Autonomous vision detection device

Abstract

The present application provides an autonomous vision detection device, comprising: a display module, configured to display a visual mark; an operation module, comprising a first interactive structure, which sends an adjustment instruction after being triggered, and the adjustment instruction includes the size information of the visual mark; a control module, which is respectively connected to the display module and the operation module in communication, and the control module is configured to receive the adjustment instruction, generate a visual mark corresponding to the size information, and control the display module to display the generated visual mark. In the autonomous vision detection device provided by the present application, the subject can gradually reduce or enlarge the visual mark displayed by the display module by triggering the first interactive structure until the direction of the visual mark can just not be clearly distinguished. Through the above process, the subject can complete the vision detection work autonomously. At the same time, the display module only displays one visual mark, and the direction of each visual mark is displayed randomly and without pattern. It can effectively prevent the subject from memorizing the visual mark in advance.

Description

Technical Field

[0001] The present application relates to the technical field of vision testers, and in particular to an autonomous vision test device. Background Art

[0002] The traditional vision testing process is for medical staff to select different "E" sight marks in the eye chart based on the vision of the person being tested. The person being tested stands at the standard examination distance and answers the direction of the "E" sight mark. The medical staff determines the person's vision value based on whether the answer is correct. Summary of the Invention

[0003] In view of this, the purpose of this application is to propose an autonomous vision detection device.

[0004] Based on the above-mentioned purpose, the present application provides an autonomous vision detection device, including: a display module, configured to display a visual mark; an operation module, including a first interaction structure, which sends an adjustment instruction after being triggered, and the adjustment instruction includes the size information of the visual mark; a control module, which is communicatively connected to the display module and the operation module respectively, and the control module is configured to receive the adjustment instruction, generate the visual mark corresponding to the size information, and control the display module to display the generated visual mark.

[0005] Furthermore, the operation module further includes a second interaction structure, and after the second interaction structure is triggered, the control module records the optotype information of the optotype currently displayed by the display module.

[0006] Furthermore, the visual mark information includes visual acuity count and eye type.

[0007] Furthermore, the operation module also includes a third interaction structure. When the third interaction structure is triggered, it sends a preset adjustment instruction to the control module. The control module generates a preset size sight mark and controls the display module to display the preset size sight mark.

[0008] Furthermore, the first interaction structure is a knob, and the knob is configured to be triggered by clockwise rotation or counterclockwise rotation.

[0009] Furthermore, it also includes a refraction unit, which is arranged in the visible light path emitted by the display module; the refraction unit includes at least one refraction mirror group along the propagation direction of the visible light, and the refraction mirror group includes: a first reflective lens, which is used to offset the propagation direction of the visible light entering the refraction mirror group; a reset reflective lens group, which is arranged at intervals on the reflection light path of the first reflective lens, and is used to restore the propagation direction of the visible light.

[0010] Furthermore, the propagation direction of the visible light is a first direction, and the direction perpendicular to the first direction is a second direction; the angle between the first reflective lens and the first direction is 45°; the reset reflective lens group includes a second reflective lens, a third reflective lens and a fourth reflective lens, the second reflective lens is arranged parallel to the first reflective lens along the second direction, the third reflective lens is arranged axially symmetrically with the second reflective lens along the first direction, and the fourth reflective lens is arranged parallel to the third reflective lens and axially symmetrically with the first reflective lens.

[0011] Furthermore, an eye shield is provided at the visible light emission position of the refraction unit, and the eye shield includes a light shielding plate and a driver, and the driver is used to drive the light shielding plate to move back and forth between a first position and a second position set horizontally; the driver is started after the second interactive structure is triggered.

[0012] Furthermore, an upper forehead pad is installed above the eye shield, and a height-adjustable lower forehead support is installed below the eye shield.

[0013] Furthermore, it also includes a data output module, which includes a printing device that is communicatively connected to the control module. After the second interactive structure is triggered for the second time, the printing device outputs the visual mark information stored this time and the visual mark information stored last time in the control module.

[0014] As can be seen from the above, the autonomous vision testing device provided by this application allows the subject to trigger the first interactive structure to gradually reduce or enlarge the visual mark displayed by the display module until the direction of the visual mark can no longer be clearly discerned. Through the above process, the subject can independently complete the vision test. At the same time, the display module only displays one visual mark, and the direction of each visual mark is displayed randomly and without any pattern. This can effectively prevent the subject from memorizing the visual mark in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A schematic three-dimensional diagram of an autonomous vision detection device according to an embodiment of the present application;

[0017] Figure 2 A side perspective schematic diagram of an autonomous vision detection device according to an embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the system principle of the autonomous vision detection device according to an embodiment of the present application;

[0019] Figure 4 Schematic diagram of a first interaction structure and a second interaction structure of an autonomous vision detection device according to an embodiment of the present application;

[0020] Figure 5 A schematic diagram of a refractive index unit of an autonomous vision detection device according to an embodiment of the present application;

[0021] Figure 6 A schematic diagram of the light shielding plate of the autonomous vision detection device according to an embodiment of the present application being located in a first position;

[0022] Figure 7 This is a schematic diagram of the shading plate of the autonomous vision detection device according to an embodiment of the present application being located in the second position.

[0023] Description of reference numerals:

[0024] 1. Display module; 1-1. Visible light path;

[0025] 2. Operation module; 2-1. First interaction structure; 2-2. Second interaction structure; 2-3. Third interaction structure; 2-4. Forehead support adjustment button;

[0026] 3. Control module;

[0027] 4. Refraction unit; 4-1. Refraction mirror group; 4-1-1. First reflective lens; 4-1-2. Repositioning reflective lens group; 4-1-2-1. Second reflective lens; 4-1-2-2. Third reflective lens; 4-1-2-3. Fourth reflective lens;

[0028] 5. Eye shield; 5-1. Shading plate; 5-1-1. Rack; 5-2. Driver; 5-2-1. Gear; 5-3. First position; 5-4. Second position;

[0029] 6. Forehead sticker;

[0030] 7. Forehead support;

[0031] 8. Data output module;

[0032] 9. Housing; 9-1. Optical path platform; 9-2. Forehead sticker fixing bracket;

[0033] 10. Subject; 10-1. Eye to be examined;

[0034] 11. Power module. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0036] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] In the process of visiting an ophthalmology clinic, vision test is the first step. As mentioned in the background technology section, the traditional vision test process requires the use of an eye chart. The two most commonly used eye charts in China are the "Standard Logarithmic Eye Chart" and the "International Standard Eye Chart". The increase rate between the visual marks in each row of the "Standard Logarithmic Eye Chart" is a geometric series, that is, a common ratio. Increase, take the logarithm of this increase rate 0.1 (Note: lg =0.1) is the tolerance for visual acuity. The International Standard Visual Acuity Chart specifies that V = 1 / a represents visual acuity, where a represents the visual angle (in minutes) formed by a single stroke of the sight mark at the nodal point at the standard examination distance (five or six meters).

[0038] Both of the above-mentioned vision charts are designed according to the principle of visual angle. They are composed of "E" sight marks (hereinafter referred to as sight marks) of different sizes and directions. They are arranged from top to bottom according to the size of the characters, representing a visual acuity gradient of 0.1-1.5, and the inspection distance is five meters.

[0039] A normal person should be able to recognize the tenth row of sight marks at five meters, with a visual acuity of 1.0 (5.0).

[0040] Clinically, a distance vision chart is often used for testing. The chart is placed five meters in front of the subject, with the 5.0 (1.0) sight mark on the chart at the same height as the subject's eyes. The chart is hung five meters in front of the subject's eye (node) (the standard distance for a distance vision chart). This requires a relatively large space for vision testing, placing high demands on the venue.

[0041] In addition, there are many problems in the traditional vision testing process:

[0042] First, if the examinee 10 cannot recognize the sight mark on the first row of the eye chart at a distance of five meters, they need to gradually approach the chart until they can recognize the sight mark. The nurse then records the visual acuity count based on the examinee's walking position. If the examinee still cannot recognize the largest characters at a distance of one meter, they need to identify the number of fingers on the doctor's fingers. If the fingers are still not recognizable when they are in front of their eyes, they need to measure whether their hands are wiggling. If they cannot recognize the movement of their hands in front of their eyes, they need to check for light perception in a dark room. However, in actual operation, most examinees 10 with a visual acuity of less than 0.1 have difficulty in moving, and relying on only one eye with poor vision (the other eye is blocked) to move forward can easily lead to falls and other dangers.

[0043] Secondly, since the orientation and arrangement of the visual marks on the eye chart are fixed and publicly displayed, there is a possibility that test candidates (i.e. those who will be waiting for vision testing) will memorize the orientation of the visual marks on the eye chart in advance while waiting, resulting in deviations in the actual test results.

[0044] Third, the other non-test eye is usually covered by a cover held by the subject 10, which often results in incomplete cover or peeking with the covered eye, leading to deviations in the test results.

[0045] Fourthly, the visual acuity test results are recorded by nurses in handwriting, which may lead to errors in recording eye types.

[0046] Fifth, the International Standard Eye Chart suffers from uneven visual acuity scale increments. For example, while the visual acuity scales of 0.1-0.2 and 0.9-1.0 appear in adjacent rows, the 0.1 scale is double the 0.2 scale, while the 0.9 scale is only 0.1 times the 1.0 scale. This unevenness hinders visual acuity statistics and assessment. Furthermore, visual acuity changes in an arithmetic progression, while visual angle changes in a harmonic progression. Therefore, the harmonic mean can be used, but this underestimates the average ability of the examinee.

[0047] Sixth, when the person being examined orally describes the direction of the visual mark, his or her vision condition can be easily obtained by other people around him or her, posing a risk of privacy leakage.

[0048] Seventh, when the patient is sitting for vision testing, the vision test results may be inaccurate due to the front-to-back deviation of the sitting position and the non-fixed position of the 10-1 node of the eye being tested to the vision chart.

[0049] Eighth, visual acuity can be expressed in various ways: fractional (20 / 20), decimal (1.0), logMAR (also known as logarithmic) (0.1), and 5-point (5.0). While conversions between these different expressions can be performed using functional equations, this is inconvenient. In particular, if one wishes to utilize the visual acuity test results of the subject 10 for scientific research, the results must be recorded in logarithmic or 5-point format.

[0050] With the advancement of technology, several types of vision devices have appeared on the market, but some problems have been found after clinical use:

[0051] In a projection vision instrument, if the subject 10 has a vision lower than 0.1 and needs to walk forward, the subject's head often blocks the projector light source, affecting the projection and examination quality, and also prolonging the examination time. Furthermore, there is the aforementioned risk of the subject 10 falling while walking due to poor vision.

[0052] In the case of a voice recognition vision instrument, the subject 10 is required to verbally state the direction of the sight mark during the test, and the software recognizes it. However, there are cases where the voice recognition is unclear, which affects the recording of the results. In addition, if the subject 10 is unable to speak, this type of vision instrument is not suitable.

[0053] During a remote-controlled eye test, the subject 10 automatically presses buttons on the remote control to indicate the direction of the sight mark. The eye tester adjusts the size of the displayed sight mark based on the response, determining the minimum sight mark that the subject 10 can clearly see. However, some elderly people may not be able to use the remote control, and some people with extremely low vision may not be able to clearly see the remote control buttons, thus affecting the accuracy of the test.

[0054] In view of this, if Figure 1 、 Figure 2 and Figure 3 As shown, the autonomous vision detection device provided in this embodiment includes: a display module 1, which is configured to display a visual mark; an operation module 2, which includes a first interaction structure 2-1, and sends an adjustment instruction after the first interaction structure 2-1 is triggered, and the adjustment instruction includes the size information of the visual mark; a control module 3, which is respectively communicated with the display module 1 and the operation module 2, and the control module 3 is configured to receive the adjustment instruction, generate a visual mark corresponding to the size information, and control the display module 1 to display the generated visual mark.

[0055] Optionally, the display module 1 is an LCD display (liquid crystal display) or a CRT display (picture tube display).

[0056] Optionally, the control module 3 realizes communication connection with the display module 1 and the operation module 2 through lora, Bluetooth, WiFi or Zigbee communication device.

[0057] The autonomous vision detection device also includes a power supply module 11, which is used to provide a constant voltage and frequency uninterruptible power supply to the display module 1, the operation module 2, the control module 3 and other electric drive devices in the embodiment through an energy storage battery or an external AC power supply.

[0058] Optionally, the control module 3 is an STM32 microcontroller. It mainly parses and processes the key signals or other forms of adjustment instructions sent by the operation module 2, converts them into pre-edited matching control instructions according to the workflow defined in the software design process, transmits them to the display module 1 via Bluetooth wireless communication technology, and controls the display system in the display module 1 to make corresponding displays.

[0059] Control module 3 is equipped with detection software. The detection software design primarily involves programming rules for switching sight mark images within the first interactive structure 2-1. The detection software installed in the embodiment can be divided into two categories based on its functional modules: one for detecting near and far vision intensity, and the other for other functional modules.

[0060] Taking the example of using this embodiment to detect the degree of far and near vision, the far and near vision detection section can be roughly divided into four parts, which are: obtaining random numbers, image switching, image judgment, and error judgment.

[0061] Before use, the optotypes included in the entire International Standard Logarithmic Vision Chart (GB11533-2011) are regularly disassembled according to size and stored in the control module 3. At the same time, optotypes of different sizes are paired with trigger events of the first interactive structure 2-1, so that after the first interactive structure 2-1 is triggered by different triggers, the control module 3 can generate optotypes of fixed size and random orientation that match the trigger event.

[0062] Specifically, in the eye chart, there is a row of optotypes of the same size, and the control module 3 generates an optotype randomly selected from the row of the size that matches the trigger event.

[0063] like Figure 3 During a vision test, subject 10 triggers first interaction structure 2-1. Based on the triggering event, operation module 2 generates and sends an adjustment instruction, including optotype size information, to control module 3. Upon receiving the adjustment instruction, control module 3 generates an optotype of a matching size based on the size information contained in the adjustment instruction and controls display module 1 to display the generated optotype. Subject 10 observes the generated optotype. If the optotype is clearly visible, the operation module 2 is triggered again to generate a smaller optotype until the optotype becomes unreadable. At this point, the subject's 10 vision level is determined.

[0064] In the autonomous vision testing device provided in this embodiment, the subject 10 can trigger the first interactive structure 2-1 to gradually reduce or enlarge the optotype displayed by the display module 1 until the optotype's orientation is just barely discernible. Through this process, the subject 10 can autonomously complete the vision test. Furthermore, the display module 1 only displays one optotype, and the orientation of each optotype is displayed randomly and without pattern. This effectively prevents the subject from memorizing the optotype in advance.

[0065] like Figure 1 、 Figure 2 and Figure 4 As shown, in some embodiments, the operation module 2 further includes a second interaction structure 2 - 2 . After the second interaction structure 2 - 2 is triggered, the control module 3 records the visual mark information of the visual mark currently displayed by the display module 1 .

[0066] When the subject 10 triggers the first interactive structure 2-1 to shrink the visual mark on the display module 1 to the limit of what he can see clearly, the second interactive structure 2-2 is triggered, causing the control module 3 to record the visual mark information of the current visual mark. This visual mark information is the vision level of the subject's eye 10-1, that is, the vision test result.

[0067] In addition to being stored in the control module 3 , the sight mark information can also be sent to a server or other device with information storage function that is connected to this embodiment by wire or wirelessly to generate an electronic medical record or file of the subject 10 .

[0068] Optionally, the optotype information can be completely displayed on the display module 1 synchronously with the optotype; it can also be partially displayed, such as displaying only the eye information; or the optotype information can be not displayed.

[0069] By not displaying or partially displaying the optotype information, neither the subject 10 nor the testee can obtain real-time information about the visual acuity of the eye 10 - 1 being tested before the final result is output. This reduces the psychological pressure on the subject 10 during the test, reduces the possibility of cheating (such as guessing the optotype direction or peeking with both eyes), and ensures the reliability of the test results. It also helps protect the privacy of the subject 10.

[0070] In some embodiments, the optotype information includes visual acuity count and eye type.

[0071] Optionally, the sight mark information also includes time information, testing location information, tested person status information or other information to facilitate future tracing.

[0072] Optionally, visual acuity can be recorded in logarithmic and 5-point formats.

[0073] Of course, vision counting can also include fractional recording and decimal recording, and the conversion between the various recording modes is realized by the control module 3 according to the function stored therein, thus eliminating the need for manual conversion.

[0074] Eye information, including "OD" for right eye vision and "OS" for left eye vision.

[0075] After the subject 10 triggers the second interaction structure 2-2, the test of one eye 10-1 is complete. After recording the current optotype information, the control module 3 automatically switches the "OD" or "OS" in the current eye information to the other, preparing for the test of the other eye 10-1.

[0076] like Figure 1 and Figure 2 In some embodiments, the operation module 2 further includes a third interaction structure 2-3. After the third interaction structure 2-3 is triggered, a preset adjustment instruction is sent to the control module 3. The control module 3 generates a preset size sight mark and controls the display module 1 to display the preset size sight mark.

[0077] Optionally, the preset size sight mark is a 0.1 sight mark facing a random direction.

[0078] After the subject 10 completes the vision test for the current eye 10-1 or both eyes, the subject 10 or the equipment administrator triggers the third interaction structure 2-3 to reset the system of this embodiment. The control module 3 regenerates the preset size optotype and displays it on the display module 1, preparing for the vision test of the next eye 10-1 of the same subject 10 or the next subject 10.

[0079] like Figure 1 、 Figure 2 and Figure 4 As shown, the first interaction structure 2 - 1 is a knob, which is configured to be triggered by rotating clockwise or counterclockwise.

[0080] like Figure 4 Optionally, the second interactive structure 2-2 is a confirmation button or a knob button integrated with the first interactive structure 2-1. Figure 1 and Figure 2 , the third interactive structure 2-3 is a reset button.

[0081] The knob is divided into 23 positions, meaning 23 trigger events occur during each rotation. These 23 positions or trigger events correspond to visual acuity readings ranging from 0.01 to 2.0 (logarithmic recording). The sight mark size increases and decreases evenly in a geometric progression according to national standard GB11533-2011, preventing uneven sight mark increments.

[0082] In addition, since the range of change of the visual mark in this embodiment is 0.01 to 2.0, even if the visual acuity of the subject 10 is lower than 0.1, there is no need to get up and move. Just rotate the knob to continue to increase the visual mark displayed on the display module 1. This can effectively prevent people with limited mobility or low vision from falling and other dangerous situations when moving forward.

[0083] certainly, Figure 4 The gear values ​​are only used to more clearly express the assignment interval and arrangement order of each gear, and do not represent the fixed position of each gear.

[0084] During the vision test, the subject 10 simply rotates the knob clockwise or counterclockwise to gradually enlarge or reduce the sight mark on the display module 1. When the displayed sight mark reaches the subject's 10 vision limit, pressing the knob button (or confirmation button) completes the recording of the test result. Throughout the test process, the subject 10 does not need to interact verbally with medical assistants or the test equipment. This not only prevents the test results from being affected by the test equipment's sound recognition accuracy, but also reduces the error rate due to its simple operation (only one rotary button is required throughout the test process). This embodiment is suitable for the elderly, those who cannot speak, or those with extremely low vision.

[0085] like Figure 2 and Figure 5 As shown, some embodiments further include a refraction unit 4, which is arranged in the visible light path 1-1 emitted by the display module 1; the refraction unit 4 includes at least one refraction mirror group 4-1 along the propagation direction of the visible light, and the refraction mirror group 4-1 includes: a first reflective lens 4-1-1, which is used to offset the propagation direction of the visible light entering the refraction mirror group 4-1; and a reset reflective lens group 4-1-2, which is arranged at intervals on the reflection light path of the first reflective lens 4-1-1, and is used to restore the propagation direction of the visible light.

[0086] The standard distance is simulated by an optical path designed based on the principles of mirror reflection imaging and image distance. The visible light emitted by the display module 1 is deflected by a certain distance through the refracting mirror assembly 4-1 and then restored to the original visible light path 1-1. This effectively reduces the linear physical distance between the display module 1 and the eye to be inspected 10-1, thereby reducing the footprint of this embodiment and lowering the requirements for the operating environment.

[0087] like Figure 5 As shown, in some embodiments, the visible light propagation direction is a first direction ( Figure 5 The direction perpendicular to the first direction is the second direction ( Figure 5The first reflector 4-1-1 forms an angle of 45° with the first direction; the reset reflector group 4-1-2 includes a second reflector 4-1-2-1, a third reflector 4-1-2-2, and a fourth reflector 4-1-2-3. The second reflector 4-1-2-1 is arranged parallel to the first reflector 4-1-1 along the second direction, the third reflector 4-1-2-2 is arranged axially symmetrically with the second reflector 4-1-2-1 along the first direction, and the fourth reflector 4-1-2-3 is arranged parallel to the third reflector 4-1-2-2 and axially symmetrically with the first reflector 4-1-1.

[0088] by Figure 5 Taking the structure shown in FIG. 1 as an example, the refraction unit 4 is described.

[0089] Visible light emitted by display module 1 travels a distance L1 along visible light path 1-1 before entering the first refraction mirror set 4-1 of refraction unit 4. Reflected by the first reflector lens 4-1-1, the visible light changes its original propagation direction and continues to propagate in the second direction. After traveling a distance H1, it is reflected by the second reflector lens 4-1-2-1, returning to the first direction. After traveling a distance L2, it is reflected by the third reflector lens 4-1-2-2, changing its direction of propagation to a direction perpendicular to visible light path 1-1. Finally, after traveling a distance H2, it is reflected by the fourth reflector lens 4-1-2-3, returning to visible light path 1-1.

[0090] Figure 5 In the illustrated embodiment, the refraction unit 4 includes three refraction mirror groups 4-1. Visible light travels a distance L3 from the first refraction mirror group 4-1 before entering the second refraction mirror group 4-1. After exiting the last refraction mirror group 4-1, it travels a distance L4 before entering the subject's eye 10-1. In the refraction mirror group 4-1, the distance L2 is 0.1 meters, and the distances H1 and H2 are both 0.3 meters.

[0091] In addition, the refraction unit 4 may be of an open structure, and a light source may be used to apply uniform and stable illumination light to the refraction unit 4 to ensure that the vision test result is not affected by uneven brightness within the refraction unit 4 .

[0092] like Figure 1 、 Figure 2 、 Figure 6 and Figure 7 As shown, in some embodiments, an eye shield 5 is further provided at the visible light emission position of the refractive unit 4. The eye shield 5 includes a light shielding plate 5-1 and a driver 5-2. The driver 5-2 is used to drive the light shielding plate 5-1 to move back and forth between a first position and a second position set horizontally; the driver 5-2 is started after the second interactive structure 2-2 is triggered.

[0093] like Figure 1 and Figure 2 This embodiment further includes a housing 9, with an optical path platform 9-1 disposed on top thereof for placing the refractive unit 4. The display module 1 is vertically mounted on one end of the optical path platform 9-1, and the eye shield 5 is mounted on the other end. The first interactive structure 2-1, the second interactive structure 2-2, and the third interactive structure 2-3 are all located on one side of the housing 9 below the optical path platform 9-1.

[0094] like Figure 6 and Figure 7 The eye occluder 5 is horizontally spaced apart and has adjacent first and second positions 5-3 and 5-4. When the subject 10 approaches the eye occluder 5, their left eye is located in the first position 5-3 and their right eye is located in the second position 5-4. The eye occluder 5 is provided with a guide structure that supports the light shielding plate 5-1, allowing the light shielding plate 5-1 to reciprocate between the first position 5-3 and the second position 5-4 under the action of an external force.

[0095] Specifically, since the light shielding sheet 5-1 is made of an opaque material, it has two states when in use: a first blocking position 5-3 and a second blocking position 5-4. That is, when the subject 10 is testing the left eye vision, the light shielding sheet 5-1 is located at the second position 5-4 to block the right eye of the subject 10. Figure 7 Similarly, when the subject 10 detects the right eye vision, the light shielding sheet 5-1 is located at the first position 5-3, for shielding the left eye of the subject 10, such as Figure 6 .

[0096] by Figure 6 and Figure 7 Taking the illustrated structure as an example, the driver 5-2 is a motor, with a gear 5-2-1 mounted on its output shaft. The light shielding plate 5-1 is mounted on a rack 5-1-1 that meshes with the gear. As can be seen from the foregoing, when the second interaction structure 2-2 is triggered, the control module 3 determines that the current eye 10-1 under examination has completed the vision test. While switching the eye information, the control module 3 activates the driver 5-2. The driver 5-2 moves the light shielding plate 5-1 to a new position via the transmission structure formed by the gear 5-2-1 and the rack 5-1-1. This process aligns the eye information in the control module 3 system with the light-transmitting position of the eye shield 5.

[0097] At the same time, the subject 10 does not need to cover his eyes with his hands or a self-held covering object during the vision test.

[0098] like Figure 1 and Figure 2 As shown, in some embodiments, an upper forehead patch 6 is installed above the eye shield 5, and a height-adjustable lower forehead support 7 is installed below the eye shield 5.

[0099] The housing 9 also includes a forehead patch holder 9-2. Optionally, the forehead patch holder 9-2 is strip-shaped, with its center located above the front side of the eye shield 5 (the side closest to the subject 10) and fitted with the forehead patch 6. Both ends are fixedly connected to the housing 9. A lower forehead support 7 is located below the eye shield 5 and vertically aligned with the forehead patch 6. The housing 9 also includes a lower forehead support adjustment button 2-4 for controlling the upward and downward movement of the lower forehead support 7.

[0100] Before the vision test, subject 10 approaches eye shield 5, aligns their left and right eyes with first position 5-3 and second position 5-4, respectively, and places their forehead against forehead pad 6. Afterwards, they adjust the height of forehead support 7, either independently or through the equipment management, until it abuts against subject 10's lower jaw, effectively supporting and limiting the head's position.

[0101] The upper forehead sticker 6 and the height-adjustable lower forehead rest 7 ensure the detection distance between the node of the inspected eye 10-1 and the display module 1, as well as the distance between the inspected eye 10-1 and the eye occluder 5, thereby ensuring the reliability of the obtained vision test results and avoiding the possibility of peeking due to incomplete occlusion of the non-inspected eye 10-1. In addition, the above structure makes this embodiment suitable for people with different facial contours.

[0102] like Figure 1 and Figure 2 As shown, in some embodiments, the autonomous vision detection device also includes a data output module 8, and the data output module 8 includes a printing device that is communicatively connected to the control module 3. After the second interactive structure 2-2 is triggered for the second time, the printing device outputs the visual mark information stored this time and the visual mark information stored last time in the control module 3.

[0103] Optionally, the printing device is a thermal printer.

[0104] After the second interaction structure 2-2 is triggered for the first time, the control module 3 determines that the vision test of the subject's first eye 10-1 is complete, records the optotype information for that eye, and prepares to test the second eye. After the second interaction structure 2-2 is triggered for the second time, the control module 3 determines that the vision test of the subject's second eye 10-1 is also complete and records the optotype information for that eye, indicating that the vision test for the subject's 10 has been completed. Thereafter, the control module 3 outputs the optotype information for both eyes 10-1 as paper results via a printing device and provides them to the subject 10.

[0105] Since the vision test results of this embodiment are automatically recorded and printed by the control module 3, information recording errors due to manual recording, especially errors in eye recording, are avoided.

[0106] The process of performing vision testing using the aforementioned embodiments is as follows:

[0107] Step 1: The head of the subject 10 is fixed to the front side of the eye shield 5 by adjusting the lower forehead support 7, and the two eyes 10-1 are aligned with the first position 5-3 and the second position 5-4 respectively.

[0108] In step 2, the subject 10 observes the visual mark displayed by the display module 1 through the eye occluder 5 and the refraction unit 4 in sequence.

[0109] Step three: the subject 10 adjusts the size of the optotype displayed by the display module 1 through the first interactive structure 2 - 1 in the operation module 2 until the limit optotype that the subject's eye 10 - 1 can see is obtained.

[0110] In step 4, the subject 10 triggers the second interactive structure 2 - 2 in the operating module 2 to record the optotype information of the current optotype and switch the position of the light shielding plate 5 - 1 .

[0111] Step 5: Repeat steps 2 and 3 to obtain the test results through the data output module.

[0112] Step six: trigger the third interactive structure 2-3 to make the display module 1 display the preset size sight mark again.

[0113] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0114] In addition, to simplify the description and discussion, and to avoid obscuring the understanding of the embodiments of the present application, well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided figures. Furthermore, devices may be shown in block diagram form to avoid obscuring the understanding of the embodiments of the present application, and this also takes into account the fact that the implementation details of these block diagram devices are highly dependent on the platform on which the embodiments of the present application will be implemented (i.e., these details should be fully understood by those skilled in the art). Where specific details (e.g., circuits) are set forth to describe the exemplary embodiments of the present application, it will be apparent to those skilled in the art that the embodiments of the present application can be implemented without these specific details or with variations therefrom. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0115] Although the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may utilize the discussed embodiments.

[0116] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. An autonomous vision detection device, characterized in that: include: A display module configured to display a sight mark; An operation module, comprising a first interaction structure, wherein the first interaction structure sends an adjustment instruction after being triggered, wherein the adjustment instruction includes size information of the sight mark; a control module, respectively connected to the display module and the operation module for communication, the control module being configured to receive the adjustment instruction, generate the optotype corresponding to the size information, and control the display module to display the generated optotype; The operation module further includes a second interaction structure. When the examinee triggers the first interaction structure to reduce the sight mark on the display module to the limit of what he can see clearly, the second interaction structure is triggered to make the control module record the sight mark information of the current sight mark. The sight mark information is the vision level. The first interactive structure is a knob, and the knob is configured to gradually change the size of the sight mark displayed by the display module by rotating; The second interactive structure is a knob button integrated with the first interactive structure. When the displayed sight mark reaches the visual limit of the subject, the recording of the sight mark information can be completed by pressing the knob button.

2. The autonomous vision detection device according to claim 1, characterized in that: The visual mark information includes visual acuity count and eye type.

3. The autonomous vision detection device according to claim 1, characterized in that: The operation module further includes a third interaction structure. When the third interaction structure is triggered, it sends a preset adjustment instruction to the control module. The control module generates a preset size optotype and controls the display module to display the preset size optotype.

4. The autonomous vision detection device according to claim 1, characterized in that: The knob is configured to be activated by rotating clockwise or counterclockwise.

5. The autonomous vision detection device according to claim 1, characterized in that: It also includes a refraction unit, which is arranged in the visible light path emitted by the display module; the refraction unit includes at least one refraction mirror group along the visible light propagation direction, and the refraction mirror group includes: A first reflective lens, used for deflecting the propagation direction of the visible light entering the folding lens group; The reset reflective lens group is arranged at intervals on the reflective light path of the first reflective lens and is used to restore the propagation direction of the visible light.

6. The autonomous vision detection device according to claim 5, characterized in that: The visible light propagation direction is a first direction, and a direction perpendicular to the first direction is a second direction; the angle between the first reflective lens and the first direction is 45°; The reset reflective lens group includes a second reflective lens, a third reflective lens and a fourth reflective lens. The second reflective lens is arranged parallel to and spaced apart from the first reflective lens along the second direction. The third reflective lens is arranged axially symmetrically to the second reflective lens along the first direction. The fourth reflective lens is arranged parallel to the third reflective lens and axially symmetrically to the first reflective lens.

7. The autonomous vision detection device according to claim 5, characterized in that: An eye shield is also provided at the visible light emission position of the refraction unit, and the eye shield comprises a light shielding sheet and a driver, and the driver is used to drive the light shielding sheet to reciprocate between a first position and a second position which are horizontally arranged; The driver is activated after the second interaction structure is triggered.

8. The autonomous vision detection device according to claim 7, characterized in that: An upper forehead sticker is installed above the eye shield, and a height-adjustable lower forehead support is installed below the eye shield.

9. The autonomous vision detection device according to claim 1, characterized in that: It also includes a data output module, which includes a printing device that is communicatively connected to the control module. After the second interactive structure is triggered for the second time, the printing device outputs the visual mark information stored this time and the visual mark information stored last time in the control module.

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