CN216526560U - 3D interactive education presentation system based on liquid crystal polarization system - Google Patents
3D interactive education presentation system based on liquid crystal polarization system Download PDFInfo
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Abstract
The utility model discloses a liquid crystal polarization system-based 3D interactive education presentation system, which comprises a 3D display system, a display system and a display system, wherein the display system comprises a display screen and a display screen; the 3D display system is used for performing stereoscopic vision interaction with a user by capturing a visual observation point of the user and a space posture of the 3D control device and comprises a 3D display screen; the backlight module is used for providing a light source for the 3D display screen; the 3D display screen comprises a liquid crystal control layer; the liquid crystal control layer comprises liquid crystal molecules arranged between two pieces of flat glass and a transparent electric control layer arranged on the flat glass; the transparent electric control layer is used for controlling the optical rotation state by controlling the arrangement direction of liquid crystal molecules, so that the real-time control of the emergent left-handed circularly polarized light and right-handed circularly polarized light is realized. By implementing the utility model, the optical rotation state of the liquid crystal molecular layer is controlled by using the liquid crystal light valve, the 2D image is converted into the circularly polarized light respectively suitable for the left eye and the right eye, and the high-definition 3D image without resolution loss is formed, so that students can better, comprehensively and intuitively observe and understand the 3D content.
Description
Technical Field
The utility model relates to the technical field of stereoscopic projection, in particular to a 3D interactive education presentation system based on a liquid crystal polarization system.
Background
When the 2D video is displayed, video image frames which are not divided into left and right eye visual angles are continuously displayed, the time between the image frames is short, therefore, the human eyes see the videos with continuous scenes, the process of acquiring the stereo images or the videos is much more complex, two parallel cameras are needed during shooting, a special stereo camera comprises two imaging lenses which are equivalent to two eyes of a human, therefore, two groups of images with parallax are obtained, and the two groups of images are combined into one group of images through special equipment or software. The conventional image formats mainly include three formats, i.e., a left-eye image width compression 1/2 placed on the left side of the screen, a right-eye image width compression 1/2 placed on the right side of the screen, a left-right format, an up-down format, and a frame sequential format.
In the existing interactive system, the spatial position, distance and posture of the interactive 3D control device are determined through the infrared positioning unit, and then interaction is carried out with the three-dimensional interactive equipment. The 3D display device in the interactive system mainly uses the gap film layer, mainly sticks film layers with different polarization directions in an interlaced or spaced mode, and forms interlaced or spaced left and right eye polarization images. However, this technique has problems in that general resolution is lost, and aspect ratios of 2D and 3D images are not adjusted, resulting in the effects of image distortion or loss of resolution.
SUMMERY OF THE UTILITY MODEL
Aiming at the problem that the 3D display equipment in the existing interactive system mainly adopts a gap film layer, film layers with different polarization directions are attached mainly in an interlaced or spaced mode to form interlaced or spaced left and right eye polarization images, the resolution ratio of the images is reduced, and meanwhile, the aspect ratio of the 2D images and the 3D images is maladjusted, so that the images are easy to deform.
Aiming at the problems, a 3D interactive education presentation system based on a liquid crystal polarization system is provided, wherein the optical rotation state of a liquid crystal molecular layer is controlled by using a liquid crystal light valve, a 2D image is converted into circularly polarized light which is respectively suitable for left and right eyes, the spatial positions of 3D glasses and a 3D control device are captured by an optical capture system in a 3D display system, the spatial positions are transmitted to a control unit of the 3D display system, a six-degree-of-freedom sensor is arranged in the 3D control device to detect the spatial posture information of the control device, the control unit respectively sends images of the left and right eyes corresponding to the corresponding positions to the spatial posture information of the 3D glasses worn by a user to the human eyes, and the images are combined with an afterglow effect of the human eyes to form a high-definition 3D image without resolution loss. And then, the spatial pose information of the 3D control device is utilized to form a high-definition 3D image without resolution loss, so that students can better, comprehensively and visually observe and understand the 3D content.
A3D interactive education presentation system based on a liquid crystal polarization system is used for virtual teaching education, and comprises:
a 3D display system;
the 3D display system is configured to perform stereoscopic interaction with a user by capturing a visual viewpoint of the user and a spatial pose of the 3D manipulation device, and at least includes:
a 3D display screen;
the 3D display screen at least comprises:
a backlight module;
a polarization supporting layer;
a liquid crystal control layer;
the backlight module is used for providing a light source for the 3D display screen;
the polarization supporting layer is arranged on one side of the liquid crystal control layer close to the backlight module and used for converting incident image light into polarized light in a specific direction and emitting the polarized light;
the liquid crystal control layer sets up one side that backlight unit was kept away from to polarization supporting layer is used for with polarized light converts left handed circular polarized light and dextrorotation circular polarized light into, includes:
liquid crystal molecules arranged between two flat glasses
And
the transparent electric control layer is arranged on the flat glass;
the transparent electric control layer is used for controlling the optical rotation state by controlling the arrangement direction of the liquid crystal molecules, so that the real-time control of the emergent left-handed circularly polarized light and right-handed circularly polarized light is realized.
In combination with the 3D interactive education presentation system of the present invention, in a first possible implementation manner, the 3D interactive education presentation system further includes:
a 3D manipulation device;
3D glasses:
the 3D control device is in communication connection with the 3D display system and is used for performing virtual teaching interaction on the 3D display system and the 3D images displayed by the 3D display system;
the 3D glasses are in communication connection with the 3D display system and used for acquiring a 3D image from the 3D display system;
and a six-degree-of-freedom sensor is arranged in the 3D control device and is used for detecting the spatial attitude information of the 3D control device.
With reference to the first possible implementation manner and the second possible implementation manner of the present invention, in a second possible implementation manner, the 3D display system further includes:
an optical capture system;
the optical capturing system is used for capturing the spatial positions of the 3D glasses and the 3D control device, transmitting the spatial positions to the control unit of the 3D display system, and performing 3D interaction.
With reference to the second possible implementation manner of the present invention, in a third possible implementation manner, the 3D display screen at least includes:
a backlight module;
a polarization supporting layer;
a liquid crystal control layer;
a compensation layer;
the polarization supporting layer is arranged on one side of the liquid crystal control layer close to the backlight module, and the liquid crystal control layer is arranged on one side of the polarization supporting layer far away from the backlight module;
the compensation layer is arranged on one side of the liquid crystal control layer, which is far away from the backlight module, and is used for compensating the inconsistency of different angles of optical rotation of the liquid crystal control layer in a non-vertical angle.
With reference to the second possible implementation manner of the present invention, in a fourth possible implementation manner, the 3D display screen at least includes:
a backlight module;
a polarization supporting layer;
a liquid crystal control layer;
a compensation layer;
a protective support layer;
the polarization supporting layer is arranged on one side of the liquid crystal control layer close to the backlight module, and the liquid crystal control layer is arranged between the polarization supporting layer and the protection supporting layer;
the compensation layer is arranged on one side, far away from the backlight module, of the protection supporting layer and used for compensating the inconsistency of different angles of optical rotation of the liquid crystal control layer in a non-vertical angle.
With reference to the second possible implementation manner of the present invention, in a fifth possible implementation manner, the 3D display screen at least includes:
a backlight module;
a polarization supporting layer;
a liquid crystal control layer;
a compensation layer;
a protective support layer;
an anti-glare layer;
the polarization supporting layer is arranged on one side of the liquid crystal control layer close to the backlight module, and the liquid crystal control layer is arranged between the polarization supporting layer and the protection supporting layer;
the compensation layer is arranged on one side, far away from the backlight module, of the protection support layer, and the anti-glare layer is arranged on one side, far away from the backlight module, of the compensation layer.
With reference to the second to fifth possible implementation manners of the present invention, in a sixth possible implementation manner, the liquid crystal control layer at least includes:
a first liquid crystal control layer;
a second liquid crystal control layer;
the first liquid crystal control layer and the second liquid crystal control layer are attached to each other, and the difference of deflection angles of the first liquid crystal control layer and the second liquid crystal control layer is 90 degrees.
With reference to the sixth possible implementation manner of the present invention, in a seventh possible implementation manner, the protection support layer at least includes:
a first protective layer;
a second protective layer;
the first protective layer is arranged on one side, close to the backlight module, of the liquid crystal control layer and used for protecting the 3D display module.
With reference to the seventh possible implementation manner of the present invention, in an eighth possible implementation manner, the polarization support layer at least includes:
a polarizer layer;
a retardation glass layer;
the polarizer layer is arranged on one side, close to the backlight module, of the delay glass layer.
The liquid crystal polarization system-based 3D interactive education presentation system provided by the utility model is implemented by controlling the optical rotation state of a liquid crystal molecular layer by using a liquid crystal light valve, converting a 2D image into circularly polarized light respectively adapting to left and right eyes, capturing the spatial positions of 3D glasses and a 3D control device by an optical capture system in a 3D display system, and transmitting the spatial positions to a control unit of the 3D display system, wherein a six-degree-of-freedom sensor is arranged in the 3D control device to detect the spatial attitude information of the control device, and the control unit respectively sends images of the left and right eyes corresponding to the corresponding positions to the spatial attitude information of the 3D glasses worn by a user to the human eyes, and combines the images with the afterglow effect of the human eyes to form a high-definition 3D image without resolution loss. And then, the spatial pose information of the 3D control device is utilized to form a high-definition 3D image without resolution loss, so that students can better, comprehensively and visually observe and understand the 3D content.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a diagram of a 3D interactive educational presentation system;
FIG. 2 is a block diagram of a 3D display screen;
the part names indicated by the numbers in the drawings are as follows: 100-3D display system, 110-3D display screen, 111-backlight module, 112-polarization supporting layer, 113-liquid crystal control layer, 114-protection supporting layer, 115-compensation layer, 120-optical capture system, 200-3D control device, 300-3D glasses.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the utility model, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Aiming at the problem that the 3D display equipment in the existing interactive system mainly adopts a gap film layer, film layers with different polarization directions are attached mainly in an interlaced or spaced mode to form interlaced or spaced left and right eye polarization images, the resolution ratio of the images is reduced, and meanwhile, the aspect ratio of the 2D images and the 3D images is maladjusted, so that the images are easy to deform.
Aiming at the problems, a 3D interactive education presentation system based on a liquid crystal polarization system is provided.
A 3D interactive education presentation system based on a liquid crystal polarization system, as shown in fig. 1, fig. 1 is a diagram of the 3D interactive education presentation system, including a 3D display system 100; the 3D display system 100 is used for stereoscopic interaction with a user by capturing the user's visual viewpoint and the spatial pose of the 3D manipulation device. The 3D display system 100 at least includes a backlight module 111 and a 3D display screen 110; the backlight module 111 is used for providing a light source for the 3D display screen 110. The 3D display screen 110 at least includes a polarization supporting layer 112 and a liquid crystal control layer 113; the polarization supporting layer 112 is disposed on one side of the liquid crystal control layer 113 close to the backlight module 111, and is used for converting incident image light into polarized light in a specific direction and emitting the polarized light; the liquid crystal control layer 113 is disposed on a side of the polarization supporting layer 112 away from the backlight module 111, and is configured to convert polarized light into left-handed circularly polarized light and right-handed circularly polarized light. The liquid crystal control layer 113 comprises liquid crystal molecules arranged between two pieces of flat glass and a transparent electric control layer arranged on the flat glass; the transparent electric control layer is used for controlling the optical rotation state by controlling the arrangement direction of liquid crystal molecules, so that the real-time control of the emergent left-handed circularly polarized light and right-handed circularly polarized light is realized.
The three-dimensional display principle based on the liquid crystal polarization system is as follows: the backlight module 111 emits light, incident light shows a 2d image with colors and a specific polarization state through the polarization supporting layer 112, then the incident light passes through the liquid crystal control layer 113, the arrangement mode of liquid crystal molecules is controlled by electrodes arranged in the transparent electric control layer on the flat glass, the optical rotation state of the liquid crystal layer is changed, the liquid crystal layer is in a 1 state at the moment a, the optical rotation is 90 degrees, left-hand circular polarized light is formed to be emitted, the left-eye image signal is obtained, the liquid crystal layer is in a 2 state at the moment b, and right-hand polarized light is formed to be emitted at the angle of-90 degrees, and the right-eye image signal is obtained. The specific state 12 is determined by a single liquid crystal layer or a double liquid crystal layer. Meanwhile, the optical capturing system 120 captures the spatial position of the 3D glasses 300 and transmits the spatial position to the control unit of the 3D display system 100, and the control unit sends left and right eye image signals of corresponding angles according to the spatial pose information of the 3D glasses 300 worn by the user, and the signals are combined with the afterglow effect of human eyes to form a high-definition 3D image without resolution loss.
When interacting with the 3D manipulation apparatus 200, the optical capturing system 120 captures a spatial position of the 3D manipulation apparatus 200 and transmits the spatial position to the control unit of the 3D display system 100, and the control unit models the 3D manipulation apparatus 200 and interacts a 3D image in a 3D space according to the posture information.
The optical rotation state of the liquid crystal molecular layer is controlled by the liquid crystal light valve, the 2D image is converted into circularly polarized light which is suitable for left and right eyes respectively, the spatial positions of the 3D glasses 300 and the 3D control device 200 are captured by the optical capture system 120 in the 3D display system 100 and transmitted to the control unit of the 3D display system 100, the control unit sends the images of the left and right eyes corresponding to the corresponding positions to the human eyes respectively according to the spatial pose information of the 3D glasses 300 worn by a user, and the images are combined with the afterglow effect of the human eyes to form a high-definition 3D image without resolution loss.
Further, the 3D interactive education presentation system further includes a 3D control device 200 and 3D glasses 300: and a six-degree-of-freedom sensor is arranged in the 3D control device and used for detecting the spatial attitude information of the 3D control device. The 3D manipulation device 200 is in communication connection with the 3D display system 100, and is used for performing virtual teaching interaction on the 3D display system 100 and the 3D image displayed by the 3D display system; the 3D glasses 300 are communicatively connected to the 3D display system 100, and are configured to acquire a 3D image from the 3D display system 100.
Further, the 3D display system 100 further includes: an optical capture system 120; the optical capturing system 120 is used for capturing the spatial positions of the 3D glasses 300 and the 3D manipulation device 200, and transmitting the spatial positions to the control unit of the 3D display system 100 for 3D interaction.
In a preferred embodiment of the 3D display screen 110, the 3D display screen 110 includes:
a polarization supporting layer 112;
a liquid crystal control layer 113;
a compensation layer 115;
the polarization supporting layer 112 is arranged on one side of the liquid crystal control layer 113 close to the backlight module 111, and the liquid crystal control layer 113 is arranged on one side of the polarization supporting layer 112 far away from the backlight module 111; the compensation layer 115 is disposed on a side of the liquid crystal control layer 113 away from the backlight module 111, and is used for compensating the inconsistency of the optical rotation of the liquid crystal control layer 113 at different angles when the angle is not perpendicular. The use of the compensation layer 115 is advantageous in improving the viewing angle.
In another preferred embodiment of the 3D display screen 110, as shown in fig. 2, fig. 2 is a structural diagram of the 3D display screen 110; the 3D display screen 110 includes:
a polarization supporting layer 112;
a liquid crystal control layer 113;
a compensation layer 115;
a protective support layer 114;
the polarization supporting layer 112 is arranged on one side of the liquid crystal control layer 113 close to the backlight module 111, and the liquid crystal control layer 113 is arranged between the polarization supporting layer 112 and the protection supporting layer 114; the compensation layer 115 is disposed on a side of the protection supporting layer 114 away from the backlight module 111, and is used for compensating the non-uniformity of the optical rotation at different angles when the liquid crystal control layer 113 is not at a vertical angle.
In a preferred embodiment, the 3D display screen 110 includes at least:
a polarization supporting layer 112;
a liquid crystal control layer 113;
a compensation layer 115;
a protective support layer 114;
an anti-glare layer;
the polarization supporting layer 112 is arranged on one side of the liquid crystal control layer 113 close to the backlight module 111, and the liquid crystal control layer 113 is arranged between the polarization supporting layer 112 and the protection supporting layer 114;
the compensation layer 115 is disposed on a side of the protection supporting layer 114 away from the backlight module 111, and the anti-glare layer is disposed on a side of the compensation layer 115 away from the backlight module 111.
Through setting up anti dizzy layer, solved current 3D display screen 110 and leaded to dizzy problem, can not roll over to cause the injury to eyes because of light, dizzy can not appear when carrying out three-dimensional interaction, does not influence the viewing effect.
In a preferred embodiment, the liquid crystal control layer 113 includes at least:
a first liquid crystal control layer;
a second liquid crystal control layer;
the first liquid crystal control layer and the second liquid crystal control layer are arranged in an attaching mode, and the deflection angle difference between the first liquid crystal layer and the second liquid crystal layer is 90 degrees.
The control principle of the double liquid crystal control layers is as follows:
the first liquid crystal control layer is in non-deflection state at time a, the second liquid crystal control layer is in polarized state 90, and the first liquid crystal control layer is polarized at time b, the second liquid crystal control layer is not deflected. Thus, the first liquid crystal control layer and the second liquid crystal control layer respectively convert specific incident ray polarization into left-right circular polarization at the time a and the time b.
In some embodiments, the protection support layer 114 includes:
a first protective layer;
a second protective layer;
the first protective layer is disposed on a side of the liquid crystal control layer 113 close to the backlight module 111, and is used for protecting the 3D display module.
Further, the polarization support layer includes at least:
a polarizer layer;
a retardation glass layer;
the polarizer layer is disposed on one side of the retardation glass layer close to the backlight module 111.
The liquid crystal polarization system-based 3D interactive education presentation system provided by the utility model is implemented by controlling the optical rotation state of a liquid crystal molecular layer by using a liquid crystal light valve, converting a 2D image into circularly polarized light respectively adapting to left and right eyes, capturing the spatial positions of 3D glasses and a 3D control device by an optical capture system in a 3D display system, and transmitting the spatial positions to a control unit of the 3D display system, wherein a six-degree-of-freedom sensor is arranged in the 3D control device to detect the spatial attitude information of the control device, and the control unit respectively sends images of the left and right eyes corresponding to the corresponding positions to the spatial attitude information of the 3D glasses worn by a user to the human eyes, and combines the images with the afterglow effect of the human eyes to form a high-definition 3D image without resolution loss. And then, the spatial pose information of the 3D control device is utilized to form a high-definition 3D image without resolution loss, so that students can better, comprehensively and visually observe and understand the 3D content.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a 3D interactive education presentation system based on liquid crystal polarization system for carry out virtual teaching education, its characterized in that includes:
a 3D display system;
the 3D display system is configured to perform stereoscopic interaction with a user by capturing a visual viewpoint of the user and a spatial pose of the 3D manipulation device, and at least includes:
a 3D display screen;
the 3D display screen at least comprises:
a backlight module;
a polarization supporting layer;
a liquid crystal control layer;
the backlight module is used for providing a light source for the 3D display screen;
the polarization supporting layer is arranged on one side of the liquid crystal control layer close to the backlight module and used for converting incident image light into polarized light in a specific direction and emitting the polarized light;
the liquid crystal control layer sets up one side that backlight unit was kept away from to polarization supporting layer is used for with polarized light converts left handed circular polarized light and dextrorotation circular polarized light into, includes:
liquid crystal molecules arranged between two flat glasses
And
the transparent electric control layer is arranged on the flat glass;
the transparent electric control layer is used for controlling the optical rotation state by controlling the arrangement direction of the liquid crystal molecules, so that the real-time control of the emergent left-handed circularly polarized light and right-handed circularly polarized light is realized.
2. The 3D interactive educational presentation system of claim 1, wherein the 3D interactive educational presentation system further comprises:
a 3D manipulation device;
3D glasses:
the 3D control device is in communication connection with the 3D display system and is used for performing virtual teaching interaction on the 3D display system and the 3D images displayed by the 3D display system;
the 3D glasses are in communication connection with the 3D display system and used for acquiring a 3D image from the 3D display system;
and a six-degree-of-freedom sensor is arranged in the 3D control device and is used for detecting the spatial attitude information of the 3D control device.
3. The 3D interactive educational presentation system of claim 2, wherein the 3D display system further comprises:
an optical capture system;
the optical capturing system is used for capturing the spatial positions of the 3D glasses and the 3D control device, transmitting the spatial positions to the control unit of the 3D display system, and performing 3D interaction.
4. A 3D interactive educational presentation system in accordance with claim 3, wherein the 3D display screen comprises at least:
a backlight module;
a polarization supporting layer;
a liquid crystal control layer;
a compensation layer;
the polarization supporting layer is arranged on one side of the liquid crystal control layer close to the backlight module, and the liquid crystal control layer is arranged on one side of the polarization supporting layer far away from the backlight module;
the compensation layer is arranged on one side of the liquid crystal control layer, which is far away from the backlight module, and is used for compensating the inconsistency of different angles of optical rotation of the liquid crystal control layer in a non-vertical angle.
5. A 3D interactive educational presentation system in accordance with claim 3, wherein the 3D display screen comprises at least:
a backlight module;
a polarization supporting layer;
a liquid crystal control layer;
a compensation layer;
a protective support layer;
the polarization supporting layer is arranged on one side of the liquid crystal control layer close to the backlight module, and the liquid crystal control layer is arranged between the polarization supporting layer and the protection supporting layer;
the compensation layer is arranged on one side, far away from the backlight module, of the protection supporting layer and used for compensating the inconsistency of different angles of optical rotation of the liquid crystal control layer in a non-vertical angle.
6. A 3D interactive educational presentation system in accordance with claim 3, wherein the 3D display screen comprises at least:
a backlight module;
a polarization supporting layer;
a liquid crystal control layer;
a compensation layer;
a protective support layer;
an anti-glare layer;
the polarization supporting layer is arranged on one side, close to the backlight module, of the liquid crystal control layer, and the liquid crystal control layer is arranged between the polarization supporting layer and the protection supporting layer;
the compensation layer is arranged on one side, far away from the backlight module, of the protection support layer, and the anti-glare layer is arranged on one side, far away from the backlight module, of the compensation layer.
7. A3D interactive educational presentation system according to claim 5 or 6, wherein the liquid crystal control layer comprises at least:
a first liquid crystal control layer;
a second liquid crystal control layer;
the first liquid crystal control layer and the second liquid crystal control layer are attached to each other, and the difference of deflection angles of the first liquid crystal control layer and the second liquid crystal control layer is 90 degrees.
8. The 3D interactive educational presentation system of claim 7, wherein the protective support layer comprises at least:
a first protective layer;
a second protective layer;
the first protective layer is arranged on one side, close to the backlight module, of the liquid crystal control layer and used for protecting the 3D display module.
9. The 3D interactive educational presentation system of claim 8, wherein the polarization support layer comprises at least:
a polarizer layer;
a retardation glass layer;
the polarizer layer is arranged on one side, close to the backlight module, of the delay glass layer.
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