An infinite mirror structure for eye-tracking optical imaging

Abstract

This invention relates to the field of optical imaging technology, and more particularly to an infinite mirror structure for eye-tracking optical imaging. It includes a protective housing, an infinite mirror mechanism, and a Y-axis compensation mechanism. The Y-axis compensation mechanism includes a rotating plate, which is fixedly mounted on the rotating shaft of an eye-tracking device. A square airbag is fixedly installed inside the fixed block. This invention uses two surfaces of the infinite mirror medium block as mutual reflection layers to reflect the light strips within the light grooves around the infinite mirror medium block, creating an infinite reflection effect. Because two materials are replaced with one, image ghosting is eliminated, as is the visual discontinuity of the original structure. Simultaneously, the display screen is hidden behind acrylic, so the viewer does not perceive the image on the screen, thus not affecting the viewing experience. Since the refractive index of acrylic differs from that of air, the image depth on the display screen shifts forward when viewed from the front, enhancing the naked-eye 3D visual experience.

Description

Technical Field

[0001] This invention relates to the field of optical imaging technology, and more particularly to an infinite mirror structure for eye-tracking optical imaging. Background Technology

[0002] Holographic projection utilizes the refraction of light and the illusion of light to create the perception of images appearing in mid-air. This technology represents a revolutionary imaging concept for the future, offering 3D imaging without the need for glasses. Holographic projection technology is a popular high-tech technology in recent years. It uses holographic films in conjunction with display screens and image content to showcase products. This novel interactive display technology combines decoration and practicality, remaining completely transparent when there is no image, providing users with a completely new interactive experience, and has become a fashionable product display and marketing tool.

[0003] Patent document CN119105126A discloses an infinity mirror and an infinity mirror light-emitting device. At least one of the first and second reflective elements is a light-transmitting reflector, and light is continuously reflected between the first and second reflective elements, allowing the viewer to see the visual effect of an infinity tunnel when viewing the light-transmitting reflector. An electronic device using the infinity mirror and infinity mirror light-emitting device of this invention can attract the viewer's attention through the visual effect of an infinity tunnel.

[0004] There is a noticeable visual gap between the mirror and the display screen, resulting in an unsatisfactory visual effect. The optical glass and the mirror are two pieces of material with thickness, which causes ghosting when light passes through them, making the naked-eye 3D effect less obvious. Summary of the Invention

[0005] The purpose of this invention is to address the problem in the prior art that ghosting occurs when light passes through, resulting in an unclear naked-eye 3D effect, and to propose an infinite mirror structure for eye-tracking optical imaging.

[0006] The technical solution of the present invention: an infinite mirror structure for eye-tracking optical imaging, comprising a protective housing, a fixing block fixedly connected to the inner wall of the protective housing, and an eye-tracking device rotatably connected to the inner wall of the protective housing via a rotating shaft, and further comprising:

[0007] An infinite mirror mechanism includes an infinite mirror medium block, which is rotatably connected to the inside of a protective shell. The infinite mirror medium block has grooves, and each groove contains a light-emitting LED strip.

[0008] The Y-axis compensation mechanism includes a rotating plate, which is fixedly mounted on the rotating shaft of the eye-tracking device. A square airbag is fixedly mounted inside the fixed block. A pressure plate that is fixedly connected to the square airbag is slidably connected inside the fixed block. A transmission component is provided between the rotating plate and the pressure plate. An adjustment airbag is connected to the side of the square airbag away from the pressure plate. A display screen is fixedly mounted at the end of the adjustment airbag.

[0009] The inner wall of the protective housing is provided with a fluctuation limiting mechanism.

[0010] Optionally, the adjustable airbag is an arc-shaped airbag, and the volume of the adjustable airbag is smaller than that of the square airbag. A support spring is fixedly installed inside the adjustable airbag, and the two ends of the support spring are fixedly connected to the display screen and the protective shell, respectively.

[0011] Optionally, the transmission component includes a column, which is fixedly installed on the side of the rotating plate, and a docking plate is fixedly installed on the side of the pressure plate. A sliding frame is provided inside the docking plate, and the column slides within the sliding frame.

[0012] Optionally, the docking plate has a notch, the rotating shaft of the eye-tracking device is located at the notch, and an airbag hose is fixedly installed on the side of the square airbag away from the pressure plate. The airbag hose extends from the inside of the protective shell to the adjustment airbag.

[0013] Optionally, a support frame is fixedly installed on the outer wall of the display screen, and the side of the infinite mirror medium block is fixedly connected to the display screen.

[0014] Optionally, the fluctuation limiting mechanism includes an outer ring, the inner arc surface of which is provided with a positioning groove, an inner circular plate is fixedly installed on the inner wall of the protective shell, the inner wall of the outer ring is rotatably connected to the inner circular plate, and an arc-shaped spring sheet is fixedly installed on the outer wall of the inner circular plate, the arc-shaped spring sheet being engaged with the positioning groove.

[0015] Optionally, multiple positioning grooves are provided and are distributed at equal angles around the inner circular plate. An avoidance groove is provided on the outer wall of the inner circular plate, and the end of the arc-shaped spring sheet is installed in the avoidance groove of the inner circular plate.

[0016] Optionally, the inner wall of the protective housing is slidably connected with a toothed plate, the outer wall of the outer ring is fixedly installed with a gear, the gear meshes with the toothed plate, a push rod is fixedly installed on the top of the toothed plate, an air cylinder is fixedly installed on the top of the push rod, and a duct facing the infinite mirror medium block is fixedly installed at the end of the air cylinder.

[0017] Optionally, the groove adopts a square-shaped structure, and multiple grooves are provided, which are distributed equidistantly along the infinite mirror medium block in a straight line.

[0018] Optionally, an extension frame is fixedly mounted on the front of the eye-tracking device, and two symmetrically arranged cameras are fixedly mounted on the front of the eye-tracking device and within the extension frame. A motor fixedly connected to the eye-tracking device is fixedly mounted inside the protective housing.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] This invention uses two surfaces of an infinite mirror medium block as mutual reflective layers to reflect the light strips within the light grooves surrounding the medium block, creating an infinite reflection effect. By replacing two materials with a single material, image ghosting and visual breaks in the original structure are eliminated. Simultaneously, the display screen is hidden behind acrylic, so viewers do not perceive the image on the screen. This does not affect the viewing experience. Because acrylic's refractive index differs from air's, the image depth on the display appears to shift forward when viewed from the front, enhancing the naked-eye 3D visual experience.

[0021] Furthermore, by extending the frame to limit the recognition range of the eye-tracking device, it is made to recognize only the X-axis direction. A motor is used to deflect the eye-tracking device to simulate eye recognition on the Y-axis. During the eye-tracking device's recognition of the eyes, the eye-tracking device uses a rotating plate to drive the column to rotate, so that the pressure plate slides and squeezes the gas inside the square airbag into the adjustment airbag, causing it to expand and unfold. The adjustment airbag pushes the display screen to deflect, thereby adjusting the angle of the image on it, reducing production costs and preventing screen tearing caused by tracking multiple people's eyes at the same time.

[0022] Furthermore, through the structural design of multiple positioning slots, the arc-shaped spring sheet and the positioning slots work together to form multiple adjustable positions for the outer ring, avoiding poor connection stability of the positioning slots to the display screen, which would cause fluctuations in the display screen angle and affect the stability of the image on the display screen. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of the present invention is provided;

[0024] Figure 2 This is a schematic diagram of the separated state of the infinite mirror mechanism of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the rear of the protective housing structure of the present invention;

[0026] Figure 4 for Figure 3 Enlarged schematic diagram of the square airbag structure in part A;

[0027] Figure 5 This is a schematic diagram of the support frame structure of the present invention;

[0028] Figure 6 for Figure 5 Enlarged schematic diagram of the outer ring structure of part B;

[0029] Figure 7 This is a schematic diagram of the inner circular plate structure of the present invention.

[0030] Reference numerals: 1. Protective housing; 2. Infinite mirror mechanism; 21. Infinite mirror medium block; 22. Groove; 23. Light strip; 3. Fixing block; 4. Eye-tracking device; 5. Y-axis compensation mechanism; 51. Rotating plate; 52. Column; 53. Docking plate; 54. Sliding frame; 55. Pressure plate; 56. Square airbag; 57. Airbag hose; 58. Adjusting airbag; 59. Display screen; 510. Support frame; 6. Wave limiting mechanism; 61. Gear; 62. Tooth plate; 63. Push rod; 64. Air cylinder; 65. Inner circular plate; 66. Arc-shaped spring plate; 67. Outer ring; 68. Positioning groove. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example 1: This example proposes an infinite mirror structure for eye-tracking optical imaging, such as... Figures 1 to 3 As shown, it includes a protective housing 1, a fixing block 3 is fixedly connected to the inner wall of the protective housing 1, and a motor fixedly installed inside the protective housing 1 and fixedly connected to the eye-tracking device 4.

[0037] Inside the protective housing 1, an eye-tracking device 4 is rotatably connected via a pivot. An extension frame is fixedly installed on the front of the eye-tracking device 4. Two symmetrically arranged cameras are fixedly installed on the front of the eye-tracking device 4 and within the extension frame. The cameras are used to identify and track the human eye.

[0038] like Figure 2 As shown, the protective housing 1 is equipped with an infinite mirror mechanism 2. The infinite mirror mechanism 2 includes an infinite mirror medium block 21, which is rotatably connected to the inside of the protective housing 1. The infinite mirror medium block 21 has grooves 22, and each groove 22 has a light strip 23 fixedly installed in it. The grooves 22 have a U-shaped structure, and there are multiple grooves 22, which are distributed equidistantly along the infinite mirror medium block 21 in a straight line. There is a gap between the top and bottom of the infinite mirror medium block 21 and the protective housing 1, which serves as a clearance space for the rotation of the infinite mirror medium block 21.

[0039] The protective housing 1 is provided with a Y-axis compensation mechanism 5. The Y-axis compensation mechanism 5 includes a display screen 59. A support frame 510 is fixedly installed on the outer wall of the display screen 59. The support frame 510 is rotatably connected to the protective housing 1 through a rotating shaft.

[0040] The infinity mirror medium block 21, made of thick, high-transparency acrylic, is used to set the display screen 59 behind it. The infinity mirror medium block 21 replaces two pieces of optical glass to form an infinity mirror. The two surfaces of the infinity mirror medium block 21 act as mutual reflection layers, reflecting the light strips 23 within the light grooves around the block, creating an infinity reflection effect. By replacing two materials with one, image ghosting is eliminated, as is the visual discontinuity of the original structure. Simultaneously, since the display screen is hidden behind the acrylic, the viewer does not perceive the image on the screen, thus not affecting the viewing experience. Because the refractive index of acrylic differs from that of air, the image depth on the display appears to shift forward when viewed from the front, enhancing the naked-eye 3D visual experience.

[0041] An eye-tracking device 4 is used to capture images of the viewer's eyes and / or head. This device provides the captured images to a holographic image processing platform. The holographic image processing platform calculates the viewer's gaze direction and head position using eye-tracking and / or head-tracking algorithms. Based on this information, the platform synchronously adjusts the visual angle of the displayed image and displays it on the display screen 59 in real time, ensuring that the image angle always matches the viewer's viewing angle and that the viewer always observes the image angle with correct perspective.

[0042] Furthermore, by combining the visual effects of levitation imaging, the best naked-eye 3D levitation imaging visual effect is achieved. The eye-tracking device 4 is based on a video-driven eye-tracking core with multiple cameras and infrared illuminators. These can capture a series of facial and eye images. After receiving the image information from the eye-tracking device, the holographic processing platform first performs face detection. The face detection method is the cascaded classifier integrated in OpenCV. Multiple weak classification models are trained using Haar features or LBP features to form the final classifier for face detection. OpenCV provides existing algorithm models. The algorithm of the eye-tracking device 4 in this invention is as follows: After obtaining the entire face image, the Region of Interest (ROI) images of the left and right eye areas are extracted. The size and position of the left and right eye areas are approximately fixed. The length and width of the images collected by the eye-tracking device 4 are... h I The length and width of the eye area are h E Then we have:

[0043]

[0044]

[0045] For the top left corner pixel position of the left and right eye ROI images:

[0046]

[0047]

[0048]

[0049] Where, x L ,y L The x-coordinate represents the position coordinates of the top-left pixel in the left eye ROI image. R ,y R This represents the pixel coordinates of the top-left corner of the right eye ROI image. By calculating this formula on a face detection image, the approximate location of the eye in the image can be determined, allowing for the extraction of the specific image of the eye.

[0050] The eye-tracking software uses image processing algorithms to identify two key locations in the eye image extracted by the above algorithms—the pupil center and the corneal reflection center. When the eyes rotate, the position of the pupil center on the eye-tracking device 4 changes, but when the head is stable, the position of the corneal reflection CR is fixed relative to the camera sensor.

[0051] If the eyes are completely fixed in space and simply rotate around their own center, the gaze position can be determined simply by tracking changes in the pupil center on the camera sensor. Head tracking is mainly achieved through scene depth information acquisition and 2D facial tracking and positioning. Scene depth information acquisition primarily employs the most common method in passive ranging sensing: binocular stereo vision. This method uses two cameras at a certain distance on an eye-tracking device 4 to simultaneously acquire two images of the same scene. A stereo matching algorithm is used to find corresponding pixels in the two images, and then the time difference information is calculated based on triangulation principles. The parallax information, after conversion, can be used to characterize the depth information of objects in the scene. Additionally, based on the stereo matching algorithm, a depth image of the scene can also be obtained by capturing a set of images of the same scene from different angles. Furthermore, scene depth information can also be indirectly estimated by analyzing features such as luminance and brightness characteristics of the images.

[0052] After obtaining the scene depth image, the spatial position of the viewer's head within the scene is determined. Combining the head position and the eye's viewing position, the viewer's viewing angle can be calculated, allowing the holographic processing platform to adjust the display angle of the 3D image. This ensures the viewer sees an image with correct perspective. Scene depth information can also be acquired using structured light measurement technology. Structured light is light with specific patterns, such as points, lines, and surfaces. The principle of depth image acquisition based on structured light is as follows: structured light is projected onto the scene, and an image sensor captures the corresponding pattern containing the structured light. Since the pattern of structured light is deformed by the shape of objects, the depth information of each point in the scene can be calculated using triangulation principles by analyzing the position of the pattern image in the captured image and the degree of deformation.

[0053] In practical applications, the Kinect depth imaging motion sensing device can be used to process and image the data detected by the eye-tracking device 4. Kinect has three lenses: a camera that acquires RGB color images, and infrared emitters and infrared CMOS cameras on the left and right sides, respectively. These two lenses together constitute Kinect's depth sensing device, with their projection and receiving areas overlapping. Kinect employs a technology called Light Coding, which differs from traditional structured light methods that project a two-dimensional pattern. Kinect's light-coding infrared emitter emits a "stereo code" with three-dimensional depth. The light source for light coding is called laser speckle, which is formed by laser light illuminating a rough object or penetrating frosted glass to produce random diffraction spots. Laser speckle has a high degree of three-dimensional spatial randomness. After a light source calibration is completed, the speckle pattern of the entire space is recorded. Therefore, when an object is placed in this space, only the speckle pattern on the object's surface needs to be known to determine the object's location, thus obtaining a depth image of the scene.

[0054] The eye-tracking device 4 tracks the viewer's eyes and / or head information. After the eye-tracking algorithm and head-tracking algorithm of the holographic image processing platform are used to calculate, the angle of the displayed content is adjusted. The corresponding display angle of the holographic image is calculated by the algorithm and displayed in real time.

[0055] In this embodiment, the two surfaces of the infinite mirror medium block 21 serve as mutual reflective layers, reflecting the light strips 23 within the light grooves surrounding the infinite mirror medium block 21, creating an infinite reflection effect. Since two materials are replaced with a single material, image ghosting is eliminated, as is the visual discontinuity of the original structure. Simultaneously, the display screen is hidden behind the acrylic, so viewers do not perceive the image on the screen. This does not affect the viewing experience. Because the refractive index of acrylic differs from that of air, the image depth on the display screen shifts forward when viewed from the front, enhancing the naked-eye 3D visual experience.

[0056] Example 2, based on Example 1, proposes an infinite mirror structure for eye-tracking optical imaging, such as... Figure 3 and Figure 4 As shown, the extended frame on the front side of the eye-tracking device 4 limits the eye-tracking range of the eye-tracking device 4, making the recognition range of the eye-tracking device 4 a square shape. Since the cost of the device for dual-axis recognition and tracking of the human eye is high and the computational load for calculating and adjusting 3D imaging is large, there is a risk of jamming.

[0057] Dual-axis tracking requires a more precise sensor array and a real-time 3D coordinate transformation algorithm, significantly increasing hardware redundancy and computational load. X-axis and Y-axis tracking can be used normally when a single person stands in front of the eye-tracking device 4, but when using the X-axis + Y-axis dual-axis eye-tracking device in a multi-person scenario, its recognition range is large, and the recognition effect is affected by factors such as interference from multiple people, tracking priority, and computational load.

[0058] The "tracking conflict" triggered by multiple people simultaneously requires real-time capture of the three-dimensional coordinates of a single user's eyeball (horizontal + vertical). When multiple people appear within the tracking range at the same time, it is difficult to distinguish between "effective users" and "interferencers".

[0059] Dual-axis tracking relies on eye features such as pupil position, iris texture, and facial contours to lock onto a target. However, when multiple people are present at the same time, the sensor may mix multiple sets of eye data. For example, user A's X-axis data may be mismatched with user B's Y-axis data, resulting in the generation of incorrect "mixed view coordinates".

[0060] Adjusting the angle of 3D projection can cause chaotic jumps, such as the image suddenly switching from a level view (A) to a top-down view (B), or even multiple incorrect perspectives being superimposed simultaneously, resulting in blurry images, ghosting, or perspective distortion. Therefore, an extended frame is used to limit the recognition range of the eye-tracking device 4.

[0061] like Figure 3 and Figure 4As shown, the Y-axis compensation mechanism 5 also includes a rotating plate 51, which is fixedly mounted on the rotating shaft of the eye-tracking device 4. A motor fixedly connected to the eye-tracking device 4 is fixedly installed inside the protective housing 1. Initially, the eye-tracking device 4 is tilted upwards, and the motor drives the eye-tracking device 4 to rotate. During the rotation of the eye-tracking device 4, the eye-tracking device 4 searches for the human eye until the eye-tracking device 4 tracks the human eye, thereby stopping the motor from rotating.

[0062] A square airbag 56 is fixedly installed inside the fixed block 3. A pressure plate 55, which is fixedly connected to the square airbag 56, is slidably connected inside the fixed block 3. A transmission component is provided between the rotating plate 51 and the pressure plate 55. The transmission component includes a column 52, which is fixedly installed on the side of the rotating plate 51. A docking plate 53 is fixedly installed on the side of the pressure plate 55. A sliding frame 54 is provided inside the docking plate 53, and the column 52 slides within the sliding frame 54.

[0063] like Figure 5 As shown, the eye-tracking device 4 rotates, causing the rotating plate 51 to rotate. The rotating plate 51 uses the column 52 to push the docking plate 53, which in turn moves the pressure plate 55 and squeezes the square airbag 56. An airbag hose 57 is fixedly installed on the side of the square airbag 56 away from the pressure plate 55. An adjustment airbag 58 is connected to the side of the square airbag 56 away from the pressure plate 55. A display screen 59 is fixedly installed at the end of the adjustment airbag 58.

[0064] The docking plate 53 has a notch, and the rotating shaft of the eye-tracking device 4 is located at the notch to prevent the docking plate 53 from being stuck by the rotating shaft.

[0065] The adjustment airbag 58 is an arc-shaped airbag. The volume of the adjustment airbag 58 is smaller than that of the square airbag 56. A support spring is fixedly installed inside the adjustment airbag 58. The two ends of the support spring are fixedly connected to the display screen 59 and the protective housing 1, respectively. The support spring is used to reset the adjustment airbag 58. The gas in the square airbag 56 enters the interior of the adjustment airbag 58, causing it to expand and unfold. The adjustment airbag 58 pushes the display screen 59 to deflect it, thereby adjusting the angle of the image on it.

[0066] A support frame 510 is fixedly installed on the outer wall of the display screen 59. The infinity mirror medium block 21 is located on the front side of the display screen 59, and the side of the infinity mirror medium block 21 is fixedly connected to the display screen 59.

[0067] In this embodiment, the recognition range of the eye-tracking device 4 is limited by the extension frame, so that it only recognizes in the X-axis direction. The motor is used to deflect the eye-tracking device 4 to simulate eye recognition in the Y-axis. During the process of the eye-tracking device 4 recognizing the eyes, the eye-tracking device 4 uses the rotating plate 51 to drive the column 52 to rotate, so that the pressure plate 55 slides and squeezes the gas inside the square airbag 56 into the interior of the adjusting airbag 58, causing it to expand and unfold. The adjusting airbag 58 pushes the display screen 59 to deflect it, thereby adjusting the angle of the image on it, reducing production costs, and preventing screen tearing caused by tracking multiple people's eyes at the same time.

[0068] Example 3: Based on Example 1 or Example 2 above, this example proposes an infinite mirror structure for eye-tracking optical imaging, such as... Figure 6 and Figure 7 As shown, the inner wall of the protective housing 1 is provided with a wave limiting mechanism 6. The wave limiting mechanism 6 includes an outer ring 67. The inner arc surface of the outer ring 67 is provided with a positioning groove 68. An inner circular plate 65 is fixedly installed on the inner wall of the protective housing 1. The inner wall of the outer ring 67 is rotatably connected to the inner circular plate 65. An arc-shaped spring plate 66 is fixedly installed on the outer wall of the inner circular plate 65. The arc-shaped spring plate 66 is engaged with the positioning groove 68.

[0069] The curved spring sheet 66 engages with the positioning groove 68 to prevent fluctuations in the angle of the display screen 59. Multiple positioning grooves 68 are provided and are evenly distributed around the inner circular plate 65. A clearance groove is provided on the outer wall of the inner circular plate 65, and the end of the curved spring sheet 66 is installed within the clearance groove of the inner circular plate 65. Multiple positioning grooves 68 are used to position the angle of the display screen 59.

[0070] A toothed plate 62 is slidably connected to the inner wall of the protective shell 1, and a gear 61 is fixedly installed on the outer wall of the outer ring 67. The gear 61 meshes with the toothed plate 62. A push rod 63 is fixedly installed on the top of the toothed plate 62, and an air cylinder 64 is fixedly installed on the top of the push rod 63. An air duct facing the infinite mirror medium block 21 is fixedly installed at the end of the air cylinder 64. When the gear 61 drives the toothed plate 62 to move upward, the toothed plate 62, the push rod 63 and the air cylinder 64 cooperate, so that the gas inside the air cylinder 64 is sprayed out from the air duct. The air duct is used to blow air to clean the dust that is electrostatically attached to the surface of the infinite mirror medium block 21.

[0071] In this embodiment, through the structural arrangement of multiple positioning slots 68, the arc-shaped spring sheet 66 and the positioning slots 68 cooperate to form multiple adjustable positions for the outer ring 67, so as to avoid poor connection stability of the positioning slots 68 to the display screen 59, which would cause fluctuations in the angle of the display screen 59 and affect the stability of the image on the display screen 59.

[0072] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An infinite mirror structure for eye-tracking optical imaging, characterized in that, The device includes a protective housing (1), with a fixing block (3) fixedly connected to the inner wall of the protective housing (1), and an eye-tracking device (4) rotatably connected to the inner wall of the protective housing (1) via a rotating shaft. It also includes: The infinite mirror mechanism (2) includes an infinite mirror medium block (21), which is rotatably connected to the inside of the protective shell (1). The infinite mirror medium block (21) has a groove (22) on it, and a light-emitting light strip (23) is fixedly installed in each groove (22). The Y-axis compensation mechanism (5) includes a rotating plate (51), which is fixedly installed on the rotating shaft of the eye-tracking device (4). A square airbag (56) is fixedly installed inside the fixing block (3). A pressure plate (55) is slidably connected inside the fixing block (3) and fixedly connected to the square airbag (56). A transmission component is provided between the rotating plate (51) and the pressure plate (55). An adjustment airbag (58) is connected to the side of the square airbag (56) away from the pressure plate (55). A display screen (59) is fixedly installed at the end of the adjustment airbag (58). The inner wall of the protective housing (1) is provided with a wave limiting mechanism (6).

2. The infinite mirror structure for eye-tracking optical imaging according to claim 1, characterized in that: The regulating airbag (58) is an arc-shaped airbag. The volume of the regulating airbag (58) is smaller than that of the square airbag (56). A support spring is fixedly installed inside the regulating airbag (58). The two ends of the support spring are fixedly connected to the display screen (59) and the protective shell (1) respectively.

3. The infinite mirror structure for eye-tracking optical imaging according to claim 2, characterized in that: The transmission component includes a column (52), which is fixedly installed on the side of the rotating plate (51). A docking plate (53) is fixedly installed on the side of the pressure plate (55). A sliding frame (54) is provided inside the docking plate (53), and the column (52) slides within the sliding frame (54).

4. The infinite mirror structure for eye-tracking optical imaging according to claim 3, characterized in that: The docking plate (53) has a notch, the pivot of the eye tracking device (4) is located at the notch, and the square airbag (56) is fixedly installed with an airbag hose (57) on the side away from the pressure plate (55). The airbag hose (57) extends from the inside of the protective shell (1) to the adjustment airbag (58).

5. The infinite mirror structure for eye-tracking optical imaging according to claim 4, characterized in that: A support frame (510) is fixedly installed on the outer wall of the display screen (59), and the side of the infinite mirror medium block (21) is fixedly connected to the display screen (59).

6. The infinite mirror structure for eye-tracking optical imaging according to claim 5, characterized in that: The fluctuation limiting mechanism (6) includes an outer ring (67), the inner arc surface of the outer ring (67) is provided with a positioning groove (68), the inner wall of the protective shell (1) is fixedly installed with an inner circular plate (65), the inner wall of the outer ring (67) is rotatably connected with the inner circular plate (65), the outer wall of the inner circular plate (65) is fixedly installed with an arc-shaped spring sheet (66), and the arc-shaped spring sheet (66) is engaged with the positioning groove (68).

7. The infinite mirror structure for eye-tracking optical imaging according to claim 6, characterized in that: The positioning groove (68) is provided in multiple ways and is distributed at equal angles around the inner circular plate (65). The outer wall of the inner circular plate (65) is provided with a clearance groove, and the end of the arc-shaped spring sheet (66) is installed in the clearance groove of the inner circular plate (65).

8. The infinite mirror structure for eye-tracking optical imaging according to claim 7, characterized in that: The inner wall of the protective housing (1) is slidably connected with a toothed plate (62), and the outer wall of the outer ring (67) is fixedly installed with a gear (61). The gear (61) meshes with the toothed plate (62). A push rod (63) is fixedly installed on the top of the toothed plate (62), and an air cylinder (64) is fixedly installed on the top of the push rod (63). A duct facing the infinite mirror medium block (21) is fixedly installed at the end of the air cylinder (64).

9. The infinite mirror structure for eye-tracking optical imaging according to claim 8, characterized in that: The groove (22) adopts a square-shaped structure, and multiple grooves (22) are provided and are distributed in a straight line at equal intervals along the infinite mirror medium block (21).

10. The infinite mirror structure for eye-tracking optical imaging according to claim 1, characterized in that: An extension frame is fixedly installed on the front of the eye-tracking device (4). Two cameras are symmetrically arranged on the front of the eye-tracking device (4) and located inside the extension frame. A motor that is fixedly connected to the eye-tracking device (4) is fixedly installed inside the protective housing (1).

Images