CN101382660B - 360° suspended stereoscopic three-dimensional display device - Google Patents

Abstract

The invention discloses a 360° suspended stereoscopic three-dimensional display device. Including the multi-view stereoscopic display screen and pyramid-shaped reflector placed in sequence, the multi-view stereoscopic display screen is a square and is divided into four independently displayed triangular areas according to the intersection of diagonals, and respectively correspond to the pyramid-shaped reflective mirrors. The four sides of the mirror, the multi-viewpoint stereoscopic display screen is a cylindrical grating screen, a double cylindrical grating screen or a double slit grating screen. The present invention combines multi-viewpoint stereoscopic three-dimensional display and reflection mirroring principles, and can splicing and displaying parallax images of at least sixteen viewpoints in a 360-degree range, wherein all mirrors are made of partially reflective and partially transmissive materials, so the image has Nice levitation effect. The invention has the advantages of simple structure, multi-view point mosaic to realize 360° surround viewing, and large-area three-dimensional display with strong three-dimensional effect.

Description

360° suspended stereoscopic three-dimensional display device

technical field

The invention relates to a three-dimensional display device, in particular to a 360° suspended stereoscopic three-dimensional display device.

Background technique

The difference between three-dimensional display and two-dimensional display is to bring visual depth perception to the viewer through various methods, so that it can naturally or unnaturally obtain the third-dimensional information in the picture. For the viewer, there is a difference between true three-dimensional and false three-dimensional (or quasi-three-dimensional). The development of 3D display technology has produced a large number of achievements today, which can be roughly divided into holographic 3D display, volumetric 3D display, and stereoscopic 3D display. Holographic technology can produce very realistic spatial effects, but it requires high-resolution spatial light modulators and ultra-high-speed data processing systems in terms of dynamic display. These two factors greatly limit the progress of this technology, making it It is not yet well into practical applications. Both volumetric 3D display and stereoscopic 3D display have relatively good display devices. However, most of the display devices based on these two methods rely on rotating screens to meet the requirements of viewing from all angles, so the structure of the display device is relatively complicated and the cost is relatively expensive. . VIZOO company discloses in US2008/0144175A1 a floating display device with a pyramid-like structure. The device is based on the principle of reflection and mirroring. Through four mirrors, the plane image above or below the mirror is imaged at the center of the pyramid-like structure, which can To achieve 360° full-angle viewing, the image projected by this simple device is still a flat image, which cannot provide the viewer with the depth information of the object.

Based on this, we integrated stereoscopic 3D display into VIZOO's solution, and proposed a simple and practical 360° suspended stereoscopic 3D display device.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a 360° suspended stereoscopic three-dimensional display device.

The 360° suspended stereoscopic three-dimensional display device includes a multi-view stereoscopic display screen and a pyramid-shaped reflector placed in sequence. The multi-view stereoscopic display screen is a square and is divided into four independently displayed triangles according to the intersection of diagonals. area, and respectively correspond to the four faces of the pyramid-shaped reflector, and the multi-viewpoint stereoscopic display screen is a cylindrical grating screen, a double cylindrical grating screen or a double slit grating screen.

The cylindrical grating screen is composed of projection display, LCD or PDP display surface and transmissive cylindrical grating. The double-cylindrical grating screen includes two identical cylindrical gratings, the first cylindrical grating and the second cylindrical grating, which are placed in parallel to the outside. The grating units of the first cylindrical grating correspond to the grating units of the second cylindrical grating. Multiple projectors on one side of the cylindrical lenticular screen project images of different viewpoints to the middle of the first cylindrical lenticular screen and the second cylindrical lenticular screen, and generate one-to-one corresponding multiple viewpoints on the other side of the double cylindrical lenticular screen . The double slit grating screen includes two identical first slit gratings and second slit gratings placed in parallel, the grating unit of the first slit grating corresponds to the grating unit of the second slit grating Multiple projectors on one side of the screen project images of different viewpoints to the middle of the first slit grating and the second slit grating, and generate one-to-one corresponding multiple viewpoints on the other side of the double-slit grating screen. The pyramid reflector is a hollow regular pyramid or a hollow regular square truncated prism. The angle between the sides and the bottom of the pyramid reflector is 45°, and all sides are made of partially reflective and partially transmissive materials.

The invention has the advantages of simple structure, multi-view point mosaic to realize 360° surround viewing, and large-area three-dimensional display with strong three-dimensional effect.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of a 360° suspended stereoscopic three-dimensional display device;

Fig. 2 is a top view of a 360° suspended stereoscopic three-dimensional display device;

Fig. 3 is a schematic diagram of a cylindrical grating screen;

Fig. 4 is a schematic diagram of a double-cylindrical grating screen;

Fig. 5 is a schematic diagram of a double-slit grating screen.

Detailed ways

As shown in Figure 1, the 360° suspended stereoscopic three-dimensional display device includes a multi-viewpoint stereoscopic display screen 1 and a pyramid-shaped mirror 2 placed in sequence. The multi-viewpoint stereoscopic display screen 1 is a square and intersects diagonally. Divided into four independently displayed triangular areas, and respectively corresponding to the four faces of the pyramid mirror 2, the multi-viewpoint stereoscopic display screen 1 is a cylindrical grating screen, a double cylindrical grating screen or a double slit grating screen. Described pyramid reflector 2 is a hollow regular quadrangular pyramid or hollow regular quadrangular prism, and the angle between the sides and the bottom surface of pyramid reflector 2 is 45 ° angle, and all sides are all made of partially reflective and partially transmissive materials .

As shown in Figure 2, the 360° suspended stereoscopic three-dimensional display device can realize 360-degree multi-view splicing, and each region of the multi-viewpoint stereoscopic display screen 1 displays multi-viewpoint parallax images, and each region displays multiple After the viewpoint parallax image is reflected by the corresponding side of the pyramid-shaped reflector 2, multiple viewpoints are evenly generated in the 90-degree range of the reflection area, and the four directions are spliced together to form a multi-viewpoint stereoscopic display that can be viewed around 360 degrees, and the total The number of viewpoints is equal to four times the number of viewpoints of the multi-viewpoint parallax images displayed in each area. For example, each parallax image is composed of four views of different viewing angles, then the device will be able to display sixteen viewpoints in different directions within a 360-degree range. image.

As shown in FIG. 3 , the lenticular grating screen is composed of a display surface 3 of a projection display, LCD or PDP and a transmissive lenticular grating 4 . Each pixel of the display surface 3 is divided into multiple sub-pixels, and different sub-pixels can be seen in different directions through the cylindrical grating 4. The optical parameters of the cylindrical grating 4 should be designed to match the viewpoint implied by the parallax image. The increase in the number of viewpoints is at the cost of sacrificing the horizontal resolution of the parallax image. At present, the grating direction is at a certain angle to the display screen, and half of the horizontal resolution loss is transferred to the vertical direction, which can get a good nine Viewpoint parallax image.

As shown in Figure 4, the described double-cylindrical grating screen comprises two identical cylindrical surfaces parallel to the outside of the first cylindrical grating 5 and the second cylindrical grating 6, the grating unit of the first cylindrical grating 5 and the second cylindrical grating The grating units of the two cylindrical gratings 6 are in one-to-one correspondence, and multiple projectors 7 on one side of the double cylindrical grating screen project images of different viewpoints to the middle of the first cylindrical grating 5 and the second cylindrical grating 6. The other side of the cylindrical lenticular screen generates a plurality of viewpoints 10 in one-to-one correspondence.

As shown in Figure 5, the double slit grating screen includes two identical first slit gratings 8 and second slit gratings 9 placed in parallel, the grating unit of the first slit grating 8 and the second slit The grating units of the grating 9 correspond one to one, and multiple projectors 7 on one side of the double-slit grating screen project images of different viewpoints to the middle of the first slit grating 8 and the second slit grating 9, and the double-slit grating The other side of the screen generates a plurality of viewpoints 10 in one-to-one correspondence.

Claims (5)

1. 360 ° of suspending type stereoscopic vision three-dimensional display apparatus, it is characterized in that comprising stereoscopic display screen of many viewpoints (1) and the pyramid catoptron (2) placed successively, the stereoscopic display screen of many viewpoints (1) is square and the delta-shaped region that is divided into four independent displaying by the mode that diagonal line intersects, and correspond respectively to four faces of pyramid catoptron (2), the stereoscopic display screen of many viewpoints (1) is cylindrical grating screen, bicylindrical grating screen or double aperture slit grating screen; All make with partial reflection part transmission-type material all sides of described pyramid catoptron (2).

2. a kind of 360 ° of suspending type stereoscopic vision three-dimensional display apparatus according to claim 1 is characterized in that described cylindrical grating screen is made of display surface (3) and the transmission-type cylindrical grating (4) of Projection Display, LCD or PDP.

3. a kind of 360 ° of suspending type stereoscopic vision three-dimensional display apparatus according to claim 1, it is characterized in that described bicylindrical grating screen comprises first cylindrical grating (5) and second cylindrical grating (6) of two identical outside parallel placements of cylinder, the raster unit of the raster unit of first cylindrical grating (5) and second cylindrical grating (6) is corresponding one by one, the bicylindrical grating shields a plurality of projectors (7) of a side the centre of the image projection of different points of view to first cylindrical grating (5) and second cylindrical grating (6), in opposite side generation a plurality of one to one viewpoints (10) of bicylindrical grating screen.

4. a kind of 360 ° of suspending type stereoscopic vision three-dimensional display apparatus according to claim 1, it is characterized in that described double aperture slit grating screen comprises first slit grating (8) and second slit grating (9) of two identical parallel placements, the raster unit of the raster unit of first slit grating (8) and second slit grating (9) is corresponding one by one, the double aperture slit grating shields a plurality of projectors (7) of a side the centre of the image projection of different points of view to first slit grating (8) and second slit grating (9), in opposite side generation a plurality of one to one viewpoints (10) of double aperture slit grating screen.

5. a kind of 360 ° of suspending type stereoscopic vision three-dimensional display apparatus according to claim 1, it is characterized in that described pyramid catoptron (2) is a hollow positive rectangular pyramid or hollow positive truncated rectangular pyramids shape, the side of pyramid catoptron (2) and the angle of bottom surface all are 45s.

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