Cylindrical space stereoscopic display device

Abstract

In order to solve the problem that in a spatial stereoscopic display device with a higher degree of reality formed by a folded surface composed of multiple stereoscopic display panels, each stereoscopic display panel has a specific optimal viewing range, and the directional position of each stereoscopic display panel is fixed, on the one hand, it is difficult to match the viewpoint position of each stereoscopic display panel, and on the other hand, the viewpoint space position range is usually limited, and it is impossible to provide stereoscopic images in all directions, and the viewing range is limited, the present invention provides a cylindrical spatial stereoscopic display device. The cylindrical spatial stereoscopic display device includes a transparent shell, a cylindrical transparent liquid crystal display, a directional light source and a camera, wherein the cylindrical transparent liquid crystal display provides a parallax image, and the directional light source that can rotate around the cylindrical axis forms a viewpoint, thereby effectively increasing the viewing range of the spatial stereoscopic display device.

Description

Technical Field

[0001] The present invention belongs to the technical field of stereoscopic display, and more specifically, relates to a cylindrical space stereoscopic display device. Background Art

[0002] Using multiple stereoscopic display panels to form a folding surface can form a spatial stereoscopic display device with higher realism. However, since each stereoscopic display panel has a specific optimal viewing range and the directional position of each stereoscopic display panel is fixed, on the one hand, it is difficult to match the viewpoint position of each stereoscopic display panel, and on the other hand, its viewpoint space position range is usually limited, and it is impossible to provide stereoscopic images in all directions, and the viewing range is limited. For this reason, the present invention provides a cylindrical spatial stereoscopic display device. The cylindrical spatial stereoscopic display device proposed by the present invention provides parallax images by a cylindrical transparent liquid crystal display, and forms a viewpoint by a directional light source that can rotate around the cylindrical axis, thereby effectively increasing the viewing range of the spatial stereoscopic display device. Summary of the invention

[0003] In order to solve the problem that in a spatial stereoscopic display device with higher realism formed by a folded surface composed of multiple stereoscopic display panels, since each stereoscopic display panel has a specific optimal viewing range and the directional position of each stereoscopic display panel is fixed, on the one hand, it is difficult to match the viewpoint position of each stereoscopic display panel, and on the other hand, the viewpoint spatial position range is usually limited, and stereoscopic images cannot be provided in all directions, and the viewing range is limited, the present invention provides a cylindrical spatial stereoscopic display device.

[0004] The cylindrical space stereoscopic display device comprises a transparent shell, a cylindrical transparent liquid crystal display, a directional light source and a camera.

[0005] The cylindrical transparent liquid crystal display is installed in a transparent shell, the interior of the cylinder is a hollow structure, and is used to provide parallax images.

[0006] The directional light source is a plane, which is installed inside the cylinder of the cylindrical transparent liquid crystal display and can rotate around the cylinder axis of the cylindrical transparent liquid crystal display.

[0007] The camera is used to capture and determine the position of the human eye so that the directional light source is directed toward the human eye, specifically, the normal of the directional light source. k The cylindrical axis of the cylindrical transparent liquid crystal display φ The plane is the surface k - φ, Cylinder axis of cylindrical transparent liquid crystal display φ and eye position e The plane is the surface φ-e ,noodle k - φ Kneading noodles φ-eThe angle does not exceed ±20°.

[0008] The directional light source is composed of a light source array and a lens array, which can light up some of the light sources in the light source array and project the light emitted by the light source to the viewpoint position through the lens array. When the light is projected to a certain viewpoint position, the cylindrical transparent liquid crystal display simultaneously provides a parallax image corresponding to the viewpoint position, and the human eye can see the corresponding parallax image at the viewpoint position.

[0009] Optionally, the directional light source is composed of a light source array and a cylindrical lens grating, and only provides viewpoints arranged in one-dimensional direction.

[0010] The cylindrical transparent liquid crystal display provides parallax images according to the following rules:

[0011] Assume that the disparity image is located at the position of the directional light source, and the spatial coordinates of a certain pixel A on it are ( j 1, i 1, k 1), the coordinate origin is located at the center of the directional light source, where j is the up and down coordinate, i is the horizontal coordinate, k is the normal direction coordinate of the directional light source, which should be in the cylindrical transparent liquid crystal display space coordinate ( j 2, i 2, k 2) Pixel B at position is displayed, and pixel A along k The distance from the direction to the human eye is D1, and pixel B is along k The distance from the direction to the human eye is D2, and the cylindrical radius of the cylindrical transparent liquid crystal display is r, then it should satisfy j 1 / j 2=D1 / D2, i 1 / i 2 = D1 / D2, (D1-D2) 2 + j 2 2 =r 2 , k 1=0, k 2=D1-D2.

[0012] The technical principles of the present invention are as follows:

[0013] 1. The camera captures and determines the position of the human eye;

[0014] 2. The directional light source rotates and faces the human eye position, and the viewpoint is generated at the same time;

[0015] 3. When a certain viewpoint is generated, the cylindrical transparent liquid crystal display simultaneously provides a parallax image corresponding to the viewpoint position;

[0016] 4. When a person's left and right eyes are located at different viewpoints, they see different parallax images, thus producing stereoscopic vision.

[0017] In summary, since the present invention can rotate around the axis through a directional light source, its viewpoint position can be generated in any spatial direction around the cylindrical axis. Compared with the spatial stereoscopic display composed of a plurality of traditional fixed-plane stereoscopic displays, it can solve the problem of viewpoint matching between different stereoscopic displays on the one hand, and on the other hand, it can effectively increase the spatial range of generated viewpoints, so that the viewer can see the stereoscopic image through the transparent shell from any surface that is not perpendicular to the cylindrical transparent liquid crystal display. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the directional light source of the present invention.

[0020] Figure 3 This is a schematic diagram of the principle of implementing pixel mapping in the present invention.

[0021] Figure 4 It is a schematic diagram of another embodiment of the present invention having a triangular prism transparent shell.

[0022] Icons: 100 - transparent shell; 200 - cylindrical transparent liquid crystal display; 300 - camera; 400 - directional light source; 410 - light source array; 420 - cylindrical lens grating; 500 - human eye; 501 - first viewpoint; 502 - second viewpoint; 503 - third viewpoint; 504 - fourth viewpoint; 600 - parallax image.

[0023] It should be understood that the above drawings are only schematic and are not drawn to scale. DETAILED DESCRIPTION

[0024] Figure 1 A cylindrical space stereoscopic display device is provided in this embodiment.

[0025] The cylindrical spatial stereoscopic display device includes a transparent casing 100 , a cylindrical transparent liquid crystal display 200 , a directional light source 400 and a camera 300 .

[0026] The transparent casing 100 is a cuboid having six faces.

[0027] The cylindrical transparent liquid crystal display 200 is installed in the transparent housing 100 , and the interior of the cylindrical surface is a hollow structure, and is used to provide parallax images.

[0028] The directional light source 400 is a plane, installed inside the cylinder of the cylindrical transparent liquid crystal display 200, and it can rotate around the cylinder axis of the cylindrical transparent liquid crystal display 200. φ Rotate.

[0029] The camera 300 is used to capture and determine the position of the human eye 500 so that the directional light source 400 is directed toward the human eye 500. Specifically, the normal of the directional light source 400 is k The cylindrical axis of the cylindrical transparent liquid crystal display 200 φ The plane is the surface k - φ, Cylinder axis of cylindrical transparent liquid crystal display 200 φ and human eye 500 position e The plane is the surface φ-e ,noodle k - φ Kneading noodles φ- e The angle does not exceed ±20°.

[0030] Please refer to Figure 2 The directional light source 400 is composed of a light source array 410 and a cylindrical lens grating 420, which can light up some of the light sources in the light source array 410 and project the light emitted by the light source to the viewpoint position through the cylindrical lens grating 420. Figure 2 As shown, a first viewpoint 501, a second viewpoint 502, a third viewpoint 503 and a fourth viewpoint 504 can be formed in space respectively.

[0031] When the light is projected to a certain viewpoint, the cylindrical transparent liquid crystal display 200 synchronously provides a parallax image corresponding to the viewpoint, and the human eye can see the corresponding parallax image at the viewpoint.

[0032] Please refer to Figure 3 , the cylindrical transparent liquid crystal display 200 provides a parallax image according to the following rules:

[0033] Assume that the parallax image 600 is located at the position of the directional light source 400 and coincides with it. The spatial coordinates of a certain pixel A on it ( j 1, i 1, k 1)=(8.18, 5, 0) is in centimeters, and the origin of the coordinate is located at the center of the directional light source 400, where j is the up and down coordinate, i is the horizontal coordinate, k is the normal direction coordinate of the directional light source, which should be in the cylindrical transparent liquid crystal display 200 space coordinate ( j 2, i 2, k2)=(6, 3.67, 8) is displayed for pixel B in centimeters, and pixel A along k The distance from the direction to the human eye is D1 = 30 cm, and the pixel B is along k The distance from the direction to the human eye is D2 = 22 cm, and the cylindrical radius of the cylindrical transparent liquid crystal display 200 is r = 10 cm, then it should satisfy j 1 / j 2=D1 / D2, i 1 / i 2 = D1 / D2, (D1-D2) 2 + j 2 2 =r 2 , k 1=0, k 2=D1-D2.

[0034] The technical principles of the present invention are as follows:

[0035] 1. The camera 300 captures and determines the position of the human eye 500;

[0036] 2. The directional light source 400 rotates and faces the position of the human eye 500, and a viewpoint is generated at the same time;

[0037] 3. When a certain viewpoint is generated, the cylindrical transparent liquid crystal display 200 synchronously provides a parallax image corresponding to the viewpoint position;

[0038] 4. When a person's left and right eyes are located at different viewpoints, they see different parallax images, thus producing stereoscopic vision.

[0039] like Figure 4 As shown in FIG. 1 , another embodiment of the present invention is shown, wherein the transparent housing 100 is a triangular prism transparent housing having five faces. The transparent housing 100 has exactly the same working principle as the previous embodiment, and thus it can be seen that the transparent housing 100 in the present invention can be of any shape.

[0040] In summary, since the present invention can rotate around the axis through the directional light source 400, its viewpoint position can be generated in any spatial direction around the cylindrical axis. Compared with the spatial stereoscopic display composed of a plurality of traditional fixed-plane stereoscopic displays, it can solve the problem of viewpoint matching between different stereoscopic displays on the one hand, and on the other hand, it can effectively increase the spatial range of generated viewpoints, so that the viewer can see the stereoscopic image through the transparent shell 100 from any surface that is not perpendicular to the cylindrical transparent liquid crystal display 200.

Claims

1. A cylindrical space stereoscopic display device, characterized in that: The cylindrical space stereoscopic display device comprises a transparent shell, a cylindrical transparent liquid crystal display, a directional light source and a camera; The cylindrical transparent liquid crystal display is installed in a transparent housing, the interior of the cylinder is a hollow structure, and is used to provide parallax images; The directional light source is a plane, which is installed inside the cylinder of the cylindrical transparent liquid crystal display and can rotate around the cylinder axis of the cylindrical transparent liquid crystal display; The camera is used to capture and determine the position of the human eye so that the directional light source is directed toward the human eye, specifically, the normal of the directional light source. k The cylindrical axis of the cylindrical transparent liquid crystal display φ The plane is the surface k - φ, Cylinder axis of cylindrical transparent liquid crystal display φ and eye position e The plane is the surface φ-e ,noodle k - φ Kneading noodles φ-e The angle does not exceed ±20°; The directional light source is composed of a light source array and a lens array, which can light up some of the light sources in the light source array and project the light emitted by the light source to the viewpoint position through the lens array; when the light is projected to a certain viewpoint position, the cylindrical transparent liquid crystal display synchronously provides a parallax image corresponding to the viewpoint position, and the human eye can see the corresponding parallax image at the viewpoint position; The cylindrical transparent liquid crystal display provides parallax images according to the following rules: Assume that the disparity image is located at the position of the directional light source, and the spatial coordinates of a certain pixel A on it are ( j 1, i 1, k 1), the coordinate origin is located at the center of the directional light source, where j is the up and down coordinate, i is the horizontal coordinate, k is the normal direction coordinate of the directional light source, which should be in the cylindrical transparent liquid crystal display space coordinate ( j 2, i 2, k 2) Pixel B at position is displayed, and pixel A along k The distance from the direction to the human eye is D1, and pixel B is along k The distance from the direction to the human eye is D2, and the cylindrical radius of the cylindrical transparent liquid crystal display is r, then it should satisfy j 1 / j 2=D1 / D2, i 1 / i 2 = D1 / D2, (D1-D2) 2 + j 2 2 =r 2 , k 1=0, k 2=D1-D2.

2. A cylindrical space stereoscopic display device as claimed in claim 1, characterized in that: The directional light source is composed of a light source array and a cylindrical lens grating, and only provides a one-dimensional directional arrangement of viewpoints.

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