Vision detection equipment

Abstract

The invention discloses vision detection equipment, and belongs to the technical field of vision detection, the vision detection equipment comprises a driving device and a vision detection device, the vision detection device is connected with the driving device, so that the driving device can drive the vision detection device to move to detect the vision of different eyes of a user. The driving device is controlled to drive the vision detection device to move, so that the vision detection device does not need to cover the range of two eyes of a user at the same time, the size of the vision detection device can be reduced, the size of the whole vision detection equipment is reduced, and transportation and installation of the vision detection equipment are facilitated. And the driving device can automatically drive the vision detection device to move, so that the operation is simple, convenient and more accurate, the detection error possibly caused by holding the vision detection device by a user is avoided, and the automation degree of the vision detection equipment is improved.

Description

Technical Field

[0001] This application relates to the field of vision testing technology, and more particularly to a vision testing device. Background Technology

[0002] Vision testing is a commonly used medical device used to assess people's visual levels and determine their eye health. The optotype screen in a vision tester displays visual images, allowing observation of different visual levels in the person being tested.

[0003] In related technologies, visual acuity tests are usually performed using visual acuity charts or large optometry equipment, both of which require a large amount of space and are inconvenient to use. Summary of the Invention

[0004] This application provides a vision testing device to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this application provides a vision testing device, comprising: Drive unit; and, A vision testing device is connected to a driving device so that the driving device can move the vision testing device to test the vision of different eyes of a user.

[0006] Optionally, the vision testing device includes: The lens barrel is connected to the driving device; A sight target, wherein the sight target is disposed at one end of the lens barrel; and, An optical lens is disposed at the other end of the lens barrel so that the user can observe the target through the optical lens.

[0007] Optionally, the vision testing device further includes a housing having at least two through holes; The driving device and the vision detection device are disposed in the housing, and the driving device can drive the vision detection device to reciprocate so that the optical lens can be set to correspond to different through holes.

[0008] Optionally, the driving device includes: Mounting bracket, the mounting bracket being provided with mounting holes, the lens barrel passing through the mounting holes; and, An electric motor is connected to the mounting bracket to drive the mounting bracket to reciprocate.

[0009] Optionally, the vision testing device further includes a positioning component for detecting the position of the vision testing device.

[0010] Optionally, the positioning component includes a light-emitting element, a photosensitive element, and a light-blocking element. The light-emitting element is disposed on the housing, the photosensitive element is disposed on the mounting bracket, and the light-blocking element is disposed on the mounting bracket, with the light-blocking element located between the light-emitting element and the photosensitive element. The light-blocking element has a light-transmitting hole so that when the mounting bracket moves to a preset position, the light emitted by the light-emitting element can be emitted to the photosensitive element through the light-transmitting hole; and / or, The positioning component includes at least two magnetic sensors, which are spaced apart along the movement path of the mounting bracket.

[0011] Optionally, the vision testing device further includes: A housing having at least two through holes, a driving device and a vision detection device disposed within the housing, wherein the driving device is capable of driving the vision detection device to reciprocate, so that the vision detection device can be configured to correspond to different through holes; and, A light-shielding element is movably disposed on the housing to open or close the through hole.

[0012] Optionally, the light-shielding member includes at least two light-shielding sheets, and each light-shielding sheet is provided with a corresponding through hole; The vision testing device further includes a reset member connected between at least two of the light-shielding sheets. The reset member is used to maintain the tendency of the two light-shielding sheets to move closer to each other in order to close the through holes corresponding to the light-shielding sheets.

[0013] Optionally, the vision testing device is at least partially located between the two light-shielding plates, so that when the vision testing device moves, it can drive the light-shielding plates to open the corresponding through holes.

[0014] Optionally, the target element includes a display screen for displaying different targets; and / or, The size of the lens barrel tends to increase in the direction away from the through hole.

[0015] In the vision testing device of this application embodiment, the vision testing device is moved by controlling the drive device, so that the vision testing device does not need to cover the user's eyes simultaneously, which reduces the size of the vision testing device and thus the overall size of the vision testing device, making it easier to transport and install. Furthermore, the drive device can automatically move the vision testing device, making operation simple, convenient, and more accurate, avoiding detection errors that may occur if the user holds the vision testing device, and improving the automation level of the vision testing device.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0019] Figure 1 This is a schematic diagram of the overall structure of the vision testing device provided in an exemplary embodiment of this disclosure; Figure 2 yes Figure 1 Cross-sectional view of the internal structure of a vision testing device; Figure 3 yes Figure 1 Another structural diagram of the visual acuity testing equipment; Figure 4 yes Figure 1 A schematic diagram of the internal structure of a visual acuity testing device; Figure 5 yes Figure 4 A structural diagram of the middle structure from another angle.

[0020] Explanation of reference numerals in the attached figures: 1. Vision testing equipment; 11. Drive unit; 111. Mounting bracket; 1111. Mounting hole; 112. Motor; 12. Visual acuity testing device; 121. Lens tube; 122. Optical target; 123. Optical lens; 13. Shell; 131. Through hole; 132. Eye shield; 1321. Bottom wall; 1322. Peripheral side wall; 14. Positioning component; 141. Light-blocking component; 142. Magnetic sensor; 15. Light-shielding component; 151. Light-shielding sheet; 16. Reset component; 17. Joystick. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0022] This application provides a vision testing device 1, with reference to... Figure 1 and Figure 2 It includes a drive unit 11 and a vision detection device 12. The vision detection device 12 is connected to the drive unit 11 so that the drive unit 11 can drive the vision detection device 12 to move in order to detect the vision of different eyes of the user.

[0023] The vision testing device 12 is used to test a user's vision. It can be a combination of a lens group and a vision chart, or a lens group and a projection module, etc., thereby ensuring that the user can accurately test their vision while reducing the space occupied by the vision testing device 12, eliminating the need for a space as long as five meters. Furthermore, since the vision testing device 12 in this embodiment only tests the vision of one eye of the user at a time, its size can be significantly reduced compared to existing devices, further reducing the size of the vision testing device 12, facilitating installation and transportation, and greatly reducing production costs and manufacturing difficulty.

[0024] The drive device 11 can be a motor 112, a cylinder, or other devices. The vision testing device 12 can be directly installed at the drive end of the drive device 11 so that the drive device 11 can directly drive the vision testing device 12 to move. Alternatively, a transmission mechanism, such as a screw, lead screw, or gear set, can be installed between the drive device 11 and the vision testing device 12. This allows for the adjustment of the relative positions of the drive device 11 and the vision testing device 12 while ensuring the driving effect, thereby making reasonable use of the installation space and reducing the overall volume of the vision testing device 1.

[0025] In practical use, the drive device 11 controls the vision detection device 12 to first align with one of the user's eyes and detect the vision of that eye. After the detection is completed, the drive device 11 controls the vision detection device 12 to move to another position to align with the user's other eye and detect the vision of that eye, thus completing the entire vision detection process.

[0026] In this embodiment, the vision testing device 12 is moved by the control drive device 11, so that the vision testing device 12 does not need to cover both eyes of the user at the same time, thus reducing the size of the vision testing device 12 and consequently the size of the entire vision testing device 1, facilitating the transportation and installation of the vision testing device 1. Furthermore, the drive device 11 can automatically drive the vision testing device 12, making operation simple, convenient, and more accurate, avoiding detection errors that may occur if the user holds the vision testing device 12, and improving the automation level of the vision testing device 1.

[0027] In some embodiments, refer to Figures 1 to 3The vision testing device 12 includes a lens barrel 121, a visual target 122, and an optical lens 123. The lens barrel 121 is connected to the drive device 11. The visual target 122 is disposed at one end of the lens barrel 121. The optical lens 123 is disposed at the other end of the lens barrel 121 so that the user can observe the visual target 122 through the optical lens 123.

[0028] The visual target 122 serves as the user's observation target and is typically used to display standard visual acuity symbols (such as the "E" visual target) to test the user's vision. For example, if the visual target 122 is a projection module, the "E" visual target can be projected onto the housing 13 or other suitable location for the user to observe. The optical lens 123 adjusts the distance between the user's eye and the image of the visual target. Through its specific focal length and optical characteristics, it causes the visual target 122, which is actually closer, to be imaged as if it were at a distance in the user's eye, thus creating a standard vision testing environment. The distance between the image of the visual target 122 and the user's eye is typically set to 5 meters. The lens barrel 121 acts as a frame, fixing the relative position between the visual target 122 and the optical lens 123, ensuring the stability and accuracy of the vision testing device 12. During testing, the drive device 11 moves the lens barrel 121 to different positions of the user's eyes to test the vision of the corresponding eyes.

[0029] In some embodiments, refer to Figures 1 to 3 The vision testing device 1 also includes a housing 13, which has at least two through holes 131. A drive device 11 and a vision testing device 12 are disposed in the housing 13, and the drive device 11 can drive the vision testing device 12 to reciprocate so that the optical lens 123 can be set to correspond to different through holes 131.

[0030] The housing 13 can conceal the internal drive unit 11 and vision testing device 12, improving the overall aesthetics of the vision testing device 1. Furthermore, the housing 13 can effectively prevent dust and foreign objects from entering the device, protecting the optical and mechanical components in the vision testing device 12 and drive unit 11, thereby significantly enhancing the reliability and service life of the vision testing device 1.

[0031] In some alternative embodiments, housing 13 includes a first housing 13 and a second housing 13 that are detachably connected, facilitating the installation, maintenance and replacement of the drive unit 11 and the vision detection device 12 inside housing 13.

[0032] In some embodiments, refer to Figures 1 to 5 The drive device 11 includes a mounting frame 111 and a motor 112. The mounting frame 111 is provided with a mounting hole 1111, through which the lens barrel 121 passes. The motor 112 is connected to the mounting frame 111 for transmission, so as to drive the mounting frame 111 to reciprocate.

[0033] Mounting bracket 111 is used to fix lens barrel 121, so that motor 112 can drive lens barrel 121 to move by driving mounting bracket 111, which facilitates adjustment of the relative position between motor 112 and lens barrel 121 and realizes reasonable use of space. Understandably, there are various ways to connect mounting bracket 111 and lens barrel 121, and designers can make reasonable designs according to actual needs; for example, when the connection between mounting bracket 111 and lens barrel 121 is detachable, mounting bracket 111 can be fixedly connected to lens barrel 121 by at least one of the following methods, including but not limited to screw connection, snap connection, or plug connection; as another example, when the connection between mounting bracket 111 and lens barrel 121 is non-detachable, mounting bracket 111 can be fixedly connected to lens barrel 121 by welding, but not limited to welding.

[0034] The mounting holes 1111 on the mounting bracket 111 can partially accommodate and fix the microscope tube 121, allowing the microscope tube 121 to be fixed in the middle position of the mounting bracket 111, thus improving the stability of the microscope tube 121 installation. Furthermore, the mounting holes 1111 ensure that the mounting bracket 111 does not physically obstruct the front end of the microscope tube 121 while fixing it, allowing the user to directly observe the target 122 through the optical lens 123, thereby improving the accuracy of the inspection.

[0035] In some embodiments, refer to Figures 1 to 5 The vision testing device 1 also includes a positioning component 14, which is used to detect the position of the vision testing device 12.

[0036] This embodiment of the application uses a positioning component 14 to detect the specific position of the vision testing device 12 during operation, facilitating alignment between the lens barrel 121 and the through hole 131. This allows the user to observe the visual target 122 along a preset optical path, thereby improving the accuracy of the test results. The positioning component 14 may include an infrared sensor, a pressure sensor, an encoder, etc., and this embodiment of the application does not impose any limitations on this.

[0037] For example, when the positioning component 14 is a pressure sensor, the pressure sensor can be set in a suitable position so that when the motor 112 drives the lens barrel 121 to move to the position corresponding to the through hole 131, the pressure sensor contacts the lens barrel 121 or the mounting bracket 111 to generate different pressure signals. The signals are transmitted to the motor 112, thereby stopping the motor 112 from running, thus ensuring the accuracy of the movement of the lens barrel 121.

[0038] In some embodiments, refer to Figures 1 to 5The positioning component 14 includes a light-emitting element, a photosensitive element, and a light-blocking element 141. The light-emitting element is disposed on the housing 13; the photosensitive element is disposed on the mounting bracket 111; the light-blocking element 141 is disposed on the mounting bracket 111 and is located between the light-emitting element and the photosensitive element. The light-blocking element 141 is provided with a light-transmitting hole so that when the mounting bracket 111 moves to a preset position, the light emitted by the light-emitting element can be emitted to the photosensitive element through the light-transmitting hole.

[0039] For example, when the motor 112 drives the mounting bracket 111 and the lens barrel 121, photosensitive element, and light-blocking element 141 fixed thereon to move together, the light-emitting element, which is always fixed on the housing 13, continuously emits a light beam. This light beam is blocked by the light-blocking element 141 and cannot reach the photosensitive element. If the mounting bracket 111 moves to a preset detection position (such as the position corresponding to the lens barrel 121 and the through hole 131), the light-transmitting hole on the light-blocking element 141 moves exactly to the line connecting the light-emitting element and the photosensitive element. At this time, the light emitted by the light-emitting element can pass through the light-transmitting hole and be received by the photosensitive element. The photosensitive element then generates an electrical signal and transmits it to the motor 112, causing the motor 112 to stop running, thereby ensuring the accurate correspondence between the lens barrel 121 and the through hole 131.

[0040] Alternatively, the positioning component 14 in this embodiment can be positioned in the middle of the housing 13 to reset the visual inspection device. Specifically, it can be configured such that when the light-transmitting hole on the light-blocking component 141 is precisely aligned with the line connecting the light-emitting component and the photosensitive component, the visual inspection device is in its initial position. At this point, moving it to the side by a fixed distance (a preset distance) will align the lens barrel 121 with the through hole 131, thereby improving the accuracy of the visual inspection device's movement.

[0041] The embodiments of this application can achieve non-contact precise positioning through the light-emitting element, the photosensitive element, and the light-blocking element 141. It has a rapid response and strong anti-interference ability, avoids the problem of easy wear of contact sensors, greatly improves the reliability of visual inspection equipment, and thus ensures the accuracy of user vision detection.

[0042] In some embodiments, refer to Figures 1 to 5 The positioning component 14 also includes at least two magnetic sensors 142, which are spaced apart along the movement path of the mounting bracket 111.

[0043] The magnetic sensor 142 located on the moving path can respond when the mounting bracket 111 moves to a certain position, thereby determining the position of the visual inspection device. For example, two magnetic sensors 142 can be provided, respectively located at both ends of the moving path of the mounting bracket 111. When the mounting bracket 111 moves to one end, the magnetic sensor 142 at that location senses the corresponding magnetic field through the Hall effect, thereby outputting a corresponding signal to accurately determine the position of the visual inspection device. Similarly, when the mounting bracket 111 moves to the other end, the other magnetic sensor 142 is triggered, thus inferring the position of the visual inspection device.

[0044] By incorporating the magnetic sensor 142, the positioning accuracy of the vision inspection device is further improved, thereby enhancing the reliability and stability of the vision inspection system. It is understood that if the magnetic sensor 142 is positioned at both ends of the moving path of the mounting bracket 111, when the vision inspection device is not in its initial position, the magnetic sensor 142 can determine which end of the housing 13 the vision inspection device is located at, thus facilitating the resetting of the vision inspection device.

[0045] In some embodiments, refer to Figures 1 to 5 The vision testing device 1 also includes a housing 13 and a light shield 15. The housing 13 is provided with at least two through holes 131. The driving device 11 and the vision testing device 12 are disposed in the housing 13, and the driving device 11 can drive the vision testing device 12 to reciprocate so that the vision testing device 12 can be configured to correspond to different through holes 131. The light shield 15 is movably disposed in the housing 13 for opening or closing the through holes 131.

[0046] By setting up the light-shielding component 15, the through hole 131 can be closed when the vision inspection equipment is idle, thereby reducing the probability of dust and foreign objects entering the housing 13 and contaminating the vision inspection device, and improving the service life of the vision inspection equipment.

[0047] The light-shielding component 15 can be a flat plate that can slide up and down the housing 13. When the user lifts the plate upwards, the through hole 131 is opened; when the user pushes the plate downwards, the through hole 131 is closed. Understandably, the light-shielding component 15 can also be designed as a flip cover. Furthermore, a drive structure such as a motor 112 or a cylinder can be connected to the light-shielding component 15 for transmission, thereby achieving automatic control of the light-shielding component 15 and improving the automation level of the visual inspection equipment.

[0048] In some embodiments, refer to Figures 1 to 5 The light-shielding member 15 includes at least two light-shielding pieces 151, and each light-shielding piece 151 is provided with a corresponding through hole 131. Each light-shielding piece 151 is used to open or close the corresponding through hole 131.

[0049] By setting the light-shielding element 15 as at least two independent light-shielding plates 151, and making each light-shielding plate 151 correspond to a through hole 131, independent control of each through hole 131 can be achieved. In specific use, if the user needs to test the left eye, the corresponding light-shielding plate 151 can be controlled to open the through hole 131, while the other light-shielding plate 151 keeps the through hole 131 blocked, and at the same time, the user's right eye is blocked, ensuring the standardization of the testing process; if the user needs to test the left eye, the corresponding light-shielding plate 151 can be controlled to open the through hole 131, while the other light-shielding plate 151 keeps the through hole 131 blocked.

[0050] By setting two independent light-shielding plates 151, the two through holes 131 can be opened and closed alternately, reducing the interference that users may experience during the test and thus improving the accuracy of the test results.

[0051] In some embodiments, refer to Figures 1 to 5 The vision testing device 1 also includes a reset member 16, which is connected between at least two light-shielding plates 151. The reset member 16 is used to maintain the tendency of the two light-shielding plates 151 to move closer to each other so as to close the corresponding through holes 131 of the light-shielding plates 151.

[0052] The reset member 16 can be a structure with self-stretching properties such as a tension spring or elastic rope, and the initial length of the reset member 16 is less than the minimum distance between the two light-shielding plates 151, so that the reset member 16 always remains taut and keeps the two light-shielding plates 151 in the closed through hole 131 state without the influence of external force.

[0053] For example, a limiting part can be provided on the housing 13 to limit the light-shielding sheet 151, so that the distance between the two light-shielding sheets 151 is always greater than the initial length of the reset member 16. The limiting part can be a groove, in which part of the light-shielding sheet 151 is accommodated and abuts against the side wall of the groove; the limiting part can also be a protrusion that abuts against the light-shielding sheet 151, thereby restricting the movement of the light-shielding sheet 151.

[0054] By setting the reset component 16, the light shield 151 can automatically return to the protective state of closing the through hole 131 when the vision testing device 1 is not working. This reduces the risk of internal components being contaminated or damaged due to human negligence in forgetting to close the through hole, improves the safety and stability of the vision testing device 1, and simplifies the user's operation steps, thereby improving the user experience.

[0055] In some embodiments, refer to Figures 1 to 5The vision testing device 12 is at least partially located between two light-blocking plates 151, so that when the vision testing device 12 moves, it can cause the light-blocking plates 151 to open the corresponding through-holes 131. Based on this, the operation of the user actively controlling the opening of the light-blocking plates 151 is eliminated. When the vision testing device 12 moves to the position corresponding to the through-hole 131, the light-blocking plates 151 also open, thereby further simplifying the user operation and ensuring that the light-blocking plates 151 are in the open state during vision testing, avoiding wasted time and improving testing efficiency.

[0056] In some embodiments, the target element 122 includes a display screen for displaying different targets; and / or, the size of the lens barrel 121 tends to increase in the direction away from the through hole 131.

[0057] By setting the display screen as a target component 122, users can display different types and sizes of targets as needed to meet their different requirements.

[0058] By setting the size of the scope barrel 121 to tend to increase in the direction away from the through hole 131, the probability of the user's line of sight being blocked by the inner wall of the scope barrel 121 is reduced, ensuring that the user's field of vision is focused on the target 122 and improving the accuracy of the detection.

[0059] In some embodiments, refer to Figures 1 to 5 The housing 13 is equipped with an eye shield 132, which includes a bottom wall 1321 and peripheral side walls 1322. A through hole 131 is provided on the bottom wall 1321. The peripheral side walls 1322 surround the bottom wall 1321 and are designed to fit the user's head to block external light from shining into the user's eyes. When the user uses the vision testing device 1, the eye area can be enclosed within the eye shield 132 to prevent external light from interfering with the user's vision. It also serves a positioning function, allowing the user's eyes to more accurately align with the through hole 131 on the bottom wall 1321, thereby improving the accuracy of the test.

[0060] In some embodiments, the vision testing device 1 further includes a control device, which is communicatively connected to the drive device 11 and the vision testing device 12 to control the drive device 11 to drive the vision testing device 12 to move. The control device may include electronic components such as a PCB board, a processor, and a memory, thereby controlling the drive device 11 and the vision testing device 12 according to different instructions input by the user or according to preset instructions, thereby improving the efficiency of vision testing.

[0061] In some embodiments, refer to Figures 1 to 5The vision testing device 1 includes a rocker arm 17, at least a portion of which is movably disposed on the outer surface of the vision testing device 1; the rocker arm 17 is used to receive user operations to cause a control device to generate directional information, which is used to characterize the orientation of the visual target 122 in the vision testing device 12.

[0062] The joystick 17 has a simple structure and is easy to operate. Users of all ages can intuitively understand that by controlling the swing direction of the joystick 17, they can select the direction of the visible target "E", reducing the learning cost and making it easy for users to use.

[0063] For example, if the user sees a visual target "E" facing to the right, he pushes the joystick to the right. The control device can then obtain the electrical signal corresponding to the rightward swing of the joystick 17 and generate directional information. By comparing the actual direction of the visual target "E" with this directional information, it can determine whether the user's choice is correct and thus detect the user's vision.

[0064] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0065] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0066] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0067] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A vision testing apparatus, characterized by, The application relates to a vision detection device. The device comprises: a driving device; and 2. The visual acuity detection device of claim 1, wherein, a vision detection device connected with the driving device, so that the driving device can drive the vision detection device to move to detect the vision of different eyes of a user. The vision detection device comprises: a lens barrel connected with the driving device; a vision target arranged at one end of the lens barrel; and 3. The visual acuity detection device of claim 2, wherein, an optical lens arranged at the other end of the lens barrel, so that a user can observe the vision target through the optical lens. The vision detection device further comprises a housing provided with at least two through holes; 4. The visual acuity detection device of claim 3, wherein, the driving device and the vision detection device are arranged in the housing, and the driving device can drive the vision detection device to reciprocate, so that the optical lens can be arranged corresponding to different through holes. The driving device comprises: a mounting frame provided with a mounting hole, and the lens barrel is arranged in the mounting hole; and 5. The visual acuity detection device of claim 4, wherein, a motor in transmission connection with the mounting frame to drive the mounting frame to reciprocate.

6. The visual acuity detection device of claim 5, wherein, The vision detection device further comprises a positioning assembly for detecting the position of the vision detection device. The positioning assembly comprises a light-emitting element, a light-sensitive element and a light-blocking element, the light-emitting element is arranged in the housing, the light-sensitive element is arranged in the mounting frame, the light-blocking element is arranged in the mounting frame and located between the light-emitting element and the light-sensitive element, and the light-blocking element is provided with a light-transmitting hole, so that when the mounting frame moves to a preset position, the light emitted by the light-emitting element can be transmitted to the light-sensitive element through the light-transmitting hole. and / or 7. The visual acuity testing device of any one of claims 1 to 6, wherein, The positioning assembly comprises at least two magnetic sensors, and the at least two magnetic sensors are arranged along the movement path of the mounting frame. The vision detection device further comprises: a housing provided with at least two through holes, the driving device and the vision detection device are arranged in the housing, and the driving device can drive the vision detection device to reciprocate, so that the vision detection device can be arranged corresponding to different through holes; and 8. The visual acuity detection device of claim 7, wherein, a light-blocking element movably arranged in the housing to open or close the through holes. The light-blocking element comprises at least two light-blocking pieces, and one light-blocking piece corresponds to one through hole.

9. The visual acuity detection device of claim 8, wherein, The vision detection device further comprises a reset element connected between the at least two light-blocking pieces, and the reset element is used for maintaining the trend of the two light-blocking pieces to approach each other to close the through holes corresponding to the light-blocking pieces.

10. The visual acuity detection device according to any one of claims 3 to 6, characterized in that, The vision detection device is at least partially located between the two light-blocking pieces, so that when the vision detection device moves, the light-blocking pieces can be driven to open the corresponding through holes. The vision target comprises a display screen for displaying different vision targets; and / or In the direction away from the through holes, the size of the lens barrel tends to increase.

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