Display device, display equipment and display method

Abstract

The present application provides a display device, a display equipment and a display method, wherein the display device includes a display component, the display component includes a first reflector group and a second reflector group arranged in a cross array, an orientation device is used to drive the first reflector and the second reflector to adjust and lock the angle; a control device is used to control the orientation device to adjust and lock the angle of the first reflector and the second reflector according to the spatial position of the left eye pupil and the right eye pupil obtained by the depth camera, the spatial position of the first reflector and the second reflector, and the spatial position of the laser emitter. In the above scheme, the viewpoint density will be determined by the angle adjustment step of the first reflector and the second reflector of the display component, and the viewing angle will be determined by the adjustable angle range of the first reflector and the second reflector, which reduces the constraint relationship between the viewpoint density and the viewing angle, and facilitates the improvement of the display effect of the three-dimensional display device.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device, a display equipment and a display method. Background Art

[0002] In traditional naked-eye 3D displays, a cylindrical lens array is used to fold images of different pixels on the display screen in different directions, so that viewers can enjoy an immersive 3D experience with both depth and color information without having to wear any additional auxiliary equipment, thus achieving the purpose of naked-eye 3D display.

[0003] However, for traditional naked-eye 3D display technology, due to the limitations of the properties of the cylindrical lens array itself, the viewpoint density and viewing angle of the 3D display device are mutually restricted. When designing a 3D display device, only a trade-off can be made between the two, resulting in difficulty in improving the display effect. Summary of the invention

[0004] The present application provides a display device, a display equipment and a display method, aiming to reduce the restrictive relationship between the viewpoint density and the viewing angle of a three-dimensional display device and improve the display effect of the three-dimensional display device.

[0005] In a first aspect, the present application provides a display device, comprising:

[0006] A display assembly, the display assembly comprising a plurality of first reflector groups and second reflector groups arranged in a cross array; each of the first reflector groups comprises at least one first reflector, and each of the second reflector groups comprises at least one second reflector; the display assembly further comprises an orientation device, the orientation device being used to drive the first reflector and the second reflector to adjust their angles in a three-dimensional space and to lock the first reflector and the second reflector at a set angle;

[0007] A laser transmitter, used to transmit laser to each of the first reflector and the second reflector in sequence, and display a stereoscopic image through reflection of the first reflector and the second reflector; a depth camera, used to obtain the spatial position of the left eye pupil and the right eye pupil of the human body;

[0008] The control device is used to control the orientation device to adjust and lock the angles of the first reflector and the second reflector according to the spatial positions of the left eye pupil and the right eye pupil, the spatial positions of the first reflector and the second reflector, and the spatial position of the laser emitter until: the first reflector is used to reflect the laser to be incident on the left eye pupil of the human body, and the second reflector is used to reflect the laser to be incident on the right eye pupil.

[0009] In the above technical scheme, the control device can control the first reflector and the second reflector in the display component to accurately reflect the laser of the laser transmitter to the left eye and the right eye of the human body respectively. In this scheme, the viewpoint density of the three-dimensional display device will be determined by the angle adjustment step of the first reflector and the second reflector of the display component, and the viewing angle will be determined by the adjustable angle range of the first reflector and the second reflector, so that the viewpoint density and the viewing angle no longer have a direct negative correlation, reducing the restrictive relationship between the viewpoint density and the viewing angle, and facilitating the improvement of the display effect of the three-dimensional display device.

[0010] In a possible implementation, the display assembly further includes a substrate and a support member;

[0011] There are a plurality of support members corresponding to the first reflector and the second reflector one by one; each support member is fixed to the substrate and used to support the corresponding first reflector or the second reflector, and the first reflector or the second reflector can be deflected relative to the corresponding support member;

[0012] The orientation devices correspond to the first reflector and the second reflector one by one, and each orientation device is used to drive the corresponding first reflector or the second reflector to adjust the angle and lock the corresponding first reflector or the second reflector.

[0013] In a possible implementation manner, the support member is a support rod, and the support rod is hinged at the center of the corresponding first reflector or the second reflector;

[0014] The orientation device is used to drive the first reflector and the second reflector to deflect relative to the corresponding support rod.

[0015] In a possible implementation, the orientation device includes a magnetic member and a plurality of electromagnetic members;

[0016] The magnetic member is fixed to a side of the first reflector or the second reflector facing the substrate and is arranged around the support rod;

[0017] A plurality of electromagnetic components are arranged around the support rod, each of the electromagnetic components is fixed on a side of the substrate facing the first reflector or the second reflector, and is used to generate magnetic force to attract or repel the magnetic component when energized.

[0018] In a possible implementation manner, the orientation device further includes a spring, one end of the spring acts on the first reflector or the second reflector, and the other end of the spring acts on the substrate;

[0019] The spring is used for driving the first reflector or the second reflector to reset when the first reflector or the second reflector is deflected relative to the substrate.

[0020] In a possible implementation manner, in the first direction, the first reflector group and the second reflector group are sequentially arranged in a row with an interval;

[0021] In a second direction perpendicular to the first direction, each of the first reflector groups includes a plurality of first reflectors arranged in a row, and each of the second reflector groups includes a plurality of second reflectors arranged in a row.

[0022] In a second aspect, the present application provides a display device, including a device body, and a display apparatus such as any one of the above-mentioned ones arranged on the device body.

[0023] In the above-mentioned display device, the control device of the display device arranged in the device body can control the first reflector and the second reflector in the display component to accurately reflect the laser of the laser transmitter to the left eye and the right eye of the human body respectively. In this scheme, the viewpoint density of the three-dimensional display device will be determined by the angle adjustment step of the first reflector and the second reflector of the display component, and the viewing angle will be determined by the adjustable angle range of the first reflector and the second reflector, so that the viewpoint density and the viewing angle no longer have a direct negative correlation, reducing the restrictive relationship between the viewpoint density and the viewing angle, and facilitating the improvement of the display effect of the three-dimensional display device.

[0024] In a third aspect, the present application provides a display method, which is applied to any of the above display devices, and the display method includes:

[0025] Acquiring spatial position information of a left pupil and a right pupil of a human body using the depth camera;

[0026] Adjusting the angles of the first reflector and the second reflector based on the spatial position information of the left eye pupil and the right eye pupil, the positions of the first reflector and the second reflector, and the position of the laser emitter, until the first reflector is used to reflect the laser to be incident on the left eye pupil of the human body, and the second reflector is used to reflect the laser to be incident on the right eye pupil;

[0027] Based on a single frame image, the laser emitter is controlled to scan and illuminate all the first reflectors and the second reflectors in sequence, and a stereoscopic image is displayed through reflections of the first reflectors and the second reflectors.

[0028] The above display method is applied to a display device, and the control device can control the first reflector and the second reflector in the display component to accurately reflect the laser of the laser transmitter to the left eye and the right eye of the human body respectively. In this scheme, the viewpoint density of the three-dimensional display device will be determined by the angle adjustment step of the first reflector and the second reflector of the display component, and the viewing angle will be determined by the adjustable angle range of the first reflector and the second reflector, so that the viewpoint density and the viewing angle no longer have a direct negative correlation, which reduces the restrictive relationship between the viewpoint density and the viewing angle, and facilitates improving the display effect of the three-dimensional display device.

[0029] In a possible implementation, adjusting the angles of the first reflector and the second reflector based on the spatial position information of the left eye pupil and the right eye pupil, the positions of the first reflector and the second reflector, and the position of the laser emitter includes:

[0030] Calculate the target normal direction of the reflection surfaces of the first reflector and the second reflector based on the spatial position information of the left eye pupil and the right eye pupil, the positions of the first reflector and the second reflector, and the position of the laser emitter;

[0031] The orientation device is controlled to adjust the angles of the first reflector and the second reflector, and the first reflector and the second reflector are locked when the normals of the reflection surfaces of the first reflector and the second reflector are in the direction of the target normal.

[0032] In a possible implementation, the orientation device includes a magnetic member and a plurality of electromagnetic members; the magnetic member is fixed to a side of the first reflector and the second reflector facing the substrate, and is arranged around the support rod; each of the electromagnetic members is fixed to a side of the substrate facing the first reflector and the second reflector, and is used to generate magnetic force to attract or repel the magnetic member when powered on;

[0033] The orientation device adjusts the angles of the first reflector and the second reflector, and locks the first reflector and the second reflector when the normals of the reflection surfaces of the first reflector and the second reflector are in the direction of the target normal, including:

[0034] Adjusting the current flowing through each electromagnetic element;

[0035] When the normal lines of the reflection surfaces of the first reflector and the second reflector are in the direction of the target normal line, the current flowing through each of the electromagnetic elements is kept constant. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used together with the specification to illustrate the technical solutions of the present disclosure. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0037] Figure 1 This is an overall schematic diagram of a display device in an embodiment of the present application;

[0038] Figure 2 This is a schematic diagram of a display device in an embodiment of the present application;

[0039] Figure 3 A schematic diagram of an arrangement of the first reflector group and the second reflector group;

[0040] Figure 4 This is a schematic diagram showing the method flow in the embodiments of the present application. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0042] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] To facilitate understanding of the display device provided in the embodiment of the present application, its application scenario is first described. The display device provided in the embodiment of the present application can be applied to a display device, and in particular, can be applied to a naked-eye 3D display device.

[0044] In traditional naked-eye 3D displays, a cylindrical lens array is used to fold images of different pixels on the display screen in different directions, so that viewers can enjoy an immersive 3D experience with both depth and color information without having to wear any additional auxiliary equipment, thus achieving the purpose of naked-eye 3D display.

[0045] However, for the traditional naked-eye three-dimensional display technology, due to the limitation of the nature of the cylindrical lens array itself, the viewpoint density and the viewing angle of the three-dimensional display device are mutually restricted. Among them, the viewpoint density refers to the number of different perspective images that can be observed within a certain viewing angle range, and the viewing angle refers to the angle range in which the audience can watch the three-dimensional image from different directions without losing the stereoscopic effect. In the traditional naked-eye three-dimensional display technology, due to the limitations of the screen's own resolution and the cylindrical lens array, the total number of viewpoints is generally a set value. When the total number of viewpoints is a set value, the greater the viewpoint density, the lower the viewing angle, and conversely, the smaller the viewpoint density, the higher the viewing angle. Too low a viewpoint density may cause the audience to be unable to obtain a corresponding new perspective when moving their heads, thereby reducing the sense of immersion and stereoscopic depth perception. Too small a viewing angle requires the viewer to stand in a very specific position to experience the stereoscopic effect, which limits the degree of freedom of viewing. Therefore, when designing a three-dimensional display device in the traditional cylindrical lens array technology, only a trade-off between the two can be made, resulting in difficulty in improving the display effect.

[0046] Based on this, the present application provides a display device, a display apparatus and a display method, aiming to reduce the constraint relationship between the viewpoint density and the viewing angle of a three-dimensional display device and improve the display effect of the three-dimensional display device. The display device provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0047] For reference Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall display device in the embodiment of the present application. Figure 2 Schematic diagram of the display device in the embodiment of the present application. The display device provided in the embodiment of the present application includes a display component, a laser emitter 2, a depth camera 3 and a control device (not shown in the figure), wherein the depth camera 3 is used to obtain the position information of the left eye pupil 42 and the right eye pupil 41 of the human body, and the control device is used to control the display component to adjust the state of the display component based on the spatial position information of the left eye pupil 42 and the right eye pupil 41 combined with the position information of the laser emitter 2 and the position information of the display component, and to make the laser emitter 2 irradiate the display component, and finally the display component reflects the laser to the left eye pupil 42 and the right eye pupil 41 of the human body respectively, so as to realize three-dimensional stereoscopic imaging.

[0048] The display assembly includes a plurality of reflectors arranged in an array, wherein some of the reflectors are used to reflect the laser light emitted by the laser emitter 2 to the left eye pupil 42, and some of the reflectors are used to reflect the laser light emitted by the laser emitter 2 to the right eye pupil 41. For the convenience of description, the reflector used to reflect the laser light emitted by the laser emitter 2 to the left eye pupil 42 is referred to as the first reflector 111, and the reflector used to reflect the laser light emitted by the laser emitter 2 to the right eye pupil 41 is referred to as the second reflector 121.

[0049] The display assembly includes an orientation device 13 and a plurality of first reflector groups 11 and second reflector groups 12 arranged in a cross array. Each first reflector group 11 includes at least one first reflector 111, and each second reflector group 12 includes at least one second reflector 121. The first reflector 111 and the second reflector 121 are respectively used to reflect light to the pupils on both sides of the human body, so that the pupils on both sides of the human body can receive different images, thereby achieving the purpose of three-dimensional display.

[0050] Specifically, the first reflector group 11 and the second reflector group 12 are arranged in an array as a whole, that is, the first reflector group 11 and the second reflector group 12 can be arranged in a row, or in a column, or can be arranged in a matrix form in both the horizontal and vertical directions. In the specific arrangement, the first reflector group 11 and the second reflector group 12 are arranged crosswise, for example, in some possible implementations, the first reflector group 11 and the second reflector group 12 can be arranged at intervals in the horizontal direction, and the first reflector group 11 and the second reflector group 12 can also be arranged at intervals in the vertical direction. Of course, the first reflector group 11 and the second reflector group 12 can also be arranged at intervals in both the horizontal direction and the vertical direction to form a dot-shaped cross array.

[0051] The display assembly further includes an orientation device 13, which acts on each of the first reflectors 111 and the second reflectors 121, specifically, driving the first reflectors 111 and the second reflectors 121 to adjust their angles in three-dimensional space and locking the first reflectors 111 and the second reflectors 121 at set angles, so that the first reflectors 111 and the second reflectors 121 can respectively illuminate the left pupil 42 and the right pupil 41 of the human eye. It should be understood that there can be one or more orientation devices 13; and the same orientation device 13 can act on all the first reflectors 111 and the second reflectors 121 of all the first reflector groups 11 and all the second reflector groups 12 at the same time, or each orientation device 13 can act on all the first reflectors 111 in one first reflector group 11 or on all the second reflectors 121 in one second reflector group 12, or each orientation device 13 can act on one first reflector 111 or one second reflector 121 in one first reflector group 11 or one second reflector 121 in one second reflector group 12. And, specifically, the orientation device 13 can apply driving force and locking force to the first reflector 111 and the second reflector 121 by electromagnetic force, friction force, gear matching, etc.

[0052] The control device is used to control the orientation device 13 to adjust and lock the angles of the first reflector 111 and the second reflector 121 according to the spatial positions of the left eye pupil 42 and the right eye pupil 41, the spatial positions of the first reflector 111 and the second reflector 121, and the spatial position of the laser emitter 2 until: the first reflector 111 is used to reflect the laser to be incident on the left eye pupil 42 of the human body, and the second reflector 121 is used to reflect the laser to be incident on the right eye pupil 41.

[0053] As an example, the depth camera 3 can be used to obtain the spatial positions of the left pupil 42 and the right pupil 41 of the human body. Then, according to the positional relationship between the left pupil 42, each first reflector 111 and the laser emitter 2, the set angle that each first reflector 111 should be at is calculated. The angle should satisfy that when the laser emitter 2 emits a laser beam to illuminate each first reflector 111, each first reflector 111 can reflect the laser to the left pupil 42 of the human body. Then, the control device can control the orientation device 13 to drive each first reflector 111 to deflect to the set angle it should be at. The same processing as above can be performed for each second reflector 121, and only the second reflector 121 is matched to the right pupil 41 of the human body.

[0054] It is worth noting that the spatial position information of the laser emitter 2 and the spatial position information of the first reflector 111 and the second reflector 121 in the embodiment of the present application are the own parameters of the display device in the embodiment of the present application. When the various parts of the display device are assembled, their spatial position information is also confirmed; and when calculating the angles of the first reflector 111 and the second reflector 121, the spatial position information of the laser emitter 2 and the spatial position information of the first reflector 111 and the second reflector 121 can be stored in the controller.

[0055] After the above processing, the laser emitter 2 emits laser light to each first reflector 111 and the second reflector 121 in turn, and displays a three-dimensional image through the reflection of the first reflector 111 and the second reflector 121. Specifically, for the above-mentioned display component, the display component as a whole can be equivalent to a screen, and each first reflector 111 and each second reflector 121 are equivalent to a pixel point on the screen. The laser emitter 2 emits laser light of the brightness and color of the corresponding pixel point to the first reflector 111 and the second reflector 121, and the laser light reflected to the left eye pupil 42 and the right eye pupil 41 through the first reflector 111 and the second reflector 121 can form an image. In addition, according to the principle of three-dimensional display, all the first reflectors 111 as pixel points can reflect the light required for the image imaging for the left eye to watch, and all the second reflectors 121 as pixel points can reflect the light required for the image imaging for the right eye to watch, so that the left eye and the right eye of the human body can see different images respectively, thereby achieving a three-dimensional display effect.

[0056] It should be understood that the specific process of the laser emitter 2 emitting laser scanning can be achieved by a galvanometer. The laser emitter 2 is used to irradiate each first reflector 111 and each second reflector 121 once in turn to form a frame of picture. In order to make each frame of picture coherent to form a video, the time for the laser emitter 2 to scan a single frame of image should be less than the visual persistence time of the human eye.

[0057] The above-mentioned display device can be controlled by the control device to control the first reflector 111 and the second reflector 121 in the display component to accurately reflect the laser of the laser emitter 2 to the left eye and the right eye of the human body respectively. In this scheme, the viewpoint density of the three-dimensional display device will be determined by the angle adjustment step of the first reflector 111 and the second reflector 121 of the display component. Specifically, each angle of the first reflector 111 and the second reflector 121 corresponds to a viewpoint of the three-dimensional display device. In this way, the smaller the angle adjustment step of the first reflector 111 and the second reflector 121, the more viewpoints of the three-dimensional display device within a unit distance, and the greater the viewpoint density of the three-dimensional display device. The viewing angle will be determined by the adjustable angle range of the first reflector 111 and the second reflector 121. The larger the adjustable angle of the first reflector 111 and the second reflector 121, the larger the viewing angle of the three-dimensional display device. In this way, the viewpoint density and the viewing angle no longer have a direct negative correlation, which reduces the restrictive relationship between the viewpoint density and the viewing angle, and is convenient for improving the display effect of the three-dimensional display device.

[0058] For reference Figure 3 , Figure 3 Schematic diagram of an arrangement of the first reflector group and the second reflector group. As an optional implementation, when the first reflector group 11 and the second reflector group 12 are specifically arranged, in the first direction, the first reflector group 11 and the second reflector group 12 are arranged in rows in sequence; in the second direction perpendicular to the first direction, each first reflector group 11 includes a plurality of first reflectors 111 arranged in a row, and each second reflector group 12 includes a plurality of second reflectors 121 arranged in a row. Figure 3 As shown, all first reflectors 111 and all second reflectors 121 are arranged horizontally and vertically to form a reflector matrix, wherein each column of the reflector matrix is ​​the same first reflector 111 or the same second reflector 121, and each row of the reflector matrix is ​​the first reflector 111 and the second reflector 121 arranged in sequence in a cross-spaced manner. Such an arrangement can, on the one hand, ensure that the reflectors irradiating the left eye pupil 42 and the right eye pupil 41 are arranged in a relatively uniform cross-arrangement, which is conducive to improving the overall display effect of the display assembly; on the other hand, when the display assembly is specifically placed, the second direction can be set to be roughly along the horizontal direction, that is, roughly the same as the arrangement of the left eye pupil 42 and the right eye pupil 41, so that a more natural viewing experience can be provided during the display process.

[0059] As an optional implementation, refer to Figure 2In the embodiment of the present application, the display assembly further includes a substrate 14 and a support member 15, and the first reflector 111 and the second reflector 121 are connected to the substrate 14 through the support member 15. Specifically, the number of the support members 15 is multiple and corresponds to the first reflector 111 and the second reflector 121 one by one. Each support member 15 is fixed to the substrate 14 and is used to support the corresponding first reflector 111 or the second reflector 121, and the first reflector 111 or the second reflector 121 can be deflected relative to the corresponding support member 15. The support member 15 can support the corresponding first reflector 111 or the second reflector 121 to maintain a certain interval with the substrate 14, so that the first reflector 111 and the second reflector 121 have a certain space for flipping angle.

[0060] There may be multiple orientation devices 13 , and the orientation devices 13 correspond one to one with the first reflector 111 and the second reflector 121 . Each orientation device 13 is used to drive the corresponding first reflector 111 or second reflector 121 to adjust the angle and lock the corresponding first reflector 111 or second reflector 121 .

[0061] That is, a first reflector 111 or a second reflector 121, a support 15 and an orientation device 13 constitute a reflector unit, which can always reflect light to the left eye pupil 42 or the right eye pupil 41 of the human body by changing the angle orientation of the first reflector 111 or the second reflector 121 under the control of the control device and the corresponding circuit.

[0062] With such an arrangement, the arrangement of each first reflector 111 or the second reflector 121 is relatively independent, and the orientation devices 13 that can control their steering are also independent of each other. This makes it convenient to adjust the orientation of the reflector according to the different positions of each reflector. On the other hand, if one or more of the first reflector 111 or the second reflector 121, the support member 15 and the orientation device 13 in a certain reflective unit are damaged, it will only appear as a bad pixel on the display screen, thereby reducing the impact of damage to a single reflective unit on the overall display component.

[0063] As an optional implementation, the support member 15 in the embodiment of the present application is a support rod, which is hinged at the center of the corresponding first reflector 111 or the second reflector 121, and the orientation device 13 is used to drive the first reflector 111 and the second reflector 121 to deflect relative to the corresponding support rod. Specifically, one end of the support rod is fixedly connected to the substrate 14, and the other end of the support rod is hinged to the first reflector 111 or the second reflector 121. Among them, the specific hinge method may include but is not limited to hinge through a ball head, hinge through a universal joint, etc. The orientation device 13 can specifically act on the peripheral part of the hinge part of the first reflector 111 or the second reflector 121, and adjust the angle of the first reflector 111 or the second reflector 121 by applying force. By setting the support rod, a stable support can be provided for the first reflector 111 and the second reflector 121, thereby improving the structural stability of the display assembly.

[0064] As an example, the support rod is hinged to the first reflector 111 or the second reflector 121 via a ball head. Such a hinged connection can simplify the hinged structure and reduce the failure rate of the hinged structure.

[0065] As an optional implementation, the orientation device 13 includes a magnetic member 131 and a plurality of electromagnetic members 132. The magnetic member 131 is fixed on the side of the first reflector 111 or the second reflector 121 facing the substrate 14 and is arranged around the support rod; the plurality of electromagnetic members 132 are arranged around the support rod, each electromagnetic member 132 is fixed on the side of the substrate 14 facing the first reflector 111 or the second reflector 121 and is used to generate magnetic force to attract or repel the magnetic member 131 when powered on. By applying force to the first reflector 111 and the second reflector 121 by adopting the mutual attraction and repulsion between the electromagnetic member 132 and the magnetic member 131, the adjustment response is fast and the adjustment accuracy is high.

[0066] Optionally, the number of the electromagnetic members 132 may be at least three, and at least three electromagnetic members 132 are arranged at intervals around the support rod. When the number of the electromagnetic members 132 is at least three, the three electromagnetic members 132 attract or repel the magnetic member 131, and in combination with the support of the support member 15, the corresponding first reflector 111 and second reflector 121 can be adjusted in three-dimensional space.

[0067] Another alternative is to Figure 2As shown, the number of the electromagnetic members 132 and the number of the magnetic members 131 are both four and one-to-one corresponding, and the four magnetic members 131 are respectively arranged at the four corners of the first reflector 111 or the second reflector 121. This arrangement, on the one hand, makes the magnetic member 131 farther away from the hinge between the first reflector 111 or the second reflector 121 and the support rod, which can increase the torque applied by the electromagnetic member 132 to the magnetic member 131 and speed up the response speed of the angle adjustment of the first reflector 111 or the second reflector 121; on the other hand, the magnetic members 131 are evenly distributed on the edge of the first reflector 111 or the second reflector 121, which improves the smoothness of adjusting the angle of the first reflector 111 or the second reflector 121.

[0068] Optionally, when the magnetic member 131 and the electromagnetic member 132 are specifically provided, the magnetic member 131 may be a magnet, and the electromagnetic member 132 may be an electromagnetic coil. Using an electromagnetic coil as the electromagnetic member 132 has the characteristics of being easy to change polarity and easy to control the magnitude of applied force.

[0069] Optionally, in the embodiment of the present application, in any direction, the first reflector 111 or the second reflector 121 can be deflected relative to the substrate 14 at an angle between 0 and 30°. In this way, the first reflector 111 or the second reflector 121 itself can be deflected at a maximum of 30° relative to the substrate 14. Because for laser light, adjusting the angle of the first reflector 111 or the second reflector 121 will simultaneously change the incident angle and the reflection angle of the laser, the laser light incident on the left eye pupil 42 or the right eye pupil 41 in any direction can be deflected at an angle of 60°, so in any pair of parallel and opposite directions, the viewing angle of the display component can reach 120°, and such a large viewing angle can improve the display effect of the display component. On the other hand, for the display component provided in the embodiment of the present application, the angle of the first reflector 111 or the second reflector 121 can be set to be infinitely adjustable, so that the viewpoint density of the three-dimensional display device can approach infinity, which is equivalent to the viewpoint density approaching infinity, further improving the display effect of the display component.

[0070] As an optional implementation, the orientation device 13 further includes a spring 133, one end of the spring 133 acts on the first reflector 111 or the second reflector 121, and the other end of the spring 133 acts on the substrate 14. Specifically, each spring 133 corresponds to the first reflector 111 or the second reflector 121, that is, one end of the spring 133 is connected to the corresponding first reflector 111 or the second reflector 121, and the other end of the spring 133 is connected to the substrate 14.

[0071] The spring 133 is used to drive the first reflector 111 or the second reflector 121 to reset when the first reflector 111 or the second reflector 121 deflects relative to the substrate 14. That is, the spring 133 is configured so that when the first reflector 111 or the second reflector 121 deviates from the state parallel to the substrate 14, the spring 133 applies force to the first reflector 111 or the second reflector 121 so that it has a tendency to return to the state parallel to the substrate 14. Specifically, the number of the springs 133 can be one or more. When the first reflector 111 or the second reflector 121 is in a state parallel to the substrate 14, the spring 133 is in an initial state; when the first reflector 111 or the second reflector 121 is in a state deviated by a certain angle relative to the substrate 14, at least one spring 133 is in a compressed or extended state, thereby applying force to the first reflector 111 or the second reflector 121 so that it has a tendency to return to the state parallel to the substrate 14.

[0072] When there is only one spring 133, the support rod can be inserted into the spring 133 circle; at this time, the inner circle diameter of the spring 133 is larger than the diameter of the support rod, and the entire circle of the end of the spring 133 abuts between the substrate 14 and the first reflector 111 or the second reflector 121, so that the spring 133 has a return function.

[0073] When the number of springs 133 is two or more, all springs 133 may be arranged to surround the support rod at intervals. Figure 2 The number of springs 133 shown is four, and one end of each spring 133 is connected to the magnetic member 131 , and the other opposite end of each spring 133 is connected to the electromagnetic member 132 .

[0074] By providing the spring 133, on the one hand, a certain resistance can be provided for the deflection process of the first reflector 111 or the second reflector 121 when adjusting the angle of the first reflector 111 or the second reflector 121, so that the angle adjustment of the first reflector 111 or the second reflector 121 is smoother; on the other hand, by providing the spring 133, when the electromagnetic member 132 is energized to attract or repel the magnetic member 131 so that the first reflector 111 or the second reflector 121 is locked at a set angle, the electromagnetic force generated by the electromagnetic member 132 and the elastic force generated by the spring 133 are approximately a pair of balancing forces, which helps to keep the first reflector 111 or the second reflector 121 locked at the set angle; and when the display component is in a power-off state, the spring 133 can maintain the first reflector 111 or the second reflector 121 parallel to the substrate 14, thereby reducing the risk of the first reflector 111 and the second reflector 121 being scratched against the substrate 14, and reducing the risk of the hinged structure of the first reflector 111 or the second reflector 121 and the support rod being squeezed.

[0075] An embodiment of the present application further provides a display device, which includes a device body, and a display device such as any one of the above-mentioned ones arranged on the device body.

[0076] In the above-mentioned display device, the control device of the display device arranged in the device body can control the first reflector 111 and the second reflector 121 in the display component to accurately reflect the laser of the laser emitter 2 to the left eye and the right eye of the human body respectively. In this scheme, the viewpoint density of the three-dimensional display device will be determined by the angle adjustment step of the first reflector 111 and the second reflector 121 of the display component, and the viewing angle will be determined by the adjustable angle range of the first reflector 111 and the second reflector 121, so that the viewpoint density and the viewing angle no longer have a direct negative correlation, reducing the restrictive relationship between the viewpoint density and the viewing angle, which is convenient for improving the display effect of the three-dimensional display device.

[0077] refer to Figure 4 , Figure 4 This is a schematic diagram showing the method flow in the embodiments of the present application.

[0078] The embodiment of the present application also provides a display method, which is applied to any of the above-mentioned display devices. The method includes the following steps.

[0079] S100: Acquire spatial position information of a left pupil and a right pupil of a human body using a depth camera.

[0080] In this step, the depth camera 3 can obtain the position information of the left eye pupil 42 of the human body relative to the depth camera 3, and can obtain the position information of the right eye pupil 41 of the human body relative to the depth camera 3. Since the position of the depth camera 3 and the display component is relatively fixed, the relative position relationship between the left eye pupil 42 or the right eye pupil 41 and the display component can be inferred according to the position information of the left eye pupil 42 or the right eye pupil 41 of the human body relative to the depth camera 3, specifically, it can be the position relationship of the left eye pupil 42 or the right eye pupil 41 relative to each first reflector 111 or the second reflector 121, so that the position of the first reflector 111 or the second reflector 121 can be easily adjusted, so that the first reflector 111 or the second reflector 121 can accurately reflect light to the left eye pupil 42 or the right eye pupil 41.

[0081] S200, adjusting the angles of the first reflector and the second reflector based on the spatial position information of the left eye pupil and the right eye pupil, the positions of the first reflector and the second reflector, and the position of the laser emitter.

[0082] By mapping the spatial position information of the left pupil 42 and the right pupil 41 of the human body obtained by the depth camera 3, the position information of each first reflector 111 and the second reflector 121, and the position information of the laser emitter 2 to the same coordinate system, the angle of each first reflector 111 and the second reflector 121 can be calculated in combination with the principle that the incident angle of the laser is equal to the reflection angle. Then, the control device can control the orientation device 13 to drive each first reflector 111 and the second reflector 121 to turn to the angle where they should be and lock each first reflector 111 and the second reflector 121.

[0083] As an optional implementation manner, adjusting the angles of the first reflector 111 and the second reflector 121 based on the spatial position information of the left eye pupil 42 and the right eye pupil 41, the positions of the first reflector 111 and the second reflector 121, and the position of the laser emitter specifically includes:

[0084] S210. Calculate the target normal direction of the reflection surfaces of the first reflector 111 and the second reflector 121 based on the spatial position information of the left eye pupil 42 and the right eye pupil 41, the positions of the first reflector 111 and the second reflector 121, and the position of the laser emitter.

[0085] In the above steps, the reflection surfaces of the first reflector 111 and the second reflector 121 are surfaces of the first reflector 111 and the second reflector 121 for reflecting the light emitted by the laser emitter 2 to the left pupil 42 or the right pupil 41 of the human body. The normal of the reflection surface is perpendicular to the reflection surface. After confirming the direction of the normal of the reflection surface, the angle of the first reflector 111 or the second reflection surface can be determined.

[0086] The target normal direction can be calculated based on the spatial position information of the left pupil 42 and the right pupil 41 of the human body obtained by the depth camera 3 mapped to the same coordinate system, the position information of each first reflector 111 and the second reflector 121, and the position information of the laser emitter 2.

[0087] As an example, according to the depth camera 3 and after the position information is mapped, in the same spatial coordinate system, the position coordinate of the left pupil 42 of the human body is (E x , E y , E z ), the center position coordinate of the reflection surface of the first reflection mirror 111 in the display assembly for reflecting the light emitted by the laser emitter 2 to the left eye pupil 42 is (M x , M y ,M z ), the position coordinates of the laser emitting end of laser emitter 2 are (S x, S y , S z ), according to the principle of mirror reflection, the target normal direction of the first reflector 111 can be calculated {(S x +E x ) / 2-M x , (S y +E y ) / 2-M y , (S z +E z ) / 2-M z Subsequently, the position of the first reflector 111 can be adjusted according to the target normal direction.

[0088] It should be understood that a display component may include multiple first reflectors 111 for reflecting the light emitted by the laser emitter 2 to the left eye pupil 42, and the target normal direction of each first reflector 111 can be calculated based on the center coordinates of the reflecting surface of each first reflector 111; and, for the second reflector 121 for reflecting the light emitted by the laser emitter 2 to the right eye pupil 41, the spatial position coordinates of the right eye pupil 41 can be used for calculation.

[0089] S220, controlling the orientation device 13 to adjust the angles of the first reflector 111 and the second reflector 121, and locking the first reflector 111 and the second reflector 121 when the normals of the reflection surfaces of the first reflector 111 and the second reflector 121 are in the direction of the target normal.

[0090] In this step, the angle of the first reflector 111 or the second reflector 121 is adjusted, and the specific adjustment action can be completed by the orientation device 13; and as for how to know that the normal of the reflecting surface of the first reflector 111 or the second reflector 121 is already in the target normal direction, it can be achieved by an angle sensing device such as a gyroscope set on the first reflector 111 or the second reflector 121. Of course, it is also possible to set a plurality of distance sensors on the side of the first reflector 111 or the second reflector 121 facing the substrate 14, and judge the angle of the first reflector 111 and the second reflector 121 by judging the distance between different points on the first reflector 111 and the second reflector 121 and the substrate 14.

[0091] In the above optional implementation manner, by calculating the normal direction of each first reflector 111 and the second reflector 121, and then adjusting the angle of each first reflector 111 and the second reflector 121 according to the calculated target normal direction, the angle of the first reflector 111 and the second reflector 121 can be accurately adjusted, thereby improving the accuracy of the display component reflecting light to the left eye pupil 42 and the right eye pupil 41 of the human body.

[0092] As an optional implementation, the orientation device 13 includes a magnetic member 131 and a plurality of electromagnetic members 132; the magnetic member 131 is fixed to the side of the first reflector 111 and the second reflector 121 facing the substrate 14, and is arranged around the support rod; each of the electromagnetic members 132 is fixed to the side of the substrate 14 facing the first reflector 111 and the second reflector 121, and is used to generate magnetic force to attract or repel the magnetic member 131 when powered on;

[0093] The orientation device 13 adjusts the angles of the first reflector 111 and the second reflector 121, and locks the first reflector 111 and the second reflector 121 when the normals of the reflection surfaces of the first reflector 111 and the second reflector 121 are in the direction of the target normal, specifically including:

[0094] S221 , adjusting the current flowing through each electromagnetic component 132 .

[0095] In this step, the power supply module can be used to adjust the current of each electromagnetic component 132, which may specifically include the direction and magnitude of the current of each electromagnetic component 132. The direction of the current may determine whether the electromagnetic component 132 can exert an attractive force or a repulsive force on the magnetic component 131, and the magnitude of the current may determine the magnitude of the attractive force or the repulsive force.

[0096] S222. When the normals of the reflection surfaces of the first reflector 111 and the second reflector 121 are in the direction of the target normal, the current of each electromagnetic element 132 is kept constant.

[0097] In this step, when the normals of the reflecting surfaces of the first reflector 111 and the second reflector 121 are in the direction of the target normal, it can be determined that the first reflector 111 and the second reflector 121 are already in a suitable position, and the current flowing through each electromagnetic component 132 is kept constant at this position, and the first reflector 111 or the second reflector 121 can be locked at this position.

[0098] It should be understood that, according to automatic control theory, a closed-loop control method can be used here to lock the first reflector 111 and the second reflector 121. At this time, the current flowing through the corresponding electromagnetic component 132 may not be absolutely constant, but relatively constant, that is, it oscillates repeatedly at a certain amplitude to lock the first reflector 111 or the second reflector 121.

[0099] This angle adjustment method has the characteristics of high adjustment accuracy and rapid adjustment response. In addition, this adjustment method can also realize infinite adjustment of the angles of the first reflector 111 and the second reflector 121, thereby improving the viewpoint density of the display component. This locking method does not require a separate locking structure, and has the characteristics of stable structure and easy control.

[0100] As an optional implementation, after adjusting and locking the first reflector 111 and the second reflector 121, the display method further includes:

[0101] Based on the single-frame image, controlling the laser emitter 2 to sequentially scan and illuminate all the first reflectors 111 and the second reflectors 121, and displaying a stereoscopic image through reflections of the first reflectors 111 and the second reflectors 121;

[0102] For the above-mentioned display assembly, each first reflector 111 and each second reflector 121 are equivalent to a pixel on the screen, and the laser emitter 2 emits the corresponding pixel brightness and color laser to the first reflector 111 and the second reflector 121, and the laser reflected to the left pupil 42 and the right pupil 41 by the first reflector 111 and the second reflector 121 can form an image. In addition, according to the principle of three-dimensional display, all the first reflectors 111 as pixel points can reflect the light required for the image imaging for the left eye, and all the second reflectors 121 as pixel points can reflect the light required for the image imaging for the right eye, so that the left eye and the right eye of the human body can see different images respectively, thereby realizing a three-dimensional display effect. The specific process of the laser emitter 2 emitting laser scanning can be realized by a galvanometer. The laser emitter 2 is used to irradiate each first reflector 111 and each second reflector 121 once in turn to form a frame of picture. In order to make each frame of picture coherent to form a video, the time for the laser emitter 2 to scan a single frame of image should be less than the visual retention time of the human eye.

[0103] Determine whether the position of the human eye has changed;

[0104] In this step, the specific step of determining whether the position of the human eye has changed is to use the depth camera 3 again to obtain the position information of the left eye pupil 42 and the right eye pupil 41 of the human body, and compare them with the position information of the left eye pupil 42 and the right eye pupil 41 of the human body obtained previously. If there is a deviation in the position information of the two, it means that the position of the human eye has changed. If the position information of the two is consistent, it means that the position of the human eye has not changed. Of course, in other possible implementations, another camera can be used to continuously take pictures of the human eye and compare the human eye images taken successively to determine whether the position of the human eye has changed.

[0105] If so, return to the method of using the depth camera 3 to obtain the spatial position information of the left eye pupil 42 and the right eye pupil 41 of the human body; that is, if it is determined that the position of the human eye has changed, return to step 100, and continue to execute step 200 to adjust the positions of the first reflector 111 and the second reflector 121, so as to accurately ensure that each first reflector 111 and the second reflector 121 can reflect the light emitted by the laser emitter 2 to the corresponding left eye pupil 42 and right eye pupil 41.

[0106] If not, based on the next frame image, control the laser emitter 2 to scan and illuminate all the first reflectors 111 and the second reflectors 121 in sequence, display a stereoscopic image through reflections of the first reflectors 111 and the second reflectors 121, and return to determine whether the position of the human eye has changed.

[0107] In the above steps, if it is determined that the position of the human eye has not changed, the first reflector 111 and the second reflector 121 can continue to be at the set angle, and the display of the next frame of image can be completed.

[0108] It should be understood that the above-mentioned step of determining whether the position of the human eye has changed, and the step of adjusting the position of the first reflector 111 and the second reflector 121 if it is determined to be continued, can be determined after the laser emitter 2 has scanned a frame of image, and the next frame of image can be scanned after the first reflector 111 and the second reflector 121 have been adjusted; it can also be performed during the process of the laser emitter 2 scanning a certain frame of image, for example, before the laser scans to one or several first reflectors 111 or second reflectors 121, the step of determining whether the position of the human eye has changed is performed, so as to determine whether the angle of this or these first reflectors 111 or second reflectors 121 needs to be adjusted, and if adjustment is required, it can be adjusted before the laser emitter 2 scans to this or these first reflectors 111 or second reflectors 121.

[0109] It should also be pointed out that the above only illustrates the case where the angles of the first reflector 111 and the second reflector 121 are calibrated before each frame of image is displayed. In other possible implementations, the angles of the first reflector 111 and the second reflector 121 may be calibrated at intervals of two or more frames. The specific calibration process can still be referred to the above description and will not be repeated here.

[0110] The above display method is applied to a display device, and the control device can control the first reflector 111 and the second reflector 121 in the display component to accurately reflect the laser of the laser transmitter 2 to the left eye and the right eye of the human body respectively. In this scheme, the viewpoint density of the three-dimensional display device will be determined by the angle adjustment step of the first reflector 111 and the second reflector 121 of the display component, and the viewing angle will be determined by the adjustable angle range of the first reflector 111 and the second reflector 121, so that the viewpoint density and the viewing angle no longer have a direct negative correlation, which reduces the restrictive relationship between the viewpoint density and the viewing angle, and facilitates improving the display effect of the three-dimensional display device.

[0111] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

[0112] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display device, characterized in that: include: A display assembly, the display assembly comprising a plurality of first reflector groups and second reflector groups arranged in a cross array; each of the first reflector groups comprises at least one first reflector, and each of the second reflector groups comprises at least one second reflector; the display assembly further comprises an orientation device, the orientation device being used to drive the first reflector and the second reflector to adjust their angles in a three-dimensional space and to lock the first reflector and the second reflector at a set angle; The display assembly further includes a substrate and support rods. The support rods are multiple and correspond to the first reflector and the second reflector one by one, and are used to support the corresponding first reflector or the second reflector. Each of the support rods is fixed to the substrate and hinged at the center of the corresponding first reflector or the second reflector, and the first reflector or the second reflector can be deflected relative to the corresponding support rod. The orientation devices correspond to the first reflector and the second reflector one by one, and each orientation device is used to drive the first reflector and the second reflector to deflect relative to the corresponding support rod, and to lock the corresponding first reflector or the second reflector; The orientation device includes a magnetic component and a plurality of electromagnetic components; the magnetic component is fixed to the side of the first reflector or the second reflector facing the substrate, and is arranged around the support rod; the plurality of electromagnetic components are arranged around the support rod, each of the electromagnetic components is fixed to the side of the substrate facing the first reflector or the second reflector, and is used to generate magnetic force to attract or repel the magnetic component when powered on; the orientation device also includes a spring, one end of the spring acts on the first reflector or the second reflector, and the other end of the spring acts on the substrate; The spring is used to drive the first reflector or the second reflector to reset when the first reflector or the second reflector is deflected relative to the substrate; A laser emitter, used to emit laser light to each of the first reflector and the second reflector in sequence, and display a stereoscopic image through reflection by the first reflector and the second reflector; A depth camera is used to obtain the spatial position of the left and right pupils of a human body; The control device is used to control the orientation device to adjust and lock the angles of the first reflector and the second reflector according to the spatial positions of the left eye pupil and the right eye pupil, the spatial positions of the first reflector and the second reflector, and the spatial position of the laser emitter until: the first reflector is used to reflect the laser to be incident on the left eye pupil of the human body, and the second reflector is used to reflect the laser to be incident on the right eye pupil.

2. The display device according to claim 1, characterized in that In a first direction, the first reflector group and the second reflector group are arranged in a row in sequence; In a second direction perpendicular to the first direction, each of the first reflector groups includes a plurality of first reflectors arranged in a row, and each of the second reflector groups includes a plurality of second reflectors arranged in a row.

3. A display device, characterized in that: It comprises a device body, and a display device as claimed in any one of claims 1 to 2 arranged on the device body.

4. A display method, characterized in that: Applied to the display device according to any one of claims 1 to 2, the display method comprises: Acquiring spatial position information of a left pupil and a right pupil of a human body using the depth camera; Adjusting the angles of the first reflector and the second reflector based on the spatial position information of the left eye pupil and the right eye pupil, the positions of the first reflector and the second reflector, and the position of the laser emitter, until the first reflector is used to reflect the laser to be incident on the left eye pupil of the human body, and the second reflector is used to reflect the laser to be incident on the right eye pupil; Based on a single frame image, the laser emitter is controlled to scan and illuminate all the first reflectors and the second reflectors in sequence, and a stereoscopic image is displayed through reflections of the first reflectors and the second reflectors.

5. The display method according to claim 4, characterized in that: The adjusting the angles of the first reflector and the second reflector based on the spatial position information of the left eye pupil and the right eye pupil, the positions of the first reflector and the second reflector, and the position of the laser emitter comprises: Calculate the target normal direction of the reflection surfaces of the first reflector and the second reflector based on the spatial position information of the left eye pupil and the right eye pupil, the positions of the first reflector and the second reflector, and the position of the laser emitter; The orientation device is controlled to adjust the angles of the first reflector and the second reflector, and the first reflector and the second reflector are locked when the normals of the reflection surfaces of the first reflector and the second reflector are in the direction of the target normal.

6. The display method according to claim 5, characterized in that: The orientation device includes a magnetic member and a plurality of electromagnetic members; the magnetic member is fixed to the side of the first reflector and the second reflector facing the substrate, and is arranged around the support rod; each of the electromagnetic members is fixed to the side of the substrate facing the first reflector and the second reflector, and is used to generate magnetic force to attract or repel the magnetic member when powered on; The orientation device adjusts the angles of the first reflector and the second reflector, and locks the first reflector and the second reflector when the normals of the reflection surfaces of the first reflector and the second reflector are in the direction of the target normal, including: Adjusting the current flowing through each electromagnetic element; When the normal lines of the reflection surfaces of the first reflector and the second reflector are in the direction of the target normal line, the current flowing through each of the electromagnetic elements is kept constant.

Images