CN219070264U

CN219070264U - Vision testing device and system

Info

Publication number: CN219070264U
Application number: CN202223286958.0U
Authority: CN
Inventors: 陈烈才
Original assignee: Guangdong Zhihui Core Screen Technology Co ltd
Current assignee: Guangdong Zhihui Core Screen Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-05-26
Anticipated expiration: 2032-12-07

Abstract

The application relates to a vision testing device and system. The vision testing device comprises: a device body; a display structure provided to the device main body; wherein the display structure comprises a display screen; the display screen comprises at least a first display area and a second display area, wherein the first display area is used for displaying single-line optotype information, and the second display area is used for displaying vision grade information corresponding to the single-line optotype. According to the scheme, the display screen with the first display area and the second display area can be arranged, the first display area is used for displaying single-line optotype information, the second display area is used for displaying vision grade information corresponding to the single-line optotype, accurate display of contents of the optotype in the vision testing process can be achieved by means of information combination displayed in two different display areas, interference of human factors on vision testing results is effectively reduced, and accuracy of the vision testing process is further improved.

Description

Vision testing device and system

Technical Field

The application relates to the technical field of vision testing, in particular to a vision testing device and a vision testing system.

Background

With the development of society, people use electronic products for a longer time, and vision health of people is also more and more important. When the vision is detected, the vision value is generally tested through the vision chart, so that the vision change condition is detected, and people can take protective measures in time. The general vision instrument is rectangular and is provided with an international standard visual chart, wherein the visual chart consists of 14 lines of E-letter visual marks with different opening directions, and the measured value is 0.1-2.0. During testing, a tester points at the optotype in the sequence from top to bottom, left to right, and the test result is obtained according to the answer condition of the tested person.

In the related art, before the vision test is performed, a tested person needs to enter a test environment, and as the vision chart in the vision meter is fixedly tiled and is free from shielding, the tested person can interfere the vision test result in a mode of carrying the vision chart, and the accuracy of the vision test process is affected.

Disclosure of Invention

In order to solve or partially solve the problems existing in the related art, the application provides a vision testing device and a vision testing system, which can accurately display the contents of a vision chart, effectively reduce the interference of human factors on vision testing results and further improve the accuracy of the vision testing process.

A first aspect of the present application provides a vision testing device comprising:

a device body;

a display structure provided to the device main body;

wherein the display structure comprises a display screen; the display screen comprises at least a first display area and a second display area, wherein the first display area is used for displaying single-line optotype information, and the second display area is used for displaying vision grade information corresponding to the single-line optotype.

In some embodiments, the display screen is an electronic paper display screen displaying both black and white colors.

In some embodiments, the display structure further comprises:

the front light LED lamp source is arranged on one side of the display screen.

In some embodiments, the vision testing device further comprises:

the control panel is arranged on one side of the device main body and is electrically connected with the display screen, wherein the control panel is used for controlling the display screen to switch display contents.

In some embodiments, the vision testing device further comprises:

and the rechargeable power supply is arranged in the device main body and is used for supplying power to the vision testing device.

In some embodiments, the vision testing device further comprises:

a lifting bracket;

the device main body is arranged on the lifting bracket in a lifting manner.

In some embodiments, fixing holes are vertically distributed on the lifting support; the device main body is detachably arranged in the fixing hole of the lifting bracket through a screw.

In some embodiments, lifting rails are vertically distributed on the lifting support; the device body is slidably arranged on the lifting rail.

In some embodiments, the vision testing device further comprises:

the communication module is arranged in the device main body and is electrically connected with the display screen, and the communication module is used for carrying out signal transmission with the intelligent terminal. .

A second aspect of the present application provides a vision testing system, including a vision testing device and a control terminal according to the first aspect of the present application, where the control terminal is in signal connection with the display screen.

The technical scheme that this application provided can include following beneficial effect:

according to the technical scheme, through the display screen with the first display area and the second display area, the first display area is used for displaying single-line optotype information, the second display area is used for displaying vision grade information corresponding to the single-line optotype, accurate display of contents of the optotype in the vision testing process can be achieved by utilizing information combination displayed in two different display areas, interference of human factors on vision testing results is effectively reduced, and accuracy of the vision testing process is further improved.

Further, according to the technical scheme, the electronic paper display screen for displaying the two colors of black and white is adopted for displaying, so that the power consumption of the product is effectively reduced, and the electronic paper display screen is energy-saving and environment-friendly; in addition, the rechargeable power supply is also arranged for supplying power, so that dependence on external power supply when the device is used is reduced, the product is more convenient to install, and the use requirement of a user can be met.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

FIG. 1 is a schematic view of a vision testing apparatus according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of the visual testing device of FIG. 1;

FIG. 3 is another schematic view of a vision testing apparatus shown in an embodiment of the present application;

fig. 4 is another structural schematic diagram of the vision testing apparatus shown in the embodiment of the present application.

Reference numerals: a device main body 110; a lifting chute 111; a display structure 120; a first display area 1211 of the display screen 121; a second display region 1212; a front-light LED light source 122; a light guide plate 123; a control panel 130; a lifting bracket 140; a fixing hole 141; lifting rail 142.

Detailed Description

Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are shown in the drawings, it should be understood that the present application may 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 disclosure to those skilled in the art.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the related art, in the process of using the vision meter, as the vision chart in the vision meter is fixedly tiled and is free from shielding, a tested person can interfere with the vision test result in a back vision chart mode to influence the accuracy of the vision test process.

Aiming at the problems, the embodiment of the application provides a vision testing device which can accurately display the content of a vision chart, effectively reduce the interference of human factors on the vision testing result and further improve the accuracy of the vision testing process.

The following describes the technical scheme of the embodiments of the present application in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a vision testing apparatus according to an embodiment of the present application, and fig. 2 is a sectional view of the vision testing apparatus of fig. 1.

Referring to fig. 1 and 2, the vision testing apparatus of the present application includes: the device body 110 and the display structure 120. The display structure 120 is disposed on the device body 110. The device main body 110 may be a rectangular structure, the display structure 120 may be disposed in the middle of the device main body 110, and the device main body 110 is used as an outer frame to wrap the display structure 120, so that the display structure may be protected when the device falls.

Wherein the display structure 120 comprises a display screen 121. The display screen 121 is mainly used for displaying information of the visual acuity chart. The display screen 121 includes a first display area 1211 and a second display area 1212.

The visual acuity chart is a chart for measuring eyesight, wherein the visual acuity chart commonly used in China comprises: international standard visual acuity chart, logarithmic visual acuity chart, lankohler (Landolt) ring visual acuity chart. Functionally, there are near vision meters and far vision meters.

The vision testing device is mainly applied to an international standard visual acuity chart or a standard logarithmic visual acuity chart, and the international standard visual acuity chart or the standard logarithmic visual acuity chart are hereinafter simply called as the visual acuity chart. The eye chart is generally composed of 14 rows of E-shaped objects with different opening directions, wherein the E-shaped objects are also called optotypes, and each row of optotypes corresponds to different vision grades, such as vision grades of 0.1-1.5 (or 4.0-5.2).

The first display area 1211 is used for displaying single-line optotype information, and it is understood that the first display area 1211 corresponds to any line optotype of the visual chart each time the first display area 1211 displays content, that is, the first display area 1211 can display an "E" word with different opening directions corresponding to any line optotype of the visual chart. Of course, the optotype may also employ other unidirectional patterns, such as arrows, "convex" words. The second display area 1212 is used to display the vision grade information corresponding to the single line optotype in the first display area 1211, for example, a "4.5" letter is displayed on the optotype side so that the vision grade corresponding to the current line optotype is displayed. A single line of optotype and corresponding vision level are displayed through the first 1211 and second 1212 display regions of the display screen 121, respectively.

In some embodiments, the width of the first display area 1211 may be slightly larger than the width of the largest optotype in the eye chart, and the length of the display screen 121 may be slightly larger than the length of the smallest optotype in the eye chart, so that the display screen 121 may display any row of optotypes in the eye chart, and the area of the display screen 121 is effectively reduced, so that the size of the vision testing device is smaller, the occupied space for installing and using a product is reduced, and the convenience of using the product is improved.

In some embodiments, the display 121 employs an electronic paper display that displays both black and white colors. When the electronic paper display screen works, through the action of an electric field, charged particles with black and white colors continuously move, and when the white charged particles rise to the surface of the upper substrate of the display screen, light irradiates the surface of the upper substrate to be totally reflected, so that a white state is formed; when the electric field changes, the charged particles with black and white colors exchange positions, the white charged particles drop, the black charged particles rise to the surface of the upper substrate, and light is fully absorbed by the black charged particles to form a black state, so that a black-and-white single-color display effect is achieved. The display screen 121 is an electronic paper display screen for displaying black and white colors, so that the optotype and the vision grade information displayed by the vision testing device are closer to the paper optotype, and the display effect is improved. In addition, by adopting the electronic paper display screen which only displays two colors of black and white, the response is quicker when the display content is switched, and the power consumption of the product can be further reduced. In other embodiments, the display 121 may also be an electronic paper display that displays at least two colors, such as a black, white, and red electronic display.

In some embodiments, the display structure 120 further includes a front light LED light source 122 disposed on one side of the display screen 121. The front light LED lamp source 122 is used for providing a light source from one side of the display screen 121, and under the condition of darker lamplight, the light source provided by the front light LED lamp source 122 is utilized for light supplement, so that a tested person can effectively see the content displayed by the display screen 121 under the condition of insufficient lamplight, and the stability of the testing process is improved. The front light LED light source 122 preferably adopts white light, and of course, the light color of the front light LED light source 122 may be set to one of red, blue, green, yellow, and orange according to the use requirement. In other embodiments, the front light LED light source 122 may employ a light bar. In other embodiments, to enhance the light effect of the front LED light source 122, the display structure 120 may further include a light guide plate 123 disposed at the display surface end of the display screen 121, where the light guide plate 123 has a plurality of light guide points, and the front LED light source 122 is located at one side of the light guide plate 123. The light emitted from the front light LED light source 122 is absorbed by the light guide plate 123, and when the light is emitted to each light guide point on the light guide plate 123, the reflected light is diffused to each angle, and then the reflection condition is destroyed to be emitted from the front surface of the light guide plate, so that the light guide plate 123 can emit light uniformly, thereby improving the display effect of the display screen 120. The light guide plate 123 may be an optical acrylic plate.

In some embodiments, the vision testing device further includes a control panel 130. Wherein the control panel 130 is disposed at one side of the device body 110. The control panel 130 is electrically connected with the display screen 121, and the control panel 130 controls the display screen 121 to switch display contents. The control panel 130 may be provided with at least two keys, where the at least two keys respectively control the display screen 121 to display the optotype and the vision grade information of the upper line and the lower line. For example, the control panel 130 is provided with a first key for displaying the previous line of optotype and vision grade information and a second key for displaying the next line of optotype and vision grade information, when the first key is controlled by the detector, the display content of the display screen 121 is switched to the previous line of optotype and vision grade information, and when the second key is controlled by the detector, the display content of the display screen 121 is switched to the next line of optotype and vision grade information. In this way, the control panel 130 can realize the switching control of the display information of the display screen 121, so as to improve the convenience of the product in the use process.

In some embodiments, the vision testing device further comprises a rechargeable power source (not shown). The rechargeable power supply is arranged in the device main body and is used for supplying power to the vision testing device. In other embodiments, the rechargeable power source may employ a lithium battery. It should be appreciated that the rechargeable power source provides power through electrical connection with other components of the vision testing apparatus. Wherein the rechargeable power source can be charged through a charging interface. The power supply is realized through the chargeable power supply, so that the dependence of the vision testing device on an external power supply is reduced, the product is more convenient to install and use, the electronic paper display screen is adopted in cooperation with the display screen 121, the power consumption of the product is reduced, and the use convenience of the vision testing device is further improved.

In some embodiments, the vision testing device further includes a communication module (not shown) disposed in the device body 110, wherein the communication module is electrically connected to the display screen 121. The communication module is used for carrying out signal transmission with the intelligent terminal. The communication module can be a WIFI module or a Bluetooth module. In some embodiments, the intelligent terminal may include, but is not limited to: smart phones, tablet computers, notebook computers. In this way, signal transmission between the intelligent terminal and the display screen 121 can be realized, and display content of the display screen 121 can be controlled by using the APP on the intelligent terminal. Wherein the smart terminal control of the display content of the display screen 121 may include, but is not limited to: switching content, zooming content, rotating optotype.

In some embodiments, the vision testing device further includes a lifting bracket 140, the lifting bracket 140 for mounting the device body 110. Specifically, when the vision testing device is installed, the lifting bracket 140 is first disposed at an installation position, such as a wall, and then the device main body 110 is disposed on the lifting bracket 140, so as to implement the installation of the vision testing device. Wherein the apparatus main body 110 is installed on the lifting bracket 140 in a lifting manner. It can be understood that the horizontal height of the display screen 121 can be adjusted by adjusting the position of the device main body 110 on the lifting bracket 140, so that the product is convenient for the testees with different heights, and the use effect of the product is improved.

Fig. 3 is another structural schematic diagram of the vision testing apparatus shown in the embodiment of the present application.

Referring to fig. 3, in some embodiments, fixing holes 141 are vertically distributed on the lifting bracket 140, and the device body 110 is detachably disposed on the fixing holes 141 of the lifting bracket 140 by screws, so that position adjustment of the device body 110 on the lifting bracket 140 is achieved. The fixing holes 141 may be distributed in two rows, and each row is horizontally provided with two fixing holes 141 for fixing the device main body 110, and when the horizontal height of the device main body 110 needs to be adjusted in specific application, screws on the device main body 110 are inserted into the fixing holes 141 corresponding to the horizontal height position.

Referring to fig. 4, in other embodiments, the lifting rail 142 may be vertically disposed on the lifting bracket 140, and the device body 110 is slidably disposed on the lifting rail 142, for example, the device body 110 is disposed on a lifting chute 111 matched with the lifting rail 142, and the device body 110 is matched with the lifting rail 142 through the lifting chute 111 to realize sliding. Thus, the lifting and lowering of the apparatus main body 110 and the lifting and lowering of the stand 140 are realized. The device main body 110 has damping in the sliding process on the lifting rail 142, so that the device main body 110 can be fixed relative to the lifting bracket 140 after the external acting force is removed, and the convenience in the height adjustment process of the device main body 110 is greatly improved. In other embodiments, a magnetic attraction force is provided between the lifting chute 111 and the lifting rail 142, for example, the lifting chute 111 is made of a magnetic material, and the lifting rail 142 is made of a magnetic metal material, such as a ferroalloy, so that the sliding of the device main body 110 between the lifting chute 111 and the lifting rail 142 can be damped by the magnetic attraction force.

For ease of understanding the vision testing apparatus of the present application, the principle is described with reference to the initial screen of the display 121 displaying the first line of optotype and vision grade information of the visual chart. Before the test, the subject is spaced 5 m from the vision testing device, and the horizontal height of the device main body 110 is adjusted to a position corresponding to the subject. When in testing, the other eye is covered at one eye, and when in testing, the control panel 130 or the intelligent terminal controls the visual targets displayed on the display screen 121 to be switched from top to bottom, if the tested person answers correctly and points to the next line of visual targets, the vision grade information beside the last line of visual targets with accurate answer is recorded, and the vision grade information corresponds to the vision value of the tested person.

In this embodiment, the vision testing device of this application is through setting up the display screen that has first display area and second display area, and wherein first display area is used for showing single line optotype information, and the second display area is used for showing the vision grade information that single line optotype corresponds, utilizes the information combination that two kinds of different display areas show, can realize carrying out accurate display to the visual chart content in the vision testing process, effectively reduces the interference of human factor to the vision testing result, further promotes the accuracy of vision testing process.

Corresponding to the embodiment of the application function realizing device, the application also provides a vision testing system and a corresponding embodiment.

The vision testing system of the application comprises the vision testing device and the control terminal, which are in signal connection with the display screen 121, and the display content of the display screen 121 can be remotely controlled by the control terminal. In some embodiments, the control terminal may also be provided with a communication module, and the control terminal is connected with the display screen 121 through a signal of the communication module, where the communication module may be a WIFI module or a bluetooth module. The control terminal can be a smart phone, a tablet computer and a notebook computer.

In the embodiment, the control terminal is used for realizing remote control of the vision testing device, so that the operation convenience of the vision testing device is improved, the display screen with the first display area and the second display area in the vision testing device is used for displaying single-line optotype information and vision grade information, and the accurate display of the contents of the vision chart in the vision testing process can be realized through the combination of the information displayed by the two different display areas.

The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined and pruned according to actual needs, and the modules in the apparatus of the embodiment of the present application may be combined, divided and pruned according to actual needs.

The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A vision testing device, comprising:

a device body;

a display structure provided to the device main body;

wherein the display structure comprises a display screen; the display screen comprises a first display area and a second display area, wherein the first display area is used for displaying single-line optotype information, and the second display area is used for displaying vision grade information corresponding to the single-line optotype.

2. The vision testing device of claim 1, wherein the display screen is an electronic paper display screen displaying both black and white colors.

3. The vision testing device of claim 1, wherein the display structure further comprises:

the front light LED lamp source is arranged on one side of the display screen.

4. The vision testing apparatus of claim 1, further comprising:

5. The vision testing apparatus of claim 1, further comprising:

6. The vision testing apparatus of claim 1, further comprising:

a lifting bracket;

the device main body is arranged on the lifting bracket in a lifting manner.

7. The vision testing apparatus of claim 6, wherein:

fixing holes are vertically distributed on the lifting support;

the device main body is detachably arranged in the fixing hole of the lifting bracket through a screw.

8. The vision testing apparatus of claim 6, wherein:

lifting rails are vertically distributed on the lifting support;

the device body is slidably arranged on the lifting rail.

9. The vision testing apparatus according to any one of claims 1 to 8, further comprising:

the communication module is arranged in the device main body and is electrically connected with the display screen, and the communication module is used for carrying out signal transmission with the intelligent terminal.

10. A vision testing system comprising a vision testing device as claimed in any one of claims 1 to 9 and a control terminal in signal communication with the display screen.