Eye movement tracking simulation device

Abstract

The utility model discloses an eye movement tracking simulation device, and belongs to the technical field of detection. The eye movement tracking simulation device comprises a support and a camera. The support is provided with a window. The camera is arranged on the support according to at least one of the following modes: the camera can move on the extension plane of the window; the window is rotatable about a rotation axis substantially parallel or perpendicular to an extension plane of the window. Therefore, the position of the camera in the extension plane of the window and / or the orientation of the camera can be changed, the pose of the camera can be adjusted, more application scenes can be simulated according to the pose, for example, deployment of the camera on the head-mounted display can be simulated by changing the types of the camera, such as an event camera, an infrared camera and a common camera, and the use experience of the camera is improved. Eye movement tracking scenes or expression tracking scenes are simulated, and design and assembly of the head-mounted display are facilitated.

Description

Technical Field

[0001] This application belongs to the field of detection technology, and in particular relates to an eye-tracking simulation device. Background Technology

[0002] Eye-tracking technology is an effective means of understanding human cognitive behavior and is widely used in electronic devices such as Augmented Reality (AR), Virtual Reality (VR), Mixed Reality (MR), and Extended Reality (XR). It typically involves using an infrared light source and an eye-tracking camera positioned near the outer edge of the optical engine to track the pupil and obtain the position and direction of the gaze. However, due to the different sizes of optical engines, using the same eye-tracking camera deployment position and angle for different types of optical engines can affect the eye-tracking results, leading to insufficient eye-tracking accuracy. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an eye-tracking simulation device capable of adjusting the pose of the camera.

[0004] In a first aspect, this application provides an eye-tracking simulation device, comprising:

[0005] The bracket has a viewing window;

[0006] The camera is arranged on the bracket in at least one of the following ways:

[0007] In a manner that allows movement along the extended plane of the viewport;

[0008] It can rotate about an axis of rotation that is substantially parallel or perpendicular to the extension plane of the window.

[0009] According to the eye-tracking simulation device of this application, the camera is designed to move in a manner that allows it to move within the extended plane of the viewing window and / or rotate about a rotation axis that is substantially parallel or perpendicular to the extended plane of the viewing window. This allows for changes in the camera's position within the extended plane of the viewing window and / or its orientation, thereby adjusting the camera's pose. This enables the simulation of more application scenarios, facilitating the design and assembly of head-mounted displays. The phrase "rotation axis substantially parallel or perpendicular to the extended plane of the viewing window" means that the error between the rotation axis and the extended plane of the viewing window is small, for example, less than 5%.

[0010] Taking simulated eye-tracking scenarios as an example, this device can be applied in the following scenarios:

[0011] Application Scenario 1: When selecting from various optical engines of different specifications, the eye-tracking simulation device described above can be used to simulate eye-tracking scenarios. The position and / or angle of the camera need to be adjusted adaptively according to the specifications of different optical engines, and the type of optical engine to be selected is determined based on the eye-tracking data collected under different optical engines.

[0012] Application Scenario 2: After determining the optical engine specifications, it is necessary to adjust the position and / or angle of the camera based on the specific specifications of the optical engine, find a suitable deployment position and / or angle for the camera, and determine the deployment relationship between the optical engine and the camera.

[0013] Application Scenario 3: When training an eye-tracking algorithm model or testing and verifying the accuracy of the eye-tracking algorithm model, it is necessary to adjust the position and / or angle of the camera to simulate eye-tracking scenarios under different conditions (such as interpupillary distance), so as to facilitate the construction and optimization of the eye-tracking algorithm model.

[0014] Furthermore, by changing the type of camera, such as an event camera, an infrared camera, or a regular camera, the deployment of cameras on the head-mounted display can be simulated, enabling the eye-tracking simulation device to also simulate facial expression tracking scenarios.

[0015] According to one embodiment of this application, at least one of the cameras is constrained to the bracket in a manner that allows it to rotate circumferentially about the viewport.

[0016] According to one embodiment of this application, the support includes:

[0017] A connecting frame forms the viewing window, and the connecting frame is provided with an annular groove;

[0018] The mounting part is slidably connected to the annular groove, and the camera is disposed in the mounting part;

[0019] The second driving component is disposed on the connecting frame and is connected to the mounting part in a transmission manner.

[0020] According to one embodiment of this application, the support further includes:

[0021] An internal gear ring, wherein the mounting portion is connected to the internal gear ring;

[0022] A gear is located at the output end of the second drive member, the gear being located inside the internal gear ring and meshing with the internal gear ring.

[0023] According to one embodiment of this application, at least one of the cameras is constrained to the bracket in a manner that allows it to move radially along the viewport.

[0024] This application does not limit the shape of the window; it can be closed or have a notch; it can be rectangular or circular. "Radial direction of the window" does not mean that the window is limited to a circle. If the window is other shapes such as rectangular or irregular shapes, the radial direction of the window is the direction from the center of the window to the edge of the window.

[0025] According to one embodiment of this application, the support includes:

[0026] The mounting component is provided with a through groove extending through its thickness direction and a slide groove extending radially along the viewing window;

[0027] An adjustment component is accommodated in the through groove and slidably connected to the slide groove, and the camera is disposed on the adjustment component;

[0028] A third driving component is disposed on the mounting component, and the output end of the third driving component is connected to the adjustment assembly in a transmission manner.

[0029] According to one embodiment of this application, the adjustment component includes:

[0030] A connector is accommodated in the through groove and slidably connected to the slide groove;

[0031] A connecting shaft passes through the connector in a direction perpendicular to the radial direction of the viewing window, and the connecting shaft is connected to the camera;

[0032] A knob is located at one end of the connecting shaft, outside the connector and inside the through groove.

[0033] According to one embodiment of this application, it further includes a base, and there are two supports spaced laterally on the base.

[0034] According to one embodiment of this application, at least one support is constrained to the base in a manner that allows it to move laterally.

[0035] According to one embodiment of this application, a chin rest is also included, wherein the chin rest and the camera are located on the same side of the bracket.

[0036] According to one embodiment of this application, the chin support has a vertically arranged telescopic rod.

[0037] According to one embodiment of this application, the bracket is further provided with an infrared light source module that extends circumferentially along the window.

[0038] According to one embodiment of this application, a display is also included, which is spaced apart from the bracket in a direction perpendicular to the plane of the viewing window.

[0039] According to one embodiment of this application, the bracket has at least a ring-shaped partial structure, the central hole enclosed by the inner ring side of the partial structure forms the viewing window, and the partial structure is provided with a mounting portion located around the viewing window, and the camera is disposed on the mounting portion.

[0040] According to one embodiment of this application, at least one of the mounting portions is disposed at the lower part of the partial structure.

[0041] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0042] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0043] Figure 1 This is a schematic diagram of the structure of the eye-tracking simulation device using a display screen provided in the embodiments of this application;

[0044] Figure 2 This is a schematic diagram of the structure of the eye-tracking simulation device using a projector provided in the embodiments of this application;

[0045] Figure 3 This is a schematic diagram of the structure of the eye-tracking simulation device provided in the embodiments of this application without a display.

[0046] Figure 4 This is a partial schematic diagram of the first type of bracket and mounting part provided in the embodiments of this application;

[0047] Figure 5 This is one of the partial schematic diagrams showing the cooperation between the bracket and the mounting part in the second type provided in the embodiments of this application;

[0048] Figure 6 This is a second partial schematic diagram of the cooperation between the bracket and the mounting part provided in the embodiments of this application;

[0049] Figure 7 This is the third partial schematic diagram of the cooperation between the bracket and the mounting part in the second embodiment of this application;

[0050] Figure 8 This is a partial cross-sectional view of the second type of bracket and mounting part provided in the embodiments of this application;

[0051] Figure 9 This is a schematic diagram of the eye-tracking simulation device provided in this application embodiment without a chin support.

[0052] Figure label:

[0053] 100. Base;

[0054] 210. Display screen; 220. Projector;

[0055] 300, bracket; 301, center hole;

[0056] 310. Connecting frame; 311. Annular groove;

[0057] 320. Internal gear ring;

[0058] 330. Gear;

[0059] 340. Second driving component;

[0060] 400. Installation Department;

[0061] 410. Mounting component; 411. Groove; 412. First rolling element; 413. Slide groove; 414. Through groove;

[0062] 420. Adjustment component; 421. Connector; 422. Camera; 423. Knob;

[0063] 430. Third drive component;

[0064] 500. First driving component;

[0065] 610. Light-emitting elements;

[0066] 700, chin support;

[0067] 710. Mounting block; 711. Guide groove;

[0068] 720. Support rod; 721. Guide block;

[0069] 730. Bracket body; 731. Arc groove. Detailed Implementation

[0070] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0071] The following is for reference. Figures 1-9 The present application describes an eye-tracking simulation device, which includes a support 300 and a camera 422.

[0072] The bracket 300 has a viewing window; the camera 422 is arranged on the bracket 300 in at least one of the following ways:

[0073] In a way that allows movement along the extended plane of the viewport;

[0074] It can rotate about an axis of rotation that is substantially parallel or perpendicular to the extended plane of the viewport.

[0075] Designing the camera 422 in a manner that allows it to move within the extended plane of the viewport and / or rotate about an axis of rotation substantially parallel or perpendicular to the extended plane of the viewport means that the camera 422 can be arranged on the support 300 in the following ways:

[0076] Method 1: Camera 422 can move on the extended plane of the viewport. Figure 1 Taking the view direction shown as an example, if the window extends in the vertical plane, then the camera 422 moves in the vertical plane;

[0077] Method 2: Camera 422 can rotate about a rotation axis that is substantially parallel to the extended plane of the viewport. Figure 1 Taking the view shown as an example, the window extends in the vertical plane, and the axis of rotation is basically parallel to the vertical plane;

[0078] Method 3: Camera 422 can rotate about a rotation axis, which is substantially perpendicular to the extended plane of the viewport. Figure 1 Taking the view shown as an example, the window extends in the vertical plane, and the axis of rotation is basically perpendicular to the vertical plane;

[0079] Method 4: The camera 422 can move in the extended plane of the viewport, and the camera 422 can rotate about a rotation axis that is substantially parallel to the extended plane of the viewport.

[0080] Method 5: The camera 422 can move in the extended plane of the viewport, and the camera 422 can rotate about a rotation axis that is substantially perpendicular to the extended plane of the viewport.

[0081] "Axis of rotation that is substantially parallel or perpendicular to the extended plane of the viewport" means that the error between the axis of rotation and the extended plane of the viewport is less than 5%.

[0082] In this application, the camera 422 is designed to move in a manner that allows it to move on the extended plane of the viewport and / or to rotate about a rotation axis that is substantially parallel or perpendicular to the extended plane of the viewport. This allows the position of the camera 422 within the extended plane of the viewport and / or the orientation of the camera 422 to be changed, thereby adjusting the pose of the camera 422. This enables the simulation of more application scenarios and facilitates the design and assembly of the head-mounted display.

[0083] Taking a simulated eye-tracking scenario as an example, this eye-tracking simulation device can be applied in the following scenarios:

[0084] Application Scenario 1: When selecting from various optical engines of different specifications, the eye-tracking simulation device mentioned above can be used to simulate eye-tracking scenarios. The position and / or angle of the camera 422 need to be adjusted adaptively according to the specifications of different optical engines, and the type of optical engine to be selected is determined based on the eye-tracking data collected under different optical engines.

[0085] Application Scenario 2: After determining the optical engine specifications, it is necessary to adjust the position and / or angle of the camera 422 based on the specific specifications of the optical engine, and find a suitable deployment position and / or angle for the camera 422 in order to determine the deployment relationship between the optical engine and the camera 422.

[0086] Application Scenario 3: When training an eye-tracking algorithm model or testing and verifying the accuracy of the eye-tracking algorithm model, it is necessary to adjust the position and / or angle of the camera 422 to simulate eye-tracking scenarios under different conditions (such as interpupillary distance), so as to facilitate the construction and optimization of the eye-tracking algorithm model.

[0087] Furthermore, the deployment of camera 422 on the head-mounted display can be simulated by changing the type of camera 422, such as an event camera, an infrared camera, or a regular camera, so that the eye-tracking simulation device can also simulate facial expression tracking scenarios.

[0088] In some embodiments, such as Figures 1 to 3 , Figure 9 As shown, the eye-tracking simulation device also includes a base 100, and two supports 300 are arranged laterally on the base 100. The base 100 may be made of materials including, but not limited to, stainless steel, aluminum alloy, or titanium alloy. Of course, in other embodiments, the base 100 may be omitted, and the two supports 300 may be placed directly at intervals; this embodiment does not impose specific limitations on this.

[0089] It is understood that there are two brackets 300 arranged laterally at intervals on the base 100, and each bracket 300 is equipped with at least one camera 422 for tracking the user's eyes. It should be noted that the specific number of cameras 422 can be adjusted according to the actual needs of the optical engine; this embodiment does not impose a specific limitation on this. It is understood that, typically, to improve eye-tracking accuracy, multiple cameras 422 are required, arranged at intervals along the circumference of the viewing window.

[0090] In some embodiments, such as Figures 1 to 3 , Figure 9As shown, at least one bracket 300 is constrained to the base 100 in a laterally movable manner to adjust the lateral distance between the two brackets 300, thereby adapting to the interpupillary distance of different inspectors and reducing inspection costs. "At least one bracket 300 is constrained to the base 100 in a laterally movable manner" means that only one bracket 300 can be configured to move laterally closer to or further away from the other bracket 300, or both brackets 300 can be configured to move laterally, allowing them to move closer or further apart, or the positions of the two brackets 300 on the base 100 can be adjusted to adapt to installation environment requirements. Of course, in other embodiments, the brackets 300 can also be relatively fixed on the base 100; this embodiment does not impose specific limitations on this.

[0091] In some embodiments, such as Figure 3 and Figure 9 As shown, both supports 300 can move laterally along the base 100. The eye-tracking simulation device also includes a first drive member 500. The fixed end of the first drive member 500 is disposed on the base 100, and the output end of the first drive member 500 is connected to the two supports 300 respectively, for driving the two supports 300 to move closer or further apart. That is, by using the first drive member 500 to move the two supports 300 simultaneously, not only can the detection cost be reduced and the detection efficiency improved, but the symmetry of the movement of the two supports 300 can also be ensured. Exemplarily, the first drive member 500 includes, but is not limited to, an electric lead screw; this embodiment does not impose specific limitations on this.

[0092] Of course, in other embodiments, only one first driving member 500 may be provided, with the output end of the first driving member 500 connected to one of the brackets 300; or two first driving members 500 may be provided, each corresponding to one of the brackets 300, with the fixed ends of both first driving members 500 provided on the base 100, and the output ends of the two first driving members 500 respectively connected to the corresponding brackets 300 for driving the corresponding brackets 300 to move. This embodiment does not impose specific limitations on this.

[0093] In some embodiments, such as Figures 3 to 9 As shown, the bracket 300 has at least a ring-shaped partial structure. The central hole 301 enclosed by the inner ring of the partial structure forms a viewing window, and the partial structure is provided with a mounting part 400 located around the viewing window. The camera 422 is disposed in the mounting part 400. It should be noted that the size of the central hole 301 can be designed according to actual needs, and this embodiment does not impose specific limitations on it.

[0094] It should be noted that the axis of the central hole 301 is perpendicular to the direction of relative movement of the two supports 300.

[0095] Understandably, the camera 422 is located on the mounting part 400, that is, on the outer edge near the center hole 301. This not only reduces obstruction of the inspector's line of sight, but also makes it easier for the camera 422 to be accurately aimed at the inspector's eyes, ensuring the accuracy of the inspection.

[0096] It should be noted that this application does not limit the shape of the window; it can be closed or have a notch; it can be rectangular or circular. "Radial direction of the window" does not mean that the window is limited to a circle. If the window is other shapes such as rectangular or irregular shapes, the radial direction of the window is the direction from the center of the window to the edge of the window.

[0097] In some embodiments, such as Figures 3 to 9 As shown, at least one camera 422 is constrained to the bracket 300 in a manner that allows it to rotate circumferentially around the viewing window. That is, the camera 422 rotates about the axis of the central hole 301, enabling corresponding adjustments based on the position of the eye-tracking camera of different optical engines, thereby improving detection efficiency.

[0098] In some embodiments, such as Figures 4 to 8 As shown, the bracket 300 includes a connecting frame 310, an internal gear ring 320, and at least one gear 330. The connecting frame 310 forms a central hole 301 and is slidably engaged with the mounting portion 400. The internal gear ring 320 is rotatably disposed on the connecting frame 310 and connected to the mounting portion 400, and the internal gear ring 320 and the central hole 301 are coaxial. The gear 330 is rotatably disposed on the connecting frame 310 and meshes with the internal gear ring 320. The axis of the gear 330 is parallel to the axis of the central hole 301.

[0099] It should be noted that in some embodiments, the connecting frame 310 is disposed on the base 100 by the first driving member 500 to realize the lateral movement of the connecting frame 310 relative to the base 100.

[0100] It is understood that the connecting frame 310 forms a central hole 301, and the central hole 301, gear 330, and internal gear ring 320 are arranged sequentially outward from the center of the central hole 301. One end of the mounting part 400 is slidably engaged with the portion of the connecting frame 310 located at the outer edge of the central hole 301, and the other end of the mounting part 400 is connected to the internal gear ring 320. That is, by driving the gear 330 located inside the internal gear ring 320 to rotate, the internal gear ring 320 meshing with the gear 330 will rotate relative to the connecting frame 310, thereby enabling the camera 422 to be adjusted in the circumferential direction along the central hole 301 via the mounting part 400. In addition, the engagement of the internal gear ring 320 and the gear 330 can also reduce the outer diameter of the bracket 300, reduce the possibility of interference, and make the structure of the eye-tracking simulation device more compact.

[0101] It should be noted that, in this embodiment, as Figures 4 to 8As shown, the internal gear ring 320 has a ring-shaped local structure.

[0102] In some embodiments, such as Figure 6 As shown, the bracket 300 also includes a second driving member 340. The fixed end of the second driving member 340 is disposed on the connecting bracket 310, and the output end of the second driving member 340 is connected to the gear 330 for driving the gear 330 to rotate. The second driving member 340 includes, but is not limited to, a rotary motor.

[0103] Of course, in some other embodiments, the two ends of the mounting part 400 may be slidably engaged with the connecting frame 310, and the driving end of the second driving member 340 may be directly connected to the mounting part 400 to drive the mounting part 400 to slide around the center hole 301, so that the position of the camera 422 relative to the bracket 300 along the center hole 301 can be adjusted through the mounting part 400. This embodiment does not impose specific limitations on this.

[0104] In some embodiments, such as Figure 5 , Figure 7 and Figure 8 As shown, the connecting bracket 310 also forms an annular groove 311, which is coaxial with the central hole 301. The end of the mounting part 400 away from the internal gear ring 320 slides in conjunction with the annular groove 311. It should be noted that the size of the annular groove 311 can be designed according to actual needs, and this embodiment does not impose specific limitations on it.

[0105] It is understandable that the center hole 301, the annular groove 311, the gear 330 and the internal gear ring 320 are arranged outward from the center of the center hole 301. The annular groove 311 serves as a guide to ensure that the mounting part 400 is always coaxial with the center hole 301 during the adjustment process, thus ensuring the accuracy and reliability of the position of the mounting part 400.

[0106] In some embodiments, such as Figure 6 As shown, the bracket 300 includes a connecting frame 310, a mounting part 400, and a second driving member 340. The connecting frame 310 forms a viewing window and has an annular groove 311. The mounting part 400 is slidably connected to the annular groove 311, and the camera 422 is disposed in the mounting part 400. The second driving member 340 is disposed in the connecting frame 310 and is connected to the mounting part 400 in a transmission manner.

[0107] It is understood that the connecting bracket 310 forms a viewing window, the end of the mounting part 400 slides in conjunction with the annular groove 311, and the driving end of the second driving member 340 is connected to the mounting part 400 to drive the mounting part 400 to slide around the viewing window, so that the position of the camera 422 relative to the bracket 300 along the viewing window can be adjusted through the mounting part 400. This embodiment does not impose specific limitations on this.

[0108] In some embodiments, such as Figure 8 As shown, the mounting portion 400 forms a groove 411 for accommodating the first rolling element 412, and the first rolling element 412 rolls in engagement with the annular groove 311. The first rolling element 412 includes, but is not limited to, balls. It should be noted that the number and size of the first rolling elements 412 can be designed according to actual needs, and this embodiment does not impose any limitations on this.

[0109] It is understandable that by providing a first rolling element 412 in the groove 411 that rolls into the annular groove 311, friction can be reduced, making the movement of the mounting part 400 relative to the annular groove 311 smoother and more precise, and increasing the durability of the bracket 300 and the mounting part 400.

[0110] In some embodiments, such as Figure 8 As shown, the groove 411 radially penetrates the mounting portion 400 along the central hole 301, so that the outer wall of the first rolling element 412 can not only roll contact with the base of the annular groove 311, but also with the inner sidewall of the annular groove 311 on both sides radially (within the direction of the groove). Figure 8 Taking the direction shown as an example, the inner sidewall of the annular groove 311 has rolling contact on both sides in the radial direction (upper and lower sides) to increase the contact area, which helps to distribute the load, reduce wear, and extend the service life.

[0111] In some embodiments, such as Figures 4 to 8 As shown, the bracket 300 also includes an internal gear ring 320 and a gear 330. The internal gear ring 320 is connected to the mounting part 400. The gear 330 is located at the output end of the second drive member 340 and is located inside the internal gear ring 320 and meshes with the internal gear ring 320.

[0112] It is understood that the connecting frame 310 forms a central hole 301, and the central hole 301, gear 330, and internal gear ring 320 are arranged sequentially outward from the center of the central hole 301. One end of the mounting part 400 is slidably engaged with the portion of the connecting frame 310 located at the outer edge of the central hole 301, and the other end of the mounting part 400 is connected to the internal gear ring 320. That is, by driving the gear 330 located inside the internal gear ring 320 to rotate, the internal gear ring 320 meshing with the gear 330 will rotate relative to the connecting frame 310, thereby enabling the camera 422 to be adjusted in the circumferential direction along the central hole 301 via the mounting part 400. In addition, the engagement of the internal gear ring 320 and the gear 330 can also reduce the outer diameter of the bracket 300, reduce the possibility of interference, and make the structure of the eye-tracking simulation device more compact.

[0113] In some embodiments, such as Figure 5 and Figure 6As shown, multiple gears 330 are provided, and the multiple gears 330 are circumferentially spaced outside the central hole 301. It should be noted that the number and specific distribution of the gears 330 can be designed according to actual needs, and this embodiment does not impose specific limitations on this.

[0114] It is understandable that by simultaneously engaging multiple gears 330 with the internal gear ring 320, transmission efficiency can be improved, load can be shared, and the rotational stability of the internal gear ring 320 can be enhanced. For example, such as... Figure 5 and Figure 6 As shown, an internal gear ring 320 and three gears 330 mesh simultaneously, and the output end of the second drive unit 340 is connected to one of the gears 330.

[0115] In some embodiments, such as Figure 5 and Figure 6 As shown, each bracket 300 includes two coaxial internal gear rings 320 and at least two gears 330. The two internal gear rings 320 correspond to and are connected to the two mounting parts 400 respectively. A portion of the at least two gears 330 meshes with one of the internal gear rings 320, and another portion of the at least two gears 330 meshes with the other internal gear ring 320.

[0116] Understandably, for an optical engine with multiple eye-tracking cameras, each connecting bracket 310 corresponds to two mounting parts 400, namely, for eye-tracking cameras used for capturing images near the cheek and those near the nose, thereby improving the versatility of the eye-tracking simulation device. Simultaneously, since the internal gear ring 320 corresponds one-to-one with the mounting parts 400 and each meshes with a different gear 330, the two mounting parts 400 of the same bracket 300 can be independently adjusted in position, improving detection efficiency and reliability.

[0117] In some embodiments, such as Figure 5 , Figure 6 and Figure 8 As shown, the central hole 301, an annular groove 311, one internal gear ring 320 and another internal gear ring 320 are arranged sequentially outward from the center of the central hole 301. The two internal gear rings 320 are spaced apart along the axial direction of the central hole 301. That is, the diameters of the two internal gear rings 320 in each bracket 300 are different, so as to ensure that the bracket 300 is compact while reducing the possibility of mutual interference.

[0118] In some embodiments, such as Figure 3 As shown, at least one mounting part 400 is provided in the lower part of the partial structure, that is, at least one mounting part 400 is provided in the lower part of the internal gear ring 320, so as to simulate an eye-tracking camera near the nose side, thereby improving the versatility of the eye-tracking simulation device.

[0119] In some embodiments, such as Figures 4 to 8 As shown, at least one camera 422 is constrained to the support 300 in a manner that allows it to move radially along the viewport. That is, the camera 422 is arranged on the support 300 in a manner that allows movement in an extended plane of the viewport, enabling corresponding adjustments to the position of the eye-tracking camera according to different types of optical engines, thereby improving detection efficiency and reliability and reducing detection costs.

[0120] In some embodiments, such as Figures 4 to 8 As shown, the bracket 300 includes a mounting member 410, an adjustment assembly 420, and a third drive member 430. The mounting member 410 is provided with a through groove 414 extending through its thickness direction and a sliding groove 413 extending radially along the viewing window. The adjustment assembly 420 is accommodated in the through groove 414 and slidably connected to the sliding groove 413. The camera 422 is disposed on the adjustment assembly 420. The third drive member 430 is disposed on the mounting member 410, and the output end of the third drive member 430 is drively connected to the adjustment assembly 420.

[0121] It is understood that the through groove 414 passes through the mounting member 410 along the axial direction of the central hole 301, the slide groove 413 extends radially along the central hole 301, the adjusting assembly 420 slides in conjunction with the slide groove 413, the fixed end of the third driving member 430 is disposed on the mounting member 410, and the output end of the third driving member 430 is connected to the adjusting assembly 420 to drive the adjusting assembly 420 to move radially along the central hole 301 to approach or move away from the center of the central hole 301, thereby changing the position of the camera 422 in the radial direction of the viewing window. Exemplarily, the third driving member 430 includes, but is not limited to, an electric lead screw.

[0122] In some embodiments, such as Figures 4 to 8 As shown, the mounting part 400 includes a mounting member 410 and an adjustment assembly 420. The mounting member 410 is disposed on the connecting frame 310. The adjustment assembly 420 is adjustablely disposed on the mounting member 410 along the radial position of the central hole 301. The camera 422 is disposed on the adjustment assembly 420 to change the position of the camera 422 in the radial direction of the viewing window, thereby improving detection efficiency and reliability and reducing detection costs.

[0123] It should be noted that, in some embodiments, the mounting member 410 is adjustablely positioned on the bracket 300 along the circumferential direction of the central hole 301, so as to enable the camera 422 to move relative to the bracket 300 along the circumferential and radial directions of the central hole 301, thereby further improving detection efficiency and reliability.

[0124] For example, such as Figure 8 As shown, in some embodiments, the mounting member 410 forms a groove 411, one end of the mounting member 410 is connected to the internal gear ring 320, and the other end extends radially along the central hole 301 and forms a groove 411.

[0125] In some embodiments, such as Figure 5 and Figure 7 As shown, the mounting part 400 also includes a third driving member 430. The fixed end of the third driving member 430 is disposed on the mounting part 410, and the output end of the third driving member 430 is connected to the adjustment assembly 420 for driving the adjustment assembly 420 to move radially along the central hole 301 to approach or move away from the center of the central hole 301. Exemplarily, the third driving member 430 includes, but is not limited to, an electric lead screw.

[0126] In some embodiments, such as Figure 4 As shown, the mounting component 410 forms a groove 413, which extends radially along the central hole 301, and the adjusting component 420 slides in conjunction with the groove 413. It should be noted that the number and size of the grooves 413 can be designed according to actual needs, and this embodiment does not impose specific limitations on them.

[0127] It is understandable that by setting the slide groove 413, the adjustment component 420 partially slides and engages with the inner wall of the slide groove 413, thereby playing a guiding and limiting role, improving the smoothness and accuracy of the radial movement of the adjustment component 420 along the central hole 301, and improving the reliability of the eye-tracking simulation device.

[0128] In some embodiments, such as Figures 4 to 8 As shown, the mounting member 410 forms a through groove 414 for accommodating at least a portion of the adjusting assembly 420, the through groove 414 extending through the mounting member 410 axially along the central hole 301. It should be noted that the size and shape of the through groove 414 can be designed according to actual needs, and this embodiment does not impose specific limitations on this.

[0129] It is understandable that the through groove 414 penetrates the mounting part 410 along the axial direction of the central hole 301, that is, the through groove 414 penetrates the mounting part 410 along the thickness direction of the mounting part 410. This not only makes the entire mounting part 400 more compact, but also protects the adjustment component 420.

[0130] In some embodiments, such as Figure 7 As shown, the adjustment assembly 420 includes a connector 421, which is adjustablely positioned on the mounting member 410 along the radial direction of the central hole 301. A camera 422 is adjustablely positioned on the connector 421. Specifically, the camera 422 is arranged on the connector 421 in a manner that allows rotation about a rotation axis parallel to an extension plane of the viewing window, in order to accurately simulate the focal length, viewing angle, and shooting direction of different eye-tracking cameras. Exemplarily, the camera 422 may include, but is not limited to, an infrared camera or an image sensor.

[0131] It is understood that the connector 421 is adjustable in position along the radial direction of the central hole 301 on the mounting part 410, that is, the connector 421 is accommodated in the through groove 414 and slidably connected to the slide groove 413, and the camera 422 is adjustable in angle on the connector 421 in order to accurately simulate the focal length, viewing angle and shooting direction of the eye-tracking camera in different optical engines, improve detection efficiency and reliability, and reduce detection costs.

[0132] In some embodiments, the angle between the imaging surface of the camera 422 and the axis of the central hole 301 is adjustable in the range of 15 to 60°, which can meet the detection requirements of different optical engines, reduce detection costs, improve detection efficiency, and also reduce the problem of inaccurate positioning caused by excessive rotation of the camera 422.

[0133] In some embodiments, such as Figure 7 As shown, the adjustment assembly 420 also includes a knob 423 and a connecting shaft. The connecting member 421 is accommodated in the through groove 414 and slidably connected to the slide groove 413. The connecting shaft passes through the connecting member 421 in a direction perpendicular to the radial direction of the viewing window and is connected to the camera 422. The knob 423 is located at one end of the connecting shaft and is situated inside the through groove 414 and outside the connecting member 421. That is, the inspector can manually turn the knob 423 to drive the connecting shaft and the camera 422 to rotate relative to the connecting member 421, thereby making the installation angle of the camera 422 adjustable.

[0134] In other embodiments, the camera 422 moves in a spiral trajectory on the plane of the viewport, similar to the unfolding trajectory of a variable aperture blade. In this case, the driving mechanism of the camera 422 is a gear reduction mechanism, requiring only a spiral guide groove.

[0135] It should be noted that in some embodiments, a transmission gear set may also be provided between the connecting shaft and the camera 422 to further precisely adjust the angle of the camera 422 using the transmission ratio of the transmission gear set, which helps to improve detection accuracy and reliability. The specific structure of the transmission gear set can be designed according to actual needs, and this embodiment does not impose specific limitations on it. For example, the transmission ratio of the transmission gear set is greater than 3.

[0136] In some embodiments, such as Figure 1 and Figure 2 As shown, the eye-tracking simulation device also includes a display, which is spaced 300 from the support in a direction perpendicular to the plane of the viewing window. Of course, in other embodiments, the eye-tracking simulation device can also be used directly in conjunction with an existing external display; this embodiment does not impose specific limitations on this.

[0137] Understandably, the display is used to provide images to simulate the gaze point for an inspector to view. The display screen 210 is spaced apart from the base 100 to allow for adjustment of the distance between them. Of course, in other embodiments, the display screen 210 may also be disposed on the base 100; this embodiment does not specifically limit this. For example, as... Figure 2 As shown, the projector 220 is mounted on the base 100, which not only facilitates operation and maintenance but also allows for direct adjustment of the image size using the projector 220's built-in scaling function. Of course, in other embodiments, the projector 220 can also be placed outside the base 100; this embodiment does not impose specific limitations on this.

[0138] It should be noted that, in some embodiments, the display may be as follows: Figure 1 The display screen 210 shown is used by the controller to send signals to the display screen 210 so that the display screen 210 displays the corresponding image according to the received signals. The display screen 210 includes, but is not limited to, liquid crystal displays (LCDs) or organic light-emitting diode (OLED) displays, etc., and this embodiment does not specifically limit it. In some other embodiments, the display screen may also be as follows: Figure 2 The projector 220 shown projects images onto a white wall or screen.

[0139] In some embodiments, such as Figure 4 As shown, the bracket 300 is also equipped with an infrared light source module, which extends circumferentially along the viewport and is used to provide supplementary lighting for the camera 422.

[0140] It is understandable that the infrared light source module and the bracket 300 are in one-to-one correspondence to provide supplemental lighting for all cameras 422 on the corresponding bracket 300, thereby improving the quality of eye data captured by the camera 422 and improving the reliability of the detection results.

[0141] In some embodiments, such as Figure 4 As shown, the infrared light source module includes a plurality of circumferentially spaced light-emitting elements 610, with the light-emitting elements 610 positioned near the outer edge of the central hole 301. It should be noted that the number and specific distribution of the light-emitting elements 610 can be designed according to actual needs, and this embodiment does not impose specific limitations in this regard. For example, the light-emitting elements 610 include, but are not limited to, LED infrared lights.

[0142] It is understood that the circumferentially spaced light-emitting elements 610 can provide uniform illumination, reduce shadows, and placing the light-emitting elements 610 close to the outer edge of the central hole 301 can optimize the light propagation path, making the light more concentrated and effective, improving illumination efficiency, and ensuring detection accuracy. It should be noted that the center points of multiple light-emitting elements 610 can be on the same circumference or on different circumferences; this embodiment does not impose specific limitations on this.

[0143] In some embodiments, such as Figure 4 As shown, the infrared light source module also includes a substrate. One side of the substrate is attached to the side of the connector 310 away from the display, and the light-emitting element 610 is disposed on the other side of the substrate. Compared with directly mounting the light-emitting element 610 on the connector 310, this reduces assembly steps and manufacturing costs. It should be noted that the shape and size of the substrate can be designed according to actual needs. This embodiment does not impose specific limitations on this. For example, the substrate is annular.

[0144] In some embodiments, such as Figures 1 to 3 As shown, the eye-tracking simulation device also includes a chin rest 700, which and the camera 422 are located on the same side of the support 300.

[0145] It should be noted that in some embodiments, the chin support 700 is spaced apart from the base 100 and located on the side of the base 100 away from the display. Of course, in other embodiments, the chin support 700 may also be directly disposed on the base 100, and this embodiment does not impose specific limitations on this.

[0146] Understandably, using the chin rest 700 to consistently support the inspector's chin during the inspection process ensures the inspector maintains a consistent posture and reduces fatigue during prolonged inspections, thus improving the accuracy and reliability of the inspection data and enhancing the overall experience for the inspector. Of course, in other embodiments, such as... Figure 9 As shown, the eye-tracking simulation device may also be used without the chin support 700, and this embodiment does not impose any specific restrictions on this.

[0147] In some embodiments, such as Figures 1 to 3 As shown, the distance between the chin support 700 and the base 100 is adjustable.

[0148] Understandably, the distance between the chin support 700 and the base 100 along the axial direction of the central hole 301 is adjustable to adjust the distance between the inspector's eyes and the support 300. When comparing corresponding test data between different inspectors, the adjustable distance helps to maintain the consistency of test conditions, make the test data more standardized, and improve the reliability of the test.

[0149] In some embodiments, such as Figure 1 and Figure 3As shown, the chin support 700 includes a mounting block 710, a support rod 720, and a support body 730 connected sequentially from bottom to top. The mounting block 710 forms a guide groove 711 extending along the axial direction of the central hole 301. A guide block 721 is sleeved on the end of the support rod 720 away from the support body 730, and the guide block 721 slides in conjunction with the guide groove 711. The support body 730 forms an arc-shaped groove 731 for supporting the chin. That is, by moving the guide block 721 to different positions in the guide groove 711, the support rod 720 and the support body 730 are moved closer to or further away from the base 100, thus achieving adjustable distance between the chin support 700 and the base 100. Of course, in other embodiments, other methods can also be used to achieve adjustable distance between the chin support 700 and the base 100, and this embodiment does not impose specific limitations on this.

[0150] In some embodiments, the height of the chin rest 700 is adjustable, which helps stabilize the head position of the testing personnel and standardize their testing posture, thereby improving the accuracy of the testing results.

[0151] In some embodiments, the chin support 700 has a vertically arranged telescopic rod to adjust the overall height of the chin support 700. Of course, in other embodiments, such as... Figures 1 to 3 As shown, the height of the chin support 700 can remain constant, and this embodiment does not impose specific limitations on this.

[0152] For example, in some embodiments, the support rod 720 is a telescopic rod to quickly change the position of the bracket body 730 in the height direction. Of course, in other embodiments, other methods can also be used to achieve the positional adjustability of the chin bracket 700, and this embodiment does not impose specific limitations on this.

[0153] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0154] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0155] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0156] In the description of this application, "multiple" means two or more.

[0157] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0158] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0159] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0160] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An eye-tracking simulation device, characterized in that, include: The bracket has a viewing window; The camera is arranged on the bracket in at least one of the following ways: In a manner that allows movement along the extended plane of the viewport; It can rotate about an axis of rotation that is substantially parallel or perpendicular to the extension plane of the window.

2. The eye-tracking simulation device according to claim 1, characterized in that, At least one of the cameras is constrained to the bracket in a manner that allows it to rotate circumferentially about the viewport.

3. The eye-tracking simulation device according to claim 2, characterized in that, The support includes: A connecting frame forms the viewing window, and the connecting frame is provided with an annular groove; The mounting part is slidably connected to the annular groove, and the camera is disposed in the mounting part; The second driving component is disposed on the connecting frame and is connected to the mounting part in a transmission manner.

4. The eye-tracking simulation device according to claim 3, characterized in that, The support also includes: An internal gear ring, wherein the mounting portion is connected to the internal gear ring; A gear is located at the output end of the second drive member, the gear being located inside the internal gear ring and meshing with the internal gear ring.

5. The eye-tracking simulation device according to claim 1, characterized in that, At least one of the cameras is constrained to the bracket in a manner that allows it to move radially along the viewport.

6. The eye-tracking simulation device according to claim 5, characterized in that, The support includes: The mounting component is provided with a through groove extending through its thickness direction and a slide groove extending radially along the viewing window; An adjustment component is accommodated in the through groove and slidably connected to the slide groove, and the camera is disposed on the adjustment component; A third driving component is disposed on the mounting component, and the output end of the third driving component is connected to the adjustment assembly in a transmission manner.

7. The eye-tracking simulation device according to claim 6, characterized in that, The adjustment component includes: A connector is accommodated in the through groove and slidably connected to the slide groove; A connecting shaft passes through the connector in a direction perpendicular to the radial direction of the viewing window, and the connecting shaft is connected to the camera; A knob is located at one end of the connecting shaft, outside the connector and inside the through groove.

8. The eye-tracking simulation device according to claim 1, characterized in that, It also includes a base, and there are two supports, which are spaced laterally on the base.

9. The eye-tracking simulation device according to claim 8, characterized in that, At least one of the supports is constrained to the base in a manner that allows it to move laterally.

10. The eye-tracking simulation device according to claim 1, characterized in that, It also includes a chin rest, which is located on the same side of the bracket as the camera.

11. The eye-tracking simulation device according to claim 10, characterized in that, The chin support has a vertically mounted telescopic rod.

12. The eye-tracking simulation device according to claim 1, characterized in that, The bracket is also equipped with an infrared light source module, which extends circumferentially along the window.

13. The eye-tracking simulation device according to claim 1, characterized in that, It also includes a display, which is spaced apart from the bracket in a direction perpendicular to the plane where the viewing window is located.

14. The eye-tracking simulation device according to any one of claims 1 to 13, characterized in that, The bracket has at least a ring-shaped partial structure, the central hole enclosed by the inner ring side of the partial structure forms the viewing window, and the partial structure is provided with a mounting part located outside the viewing window, and the camera is mounted on the mounting part.

15. The eye-tracking simulation device according to claim 14, characterized in that, At least one of the mounting portions is located at the lower part of the partial structure.

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