CN217938189U - Vision detection device - Google Patents

Abstract

The utility model provides an eyesight detection device. The vision detection device comprises a shell, a processor arranged in the shell, a display screen, a distance detection assembly and an identification assembly, wherein the display screen, the distance detection assembly and the identification assembly are all electrically connected with the processor; the display screen is arranged on the front surface of the shell and used for displaying the sighting target and the vision detection result; the distance detection assembly is arranged on the front surface of the shell and used for collecting distance information between a person to be detected and the display screen; the identification component is arranged on the shell and used for receiving visual target direction information sent by the person to be detected; the processor is used for determining the sighting target according to the distance information and determining the vision detection result according to the sighting target direction information. The vision detection device can improve the portability of vision detection.

Description

Vision detection device

Technical Field

The utility model relates to an eyesight detection technical field especially relates to an eyesight detection device.

Background

With the gradual popularization of higher education, the large-area popularization and use of smart phones, flat panels and televisions result in more and more risks of overuse of eyes borne by people. Especially, with the gradual popularization of education flat plates, students are more confronted with overuse of eyes, and the risk of vision reduction is increased.

However, the current mainstream vision detection methods are created by the content of the optotype displayed on the visual chart, but these detection methods all require an offline physical visual chart, and the person to be detected needs to perform offline detection, so that the vision detection cannot be performed anytime and anywhere, and the convenience is not high.

SUMMERY OF THE UTILITY MODEL

The utility model provides an eyesight detection device to improve eyesight detection's portability.

In order to solve the above technical problem, the utility model provides a technical scheme does: the vision detection device comprises a shell, a processor arranged in the shell, a display screen, a distance detection assembly and an identification assembly, wherein the display screen, the distance detection assembly and the identification assembly are all electrically connected with the processor; the display screen is arranged on the front surface of the shell and used for displaying the sighting target and the vision detection result; the distance detection assembly is arranged on the front surface of the shell and used for collecting distance information between a person to be detected and the display screen; the identification component is arranged on the shell and used for receiving visual target direction information sent by the person to be detected; the processor is used for determining the sighting target according to the distance information and determining the vision detection result according to the sighting target direction information.

Wherein the optotype includes at least one of E-shaped characters, C-shaped characters, alphabetic characters, numeric characters, and cartoon patterns.

Wherein, the distance detection subassembly is first camera or infrared sensor.

The vision detection device further comprises an environment detection assembly, wherein the environment detection assembly is electrically connected with the processor and is used for acquiring environment information of the vision detection device; the processor is also used for judging whether the test environment requirements are met or not according to the environment information, and generating prompt information for prompting the person to be detected to move to the environment meeting the test environment requirements for testing when the test environment requirements are not met; the display screen is also used for displaying the prompt message.

Wherein the environment detection assembly comprises a brightness sensor and a color temperature sensor.

The recognition component comprises a voice recognition sensor, and the sighting target direction information is voice information containing the sighting target direction.

The identification component comprises a second camera, the second camera is arranged on the front surface of the shell, and the sighting mark direction information is action information containing the sighting mark direction.

The vision detection device further comprises a motion detection assembly, wherein the motion detection assembly is electrically connected with the processor and used for acquiring acceleration information of the vision detection device; the processor is further used for judging the motion state of the vision detection device according to the acceleration information.

The vision detection device further comprises a loudspeaker, the loudspeaker is electrically connected with the processor, and the loudspeaker is used for emitting a sound signal containing the vision detection result.

The vision detection device is a mobile electronic device.

The beneficial effects of the utility model, be different from prior art, the utility model provides a visual detection device includes the casing, sets up the treater in the casing, still includes all display screen, distance detection subassembly and the discernment subassembly of being connected with the treater electricity, and display screen and distance detection subassembly set up on the front surface of casing, and the discernment subassembly sets up on the casing. Therefore, the distance information between the person to be detected and the display screen is collected through the distance detection assembly, the sighting target is determined by the processor according to the distance information, and the sighting target is displayed through the display screen, so that the identification assembly can receive sighting target direction information about the sighting target sent by the person to be detected, then the processor determines a vision detection result according to the sighting target direction information, vision detection is achieved anytime and anywhere, and convenience is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural view of an embodiment of the vision testing device of the present invention;

fig. 2 is a schematic diagram of a frame structure of an embodiment of the vision detecting device of the present invention;

fig. 3 is a schematic view of the working principle of an embodiment of the vision detecting device of the present invention.

Detailed description of the invention

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

What is commonly known as optometry is in fact the ability to detect where the eye is looking far (hyperopia), which is accurately defined as: the smallest retinal image that can recognize its shape is measured. Taking the current mainstream commonly used E-word international standard visual acuity chart as an example, generally called standard logarithmic visual acuity chart, at a distance of 5 meters, the projections of the upper and lower two rows of E-words on the retina are exactly 1 degree angles, and the calculation formula of the vision is as follows: vision = 1/degree angle. That is, at a distance of 5 meters, the projection of the optotype on the retina at the top row of the chart is 10 degrees, and the vision is 0.1 (the vision below 0.1 is calculated by applying another formula). Because this visual acuity test principle needs the people to keep away from 5 meters distances of visual acuity chart, and relies on actual visual acuity chart, and this visual acuity chart length width is great, hangs on the wall, therefore is not portable. The utility model provides a vision detection device, this vision detection device can solve above-mentioned problem, and it is right to combine figure and embodiment below the utility model discloses carry out detailed explanation.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of the vision testing apparatus of the present invention, and fig. 2 is a schematic structural diagram of a frame of an embodiment of the vision testing apparatus of the present invention. Specifically, the vision detecting device 10 includes a housing 100, a processor 101 disposed in the housing 100, and a display screen 102, a distance detecting component 103, and an identification component 104 electrically connected to the processor 101. Wherein, the display screen 102 is arranged on the front surface of the casing 100 and is used for displaying the sighting target 105 and the vision detection result; the distance detection assembly 103 is arranged on the front surface of the shell 100 and used for collecting distance information between a person to be detected and the display screen 102; the identification component 104 is arranged on the shell 100 and used for receiving visual target direction information sent by a person to be detected; the processor 101 is configured to determine the optotype 105 based on the distance information and determine a vision test result based on the optotype direction information. The distance information between the person to be detected and the display screen 102 is collected through the distance detection component 103, the processor 101 determines the sighting target 105 according to the distance information, the sighting target 105 is displayed through the display screen 102, then the recognition component 104 can receive sighting target direction information about the sighting target 105 sent by the person to be detected, then the processor 101 determines a vision detection result according to the sighting target direction information, the vision detection is carried out anytime and anywhere, and the convenience is high.

According to the vision test principle, the vision test has the following parameters: the visual acuity value S of the human eye, the field angle θ of the human eye, the distance L between the human eye and the visual chart (for example, in the conventional visual acuity detecting method, the distance L is generally set to 5 meters), each optotype in the visual chart, the font size (length a) of each optotype (width B), and the imaging size (length a) of each optotype in the human eye. It has been found that the sharpness of the optotype depends on the size of the field angle, i.e. the angle the optotype occupies in the field of view, which is approximately equal to the font size of the optotype divided by the distance. For the sighting target with large font, the corresponding field angle theta 1 is large, the person to be detected can see clearly, for the sighting target with small font, the corresponding field angle theta 2 is small, in order to achieve the same definition as the sighting target with large font, namely, in order to achieve the same visual effect as the sighting target with large font when the sighting target with small font is watched by naked eyes, the distance L between human eyes and the visual chart can be reduced, and thus the field angle theta 2 corresponding to the sighting target with small font is increased; therefore, in the vision testing process, the font size of the displayed optotype should be adjusted according to the difference of the distance L, so that the visual angle θ of the optotype in the human eye under the condition of different distances L is the same, thereby ensuring the same detection effect under the condition of different distances L, for example, the size of the optotype can be set in proportion to the distance L. Therefore, after the vision detecting device 10 collects the distance information between the person to be detected and the display screen 102 through the distance detecting assembly 103, the actual size of the visual target can be determined according to the distance information, and the visual target is displayed through the display screen 102, so that the person to be detected can utilize the vision detecting device 10 to realize the vision detection anytime and anywhere, the convenience is high, and the accuracy of the detection result is high.

Then, based on the relationship between the angle of field θ and the distance L, a vision inspection method can be proposed for vision inspection. Specifically, suppose there are N persons to be detected with high or low vision, the vision is respectively recorded as S1, S2, S3, …, sn, the eye chart has M optotypes, and the M optotypes are respectively recorded as E1, E2, E3, …, EM. When the distance L1 between the human eye of the person to be detected with the vision of S1 and the visual chart is 5 meters, the visual target E1 (with the size of A1 & ltB 1 & gt) is watched, and when the human eye is clearly seen, the size of the visual target E1 in the human eye at the moment is recorded as a & ltb & gt, and the corresponding relation is recorded as (S1, L1, E1). By analogy, the person to be tested with vision S1 can see P optotypes at a distance L1 from the visual chart, and the optotypes are respectively marked as (S1, L1, E1), (S1, L1, E2), …, and (S1, L1, ep). Then, under the condition that the size of the visual target in the human eyes is not changed, the distance between the human eyes and the visual chart is increased or reduced, for example, when the distance between the human eyes and the visual chart is reduced to L2, a person to be detected with the vision of S1 watches the visual target E2 (with the size of A2B 2), and the size of the human eyes is a B, the corresponding relation at the moment is recorded and recorded as (S1, L2, E2). Therefore, by the above method, the vision relationship of the person to be detected with vision S1 can be obtained as follows:

(S1，L1，E1)＝(S1，L2，E2)；…；(S1，L1，E1)＝(S1，Lp，Ep1)。

by analogy, the vision relationship of the person to be detected with the vision S2 can be obtained as follows:

(S2, L1, E1) = (S2, L2, E2); …; (S2, L1, E1) = (S2, lp, ep 2); and (S2, L1, E1) ≠ (S2, lp, ep2+ 1), (S2, L1, E1) ≠ (S2, lp, em).

The vision relationship of the person to be detected with the vision of Sn is as follows:

(Sn，L1，E1)＝(Sn，L2，E2)；…；(Sn，L1，E1)＝(Sn，Lp，Epn)。

therefore, when the vision of the person to be detected with Si is at a distance Lp from the visual chart, the person can view the clear sighting mark Epi, and the corresponding vision Q value is as follows: q [ Si, lp, epi ].

Accordingly, the vision inspection device 10 of the present application can perform vision inspection by the above-described vision inspection method. Specifically, the distance information Lp between the person to be detected and the display screen 102 is collected through the distance detection component 103, then the processor 101 determines the sighting target Epi according to the distance information Lp and the vision grade Si of the person to be detected, and the sighting target Epi is displayed through the display screen 102, so that the identification component 104 can receive sighting target direction information about the sighting target Epi sent by the person to be detected, then the processor 101 judges whether the vision grade of the person to be detected is Si according to the sighting target direction information, therefore, the vision detection result can be determined, the vision detection can be carried out anytime and anywhere, and the convenience is high.

Further, the optotype 105 includes at least one of E-character, C-character, alphabetic character, numeric character, and cartoon pattern. It can be understood that, according to the actual detection scene, the visual chart may have different forms of the visual target 105, for example, when the person to be detected is a pilot, the visual target 105 with C-shaped characters may be selected for use, and when the person to be detected is a child without character recognition, the visual target 105 with cartoon patterns may be selected for use, so as to adapt to different persons to be detected, and the universality is good.

Further, the distance detection component 103 is a first camera or an infrared sensor. For example, the distance detection component 103 may be a first camera, and image information of the person to be detected is collected by the first camera, so that distance information between the person to be detected and the display screen 102 can be obtained according to the image information of the person to be detected and actual facial information of the person to be detected; for another example, the distance detecting component 103 may be an infrared sensor, the infrared sensor has a pair of a transmitting tube and a receiving tube, the transmitting tube transmits infrared light, the infrared light is blocked by the person to be detected and then returns to the receiving tube, and the distance between the person to be detected and the infrared sensor can be calculated by calculating the time for the light pulse to return to the receiving tube, so as to obtain the distance information between the person to be detected and the display screen 102. Then, by acquiring the information of the distance between the current person to be detected and the vision inspection apparatus 10, the distance between the person to be detected and the display screen 102 is analyzed, so that the optotype 105 with the corresponding size is displayed on the display screen 102 according to the vision assessment algorithm, so that the person to be detected can perform the vision test. As shown in fig. 2, the processing of the light emission and the distance of the emission tube is realized by a distance information processing algorithm, and the distance information is calculated and then sent to a vision assessment algorithm.

In one embodiment, the recognition component 104 includes a voice recognition sensor and the sighting mark direction information is voice information containing the sighting mark direction. Specifically, the voice recognition sensor is used for receiving the voice signal sent by the person to be detected, at this time, the voice signal sent by the person to be detected includes the visual target direction information that the person to be detected observes the visual target 105 and speaks in voice, so the voice recognition sensor can recognize the voice information, and the semantics are judged through voice, for example, the voice signal sent by the person to be detected includes "upward", "downward", "leftward", "rightward", and "cannot see clearly" and the like, which are used for distinguishing the voice of the visual target 105. As shown in fig. 2, the voice signal received by the voice recognition sensor is analyzed by the voice recognition algorithm to obtain a semantic meaning, the vision detection algorithm judges whether the visual target recognized by the person to be detected is correct according to the analyzed semantic meaning, and evaluates the eyesight of the person to be detected according to the recognition accuracy to determine the vision detection result.

In other embodiments, the recognition component 104 includes a second camera disposed on the front surface of the housing 100, and the sighting mark direction information is motion information including a sighting mark direction. It can be understood that the second camera is configured to obtain a motion image of the person to be detected, at this time, the motion image of the person to be detected includes a limb motion that the person to be detected observes the visual target 105 and makes and represents a direction of the visual target, so that the motion image of the person to be detected can be subjected to image analysis through the second camera, and a meaning of the limb motion is determined, for example, the limb motion that the person to be detected makes includes motions for identifying a direction of the visual target, such as pointing up, pointing down, pointing left, pointing right, and swinging hand or head.

In a specific embodiment, the vision detecting device 10 further includes an environment detecting component 106, where the environment detecting component 106 is electrically connected to the processor 101, and is configured to collect environment information where the vision detecting device 10 is located; the processor 101 is further configured to determine whether the test environment requirement is met according to the environment information, and generate a prompt message for prompting the to-be-detected person to move to the environment meeting the test environment requirement for testing when the test environment requirement is not met; the display screen 102 is also used to display prompt information. It can be understood that, in the process of vision detection, the test environment can have a great influence on the detection result; for example, if the ambient light intensity is too high, the pupil of the person becomes smaller, and if the ambient light intensity is too low, the pupil of the person becomes larger, both of which cause errors in vision detection. Therefore, the vision detecting device 10 in the embodiment of the present application further designs the environment detecting assembly 106, which can collect the environment information of the vision detecting device 10 during the vision test, so as to determine whether the current environment meets the test environment requirement according to the environment information, and when the test environment requirement is not met, generate the prompt information for prompting the person to be detected to move to the environment meeting the test environment requirement for testing, and display the prompt information to the person to be detected by the display screen 102, thereby effectively avoiding the detection error caused by the environment factor.

Further, the environment detection component 106 includes a brightness sensor 1061 and a color temperature sensor 1062. Specifically, the brightness sensor 1061 mainly collects brightness information of the environment, the color temperature sensor 1062 mainly collects color temperature information of the environment, when the processor 101 receives an application notification of vision detection, a command may be sent to the brightness sensor 1061 and the color temperature sensor 1062 to collect brightness and color temperature of the environment, the collected data is transmitted to an environment processing algorithm, and whether the environment where the current person to be detected is located meets the requirement of the test environment is judged; if the detection result does not meet the requirement, the display screen 102 prompts the person to be detected to move to the environment meeting the requirement for vision detection, so that the accuracy of the detection result is ensured.

In a specific embodiment, the vision testing apparatus 10 further includes a motion detection component 107, wherein the motion detection component 107 is electrically connected to the processor 101, and is configured to obtain acceleration information of the vision testing apparatus 10; the processor 101 is further configured to determine a motion state of the vision testing apparatus 10 according to the acceleration information. It can be understood that, during the vision detection, the vision detection device 10 needs to be ensured to be in a static state to meet the requirement of the vision detection, and when the vision detection device 10 is in a moving state, the person to be detected cannot well complete the vision detection; therefore, the acceleration information of the vision testing apparatus 10 is collected by the motion detection component 107, and the motion track of the vision testing apparatus 10 can be judged according to the acceleration information, so as to realize the analysis of the static/motion state of the vision testing apparatus 10.

Specifically, the motion detection component 107 may include a gravity acceleration sensor, which may be a 3-axis accelerometer or a 6-axis accelerometer, taking 3-axis acceleration as an example, by acquiring an acceleration value in a three-dimensional direction, which is recorded as (x, y, z), the environment where the vision detection apparatus 10 is located may be calculated, and when a variation of the value of (x, y, z) is 0, it indicates that the vision detection apparatus 10 is in a stationary state, and vision detection may be performed.

In some embodiments, the vision testing device 10 further includes a speaker (not shown) electrically connected to the processor 101 for emitting an audio signal containing the vision test results. Specifically, when the processor 101 generates the vision test result, the speaker emits a corresponding sound signal according to the vision test result. In addition, in other embodiments, when the current environment of the vision inspection apparatus 10 does not meet the requirement of the test environment, the speaker may further send out prompt information for prompting the person to be detected to move to the environment meeting the requirement of the test environment for testing.

It is understood that the vision testing apparatus 10 of the present application is a mobile electronic device. The mobile electronic device can be a smart phone, a tablet computer, a learning machine and the like, and the vision detection device 10 of the embodiment is high in convenience and can be applied to various vision detection scenes at any time and any place.

In an application scene, please combine fig. 1 to fig. 3, wherein fig. 3 is the utility model discloses the theory of operation schematic diagram of an embodiment of eyesight detection device, the user need utilize eyesight detection device 10 to carry out eyesight detection, the people's eyesight that begins to establish the user is Si, judges whether the eyesight detection APP in eyesight detection device 10 opens, opens the back at eyesight detection APP, through the distance L between distance detection subassembly 103 detection user's people's eye and display screen 102, then judges whether distance L changes. If the distance L is changed to the distance Lp, updating the visual chart according to the distance Lp, testing according to the visual chart corresponding to the distance Lp, and prompting that the distance is kept unchanged as much as possible in the testing process; if the distance L is not changed, the vision grade of human eyes can be input, the display screen 102 displays the corresponding sighting target Ei according to the visual chart corresponding to the distance L, and then the direction of the sighting target included by the gesture or voice of the user is recognized through the recognition component 104. Therefore, whether the visual target direction given by the user is correct or not can be judged, if the visual target direction given by the user is correct, the visual target is reduced to Ei-1 and displayed, if the visual target direction given by the user is wrong, the visual target is increased to Ei +1 and displayed, then the visual target direction included by the gesture or voice of the user is identified through the identification component 104, and whether the visual target direction given by the user is correct or not is judged continuously, so that the vision value Q [ Si, lp, epi ] of the user can be detected, and the vision value Q [ Si, lp, epi ] indicates the vision grade of the corresponding visual target Epi of the user Si under the condition of the distance Lp. It can be found that the user can utilize the vision detection device 10 to realize the vision detection at any time and any place, the convenience is high, and the accuracy of the detection result is high.

In this application, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, the description of the terms "one embodiment," "some embodiments," "a specific embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The vision detection device is characterized by comprising a shell, a processor arranged in the shell, a display screen, a distance detection assembly and an identification assembly, wherein the display screen, the distance detection assembly and the identification assembly are all electrically connected with the processor;

the display screen is arranged on the front surface of the shell and used for displaying the sighting target and the vision detection result; the distance detection assembly is arranged on the front surface of the shell and used for collecting distance information between a person to be detected and the display screen; the identification component is arranged on the shell and used for receiving visual target direction information sent by the person to be detected; the processor is used for determining the sighting target according to the distance information and determining the vision detection result according to the sighting target direction information.

2. The vision testing device of claim 1, wherein the optotypes include at least one of E-shaped characters, C-shaped characters, alphabetic characters, numeric characters, and cartoon graphics.

3. The vision testing device of claim 1, wherein the distance testing component is a first camera or an infrared sensor.

4. The vision testing device of claim 1, further comprising an environmental testing component electrically connected to the processor for collecting environmental information of the vision testing device.

5. The vision testing device of claim 4,

the environment detection assembly comprises a brightness sensor and a color temperature sensor.

6. The vision testing device of claim 1, wherein the recognition component includes a voice recognition sensor, and the sighting target direction information is voice information including a sighting target direction.

7. The vision testing device of claim 1, wherein the identification component includes a second camera disposed on the front surface of the housing, and the sighting target direction information is motion information including a sighting target direction.

8. The vision testing device of claim 1, further comprising a motion detection component electrically connected to the processor for obtaining acceleration information of the vision testing device;

the processor is further used for judging the motion state of the vision detection device according to the acceleration information.

9. The vision testing device of claim 1, further comprising a speaker electrically connected to the processor, the speaker configured to emit an audible signal containing the vision test results.

10. The vision testing device of claim 1, wherein the vision testing device is a mobile electronic device.

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