Vision detection device

Abstract

The invention relates to the technical field of vision detection equipment, in particular to a vision detection device. The internal projection device comprises a display assembly used for projecting a visual chart, an imaging support movably connected with the display assembly, an internal projection base arranged below the imaging support and used for being matched with the display assembly, a driving assembly used for changing the projection angle of the display assembly and a connecting rod assembly. And the imaging bracket is internally and movably connected with a rotary reflector assembly which is matched with the inner projection base and is used for changing a projection light path of the display assembly. The method has the advantages that the problem that the visual function detection equipment is difficult to efficiently switch the detection state in the same scene is solved, and the flexibility of the detection equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vision detection equipment, and in particular to a vision detection device. Background Art

[0002] Vision testing is a core component of basic ophthalmology screening and is typically divided into two separate tests: distance vision and near vision. Distance vision testing assesses the eye's ability to resolve distant objects while relaxed (with the ciliary muscle paralyzed). It is primarily used to screen for refractive errors such as myopia, hyperopia, and astigmatism. Its standardized testing distance is 5 meters. Near vision testing assesses the eye's ability to focus at close range while accommodated (with the ciliary muscle contracted). The testing distance is typically 33 cm. It can diagnose presbyopia, accommodative spasm, and accommodative compensation in hyperopia.

[0003] Related technologies include traditional static devices and digital testing systems. Traditional static devices primarily use a paper eye chart with manual instructions, with the doctor manually switching between charts for different distances (5-meter chart for far vision and 33-cm chart for near vision). Digital testing systems primarily utilize electronic displays and algorithmic control, using LCD screens to dynamically generate visual targets and receiving feedback via infrared remote control or gesture recognition. Digital testing systems can also utilize virtual reality (VR) systems, using head-mounted devices to simulate visual targets at different distances.

[0004] Regarding the aforementioned technologies, traditional static equipment is cumbersome to operate and susceptible to human interference. Digital detection systems require electronic displays with a fixed detection distance and cannot be dynamically adjusted. While VR systems can achieve scene switching, they rely on complex optical distortion correction algorithms and are expensive. Summary of the Invention

[0005] In order to improve the problem that visual function testing equipment is difficult to efficiently switch detection states in the same scenario and to improve the flexibility of the testing equipment, the present application provides a vision testing device.

[0006] The vision detection device provided in this application adopts the following technical solution: A vision testing device includes a display assembly for projecting a vision chart, an imaging bracket to which the display assembly is movably connected, an internal projection base disposed below the imaging bracket and adapted to cooperate with the display assembly, a drive assembly and a connecting rod assembly for changing the projection angle of the display assembly; The imaging bracket is movably connected internally with a rotating reflector assembly for cooperating with the internal projection base and for changing the projection light path of the display assembly.

[0007] By employing this technical solution, dynamic adjustment of the optical path through refraction and reflection eliminates the need to physically move the eye chart or device, reducing the device's size and adapting to confined environments. The mechanical structure ensures precise angle adjustment, avoiding the distortion of the sight mark caused by manual calibration errors associated with traditional mirror-based reflection, and improving the reliability of the results. A single device covers both near and far vision testing, reducing equipment procurement costs while also supporting dynamic adjustment of sight mark size and orientation to meet the screening needs of different populations (such as children and presbyopic patients). The mechanical linkage between the drive assembly and the reflector simplifies the VR system's optical calibration process, which relies on complex algorithms, and reduces maintenance. The drive assembly and linkage assembly coordinate to adjust the projection angle of the display assembly. Combined with the rotating reflector assembly, the optical path is dynamically altered, enabling rapid switching between near and far vision testing modes (e.g., switching between an equivalent distance of 5 meters and a close distance of 33 cm with one click), improving the efficiency issues inherent in traditional devices due to the fixed detection distance.

[0008] Furthermore, the internal projection base includes an optical path bracket, a convex lens, a concave lens, a first bottom reflector and a second bottom reflector. The convex lens is fixedly connected to the top side of the optical path bracket in the horizontal direction, and the concave lens is fixedly connected to the optical path bracket in the vertical direction and is located below the convex lens. The first bottom reflector and the second bottom reflector are respectively arranged obliquely on the front and back sides of the concave lens. The first bottom reflector is located below the convex lens. The angle between the first bottom reflector and the concave lens is -45°, and the angle between the second bottom reflector and the concave lens is 45°.

[0009] By employing this technical solution, a combination of convex and concave lenses adjusts light convergence and divergence. Combined with reflectors tilted at ±45°, this method redirects the light path through reflection, simulating detection distances (such as the 5 meters and 33 centimeters required for far and near vision testing) without the need to physically replace an eye chart or adjust the device's position. Leveraging the synergy of lenses and reflectors, the projection light path is dynamically adjusted within the same device, enabling rapid switching between far and near vision testing modes. This eliminates the tedious manual replacement required with traditional equipment and improves detection efficiency.

[0010] Furthermore, the light path bracket is provided with a shading plate at the middle position for blocking the concave lens, and the shading plate is provided with a first light path channel cooperating with the first bottom reflector and a second light path channel cooperating with the second bottom reflector on both sides.

[0011] By adopting the above technical solution, the shading plate blocks the concave lens, and the first and second optical path channels on both sides allow light to pass through. Combined with the ±45° reflector, the light can only propagate along the preset optical path, blocking the light in the non-channel area of ​​the concave lens, reducing the impact of stray light on the detection optical path, ensuring the clarity of the sight mark projection and the accuracy of the detection results, and optimizing the stability of the optical system.

[0012] Furthermore, the display assembly includes a display screen, a screen fixing frame for fixing the display screen, and a screen rotation axis arranged along the length direction of the display screen and fixedly connected to the screen fixing frame, and the screen rotation axis is rotatably connected to the two opposite inner walls of the imaging bracket.

[0013] By adopting this technical solution, the pivoting connection between the screen's rotation axis and the imaging bracket allows the display to rotate lengthwise. This, combined with the drive assembly and connecting rod assembly, precisely adjusts the sight mark projection angle to meet the optical path requirements of different inspection scenarios. After the display rotates, the projected sight mark light works in conjunction with the reflector and lens of the internal projection base to simulate different inspection distances by changing the optical path. The rigid connection between the screen mount and the rotation axis ensures precise positioning of the display during rotation, avoiding errors caused by manual adjustment. This also facilitates automated control of the drive assembly, improving the efficiency and stability of the inspection process and reducing human interference.

[0014] Furthermore, the rotating mirror assembly includes a top reflector, a rotating bracket for fixing the top reflector, and a mirror rotating shaft arranged along the length direction of the top reflector and fixedly connected to the rotating bracket, and the mirror rotating shaft is rotatably connected to the two opposite inner walls of the imaging bracket.

[0015] By adopting the above technical solution, the top reflector can be rotated along the length direction through the rotating axis, dynamically changing the light path of the sight mark projected by the display component. In conjunction with the lens and reflector of the internal projection base, it can accurately simulate the different light path distances required for far vision and near vision testing without the need to physically replace the sight mark or adjust the equipment position.

[0016] Furthermore, the optical path bracket includes a bottom support plate, support angle irons vertically arranged and dispersed at the corner positions of the bottom support plate, a lens fixing plate arranged in the horizontal direction and fixedly connected to the top of each support angle iron for mounting the convex lens, a bottom lens seat for mounting the concave lens, a first tripod for mounting the first bottom reflector, and a second tripod for mounting the second bottom reflector. The lens fixing plate is provided with an upper optical path channel on one side that cooperates with the display screen and allows the light path to pass through.

[0017] By adopting this technical solution, the bottom support plate and supporting angle irons together form a stable frame, ensuring the installation position accuracy of the convex lens, concave lens, and reflector, and preventing optical path deviation caused by structural shaking. The first and second tripods are used to fix the reflector. The triangular structure rigidly supports the ±45° tilt angle, preventing the reflector from shifting during optical path switching, ensuring the stability and repeatability of the optical path for far / near vision testing. The lens fixing plate and bottom lens mount allow the convex and concave lenses to be independently disassembled, assembled, and replaced, reducing equipment maintenance costs. The decentralized structure facilitates the installation and commissioning of optical components and improves production assembly efficiency.

[0018] Furthermore, the driving assembly includes a motor, a motor screw and a screw stud, and the lens fixing plate is provided with a motor fixing plate and a motor rotating plate on the lower side for installing the motor, the motor fixing plate is fixedly connected to the motor, the motor rotating plate is fixedly connected to the lens fixing plate, and the motor rotating plate is movably connected to the motor fixing plate.

[0019] By adopting the above technical solution, the motor drives the screw stud to move linearly, accurately adjusting the vertical or horizontal position of the lens fixing plate (and convex lens), thereby changing the optical path distance between the convex lens and the concave lens and the reflector, and realizing dynamic fine-tuning of the focal length and optical path angle (such as simulating different object distances for far / near vision testing).

[0020] Furthermore, the lens fixing plate is provided with a screw through hole on one side for the motor screw to pass through, the screw stud is threadedly engaged with the motor screw, and the rotating bracket is provided with a stud fixing seat for fixing the screw stud.

[0021] By adopting the above technical solution, the motor drives the screen's rotation axis through a screw stud, causing the display screen to rotate along its length, thereby adjusting the pitch or horizontal angle and precisely changing the projection direction of the sight mark. During near vision testing, the screen projects vertically, while during far vision testing, the projection angle is adjusted by rotation. Combined with the fixed optical path of the internal projection base, 5m distance simulation is achieved, eliminating the need for manual handling of the equipment. The screw drive can synchronously control the mirror's rotation axis, driving the top reflector to rotate and changing the light path projected by the display component. After the top reflector rotates, the light is reflected by the ±45° reflector fixed to the internal projection base, achieving optical path switching between 5m and 33cm detection distances without the need for manual adjustment of the mirror angle. The motor controls the rotation angle of the screen and top reflector with one click, coordinating with the optical components fixed to the internal projection base to quickly complete the switching between far / near vision testing states. Compared with the traditional manual replacement of the eye chart, the testing process is shortened.

[0022] Furthermore, the connecting rod assembly is arranged on a side of the rotating bracket away from the stud fixing seat, and the connecting rod assembly includes a mirror rocker and a mirror connecting rod. The mirror rocker is fixedly connected to the side of the screen fixing bracket away from the driving assembly, and the rotating bracket is integrally connected with a hinge seat for rotatably connecting the mirror connecting rod at an edge position away from the side of the mirror rotation axis, and the mirror connecting rod is rotatably connected to the mirror rocker at one end away from the connection with the hinge seat.

[0023] With this technical solution, the mirror rocker is fixed to the screen mount and connected to the hinged base of the rotating bracket via a mirror linkage. This allows the top mirror to rotate synchronously with the display (pitch adjustment). The linkage uses the lever principle to drive the mirror to the corresponding angle, ensuring that the projected light, after being reflected by the mirror, remains along the predetermined optical path (e.g., the 5-meter vision test path), preventing deviation in the projection of the sight mark due to asynchronous movement.

[0024] Furthermore, the imaging bracket includes two side fixing frames vertically fixedly connected to the upper side of the lens fixing plate and symmetrically arranged on both sides, a rear cover plate vertically fixedly connected to the lens fixing plate and located between the two side fixing frames, and a dustproof plate arranged between the two side fixing frames and located on the upper side.

[0025] By adopting the above technical solution, the side fixing frames are fixed vertically to the lens fixing plate, forming a symmetrical support structure. This ensures the installation accuracy of the display screen rotation axis and the reflector rotation axis, and avoids optical path deviation caused by structural deformation. When the screen rotates, the rigid support of the side fixing frames prevents the rotation axis from tilting, ensuring the stability of the projection direction of the sight mark. The rear cover is located between the two fixing frames, enhancing the structural integrity and reducing vibration transmission during equipment operation. During the motor-driven screw transmission process, the rear cover can absorb mechanical vibration energy, reduce interference with optical components, and improve optical path stability. The top dust plate covers the space between the side fixing frames, blocking dust and other foreign matter from entering the imaging area, preventing contaminants from adhering to the reflector or display surface and affecting the clarity of the sight mark.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the coordinated operation of the display assembly's rotation axis, rotating mirror assembly, and drive linkage, one-touch switching of the optical path for far / near vision detection is achieved. The display screen can be rotated along its length to adjust the projection angle. The top mirror rotates in conjunction with the screen via a linkage. Combined with the ±45° tilted mirror and lens assembly in the internal projection base, it simulates a detection distance of 5 meters for far vision and 33 cm for near vision. There's no need to manually change the eye chart or adjust the equipment position, and the detection process is over 50% shorter than with traditional equipment. Furthermore, the shading plate and optical path design prevent optical interference, improving detection efficiency and automation. 2. Utilizing a modular optical structure and mechanical transmission, the internal projection base integrates convex and concave lenses and reflectors, replacing the physical distance adjustment of traditional equipment with optical refraction and reflection, reducing the device size and adapting to limited space scenarios. The drive assembly uses a motor screw drive coupled with a connecting rod mechanism, replacing the complex algorithms and high-cost hardware of VR systems. At the same time, a rigid structure such as a tripod and supporting angle irons ensures the installation accuracy of optical components and reduces the difficulty of maintenance and debugging. 3. The symmetrical side mounts of the imaging bracket and the rear cover form a rigid frame, minimizing coaxiality errors between the display and the reflector's rotation axis. A dust shield protects against dust and foreign matter, maintaining a clean optical path. A light shield blocks light that is not channeled by the concave lens, reducing stray light interference and enhancing the clarity of the projected sight mark. The zero-delay mechanical linkage transmission prevents sight mark distortion caused by manual calibration errors. Combined with dynamic fine-tuning of the lens assembly's focus, this ensures the reliability and repeatability of near and far vision test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a vision detection device according to an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the overall structure of the vision detection device in the near vision detection mode of an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the overall structure of the vision detection device of an embodiment of the present application in the far vision detection mode.

[0030] Figure 4 It is a schematic diagram of the partial structure of the drive component in the embodiment of the present application.

[0031] Figure 5 yes Figure 3 A schematic diagram of the structure of the screw stud and stud fixing seat in part A.

[0032] Figure 6 yes Figure 3 An enlarged schematic diagram of the structure of the mirror connecting rod and hinge seat in part B.

[0033] Figure 7 This is a schematic diagram of the optical path of the vision detection device in the embodiment of the present application in the far vision detection mode.

[0034] Figure 8 This is a schematic diagram of the optical path of the vision detection device in the near vision detection mode according to an embodiment of the present application.

[0035] Explanation of reference numerals: 1. Display assembly; 11. Display screen; 12. Screen fixing bracket; 13. Screen rotation axis; 2. Imaging bracket; 21. Side fixing bracket; 22. Rear cover; 23. Dustproof plate; 24. Rotating reflector assembly; 241. Top reflector; 242. Rotating bracket; 2421. Stud fixing seat; 2422. Articulated seat; 243. Mirror rotation axis; 3. Inner projection base; 31. Optical path bracket; 311. Bottom support plate; 312. Support angle iron; 313. Lens fixing plate; 3131. Upper optical path Channel; 3132, screw rod through hole; 314, bottom lens holder; 315, first tripod; 316, second tripod; 317, light shielding plate; 3171, first light path channel; 3172, second light path channel; 32, convex lens; 33, concave lens; 34, first bottom reflector; 35, second bottom reflector; 4, drive assembly; 41, motor; 42, motor screw; 43, screw rod stud; 44, motor fixing plate; 45, motor rotating plate; 5, connecting rod assembly; 51, mirror rocker; 52, mirror connecting rod. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-8 And embodiments, the present application is further described in detail.

[0037] The embodiment of the present application discloses a vision detection device. Figure 1 The vision testing device includes a display assembly 1, an imaging bracket 2, an internal projection base 3, a drive assembly 4, and a connecting rod assembly 5. The display assembly 1 is used to project the eye chart, the imaging bracket 2 is movably connected to the display assembly 1, the internal projection base 3 is located below the imaging bracket 2 and cooperates with the display assembly 1, and the drive assembly 4 and connecting rod assembly 5 are used to change the projection angle of the display assembly 1.

[0038] Reference Figure 2 and Figure 3 The display assembly 1 is mounted within the imaging bracket 2, which is mounted on the top side of the internal projection base 3. The imaging bracket 2 includes two side fixing frames 21 vertically fixedly connected to the upper side of the internal projection base 3 and symmetrically arranged on both sides, a rear cover 22 vertically fixedly connected to the internal projection base 3 and located between the two fixing frames 21, and a dustproof plate 23 located between the two fixing frames 21 and located on the upper side.

[0039] The internal projection base 3 includes an optical path support 31, a convex lens 32, a concave lens 33, a first bottom reflector 34, and a second bottom reflector 35. The optical path support 31 includes a bottom support plate 311, support angle irons 312 arranged vertically and dispersed at the corners of the bottom support plate 311, a lens fixing plate 313 arranged horizontally and fixedly connected to the top of each support angle iron 312 for mounting the convex lens 32, a bottom lens holder 314 for mounting the concave lens 33, a first tripod 315 for mounting the first bottom reflector 34, a second tripod 316 for mounting the second bottom reflector 35, and a light shielding plate 317 located in the middle of the optical path support 31 to block the concave lens 33. The light shielding plate 317 defines a first optical channel 3171 on both sides thereof for cooperating with the first bottom reflector 34 and a second optical channel 3172 on the second bottom reflector 35 . The first tripod 315 and the second tripod 316 are symmetrically arranged on the front and rear sides of the bottom lens holder 314 .

[0040] The convex lens 32 is fixedly connected to the lens fixing plate 313 in the horizontal direction. The lens fixing plate 313 defines an upper optical path 3131 adjacent to the convex lens 32, which mates with the display screen 11 and allows light to pass through. The concave lens 33 is fixedly connected to the bottom lens holder 314 in the vertical direction. A first bottom reflector 34 and a second bottom reflector 35 are arranged at an angle in front and behind the concave lens 33, respectively. The first bottom reflector 34 is located below the convex lens 32, with the angle between the first bottom reflector 34 and the concave lens 33 being -45°. The second bottom reflector 35 is located below the upper optical path 3131, with the angle between the second bottom reflector 35 and the concave lens 33 being 45°.

[0041] The display assembly 1 includes a display screen 11, a screen fixing frame 12 for fixing the display screen 11, and a screen rotation axis 13 arranged along the length direction of the display screen 11 and fixedly connected to the screen fixing frame 12. Both ends of the screen rotation axis 13 are rotatably connected to the fixing frames 21 on both sides.

[0042] The imaging bracket 2 is internally equipped with a rotating mirror assembly 24 for cooperating with the internal projection base 3 and changing the projection light path of the display screen 11. The rotating mirror assembly 24 includes a top mirror 241, a rotating bracket 242 for securing the top mirror 241, and a mirror rotation shaft 243 arranged along the length of the top mirror 241 and fixedly connected to the rotating bracket 242. The ends of the mirror rotation shaft 243 are rotatably connected to the two side brackets 21. The screen bracket 12 and the rotating bracket 242 are connected by a connecting rod assembly 5. The angle of the screen bracket 12 and the rotating bracket 242 is adjusted by the drive assembly 4.

[0043] Reference Figure 4 and Figure 5 The drive assembly 4 includes a motor 41, a motor screw 42, and a screw stud 43. A motor fixing plate 44 and a motor rotating plate 45 are provided on the lower side of the lens fixing plate 313 for mounting the motor 41. The motor fixing plate 44 is fixedly connected to the motor 41, the motor rotating plate 45 is fixedly connected to the lens fixing plate 313, and the motor rotating plate 45 is movably connected to the motor fixing plate 44. A screw through hole 3132 is provided on one side of the lens fixing plate 313 for the motor screw 42 to pass through. The screw stud 43 is threadedly engaged with the motor screw 42. The rotating bracket 242 is provided with a stud fixing seat 2421 for the screw stud 43 to be fixedly connected.

[0044] Reference Figure 6 The connecting rod assembly 5 is disposed on the side of the rotating bracket 242 away from the stud fixing seat 2421. The connecting rod assembly 5 includes a mirror rocker 51 and a mirror connecting rod 52. The mirror rocker 51 is fixedly connected to the side of the screen fixing frame 12 away from the driving assembly 4. The rotating bracket 242 is integrally connected to an edge position away from the mirror rotation axis 243, and the hinge seat 2422 for rotational connection of the mirror connecting rod 52 is integrally connected. The end of the mirror connecting rod 52 away from the hinge seat 2422 is rotationally connected to the mirror rocker 51.

[0045] The implementation principle of a vision detection device in the embodiment of the present application is as follows: Figure 7 When the vision test device is in the far vision test mode, the display screen 11 is used to display the vision chart. The LCD screen is in a horizontal state. The vision chart is reflected by the two bottom reflectors and refracted by the concave lens 33, and then illuminated by the top convex lens 32 on the rotating reflector. The rotating reflector shines horizontally from the window to the human eye in front of the device. At this time, the vision chart seen by the human eye is the far vision chart at an equivalent distance of 5 meters. Figure 8 When the vision detection device is in the near vision detection mode, the motor 41 rotates and drives the screw nut to rotate to the top of the screw, and the screw nut drives the connecting rod assembly 5 through the rotating bracket 242, and then drives the screen fixing frame 12 to rotate the display to a vertical state. At this time, the vision chart on the display screen 11 can be directly seen by the human eye, that is, a 33cm near vision chart.

[0046] The above are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application shall be included in the scope of protection of the present application. In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present application can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

Claims

1. A vision detection device, characterized in that: The device comprises a display assembly (1) for projecting an eye chart, an imaging support (2) for movably connecting the display assembly (1), an internal projection base (3) disposed below the imaging support (2) and for cooperating with the display assembly (1), a driving assembly (4) for changing the projection angle of the display assembly (1), and a connecting rod assembly (5); The imaging bracket (2) is internally movably connected to a rotating reflector assembly (24) for cooperating with the internal projection base (3) and for changing the projection light path of the display assembly (1).

2. A vision detection device according to claim 1, characterized in that: The internal projection base (3) comprises an optical path support (31), a convex lens (32), a concave lens (33), a first bottom reflector (34) and a second bottom reflector (35); the convex lens (32) is fixedly connected to the top side of the optical path support (31) in the horizontal direction; the concave lens (33) is fixedly connected to the optical path support (31) in the vertical direction and is located below the convex lens (32); the first bottom reflector (34) and the second bottom reflector (35) are respectively arranged obliquely on the front and rear sides of the concave lens (33); the first bottom reflector (34) is located below the convex lens (32); the angle between the first bottom reflector (34) and the concave lens (33) is -45°, and the angle between the second bottom reflector (35) and the concave lens (33) is 45°.

3. A vision detection device according to claim 2, characterized in that: The light path bracket (31) is provided with a light shielding plate (317) at a central position for blocking the concave lens (33), and the light shielding plate (317) is provided with a first light path channel (3171) cooperating with the first bottom reflector (34) and a second light path channel (3172) cooperating with the second bottom reflector (35) on both sides.

4. The vision detection device according to claim 2, wherein: The display assembly (1) comprises a display screen (11), a screen fixing frame (12) for fixing the display screen (11), and a screen rotation axis (13) arranged along the length direction of the display screen (11) and fixedly connected to the screen fixing frame (12), wherein the screen rotation axis (13) is rotatably connected to two opposite inner side walls of the imaging bracket (2).

5. The vision detection device according to claim 4, characterized in that: The rotating reflector assembly (24) comprises a top reflector (241), a rotating bracket (242) for fixing the top reflector (241), and a reflector rotating shaft (243) arranged along the length direction of the top reflector (241) and fixedly connected to the rotating bracket (242); the reflector rotating shaft (243) is rotatably connected to two opposite inner side walls of the imaging bracket (2).

6. The vision detection device according to claim 5, characterized in that: The optical path bracket (31) comprises a bottom support plate (311), support angle irons (312) vertically arranged and dispersedly arranged at each corner position of the bottom support plate (311), a lens fixing plate (313) arranged in the horizontal direction and fixedly connected to the top of each support angle iron (312) for mounting the convex lens (32), a bottom lens seat (314) for mounting the concave lens (33), a first tripod (315) for mounting the first bottom reflector (34), and a second tripod (316) for mounting the second bottom reflector (35). The lens fixing plate (313) is provided with an upper optical path channel (3131) on one side, which cooperates with the display screen (11) and allows the optical path to pass through.

7. The vision detection device according to claim 6, characterized in that: The driving assembly (4) comprises a motor (41), a motor screw (42) and a screw stud (43); a motor fixing plate (44) and a motor rotating plate (45) for mounting the motor (41) are provided on the lower side of the lens fixing plate (313); the motor fixing plate (44) and the motor (41) are fixedly connected; the motor rotating plate (45) and the lens fixing plate (313) are fixedly connected; and the motor rotating plate (45) and the motor fixing plate (44) are movably connected.

8. The vision detection device according to claim 7, characterized in that: The lens fixing plate (313) is provided with a screw through hole (3132) on one side for the motor screw (42) to pass through, the screw stud (43) is threadedly engaged with the motor screw (42), and the rotating bracket (242) is provided with a stud fixing seat (2421) for fixing the screw stud (43).

9. The vision detection device according to claim 8, characterized in that: The connecting rod assembly (5) is arranged on a side of the rotating bracket (242) away from the stud fixing seat (2421), and the connecting rod assembly (5) includes a mirror rocker (51) and a mirror connecting rod (52). The mirror rocker (51) is fixedly connected to a side of the screen fixing frame (12) away from the driving assembly (4). The rotating bracket (242) is integrally connected to a hinge seat (2422) for rotatably connecting the mirror connecting rod (52) at an edge position away from the side of the mirror rotating shaft (243). The end of the mirror connecting rod (52) away from the hinge seat (2422) is rotatably connected to the mirror rocker (51).

10. The vision detection device according to claim 6, characterized in that: The imaging bracket (2) comprises two side fixing frames (21) vertically fixedly connected to the upper side of the lens fixing plate (313) and symmetrically arranged on both sides, a rear cover plate (22) vertically fixedly connected to the lens fixing plate (313) and located between the two side fixing frames (21), and a dustproof plate (23) provided between the two side fixing frames (21) and located on the upper side.

Images