the video projection device, the illumination is performed so as to enhance the realism of the video according to the content of the video. The color and brightness of light can be controlled automatically.

  According to the illuminating device with a video display function according to the present invention, it is used in the video display system according to any one of the above-described ones, the first surface transmits the incident illumination light, and the second surface which is the back surface of the first surface. Since it has a retroreflective material that retroreflects the image light incident on the surface, it can reduce the competition between the projected image light and the illumination light with a simple configuration, and does not impair the illumination space. Can demonstrate. That is, according to the illumination device with a video display function, it is possible to emit illumination light having no influence of the video to other positions while presenting the video to a user located in a certain range.

1 is a perspective view showing a schematic configuration of a video display system shown as a first embodiment of the present invention. It is sectional drawing which shows the structure of the illuminating device with a video display function in the video display system shown as 1st Embodiment of this invention. It is a block diagram which shows the functional structure of the video display system shown as 1st Embodiment of this invention. It is sectional drawing which shows the structure of the retroreflection layer in the video display system shown as 1st Embodiment of this invention. It is a perspective view which shows schematic structure of the video display system shown as 2nd Embodiment of this invention. It is sectional drawing which shows the structure of the illuminating device with a video display function in the video display system shown as 2nd Embodiment of this invention. It is a perspective view which shows schematic structure of the video display system shown as 3rd Embodiment of this invention. It is sectional drawing which shows the structure of the illuminating device with a video display function in the video display system shown as 3rd Embodiment of this invention. It is a perspective view which shows schematic structure of the video display system shown as 4th Embodiment of this invention. It is sectional drawing which shows the structure of the illuminating device with a video display function in the video display system shown as 4th Embodiment of this invention. It is sectional drawing which shows the structure of the illuminating device with a video display function in the video display system shown as 5th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
The video display system shown as the first embodiment of the present invention is configured, for example, as shown in FIG. The video display system includes a lighting device 1 with a video display function having a lighting function and a video display function, and a projector 2 as a video projection device that projects video light as projection light 2a. In the example shown in FIG. 1, the video display system is provided in a bedroom having a bed on which the video observer P1 and the non-observer P2 lie. For example, a large ceiling light installed on the ceiling of a bedroom can be used for the lighting device 1 with a video display function.

  The lighting device 1 with a video display function includes a screen 11 provided with a retroreflective layer 12. The illumination device 1 with a video display function emits illumination light 1 a into the bedroom via the screen 11. Thereby, the illuminating device 1 with a video display function implement | achieves the illumination space of desired brightness and hue as a light source in a bedroom.

  As shown in FIG. 2, the screen 11 in the illumination device 1 with a video display function is provided in the illumination range of the light source 3 that is the illumination device. The screen 11 only needs to be provided so as to include at least the illumination range of the light source 3, and the screen 11 may be larger in size than the illumination range of the light source 3. The screen 11 includes a retroreflective layer 12 that transmits the illumination light 1a incident on the first surface and retroreflects the projection light 2a (image light) incident on the second surface that is the back surface of the first surface. .

  The projector 2 can be a small projector using an LED (Light Emitting Diode) as a light source. As shown in FIGS. 1 and 2, the projector 2 is provided near the viewpoint of the video observer P1. Although the projector 2 is provided near the viewpoint of the video observer P1, the projector 2 is movable by the video observer P1. Therefore, the image viewer P1 may place the projector 2 near him. In this embodiment, one projector 2 is provided, but a projector 2 may be provided for each person so that a plurality of persons can view the video. Thereby, taking advantage of the characteristics of the retroreflective layer 12, a separate image is presented to each of a plurality of observers, and as a special example, a stereoscopic image using two projectors corresponding to the positions of the left and right eyes It is also possible to present.

  Projection light 2 a emitted from the projector 2 is projected onto the retroreflective layer 12 on the screen 11. Thereby, as shown in FIG. 2, the projection light 2a is reflected by the retroreflection layer 12 only near the viewpoint of the image observer P1. The illumination light 1a is scattered throughout the bedroom.

  FIG. 3 shows the functional configuration of such a video display system. The video display system includes a lighting device 1 with a video display function, a video data storage unit 21, a display control unit 22, and a projector 2.

  The illumination device 1 with a video display function includes a light source 3 and a screen 11. The light source 3 includes a fluorescent lamp, an incandescent lamp, an LED, a combination of a fluorescent lamp and an LED, a combination of an incandescent lamp and an LED, an organic EL (electroluminescence) unit, and the like. The light source 3 is switched on and off according to a switch operation or a remote control operation. The illumination light 1a emitted from the light source 3 is transmitted through the screen 11 and scattered throughout the bedroom. The illumination light 1a passes through the screen 11 and is reflected from the wall surface or the like, thereby forming an illumination space in the bedroom with appropriate illuminance and color. The light source 3 includes an illumination changing unit 31 for controlling the state of the light source 3.

  For example, the retroreflective layer 12 in the illumination device 1 with a video display function is configured as shown in FIG. As shown in FIG. 4A, the retroreflective layer 12 includes a large number of micro-prisms 12a. The microprism 12a has a triangular pyramid shape whose bottom is directed to the surface (second surface) of the screen 11. The microprism 12a reflects the projection light 2a emitted from the projector 2 on the inner surface and guides it in the emission direction of the projection light 2a.

  Further, as shown in FIG. 4B, the other retroreflective layer 12 may include a large number of minute spherical microbeads 12b. The microbeads 12b reflect the projection light 2a emitted from the projector 2 on the inner surface and guide it in the emission direction of the projection light 2a. Further, as shown in FIG. 4C, the other retroreflective layer 12 may be one in which a reflective film 12c is applied to the light source 3 side in a minute spherical microbead 12b. The retroreflection layer 12 reflects the projection light 2a emitted from the projector 2 by the reflection film 12c and guides the projection light 2a in the emission direction of the projection light 2a.

  The video data storage unit 21 stores video data of a video that the video observer P1 appreciates. The display control unit 22 reproduces the video data stored in the video data storage unit 21 and supplies it to the projector 2. The video data storage unit 21 and the display control unit 22 include, for example, a DVD (Digital Video Disc / Digital Versatile Disc) / HDD (Hard Disc Drive) recorder, a personal computer, and the like.

  As described above, the video display system is provided so as to include at least the illumination range of the light source 3, and the first surface of the screen 11 (the back surface of the screen 11) transmits the incident illumination light 1a. On the other hand, the video display system includes a retroreflective layer 12 that retroreflects video light (projection light 2 a) incident on a second surface (the surface of the screen 11) that is the back surface of the first surface of the screen 11. As a result, the video is presented to the video observer P1 whose viewpoint is in a predetermined range close to the projector 2, and at the same time, the influence of the video is affected to the non-observer P2 whose viewpoint is the other position. The illuminating device 1 with a video display function which becomes an illuminating device that emits no illuminating light 1a can be realized. This makes it possible to reduce the competition between the projected projection light 2a and the illumination light 1a with a simple configuration, and to properly match the image and the surrounding illumination so that the illumination space is not impaired, and the image display function An attached lighting device can be provided.

  Here, when the illumination device 1 with an image display function is looked up from the image observer P1 in the vicinity of the projector 2, the projection light 2a is about several tens to 1000 times that of projecting an image on a normal screen. Displayed with corresponding brightness. For this reason, the image projected on the surface of the illuminating device 1 with an image display function can be observed on a large screen with sufficient brightness with respect to the illumination light 1a.

  On the other hand, even if the illuminating device 1 with a video display function is looked up from other positions and directions like the non-observer P2, it can be seen only as a simple illuminating device (ceiling light). Further, the projection light 2 a from the projector 2 is suppressed from being scattered by the retroreflection layer 12. Furthermore, since the video display system can be made sufficiently smaller in light quantity than the illumination light 1a, the illuminance and hue of the illumination light 1a in the bedroom hardly change even if the brightness of the video changes. In addition, regarding the illuminance and hue of the illumination light 1a with respect to the entire field of view of the image observer P1, the influence of the change in brightness of the image is mitigated because the illumination device 1 with an image display function itself has light around the image.

  In addition, the video display system according to the first embodiment includes an illumination changing unit 31 that changes at least one of the color or luminance of the illumination light 1a emitted from the light source 3 in the illumination device 1 with a video display function. As a result, the video display system can present the video to the video observer P1, and can also present ambient light as illumination in a consistent manner. That is, when the image observer P1 is viewing the image, the color and brightness of the illumination light 1a can be changed so as to avoid giving a sense of incongruity due to the ambient light from the illumination light 1a. At this time, the video display system can dimm the illumination light 1a from the light source 3 in accordance with an operation of a remote controller (not shown).

  Furthermore, in the video display system according to the first embodiment, it is desirable that the illumination changing unit 31 automatically controls the color or luminance of the illumination light 1a according to the image projected from the projector 2 (projection light 2a). . Thereby, the video display system automatically controls the color and luminance of the illumination light 1a according to the content of the video so as to enhance the sense of reality of the video. At this time, when the video is a television broadcast program, for example, the illumination changing unit 31 downloads the program guide information distributed via the general-purpose line, and the video content (color, brightness, color) Further, the color and brightness of the illumination light 1a are controlled in accordance with the content of the video on the basis of the brightness change rate and change speed. More specifically, the illumination changing unit 31 registers in advance lighting information (color and luminance) set values appropriate for the video content such as animation and action, and adjusts the lighting information according to the recognized video content. What is necessary is just to switch a setting value.

[Second Embodiment]
Next, a video display system according to the second embodiment will be described. In addition, about the part similar to the above-mentioned 1st Embodiment, the detailed description is abbreviate | omitted by attaching | subjecting the same code.

  As shown in FIG. 5, the video display system shown as the second embodiment has a wider range 100 where the video can be seen than the video display system shown as the first embodiment. As shown in FIG. 6, this video display system includes an anisotropic diffusion plate 13 as a video angle changing unit on the video viewer P1 side of the screen 11 in the illumination device 1 with a video display function. This image angle changing unit changes the incident angle of the image light (projection light 2a) on the screen 11 or the reflection angle of the image light (projection light 2a) on the screen 11. The anisotropic diffusion plate 13 is installed on the second surface (front surface) of the retroreflective layer 12 in such a direction as to widen the diffusion angle of the projection light 2a with respect to the longitudinal direction of the bed.

  Thereby, the projection light 2 a emitted from the projector 2 is retroreflected by the retroreflective layer 12 and diffused by the anisotropic diffusion plate 13. Thereby, the video display system can change the reflection angle of the projection light 2a by the anisotropic diffusing plate 13, and can realize a wider video viewable range 100 than the first embodiment described above. Note that the anisotropic diffusion plate 13 can be in close contact with or integrally molded with the retroreflective layer 12.

  Here, moderate illuminance and color are maintained in the bedroom by the illumination light 1a from the illumination device 1 with the image display function and reflection from the wall surface of the illumination light 1a. Then, when the image observer P1 looks up at the illumination device 1 with an image display function from the state of lying in the bed (longitudinal direction), the projection image from the projector 2 is projected onto a normal screen by retroreflection. On the other hand, it can be seen with brightness equivalent to several tens of times. Compared with the first embodiment, the brightness of the image decreases due to diffusion by the anisotropic diffusion plate 13. Nevertheless, the image projected on the surface of the illumination device 1 with an image display function can be observed on a large screen with sufficient brightness with respect to the illumination light 1a.

  On the other hand, even if the illuminating device 1 with a video display function is looked up from other positions and directions such as the non-observer P2, it can be seen only as a illuminating device (ceiling light). Further, the projection light 2a from the projector 2 is suppressed from scattering to the surroundings by retroreflection. Furthermore, since the projection light 2a can be sufficiently reduced in light quantity as compared with the illumination light 1a, the change in illuminance and hue in the bedroom is small even if the brightness of the image changes. In addition, regarding the illuminance and color tone of the entire field of view of the video observer P1, the influence of the change in brightness of the video is mitigated because the light of the lighting device 1 with a video display function is present around the video.

  As described above, according to the video display system shown as the second embodiment, in addition to the effects of the first embodiment, the reflection angle of the projection light 2a with respect to the screen 11 is changed. The degree can be increased.

  Further, according to the video display system shown as the second embodiment, in addition to the effects of the first embodiment, the anisotropic view diffuser 13 widens the video viewable range 100 and allows a degree of freedom when viewing the video. Can be increased.

[Third Embodiment]
Next, a video display system according to the third embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the video display system shown as the third embodiment, as shown in FIGS. 7 and 8, the video angle changing unit changes the direction of the transmitted light (projected light 2a) provided on the second surface of the screen 11. It is composed of a plate 14. The angle change plate 14 is provided on the image viewer P1 side of the screen 11 in the illumination device 1 with an image display function as an image angle changing unit that changes the reflection angle of the image light (projected light 2a) with respect to the screen 11. It is also possible to closely attach or integrally mold the variable angle plate 14 with the retroreflective layer 12. In this video display system, as shown in FIG. 7, the video viewer P1 side of the screen 11 of the illumination device 1 with a video display function is a flat surface.

  As shown in FIG. 8, the variable angle plate 14 is attached to the second surface (the surface of the screen 11) of the retroreflection layer 12. Thereby, as shown by the dotted line in the figure, the projection light 2a incident on the screen 11 is reflected by the retroreflective layer 12 and the variable angle plate 14, and the projection light 2a ′ whose reflection direction is changed is obtained. Become. Thereby, an image can be presented to the image observer P1.

  Here, the interior of the bedroom is maintained at an appropriate illuminance and color by reflection from the illumination light 1a from the light source 3 and the wall surface by the illumination device 1 with a video display function. In this state, when the image observer P1 sleeps on the bed and looks up at the lighting device 1 with an image display function, the projected image from the projector 2 is projected by the recursive reflection from several 10 to 10 on the normal screen. It can be seen with brightness equivalent to several hundred times. For this reason, the image projected on the surface of the illuminating device 1 with an image display function can be observed on a large screen with sufficient brightness with respect to the illumination light 1a.

  On the other hand, even if the illuminating device 1 with a video display function is looked up from other positions and directions such as the non-observer P2, the illuminating device (ceiling light) can only be seen. In addition, regarding the illuminance and color tone of the entire field of view of the video observer P1, the influence of the change in brightness of the video is mitigated because the light of the lighting device 1 with a video display function is present around the video.

  As described above, according to the video display system, in addition to the effects of the first embodiment, the observable position of the video can be changed according to the position of the projector 2 and the change angle or direction of the change plate 14. Can increase the degree of freedom when viewing

[Fourth Embodiment]
Next, a video display system according to the fourth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 9 and 10, the video display system shown as the fourth embodiment is provided with a video angle changing unit that changes the incident angle of the video light (projection light 2 a) with respect to the screen 11. The half mirror 15 is used.

  The half mirror 15 is provided between the projector 2 and the illumination device 1 with a video display function, between the viewpoint position of the video observer P1 and the illumination device 1 with a video display function. The half mirror 15 reflects the projection light 2a emitted from the projector 2 toward the illumination device 1 with a video display function, and the projection light 2a reflected by the illumination device 1 with a video display function toward the video observer P1 side. To Penetrate. In this video display system, the video viewable range 100 of the video can be changed by changing the position of the projector 2 and the position and orientation of the half mirror 15.

  In addition, about the installation method of the half mirror 15 and the projector 2, and the shape of the half mirror 15, the technique described in Unexamined-Japanese-Patent No. 2006-113476 and Unexamined-Japanese-Patent No. 2006-276292 filed by the same inventor is used. Can do.

  Here, the interior of the bedroom is maintained at an appropriate illuminance and hue by the illumination light 1a from the inside of the illumination device 1 with a video display function and reflection from the wall surface. The image observer P1 lies on the bed and visually recognizes the region where the retroreflective layer 12 is provided in the illumination device 1 with an image display function through the half mirror 15. Thereby, the image | video observer P1 can visually recognize an image | video with the brightness equivalent to several 10 to several 100 times with respect to the projection on a normal screen by the retroreflection by the illuminating device 1 with a video display function. For this reason, the image projected on the surface of the screen 11 of the illumination device 1 with an image display function can be observed on a large screen with sufficient brightness with respect to the illumination light 1a.

  On the other hand, even if it looks up from other positions and other directions, such as non-observer P2, it can only be seen as a lighting device (ceiling light). Further, the projection light 2a from the projector 2 is suppressed from scattering to the surroundings by retroreflection. Furthermore, since the projection light 2a can be sufficiently reduced in light quantity as compared with the illumination light 1a, the change in illuminance and hue in the bedroom is small even if the brightness of the image changes. In addition, regarding the illuminance and color tone of the entire field of view of the video observer P1, the influence of the change in brightness of the video is mitigated because the light of the lighting device 1 with a video display function is present around the video.

  As described above, according to the video display system shown as the fourth embodiment, in addition to the effects of the first embodiment described above, by changing the position of the projector 2 and the position and orientation of the half mirror 15, The video viewing possible range 100 can be changed.

[Fifth Embodiment]
Next, a video display system according to the fifth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the video display system shown as the fifth embodiment, a diffusion plate 16 is provided on the first surface (surface on the light source 3 side) of the screen 11 as shown in FIG. Moreover, the video display system shown as 5th Embodiment is provided with the half mirror 15 as a video angle change part similarly to 4th Embodiment.

  In such a video display system, the projection light 2 a emitted from the projector 2 is reflected by the half mirror 15 toward the illumination device 1 with video display function and enters the screen 11. Then, the projection light 2 a is retroreflected by the retroreflective layer 12. Here, the projection light 2 a is mixed with the illumination light 1 a emitted from the light source 3. The illumination light 1a is diffused by the diffusion plate 16 and mixed with the projection light 2a. Thereby, even if the projection light 2a has a light distribution property or the spot has high illuminance, the illumination light 1a is not affected by the illumination light 1a. Therefore, the video display system can avoid that the video viewed by the video observer P1 is affected by the influence of the illumination light 1a on the projection light 2a.

  As described above, according to the video display system shown as the fifth embodiment, in addition to the effect of the first embodiment described above, the diffusion plate 16 that diffuses the illumination light 1a emitted from the light source 3 is provided. Does not affect the video.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

  For example, the screen 11 described above is exemplified by a curved shape, but is not limited thereto, and may be a complicated shape such as a chandelier as long as a retroreflective material is used for the surface. Even with such a configuration of the screen 11, the video presented to the video viewer P <b> 1 is less affected by video distortion and luminance unevenness to the extent that the content of the projected video is sufficiently recognized.

DESCRIPTION OF SYMBOLS 1 Illumination device 1a Illumination light 2 Projector 2a Projection light 3 Light source 11 Screen 12 Retroreflective layer 12a Microprism 12b Microbead 12c Reflective film 13 Anisotropic diffuser plate 14 Deflection plate 15 Half mirror 16 Diffuser plate 21 Video data storage part 22 Display Control Unit 31 Lighting Change Unit

Claims (8)

An image projection device for projecting image light;
An illumination device that emits illumination light from a position different from the image light projected from the image projection device ;
A retroreflective material that is provided so as to include at least the illumination range of the illuminating device, transmits the illumination light incident on the first surface, and retroreflects the image light incident on the second surface that is the back surface of the first surface. and a screen having a,
An image display system comprising: an image angle changing unit that changes an incident angle of image light with respect to the screen or a reflection angle of image light with respect to the screen . The video display system according to claim 1 , wherein the video angle changing unit is an anisotropic diffusion plate provided on a second surface of the screen. The video display system according to claim 1 , wherein the video angle changing unit is a variable angle plate that changes a direction of transmitted light provided on a second surface of the screen. The video display system according to claim 1 , wherein the video angle changing unit is a half mirror provided between the video angle changing unit and the screen. The first surface of the screen, image display system according to any one of claims 1 to 4, characterized in that a diffuser. The video display system according to any one of claims 1 to 5 , further comprising an illumination changing unit that changes at least one of a color and luminance of illumination light emitted from the illumination device. The video display system according to claim 6 , wherein the illumination changing unit controls a color or luminance of the illumination light according to an image projected from the video projection device. It is used for the image display system according to any one of claims 1 to 7 ,
An illumination device with a video display function, comprising: a retroreflective material that transmits illumination light incident on a first surface and retroreflects image light incident on a second surface, which is the back surface of the first surface.

Images