JP7616956B2 - All-around stereoscopic display device - Google Patents

Description

The present invention relates to an integral type all-around stereoscopic display device.

A rotating screen type image projection device that projects images in synchronization with a rapidly rotating screen is known as a technology that allows a stereoscopic image to be observed from all around 360 degrees (Non-Patent Document 1).

As shown in FIG. 9, the rotating screen type image projection device 100 includes an image projection unit 101, a reflecting mirror 102, a screen 103, and a rotating stage 104. The image projection unit 101 is a projector that projects a desired image. The reflecting mirror 102 includes a reflecting mirror 102a that reflects the projection light from the image projection unit 101 toward the reflecting mirror 102b, and a reflecting mirror 102b that reflects the reflected light from the reflecting mirror 102a toward the screen 103. The screen 103 displays the virtual reflection from the reflecting mirror 102. The rotating stage 104 is a base on which the image projection unit 101, the reflecting mirror 102, and the screen 103 are arranged on a flat surface.

The rotating stage 104 rotates at high speed by a rotary motor (not shown) so that the image projection unit 101, reflecting mirror 102, and screen 103 are integrated. In the example of FIG. 9, the rotating stage 104 rotates clockwise around the rotation axis A. At this time, the image projection unit 101 projects an image corresponding to the rotation angle of the screen 103 onto the screen 103 via the reflecting mirror 102. In this way, the rotating screen image projection device 100 can display a stereoscopic image B in a 360-degree circle.

In the technology described in Non-Patent Document 1, a flat image is projected onto the screen 103, so the observer cannot get a sense of three-dimensionality. Therefore, in the technology described in Non-Patent Document 1, the screen 103 is made directional, and the image projection unit 101 quickly switches between the right eye image and the left eye image, so that the observer can get a sense of three-dimensionality due to binocular parallax (hereinafter referred to as "conventional technology").

Gregg Favalora et al., “Volumetric three-dimensional display system with rasterization hardware,” Proc. SPIE 4297, Stereoscopic Displays and Virtual Reality Systems VIII, pp. 227-235, 2001

In the conventional technology described above, in order to present different images to the left and right eyes of the observer, the observer's left and right eyes must be positioned perpendicular to the rotation axis A of the screen 103. In other words, in this conventional technology, the observer's left and right eyes must be aligned horizontally. Therefore, in the conventional technology, the alignment direction of the observer's eyes is limited to the horizontal direction, and there is a problem that if the eyes are not aligned horizontally, the observer cannot obtain a stereoscopic effect. Note that the alignment direction of the eyes represents the direction of the straight line connecting the centers of the left and right eyes.

The objective of the present invention is to provide a 360-degree stereoscopic display device that does not restrict the alignment direction of the observer's eyes.

To solve the above problem, the all-around stereoscopic display device according to the present invention is a all-around stereoscopic display device that includes one or more basic stereoscopic display sets, each of which is a combination of a display element that displays integral-type elemental images, a lens array that emits light from the display element, and a reflecting means that reflects the light from the lens array, and is configured to include a rotation mechanism and a control means.

In the basic stereoscopic display set, the display element and the lens array are arranged in parallel, and the reflecting means is arranged obliquely with respect to the lens array so that one end side of the reflecting means is closer to the lens array and the other end side is farther away from the lens array.
The rotation mechanism rotates the stereoscopic display basic set with the normal to a plane parallel to the display element and the lens array as the rotation axis, so that one end side is the rotation axis and the other end side is the outer periphery side of the rotation axis.
The control means receives the viewpoint position of the observer and the rotation angle of the stereoscopic display basic set, and causes the display device to display the elemental images in accordance with the viewpoint position and rotation angle that have been input.

With this configuration, the omnidirectional stereoscopic display device forms a cylindrical virtual stereoscopic image inside the rotating basic stereoscopic display set. In this case, since the integral method of the omnidirectional stereoscopic display device has a viewing zone in two dimensions (horizontal and vertical directions), the arrangement direction of the observer's eyes is not restricted to the horizontal direction when observing the virtual stereoscopic image.

As a reference example , a 360° stereoscopic display device is an 360° stereoscopic display device having a plurality of 360° display basic sets, each of which is a combination of a display element that displays integral-type elemental images, a lens array that emits light from the display element, and a reflecting means that reflects light from the lens array, and is configured to include a control means.

In the basic stereoscopic display set, the display element and the lens array are arranged in parallel, and the reflecting means is arranged obliquely with respect to the lens array so that one end side of the reflecting means is closer to the lens array and the other end side is farther away from the lens array.
The multiple stereoscopic display basic sets are arranged radially around the normal to a plane parallel to the display element and the lens array, with one end side on the normal side and the other end side on the outside of the normal line.
The control means receives an input of the viewpoint position of the observer, and causes the display device to display elemental images in accordance with the input viewpoint position and the angle of the stereoscopic display basic set on the plane.

With this configuration, the all-around stereoscopic display device forms a prismatic virtual image inside the radially arranged stereoscopic display basic set. In this case, since the integral method of the all-around stereoscopic display device has a viewing zone in two dimensions, the arrangement direction of the observer's eyes is not restricted to the horizontal direction when observing a stereoscopic virtual image.

According to the present invention, there are no restrictions on the arrangement direction of the observer's eyes.

1 is a schematic configuration diagram of a 360-degree stereoscopic display system according to a first embodiment. FIG. 2 is an explanatory diagram for explaining formation of a stereoscopic image by a stereoscopic display basic set in the first embodiment. FIG. 4 is an explanatory diagram for explaining display of an element image in the first embodiment. FIG. 4 is an explanatory diagram illustrating allocation of color information for each region in the first embodiment. 4 is an explanatory diagram illustrating a correspondence relationship between color information for each region and color information of a display element in the first embodiment. FIG. FIG. 11 is a schematic configuration diagram of a full-circumference stereoscopic display system according to a second embodiment. FIG. 11 is an explanatory diagram for explaining formation of a stereoscopic image by a stereoscopic display basic set in the second embodiment. FIG. 13 is a schematic diagram illustrating the configuration of a 360° stereoscopic display system according to a modified example. FIG. 1 is a schematic diagram of a conventional screen rotation type image projection device.

Each embodiment of the present invention will be described below with reference to the drawings. However, each embodiment described below is intended to embody the technical concept of the present invention, and unless otherwise specified, the present invention is not limited to the following. In addition, the same symbols are used for the same means, and descriptions thereof may be omitted.

First Embodiment
[Configuration of 360-degree stereoscopic display system]
The configuration of a 360-degree stereoscopic display system 1 according to the first embodiment will be described with reference to FIG.
The omnidirectional stereoscopic display system 1 performs integral stereoscopic display all around. That is, in the omnidirectional stereoscopic display system 1, an observer (not shown) can observe a stereoscopic image from all directions of 360 degrees. As shown in FIG. 1, the omnidirectional stereoscopic display system 1 includes a viewpoint position detection device 2 and a omnidirectional stereoscopic display device 3.

The viewpoint position detection device 2 detects the viewpoint position (positions of both the left and right eyes) of the observer. For example, the viewpoint position detection device 2 is attached to the ceiling so that it can detect the viewpoint positions of observers around the 360-degree stereoscopic display device 3. The viewpoint position detection device 2 detects the viewpoint position of the observer 240 times per second. In this embodiment, the viewpoint position detection device 2 performs general viewpoint position detection processing, such as infrared viewpoint position detection processing and viewpoint position processing from camera images. The viewpoint position detection device 2 then outputs the detected viewpoint position of the observer to the 360-degree stereoscopic display device 3. In this embodiment, it is assumed that there is one observer whose viewpoint position is to be detected.

The viewpoint position detection device 2 can communicate with the 360-degree stereoscopic display device 3 (more precisely, the control means 50) by any method, whether wired or wireless. In this embodiment, the viewpoint position detection device 2 communicates with the 360-degree stereoscopic display device 3 via a wireless communication line such as Wi-Fi (registered trademark) or Bluetooth (registered trademark).

The omnidirectional stereoscopic display device 3 rotates at high speed to display stereoscopic images in a 360-degree all-around direction. The configuration of the omnidirectional stereoscopic display device 3 will be specifically described below with reference to Fig. 1. As shown in Fig. 1, the omnidirectional stereoscopic display device 3 includes a stereoscopic display basic set 30, a rotation mechanism 40, and a control means 50.
1 shows a three-dimensional coordinate system with the horizontal direction being the x-axis, the vertical direction being the y-axis, and the depth direction being the z-axis. The origin O of this three-dimensional coordinate system is the center of a virtual image S, which will be described later.

[Configuration of 360-degree stereoscopic display device]
The stereoscopic display basic set 30 rotates at high speed clockwise along the xz plane (horizontal plane) to form a stereoscopic image all around due to the afterimage effect. As shown in FIG. 1, the stereoscopic display basic set 30 is a set of a display element 31, a lens array 32, and a reflecting means 33.

The display element 31 displays an integral type element image. For example, the display element 31 is a general flat panel display such as a liquid crystal display or a plasma display. In this embodiment, the display element 31 has a rectangular shape and displays an element image input from the control means 50 described below.

The lens array 32 emits light from the display element 31. In other words, the lens array 32 is a typical lens array in the integral system, and controls the direction of light from the display element 31. For example, the lens array 32 has element lenses 32a, which are tiny circular convex lenses, arranged in a two-dimensional array in the x-axis and z-axis directions. The lens array 32 has a rectangular shape and is approximately the same size as the display element 31.

The reflecting means 33 reflects the light from the lens array 32 (for example, a general reflecting mirror). In this embodiment, the lens array 32 reflects the light incident from the vertical direction toward the horizontal direction where the observer is located. The reflecting means 33 has a rectangular shape, and is approximately the same size as the display element 31 and the lens array 32 when viewed from the vertical direction.

In addition, in FIG. 1, the virtual image 31K of the display element 31 formed by the reflecting means 33, the virtual image 32K of the lens array 32 formed by the reflecting means 33, and the cylindrical virtual image S are illustrated by thin lines (details will be described later).

As shown in FIG. 1, in the stereoscopic display basic set 30, the display element 31 and the lens array 32 are arranged parallel (e.g., horizontally). In addition, in the stereoscopic display basic set 30, the reflecting means 33 is arranged diagonally (e.g., at a 45 degree angle) so that one end side 33n of the reflecting means 33 is closer to the lens array 32 and the other end side 33f of the reflecting means 33 is farther away. The stereoscopic display basic set 30 may also include a holding member (not shown) that holds the display element 31, the lens array 32, and the reflecting means 33.

The rotation mechanism 40 rotates the stereoscopic display basic set 30 so that the normal to a plane (x-z plane) parallel to the display element 31 and the lens array 32 is the rotation axis A, and one end side 33n is on the rotation axis A side (center side) and the other end side 33f is on the outer periphery side of the rotation axis A.

As shown in FIG. 1 , the rotation mechanism 40 includes a rotation motor 41 and a support arm 42 .
The rotation motor 41 rotates the stereoscopic display basic set 30 supported by the support arm 42 around a rotation axis A. In this embodiment, the rotation motor 41 rotates the stereoscopic display basic set 30 clockwise 60 times per second. For example, the rotation motor 41 is a rotation motor with an encoder, and outputs a rotation angle θ ( FIG. 2 ) of the stereoscopic display basic set 30 to the control means 50.

The support arm 42 is an inverted L-shaped arm that supports the stereoscopic display basic set 30. Specifically, the support arm 42 is attached to the rotary motor 41, and is extended horizontally and then bent at a right angle at a predetermined position.

The control means 50 receives the observer's viewpoint position from the viewpoint position detection device 2 and the rotation angle θ of the stereoscopic display basic set 30 from the rotation mechanism 40. The control means 50 then displays the element image on the display element 31 according to the input viewpoint position and rotation angle θ. In this embodiment, the control means 50 displays the element image generated by the ray tracing method on the display element 31, as described below.

The control means 50 is disposed on the rear side (lower side in the drawing) of the display element 31, but its location is not particularly limited. For example, the control means 50 may be disposed on the floor like a general computer (not shown).

<Creating a stereoscopic image using the stereoscopic display basic set>
The formation of a stereoscopic image by the stereoscopic display basic set 30 will be described in detail with reference to Fig. 2. Note that in Fig. 2, the visual point position detection device 2 and the control means 50 are omitted in order to make the drawing easier to understand.

As shown in FIG. 2, light L of an element image displayed by the display element 31 is incident on element lenses 32a constituting the lens array 32. The light L incident on element lens 32a exits from the lens surface on the opposite side, travels vertically, and is reflected horizontally by reflecting means 33. The light L reflected by reflecting means 33 then enters both eyes of the observer. From the observer's perspective, this light L reflected by reflecting means 33 is equivalent to light that exits virtual image 32aK of element lens 32a and travels horizontally. In this way, virtual image 32aK of element lens 32a is formed in the stereoscopic display basic set 30B.

As described above, the stereoscopic display basic set 30 rotates clockwise at high speed around the rotation axis A. Here, in the virtual image 32aK of each element lens 32a, attention is focused on the line C that connects the midpoints of the sides perpendicular to the rotation axis A. As the stereoscopic display basic set 30 rotates at high speed, the trajectory of the line C forms a cylindrical virtual image S. This virtual image S is the virtual image 32aK of the element lenses 32a formed all around, so it appears as a stereoscopic image to the naked eye of the observer.

The rotation angle θ is the angle by which the 3D display basic set 30 is rotated on the x-z plane, and represents the position of the 3D display basic set 30 relative to a specific direction (e.g., the z-axis). Figure 2 illustrates the 3D display basic set 30 rotated from 0 degrees to 90 degrees.

<Display of elemental images according to viewpoint position and rotation angle>
The display of elemental images according to the viewpoint position and the rotation angle θ will be described with reference to FIGS.
In this embodiment, the control means 50 generates an element image according to the viewpoint position and the rotation angle θ, and outputs the generated element image to the display element 31. At this time, the control means 50 uses a ray tracing method to generate an element image according to the viewpoint position and the rotation angle θ from the three-dimensional model M of the subject. In this way, since the control means 50 generates a stereoscopic image of the three-dimensional model M by light rays, it is possible to give the observer a stereoscopic effect all around 360 degrees without imposing any restrictions on the arrangement direction of the observer's eyes.

When generating elemental images using ray tracing, the control means 50 may assign color information not only to each single viewpoint position, but also to each region including multiple viewpoint positions. Here, the user of the omnidirectional stereoscopic display system 1 manually sets whether to assign color information to each viewpoint position or to each region w.

<<Assignment of color information to each viewpoint>>
The allocation of color information for each viewpoint position p will be described with reference to FIG.
3 based on the rotation angle θ of the stereoscopic display basic set 30. Specifically, the control means 50 determines the positions of the display element 31 and the lens array 32 from the rotation angle θ of the stereoscopic display basic set 30. Then, the control means 50 determines the positions of the reflecting means 33 that are plane-symmetrical to the positions of the display element 31 and the lens array 32 as the positions of the virtual image 31K of the display element 31 and the virtual image 32K of the lens array 32.

Here, we focus on the light ray L1 that passes through the principal point of the virtual image 32aK of the element lens 32a and is observed at a certain viewpoint position p. Next, the control means 50 determines the pixel that is the intersection of the three-dimensional model M and the light ray L1, and extracts color information e1 (e.g., luminance value, RGB value) of that pixel from the three-dimensional model M. The control means 50 also assigns the extracted color information e1 as color information e2 of the corresponding pixel position in the virtual image 31K of the display element 31. The control means 50 then performs the same processing as for the light ray L1 on the virtual images 32aK of all the element lenses 32a.

Note that color information cannot be assigned to ray L2, which is shown by a dashed dotted line, since there is no intersection with the three-dimensional model M. In this case, "black" may be assigned to the corresponding pixel position in the virtual image 31K of the display element 31 as color information representing the background of the three-dimensional model M. Furthermore, color information cannot be assigned to ray L3, which is shown by a dotted line, since there is no corresponding pixel position in the virtual image 31K of the display element 31.

<<Assignment of color information to each area>>
The allocation of color information for each region w will be described with reference to FIG.
As shown in Fig. 4, when the viewpoint position p exists on the z-axis, the control means 50 sets an area w that includes the viewpoint position p and is parallel to the xy plane. Here, a planar area w is set, but the control means 50 may set a curved surface that includes the viewpoint position p as the area w. Then, at this viewpoint position p, the control means 50 assigns color information in the same manner as in Fig. 3. Furthermore, at another viewpoint position p _i , the control means 50 assigns color information in the same manner as in Fig. 3.

Consider a case where nine viewpoint positions are set in the region w. In this case, the control means 50 assigns nine pieces of color information _e2i (i=1, 2, ..., 9) to one virtual image 32aK. Fig. 5 illustrates the correspondence between the color information _e2i assigned to one virtual image 32aK and the nine pieces of color information _e3i displayed on the display element 31. As shown in Fig. 5, the color information _e2i and _e3i correspond one-to-one.

[Action and Effects]
As described above, in the omnidirectional stereoscopic display device 3 according to the first embodiment, a cylindrical virtual image S is formed inside the rotating stereoscopic display basic set 30. At this time, since the integral method of the omnidirectional stereoscopic display device 3 has a viewing zone in a two-dimensional direction, the arrangement direction of the observer's eyes is not limited to the horizontal direction. In other words, in the omnidirectional stereoscopic display device 3, when the observer observes the virtual image S, a sense of three-dimensionality can be obtained even if the observer's eyes are not aligned horizontally as in the conventional technology.

Although the first embodiment has been described in detail above, the present invention is not limited to the above-described embodiment, and includes design modifications and the like within the scope of the present invention.
In the above embodiment, the reflecting means 33 is described as a reflecting mirror, but it may be a half mirror (semi-transparent mirror). In this case, augmented reality (AR) is realized, and the observer can observe the stereoscopic image superimposed on the actual background.

In the above embodiment, the stereoscopic display basic set 30 is described as being one set, but the stereoscopic display basic set 30 may be multiple sets. For example, the omnidirectional stereoscopic display device 3 may be provided with two sets of stereoscopic display basic sets 30 facing each other. In this case, the omnidirectional stereoscopic display device 3 can reduce the rotation speed of the stereoscopic display basic set 30.

In the above embodiment, it has been described that there is one observer, but there may be multiple observers. When there are multiple observers, the omnidirectional stereoscopic display device 3 may display element images in a time-division manner according to the number of observers.

In the above embodiment, the stereoscopic display is performed around the entire 360 degrees, but the stereoscopic display may be performed only within a desired range instead of around the entire perimeter.

Second Embodiment
[Configuration of 360-degree stereoscopic display system]
With reference to FIG. 6, the configuration of a full-circumference stereoscopic display system 1B according to the second embodiment will be described with respect to differences from the first embodiment.
In the first embodiment, all-around three-dimensional display is realized by rotating one three-dimensional display basic set 30 (FIG. 1) at high speed. In contrast, in the second embodiment, a plurality of three-dimensional display basic sets 30B are radially arranged to realize all-around three-dimensional display, which is different from the first embodiment.

As shown in FIG. 6, a 360° type stereoscopic display system 1B includes a viewpoint position detection device 2 and a 360° type stereoscopic display device 3B.
The viewpoint position detecting device 2 is similar to that in the first embodiment, and therefore a description thereof will be omitted.

[Configuration of 360-degree stereoscopic display device]
The configuration of the all-around stereoscopic display device 3 will be specifically described below with reference to Fig. 6. The all-around stereoscopic display device 3B displays stereoscopic images all around 360 degrees using stereoscopic display basic sets 30B arranged radially. As shown in Fig. 6, the all-around stereoscopic display device 3B includes a plurality of (e.g., eight) stereoscopic display basic sets 30B (30B ₁ to 30B ₈ ) and a control means 50B. Note that the all-around stereoscopic display device 3B does not need to include the rotation mechanism 40 (Fig. 1).

The multiple 3D display basic sets 30B are radially arranged at equal intervals from each other on a plane (x-z plane) parallel to the display element 31 and the lens array 32. In the example of FIG. 6, there are eight 3D display basic sets 30B, so that the interval between adjacent 3D display basic sets 30B on the x-z plane is 45 degrees (the angle φ described below is 45 degrees apart).

As shown in FIG. 6, the stereoscopic display basic set 30B is a combination of a display element 31, a lens array 32, and a reflecting means 33B. Note that the display element 31 and the lens array 32 are the same as those in the first embodiment, and therefore a description thereof will be omitted.

The reflecting means 33B has an inverted trapezoidal shape so that adjacent reflecting means 33B are arranged with no gaps between them. Therefore, when viewed from the vertical direction, the reflecting means 33B is larger than the display element 31 and the lens array 32. In other respects, the reflecting means 33B is similar to that of the first embodiment, so further explanation will be omitted.

Here, in the stereoscopic display basic set 30B, the display element 31 and the lens array 32 are arranged parallel (for example, horizontally). Also, in the stereoscopic display basic set 30B, the reflecting means 33B is arranged diagonally (for example, at a 45 degree angle) with one end side 33n of the reflecting means 33B closer to the lens array 32 and the other end side 33f of the reflecting means 33B farther away. Therefore, eight sets of multiple stereoscopic display basic sets 30B are arranged radially with the normal line D of a plane parallel to the display element 31 and the lens array 32 as the center, with one end side 33n on the normal line D side (center side) and the other end side 33f on the outside of the normal line D.

The control means 50B receives the observer's viewpoint position from the viewpoint position detection device 2. The control means 50B then displays the elemental images on the display element 31 according to the input viewpoint position and the angle φ of the stereoscopic display basic set on the plane.

In the first embodiment described above, the control means 50 (FIG. 1) determines the positions of the virtual image 31K of the display element 31 and the virtual image 32K of the lens array from the rotation angle θ of the stereoscopic display basic set 30, which rotates at high speed. In contrast, the angle φ of the stereoscopic display basic set 30B is predetermined, so the control means 50B only needs to determine the positions of the virtual image 31K of the display element 31 and the virtual image 32K of the lens array from this angle φ. In other respects, the control means 50B is similar to the first embodiment, so further explanation will be omitted.

The angle φ of the 3D display basic set 30B represents the angle of the 3D display basic set 30B on the x-z plane with a specific direction (e.g., the z-axis) as the reference.

<Creating a stereoscopic image using the stereoscopic display basic set>
The formation of a stereoscopic image by the stereoscopic display basic set 30B will be described in detail with reference to FIG. 7. As shown in FIG. 7, in the stereoscopic display basic set 30B ₁ , the light L of the element image displayed by the display element 31 is incident on the element lenses 32a constituting the lens array 32. The light L incident on the element lenses 32a is emitted from the lens surface on the opposite side, travels vertically, and is reflected horizontally by the reflecting means 33B. Thereafter, the light L reflected by the reflecting means 33B is incident on both eyes of the observer. From the observer's perspective, the light L reflected by the reflecting means 33B is equivalent to the light that travels horizontally after emitting the virtual image 32aK of the element lenses 32a. In this way, in the stereoscopic display basic set 30B ₁ , the virtual image 32aK of the element lenses 32a is formed.

In the other stereoscopic display basic sets 30B ₂ to 30B ₈ , virtual images 32aK of element lenses 32a are formed, similarly to stereoscopic display basic set 30B _1. As a result, an octagonal prism-shaped virtual image T is formed by the eight stereoscopic display basic sets 30B ₁ to 30B _8. This virtual image T is the virtual image 32aK of element lenses 32a formed all around, and therefore appears as a stereoscopic image to the naked eye of the observer.

[Action and Effects]
According to this configuration, in the all-around stereoscopic display device 3B, the reflecting means 33 forms a prismatic virtual image T inside the radially arranged stereoscopic display basic set 30B. At this time, since the integral method of the all-around stereoscopic display device 3B has a viewing zone in a two-dimensional direction, when the observer observes a virtual image of a stereoscopic image, the arrangement direction of the observer's eyes is not limited to the horizontal direction. In other words, in the all-around stereoscopic display device 3B, when the observer observes the virtual image T, a three-dimensional effect can be obtained even if the observer's eyes are not horizontally aligned as in the conventional technology.

The second embodiment has been described above in detail, but the present invention is not limited to the above embodiment and also includes design modifications within the scope of the present invention.

In the above embodiment, the 3D display basic set 30B is described as having eight pairs, but it may be two or more pairs (for example, four pairs). Here, when the 3D display basic set 30B has n pairs, the angle φ between adjacent 3D display basic sets 30B is 360/n degrees.

In the above embodiment, the display element 31 and the lens array 32 are separate in the eight basic stereoscopic display sets 30B, but this is not limited to the above. In other words, as shown in FIG. 8, the display element 31C and the lens array 32C may be integrated. The display element 31C and the lens array 32C in FIG. 8 are the display element 31 and the lens array 32 in FIG. 6 formed in one piece.

1, 1B Full-circumference stereoscopic display system 2 Viewpoint position detection device 3, 3B Full-circumference stereoscopic display device 30, 30B Stereoscopic display basic set 31 Display element 32 Lens array 32a Element lens 33, 33B Reflection means 40 Rotation mechanism 41 Rotation motor 42 Support arm 50, 50B Control means

Claims (4)

A full-circumference stereoscopic display device comprising one or more stereoscopic display basic sets each including a display element for displaying an integral type element image, a lens array for emitting light from the display element, and a reflecting means for reflecting light from the lens array,
In the stereoscopic display basic set, the display element and the lens array are arranged in parallel, and the reflecting means is arranged obliquely so that one end side of the reflecting means is close to the lens array and the other end side is farther away from the lens array,
a rotation mechanism that rotates the stereoscopic display basic set with a normal line of a plane parallel to the display element and the lens array as a rotation axis, so that the one end side is on the rotation axis side and the other end side is on the outer periphery side with respect to the rotation axis;
a control means for inputting a viewpoint position of an observer and a rotation angle of the stereoscopic display basic set, and for displaying the element images on the display device in accordance with the viewpoint position and the rotation angle that have been input;
A 360° stereoscopic display device comprising: 2. The all-around stereoscopic display device according to claim 1, wherein in the stereoscopic display basic set, the display element and the lens array are arranged horizontally, and the reflecting means is arranged at an angle of 45 degrees to the lens array. 3. The all-around stereoscopic display device according to claim 1 , wherein the control means causes the display element to display the elemental images generated by a ray tracing method. 4. The all-around type stereoscopic display device according to claim 1, wherein the reflecting means is a reflecting mirror or a half mirror.

Images