Vision detection device

Abstract

The utility model relates to the technical field of medical detection, and discloses a vision detection device which comprises a visual chart, a plane mirror and a moving device, the plane mirror and the visual chart are arranged at an interval, an imaging surface of the plane mirror is arranged opposite to the visual chart, and a person to be detected is located between the visual chart and the plane mirror. The visual chart is presented by the plane mirror; the moving device is connected with the plane mirror, or the moving device is connected with the visual chart and the plane mirror, and is used for adjusting the distance between the to-be-detected person and the visual chart presented by the plane mirror; the moving device drives the plane mirror to move or simultaneously drives the plane mirror and the visual chart to move, so that the distance between the to-be-detected person and the visual chart presented in the plane mirror can be adjusted. On the basis, the distance between the to-be-detected person and the visual chart presented by the plane mirror can be adjusted without moving the position of the to-be-detected person, so that the technical effect of improving the simplicity and convenience of vision detection is achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical testing technology, specifically to a vision testing device. Background Technology

[0002] To reduce the space occupied, existing vision testing devices typically incorporate a plane mirror, with the imaging surface of the plane mirror positioned opposite the vision chart. The person being tested then uses the vision chart within the plane mirror to perform the vision test, thus utilizing the imaging principle of the plane mirror to reduce the space required for the vision testing device.

[0003] The minimum visual acuity value of existing visual acuity charts is 0.1. When the test subject's visual acuity is less than 0.1, the test subject needs to walk closer to the plane mirror until they can see the largest image on the visual acuity chart. The distance between the test subject and the plane mirror at this point is recorded for conversion of the test subject's visual acuity value. However, this testing process requires the test subject to move, causing inconvenience in the use of the visual acuity testing device. Utility Model Content

[0004] In view of this, the present invention provides a vision testing device to solve the problem of inconvenience in using existing vision charts.

[0005] This utility model provides a vision testing device, comprising:

[0006] Eye chart;

[0007] A plane mirror is disposed at an interval from the visual acuity chart, with the imaging surface of the plane mirror facing the visual acuity chart. The person to be tested is positioned between the visual acuity chart and the plane mirror, and is used to perform visual acuity testing through the visual acuity chart presented by the plane mirror.

[0008] A mobile device, which is connected to the plane mirror, or the mobile device is connected to both the eye chart and the plane mirror, for adjusting the distance between the person being tested and the eye chart displayed on the plane mirror.

[0009] Beneficial effects: By moving the plane mirror or simultaneously moving both the plane mirror and the eye chart, the distance between the test subject and the eye chart displayed in the plane mirror can be adjusted. Therefore, the distance between the test subject and the eye chart displayed in the plane mirror can be adjusted without requiring the test subject to move, thus improving the convenience of vision testing.

[0010] In one alternative implementation, the mobile device includes:

[0011] Drive structure;

[0012] A transmission structure is connected to the drive structure, with one side of the transmission structure connected to the eye chart and the plane mirror, for moving the eye chart and the plane mirror under the drive of the drive structure; or, one side of the transmission structure is connected to the plane mirror, for moving the plane mirror under the drive of the drive structure.

[0013] Beneficial effects: By driving the transmission structure through the drive structure, the plane mirror or both the plane mirror and the vision chart can be moved, thereby adjusting the distance between the test subject and the vision chart displayed on the plane mirror without the need for manual adjustment, thus improving the ease of use of the vision testing device.

[0014] In one optional embodiment, the drive structure is rotatably connected to the transmission structure, and the drive structure has an output shaft;

[0015] The transmission structure includes:

[0016] The first rotating component is connected to the output shaft;

[0017] The second rotating component is spaced apart from the first rotating component;

[0018] The transmission component is connected on one side to both the first and second rotating components, and on the other side to both the eye chart and the plane mirror, or on the other side to the plane mirror.

[0019] Beneficial effects: The rotational motion can be converted into linear motion by the first rotating component, the second rotating component and the transmission component, which can reduce the space required by the vision testing device, thereby reducing the space limitation of the vision testing device and improving the ease of use of the vision testing device.

[0020] In one alternative implementation, the mobile device includes:

[0021] A sliding structure is connected between the transmission component and the eye chart, and between the transmission component and the plane mirror. The sliding structure is used to drive the eye chart and the plane mirror to slide as the transmission component rotates.

[0022] Alternatively, the sliding structure is connected between the transmission member and the plane mirror, and the sliding structure is used to drive the plane mirror to slide as the transmission member rotates.

[0023] Beneficial effects: The sliding structure can limit the reciprocating movement of the plane mirror along the transmission component, thereby improving the stability of the plane mirror's movement. Alternatively, the sliding structure can limit the reciprocating movement of both the plane mirror and the eye chart along the transmission component, thereby improving the stability of both the plane mirror and the eye chart's movement.

[0024] In one alternative implementation, the sliding structure includes:

[0025] A guide member is provided on one side of the transmission member;

[0026] A sliding member is slidably connected to the guide member, the sliding member is fixedly connected to the transmission member, the sliding member is fixedly connected to the eye chart and the plane mirror, or the sliding member is fixedly connected to the plane mirror.

[0027] Beneficial effects: By having the slider slide along the length of the guide along the transmission component, the plane mirror can be moved only along the length of the guide, thus limiting the direction of movement of the plane mirror and improving the stability of its movement. Alternatively, the slider can be used to move both the plane mirror and the eye chart only along the length of the guide, thus limiting their movement and improving their stability as well.

[0028] In one optional embodiment, the transmission component is provided with multiple visual acuity scales. When the moving device moves the visual acuity chart and the plane mirror a preset distance, or when the moving device moves the plane mirror a preset distance, the distance between the person being tested and the visual acuity chart presented by the plane mirror corresponds one-to-one with the value of the visual acuity scale.

[0029] Beneficial effects: Medical staff can directly read the visual acuity scale of the person being tested without having to convert it to obtain the visual acuity value, thus improving the ease of obtaining the visual acuity value of the person being tested.

[0030] In one optional embodiment, the visual acuity scale is disposed on the surface of the transmission component, and the font of the visual acuity scale is oriented towards the subject being tested;

[0031] When the mobile device moves the eye chart and the plane mirror a preset distance, or when the mobile device moves the plane mirror a preset distance, the eye scale closest to the subject of the test is the subject of the test's eye value.

[0032] Beneficial effects: Medical staff stand at the eye chart position to test the visual acuity of the person being tested. When the moving device moves the plane mirror to a preset distance, the plane mirror stops moving, and the person being tested can see the opening direction of the test mark corresponding to a visual acuity value of 0.1. The visual acuity mark closest to the person being tested at this point is their visual acuity value. Based on this, medical staff do not need to move their position; the visual acuity scale can be read from the original position to know the person's visual acuity value, thus achieving the technical effect of improving the convenience of visual acuity testing.

[0033] In one alternative implementation, the distance that the mobile device drives the eye chart and the plane mirror to move each time is a preset value, or the distance that the mobile device drives the plane mirror to move each time is a preset value.

[0034] Beneficial effect: By setting the distance driven by the mobile device to a preset value, the technical effect of improving the ease of setting the preset distance of the mobile device can be achieved.

[0035] In one optional embodiment, the vision testing device includes:

[0036] A lifting structure, connected to the visual acuity chart, is used to adjust the height of the test marks on the test line of the visual acuity chart to be at the same height as the line of sight of the person being tested.

[0037] Beneficial effects: Medical staff use a lifting structure to raise the height of the test mark corresponding to a visual acuity value of 0.1 to the same height as the line of sight of the person being tested. When the person being tested can clearly see the opening direction of the test mark corresponding to 0.1, normal visual acuity testing is performed. That is, medical staff test the person being tested by adjusting the test marks on the test rows at different heights. The lifting structure drives the visual acuity chart to align the test marks on the test rows with the line of sight of the person being tested, which can improve the accuracy of the distance between the person being tested and the visual acuity chart presented in the plane mirror, thereby achieving the technical effect of improving the accuracy of visual acuity value testing.

[0038] In one alternative embodiment, the eye chart is provided with an illumination structure.

[0039] Beneficial effects: The illumination structure can enhance the brightness of the eye chart, avoiding the impact of insufficient light on the vision test results, thereby achieving the technical effect of improving the accuracy of vision testing. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a front view of the vision testing device according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of the mobile device according to an embodiment of the present utility model.

[0043] Figure 3This is a flowchart of the vision testing device testing process according to an embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Eye chart; 2. Plane mirror;

[0046] 3. Moving device; 301. Drive structure;

[0047] 302. Transmission structure; 3021. First rotating component; 3022. Second rotating component; 3023. Transmission component;

[0048] 303, Sliding structure; 3031, Guide component; 3032, Sliding component;

[0049] 304. Shell. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0051] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0052] According to an embodiment of the present invention, in one aspect, a vision testing device is provided, comprising:

[0053] Visual acuity chart 1;

[0054] A plane mirror 2 is set at an interval from the visual acuity chart 1. The imaging surface of the plane mirror 2 is set opposite to the visual acuity chart 1. The person to be tested is located between the visual acuity chart 1 and the plane mirror 2. The visual acuity is tested through the visual acuity chart presented by the plane mirror 2.

[0055] The mobile device 3 is connected to the plane mirror 2, or the mobile device 3 is connected to both the visual acuity chart 1 and the plane mirror 2, and is used to adjust the distance between the person being tested and the visual acuity chart presented by the plane mirror 2.

[0056] In the vision testing device of this embodiment, the distance between the test subject and the vision chart displayed on the plane mirror 2 can be adjusted by driving the plane mirror 2 to move, or by simultaneously driving the plane mirror 2 and the vision chart 1 to move, through the moving device 3. Based on this, the distance between the test subject and the vision chart displayed on the plane mirror 2 can be adjusted without the test subject moving, thereby achieving the technical effect of improving the simplicity of vision testing.

[0057] In this embodiment, the vision chart 1 has multiple rows of detection marks from top to bottom, for example, the detection marks are the letters "E". Adjacent letters "E" have different opening directions, and the letters in each row are the same size. Figure 1 As shown, the size of the letters in each row decreases as the height decreases, and each row of letters corresponds to a visual acuity value. For example, the largest letter corresponds to a visual acuity value of 0.1, and the smallest letter corresponds to a visual acuity value of 2.0.

[0058] Specifically, during the vision test, the medical staff positions themselves near the visual acuity chart 1 to indicate the test marks for different test rows. When the distance between the test subject and the visual acuity chart displayed in the plane mirror 2 is 5.0m, if the test subject can accurately state the opening direction of the largest test mark (i.e., the opening direction of the test mark corresponding to a visual acuity value of 0.1), it proves that the test subject can perform a normal vision test. For example, during a normal vision test, the test subject can state the opening direction of the test mark corresponding to a visual acuity value of 0.4, and further, the test subject can state the letter direction corresponding to a visual acuity value of 0.5, but the test subject cannot state the letter direction corresponding to a visual acuity value of 0.6. In this case, it can be proven that the test subject's visual acuity is 0.5.

[0059] The test marks on the test line refer to the test marks specifically designated by medical personnel, and can be any test mark on visual acuity chart 1. The visual acuity test range on visual acuity chart 1 is 0.1 to 2.0. When the person being tested cannot describe the opening direction of the test mark corresponding to a visual acuity value of 0.1, it means that the person being tested cannot see any of the test marks on visual acuity chart 1. In this case, the plane mirror 2 can be moved closer to the person being tested by the moving device 3 until the person being tested can clearly see the opening direction of the test mark corresponding to a visual acuity value of 0.1. The visual acuity value of the person being tested is calculated by the distance between the person being tested and the visual acuity chart presented by the plane mirror 2.

[0060] Of course, in other embodiments, the type and size of the detection marks on the vision chart 1 can be adjusted according to the different designs of the vision testing device.

[0061] In this embodiment, the moving device 3 is connected to the plane mirror 2. The moving device 3 drives the plane mirror 2 to move, so as to adjust the distance between the person being tested and the vision chart presented by the plane mirror 2.

[0062] Of course, in other embodiments, depending on the design of the vision testing device, two moving devices 3 can be provided. One moving device 3 is connected to the plane mirror 2, and the other moving device 3 is connected to the vision chart 1, so that both the plane mirror 2 and the vision chart 1 can move, thus achieving the same adjustment of the distance between the test subject and the vision chart presented by the plane mirror 2. Compared with other embodiments, in this embodiment, the moving device 3 only controls the movement of the plane mirror 2 to achieve the distance between the test subject and the vision chart presented by the plane mirror 2, which reduces the difficulty of adjustment and thus achieves the technical effect of improving the ease of use of the vision testing device. At the same time, in this embodiment, the position of the vision chart 1 does not need to be changed, that is, the medical staff does not need to follow the position of the vision chart 1 to indicate the test marks on the test line of the vision chart 1, thereby further improving the technical effect of improving the ease of use of the vision testing device.

[0063] In addition, combined Figure 2 As shown, in this embodiment, the mobile device 3 includes:

[0064] Drive structure 301;

[0065] The transmission structure 302 is connected to the drive structure 301. One side of the transmission structure 302 is connected to the plane mirror 2 and is used to drive the plane mirror 2 to move under the drive of the drive structure 301.

[0066] The drive structure 301 drives the transmission structure 302 to move, which in turn drives the plane mirror 2 to move, thereby adjusting the distance between the subject and the vision chart displayed on the plane mirror 2 without the need for manual adjustment, thus achieving the technical effect of improving the ease of moving the plane mirror 2.

[0067] Specifically, the drive structure 301 is rotatably connected to the transmission structure 302, and the drive structure 301 has an output shaft;

[0068] The transmission structure 302 includes:

[0069] The first rotating component 3021 is connected to the output shaft;

[0070] The second rotating member 3022 is arranged at an interval from the first rotating member 3021;

[0071] The transmission component 3023 is connected to both the first rotating component 3021 and the second rotating component 3022 on one side, and to the plane mirror 2 on the other side.

[0072] The drive structure 301 is a motor, the first rotating component 3021 is a first pulley, the second rotating component 3022 is a second pulley, and the transmission component 3023 is a belt. The first pulley is connected to the second pulley via the belt. The motor drives the first pulley to rotate, which in turn drives the second pulley to rotate via the belt, thus realizing the reciprocating rotation of the motor and the reciprocating transmission of the belt, further driving the plane mirror 2 along... Figure 2 The reciprocating movement along the X-axis is shown.

[0073] Specifically, in this embodiment, combined with Figure 2 As shown, the axis of the output shaft is set parallel to the Z-axis, so that the axes of the first rotating member 3021 and the second rotating member 3022 are also set parallel to the Z-axis.

[0074] In other embodiments, the axial direction of the output shaft can be set parallel to the Y-axis direction, so that the axial directions of the first rotating member 3021 and the second rotating member 3022 are also set parallel to the Y-axis direction.

[0075] Alternatively, the drive structure 301 can be a motor, the first rotating component 3021 can be a first gear, the second rotating component 3022 can be a second gear, and the transmission component 3023 can be a transmission chain. The transmission chain can be used to drive the plane mirror 2 along the X-axis direction.

[0076] In other embodiments, depending on the design of the vision testing device, the drive structure 301 and the transmission structure 302 are fixedly connected. For example, the drive structure 301 is an electric telescopic rod, and the transmission structure 302 is a transmission rod. By driving the linear movement of the transmission structure 302 through the drive structure 301, the distance between the test subject and the vision chart presented by the plane mirror 2 can also be adjusted. However, the electric telescopic rod requires additional... Figure 2 The dimension shown in the X-axis direction, compared to other embodiments, converts rotational motion into linear motion in this embodiment, without requiring additional... Figure 2 The dimensions along the X-axis are shown to reduce the space required for the vision testing device, thereby reducing the space limitations imposed by the vision testing device and improving its ease of use.

[0077] In addition, combined Figure 2 As shown, in this embodiment, the mobile device 3 includes:

[0078] The sliding structure 303 is connected between the transmission component 3023 and the plane mirror 2. The sliding structure 303 is used to drive the plane mirror 2 to slide as the transmission component 3023 rotates.

[0079] Based on this, driven by the sliding structure 303, the plane mirror 2 moves along the sliding structure 303. The sliding structure 303 can limit the plane mirror 2 to move only along the sliding structure 303. Figure 2 The mirror 2 moves back and forth along the X-axis as shown, thereby improving the stability of its movement.

[0080] Preferably, the plane mirror 2 can be connected to both the transmission component 3023 and the sliding structure 303, which can increase the number of connection points between the plane mirror 2 and the transmission component 3023, avoiding the plane mirror 2 from being unable to move due to the failure of one connection point, thereby improving the stability of the movement of the plane mirror 2 and thus achieving the technical effect of improving the reliability of the movement of the plane mirror 2.

[0081] Specifically, the sliding structure 303 includes:

[0082] Guide member 3031 is provided on one side of transmission member 3023;

[0083] Sliding member 3032 is slidably connected to guide member 3031, sliding member 3032 is fixedly connected to transmission member 3023, and sliding member 3032 is fixedly connected to plane mirror 2.

[0084] The sliding member 3032 is sleeved on the guide member 3031 to achieve a sliding connection between the sliding member 3032 and the guide member 3031. As the sliding member 3032 slides along the length direction of the guide member 3031, i.e. along the X-axis direction, along the transmission member 3023, the sliding member 3032 drives the plane mirror 2 to move only along the X-axis direction. This can limit the movement direction of the plane mirror 2 and achieve the technical effect of improving the stability of the movement of the plane mirror 2.

[0085] As an alternative implementation, the guide member 3031 may be provided with a groove extending along the X-axis, and the slider 3032 may be disposed in the groove and be able to slide along the groove.

[0086] Alternatively, the plane mirror 2 may be connected only to the sliding structure 303.

[0087] Of course, in other embodiments, the sliding structure 303 may not be provided.

[0088] In other embodiments, when two transmission structures 302 are provided, two sliding structures 303 are also provided. Specifically, in one transmission structure 302, the other side of the transmission member 3023 is connected to the eye chart 1, and in the other transmission structure 302, the other side of the transmission member 3023 is connected to the plane mirror 2. The slider 3032 of one sliding structure 303 can be connected between the transmission member 3023 and the eye chart 1, and the slider 3032 of the other sliding structure 303 can be provided between the transmission member 3023 and the plane mirror 2, which can also achieve the technical effect of improving the stability of the movement of the plane mirror 2 and the eye chart 1.

[0089] In addition, in this embodiment, the transmission component 3023 is provided with multiple visual acuity scales. When the moving device 3 moves the plane mirror 2 to a preset distance, the distance between the person being tested and the visual acuity chart presented by the plane mirror 2 corresponds one-to-one with the values ​​of the visual acuity scales. That is, the stopping position of the plane mirror 2 is preset each time, and the stopping position of the plane mirror 2 corresponds to the value of the visual acuity scale.

[0090] Of course, in other embodiments, the visual acuity of the person being tested can also be calculated based on the distance between the person being tested and the visual acuity chart presented by the plane mirror 2 when the moving device 3 moves the plane mirror 2 to a preset distance. Compared with other embodiments, in this embodiment, medical personnel directly read the visual acuity scale of the person being tested without having to convert it to obtain the visual acuity value, thereby achieving the technical effect of improving the ease of obtaining the visual acuity value of the person being tested.

[0091] Furthermore, in this embodiment, the moving device 3 includes a housing 304, which includes a receiving cavity. The transmission structure 302 and the sliding structure 303 are both disposed within the receiving cavity, and the housing 304 can protect the transmission structure 302 and the sliding structure 303. The housing 304 extends along... Figure 1 The upper surface shown has a groove that connects to the outside world. The sliding member 3032 passes through the groove and is connected to the plane mirror 2, so that the plane mirror 2 can move along the length of the groove and the movement direction of the plane mirror 2 can be limited.

[0092] Furthermore, in this embodiment, the visual acuity scale is set on the surface of the transmission component 3023, and the font of the visual acuity scale is set facing the direction of the person to be tested; when the moving device 3 drives the plane mirror 2 to move to a preset distance, the visual acuity scale closest to the person to be tested is the visual acuity value of the person to be tested.

[0093] Medical staff position themselves at position 1 on the eye chart to test the visual acuity of the person being tested. Since the person's visual acuity is below 0.1, the moving device 3 moves the plane mirror 2 to a preset distance, ensuring the person can see the opening of the test mark corresponding to a visual acuity of 0.1. The plane mirror 2 then stops moving; the visual acuity mark closest to the person at this point is their visual acuity. Specifically, the transmission component 3023 can be moved along... Figure 2 The right side is shown with a visual acuity scale. Based on this, medical personnel can read the visual acuity scale from the slot without moving, thus knowing the visual acuity value of the person being tested, thereby improving the ease of visual acuity testing.

[0094] Combination Figure 2 As shown, since the transmission shape of the transmission component 3023 is circular, there is a possibility that two vision scales may be closest to the subject when medical personnel read the vision scale. Preferably, a mark can be provided on the upper surface of the guide component 3031. When the plane mirror 2 stops moving, the vision scale closest to the subject and located on the same side as the mark is the subject's vision value. Based on this, it is not necessary to compare which vision scale is closest to the subject among multiple vision scales, thus achieving the technical effect of improving the accuracy of vision scale value reading.

[0095] As an alternative implementation, the surface of the guide 3031 may not be marked.

[0096] Of course, in other embodiments, the position of the visual acuity scale can be adjusted according to the different positions of the transmission component 3023.

[0097] In other embodiments, visual acuity scales can be marked on the housing 304, and the visual acuity scale corresponding to the position of the plane mirror 2 is the visual acuity value of the person being tested.

[0098] Of course, in other embodiments, when there are two moving devices 3, and the eye chart 1 and the plane mirror 2 move a preset distance, the distance between the person being tested and the eye chart presented by the plane mirror 2 corresponds one-to-one with the visual acuity scale. Each time the moving device 3 drives the eye chart 1 and the plane mirror 2 to move a preset distance.

[0099] Furthermore, the distance that the moving device 3 drives the plane mirror 2 to move each time is a preset value, which improves the ease of setting the preset distance of the moving device 3. Specifically, in this embodiment, the subject's brain is in contact with the eye chart 1. Based on the average distance between the human eye and the brain, which is 0.2m, the plane mirror 2 is at its farthest distance from the eye chart 1, which is 2.4m. This allows the distance between the subject and the eye chart presented by the plane mirror 2 to be adjusted to 5.0m. Furthermore, the moving device 3 drives the plane mirror 2 to move a distance of 0.25m each time, which is the preset value of 0.25m. Based on this, the distances between the plane mirror 2 and the visual acuity chart 1 are 2.6m, 2.35m, 2.1m, 1.85m, 1.6m, 1.35m, 1.1m, 0.85m and 0.6m, respectively. Correspondingly, the visual acuity scales are 0.1, 0.09, 0.08, 0.07, 0.06, 0.05, 0.04, 0.03 and 0.02, respectively.

[0100] Of course, in other embodiments, the subject to be tested can be spaced apart from the visual acuity chart 1, and the distance that the moving device 3 drives the plane mirror 2 to move each time can be adjusted according to the distance between the subject to be tested and the visual acuity chart 1.

[0101] In this embodiment, the side of the mobile device 3 can be fixed to a wall. Of course, in other embodiments, the mobile device 3 can also be placed on the ground. Compared with other embodiments, fixing the mobile device 3 to a wall in this embodiment can improve the visibility of the mobile device 3 and avoid the situation where the person being tested or other people are accidentally tripped by the mobile device 3. By limiting the position of the mobile device 3 in this embodiment, the technical effect of improving the safety of using the vision testing device can be achieved.

[0102] Furthermore, in this embodiment, the vision testing device includes:

[0103] The lifting structure, connected to the visual acuity chart 1, is specifically located at the bottom of the visual acuity chart 1 and is used to adjust the height of the test marks on the test row of the visual acuity chart 1 to be at the same height as the line of sight of the person being tested.

[0104] In this embodiment, the lifting structure can be an electrically operated telescopic push rod.

[0105] Based on this, medical staff use a lifting structure to drive the height of the test mark corresponding to a visual acuity value of 0.1 to be at the same height as the line of sight of the person being tested. When the person being tested can clearly see the opening direction of the test mark corresponding to 0.1, normal visual acuity testing is performed. That is, medical staff test the person being tested with test marks at different heights. The lifting structure drives the visual acuity chart 1 to place the test marks on the test row of the visual acuity chart 1 at the same height as the line of sight of the person being tested. This can improve the accuracy of the distance between the person being tested and the visual acuity chart presented by the plane mirror 2, thereby achieving the technical effect of improving the accuracy of visual acuity value testing.

[0106] As an alternative implementation method, the lifting structure can also be a hydraulic cylinder.

[0107] Of course, in other embodiments, the lifting structure may not be required.

[0108] In other embodiments, the distance that the moving device 3 drives the plane mirror 2 to move each time may be a preset value, or only a lifting structure may be provided.

[0109] In addition, in this embodiment, a button control device can be provided on the housing 304. The button control device includes a button unit and a control unit. The control unit is communicatively connected to the moving device 3. The button unit drives the control unit to control the movement of the moving device 3. That is, pressing the button unit once will cause the moving device 3 to move the plane mirror 2 a distance to a preset distance.

[0110] The control unit and the mobile device 3 can be connected via wired or wireless communication. This communication connection is a mature technology and will not be described in detail here.

[0111] Of course, in other embodiments, a remote control structure can also be provided, such as a remote controller. The remote control structure is equipped with a button control device, which can also realize the communication connection between the control unit and the mobile device 3. Medical staff can carry the remote control structure with them to drive the mobile device 3.

[0112] Furthermore, in this embodiment, the visual acuity chart 1 is equipped with an illumination structure. This illumination structure enhances the brightness of the visual acuity chart 1, preventing insufficient light from affecting the visual acuity test results, thereby improving the technical accuracy of visual acuity testing.

[0113] Furthermore, the light from the lighting structure is directed towards the visual chart 1; for example, the lighting structure can be positioned at... Figure 1 Above the visual acuity chart 1 shown, the light from the illumination structure shines downwards, and the direction of the light emitted from the illumination structure is perpendicular to the direction of the test subject's line of sight. This avoids the situation where the direction of the light emitted from the illumination structure is parallel to the direction of the test subject's line of sight, which could cause discomfort to the test subject.

[0114] Alternatively, the direction of light emission from the lighting structure can be adjusted as a variable implementation.

[0115] According to an embodiment of the present invention, another aspect is provided: a vision testing method is provided, which uses the above-described vision testing device to perform vision testing;

[0116] The subject is positioned between plane mirror 2 and visual acuity chart 1. Medical staff are positioned close to the subject, with the subject 5.0m away from the visual acuity chart displayed in plane mirror 2, and the subject's head can touch visual acuity chart 1.

[0117] Determine whether the person being tested can clearly see the largest test mark on visual acuity chart 1.

[0118] When the person being tested cannot clearly see the largest test mark on the visual acuity chart 1, the moving device 3 drives the plane mirror 2 to move until the person being tested can clearly see the largest test mark on the visual acuity chart 1. The largest test mark can be the test mark corresponding to a visual acuity value of 0.1.

[0119] Furthermore, previous vision testing methods also included determining whether a person could clearly see the largest test mark on visual acuity chart 1:

[0120] The lifting mechanism moves the visual acuity chart 1 up and down so that the height of the maximum test mark on the visual acuity chart 1 is at the same height as the line of sight of the person being tested.

[0121] After determining whether the subject can clearly see the largest test mark on visual acuity chart 1, subsequent visual acuity testing methods also include:

[0122] When the person being tested can clearly see the largest test mark on visual acuity chart 1, the lifting mechanism moves visual acuity chart 1 up and down so that the height of the test mark on the test line of visual acuity chart 1 is at the same height as the person being tested's line of sight.

[0123] Based on this, the height of the test marks on the test line of the visual acuity chart 1 can be made to be at the same height as the line of sight of the test subject, which can improve the accuracy of the distance between the test subject and the visual acuity chart presented by the plane mirror 2, thereby achieving the technical effect of improving the accuracy of the visual acuity test of the test subject.

[0124] The moving device 3 drives the plane mirror 2 to move until the person being tested can clearly see the largest test mark on the vision chart 1. Specifically, the moving device 3 drives the plane mirror 2 to move a preset distance each time.

[0125] Reading visual acuity values ​​specifically involves: when the person being tested can clearly see the largest test mark on the visual acuity chart 1, the medical staff reads the visual acuity scale closest to the person being tested via the transmission component 3023, which is the person's visual acuity value. Based on this, medical staff can read the visual acuity scale from their original position without needing to move, thus improving the ease of visual acuity testing.

[0126] Specifically, in combination Figure 3 As shown, the specific process of this vision testing method is as follows:

[0127] The subject is positioned with their brain tip aligned with the visual acuity chart 1. The subject is tested through the visual acuity chart presented by the plane mirror 2. Medical staff adjust the height of the visual acuity chart 1 using a lifting mechanism so that the height of the maximum test mark on the visual acuity chart 1 is at the same height as the subject's line of sight.

[0128] When the person being tested can clearly see the largest test mark on visual acuity chart 1, the lifting mechanism moves visual acuity chart 1 up and down so that the height of the test mark on the test line of visual acuity chart 1 is at the same height as the person being tested's line of sight, so that the person being tested can have their vision tested normally.

[0129] When the person being tested cannot see the largest test mark on visual acuity chart 1, the height of the largest test mark on visual acuity chart 1 is kept at the same height as the person's line of sight. The medical staff drives the plane mirror 2 to move closer to the person being tested through the moving device 3. The distance moved each time is 0.25m, until the person being tested can clearly see the opening direction of the test mark corresponding to a visual acuity value of 0.1.

[0130] Medical staff read the visual acuity scale that is closest to the test subject among multiple visual acuity scales. This visual acuity scale is the test subject's visual acuity value, thus completing the visual acuity test.

[0131] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A vision detection apparatus, characterized by, include: Visual acuity chart (1); A plane mirror (2) is spaced apart from the visual acuity chart (1). The imaging surface of the plane mirror (2) is positioned opposite to the visual acuity chart (1). The person to be tested is located between the visual acuity chart (1) and the plane mirror (2) and is used to perform visual acuity testing through the visual acuity chart presented by the plane mirror (2). A mobile device (3) is connected to both the visual acuity chart (1) and the plane mirror (2), or the mobile device (3) is connected to the plane mirror (2) to adjust the distance between the person being tested and the visual acuity chart presented by the plane mirror (2); the mobile device (3) is provided with multiple visual acuity scales, and when the mobile device (3) moves the visual acuity chart (1) and the plane mirror (2) a preset distance, or when the mobile device (3) moves the plane mirror (2) a preset distance, the interval between the person being tested and the visual acuity chart presented by the plane mirror (2) corresponds one-to-one with the value of the visual acuity scale.

2. The vision detection apparatus according to claim 1, characterized by The mobile device (3) includes: Drive structure (301); A transmission structure (302) is connected to the drive structure (301). One side of the transmission structure (302) is connected to the eye chart (1) and the plane mirror (2) and is used to drive the eye chart (1) and the plane mirror (2) to move under the drive of the drive structure (301). Alternatively, one side of the transmission structure (302) is connected to the plane mirror (2) and is used to drive the plane mirror (2) to move under the drive of the drive structure (301).

3. The vision detection apparatus according to claim 2, characterized by The drive structure (301) is rotatably connected to the transmission structure (302), and the drive structure (301) has an output shaft; The transmission structure (302) includes: The first rotating component (3021) is connected to the output shaft; The second rotating member (3022) is spaced apart from the first rotating member (3021); The transmission component (3023) is connected on one side to both the first rotating component (3021) and the second rotating component (3022), and on the other side to both the eye chart (1) and the plane mirror (2), or on the other side to the plane mirror (2).

4. The vision detection apparatus according to claim 3, characterized by The mobile device (3) includes: A sliding structure (303) is connected between the transmission member (3023) and the eye chart (1) and between the transmission member (3023) and the plane mirror (2). The sliding structure (303) is used to drive the eye chart (1) and the plane mirror (2) to slide as the transmission member (3023) rotates. Alternatively, the sliding structure (303) is connected between the transmission member (3023) and the plane mirror (2), and the sliding structure (303) is used to drive the plane mirror (2) to slide as the transmission member (3023) rotates.

5. The vision testing apparatus of claim 4, wherein, The sliding structure (303) includes: A guide member (3031) is provided on one side of the transmission member (3023); The sliding member (3032) is slidably connected to the guide member (3031), the sliding member (3032) is fixedly connected to the transmission member (3023), the sliding member (3032) is fixedly connected to the eye chart (1) and the plane mirror (2), or the sliding member (3032) is fixedly connected to the plane mirror (2).

6. The visual acuity detection apparatus according to any one of claims 3 to 5, characterized in that, Multiple vision scales are provided on the transmission component (3023).

7. The vision testing apparatus of claim 6, wherein, The visual acuity scale is located on the surface of the transmission component (3023), and the font of the visual acuity scale is oriented towards the person being tested; When the moving device (3) moves the eye chart (1) and the plane mirror (2) a preset distance, or when the moving device (3) moves the plane mirror (2) a preset distance, the eye scale closest to the subject of the test is the eye value of the subject of the test.

8. The vision detection apparatus according to any one of claims 1 to 5, characterized by Each time the moving device (3) drives the eye chart (1) and the plane mirror (2) to move a distance of a preset value, or each time the moving device (3) drives the plane mirror (2) to move a distance of a preset value.

9. The vision detection apparatus according to any one of claims 1 to 5, characterized by The vision testing device includes: A lifting structure is connected to the visual acuity chart (1) to adjust the height of the test marks on the test line of the visual acuity chart (1) to be at the same height as the line of sight of the person being tested.

10. The vision detection apparatus according to any one of claims 1 to 5, characterized by The vision chart (1) is equipped with an illumination structure.

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