Eyeball tracking device of naked eye 3D display

Abstract

The utility model discloses an eyeball tracking device of a naked eye 3D display. The eyeball tracking device comprises a mounting shell, and a wide-angle camera, a high-definition camera and a tracking assembly which are arranged in the mounting shell. The wide-angle camera is fixed to the center of the shell, and the two sides of the wide-angle camera are each provided with a set of high-definition cameras which are connected with the installation shell through the tracking assembly. The tracking assembly is composed of a rotating base, a transverse adjusting motor and a longitudinal adjusting motor. The rotating base can rotate around the vertical axis, and the transverse adjusting motor is fixed to the shell and is in power connection with the rotating base. Two groups of lug seats are arranged at the top of the rotating seat, the high-definition camera is arranged between the lug seats and can rotate around a horizontal axis, and the longitudinal adjusting motor is fixed on the rotating seat and is in power connection with the high-definition camera. A receding through groove is formed in the rotating base and located between the two sets of lug bases. According to the utility model, the tracking precision, the adjustment flexibility and the equipment stability of the naked eye 3D display are improved, and the display effect and the user experience are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to eye tracking technology field, specifically is a kind of naked eye 3D display's eye tracking device. BACKGROUND

[0002] With the rapid development of naked eye 3D display technology, more and more devices and systems are committed to providing more immersive visual experience. In traditional 3D display technology, users usually need to wear special 3D glasses to achieve the viewing effect of stereoscopic picture. However, with the increasing demand for convenience and viewing experience of users, naked eye 3D display technology has emerged. Naked eye 3D display no longer relies on external auxiliary equipment, but directly displays stereoscopic picture on the screen through grating, cylindrical lens or other optical design, enhancing the viewing comfort and convenience of users.

[0003] Although naked eye 3D display has made significant progress in many aspects, the existing naked eye 3D display device still has certain limitations in user experience, especially for audiences in different viewing positions. Due to the difference in viewing angle, the display effect may be greatly discounted, and even image overlap, distortion and other problems may occur. Therefore, how to accurately track the eye position of the audience and adjust the content of the display in real time according to the viewing angle to ensure the best 3D display effect has become a technical problem to be solved.

[0004] In order to solve this problem, some existing naked eye 3D displays begin to introduce eye tracking technology. Through the eye tracking system, the device can detect and obtain the position and line of sight direction of the user's eyes in real time, so as to adjust the display content to achieve accurate naked eye 3D effect. However, the current eye tracking device still has some deficiencies, mainly in the following aspects:

[0005] 1. Insufficient tracking accuracy: the tracking accuracy of some existing eye tracking devices in multi-angle, multi-user environment is low, and they cannot effectively cope with real-time eye positioning in multi-person scenarios.

[0006] 2. Slow system response speed: eye tracking devices have very high real-time requirements. If the system response is delayed, the audience may not be able to experience the adjusted 3D effect in real time, resulting in poor visual experience.

[0007] 3. Insufficient device stability: during operation, especially in the case of multi-dimensional adjustment, the existing device may have problems such as loose structure or inaccurate adjustment angle, affecting the tracking effect of the camera on the eyes.

[0008] Therefore, in view of the deficiencies of the existing naked eye 3D display eye tracking device, a tracking device capable of multi-angle, high-precision adjustment and strong stability is designed to become a key technical requirement to improve the experience of naked eye 3D display. Practical new content

[0009] In view of the above deficiencies in the prior art, the utility model aims at providing a naked eye 3D display eyeball tracking device, which significantly improves the display effect and user experience of the naked eye 3D display and solves the problems of low tracking precision, inflexible adjustment and insufficient equipment stability in the prior art.

[0010] The utility model discloses a technical scheme that is adopted to realize the above-mentioned purpose: a naked eye 3D display eyeball tracking device, which comprises a mounting shell and a wide-angle camera, a high-definition camera and a tracking assembly assembled in the mounting shell.

[0011] The tracking assembly comprises a rotating seat, a horizontal adjustment motor and a vertical adjustment motor, the rotating seat is rotatably installed in the mounting shell and rotates around a vertical axis, the horizontal adjustment motor is fixedly installed in the mounting shell and is power-connected with the rotating seat, two groups of ear seats are fixedly connected to the top of the rotating seat, the high-definition camera is rotatably installed between the two groups of ear seats and rotates around a horizontal axis, the vertical adjustment motor is fixedly installed on the rotating seat and is power-connected with the high-definition camera, a clearance slot is formed in the rotating seat and is arranged between the two groups of ear seats.

[0012] To ensure that the mounting shell can be stably installed in the naked eye 3D display and that the wide-angle camera and the high-definition camera can stably capture the eye information of the audience, the following technical scheme is provided.

[0013] A fitting opening is formed in the front side of the mounting shell, a light-transmitting protective plate is fixedly installed on the outside of the fitting opening, the wide-angle camera and the high-definition camera are both assembled on the inside of the light-transmitting protective plate, and a wedge-shaped clamping groove is formed in the outer wall of each side of the mounting shell.

[0014] In some implementations, to ensure that the horizontal adjustment motor can drive the rotating seat to stably operate, the following technical scheme is provided.

[0015] A sector gear is fixedly connected to the rotating seat, the sector gear is arranged on the outside of the clearance slot, a driving shaft is rotatably installed in the mounting shell, a driving gear and a worm gear A are fixedly connected to the driving shaft, the driving gear is in engagement with the sector gear, a worm A is fixedly connected to the output shaft of the horizontal adjustment motor, and the worm A is combined with the worm gear A.

[0016] In some implementations, to ensure that the wide-angle camera can be stably installed in the mounting shell and that the high-definition camera can be stably installed on the ear seat, the following technical solutions are provided.

[0017] The mounting shell is fixedly installed with an assembly bracket, and the wide-angle camera is fixedly installed on the assembly bracket and arranged towards the light-transmitting protective plate; coaxially arranged assembly pins are fixedly connected to the two sides of the high-definition camera, and the assembly pins are rotatably installed in the ear seat.

[0018] In some implementations, to ensure that the longitudinal adjustment motor can stably drive the high-definition motor to rotate, the following technical solutions are provided.

[0019] One group of the assembly pins is fixedly connected with a worm wheel B, and the output shaft of the longitudinal adjustment motor is fixedly connected with a worm B, and the worm B is combined with the worm wheel B.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. High-precision eye tracking: By setting the combination of the wide-angle camera and the high-definition camera, high-precision tracking of the audience's eye position is achieved. The wide-angle camera is used to capture the overall facial position of the audience, while the high-definition camera can further accurately lock the eye position and orientation angle after determining the audience's eye area. Through the cooperation of the two cameras, the accuracy of eye positioning is ensured, thereby providing reliable data support for the visual effect adjustment of the naked-eye 3D display.

[0022] 2. Real-time dynamic adjustment: Through the combination of the horizontal adjustment motor and the longitudinal adjustment motor, the device can quickly respond to the head movement and viewing angle changes of the audience, and realize independent dynamic adjustment of the high-definition camera. This real-time response capability ensures that the naked-eye 3D display can present the best 3D display effect under different audience viewing angles, eliminating image distortion and overlap problems, and significantly improving user experience.

[0023] 3. Strong device stability: The use of worm and worm gear transmission structure enables the horizontal adjustment motor and the longitudinal adjustment motor to maintain the characteristics of deceleration and torque increase and one-way self-locking during operation, ensuring the stability and accuracy of the adjustment action. Even when stopped, the worm wheel can still maintain the stability of the camera's posture through the self-locking function, avoiding camera position deviation and ensuring long-term stability and reliability.

[0024] 4. Flexible angle adjustment function: Through the design of the rotating seat, the high-definition camera can rotate flexibly around the vertical and horizontal axes, and combined with the mounting structure of the ear seat, the adjustment range of the camera is further improved. This multi-dimensional adjustment mechanism can adapt to different audience viewing positions and angles, ensuring that each audience can obtain ideal naked-eye 3D experience.

[0025] In summary, the present application significantly improves the display effect and user experience of the naked eye 3D display through the precise eye tracking system, stable multi-dimensional adjustment mechanism and easy-to-install design, and solves the problems of low tracking accuracy, inflexible adjustment and insufficient equipment stability in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of the present application;

[0027] Figure 2 It is a schematic view of the arrangement of the wide-angle camera, high-definition camera and tracking assembly;

[0028] Figure 3 It is a structural schematic view of the combination of the high-definition camera and tracking assembly;

[0029] Figure 4 It is a structural schematic view of the rotating seat and the components mounted thereon;

[0030] Figure 5 It is a structural schematic view of the high-definition camera.

[0031] In the figure: 1 mounting shell, 11 assembly opening, 12 light-transmitting protective plate, 13 wedge-shaped clamping groove, 2 wide-angle camera, 21 assembly support, 3 high-definition camera, 31 assembly pin shaft, 32 worm gear B, 4 tracking assembly, 41 rotating seat, 411 ear seat, 412 accommodation slot, 413 sector gear, 42 horizontal adjustment motor, 421 worm A, 43 vertical adjustment motor, 431 worm B, 44 drive shaft, 441 drive gear, 442 worm A. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-5 An eye tracking device of a naked eye 3D display includes a mounting shell 1 and a wide-angle camera 2, a high-definition camera 3 and a tracking assembly 4 assembled in the mounting shell 1. The wide-angle camera 2 is fixedly installed at the center position of the mounting shell 1, and a group of high-definition cameras 3 is arranged on both sides of the wide-angle camera 2. The high-definition cameras 3 are assembled in the mounting shell 1 through the tracking assembly 4.

[0034] The tracking assembly 4 comprises a rotating seat 41, a transverse adjustment motor 42 and a longitudinal adjustment motor 43. The rotating seat 41 is rotatably installed in the mounting shell 1 and rotates around a vertical axis. The transverse adjustment motor 42 is fixedly installed in the mounting shell 1 and is in power connection with the rotating seat 41. The rotating seat 41 has two groups of ear seats 411 fixedly connected to the top thereof. The high-definition camera 3 is rotatably installed between the two groups of ear seats 411 and rotates around a horizontal axis. The longitudinal adjustment motor 43 is fixedly installed on the rotating seat 41 and is in power connection with the high-definition camera 3. The rotating seat 41 is provided with a displacement through slot 412 arranged between the two groups of ear seats 411.

[0035] The mounting shell 1 can be fixedly installed in the shell of the naked-eye 3D display. When tracking the eyeballs of the audience watching the naked-eye 3D display, the front image is first captured by the wide-angle camera 2, and the eye position of the audience is determined by the processing system with the help of artificial intelligence algorithm.

[0036] Then, the two groups of tracking assemblies 4 are independently controlled. According to the eye position information, the shooting angles of the two groups of high-definition cameras 3 are independently adjusted. The eyes of the audience are accurately positioned according to the binocular positioning principle to determine the orientation angle of the eyeballs. Then, the naked-eye 3D display is adjusted according to the orientation angle of the eyeballs, so that the audience can experience high-quality 3D display effect.

[0037] For the tracking assembly 4, the rotating seat 41 and the high-definition camera 3 mounted thereon are driven by the transverse adjustment motor 42 to rotate synchronously, so as to adjust the angle of the high-definition camera 3 in the horizontal plane. The high-definition camera 3 is driven by the longitudinal adjustment motor 43 to rotate around the horizontal axis, so as to adjust the angle of the high-definition camera 3 in the vertical plane.

[0038] The ear seats 411 arranged on the rotating seat 41 can ensure stable installation of the high-definition camera 3. The displacement through slot 412 can avoid spatial motion interference between the high-definition camera 3 and the rotating seat 41 when the high-definition camera 3 is adjusted in angle by the longitudinal adjustment motor 43.

[0039] In the specific adjustment process, the clear eye image captured by the high-definition camera 3 is processed by the processing system to determine the orientation angle of the eyeballs.

[0040] In order to ensure that the mounting shell 1 can be stably installed in the naked-eye 3D display and that the wide-angle camera 2 and the high-definition camera 3 can stably capture the eye information of the audience, the following technical solutions are provided.

[0041] The front side of the mounting shell 1 is provided with an assembly opening 11, and the outer side of the assembly opening 11 is fixedly provided with a light-transmitting protective plate 12. The wide-angle camera 2 and the high-definition camera 3 are both arranged on the inner side of the light-transmitting protective plate 12. The two side walls of the mounting shell 1 are provided with wedge-shaped clamping grooves 13.

[0042] The assembly opening 11 can ensure that the wide-angle camera 2, the high-definition camera 3 and the tracking assembly 4 are stably installed in the mounting shell 1. The light-transmitting protective plate 12 can protect the components on the inner side and ensure that the wide-angle camera 2 and the high-definition camera 3 can normally shoot pictures. The wedge-shaped clamping grooves 13 can stably install the mounting shell 1 in the naked-eye 3D display.

[0043] In order to ensure that the horizontal adjustment motor 42 can stably drive the rotating seat 41 to operate, the following technical solutions are provided.

[0044] The rotating seat 41 is fixedly connected with a sector gear 413, and the sector gear 413 is arranged on the outer side of the accommodation groove 412. A driving shaft 44 is rotatably arranged in the mounting shell 1. The driving shaft 44 is fixedly connected with a driving gear 441 and a worm gear A 442. The driving gear 441 is in engagement with the sector gear 413. The output shaft of the horizontal adjustment motor 42 is fixedly connected with a worm A 421. The worm A 421 is matched with the worm gear A 442.

[0045] When the horizontal adjustment motor 42 operates, the driving shaft 44 and the driving gear 441 can be driven to rotate through the combination of the worm A 421 and the worm gear A 442, so that the sector gear 413 and the rotating seat 41 are stably driven to operate by the driving gear 441.

[0046] Due to the combination of the worm A 421 and the worm gear A 442 having the characteristics of speed reduction, torque increase and one-way self-locking, the horizontal adjustment motor 42 can stably drive the rotating seat 41 to operate. In the shutdown state of the horizontal adjustment motor 42, the worm gear A 442 can be locked by the worm A 421, so as to ensure the posture stability of the rotating seat 41.

[0047] In order to ensure that the wide-angle camera 2 can be stably installed in the mounting shell 1 and that the high-definition camera 3 can be stably installed on the ear seat 411, the following technical solutions are provided.

[0048] The mounting shell 1 is fixedly provided with an assembly bracket 21. The wide-angle camera 2 is fixedly arranged on the assembly bracket 21 and faces the light-transmitting protective plate 12. The high-definition camera 3 is fixedly connected with coaxially arranged assembly pins 31, and the assembly pins 31 are rotatably arranged in the ear seat 411.

[0049] The assembly bracket 21 is assembled into the mounting shell 1 by means of bolt fixation. The assembly position of the wide-angle camera 2 can be adjusted according to the size of the assembly bracket 21.

[0050] The assembly pin 31 is arranged in a horizontal direction, and the assembly pin 31 on the HD camera 3 can ensure that the HD camera 3 rotates stably on the ear seat 411 on the rotating seat 41.

[0051] To ensure that the longitudinal adjustment motor 43 can drive the high-definition motor to rotate stably, the following technical solution is provided.

[0052] A worm gear B32 is fixedly connected to one set of assembly pins 31, and a worm B431 is fixedly connected to the output shaft of the longitudinal adjustment motor 43. The worm B431 and the worm gear B32 are matched and combined.

[0053] When the longitudinal adjustment motor 43 is running, it can rotate through the worm gear B431, thereby driving the worm wheel B32 and the high-definition camera 3 to rotate stably around the assembly pin 31.

[0054] Because the combination of worm gear B431 and worm wheel B32 has the characteristics of speed reduction and torque increase and one-way self-locking, it can enable the longitudinal adjustment motor 43 to drive the rotating seat 41 to operate stably. When the longitudinal adjustment motor 43 is stopped, the worm wheel B32 can be locked by the action of worm gear B431, thereby ensuring the attitude stability of the high-definition camera 3.

[0055] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An eye tracking device for a naked-eye 3D display, characterized by: The application relates to a wide-angle camera (2), a high-definition camera (3) and a tracking assembly (4) which are assembled in a mounting shell (1), the wide-angle camera (2) is fixedly arranged at the center of the mounting shell (1), a group of high-definition cameras (3) are arranged on both sides of the wide-angle camera (2), and the high-definition cameras (3) are assembled in the mounting shell (1) through the tracking assembly (4). The tracking assembly (4) comprises a rotating seat (41), a horizontal adjusting motor (42) and a vertical adjusting motor (43), the rotating seat (41) is rotatably arranged in the mounting shell (1) and rotates around a vertical axis, the horizontal adjusting motor (42) is fixedly arranged in the mounting shell (1) and is in power connection with the rotating seat (41), two groups of ear seats (411) are fixedly connected to the top of the rotating seat (41), the high-definition cameras (3) are rotatably arranged between the two groups of ear seats (411) and rotate around a horizontal axis, the vertical adjusting motor (43) is fixedly arranged on the rotating seat (41) and is in power connection with the high-definition cameras (3), and a gap slot (412) is arranged on the rotating seat (41) and between the two groups of ear seats (411).

2. The eye-globe tracking device for naked-eye 3D display according to claim 1, characterized in that: A mounting opening (11) is arranged on the front side of the mounting shell (1), a light-transmitting protective plate (12) is fixedly arranged on the outer side of the mounting opening (11), the wide-angle camera (2) and the high-definition cameras (3) are arranged on the inner side of the light-transmitting protective plate (12), and wedge-shaped clamping grooves (13) are arranged on the outer walls of the mounting shell (1).

3. The eye tracking device for an autostereoscopic 3D display according to claim 1, characterized in that: A sector gear (413) is fixedly connected to the rotating seat (41) and arranged on the outer side of the gap slot (412), a driving shaft (44) is rotatably arranged in the mounting shell (1), a driving gear (441) and a worm gear A (442) are fixedly connected to the driving shaft (44), the driving gear (441) is in engagement with the sector gear (413), a worm A (421) is fixedly connected to the output shaft of the horizontal adjusting motor (42), and the worm A (421) is matched with the worm gear A (442).

4. The eye-globe tracking device of naked-eye 3D display according to claim 2, characterized in that: A mounting support (21) is fixedly arranged in the mounting shell (1), the wide-angle camera (2) is fixedly arranged on the mounting support (21) and faces the light-transmitting protective plate (12), coaxial mounting pin shafts (31) are fixedly connected to the two sides of the high-definition cameras (3), and the mounting pin shafts (31) are rotatably arranged in the ear seats (411).

5. The eye-globe tracking device of naked-eye 3D display according to claim 4, characterized in that: A worm gear B (32) is fixedly connected to one group of the mounting pin shafts (31), a worm B (431) is fixedly connected to the output shaft of the vertical adjusting motor (43), and the worm B (431) is matched with the worm gear B (32).

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