CN220403978U - Autonomous vision detecting device - Google Patents

Abstract

The application provides an autonomous vision testing device comprising: a control module configured to generate a visual target; an operation module, in communication with the control module, comprising a first interaction structure configured to adjust the size of the optotype generated by the control module; and the display module is in communication connection with the control module and is configured to display the optotype generated by the control module. According to the autonomous vision detection device, the examinee can gradually shrink or enlarge the optotype displayed by the display module by triggering the first interaction structure until the direction of the optotype can not be clearly distinguished. Through the process, the examinee can autonomously complete vision testing work. Meanwhile, the display module only displays one sighting target, and the direction of each sighting target is randomly displayed and irregular. Can effectively avoid the pre-memorizing of the optotype by the testee.

Description

Autonomous vision detecting device

Technical Field

The application relates to the technical field of vision testers, in particular to an autonomous vision tester.

Background

The traditional vision testing process is that a medical staff selects 'E' optotypes with different directions in an eye chart according to the vision condition of a tested person, the tested person stands at a standard testing distance, answers the directions of the 'E' optotypes, and the medical staff determines the vision value of the tested person according to whether the answers are correct.

Disclosure of Invention

In view of this, an object of the present application is to propose an autonomous vision testing device.

Based on the above object, the present application provides an autonomous vision testing device comprising: a control module configured to generate a visual target; an operation module, in communication with the control module, comprising a first interaction structure configured to adjust the size of the optotype generated by the control module; and the display module is in communication connection with the control module and is configured to display the optotype generated by the control module.

Further, the first interactive feature is a knob configured to adjust the optotype size by rotating clockwise or counterclockwise.

Further, the operation module further includes a second interaction structure configured to control the control module to store the optotype information of the optotype.

Further, the operation module further includes a third interaction structure configured to control the control module to generate the optotype of a preset size.

Further, the display module also comprises a refraction unit which is arranged in a visible light path emitted by the display module; the refraction unit includes at least one refraction lens group along the visible light propagation direction, the refraction lens group including: a first reflection sheet for shifting a propagation direction of the visible light entering the refractive lens group; and the reset reflector plate groups are arranged on the reflecting light path of the first reflector plate at intervals and used for reducing the propagation direction of the visible light.

Further, the visible light propagation direction is a first direction, and a direction perpendicular to the first direction is a second direction; the included angle between the first reflecting lens and the first direction is 45 degrees; the reset reflector plate group comprises a second reflector plate, a third reflector plate and a fourth reflector plate, wherein the second reflector plate is arranged in parallel with the first reflector plate along the second direction, the third reflector plate is arranged in axisymmetric with the second reflector plate along the first direction, and the fourth reflector plate is arranged in parallel with the third reflector plate and is arranged in axisymmetric with the first reflector plate.

Further, an eye shielding device is further arranged at the visible light emergent position of the refraction unit, the eye shielding device comprises a shielding sheet and a driver, and the driver is used for driving the shielding sheet to reciprocate between a first position and a second position which are horizontally arranged; the second interaction structure is triggered to activate the driver.

Further, an upper forehead patch is arranged above the eye shielding device, and a lower forehead support with adjustable height is arranged below the eye shielding device.

Further, the utility model also comprises a shell, wherein the shell is provided with a strip-shaped forehead patch fixing frame, the forehead patch is fixed in the middle of the forehead patch fixing frame, and two ends of the forehead patch fixing frame are respectively and fixedly connected with two sides of the shell; the lower forehead support is arranged opposite to the upper forehead patch.

Further, the system also comprises a data output module, wherein the data output module comprises a printing device which is in communication connection with the control module and is configured to output the sighting target information stored by the control module.

From the above, the autonomous vision testing device provided by the present application can gradually reduce or enlarge the optotype displayed by the display module by triggering the first interaction structure until the orientation of the optotype is just not clearly distinguished. Through the process, the examinee can autonomously complete vision testing work. Meanwhile, the display module only displays one sighting target, and the direction of each sighting target is randomly displayed and irregular. Can effectively avoid the pre-memorizing of the optotype by the testee.

Drawings

In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.

Fig. 1 is a schematic perspective view of an autonomous vision testing device in accordance with an embodiment of the present application;

FIG. 2 is a schematic side perspective view of an autonomous vision testing device in accordance with an embodiment of the present application;

FIG. 3 is a schematic diagram of the system principle of the autonomous vision testing device according to the embodiment of the present application;

FIG. 4 is a schematic diagram of a first interactive configuration and a second interactive configuration of an autonomous vision testing device in accordance with an embodiment of the present application;

FIG. 5 is a schematic diagram of a refractive unit of an autonomous vision testing device in accordance with an embodiment of the present application;

FIG. 6 is a schematic view of a light shielding sheet of an autonomous vision testing device according to an embodiment of the present application in a first position;

fig. 7 is a schematic view of a light shielding sheet of an autonomous vision testing device in a second position according to an embodiment of the present application.

Reference numerals illustrate:

1. a display module; 1-1, a visible light path;

2. an operation module; 2-1, a first interaction structure; 2-2, a second interaction structure; 2-3, a third interaction structure; 2-4, lower forehead support adjusting keys;

3. a control module;

4. a refraction unit; 4-1, a refractive lens group; 4-1-1, a first mirror plate; 4-1-2, a resetting reflector group; 4-1-2-1, a second reflector plate; 4-1-2-2, a third reflective lens; 4-1-2-3, a fourth reflector;

5. an eye shield; 5-1, a shading sheet; 5-1-1, a rack; 5-2, a driver; 5-2-1, gears; 5-3, a first position; 5-4, a second position;

6. attaching the forehead;

7. a forehead support;

8. a data output module;

9. a housing; 9-1, a light path platform; 9-2, a forehead patch fixing frame;

10. a subject; 10-1, the eye to be inspected;

11. and a power supply module.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings.

It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present application, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In the visit procedure of an ophthalmic clinic, vision examination is the first step. As described in the background section, the conventional visual acuity test process requires the use of visual acuity charts, and the two most common visual acuity charts used in China are the standard logarithmic visual acuity chart and the international standard visual acuity chart. The increasing rate between each line of optotype of standard logarithmic visual acuity chart is geometrically series, i.e. in public ratioIncreasing, taking the logarithm of the increase rate to be 0.1 (note>) Vision is recorded for inter-vision tolerances. The international standard visual chart specifies that v=1/a denotes vision, where a denotes the visual field record formed by the eye node at the standard examination distance (five meters or six meters) as a line of sight.

The two visual charts are designed according to the visual angle principle, and are composed of E visual marks (hereinafter referred to as visual marks) with different sizes and different directions, and are arranged from top to bottom according to the sizes of characters, and represent a visual gradient of 0.1-1.5, and the checking distance is five meters.

Normal people should recognize the tenth line of optotype at five meters with a vision of 1.0 (5.0).

The clinical far vision chart is usually used for examination, the vision chart is placed at the position of five meters right in front of the examined person, the vision chart 5.0 (1.0) lines of vision chart is equal to the two eyes of the examined person in height, and the vision chart is hung at the front five meters (namely the standard distance of the far vision chart) of the examined eye (node). This makes the vision testing work require a large space and place requirements high.

In addition, there are also many problems in the conventional vision testing process:

first, if the subject 10 cannot recognize the optotype of the first line of the eye chart at five meters, it is necessary to gradually approach the eye chart until the optotype is recognized, and the nurse records the vision count based on the position where the subject 10 is traveling. If the largest character cannot be recognized at one meter, the physician's hand index is recognized. If the finger is still not recognized before eyes, whether the hand swings or not is detected. If the user cannot recognize the hand, the user needs to check the dark room for a dark feeling. However, in the actual operation process, most of the subjects 10 with vision lower than 0.1 are inconvenient to move, and the risks such as falling easily occur when the subjects are simply leaning forward by one eye with low vision (the other eye is blocked).

Secondly, because the directions and the arrangement of the optotypes on the visual acuity chart are fixed and displayed in a public way, a candidate (namely, a person waiting for vision testing later) can memorize the directions of the optotypes on the visual acuity chart in advance when waiting, and the actual detection result has deviation.

Third, the other non-detection eye is generally blocked by a blocking object held by the subject 10, and there are often cases where the blocking is incomplete or the detection result is deviated due to peeping with the blocking eye.

Fourth, the vision result obtained by detection is recorded by handwriting of a nurse, and there is a possibility of error in eye record.

Fifthly, the international standard visual acuity chart has the problem of uneven optotype grading, for example, 0.1-0.2 and 0.9-1.0 are two adjacent lines from the visual record value, the 0.1 optotype is increased by 1 time compared with the 0.2 optotype, and the 0.9 optotype is increased by only 0.1 time compared with the 1.0 optotype, so that the uneven situation is unfavorable for vision statistics and evaluation. The vision is changed in arithmetic progression, and the visual angle is changed in harmonic progression, so that the harmonic mean can be adopted, but the harmonic mean can cause underestimation of the average strength of the tested person.

Sixth, the examinee dictates the sighting target orientation, the eyesight condition of the examinee is easily obtained by other people around, and hidden danger of privacy disclosure exists.

Seventhly, when the patient sits to perform vision testing, the vision testing result is inaccurate due to front-back deviation of the sitting position and the unfixed position from the node 10-1 of the tested eye to the visual chart.

Eighth, the vision expression mode is: fractional recording (20/20), fractional recording (1.0), logMAR recording also known as log recording (0.1), 5-fractional recording (5.0), etc. The different expression methods can be converted through a function equation, but are inconvenient. In particular, when a scientific study is to be performed using the vision test result of the subject 10, the result can be recorded only in the form of a log record or a 5-point record.

With the progress of science and technology, several types of vision instruments with different styles appear on the market, but a certain problem is also found after clinical use:

when the vision of the subject 10 is lower than 0.1 and the subject needs to go forward, the head of the subject 10 always shields the projected light source, so that the projection and inspection effects are affected, and the inspection time is prolonged. Meanwhile, there is also the risk that the fall occurs while advancing due to the lowered eyesight of the subject 10.

The human voice recognition vision instrument needs the examinee 10 to dictate the sighting target direction during detection and is recognized by software, but the condition of unclear sound recognition exists, and the recording of the result is affected. Meanwhile, if the subject 10 cannot sound, the vision apparatus cannot be applied.

The remote vision apparatus, the examinee 10 answers the direction of the optotype by pressing the keys on the remote control independently at the time of examination. The vision meter host adjusts the size of the displayed optotype according to the answer condition, thereby determining the minimum optotype that the examinee 10 can see clearly. However, in the case of old people, the remote controller cannot be used, and in the case of people with extremely low eyesight, the remote controller keys cannot be seen clearly, so that the accuracy of the inspection is affected.

In view of this, as shown in fig. 1, 2 and 3, the autonomous vision testing device provided in this embodiment includes: a display module 1 configured to display a visual target; the operation module 2 comprises a first interaction structure 2-1, and the first interaction structure 2-1 is triggered to send an adjustment instruction which comprises size information of a visual target; and the control module 3 is respectively in communication connection with the display module 1 and the operation module 2, and is configured to receive the adjustment instruction, generate a visual target corresponding to the size information and control the display module 1 to display the generated visual target.

Alternatively, the display module 1 is an LCD display (liquid crystal display) or a CRT display (picture tube display).

Optionally, the control module 3 is in communication connection with the display module 1 and the operation module 2 through a lora, bluetooth, wiFi or Zigbee communication device.

The autonomous vision inspection device further comprises a power module 11, which is used for providing constant voltage and constant frequency uninterrupted power supply for the display module 1, the operation module 2, the control module 3 and other electric driving equipment in the embodiment through an energy storage battery or external commercial power.

Optionally, the control module 3 is an STM32 microcontroller. The key position signals or other forms of adjusting instructions sent by the operation module 2 are mainly analyzed and correspondingly processed, the key position signals or other forms of adjusting instructions are converted into matched control instructions which are edited in advance according to a work flow defined in a software design process, and the matched control instructions are transmitted to the display module 1 through a Bluetooth communication wireless technology to control a display system in the display module 1 to make corresponding display.

The control module 3 is internally provided with detection software, and the detection software is mainly designed as a rule program for switching the optotype pictures of the first interaction structure 2-1. The detection software installed in the embodiment can be divided into two main types according to the functional plate, one type is far-near vision power detection program design, and the other type is other functional plate program design.

Taking the present embodiment for the distance/near vision power test as an example, the following description will be given. The far-near vision power detection plate can be mainly divided into four parts, and the development is that: acquiring random numbers, switching pictures, judging pictures and judging errors.

Before use, the optotype included in the whole edition international standard logarithmic visual acuity chart (GB 11533-2011) is disassembled regularly according to the size and the dimension and stored in the control module 3. Meanwhile, the targets with different sizes are paired with the triggering events of the first interaction structure 2-1, so that after the first interaction structure 2-1 is triggered differently, the control module 3 can generate targets with fixed sizes matched with the triggering events and oriented randomly.

Specifically, in the eye chart, the same-size optotype has one line, and the control module 3 generates one optotype randomly selected within the line of the size matching the trigger event.

As shown in fig. 3, at the time of vision testing, the subject 10 triggers the first interactive structure 2-1, and the operation module 2 generates and transmits an adjustment instruction including the optotype size information to the control module 3 according to the trigger event. After receiving the adjustment instruction, the control module 3 generates a sighting target with the size matched with the size information according to the size information contained in the adjustment instruction, and controls the display module 1 to display the generated sighting target. The subject 10 observes the generated optotype, and if the generated optotype is visible, the operation module 2 is continuously triggered to generate the optotype of a smaller order until the generated optotype cannot be visible. At this time, the vision level of the subject 10 can be obtained.

According to the autonomous vision testing device provided by the embodiment, the examinee 10 can gradually shrink or enlarge the optotype displayed by the display module 1 by triggering the first interaction structure 2-1 until the orientation of the optotype is just indistinct. Through the above-described process, the subject 10 can autonomously complete the vision testing work. Meanwhile, the display module 1 displays only one optotype, and the orientation of each optotype is randomly displayed and irregular. Can effectively avoid the pre-memorizing of the optotype by the testee.

As shown in fig. 1, 2 and 4, in some embodiments, the operation module 2 further includes a second interaction structure 2-2, and the second interaction structure 2-2 records, through the control module 3, the sighting target information of the current display sighting target of the display module 1 after being triggered.

When the examinee 10 reduces the optotype on the display module 1 to the limit that the examinee can see by triggering the first interaction structure 2-1, triggering the second interaction structure 2-2 to enable the control module 3 to record the optotype information of the current optotype, wherein the optotype information is the vision level of the eye 10-1 to be examined, namely the vision detection result.

The optotype information may be stored in the control module 3, or may be transmitted to a server or other devices having information storage function, which are connected to the present embodiment by wire or wirelessly, for generating an electronic medical record or file of the subject 10.

Optionally, the optotype information can be displayed on the display module 1 in synchronization with the optotype completely; or may be partially displayed, such as only eye-specific information; optotype information may not be displayed.

The optotype information is not displayed or partially displayed, so that the vision condition of the inspected eye 10-1 can not be known in real time by the inspected person 10 and the candidate before the final result is output, psychological pressure of the inspected person 10 during inspection is eliminated, the possibility of cheating (such as guessing the optotype direction or peeping of eyes) of the inspected person 10 is reduced, and the reliability of the inspection result is ensured. At the same time, the privacy protection of the subject 10 is also facilitated.

In some embodiments, the optotype information includes a vision count and an eye-level.

Optionally, the optotype information further includes time information, detection location information, status information of the person under test or other information, so that future backtracking is facilitated.

Alternatively, the vision count is in the form of a log record and a 5 point record.

Of course, the vision count may also include score records and fractional records, with the conversion between the recording modes being accomplished by the control module 3 according to a function stored therein. The manual conversion process is omitted.

Eye-specific information, including "OD" for right eye vision and "OS" for left eye vision.

After the subject 10 has triggered the second interaction structure 2-2, a detection representing one of the eyes 10-1 has been completed. After the current optotype information is recorded, the control module 3 automatically switches the "OD" or "OS" in the current eye-level information to another one, so as to prepare for the detection of the other eye 10-1.

As shown in fig. 1 and 2, in some embodiments, the operation module 2 further includes a third interaction structure 2-3, and after the third interaction structure 2-3 is triggered, a preset adjustment instruction is sent to the control module 3, and the control module 3 generates a preset size optotype and controls the display module 1 to display the preset size optotype.

Optionally, the pre-sized optotype is oriented at random 0.1 optotype.

After the subject 10 completes the vision test of the current subject's eye 10-1 or both eyes, the subject 10 or the device manager triggers the third interaction structure 2-3 to implement the system reset of the present embodiment. The control module 3 regenerates the preset-size optotype and displays it by the display module 1, in preparation for vision testing of another eye 10-1 of the same subject 10 or of the next subject 10.

As shown in fig. 1, 2 and 4, the first interaction structure 2-1 is a knob configured to be triggered by a clockwise rotation or a counter-clockwise rotation.

As shown in fig. 4, the second interaction structure 2-2 is optionally a confirmation key or a knob key integrated with the first interaction structure 2-1. As shown in fig. 1 and 2, the third interaction structure 2-3 is a reset key.

One revolution of the knob is divided into 23 gears, that is, 23 trigger events occur during one revolution of the knob, and the 23 gears or 23 trigger events correspond to vision counts from 0.01 to 2.0 (logarithmic record method). The size of the optotype is uniformly increased and decreased according to the geometric progression according to the national standard GB11533-2011, and the condition of uneven optotype grading can be avoided.

In addition, since the scope of the present embodiment is in the range of 0.01 to 2.0, even if the eyesight of the subject 10 is lower than 0.1, the subject does not need to get up and move, and only the knob is rotated to continuously increase the scope displayed by the display module 1, so that the dangerous situations such as falling caused by inconvenient movement or the person with low eyesight in the forward running can be effectively avoided.

Of course, the gear number values in fig. 4 are merely for more clearly expressing the assignment interval and arrangement sequence of each gear, and do not represent the fixed position of each gear.

In the vision test, the examinee 10 can control the optotype on the display module 1 to be gradually increased or decreased by only rotating the knob clockwise or anticlockwise. When the displayed optotype reaches the limit of vision of the examinee 10, the recording of the detection result can be completed by pressing the knob key (or the confirm key). In the whole detection process, the detected person 10 does not need to interact with medical auxiliary personnel or detection equipment in language, on one hand, the influence on the detection result caused by the sound identification accuracy of the detection equipment can be avoided, on the other hand, the operation is simple (only one rotary key is required to be operated in the whole detection process), the operation error rate is low, and the embodiment can be suitable for old people, persons incapable of sounding or persons with extremely low eyesight and the like.

As shown in fig. 2 and 5, in some embodiments, the display module further includes a refraction unit 4, which is disposed in the visible light path 1-1 emitted by the display module 1; the refraction unit 4 includes at least one refraction lens group 4-1 along a visible light propagation direction, and the refraction lens group 4-1 includes: a first reflecting mirror 4-1-1 for shifting the propagation direction of the visible light entering the refractive lens group 4-1; the reset reflector sets 4-1-2 are arranged on the reflection light path of the first reflector 4-1 at intervals and used for reducing the propagation direction of visible light.

The standard distance is simulated by using the optical path designed by the principles of specular reflection imaging and image distance. After the visible light emitted by the display module 1 is offset by a certain distance through the refraction lens group 4-1, the visible light is restored to the original visible light path 1-1, so that the linear physical distance between the display module 1 and the inspected eye 10-1 is effectively reduced, the occupied area of the embodiment is further reduced, and the requirement on the use environment is reduced.

As shown in fig. 5, in some embodiments, the propagation direction of the visible light is a first direction (X direction in fig. 5), and the direction perpendicular to the first direction is a second direction (Y direction in fig. 5); the included angle between the first reflecting lens 4-1-1 and the first direction is 45 degrees; the reset mirror plate group 4-1-2 includes a second mirror plate 4-1-2-1, a third mirror plate 4-1-2-2, and a fourth mirror plate 4-1-2-3. The second reflecting mirror 4-1-2-1 is arranged in parallel with the first reflecting mirror 4-1-1 at intervals along the second direction, the third reflecting mirror 4-1-2-2 is arranged in axisymmetric with the second reflecting mirror 4-1-2-1 at intervals along the first direction, and the fourth reflecting mirror 4-1-2-3 is arranged in parallel with the third reflecting mirror 4-1-2-2 and is arranged in axisymmetric with the first reflecting mirror 4-1-1.

Taking the structure shown in fig. 5 as an example, the light unit 4 will be described.

After the visible light emitted by the display module 1 propagates along the visible light path 1-1 for L1 distance, the visible light enters the first refraction lens group 4-1 of the refraction unit 4, and the visible light changes the original propagation direction by the reflection effect of the first reflection lens 4-1-1 and continues to propagate along the second direction. After the propagation of the H1 distance, the visible light becomes propagated again in the first direction by the reflection of the second reflecting mirror 4-1-2-1. After the distance L2 is transmitted, the transmission direction of the visible light becomes to be transmitted along the direction perpendicular to the optical path 1-1 of the visible light by the reflection action of the third reflection lens 4-1-2-2. Finally, after the H2 distance is transmitted, the visible light returns to the visible light path 1-1 through the reflection effect of the fourth reflection lens 4-1-2-3.

In the embodiment shown in fig. 5, the refractive unit 4 includes three sets of refractive lens groups 4-1, and visible light propagates L3 distance from the first refractive lens group 4-1 and enters the second refractive lens group 4-1. After exiting from the last refractive lens group 4-1, it enters the eye 10-1 to be inspected through a distance L4. In the refraction lens group 4-1, the L2 distance is 0.1 m, and the distances of H1 and H2 are 0.3 m.

In addition, the refraction unit 4 can be selected to be an open structure, and uniform and stable illumination light is applied to the refraction unit 4 through a light source, so that the influence on the visual detection result caused by uneven brightness in the refraction unit 4 is avoided.

As shown in fig. 1, 2, 6 and 7, in some embodiments, the visible light emitting position of the refraction unit 4 is further provided with an eye shielding device 5, the eye shielding device 5 includes a shielding film 5-1 and a driver 5-2, and the driver 5-2 is used for driving the shielding film 5-1 to reciprocate between a first position and a second position which are horizontally arranged; the second interaction structure 2-2 is triggered to activate the driver 5-2.

As shown in fig. 1 and 2, the present embodiment further includes a housing 9, the top of the housing 9 is provided with an optical path platform 9-1 on which the refraction unit 4 is placed, one end of the optical path platform 9-1 is vertically mounted with the display module 1, and the other end is mounted with the eye shutter 5. The first interaction structure 2-1, the second interaction structure 2-2 and the third interaction structure 2-3 are all distributed on one side of the housing 9 below the light path platform 9-1.

As shown in fig. 6 and 7, the eye shutter 5 is horizontally provided with a first position 5-3 and a second position 5-4 adjacent to each other at intervals, and when the subject 10 approaches the eye shutter 5, the left eye is located at the first position 5-3 and the right eye is located at the second position 5-4. The eye shielding device 5 is provided with a guide structure for bearing the shielding film 5-1, so that the shielding film 5-1 can reciprocate between the first position 5-3 and the second position 5-4 under the action of external power.

Specifically, since the light shielding sheet 5-1 is made of opaque material, it includes two states of shielding the first position 5-3 and shielding the second position 5-4 when in use, i.e. when the subject 10 detects the left eye vision, the light shielding sheet 5-1 is located at the second position 5-4 for shielding the right eye of the subject 10, as shown in fig. 7; similarly, when the subject 10 detects 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, as shown in fig. 6.

Taking the structure shown in fig. 6 and 7 as an example, the driver 5-2 is a motor, the gear 5-2-1 is mounted on the output shaft of the driver 5-2, and the rack 5-1-1 meshed with the gear is mounted on the light shielding sheet 5-1. From the foregoing, it can be seen that when the second interaction structure 2-2 is triggered, the control module 3 determines that the current eye 10-1 has completed the vision test. The control module 3 starts the driver 5-2 while switching the eye information, and the driver 5-2 drives the light shielding sheet 5-1 to move to another position through a transmission structure formed by the racks 5-1-1 of the gears 5-2-1. This process causes the eye-specific information in the system of control module 3 to correspond to the light transmission position of the eye shutter 5.

Meanwhile, the examinee 10 does not need to perform eye shielding work by hands or a self-holding shielding object in the process of detecting eyesight.

As shown in fig. 1 and 2, in some embodiments, an upper forehead patch 6 is mounted above the eye mask 5, and a height-adjustable lower forehead support 7 is mounted below the eye mask 5.

The upper forehead patch fixing frame 9-2 is also arranged on the shell 9, and optionally, the upper forehead patch fixing frame 9-2 is in a strip shape, the middle part is positioned above the front side (the side close to the checked person 10) of the eye shielding device 5, and an upper forehead patch 6 is arranged; both ends are fixedly connected with the shell 9 respectively. The lower forehead support 7 is located below the eye mask 5 and vertically aligned with the upper forehead patch 6. The shell 9 is also provided with a forehead support adjusting button 2-4 for controlling the forehead support 7 to move up and down.

The examinee 10 approaches the eye mask 5 before detecting vision, aligns the left and right eyes with the first position 5-3 and the second position 5-4, respectively, and attaches the forehead to the forehead patch 6. Then, the height of the forehead support 7 is adjusted by the equipment manager independently or until the forehead support 7 is abutted against the lower jaw of the subject 10, so that the head of the subject 10 is supported and limited.

The upper forehead patch 6 and the height-adjustable lower forehead support 7 can ensure the detection distance from the node of the detected eye 10-1 to the display module 1 and the distance between the detected eye 10-1 and the eye shielding device 5, ensure the reliability of the obtained vision detection result and avoid the condition of peeping due to incomplete shielding of the non-detected eye 10-1. In addition, the structure can also enable the embodiment to be suitable for people with different facial contours.

As shown in fig. 1 and 2, in some embodiments, the autonomous vision inspection apparatus further includes a data output module 8, where the data output module 8 includes a printing device communicatively connected to the control module 3, and the printing device outputs the current-stored optotype information and the previous-stored optotype information in the control module 3 after the second interaction structure 2-2 is triggered for the second time.

Optionally, the printing device is a thermal printer.

After the second interaction structure 2-2 is triggered for the first time, the control module 3 determines that the vision test of the first eye 10-1 of the subject 10 is completed, records the optotype information of the eye, and prepares to test the second one. After the second interaction structure 2-2 is triggered for the second time, the control module 3 determines that the vision test of the second eye 10-1 of the subject 10 has also been completed, and records the optotype information of the eye, i.e. that the vision test of the subject 10 has been completed entirely. Thereafter, the control module 3 outputs the optotype information of the two eyes 10-1 to be inspected as a paper result through the printing apparatus, and supplies it to the inspected person 10.

Since the vision inspection result of the embodiment is automatically recorded and printed by the control module 3, the situation that information recording errors, especially eye recording errors, exist due to manual recording is avoided.

The vision testing procedure using the foregoing embodiments is:

in the first step, the head of the subject 10 is fixed to the front side of the eye shutter 5 by adjusting the forehead support 7, and the two eyes 10-1 are aligned with the first position 5-3 and the second position 5-4, respectively.

Step two, the examinee 10 observes the optotype displayed on the display module 1 through the eye shielding device 5 and the refraction unit 4 in sequence.

Step three, the examinee 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 which can be seen by the examinee's eye 10-1 is obtained.

Fourth, the examinee 10 triggers the second interaction structure 2-2 in the operation module 2, records the sighting target information of the current sighting target, and switches the position of the shading sheet 5-1.

And fifthly, repeating the second step and the third step, and obtaining a detection result through a data output module.

And step six, triggering the third interaction structure 2-3 to enable the display module 1 to redisplay the sighting marks with preset sizes.

The related modules in the embodiment are all hardware modules or functional modules combining computer software programs or protocols with hardware in the prior art, and the computer software programs or protocols in the functional modules are all known technologies to those skilled in the art, which are not improvements of the embodiment; the improvement of the embodiment is the interaction relation or connection relation among the modules, namely the integral structure of the embodiment is improved, so as to solve the corresponding technical problems.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the present application, 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 brevity.

Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure the embodiments of the present application. Furthermore, the devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present application, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform on which the embodiments of the present application are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the application, it should be apparent to one skilled in the art that embodiments of the application can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.

While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalents, improvements and/or the like which are within the spirit and principles of the embodiments are intended to be included within the scope of the present application.

Claims (10)

1. An autonomous vision testing device, comprising:

a control module configured to generate a visual target;

an operation module, in communication with the control module, comprising a first interaction structure configured to adjust the size of the optotype generated by the control module;

and the display module is in communication connection with the control module and is configured to display the optotype generated by the control module.

2. The autonomous vision testing device of claim 1, wherein the first interactive structure is a knob configured to adjust the optotype size by rotating clockwise or counterclockwise.

3. The autonomous vision testing device of claim 1, wherein the operating module further comprises a second interaction structure configured to control the control module to store optotype information of the optotype.

4. The autonomous vision testing device of claim 1, wherein the operating module further comprises a third interaction structure configured to control the control module to generate the optotype of a preset size.

5. The autonomous vision testing device of claim 3, further comprising a refractive unit disposed in a path of visible light emitted by the display module; the refraction unit includes at least one refraction lens group along the visible light propagation direction, the refraction lens group including:

a first reflection sheet for shifting a propagation direction of the visible light entering the refractive lens group;

and the reset reflector plate groups are arranged on the reflecting light path of the first reflector plate at intervals and used for reducing the propagation direction of the visible light.

6. The autonomous vision testing device of claim 5, wherein the direction of visible light propagation is a first direction and a direction perpendicular to the first direction is a second direction; the included angle between the first reflecting lens and the first direction is 45 degrees;

the reset reflector plate group comprises a second reflector plate, a third reflector plate and a fourth reflector plate, wherein the second reflector plate is arranged in parallel with the first reflector plate along the second direction, the third reflector plate is arranged in axisymmetric with the second reflector plate along the first direction, and the fourth reflector plate is arranged in parallel with the third reflector plate and is arranged in axisymmetric with the first reflector plate.

7. The autonomous vision testing device of claim 5, wherein the visible light exit position of the refractive unit is further provided with an eye shutter, the eye shutter comprising a light blocking sheet and a driver for driving the light blocking sheet to reciprocate between a first position and a second position disposed horizontally;

the second interaction structure is triggered to activate the driver.

8. The autonomous vision testing device of claim 7, wherein an upper forehead patch is mounted above the eye shield and a height adjustable forehead support is mounted below the eye shield.

9. The autonomous vision testing device of claim 8, further comprising a housing, wherein the housing is provided with a strip-shaped forehead patch fixing frame, the forehead patch is fixed in the middle of the forehead patch fixing frame, and two ends of the forehead patch fixing frame are respectively and fixedly connected to two sides of the housing;

the lower forehead support is arranged opposite to the upper forehead patch.

10. The autonomous vision testing device of claim 3, further comprising a data output module including a printing device communicatively coupled to the control module, the printing device configured to output the optotype information stored by the control module.