CN110727105A - Three-dimensional display device compatible with 2D image display - Google Patents
Three-dimensional display device compatible with 2D image display Download PDFInfo
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- CN110727105A CN110727105A CN201911044029.9A CN201911044029A CN110727105A CN 110727105 A CN110727105 A CN 110727105A CN 201911044029 A CN201911044029 A CN 201911044029A CN 110727105 A CN110727105 A CN 110727105A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
Abstract
The invention provides a stereoscopic display device compatible with 2D image display. The three-dimensional display device compatible with 2D image display is composed of a light source strip array, a liquid crystal display panel, a cylindrical lens grating, a first camera and a second camera. The light source strips in the light source strip array can be lightened to provide light energy for display, emitted light can be projected by the cylindrical lens grating and converged to one point in space, the liquid crystal display panel provides parallax images for display, the first camera and the second camera are used for identifying and judging the position of the right eye of a stereoscopic image viewer, and after the position of the right eye of the viewer is determined, the liquid crystal display panel is time-division multiplexed.
Description
Technical Field
The present invention relates to display technology, and more particularly, to stereoscopic display technology.
Background
The 3D display technology is a display technology that can realize real reproduction of a stereoscopic scene, and can provide different parallax images to human eyes, respectively, thereby enabling a person to generate stereoscopic vision. The conventional 3D display device projects parallax images corresponding thereto at different viewpoint positions in space by coupling pixels with the light splitting elements. The parallax images corresponding to each viewpoint position are different, and thus the conventional 3D display device can only provide a stereoscopic image to a viewer, and cannot provide a 2D image display to a user having a partial demand for a 2D image while providing a 3D stereoscopic image. Therefore, the invention provides a stereoscopic display device compatible with 2D image display.
Disclosure of Invention
The invention provides a stereoscopic display device compatible with 2D image display. Fig. 1 is a schematic structural diagram of the stereoscopic display device compatible with 2D image display. The three-dimensional display device compatible with 2D image display is composed of a light source strip array, a liquid crystal display panel, a cylindrical lens grating, a first camera and a second camera.
The light source strip array is composed of light source strips arranged in the horizontal direction. The light bars may be illuminated to provide light energy for display.
The cylindrical lenticulation is placed in front of the array of light source bars. Light rays emitted by each light source bar can be projected by the cylindrical lens grating. A plurality of light source strips in the light source strip array can be projected by the cylindrical lens grating and then converged to one point in space.
The liquid crystal display panel is used for providing parallax images for display.
The first camera and the second camera are used for identifying and judging the position of the right eye of the stereoscopic image viewer, and the position of the right eye of the stereoscopic image viewer is determined by shooting the right eye of the stereoscopic image viewer and utilizing the positions of the right eye of the stereoscopic image viewer in the two images shot by the first camera and the second camera.
After the position of the right eye of the stereoscopic image viewer is determined, the stereoscopic display device compatible with 2D image display performs stereoscopic image display compatible with 2D images in a time division multiplexing mode. Specifically, the display process is divided into two time slots. In the first time slice gap, in the light source strip array, each light source strip corresponding to the position of the right eye of a stereoscopic image viewer is turned on, the rest light source strips are turned off, the liquid crystal display panel provides a right parallax image, at the moment, a viewpoint can be formed at the position of the right eye of the stereoscopic image viewer and the right parallax image is displayed, and no image is displayed at the rest positions; in the second time slice slot, in the light source strip array, each light source strip corresponding to the right eye position of the stereoscopic image viewer is turned off, the rest light source strips are turned on, the liquid crystal display panel provides a left parallax image, at this time, no image is displayed at the right eye position of the stereoscopic image viewer, and the rest positions display the left parallax image.
In the first time slice slot, a viewer of the stereoscopic image can see a right parallax image by a right eye and cannot see any image by a left eye; in the second time slice gap, the right eye cannot see any image, and the left eye can see a left parallax image. Therefore, left and right eyes of a stereoscopic image viewer can respectively see corresponding parallax images, and stereoscopic vision is generated.
As long as the right eye position of other 2D image viewers is not overlapped with the stereoscopic image viewer, the left and right eyes cannot see the right parallax image within the first time slice; in the second time slice gap, only the left parallax image can be seen by the left eye and the right eye. Since the images seen by the left and right eyes are identical, only a 2D image without parallax can be seen.
Alternatively, the stereoscopic image viewer may be determined in a common manner outside the scope of the present invention, such as by facial recognition, location zone limitation, and the like.
Optionally, the determination of the position of the right eye of the viewer of the stereoscopic image may be determined by a common algorithm that is used for shooting by the first camera and the second camera, and calculating the displacement of the right eye target in the image collected by the first camera and the second camera, and the like, and is outside the protection scope of the invention.
Optionally, the first camera and the second camera may also identify and determine a left eye position of a viewer of the stereoscopic image, and enable the liquid crystal display panel to provide a left parallax image within a corresponding time slot.
Alternatively, the order of the first time slot and the second time slot may be reversed.
Alternatively, the cylindrical lenticular grating may be replaced with a slit grating.
In summary, according to the stereoscopic display device compatible with 2D image display of the present invention, one parallax image is provided at a position of one eye of a stereoscopic image viewer, and another parallax image is provided at all spatial positions except the position, so that only the stereoscopic image viewer can see the stereoscopic image, and viewers at other positions can only see the 2D image, thereby realizing stereoscopic display compatible with 2D image display.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a diagram illustrating a first time slot according to the present invention.
FIG. 3 is a diagram illustrating a second time slot according to the present invention.
Icon: 010-a stereoscopic display device compatible with 2D image display; 020-right parallax image display optical path; 030-left parallax image display light path; 100-array of light source bars; 110-light bar period unit; 200-a liquid crystal display panel; 300-cylindrical lenticulation; 410-a first camera; 420-second camera.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Examples
Fig. 1 is a schematic structural diagram of a stereoscopic display device 010 compatible with 2D image display according to this embodiment. In the figure, the x-coordinate represents the horizontal direction in space, the y-coordinate represents the vertical direction in space, and z represents the direction perpendicular to the x-y plane. The stereoscopic display device 010 compatible with 2D image display is composed of a light source bar array 100, a liquid crystal display panel 200, a lenticular lens 300, a first camera 410, and a second camera 420.
The light source bar array 100 is composed of light source bars arranged in a horizontal direction. The light source strips are formed of organic light emitting diodes, can be conveniently made in elongated configurations, and are illuminated to provide light energy for display.
The cylindrical lenticulation 300 is placed in front of the array of light bars 100. Light emitted from each light source bar may be projected by the lenticular lens 300. Referring to fig. 2, the spatial position of each light source bar is precisely coupled to the position of the lenticular lens 300, and in all light source bar period units 110, the light emitted by the light source bars at the same position can be projected by the lenticular lens 300 and then converged to a point in space.
The liquid crystal display panel 300 is used to provide a parallax image for display.
The first camera 410 and the second camera 420 are used for identifying and judging the right eye position of the viewer of the stereoscopic image, please refer to fig. 1.
One specific implementation method is as follows: first, whether the viewer is a stereoscopic image viewer is judged. The first camera 410 and the second camera 420 take pictures of the viewer at the same time. When the positions of the viewers are different, the positions of the viewers in the images captured by the first camera 410 and the second camera 420 should be different. Now, a pixel area is defined in the captured image, and when the image of the viewer is in the pixel area, the viewer is determined to be a stereoscopic image viewer. And secondly, judging the spatial position of the right eye of the identified stereoscopic image viewer. Referring to fig. 1, because the first camera 410 and the second camera 420 are displaced in the horizontal direction, the images captured by the first camera 410 and the second camera 420 should have parallax, that is, the positions of the pixels of the right eye of the viewer of the stereoscopic image in the two images captured by the first camera 410 and the second camera 420 are different. The average value of the positions of the right eye of the stereoscopic image viewer in the horizontal direction in the two pictures determines the direction in which the right eye of the stereoscopic image viewer is positioned; the difference between the horizontal coordinates of the pixels in the two pictures, namely the parallax size, of the right eye of the viewer determines the distance from the viewer to the screen. Specifically, the parallax of the stereoscopic image viewer is smaller as the right eye is farther from the screen; the parallax is larger as the stereoscopic image viewer is closer to the right eye of the screen. The first camera 410 and the second camera 420 can determine the viewer's right eye position.
Another specific implementation method for determining a stereoscopic image viewer is as follows: first, whether the viewer is a stereoscopic image viewer is judged. The first camera 410 and the second camera 420 take pictures of the viewer at the same time. And carrying out target recognition on the acquired viewer image, and judging the viewer as a stereoscopic image viewer if the image characteristics of the viewer are matched with the image characteristics of the viewer which is registered as a stereoscopic image viewer in advance.
The remaining viewers may be considered 2D image viewers.
It should be noted that the above-mentioned manner and process for determining the viewer of the stereoscopic image are common technical methods and are not included in the scope of the present invention. In addition, there may be other ways to implement the above functions.
After the position of the right eye of the stereoscopic image viewer is determined, the stereoscopic display device 010 compatible with the 2D image display performs stereoscopic image display compatible with the 2D image in a time division multiplexing manner. Specifically, the display process is divided into two time slots.
Referring to fig. 2, in the light bar array 100, there are 6 light bars in each light bar period unit 110, so that it can provide 6 different viewing positions in space. The second light source strip from the left in light source strip period unit 110 corresponds to the position of the right eye of the viewer of the current stereoscopic image in the figure. When the right eye of the viewer of the stereoscopic image is at the position and detected by the first camera 410 and the second camera 420, the second light source bar from the left in each light source bar period unit 110 is turned on, and the rest light source bars are turned off. At this time, the light emitted by all the illuminated light source bars may be converged by the lenticular lens 300 and projected to the right eye of the viewer of the current stereoscopic image. Meanwhile, the liquid crystal display panel 200 provides a right parallax image corresponding to the right eye of the stereoscopic image viewer, so that the present embodiment can form a viewpoint at the position of the right eye of the stereoscopic image viewer and display the right parallax image. In the rest space positions, no light source bar corresponding to the position is opened, so that no light energy support for display is provided, and no image is displayed.
Referring to fig. 3, in the light bar array 100, the second light bar from the left in each light bar period unit 110 is turned off, and the remaining 5 light bars are turned on, and the liquid crystal display panel 200 provides a left parallax image, at this time, the right eye position of the stereoscopic image viewer cannot provide light energy for display because the second light bar from the left in each light bar period unit 110 is turned off, so that no image is displayed, and the remaining 5 positions display the left parallax image.
To sum up, in the first time slice gap, the right eye can see the right parallax image, and the left eye cannot see any image; in the second time slice gap, the right eye cannot see any image, and the left eye can see a left parallax image. Therefore, left and right eyes of a stereoscopic image viewer can respectively see corresponding parallax images, and stereoscopic vision is generated. As long as the right eye position of other 2D image viewers is not overlapped with the stereoscopic image viewer, the left and right eyes cannot see the right parallax image within the first time slice; and in the second time slice gap, the left eye and the right eye can only see the left parallax image. Since the images seen by the left and right eyes are identical, only a 2D image without parallax can be seen. The present embodiment can realize stereoscopic display compatible with 2D image display.
Claims (4)
1. A stereoscopic display device compatible with 2D image display is characterized in that: the stereoscopic display device compatible with 2D image display is composed of a light source strip array, a liquid crystal display panel, a cylindrical lens grating, a first camera and a second camera, wherein the light source strip array is composed of light source strips arranged in the horizontal direction, the light source strips can be lightened to provide light energy for display, the cylindrical lens grating is placed in front of the light source strip array, light rays emitted by each light source strip can be projected by the cylindrical lens grating, a plurality of light source strips in the light source strip array can be converged to one point in space after being projected by the cylindrical lens grating, the liquid crystal display panel is used for providing parallax images for display, the first camera and the second camera are used for identifying and judging the position of the right eye of a stereoscopic image viewer, time division multiplexing is used, in a first time slice slot, the stereoscopic display device compatible with 2D image display can form a viewpoint at the position of the right eye of the stereoscopic image viewer, and the right parallax image is displayed, the images are not displayed at the rest positions, in the second time slot, the stereoscopic display device compatible with the 2D image display can display the left parallax image at the rest positions, and the images are not displayed at the position of the right eye of a stereoscopic image viewer, so that the left parallax image and the right parallax image are respectively provided for the left eye and the right eye of the stereoscopic image viewer, stereoscopic vision is formed, and the viewers at the other positions can only see the left parallax image, namely the 2D image.
2. A stereoscopic display apparatus compatible with 2D image display according to claim 1, wherein: the stereoscopic display device compatible with 2D image display can also identify the left eye of a stereoscopic image viewer, provide a left parallax image at the position in a first time slot, and display a right parallax image at the rest positions in a second time slot.
3. A stereoscopic display apparatus compatible with 2D image display according to claim 1, wherein: the light source strip array can be prepared by a light source array, a cylindrical lens grating and the like besides the organic light emitting diode.
4. A stereoscopic display apparatus compatible with 2D image display according to claim 1, wherein: the cylindrical lenticular grating may be replaced with a slit grating.
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| CN201911044029.9A CN110727105A (en) | 2019-10-30 | 2019-10-30 | Three-dimensional display device compatible with 2D image display |
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| CN201911044029.9A CN110727105A (en) | 2019-10-30 | 2019-10-30 | Three-dimensional display device compatible with 2D image display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113313744A (en) * | 2021-07-30 | 2021-08-27 | 成都工业学院 | Height and position display method for unmanned aerial vehicle |
| CN116338975A (en) * | 2023-05-30 | 2023-06-27 | 成都工业学院 | Stereoscopic display device based on display bar array |
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2019
- 2019-10-30 CN CN201911044029.9A patent/CN110727105A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113313744A (en) * | 2021-07-30 | 2021-08-27 | 成都工业学院 | Height and position display method for unmanned aerial vehicle |
| CN113313744B (en) * | 2021-07-30 | 2021-09-28 | 成都工业学院 | Height and position display method for unmanned aerial vehicle |
| CN116338975A (en) * | 2023-05-30 | 2023-06-27 | 成都工业学院 | Stereoscopic display device based on display bar array |
| CN116338975B (en) * | 2023-05-30 | 2023-07-28 | 成都工业学院 | Stereoscopic display device based on display bar array |
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