CN109008938B

CN109008938B - Vision detection device and system

Info

Publication number: CN109008938B
Application number: CN201810897822.2A
Authority: CN
Inventors: 钟宇文; 周卫国; 朱向军; 陈泽伟; 刘火根; 李飞行
Original assignee: Guangdong Genius Technology Co Ltd
Current assignee: Guangdong Genius Technology Co Ltd
Priority date: 2018-08-08
Filing date: 2018-08-08
Publication date: 2021-07-06
Anticipated expiration: 2038-08-08
Also published as: CN109008938A

Abstract

The invention discloses a vision detection device and system. The device includes: the processor controls the display to display a target image, the target image is projected to the retina of the detected user through the optical module, and the target image comprises two parallel color bands; the processor acquires a ribbon spacing adjusting instruction through the input device, the ribbon spacing adjusting instruction comprises an adjusted ribbon spacing, the processor controls the display to display a target image after the ribbon spacing is adjusted, until the target image after the ribbon spacing is adjusted is projected onto the retina of a user to be measured through the optical module, the two parallel ribbons are overlapped visually by the user to be measured, and the processor acquires a spacing confirming instruction through the input device; the processor takes the adjusted ribbon spacing corresponding to the latest ribbon spacing adjustment instruction as a target spacing according to the spacing confirmation instruction; and the processor determines the vision value of the tested user according to the target distance. The embodiment of the invention realizes simple operation of vision detection and can carry out vision detection in real time.

Description

Vision detection device and system

Technical Field

The embodiment of the invention relates to the technical field of electronics, in particular to a vision detection device and system.

Background

As users use electronic products more and more, if the eyes are improperly used in the process (such as too long time for using eyes, too close to the screen of the electronic product or incorrect visual angle for watching the electronic product by the eyes), the eyesight is damaged, such as the occurrence of myopia. This situation is even more pronounced among users of the adolescent population due to the lack of autonomy of the adolescent. In order to protect the eyesight of the teenagers, parents urgently hope that the eyesight change condition of the teenagers can be mastered in real time, and when the eyesight is found to have a worsening trend, the teenagers can be supervised to correct wrong eye using habits in life, or the eyesight can be corrected and treated in time, so that early discovery, early prevention and early treatment can be achieved. Meanwhile, teenagers can know the change condition of self vision in real time, and actively cooperate to correct self wrong eye using habits when the vision is found to have a worsening trend, so that the further worsening of the vision is controlled.

Among the prior art, if the user wants to detect eyesight, need go to special mechanism or hospital, and need other personnel or doctor's cooperation and assistance simultaneously, adopt visual acuity chart or special eye light equipment just can accomplish visual acuity test, operate and inconvenient, and can't realize at any time or regularly visual acuity test, cause the user to use to experience relatively poorly.

Disclosure of Invention

The embodiment of the invention provides a vision detection device and system, which are simple and convenient to operate and convenient to carry, can carry out vision detection in real time and improve the use experience of a user.

In a first aspect, an embodiment of the present invention provides a vision testing apparatus, including: an optical module, a processor, a display and an input device; the processor is respectively connected with the display and the input device, and the display is connected with the input device; the optical module is arranged in front of the display; wherein the content of the first and second substances,

the processor acquires a vision detection instruction through the input device, and controls the display to display a target image which is projected onto the retina of the detected user through the optical module and comprises two parallel color bands;

the processor obtains a ribbon spacing adjustment instruction through the input device, the spacing adjustment instruction comprises an adjusted ribbon spacing, the processor controls the display to display a target image after the ribbon spacing adjustment, the target image after the ribbon spacing adjustment is projected onto the retina of a detected user through the optical module until the two parallel ribbons are overlapped visually by the detected user when the target image after the ribbon spacing adjustment is projected onto the retina of the detected user through the optical module, and the processor obtains a spacing confirmation instruction through the input device;

the processor takes the adjusted ribbon spacing corresponding to the latest ribbon spacing adjustment instruction as a target spacing according to the spacing confirmation instruction; and the processor determines the vision value of the detected user according to the target distance.

Furthermore, the optical module comprises a concave lens, an optical filter and a glass sheet provided with micropores, wherein the optical filter is arranged at the micropores, and the concave-convex lens is arranged between the display and the glass sheet.

Further, the processor determines a vision value of the user under test according to the target distance, the distance between the concave lens and the glass sheet, the distance between the micro-holes, and the zoom ratio of the concave lens.

Further, the processor sends the vision value of the tested user to the display for displaying.

Furthermore, part of the display is arranged inside the device, part of the display is arranged outside the device, and the display arranged outside the device displays the vision value of the tested user.

Further, the device also comprises a sliding groove, and the display is arranged in the sliding groove.

Further, the device also comprises a voice module, wherein the voice module is connected with the processor;

and the processor sends the vision value of the tested user to the voice module for playing.

Further, the device further comprises a communication module, wherein the communication module is connected with the processor, and the communication module is used for establishing communication connection between the processor and the mobile terminal.

Further, the colors of the two parallel color bands are red and green respectively.

In a second aspect, an embodiment of the present invention further provides a vision testing system, where the system includes the vision testing apparatus described in the embodiment of the present invention, and further includes a mobile terminal; the mobile terminal is in communication connection with the vision detection device; and the mobile terminal generates and displays a vision detection report according to the vision value of the detected user from the vision detection device.

The invention obtains a vision detection instruction through the processor by the input device, the processor controls the display to display a target image, the target image is projected onto the retina of a detected user through the optical module, the target image comprises two parallel color bands, the processor obtains a color band spacing adjustment instruction through the input device, the color band spacing adjustment instruction comprises an adjusted color band spacing, the processor controls the display to display the target image after the color band spacing adjustment, the target image after the color band spacing adjustment is projected onto the retina of the detected user through the optical module until the two parallel color bands are overlapped visually by the detected user when the target image after the color band spacing adjustment is projected onto the retina of the detected user through the optical module, the processor obtains a spacing confirmation instruction through the input device, and the processor takes the adjusted color band spacing corresponding to the latest color band spacing adjustment instruction as the target spacing according to the spacing confirmation instruction, the treater confirms the eyesight value of the user of being surveyed according to the target interval, has solved among the prior art eyesight detection operation inconvenience, and can't realize at any time or regularly the problem of eyesight detection, has realized easy operation, and portable can carry out eyesight detection in real time, and then has improved user and has used experience.

Drawings

FIG. 1a is a schematic structural diagram of a vision testing apparatus according to a first embodiment of the present invention;

FIG. 1b is a schematic structural diagram of a vision testing apparatus according to a first embodiment of the present invention;

FIG. 1c is a schematic view of an eyeball according to a first embodiment of the present invention;

FIG. 1d is a schematic diagram of an equivalent model of normal vision imaging according to a first embodiment of the present invention;

FIG. 1e is a schematic diagram of an equivalent model of myopia imaging according to a first embodiment of the present invention;

FIG. 1f is a schematic diagram of an equivalent model of hyperopic imaging according to a first embodiment of the present invention;

FIG. 1g is a schematic diagram illustrating a myopia correction according to one embodiment of the present invention;

FIG. 1h is a schematic diagram of a hyperopia correction in accordance with a first embodiment of the present invention;

FIG. 1i is a schematic diagram of a target image according to a first embodiment of the present invention;

FIG. 1j is a schematic diagram of a target image according to a first embodiment of the present invention;

FIG. 1k is a schematic diagram of a target image according to a first embodiment of the present invention;

FIG. 1l is a schematic diagram of a target image according to a first embodiment of the present invention;

FIG. 1m is a schematic structural diagram of a vision testing apparatus according to a first embodiment of the present invention

FIG. 1n is a schematic diagram illustrating a principle of calculating vision values according to a first embodiment of the present invention;

FIG. 1o is a schematic view of a vision value display according to a first embodiment of the present invention;

FIG. 1p is a schematic diagram of a display according to a first embodiment of the present invention;

FIG. 1q is a schematic diagram of a display according to a first embodiment of the present invention;

FIG. 1r is a schematic structural diagram of a vision testing apparatus according to a first embodiment of the present invention;

FIG. 2a is a schematic structural diagram of a vision testing system according to a second embodiment of the present invention;

fig. 2b is a schematic diagram of a mobile terminal displaying a vision test result in the second embodiment of the present invention.

Detailed Description

The following embodiments, each of which provides optional features and examples, may be combined to form multiple alternatives, and each numbered embodiment should not be construed as only one technical solution. The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Example one

Fig. 1a is a schematic structural diagram of a vision testing apparatus according to an embodiment of the present invention, which is applicable to testing vision, and as shown in fig. 1a, the vision testing apparatus may specifically include: the optical module 11, the processor 12, the display 13 and the input device 14, the structure and function of which will be described below.

The processor 12 is connected to the display 13 and the input device 14, respectively, the display 13 is connected to the input device 14, as shown in fig. 1b, the optical module 11 is placed in front of the display 13, wherein:

the processor 12 obtains vision detection instructions through the input device 14, and the processor 1 controls the display 13 to display a target image, wherein the target image is projected onto the retina of the detected user through the optical module 11, and the target image comprises two parallel color bands.

The processor 12 obtains a ribbon spacing adjustment instruction through the input device 14, the ribbon spacing adjustment instruction includes an adjusted ribbon spacing, the processor 12 controls the display 13 to display a target image after the ribbon spacing adjustment, the target image after the ribbon spacing adjustment is projected onto the retina of the user to be measured through the optical module 11 until two parallel ribbons are overlapped visually when the target image after the ribbon spacing adjustment is projected onto the retina of the user to be measured through the optical module 11, and the processor 12 obtains a spacing confirmation instruction through the input device 14.

The processor 12 sets the adjusted ribbon pitch corresponding to the latest ribbon pitch adjustment instruction as the target pitch according to the pitch confirmation instruction; the processor 12 determines the vision value of the tested user according to the target distance.

In the embodiment of the present invention, in order to better understand the technical solution of the embodiment of the present invention, it is necessary to understand the imaging principle of human eyes, and on the basis, it is also necessary to understand the formation principle of myopia and hypermetropia. The following further describes the above aspects. Specifically, the method comprises the following steps:

first, the structure of the eyeball will be explained. As shown in fig. 1c, a schematic view of the structure of an eyeball is shown, wherein the eyeball comprises two parts, namely an eyeball wall and contents. Wherein, the eyeball wall is mainly divided into 3 layers, and the fibrous membrane, the vascular membrane and the retina are arranged in sequence from outside to inside. The fibrous membrane is thick and tough, is made of dense connective tissue, is the outer shell of the eyeball, has the functions of protecting the inner tissues of the eyeball and maintaining the shape of the eyeball, is the cornea 1/6 at the front, is the white opaque sclera at the back 5/6, is the limbus (not shown in fig. 1 c) where the two move together, and is like the filter of the camera, from which light is refracted into the eyeball to be imaged. The blood vessel membrane has the function of nourishing intraocular tissues and forms a dark environment, which is beneficial to the retina to sense the light color. The blood vessels are choroid, ciliary body and iris from inside to front. The ciliary body is dominated by parasympathetic nerves, and can be pulled forwards during contraction, so that the lens ligament is relaxed, and the function of adjusting vision is achieved. The retina contains light-sensitive rod cells and cone cells, and the light-sensitive cells can transmit received chromatic light signals to ganglion cells and then to the occipital visual nerve center of the cerebral cortex through optic nerves to generate color sensation. The contents of the eye are some colorless and transparent refractive structures in the eye, including the lens, aqueous humor (not shown in fig. 1 c) and vitreous humor, which together with the cornea constitute the refractive system of the eye. The lens acts like the lens of a camera and light is projected into it and transmitted to the retina by refraction.

The imaging principle of the human eye is explained on the basis of understanding the eyeball structure. Specifically, the method comprises the following steps: the combined action of the lens and the cornea corresponds to a convex lens and the retina corresponds to a light screen. The lens and cornea concentrate light from an object on the retina to form an image of the object, and the optic nerve cells on the retina are stimulated by the light to transmit the signal to the brain, so that the human eye sees the object. The principle of human eye imaging can also be understood from another point of view, namely, the human eye structure is equivalent to a video camera or a still camera, the front part is a combination with a lens function and composed of a cornea, a crystalline lens, a vitreous body and the like, and the light emitted by an object is converged on the retina which is used for detecting the light and is equivalent to a film at the back part. Through the accommodation effect of crystalline lens, make people's eye see the distant object clearly, specifically do: the lens can change the bending degree under the control of the ciliary body, which is similar to the change of the focal length of a convex lens, when the lens is thick, the lens has strong light refraction capability, and when the lens is thin, the lens has weak light refraction capability. When the ciliary body is relaxed, the crystalline lens becomes thin, and light rays coming from a far position just converge on the retina, so that the human eye can clearly see objects at the far position. When the ciliary body contracts, the crystalline lens thickens, light from nearby light happens to converge on the retina, and the human eye can see nearby objects clearly. The formation principle of the myopia is as follows: as the lens becomes thicker, the refractive power to light becomes stronger and the image falls in front of the retina. The formation principle of the presbyopia is as follows: as the lens becomes thinner, the refractive power to light becomes weaker and the image falls behind the retina. As shown in fig. 1 d-1 f, imaging equivalent model diagrams for normal vision, myopia and hyperopia are given, respectively. On the basis, as shown in fig. 1g and fig. 1h, a schematic diagram of a principle of myopia correction and a schematic diagram of a principle of hyperopia correction are respectively given, wherein a solid line in fig. 1g and a solid line in fig. 1h both represent an optical path before the correction, and a dotted line both represent an optical path after the correction. It can be understood that the vision correction can be performed on the premise that the vision value of the tested user needs to be known, so as to provide different treatment schemes according to the vision value of the tested user, such as configuring glasses corresponding to the vision value. The vision test apparatus provided by the embodiment of the present invention is described in detail below.

The vision testing device may specifically include an optical module 11, a processor 12, a display 13, and an input device 14, where the optical module 11 is placed in front of the display 13. The processor 12 can obtain vision test instructions through the input device 14, and control the display 13 to display a target image according to the vision test instructions, the target image can be projected onto the retina of the tested user through the optical module 11, and the target image can comprise two parallel color bands. The input device 14 may be specifically a key module or a touch module, and accordingly, the vision detection instruction may be generated by pressing a relevant key (e.g., an open key) in the key module, or by clicking a relevant icon (e.g., an open icon) in the touch module, or by inputting a preset gesture on the touch module. The specific presentation form of the input device 14 and the manner of generating the vision test command may be set according to actual conditions, and are not particularly limited. The processor 12 controls the display 13 to display a target image according to the vision detection instruction, the target image may be projected onto the retina of the user to be detected through the optical module 11, so that the user to be detected sees the target image, the target image may include two parallel color bands, it should be noted that the two parallel color bands may be parallel in the vertical direction, may also be parallel in the horizontal direction, specifically in what direction, and may be set according to the actual situation of the detection device, which is not limited specifically herein. It should be further noted that the target image may be projected onto the retina of the user to be tested through the optical module 11, at this time, the two parallel color bands may or may not coincide visually with the user to be tested, and if the two parallel color bands coincide visually with the user to be tested, it may be indicated that the target image has fallen on the retina. If the two parallel color bands do not coincide in the visual range of the user to be measured, it can be said that the target image does not fall on the retina. For example, when the user a uses the vision detecting device shown in fig. 1b, the eyeball of the user a may be placed at the right position in the figure, the input device 14 receives a vision detecting instruction generated by the user a by triggering the open key, and sends the vision detecting instruction to the processor 12, the processor 12 controls the display 13 to display a target image shown in fig. 1i or fig. 1j, the target image may include two parallel color bands, and the colors of the two parallel color bands are red and green, respectively, and the target image will be projected onto the retina of the user a through the optical module 11, at this time, the two color bands may be overlapped visually by the user a as shown in fig. 1k or fig. 1l, and the two color bands may still not be overlapped visually by the user a as shown in fig. 1i and fig. 1 j.

If the two parallel color bands are not overlapped visually by the tested user, the processor 12 may obtain the color band spacing adjustment instruction through the input device 14, the color band spacing adjustment instruction may include the adjusted color band spacing, wherein, similarly, the input device 14 may specifically be a key module or a touch module, and correspondingly, the color band spacing adjustment instruction may be generated by pressing a related key (such as a color band spacing value key) in the key module or by clicking a related icon (such as a color band spacing value icon) in the touch module, and the specific presentation form of the input device 14 and the generation mode of the color band spacing adjustment instruction may be set according to an actual situation, which is not specifically limited herein. The ribbon pitch adjustment instruction may specifically include an adjusted ribbon pitch, where the adjusted ribbon pitch refers to a specific value of the adjusted ribbon pitch, for example, the value of the adjusted ribbon pitch is 8 cm. The processor 12 can control the display 13 to display the target image after the adjustment of the color ribbon spacing according to the color ribbon spacing adjustment instruction, and similarly, the target image after the adjustment of the color ribbon spacing is also projected onto the retina of the user to be tested through the optical module 11, if the two parallel color ribbons do not coincide visually on the user to be tested, the processor 12 can be repeatedly executed to acquire the color ribbon spacing adjustment instruction through the input device 14, the processor 12 controls the display 13 to display the target image after the adjustment of the color ribbon spacing, the target image after the adjustment of the color ribbon spacing is projected onto the retina of the user to be tested through the optical module 11 until the target image after the adjustment of the color ribbon spacing is projected onto the retina of the user to be tested through the optical module 11, and the user to be tested visually coincides with the two parallel color ribbons, at this time, the processor 12 acquires the spacing confirmation instruction through the input device 14, and the spacing confirmation instruction is used for confirming that, and instructs the processor 12 to set the adjusted ribbon pitch corresponding to the latest ribbon pitch adjustment instruction as the target pitch. The target distance is used as a parameter for determining the vision value of the user to be tested.

The processor 12 determines the vision value of the user to be tested according to the target distance, specifically, there may be two implementation manners as follows: firstly, a corresponding relation between the target distance and the vision value of the tested user is established in advance, the number of the corresponding relations is at least one, and the corresponding relations can be stored in a corresponding relation table and stored. The processor 12 determines the vision value of the tested user corresponding to the target distance from the pre-stored corresponding relation table according to the target distance. Illustratively, if the target distance is 8cm, the visual force value of the tested user is 300 degrees; and secondly, pre-establishing a mathematical model between the target distance and the vision value of the tested user, and storing the mathematical model, wherein the target distance is used as an input variable, and the vision value of the tested user is used as an output variable. The processor 12 inputs the target distance into a pre-stored mathematical model, and determines the vision value of the tested user corresponding to the target distance. It is understood that the specific implementation manner of the processor 12 determining the vision value of the detected user according to the target distance may be set according to actual conditions, and is not limited in particular.

It should be noted that, it is understood that the vision value of the detected user is related to the target distance, and the target distance is related to the color bar adjustment command, and in order to reduce the data processing amount, the complexity of the relationship determination may be considered to be simplified. The technical scheme of the embodiment of the invention is adjusted based on the above, and specifically comprises the following steps: the ribbon pitch adjustment instruction according to the embodiment of the present invention includes the adjusted ribbon pitch instead of the difference between the current ribbon pitch and the last ribbon pitch, so that the processor 12 can directly use the adjusted ribbon pitch corresponding to the latest ribbon pitch adjustment instruction as the target pitch after obtaining the pitch confirmation instruction through the input device 14, and further determine the visual power value of the user to be tested according to the target pitch, without calculating the adjusted ribbon pitch according to the difference between the current ribbon pitch and the last ribbon pitch, and then using the latest adjusted ribbon pitch as the target pitch, and further determining the visual power value of the user to be tested according to the target pitch. Therefore, the data processing amount is reduced, and the vision detection efficiency is improved.

It should be noted that, if the processor 12 obtains the vision test instruction through the input device 14, the processor 1 controls the display 13 to display the target image, the target image is projected onto the retina of the tested user through the optical module 11, the target image includes two parallel color bands, at this time, if the two parallel color bands on the visual line of the tested user are overlapped, the operation of obtaining the color band spacing adjustment instruction through the input device 14 by the processor 12 and the subsequent operation do not need to be executed again.

The technical scheme of this embodiment includes that a vision test instruction is obtained through an input device by a processor, the processor controls a display to display a target image, the target image is projected onto a retina of a user to be tested through an optical module, the target image includes two parallel color bands, the processor obtains a color band spacing adjustment instruction through the input device, the color band spacing adjustment instruction includes an adjusted color band spacing, the processor controls the display to display the target image after the color band spacing adjustment, the target image after the color band spacing adjustment is projected onto the retina of the user to be tested through the optical module until the two parallel color bands are overlapped visually by the user to be tested when the target image after the color band spacing adjustment is projected onto the retina of the user to be tested through the optical module, the processor obtains a spacing confirmation instruction through the input device, and uses an adjusted color band spacing corresponding to a latest color band spacing adjustment instruction as a target spacing according to the spacing confirmation instruction, the treater confirms the eyesight value of the user of being surveyed according to the target interval, has solved among the prior art eyesight detection operation inconvenience, and can't realize at any time or regularly the problem of eyesight detection, has realized easy operation, and portable can carry out eyesight detection in real time, and then has improved user and has used experience.

Optionally, as shown in fig. 1m, based on the above technical solution, the optical module 11 may specifically include a concave lens 111, an optical filter 112, and a glass sheet 113 with a micro-hole, where the optical filter 112 is disposed at the micro-hole, and the concave lens 111 is disposed between the display 13 and the glass sheet 113.

In the embodiment of the present invention, the concave lens 111, the optical filter 112 and the glass sheet 113 with the micro-holes form a complete optical path, and the optical filter 112 is disposed at the micro-holes, so that a target image displayed by the display 13 can pass through the concave lens 111, the optical filter 112 and the glass sheet 113 with the micro-holes and then be projected onto the retina of a user to be detected, wherein the concave lens 111 is also called a negative ball lens, the middle of the lens is thin, the edge of the lens is thick, and the lens has a divergent effect on light, and can be used for detecting or correcting myopia. The optical filter 112 may be made of plastic or glass plate with special dye added, the transmittance of the glass plate is originally almost the same as that of air, and all color light can pass through, so that the optical filter is transparent, but after the optical filter is dyed, the molecular structure is changed, the refractive index is also changed, and the passing of some color light is also changed. For example, a white light beam passes through a blue filter, and a blue light beam is emitted, while a little green light and a little red light are absorbed by the filter. Accordingly, it is understood that the red filter only passes red light, the green filter only passes green light, and so on. The color of the optical filter 112 corresponds to the colors of the two parallel color bands in the target image, that is, if the colors of the two parallel color bands are red and green, respectively, the optical filter 112 includes a red optical filter and a green optical filter, wherein the red optical filter only allows the parallel color band with the color of red in the two parallel color bands to pass through, and the green optical filter only allows the parallel color band with the color of green in the two parallel color bands to pass through. It will be appreciated that the number of filters 112 is equal to the number of parallel color stripes, and that since the filters 112 are disposed at the micro-holes, the number of filters 112 is also equal to the number of micro-holes. Since the number of the parallel color stripes is two, the number of the filters 112 is also two, and the number of the micro-holes is also two. In addition, the two microwells are also parallel. Meanwhile, the opening direction of the micropores is parallel to the color bands, namely if the two micropores are parallel in the vertical direction, the two color bands are also parallel in the vertical direction; if the two microwells are parallel in the horizontal direction, the two color bands are also parallel in the horizontal direction. The opening direction of the specific micropores can be set according to actual conditions, and is not particularly limited herein.

Optionally, on the basis of the above technical solution, the processor 12 determines the vision value of the user to be tested according to the target distance, the distance between the concave lens 111 and the glass sheet 113, the distance between the micropores, and the zoom ratio of the concave lens 111.

In the embodiment of the present invention, as shown in fig. 1n, a schematic diagram of a vision value calculation principle of a vision testing apparatus is given. T is a focus formed by opposite direction extension lines imaged on the retina of the tested user when the two parallel color bands are overlapped visually by the tested user. B is the pitch between two micro-holes, a is the pitch between the concave lens 111 (i.e., the detection concave lens) and the glass sheet 113, B is the imaging size, X is the target pitch, and B ═ epsilonx if the zoom ratio of the concave lens 111 is epsilonr. It should be noted that, after the vision testing apparatus determines that the distance a between the concave lens 111 and the glass sheet 113, the distance B between the two micropores, and the zoom ratio epsilon of the concave lens 111 are fixed values, and on the basis of this, if the target distance X is obtained, the imaging size B can be determined according to the formula B ═ epsilon X.

According to the formula

Calculating a vision value, wherein D is the vision value, f is a focal length, the focal length f is determined according to the acquired target distance X, namely a mathematical model of the target distance X and the focal length f is established, and in order to establish the mathematical model, a focal length equivalence thought is introduced, namely for a detected user, in a current vision detection process, the vision value D is a fixed value, in other words, for the detected user, in the current vision detection process, the acquired focal length f is the fixed value. That is, the focal length f is independent of the position of the concave lens 111 (i.e., the detection concave lens). Based on the above, the following processing modes are provided: first, it should be noted that the vision testing apparatus does not include the correcting concave lens, but only includes the testing concave lens (i.e., the concave lens 111), and the correcting concave lens is introduced here only for better understanding of the focal length f. The focal length f is a measure of the focusing or diverging of light in an optical system, and refers to the distance from the optical center of the lens to the focal point of the light collection when parallel light is incident. In short, the focal length f is the distance between the focal point and the center point of the mirror.

Now, assuming that there is no detecting concave lens (i.e. the concave lens 111) and only the correcting concave lens in fig. 1l, the distance a between the focal point T and the correcting concave lens is the focal length f according to the imaging principle of the concave lens. Based on the foregoing, when there is no correcting concave lens in fig. 1l, only the detecting concave lens (i.e., concave lens 111), the focal length f is still equal to a. The distance a between the focal point T and the correcting concave lens is solved by establishing a mathematical model between the distance a between the focal point T and the correcting concave lens and the following parameters described above, wherein the parameters include: distance between the focus T and the correcting concave lens the distance a between the concave lens 111 and the glass sheet 113, the distance B between the two minute holes, the zoom ratio epsilon of the concave lens 111, and the target distance X described above. Since the detection concave lens (i.e., the concave lens 111) is parallel to the correction concave lens, the following relationship exists:

in this relation, except that A is the parameter to be determined, other parameters are known. The above relation is derived as follows:

based on the above, the vision value D of the tested user is finally obtained, namely

The distance a between the concave lens 111 and the glass sheet 113, the distance B between the two micropores, and the zoom ratio epsilon of the concave lens 111 are all constant values, the target distance X is an independent variable, and the vision value D is a dependent variable. The above expression is therefore to be understood as D ═ f (x), where,

namely, a mathematical model between the target distance X and the vision value D of the tested user is established. Then, after the processor 12 obtains the target distance X, it can substitute the target distance X into the above equation to obtain the vision value D of the user to be tested.

Optionally, as shown in fig. 1o, on the basis of the above technical solution, the processor 12 sends the vision value of the user to be tested to the display 13 for displaying.

In the embodiment of the present invention, the display 13 may also be used to display the vision value of the user to be tested, so that the user to be tested can know the vision value of the user through the display 13. It is understood that the manner of displaying the vision value of the tested user on the display 13 may be determined according to practical situations, and is not limited in detail. For example, the vision value of the user to be tested may be displayed at the same time as the target image is displayed, or only the vision value of the user to be tested may be displayed as shown in fig. 1 o.

It should be noted that, in consideration of the influence on the viewing line of the user to be tested due to the shielding of the glass sheet 113, that is, the user to be tested may not clearly view the visual force value of the user to be tested displayed on the display 13 through the optical module 11, the following method may be adopted to solve the problem, specifically: the method comprises the following steps that part of a display 13 is arranged inside a vision detection device, part of the display 13 is arranged outside the vision detection device, the display 13 arranged inside the vision detection device can be used for displaying a target image, the display 13 arranged outside the vision detection device can be used for displaying the vision value of a detected user, and the display 13 for displaying the vision value of the detected user is arranged outside the vision detection device, so that the sight line of the detected user cannot be influenced, and the vision value of the detected user displayed by the display 13 arranged outside the vision detection device can be clearly observed; in the second mode, a sliding groove is formed in the vision detection device, the display 13 is arranged in the sliding groove, the display 13 can move in the sliding groove, and the display 13 can be arranged outside the vision detection device. When the tested user needs to watch the vision value of the tested user displayed by the display 13, the tested user can move out of the vision detection device by pushing the display 13 to move in the chute, and after the display 13 is arranged outside the vision detection device, the tested user can clearly watch the vision value of the tested user displayed by the display 13; and the vision detection device is provided with another display, the display is arranged outside the vision detection device and can be used for displaying the vision value of the detected user, and the display can be connected with or not connected with a display 13 which is arranged inside the vision detection device and is used for displaying the target image. Because the display for displaying the vision value of the tested user is arranged outside the vision detection device, the sight line of the tested user cannot be influenced, and the vision value of the tested user displayed by the display arranged outside the vision detection device can be clearly observed. It is understood that the above-mentioned method may be set according to actual conditions, and is not limited specifically herein.

Optionally, as shown in fig. 1p and fig. 1q, based on the above technical solution, a part of the display 13 is disposed inside the device, a part of the display is disposed outside the device, and the display 13 disposed outside the device displays the visual force value of the user to be tested.

In the embodiment of the present invention, in consideration of the influence on the viewing line of the user to be tested due to the shielding of the glass sheet 113, that is, the user to be tested may not clearly view the visual force value of the user to be tested displayed on the display 13 through the optical module 11, the following method may be adopted to solve the problem, specifically: the part with display 13 is arranged in the eyesight detection device inside, the eyesight detection device outside is arranged in to the part, arrange inside display 13 of eyesight detection device in and can be used for showing the target image, arrange outside display 13 of eyesight detection device in and can be used for showing the visual power value of the user of being surveyed, because the display 13 that shows the visual power value of the user of being surveyed arranges the eyesight detection device outside in, consequently, the sight of the user of being surveyed will not receive the influence, the visual value of the user of being surveyed that the outside display 13 of the eyesight detection device of being arranged in of the eyesight detection device shows can clearly be watched.

Note that, as shown in fig. 1p, the display 13 placed outside the vision inspection apparatus may be located on the upper side of the vision inspection apparatus or may be located on the lower side of the vision inspection apparatus. As shown in fig. 1q, the display 13 placed outside the vision testing apparatus may be located on the left side of the vision testing apparatus or on the right side of the vision testing apparatus. It is understood that the specific form adopted may be set according to actual conditions, and is not limited specifically herein.

Optionally, as shown in fig. 1r, on the basis of the above technical solution, the vision detecting apparatus may further include a sliding slot 15, and the display 13 is disposed in the sliding slot 15.

In the embodiment of the present invention, the slide groove 15 is provided on the vision testing apparatus, the display 13 is placed in the slide groove 15, and the display 13 is movable in the slide groove 15, that is, the display 13 may be placed outside the vision testing apparatus. When the tested user needs to watch the vision value of the tested user displayed on the display 13, the display 13 can be pushed to move in the sliding groove 15, so that the vision detection device is moved out, and after the display 13 is arranged outside the vision detection device, the tested user can clearly watch the vision value of the tested user displayed on the display 13.

Optionally, as shown in fig. 1a, on the basis of the above technical solution, the vision detecting apparatus may further include a voice module 16, where the voice module 16 is connected to the processor 12;

the processor 12 sends the vision value of the tested user to the voice module 16 for playing.

In the embodiment of the present invention, in order to enable the tested user to obtain the eyesight value of the tested user, in addition to the manner that the processor 12 sends the eyesight value of the tested user to the display 13 for displaying, the processor 12 may also send the eyesight value of the tested user to the voice module 16 for playing, that is, the tested user may obtain the eyesight value of the tested user through the voice played by the voice module 16.

Optionally, as shown in fig. 1a, on the basis of the above technical solution, the vision detecting apparatus may further include a communication module 17, where the communication module 17 is connected to the processor 12, and the communication module 17 is used for the processor 12 to establish a communication connection with the mobile terminal.

In the embodiment of the present invention, the eyesight detecting apparatus may further include a communication module 17, where the communication module 17 may be configured to establish a communication connection between the processor 12 and the mobile terminal. The communication connection may be a wireless communication connection, such as bluetooth or the like; and may also be a wired communication connection, such as USB (Universal Serial Bus), etc. The specific implementation manner may be set according to actual conditions, and is not particularly limited herein.

Optionally, on the basis of the above technical solution, the communication module 17 may specifically include a bluetooth unit, and the bluetooth unit is used for the processor 12 to establish a wireless communication connection with the mobile terminal.

Optionally, on the basis of the above technical solution, the communication module 17 may further specifically include a USB unit, where the USB unit is used for the processor 12 to establish a wired communication connection with the mobile terminal.

Optionally, on the basis of the above technical solution, the vision detecting apparatus may further include a power module, and the power module is respectively connected with the processor 12, the display 13, the input device 14, the voice module 16, and the communication module 17 and provides electric energy for the processor.

In the embodiment of the present invention, the vision detecting apparatus may further include a power module, where the power module is respectively connected to the processor 12, the display 13, the input device 14, the voice module 16, and the communication module 17, and provides power for the above modules. Namely, the power module is used for providing electric energy for the vision detection device.

Optionally, on the basis of the above technical solution, the colors of the two parallel color bands are red and green, respectively.

Example two

Fig. 2a is a schematic structural diagram of a vision inspection system according to a second embodiment of the present invention, where this embodiment is applicable to the case of inspecting vision, as shown in fig. 2a, the vision inspection system may specifically include: the vision testing apparatus 1 may further include a mobile terminal 2, and the structure and function thereof will be described below.

The mobile terminal 2 is in communication connection with the vision detection device 1; the mobile terminal 2 generates and displays a vision test report based on the vision value of the user to be tested from the vision test apparatus 1.

In the embodiment of the present invention, in order to better monitor the eyesight of the user to be tested, the eyesight detecting device 1 and the mobile terminal 2 may be in communication connection, where the communication connection may be a wireless communication connection, such as a bluetooth connection, or a wired communication connection, such as a USB data line connection, and may be specifically set according to an actual situation, and is not limited specifically herein. After the mobile terminal 2 establishes communication connection with the vision testing apparatus 1, the mobile terminal 2 may receive the vision value of the tested user sent by the vision testing apparatus 1, as shown in fig. 2a, the mobile terminal 2 may generate and display a vision testing report according to the vision value of the tested user, and at the same time, the mobile terminal 2 may also store the received vision value of the tested user sent by the vision testing apparatus 1, so as to generate a vision change trend graph according to the vision values of the tested users for many times. It is understood that the vision test report may include a vision test variation trend chart, and may also include contents such as vision protection opinions or suggestions. The tested user can timely know the current vision condition according to the vision detection report and correct the eye using habit according to the given suggestions or suggestions, thereby preventing the vision from being degraded or avoiding the further deterioration of the vision.

The technical scheme of this embodiment, through adopting the eyesight detection device in the preamble, it is inconvenient to have solved among the prior art eyesight detection operation, and can't realize at any time or regularly the problem of eyesight detection, has realized easy operation, and portable can carry out eyesight detection in real time, and then has improved user and used experience. Meanwhile, the vision value is uploaded to the mobile terminal, the mobile terminal generates a vision detection report according to the vision value, a user can know the current vision condition in time according to the vision detection report, and the eye use habit is corrected according to the given suggestions or suggestions, so that the vision is prevented from being degraded or the further deterioration of the vision is avoided, and the use experience of the user is further improved.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A vision testing device, comprising: an optical module, a processor, a display and an input device; the processor is respectively connected with the display and the input device, and the display is connected with the input device; the optical module is arranged in front of the display; wherein the content of the first and second substances,

the optical module comprises a concave lens, an optical filter and a glass sheet provided with micropores, wherein the optical filter is arranged at the micropores, and the concave lens is arranged between the display and the glass sheet;

the processor acquires a vision detection instruction through the input device, and controls the display to display a target image which is projected onto the retina of the detected user through the optical module and comprises two parallel color bands; the number of the micropores is equal to that of the parallel color bands;

the processor obtains a ribbon spacing adjustment instruction through the input device, the ribbon spacing adjustment instruction comprises an adjusted ribbon spacing, the processor controls the display to display a target image after the ribbon spacing adjustment, the target image after the ribbon spacing adjustment is projected onto the retina of a detected user through the optical module until the two parallel ribbons are overlapped visually by the detected user when the target image after the ribbon spacing adjustment is projected onto the retina of the detected user through the optical module, and the processor obtains a spacing confirmation instruction through the input device;

the processor takes the adjusted ribbon spacing corresponding to the latest ribbon spacing adjustment instruction as a target spacing according to the spacing confirmation instruction; the processor determines a vision value of the user under test based on the target spacing, the spacing between the concave lens and the glass sheet, the spacing between the micro-holes, and the zoom ratio of the concave lens.

2. The apparatus of claim 1, wherein the processor sends the vision value of the user under test to the display for display.

3. The device of claim 2, wherein the display is partially disposed within the vision testing device and partially disposed outside the vision testing device, the display disposed outside the vision testing device displaying the vision value of the user under test.

4. The device of claim 2, further comprising a chute, the display being disposed in the chute.

5. The apparatus of claim 1, further comprising a voice module coupled to the processor;

6. The apparatus of claim 1, further comprising a communication module, wherein the communication module is connected to the processor, and the communication module is configured to enable the processor to establish a communication connection with a mobile terminal.

7. The device of any one of claims 1-6, wherein the two parallel color bands are red and green in color, respectively.

8. A vision testing system comprising the vision testing device of any one of claims 1-7, and further comprising a mobile terminal; the mobile terminal is in communication connection with the vision detection device; and the mobile terminal generates and displays a vision detection report according to the vision value of the detected user from the vision detection device.