JP4645885B2 - Display device and display method - Google Patents

Description

  The present invention relates to a display device and a display method, and more particularly, to a display device and a display method that allow many people to observe the same or different stereoscopic moving images with the naked eye at the same time.

  The present applicant has previously proposed a system that allows many users to simultaneously view stereoscopic images (for example, Patent Document 1).

In the previous proposal, a flat screen is rotated around a rotation axis parallel to the screen, an image is projected onto a screen from a projector disposed around the screen, and the user observes the image from the vicinity of the screen.
JP 2004-12644 A

  However, in the previous proposal, many users can observe a stereoscopic image at the same time, but the number is limited.

  The present invention has been made in view of such a situation, and enables more users to simultaneously observe a stereoscopic image from an arbitrary direction.

The display device according to claim 1, wherein a first surface that displays an image corresponding to the light by receiving light from a first direction with respect to the rotation axis, and the first surface with respect to the rotation axis. At least a second surface that displays an image corresponding to the light by receiving light from a second direction different from the direction, and the first surface and the second surface are the surfaces Screens each having an optical filter that limits the incidence and reflection of light to a predetermined range including the normal of the surface, rotating means for rotating the screen around the rotation axis, and around the rotation axis A first irradiating means arranged to irradiate the screen with light corresponding to the image from the first direction, and arranged around the rotation axis, and from the second direction with respect to the screen; Irradiating light corresponding to the image Irradiating means, a first reflecting means disposed around the rotation axis and reflecting the light from the first irradiation means to be incident on the first surface of the screen; and A second reflecting means disposed around the second reflecting means for reflecting light from the second irradiating means to be incident on the second surface of the screen, the screen comprising the first surface and the second surface; The normals of the second surface are different angles that are less than 90 degrees with respect to the rotation axis, respectively, and the cross section is trapezoidal .
The screen further includes a scattering plate that scatters light incident through the optical filter, and the optical filter restricts light incident and reflection from the x-axis direction of the x-axis and y-axis that define the surface. And a second optical filter that restricts the incidence and reflection of light from the y-axis direction.

  The optical filter may be a light control film.

  The optical axis of the first irradiation means intersects the rotation axis at a first angle other than 90 degrees, and the optical axis of the second irradiation means is other than 90 degrees from the rotation axis, and the first angle Can intersect at a second angle different from.

The first irradiating unit and the second irradiating unit may irradiate light of different images.
A first fisheye lens that projects light from the first irradiating means onto the first reflecting means; and a second fisheye lens that projects light from the second irradiating means onto the second reflecting means. Further, it can be provided.
The first reflecting means and the second reflecting means can be configured as a plane mirror.
The first reflecting means and the second reflecting means can be configured as parabolic mirrors.

The display method according to claim 9 includes a first surface that displays an image corresponding to the light by receiving light from a first direction with respect to the rotation axis, and the first surface with respect to the rotation axis. At least a second surface that displays an image corresponding to the light by receiving light from a second direction different from the direction, and the first surface and the second surface are the surfaces Screens each having an optical filter that limits the incidence and reflection of light to a predetermined range including the normal of the surface, rotating means for rotating the screen around the rotation axis, and around the rotation axis A first irradiating means arranged to irradiate the screen with light corresponding to the image from the first direction, and arranged around the rotation axis, and from the second direction with respect to the screen; Irradiating light corresponding to the image Irradiating means, a first reflecting means disposed around the rotation axis and reflecting the light from the first irradiation means to be incident on the first surface of the screen; and A second reflecting means disposed around the second reflecting means for reflecting light from the second irradiating means to be incident on the second surface of the screen, the screen comprising the first surface and the second surface; A display method for a display device, characterized in that the normals of the second surface are different angles that are less than 90 degrees with respect to the rotation axis, respectively, and the cross-section thereof is a trapezoidal shape. A rotation step for rotating the rotation axis about the rotation axis, and the first direction around the rotation axis with respect to the screen rotated by the processing of the rotation step via the first reflecting means To the above image Light from the first direction irradiated by the process of the first irradiation step on the first surface of the screen rotated by the process of the first irradiation step for irradiating light and the rotation step A first display step for displaying an image corresponding to the second screen, and the second screen around the rotation axis with respect to the screen rotated by the processing of the rotation step via the second reflecting means. The second irradiation step of irradiating light corresponding to the image from the direction, and the second surface of the screen rotated by the processing of the rotation step, the irradiation of the second irradiation step by the processing of the second irradiation step A second display step for displaying an image corresponding to light from a second direction, the first irradiation step, the second irradiation step, the first display step, and a second display step. The display steps are performed simultaneously, respectively.

  In the present invention, a screen having at least a first surface and a second surface is rotated, and an image is displayed on each of the first surface and the second surface.

  According to the present invention, a stereoscopic moving image can be displayed. In particular, according to the present invention, it becomes possible for many users to observe a stereoscopic moving image simultaneously from an arbitrary direction.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode of the present invention will be described below. The correspondence relationship between the disclosed invention and the embodiments is exemplified as follows. Although there is an embodiment which is described in the specification but is not described here as corresponding to the invention, it means that the embodiment corresponds to the invention. It doesn't mean not. Conversely, even if an embodiment is described herein as corresponding to an invention, that means that the embodiment does not correspond to an invention other than the invention. Absent.

  Further, this description does not mean all the inventions described in the specification. In other words, this description is for the invention described in the specification and not claimed in this application, i.e., for the invention that will be applied for in the future or that will appear as a result of amendment and added. It does not deny existence.

The display device according to the first aspect (for example, the display device 61 in FIG. 5) has a first direction (for example, the direction of the optical axis 71KU in FIG. 6) with respect to the rotation axis (for example, the rotation shaft 73A in FIG. 5). A first surface that displays an image corresponding to the light by receiving the light (for example, the surface 73S _{1 in} FIG. 8A) and a second direction different from the first direction with respect to the rotation axis At least a second surface (for example, surface 73S _{2 in} FIG. 8A) that displays an image corresponding to the light by receiving light from (for example, the direction of the optical axis 71KL in FIG. 6), The first surface and the second surface are optical filters that limit the incidence and reflection of light on the surface to a predetermined range including the normal line of the surface (for example, the light control films 82 to 85 in FIG. 9). Each having a screen (eg, screen 73 in FIG. 5) and rotating the screen Rotating means (for example, the driving unit 105 in FIG. 14) that rotates around an axis, and a rotation unit that is disposed around the rotating axis and that irradiates light corresponding to the image from the first direction to the screen. 1 irradiation means (for example, the projector 71U in FIG. 5) and a second irradiation means (around the rotation axis) that irradiates the screen with light corresponding to the image from the second direction. For example, the projector 71L in FIG. 5 and the first reflecting means (which is disposed around the rotation axis) and reflects the light from the first irradiating means to be incident on the first surface of the screen. For example, the mirror 121U in FIG. 17 and the second reflecting means (around the rotation axis) that reflects the light from the second irradiating means so as to be incident on the second surface of the screen. For example, the mirror 121L in FIG. Wherein the screen is a normal line of the first surface and the second surface becomes the different angles less than 90 degrees with respect to each of the rotation axis, the shape of the cross section trapezoidal (e.g., A screen 141) shown in FIGS. 18A to 18D .

  The screen further includes a scattering plate (for example, the scattering plate 81 in FIG. 9) that scatters light incident through the optical filter, and the optical filter includes an x-axis and a y-axis that define the surface. A first optical filter that limits the incidence and reflection of light from the x-axis direction (for example, the light control films 82 and 84 in FIG. 9), and a second optical filter that restricts the incidence and reflection of light from the y-axis direction. Optical filters (for example, the light control films 83 and 85 in FIG. 9).

  The optical axis of the first irradiation means intersects the rotation axis at a first angle other than 90 degrees (for example, the angle θ in FIG. 6), and the optical axis of the second irradiation means is the rotation axis. And at a second angle different from the first angle (for example, π-θ in FIG. 6).

The display method according to claim 9 (for example, the image display processing method of FIG. 15) has a first direction (for example, the direction of the optical axis 71KU of FIG. 6) with respect to the rotation axis (for example, the rotation axis 73A of FIG. 5). A first surface (for example, a surface 73S _{1 in} FIG. 8A) that displays an image corresponding to the light by receiving the light from the light, and a second surface that is different from the first direction with respect to the rotation axis. At least a second surface (for example, surface 73S _{2 in} FIG. 8A) that displays an image corresponding to the light by receiving light from a direction (for example, the direction of the optical axis 71KL in FIG. 6); The first surface and the second surface are optical filters that limit the incidence and reflection of light on the surface to a predetermined range including the normal line of the surface (for example, the light control films 82 to 85 in FIG. 9). ) and a screen having respective normal of the first surface and the second surface is its Each different angles and becomes less than 90 degrees with respect to the rotation axis, the rotation step of rotating the screen in cross-section in the shape of a trapezoidal (e.g., screen 141 of FIG. 18A to FIG. 18D) to the center of the rotary shaft (For example, step S11 in FIG. 15 executed by the drive unit 105 in FIG. 14) and the first rotating means (for example, the mirror 121U in FIG. 17) with respect to the screen rotated by the processing of the rotation step. A first irradiation step of irradiating light corresponding to the image from the first direction around the rotation axis (for example, step S15 of FIG. 15 executed by the projector 71U of FIG. 5), and rotation The first surface displaying the image corresponding to the light from the first direction irradiated by the process of the first irradiation step is displayed on the first surface of the screen rotated by the process of the step. Shows step (e.g., step S16 of FIG. 15 in which the surface 73S ₁ of FIG. 8A is executed) and, with respect to the screen is rotated by the process of the rotation step, the second reflecting means (e.g., in FIG. 17 A second irradiation step of irradiating light corresponding to the image from the second direction around the rotation axis via the mirror 121L) (for example, step S17 in FIG. 15 executed by the projector 71L in FIG. 5); And a second surface that displays an image corresponding to the light from the second direction irradiated by the processing of the second irradiation step on the second surface of the screen rotated by the processing of the rotation step. the display step (e.g., step S18 of FIG. 15 in which the surface 73S ₂ of FIG. 8A is executed) and a, the first irradiation step and the second irradiation step, the first display step and the second display Each step is executed simultaneously.

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

FIG. 1 shows a configuration example of an imaging apparatus of the present invention. The imaging device 1 includes a first group of video cameras 11U _{1 to} 11U ₁₀ , a second group of video cameras 11L _{1 to} 11L ₁₀ , and a signal processing device 12.

Video cameras 11U _{1 to} 11U ₁₀ and video cameras 11L _{1 to} 11L ₁₀ (Hereinafter, these video cameras are simply referred to as video camera 11U or video camera 11L when it is not necessary to individually distinguish them. Are similarly arranged around the subject 13 so as to image the subject 13. As shown in FIG. 2, the video camera 11U has an optical axis 11KU directed to the center point P1 of the subject 13, and an angle from the vertical line L passing through the center point P1 of the optical axis 11KU is θ. It is arranged to be.

  Similarly, the video camera 11L of the second group is also arranged so that the optical axis 11KL is directed to the center point P1 and the angle from the vertical line L passing through the center point P1 is π−θ. . That is, the video cameras 11U in the same group are arranged so as to take an image of the subject 13 from an obliquely upward direction, and the video cameras 11L in the second group are arranged so as to image the subject 13 from an obliquely downward direction.

  As shown in FIGS. 1 and 2, the first group of video cameras 11 </ b> U are arranged symmetrically with respect to the straight line L. Similarly, the video camera 11L of the second group is also arranged symmetrically with respect to the straight line L. The first group of video cameras 11U and the second group of video cameras 11L are arranged symmetrically with respect to the center point P1.

  The signal processing device 12 processes the image signals supplied from the video cameras 11U and 11L.

The signal processing device 12 includes, for example, storages 31U _{1 to} 31U ₁₀ , storages 31L _{1 to} 31L ₁₀ , an encoding unit 32, a multiplexing unit 33, a storage unit 34, and a controller 35, as shown in FIG. ing. The storages 31U _{1 to} 31U ₁₀ store the outputs from the corresponding video cameras 11U _{1 to} 11U ₁₀ , respectively. The storages 31L _{1 to} 31L ₁₀ also store outputs from the corresponding video cameras 11L _{1 to} 11L ₁₀ . The encoding unit 32 encodes the outputs of the storages 31U _{1 to} 31L ₁₀ and outputs them to the multiplexing unit 33. The multiplexing unit 33 multiplexes the image data output from the encoding unit 32, and outputs the data to the recording unit 34 for recording. For example, the controller 35 configured by a microcomputer or the like controls operations of the video cameras 11U and 11L, storages 31U and 31L, an encoding unit 32, a multiplexing unit 33, and a recording unit 34.

  Next, the image capturing process will be described with reference to the flowchart of FIG. In step S1, the video cameras 11U and 11L image the subject 13. That is, when the user instructs the controller 35 to start imaging, the controller 35 controls the video cameras 11U and 11L and starts imaging the subject 13. In step S2, the storages 31U and 31L store image data output from the corresponding video cameras 11U and 11L. In step S3, the encoding unit 32 reads and encodes the image data stored in the storages 31U and 31L. In step S4, the multiplexing unit 33 multiplexes the image data output from the encoding unit 32. In the embodiment of FIG. 3, image data for 20 channels are multiplexed. In step S <b> 5, the recording unit 34 records the multiplexed data output from the multiplexing unit 33. In step S6, the controller 35 determines whether the user has instructed to end the operation. If not, the process returns to step S1, and the subsequent processing is repeated. If it is determined in step S6 that an operation end instruction has been issued, the process ends.

  As described above, the recording unit 34 records the image data captured by the video cameras 11U and 11L on a built-in recording medium.

  The recording medium does not necessarily have to be built in the recording unit 34, and may be transferred to another device and recorded via a wired or wireless network.

FIG. 5 shows a configuration example of a display device to which the present invention is applied. The display device 61 includes a first group of projectors 71U _{1 to} 71U ₁₀ , a second group of projectors 71L _{1 to} 71L ₁₀ , a signal processing device 72, and a screen 73 rotated around a rotation shaft 73A. Yes.

The first group of video cameras 71U _{1 to} 71U ₁₀ are arranged around the rotation shaft 73A at equal intervals. As shown in FIG. 6, the optical axis 71KU of the projector 71U is arranged so as to be directed to the center point P2 of the screen 73 and so that the angle from the rotation axis 73A is θ. Similarly, the projector 71L is arranged around the rotation axis 73A at equal intervals so that the optical axis 71KL is directed to the center point P2. The angle between the rotation axis 73A and the optical axis 71KL is π-θ. As is clear by comparing FIG. 6 with FIG. 2, the projectors 71U and 71L are arranged at positions corresponding to the video cameras 11U and 11L.

  As shown in FIGS. 5 and 6, the first group of projectors 71 </ b> U is arranged symmetrically with respect to the rotation axis 73 </ b> A. The second group of projectors 71L is also arranged symmetrically with respect to the rotation axis 73A. Further, the first group of projectors 71U and the second group of projectors 71L are arranged symmetrically with respect to the center point P2.

  5 and 6 are compared with FIGS. 1 and 2, the relationship between the video cameras 11U and 11L of the imaging device 1 and the subject 13 is the relationship between the projectors 71U and 71L of the display device 61 and the screen 73. Arranged to be similar to the relationship.

  The signal processing device 72 controls the projectors 71U and 71L to project an image on the screen 73.

FIG. 7 shows the positional relationship seen from the plane of the projector 71 and the screen. As shown in the figure, the projectors 71U _{1 to} 71U ₁₀ are arranged around the rotation shaft 73A so that the optical axes thereof are directed to the rotation shaft 73A at equal intervals.

8A and 8B show the positional relationship between the projectors 71U and 71L and the screen 73 as seen from the side. The screen 73 is disposed at an angle θ with respect to the rotation shaft 73A. As shown in Figure 8A, the projector 71U of the first group, the normal optical axis thereof 71KU is through the way (the center point P2 is parallel to the upper surface 73S ₁ normal in view of the screen 73 Arranged to match). In contrast, as shown in FIG. 8B, the optical axis 71KL projector 71L of the second group, in the drawing so as to be parallel to the normal of the surface 73S ₂ below the screen 73 (the center point P2 To match the normal passing through).

FIG. 9 shows a cross-sectional configuration of the screen 73. As shown in the figure, the screen 73 has a scattering plate 81 at its center, a light control film 82 is laminated on one surface thereof, and a light control film 83 is further laminated thereon. The surface on the light control film 83 side is a surface 73S ₁ . A light control film 84 is laminated on the other surface of the scattering plate 81, and a light control film 85 is further laminated thereon. The surface on the light control film 85 side is a surface 73S _{2 of the} screen 73.

  As shown in FIG. 10, the light control film 82 is arranged so that the fine slits are substantially parallel to the y-axis direction of the x-axis and the y-axis that define the surface of the screen 73. On the other hand, the light control film 83 laminated on the upper side is arranged so that the fine slits are substantially parallel to the x-axis direction (that is, orthogonal to the slits of the light control film 82). .

  Similarly, the light control film 84 on the back side of the scattering plate 81 is disposed so that the slit is parallel to the y axis, and the light control film 85 laminated thereon has the slit parallel to the x axis. Are arranged as follows.

  FIG. 11 shows the relationship between the slits of the light control film 82 and the light control film 83. As shown in the figure, the slits 82A of the light control film 82 are arranged in parallel to the y-axis. As a result, the light from the scattering plate 81 (the same applies to the light from the reverse direction) is limited in its x-axis direction, and the amount of transmitted light is distributed as represented by the curve Cx in FIG.

  On the other hand, since the slits 83A of the light control film 83 are arranged parallel to the x-axis, the amount of transmitted light is limited as indicated by the curve Cy. As a result, the two light control films 82 and 83 have a large light transmittance within a predetermined angle range centered on the optical axis, and a small light transmittance in the vicinity thereof (a large attenuation). ).

  Although illustration is omitted, the light control films 84 and 85 have the same relationship.

Therefore, as shown in FIG. 8A, when the light from the projector 71U is incident along the optical axis 71KU, the surface 73S _{1 of the} screen 73 has a predetermined range centered on the normal passing through the center point P2. Only light is incident, and the reflected light is emitted only within a predetermined angle range centered on the normal.

The same thing occurs on the surface 73S ₂ as shown in FIG. 8B. That is, the surface 73S ₂ is incident only on a predetermined angle range among the light in the vicinity of the normal line passing through the center point P2, and emits the reflected light only on a predetermined angle range centered on the normal line.

As a result, in example 7, when the surface 73S ₁ of the screen 73 is oriented in the direction of the projector 71U _1, light from the projector 71U ₁ is incident on the scattering plate 81, the optical axis 71KU ₁ is the reflected light However, the light from the adjacent projectors 71U ₂ and 71U ₁₀ is not incident on the scattering plate 81, and therefore the reflected light is not reflected. Screen 73 is rotated, when the surface 73S ₁ is directed to a projector 71U _10, the light from the projector 71U ₁₀ is incident on the scattering plate 81, a predetermined of the reflected light around the optical axis 71KU ₁₀ At this time, the light from the adjacent projectors 71U ₁ and 71U ₉ is not incident on the scattering plate 81, and therefore the reflected light is not emitted.

As a result, the screen 73, the surface 73S ₁ displays only the image of the face to have (normal match) projector 71U while rotating. Therefore, only the user who is located in the vicinity of the optical axis 71KU can see the image.

For example, when the cut-off angle or half-value angle (the angle at which the gain is 50%) of the light control film is 30 degrees, as shown in FIGS. 12A and 12B, the angle of the screen 73 with respect to the rotation axis 73A is 30 degrees. optical axis 71KU projector 71U is parallel to the normal of the surface 73S ₁ of the screen 73 (match) is arranged so that the optical axis 71KL projector 71L is parallel to the normal of the surface 73S ₂ of the screen 73 ( If they are arranged so as to coincide with each other, the elevation angle θ from the center of the screen 73 and the amount (luminance) of light emitted (reflected) in that direction are as shown in FIG. In the figure, C _U represents the characteristic of the reflected light from the surface 73S ₁ , and C _L represents the characteristic of the reflected light from the surface 73S ₂ . As shown in the figure, an image in which images are mixed by 50% can be obtained at θ = 0 °.

FIG. 14 illustrates a more detailed configuration example of the display device 61. As shown in the figure, the display device 61 includes a storage 101, a separation unit 102, a decryption unit 103, a controller 104, and a drive unit 105. The storage 101 stores the image data recorded on the recording medium by the recording unit 34 of FIG. The accumulation may be performed by using the recording medium itself as the storage 101, or may be recorded on a recording medium incorporating image data transmitted via a wired or wireless connection. The separation unit 102 separates the multiplexed image data read from the storage 101, and in this embodiment, separates the image data for 20 channels. The decoding unit 103 decodes the image data of each channel supplied from the separation unit 102. Image signals from the corresponding channels (video cameras 11U _{1 to} 11L ₁₀ ) decoded by the decoding unit 103 are supplied to the projectors 71U _{1 to} 71L ₁₀ respectively. Each of the projectors 71U _{1 to} 71L ₁₀ generates light corresponding to the input image signal and projects it onto the screen 73.

  The controller 104 includes a microcomputer and controls the operations of the storage 101, the separation unit 102, the decoding unit 103, the projectors 71U and 71L, and the driving unit 105. The drive unit 105 is controlled by the controller 104 and rotates the screen 73 at a constant speed. As shown in FIG. 5, the virtual rotation axis 73A intersects the screen 73 at the center point P2, but the actual rotation axis 73A actually intersects the screen 73 as shown in FIG. If it arrange | positions so that the light may be projected on the screen 73 from the projectors 71U and 71L located in the other side of the rotating shaft 73A. Therefore, as shown in FIG. 14, it is preferable that the actual rotating shaft 73 </ b> A does not intersect the screen 73. The drive unit 105 rotates the screen 73 by rotating the table 73B to which the screen 73 is fixed.

  Next, image display processing by the display device 61 will be described with reference to the flowchart of FIG. In step S <b> 11, the controller 104 rotates the screen when an image display is instructed by the user. Specifically, the drive unit 105 is controlled, and the drive unit 105 rotates the screen 73 at a constant speed via the rotation shaft 73A based on this control. When the image to be displayed is an NTSC image signal image, the NTSC image signal has 30 frames per second and 60 fields, so the screen 73 has 60 times per second. Driven to rotate. Next, in step S12, the storage 101 reads image data. That is, the controller 104 controls the storage 101 to read input image data and supply it to the separation unit 102. In addition, when the image data imaged with the imaging device 1 is provided to the display device 61 in real time, the storage 101 accumulates the image data supplied from the imaging device 1, sequentially reads out and outputs the data. To do. In step S13, the separation unit 102 separates the multiplexed signal. In the case of the present example, since image data for 20 channels are multiplexed, they are separated, and each of the image data for 20 channels is supplied to the decoding unit 103.

In step S14, the decoding unit 103 decodes the input image data. The decoding unit 103 supplies the decoded image signals for 20 channels to the projectors 71U _{1 to} 71L ₁₀ of the corresponding channels. In step S15, the first projector projects light corresponding to the image onto the screen. Specifically, as shown in FIG. 6, the projector 71 </ b> U that is the first group of projectors projects light from the direction of the angle θ (from obliquely above) to the rotation shaft 73 </ b> A.

In step S16, the first surface of the screen displays an image. That is, since the screen 73 rotates 60 times per second, the surface 73S ₁ of the screen 73 has a normal of one projector 71U _i (i = 1, 2,... At a rate of once per rotation. , 10). At this time, the light projected by the corresponding projector 71U _i is incident on the surface 73S ₁ and an image is displayed there.

In step S17, the second group of projectors projects light corresponding to the image onto the screen. In step S18, the second surface displays an image. That is, the other surface 73S ₂ of the screen 73 also coincides with one projector 71L _i (i = 1, 2,..., 10) at a normal line rate of 60 times per second. In this timing, the image is displayed on the surface 73S _2.

Therefore, as shown in FIG. 16, the user can observe the image of the surface 73S ₁ projected by the first group of projectors 71U _i from positions PU _i1 and PU _{i2 in} the vicinity of the optical axis 71KU _i. it can. Similarly, the user displays an image of the surface 73S ₁ based on the light projected by the first group of projectors 71U _j (j = 1, 2,..., 10) at a position PU near the optical axis 71KU _j. It can be observed from _j1 and PU _j2 . Further, the user can observe the image projected by the second group of projectors 71L _i on the surface 73S ₂ from the optical axis 71KL _i and the nearby positions PL _i1 and PL _i2 . The user, the image of the surface 73S ₂ of the light projector 71L _j is projected can be observed from the position PL _j1, PL _j2 near the optical axis 71KL _j.

  The image is displayed once every 1/60 seconds, but since the human eye itself has an afterimage effect, a person can recognize it as an image. Of course, it is possible to suppress the occurrence of flicker by setting the rotation speed of the screen 73 to, for example, 120 times or 240 times per second.

  In step S <b> 19, the controller 104 determines whether the instruction from the user is finished. If termination is not instructed, the process returns to step S12, and the subsequent processing is repeatedly executed. If the instruction from the user is to end the process, the controller 104 stops the rotation of the screen in step S20. That is, the drive unit 105 is controlled by the controller 104, and the rotation of the screen 73 is stopped. At this time, the controller 104 controls the storage 101, the separation unit 102, the decryption unit 103, and the projectors 71U and 71L, and ends the display process.

As described above, the user can observe the stereoscopic moving image displayed on the screen 73. That is, for example, when an image of the front of the subject is displayed in the vicinity of the projector 71U ₁ , the same subject can be seen from the vicinity of the projector 71U ₆ located on the opposite side across the rotation axis 73A. A back image is observed. Similarly, from the vicinity of the projector 71U _3, the image can be observed on the right side of the object, from the projector 71U ₈ near, it is possible to observe the image of the left side surface of the object.

  Since two screens are provided on one screen that rotates on the same rotation axis, and an image is displayed on each screen, more users can observe the image. In addition, the user near the projector 71U in the first group can observe an image of the subject viewed from above, and the user near the projector 71L in the second group can compare the same subject. The image from below can be observed.

In the embodiment shown in FIG. 5, the light emitted from the projectors 71U and 71L is projected directly onto the screen 73. For example, as shown in FIG. 17, the light is projected via the mirrors 121U and 121L. It may be. That is, in the embodiment of FIG. 17, the mirrors 121U _{1 to} 121U ₁₀ corresponding to the positions where the light from the projectors 71U _{1 to} 71U _{10 of} the first group is reflected toward the center point P2 on the screen 73. Is arranged. Similarly, corresponding mirrors 121L _{1 to} 121L ₁₀ are arranged so as to reflect light from the second group of projectors 71L _{1 to} 71L ₁₀ toward the center point P2.

  In the case of this embodiment, the projectors 71U and 71L can be concentrated in the vicinity of the rotation shaft 73A. Thereby, the freedom degree at the time of observation can be improved. The number of projectors 71U and 71L is 10 as in the case of the embodiment of FIG. 5. However, the number of projectors 71U and 71L is reduced to one, and the image of the one projector is projected via the fisheye lens. Good. In this case, in the photographing itself, light from the subject is imaged by a single video camera via a mirror and a fisheye lens. In this case, it is preferable to use an equidistant projection type fisheye lens as a so-called fθ fisheye lens.

  Further, by using a parabolic mirror instead of a plane mirror as the mirror, it is possible to project the light beams emitted from the projectors 71U and 71L onto the screen 73 as parallel light beams.

  18A to 18D show another embodiment of the screen. In this embodiment, the screen 141 is configured such that its cross section has a trapezoidal shape. And the angle with respect to the rotating shaft 141A of the surface 142 and the surface 143 from which an image is displayed on the surface 142 and the surface 143 of the screen 141 is different. That is, as shown in FIG. 18C, the surface 142 is formed to face the first group of projectors 71U located on the upper side, whereas the surface 143 is shown in FIG. 18D. In this way, the projector is formed so as to face the second group of projectors 71L located below. However, in this embodiment, not only the projector 71U but also the projector 71L is arranged above the horizontal plane. That is, the angle between the normal of the surface 142 and the rotation axis 141A of the normal of the surface 143 is less than 90 degrees. In this embodiment, the image of projector 71U is displayed on surface 142, and the image of projector 71L is displayed on surface 143.

  19A to 19D show still another embodiment of the screen. In this embodiment, the screen 161 is formed in a truncated pyramid shape. The screen 161 has three surfaces 162, 163, and 164, and is rotated about the rotation shaft 161A. 19B to 19D, the normal of the surface 162 and the angle of the rotating shaft 161A, the normal of the surface 163 and the angle of the rotating shaft 161A, and the angles of the surface 164 and the rotating shaft 161A are different from each other. Has been. The projector 71U is arranged at the uppermost position so as to face the surface 164 (FIG. 19D), the projector 71M is arranged in the middle so as to face the surface 163 (FIG. 19C), and the projector 71L faces the surface 162. As shown in FIG. 19B. Also in this embodiment, the angle between the normal line of each of the surfaces 162 to 164 and the rotation axis 161A is configured to be less than 90 degrees (the normal angle of the surface 162 is the largest, the surface 164 The angle of the normal line is the smallest, and the angle of the normal line of the surface 163 is an intermediate size between them).

  In the above description, the number of surfaces rotated by one rotation shaft is two or three, but it is of course possible to increase the number of surfaces. Further, the number of video cameras 11U and 11L or projectors 71U and 71L in each group may be 10 or less or 10 or more.

  Furthermore, the images displayed on each surface of the screen may be images of the same subject or different subjects. Still images may also be used.

  The present invention can be applied to an apparatus that displays a stereoscopic moving image.

It is a perspective view which shows the structural example of the imaging device to which this invention is applied. It is a side view explaining the relationship between the video camera of a 1st group and the video camera of a 2nd group. It is a block diagram which shows the functional structural example of an imaging device. It is a flowchart explaining an image photographing process. It is a perspective view which shows the structural example of the display apparatus to which this invention is applied. It is a side view explaining the relationship between the projector of the 1st group and the projector of the 2nd group. It is a top view which shows the relationship between a projector and a screen. It is a side view explaining the relationship between a projector and a screen. It is sectional drawing which shows the cross-sectional structural example of a screen. It is a perspective view which shows the structural example of the partial cross section of a screen. It is a figure explaining the slit of a control film. It is a figure explaining the arrangement | positioning angle of a projector and a screen. It is a figure which shows the characteristic of the brightness | luminance of the light from a screen. It is a block diagram which shows the functional structural example of the display apparatus to which this invention is applied. It is a flowchart explaining an image display process. It is a figure explaining the observation position corresponding to a projector. It is a perspective view which shows the structural example of other embodiment of the display apparatus to which this invention is applied. It is a figure which shows the structural example of other embodiment of a screen. It is a figure which shows the structural example of other embodiment of a screen.

Explanation of symbols

  1 imaging device, 11U, 11L video camera, 12 signal processing device, 31U, 31L storage, 32 encoding unit, 33 multiplexing unit, 34 recording unit, 35 controller, 61 display device, 71U, 71L projector, 72 signal processing device 73 screens

Claims (9)

A first surface for displaying an image corresponding to the light by receiving light from the first direction with respect to the rotation axis, and a second direction different from the first direction with respect to the rotation axis At least a second surface that displays an image corresponding to the light by receiving light from the first surface, and the first surface and the second surface are configured to receive and reflect light with respect to the surface, Screens each having an optical filter limited to a predetermined range including the normal of the surface;
Rotating means for rotating the screen around the rotation axis;
A first irradiating means disposed around the rotation axis and irradiating the screen with light corresponding to the image from the first direction;
A second irradiating means disposed around the rotation axis and irradiating the screen with light corresponding to the image from the second direction;
First reflecting means disposed around the rotation axis and reflecting the light from the first irradiation means to make it incident on the first surface of the screen;
A second reflecting means that is arranged around the rotation axis and reflects the light from the second irradiation means to be incident on the second surface of the screen ;
The screen is characterized in that the normal lines of the first surface and the second surface are different angles that are less than 90 degrees with respect to the rotation axis, respectively, and the cross section thereof is a trapezoidal shape. Display device. The screen further comprises a scattering plate that scatters light incident through the optical filter,
The optical filter includes: a first optical filter that restricts the incidence and reflection of light from the x-axis direction of the x-axis and the y-axis that define the surface; and the incidence and reflection of light from the y-axis direction. The display device according to claim 1, comprising: a second optical filter to be limited. The display device according to claim 2, wherein the optical filter is a light control film. The optical axis of the first irradiation means intersects the rotation axis at a first angle other than 90 degrees,
2. The display device according to claim 1, wherein an optical axis of the second irradiation unit intersects with the rotation axis at a second angle other than 90 degrees and different from the first angle. . The display device according to claim 1, wherein the first irradiation unit and the second irradiation unit irradiate light of different images. A first fisheye lens that projects light from the first irradiation unit onto the first reflecting unit;
The display device according to claim 1, further comprising a second fisheye lens that projects light from the second irradiation unit onto the second reflecting unit. The display device according to claim 1, wherein the first reflecting unit and the second reflecting unit are configured as flat mirrors. The display device according to claim 1, wherein the first reflecting unit and the second reflecting unit are configured as parabolic mirrors. A first surface for displaying an image corresponding to the light by receiving light from the first direction with respect to the rotation axis, and a second direction different from the first direction with respect to the rotation axis At least a second surface that displays an image corresponding to the light by receiving light from the first surface, and the first surface and the second surface are configured to receive and reflect light with respect to the surface, Screens each having an optical filter limited to a predetermined range including the normal of the surface;
Rotating means for rotating the screen around the rotation axis;
A first irradiating means disposed around the rotation axis and irradiating the screen with light corresponding to the image from the first direction;
A second irradiating means disposed around the rotation axis and irradiating the screen with light corresponding to the image from the second direction;
First reflecting means disposed around the rotation axis and reflecting the light from the first irradiation means to make it incident on the first surface of the screen;
A second reflecting means that is arranged around the rotation axis and reflects the light from the second irradiation means to be incident on the second surface of the screen ;
The screen is characterized in that the normal lines of the first surface and the second surface are different angles that are less than 90 degrees with respect to the rotation axis, respectively, and the cross section thereof is a trapezoidal shape. A display method for a display device, comprising:
A rotation step of rotating the screen about the rotation axis;
A first light that irradiates light corresponding to the image from the first direction around the rotation axis to the screen rotated by the processing of the rotation step via the first reflecting means. An irradiation step;
A first display for displaying an image corresponding to light from the first direction irradiated by the process of the first irradiation step on the first surface of the screen rotated by the process of the rotation step. Steps,
A second light that irradiates light corresponding to the image from the second direction around the rotation axis to the screen rotated by the process of the rotation step via the second reflecting means. An irradiation step;
A second display for displaying an image corresponding to light from the second direction irradiated by the processing of the second irradiation step on the second surface of the screen rotated by the processing of the rotation step. Including steps and
The display method, wherein the first irradiation step, the second irradiation step, the first display step, and the second display step are simultaneously performed.

Images