CN214856573U - Vision detection device - Google Patents

Abstract

The utility model discloses a vision detection device, which is provided with a cylinder body and a connecting component, wherein one end of the cylinder body is provided with an ocular lens, and the end part is suitable for being attached to eyes; the other end of the barrel is provided with a viewing frame, the edge of the bottom layer of the viewing frame is provided with at least three conductor points, and the gravity centers of the three conductor points are superposed with the center of the viewing frame; the cylinder body is internally provided with at least two right-angle bends, and a plane mirror is arranged at the right-angle bends and forms an angle of 45 degrees with the horizontal plane; the connecting component is used for fixing the barrel on an intelligent terminal, and the viewing frame is attached to a screen of the intelligent terminal; the total length of the barrel is equal to the optometric set distance. Through the utility model discloses, can carry out visual detection anytime and anywhere cheaply, the testing process standard can realize accurate visual detection moreover, plays fine supporting role to the management of eyesight (including prevention and control, supervision).

Description

Vision detection device

Technical Field

The utility model relates to a look optical instrument and optometry technical field especially relate to an eyesight detection device.

Background

At present, most of vision tests are performed by using visual charts, and the vision tests can be performed only in fixed places, large spaces and environments with standard visual chart brightness, and at present, the vision tests are generally performed in places such as hospitals and spectacle shops. Because the vision detection needs to be specially carried out in a fixed place, the detection is carried out when people feel that the vision is possibly problematic, and the passive detection leads to that the vision is not responded but can not be prevented and controlled in advance. If the vision test can be self-tested at any time and any place without being limited to specific environments and facilities, the vision test is a very favorable support in the aspect of vision protection and the aspect of preventing and controlling vision problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been made in order to provide a solution that overcomes or at least partially solves the above mentioned problems. Therefore, in one aspect of the present invention, there is provided an eye test device, comprising a barrel and a connecting member, wherein one end of the barrel is provided with an eyepiece, and the end is suitable for fitting with the eye; a viewing frame is arranged at the other end below the barrel, at least three conductor points are arranged on the edge of the bottom layer of the viewing frame, and the centers of gravity of the three conductor points are overlapped with the center of the viewing frame; the cylinder body is internally provided with at least two right-angle bends, and a plane mirror is arranged at the right-angle bends and forms an angle of 45 degrees with the horizontal plane; the connecting component is used for fixing the barrel on an intelligent terminal, and the viewing frame is attached to a screen of the intelligent terminal; the total length of the barrel is equal to the optometric set distance.

Optionally, the barrel is telescopic.

Optionally, the eyepiece is a predetermined distance away from one end of the barrel, and one end of the barrel is horn-shaped.

Optionally, the three conductor points form an isosceles triangle.

Optionally, the three conductor points form an equilateral triangle.

Optionally, the flat mirror is a surface mirror.

The technical scheme provided by the application at least has the following technical effects or advantages: the vision detection device is convenient to carry, combines the application that the intelligent terminal of extensive use operation corresponds, can carry out vision detection anytime and anywhere cheaply, and the testing process standard can realize accurate vision detection moreover, plays fine supporting role to the management of eyesight (including prevention and control, supervision).

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention can be implemented according to the content of the description, and in order to make the technical solutions of the present invention and the objects, features, and advantages thereof more obvious and understandable, the following embodiments of the present invention are described specifically.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows a perspective view of a vision inspection device according to a first embodiment of the present invention;

fig. 2 shows a cross-sectional view of a vision inspection apparatus of a first embodiment of the present invention;

fig. 3 shows a side view of a vision testing apparatus of a first embodiment of the present invention;

fig. 4 shows an optical path diagram of a vision inspection apparatus of a second embodiment of the present invention;

FIG. 5 shows the process of correcting and displaying the sighting target image based on the vision detection device by the intelligent terminal;

fig. 6 shows and utilizes the utility model provides a vision detection device combines intelligent terminal to carry out vision detection's process.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As proved in the technical operating Specification for visual acuity test, the visual acuity test chart can be selected from a logarithmic visual acuity test chart, an international standard visual acuity test chart and an ETDRS (early treatment diabetic retinopathy research) visual acuity test chart, the examination distance of the first two visual acuity test charts is 5m, and the examination distance of the latter visual acuity test chart is 4m, so that the existing visual acuity test charts require spacious physical space. The technical operating specification of vision examination requires that 1.0 line of the visual chart should be as high as the eye to be examined, however, the visual charts are fixed on the wall, and the height of the person to be examined is different, and the difference is large, so that the requirement is difficult to meet in the actual vision examination. The technical operating specification of vision examination also requires that the illumination of the visual chart should be uniform and free of glare, if manual illumination is used, the illumination intensity should be 300-.

The utility model discloses on aiming at accord with the basis of above-mentioned standard, provide one kind can not be subject to the physics space, can conveniently, accurately carry out visual detection's device and method again. The utility model discloses in the eyesight detection device that provides be an independent product or equipment. When the eyesight is detected, the method needs to be matched with an app running on the intelligent terminal for use. The intelligent terminal can provide stable sighting target image backlight brightness and sighting target patterns meeting requirements.

In one aspect of the present invention, there is provided a vision testing device, as shown in fig. 1-3, the device has a barrel 1 and a connecting member 2, an eyepiece 3 is provided at one end of the barrel 1, and the end is suitable for fitting with the eye; a viewing frame 4 is arranged at the other end below the barrel, at least three conductor points are arranged on the edge of the bottom layer of the viewing frame 4, and the centers of gravity of the three conductor points are overlapped with the center of the viewing frame; at least two pairs of plane mirrors are arranged in the cylinder body, the plane mirrors form an angle of 45 degrees with the horizontal plane, and the mirror surfaces of each pair of plane mirrors are opposite and form an angle of 90 degrees; the connecting component is used for fixing the barrel on an intelligent terminal, and the viewing frame is attached to a screen of the intelligent terminal; the total length of the barrel is equal to the optometric set distance.

The utility model provides a visual detection device is similar for a bit with the structure of periscope, but the periscope utilizes the reflection principle of level crossing to change the direction that light propagated to can see the condition on the surface of water under water. The utility model utilizes the characteristic that the virtual image formed by the plane mirror has the increased visual distance. Therefore, the technical effect that the visual distance of the dotted line of the sighting mark image seen by the user can reach 5 meters is achieved through the barrel with the limited length.

As a preferred embodiment, in order to make the whole vision testing device smaller, the size of the barrel body is smaller, and the barrel body is of a telescopic structure.

In use, an eye of a person is positioned against one end of the barrel, looking inwardly, said one end of the barrel preferably being flared in order to allow the eye to better engage said one end of the barrel.

In order to avoid dust or other things falling into the barrel and dirtying the plane mirror and the inside of the barrel, the eyepiece is arranged in the barrel close to the end, plane transparent glass can be selected as the eyepiece, the eyepiece is arranged close to the position of one end of the barrel in order to clean the surface of the eyepiece close to one side of human eyes, and the eyepiece is far away from the preset distance of one end of the barrel and cannot be arranged in a too deep place.

As a first plane mirror layout mode, as shown in fig. 2, two pairs of plane mirrors are arranged in the cylinder, the first pair of plane mirrors is arranged at the upper end of the cylinder, and the second pair of plane mirrors is arranged at the lower end of the cylinder, i.e. light is projected onto the first plane mirror at the upper end of the cylinder by the viewing frame in the cylinder, is emitted onto the second plane mirror at the upper end of the cylinder through the first plane mirror, is projected onto the third plane mirror at the lower part of the cylinder through the second plane mirror, is reflected onto the fourth plane mirror by the third plane mirror, is projected onto the eyepiece at the upper end of the cylinder, and reaches eyes of a testee through transmission. By the design of the optical path, the virtual image seen by the tested person is far away from the tested person, so that the specified test distance is realized.

As a second plane mirror layout mode, by taking the structure of a periscope as a reference, the cylinder comprises at least two right-angle bends, the plane mirror is arranged at the right-angle bend of the cylinder, and the plane mirror and the horizontal plane form an angle of 45 degrees. The optical path diagram is shown in fig. 4. As can be seen in fig. 4, the distance of the dashed line presented by the two reflections of the plane mirror seen by the eye is a + b + c, thus achieving the prescribed distance for the vision test.

Because the virtual image that people's eye sees is the virtual image that the level crossing reflection formed, in order to avoid the image edge that leads to because the refraction of glass unclear, the utility model discloses preferred use level crossing mirror is as the plane reflection mirror. The use of the surface mirror can well avoid the refraction of glass to incident light, and because the surface mirror is arranged in the cylinder body, no dust enters, and the surface mirror can be kept clean and not abraded.

The other end of the vision detection device is provided with a viewing frame and a connecting component, and the barrel is fixed on the mobile phone screen through the connecting component, so that the viewing frame is attached to the mobile phone screen.

During the use, open visual detection app on the intelligent terminal at first after, fix the visual detection device on the intelligent terminal screen through connecting device again. The intelligent terminal collects the positions of the at least three conductor points, determines the display position of the pre-stored sighting target image based on the positions of the conductor points, and displays the sighting target image. Therefore, the sighting target image displayed on the intelligent terminal can be ensured to be just in the viewing frame of the vision detection device. Preferably, three conductor points are arranged on the frame of the viewing frame, or four conductor points can be arranged, for example, the four conductor points are made into a square, and the intelligent terminal determines the position of the center of the displayed sighting target image according to the acquired position information of the four conductor points.

Because the vision detection device is used with the app on the intelligent terminal in a matched manner, the sighting target image displayed on the screen of the intelligent terminal is required to be just displayed in the viewing frame of the vision detection device. When the vision inspection device is fixed on the screen, the position fixed on the screen is difficult to be accurately fixed, but the visual target image on the screen needs to be displayed in the visual frame. The utility model discloses in, through set up not at the three conductor point of a straight line on the frame of finding a view, fixed and when laminating on the intelligent terminal screen of frame of finding a view, these three conductor points are discerned to the intelligent terminal detectable to the position of the sighting mark image that the intelligent terminal shows is rectified according to the position of the three conductor point that detects. The vision testing method using the vision testing device is implemented by executing a software program by an intelligent terminal, wherein the software program can be an app program or a browser program, as shown in fig. 5, and the method includes the following steps:

s1, detecting position information of the at least three conductor point contacts with a screen;

s2, determining the display position of the sighting target image based on the position information;

s3, sequentially displaying the visual target images corresponding to the visual force values according to the determined display positions;

s4, receiving user input;

s5, analyzing whether the user input is matched with the attribute of the displayed sighting target image, if so, determining that the test is correct, otherwise, determining that the test is wrong; and determining the visual force value according to the test result corresponding to each visual force value.

Based on the eyesight test method, the eyesight test result can be automatically obtained and can be realized by using a common smart phone or other intelligent terminals, the eyesight test can be completed only by matching one optical device with the application program executed by the smart phone, the test result can be stored, the eyesight can be conveniently compared before and after, and data support is provided for adjusting the eye condition.

The step S2 determines the display position of the optotype image based on the position information, and as shown in fig. 6, specifically includes the following steps:

s21, determining a triangular gravity center point formed by the three conductor points according to the position information of the three conductor points contacting the screen;

s22, calibrating the central point display position of the sighting mark image based on the gravity center point;

s23, determining the display position of the forward marking of the sighting mark image according to the gravity center point and the position information corresponding to a preset conductor point;

and S24, sequentially displaying the pre-stored sighting target images based on the calibrated central point display position and the calibrated forward marking display position.

Through the steps, as long as the viewing frame is placed on the screen of the intelligent terminal, the sighting target image can be guaranteed to be displayed under the viewing frame, so that the viewing frame is not limited to be placed, and the operation and the use are convenient. As can be seen from the above correction process, in order to simplify the calculation process of the position of the center of gravity, as one preferred embodiment, the three conductor points constitute an equilateral triangle, and as another preferred embodiment, the three conductor points constitute an isosceles triangle other than the equilateral triangle.

As a second correction method for the visual target image display, the correction process includes the steps of:

determining a straight line where the first conductor point and the second conductor point are located;

aligning the straight line with a positioning reference line of the sighting target images, wherein at least one sighting target image is provided with the positioning reference line and positioning reference point information;

aligning a third conductor point with the positional reference point;

and sequentially displaying the pre-stored sighting target images according to the alignment result.

In this calibration method, the order of the calibration of the reference line and the calibration of the reference point is not limited.

As a third correction mode of the sighting target image display, the correction process comprises the following steps:

collecting the position of a conductor point, and determining a first conductor point, a second conductor point and a third conductor point;

matching a first positioning reference point of the sighting target image with a first conductor point, wherein three positioning reference points are stored corresponding to each sighting target image;

matching the second positioning reference point and the third reference point of the sighting mark image with a second conductor point and a third conductor point respectively;

and sequentially displaying the pre-stored sighting target images based on the three-point matching result. After the display position and the display direction of the sighting target image are corrected, a voice prompt or other prompt tones can be sent out, the vision testing process is started, and the step S3 is executed.

And displaying the visual target images according to the visual values from low to high, and displaying a preset number of visual target images corresponding to each visual value. The attributes of the sighting target image comprise left, right, upper and lower.

The optotype image corresponding to the category may be displayed as the first optotype image according to the vision value input by the user, or the optotype image corresponding to the lowest vision value may be displayed as the first optotype image by default according to a program.

In the process of testing and analyzing, the following steps are carried out:

s4, receiving user input;

s5, analyzing whether the user input is matched with the attribute of the displayed sighting target image, if so, determining that the test is correct, otherwise, determining that the test is wrong; and determining the visual force value according to the test result corresponding to each visual force value.

If the first visual target image is displayed according to the input visual force value of the user, in S5, if the number of times of correct testing reaches a predetermined threshold, controlling to display a visual target image corresponding to a second visual force value, which is higher than the first visual force value, repeating the execution until the number of times of wrong testing reaches the predetermined threshold, and outputting the previously corresponding visual force value as a vision test result. And if the times of the test errors reach a preset threshold value, controlling to display a visual target image corresponding to a second visual force value, wherein the second visual force value is lower than the first visual force value, repeatedly executing until the times of the test errors reach the preset threshold value, and outputting the corresponding visual force value.

If the first optotype image is displayed at the default lowest vision value, in S5, if the number of times of correct testing reaches a predetermined threshold, controlling to display the optotype image corresponding to a second vision value higher than the first vision value, repeating the execution until the number of times of wrong testing reaches the predetermined threshold, and outputting the previously corresponding vision value as the vision test result.

The utility model discloses in, the sighting mark image is according to the vision value classification prestore that corresponds, and every sighting mark image corresponds the storage and has image attribute information, the attribute of sighting mark image includes left and right, upper and lower. The user can input through voice, and the intelligent terminal determines whether the user inputs left, right, up or down through recognizing and analyzing the voice. The user also can realize through the button on the eyesight detection device barrel, and button information sends intelligent terminal through wireless mode, and this just needs to set up 4 buttons on the barrel, and key-press connection wireless communication module receives the key signal moreover.

The display of the sighting target images in a vision value range can be randomly displayed or displayed according to a preset sequence. In-process of app operation, intelligent terminal is detecting behind the three conductor point, just carry out the correction of sighting mark image display position and carry out the demonstration of sighting mark image, it is unable to see the sighting mark image not through visual detection device, through the utility model provides a visual detection device and method can avoid making false to the visual detection result.

The technical scheme provided by the application at least has the following technical effects or advantages: the vision detection device is convenient to carry, related application programs of the vision detection method are operated by combining with an intelligent terminal which is widely used, vision detection can be carried out at any time and any place cheaply, the detection process is standard, accurate vision detection can be realized, and a good support effect is achieved on vision management (including prevention, control and monitoring).

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (6)

1. The vision detection device is characterized by comprising a barrel and a connecting part, wherein one end of the barrel is provided with an ocular lens, and the end part is suitable for being attached to eyes; the other end of the barrel is provided with a viewing frame, the edge of the bottom layer of the viewing frame is provided with at least three conductor points, and the gravity centers of the three conductor points are superposed with the center of the viewing frame; the cylinder body is internally provided with at least two right-angle bends, and a plane mirror is arranged at the right-angle bends and forms an angle of 45 degrees with the horizontal plane; the connecting component is used for fixing the barrel on an intelligent terminal, and the viewing frame is attached to a screen of the intelligent terminal; the total length of the barrel is equal to the optometric set distance.

2. The vision testing device of claim 1, further characterized in that the barrel is telescoping.

3. The vision testing device of claim 1, further characterized in that said eyepiece is a predetermined distance from an end of said barrel, said barrel end being flared.

4. The vision testing device of claim 1, further characterized in that said three conductor points form an isosceles triangle.

5. The vision testing device of claim 1, further characterized in that said three conductor points form an equilateral triangle.

6. The vision testing device of claim 1, further characterized in that the flat mirrors are surface mirrors.

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