CN216569897U - Electric vision testing device - Google Patents

Abstract

An electric vision testing device comprises an eyeshade and an observation window which are arranged on a shell, wherein the eyeshade is provided with an observation hole; the pattern belt and the shading cylinder are arranged in the shell, the shading cylinder is provided with a through hole, the pattern belt is moved, the test patterns of a plurality of gears on the pattern belt are respectively reflected out through the through hole and the observation hole, and the selection switch is used for selecting the test patterns observed through the observation hole and sending signals to the control unit; and the control unit is used for judging whether the selected test pattern corresponds to the verification pattern or not and automatically adjusting the gear according to the judgment result. This application is through being light directive pattern piece, and the pattern piece reflects light to observer's eyes, lets the observer directly see the shape of test pattern to judge whether the test pattern that observes is correct, thereby confirm the condition of eyesight, avoided current detection device to need to use focusing lens such as convex lens and concave lens to have the hidden danger that is difficult to control the uniformity when batch production, improved the precision uniformity and the user experience of device, the cost is reduced.

Description

Electric vision testing device

Technical Field

The application relates to medical care products, in particular to an electric vision testing device.

Background

The existing eyesight test device displays an eyesight test chart through a mobile phone screen or a display screen, and then controls a mobile phone to display different patterns. The vision testing device is used for observation and can be completed only by matching a testing cylinder with a mobile phone. During testing, an optical testing cylinder is adopted and pressed on a display screen of the mobile phone, or the display screen is placed in the testing cylinder, different patterns are displayed on the mobile phone or the display screen, vision testing is carried out, and then purchasing service is selected on the mobile phone.

The vision testing device has the disadvantages that if the mobile phone is used for displaying, the operation is inconvenient for one person, a person to be detected presses eyes to the testing cylinder and presses the screen of the mobile phone to watch, the operation of fingers on the screen of the mobile phone is inconvenient, and the vision testing device is convenient to use by other people. Convenience detection can not be carried out at any time and any place, meanwhile, the mobile phone, the test cylinder and the eyes are required to be close to each other to test, the mobile phone cannot be held by hands simultaneously to be kept stable, the test cylinder cannot be held by hands simultaneously to be kept stable, the screen of the mobile phone cannot be clicked to be kept stable, and otherwise, the test cannot be carried out. In order to avoid shaking in multiple modes, the mobile phone screen is flatly placed on a fixed table board, then the test cylinder is pressed on the mobile phone screen, a human body bends down and lowers the head to perform detection, certain difference exists between the posture and the vision of standing or sitting posture of the human body, even fluctuation of breath also has influence, the detection accuracy is also influenced after the test is carried out for a long time, and the accuracy is difficult to ensure in the process of selecting and purchasing subsequent services, such as selecting and matching glasses after the test. If the display screen is placed in the test cylinder to display, each action needs to be performed on the mobile phone function, and the test cylinder is complex and inconvenient.

In addition, the vision testing device comprises lenses for focusing such as convex lenses and concave lenses, and when the focusing lenses are produced and processed in a mass production mode, the focusing consistency of each lens and the consistency of the light coaxiality are required to be ensured, the production and processing requirements are high, otherwise, the consistency of mass production is poor, and the testing precision is influenced.

Disclosure of Invention

The technical problem that this application will be solved is to prior art's not enough, provides an electronic eyesight testing device.

The technical problem to be solved by the application is solved by the following technical scheme:

an electric vision testing device, comprising a housing, further comprising:

the observation assembly comprises an eye cover and an observation window which are arranged on the shell, and the eye cover is provided with an observation hole;

the light condensation assembly comprises a pattern belt and a shading cylinder which are arranged in the shell, a test pattern on the pattern belt is provided with a plurality of gears, the shading cylinder is provided with a through hole, the pattern belt is moved, the test pattern on the pattern belt at the plurality of gears can be respectively reflected out through the through hole and the observation hole under the irradiation of light, the position of the observation window is matched with the pattern belt, and the test pattern matched with the observation hole corresponds to the verification pattern matched with the observation window;

the selection switch is arranged on the shell, is electrically connected with the control unit, and is used for selecting the test pattern observed through the observation hole and sending a signal to the control unit;

the control unit is used for judging whether the selected test pattern corresponds to the check pattern according to the received signal, automatically adjusting the gear according to a judgment result until the final vision grade of the observer is detected, and the observation window is also used for displaying the final vision grade.

Furthermore, the light condensing assembly further comprises a light condensing hole, a light condensing lens, a light sensing sheet and a reflector, wherein the light condensing hole is formed in the shell, the light condensing lens is arranged in the light condensing hole, the light sensing sheet is arranged below the light condensing lens, and natural light can pass through the light condensing lens, then passes through the light sensing sheet, then is converged on the reflector and then is reflected to the pattern belt.

Further, the light-focusing assembly comprises a light source, the light source is electrically connected with the control unit, and the light source is used for irradiating the pattern belt.

Furthermore, the light condensation assembly further comprises a transmission fixing component, the transmission fixing component comprises a first positioning wheel, a second positioning wheel and a driving motor, the pattern belt is annular and is sleeved on the first positioning wheel and the second positioning wheel, and the driving motor is used for driving the first positioning wheel to drive the pattern belt to rotate.

Further, the transmission fixing component further comprises a first tensioning wheel and a second tensioning wheel, and the first tensioning wheel and the second tensioning wheel respectively press on the pattern belt to enable the pattern belt to be in a tensioned state.

Further, the transmission fixing part further comprises a limit switch matched with the pattern belt, a boss is arranged on the limit switch, the pattern belt comprises a checking area, a pattern area and a positioning area which are arranged in parallel, the test pattern is arranged in the pattern area, the position of the observation window is matched with the checking area, the checking area comprises the vision grade and the checking pattern, the positioning area is provided with a plurality of positioning holes, the position of the limit switch is matched with the positioning area, and when the driving motor stops rotating, the limit switch descends and the boss is sleeved in the positioning holes.

Further, the transmission fixing part further comprises a photoelectric sensor for counting the displacement of the pattern belt, and the photoelectric sensor comprises a transmitter and a receiver which are respectively arranged on two sides of the pattern belt.

Furthermore, the light condensation assembly also comprises a reflection component, the reflection component is arranged between the light shielding cylinder and the eye mask, and the test pattern is reflected out through the light shielding cylinder, the reflection component and the observation hole in sequence under the irradiation of light.

Further, the reflecting member includes a first inner reflector, a second inner reflector, a third inner reflector, and a fourth inner reflector, or the reflecting member includes a first outer reflector, a second outer reflector, a third outer reflector, and a fourth outer reflector.

Further, the control unit is also used for sending data to the terminal.

Due to the adoption of the technical scheme, the beneficial effects of the application are as follows:

because the electronic eyesight testing arrangement that this application embodiment provided includes: the eye cover and the observation window are arranged on the shell, and the eye cover is provided with an observation hole; the pattern belt and the shading cylinder are arranged in the shell, the test pattern on the pattern belt is provided with a plurality of gears, the shading cylinder is provided with a through hole, the pattern belt is moved, the test pattern on the pattern belt at the plurality of gears can be respectively reflected out through the through hole and the observation hole under the irradiation of light, the position of the observation window is matched with the pattern belt, and the test pattern matched with the observation hole corresponds to the check pattern matched with the observation window; a selection switch for selecting the test pattern observed through the observation hole and transmitting a signal to the control unit; the control unit is used for judging whether the selected test pattern corresponds to the check pattern according to the received signal, automatically adjusting the gear according to a judgment result until the final vision grade of an observer is detected, and the observation window is also used for displaying the final vision grade.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram illustrating a visual testing device provided in an embodiment of the present application in one embodiment;

fig. 2 is a schematic structural diagram of a vision testing device provided in an embodiment of the present application in another implementation;

fig. 3 is a schematic structural diagram of a vision testing device provided in an embodiment of the present application in a further implementation;

fig. 4 is a light path diagram illustrating a direct reflection mode when the vision testing apparatus provided by the embodiment of the present application uses external light;

fig. 5 is a light path diagram illustrating an external reflection mode when the vision testing apparatus provided by the embodiment of the present application uses external light;

FIG. 6 is a diagram illustrating an optical path of an internal reflection mode when the vision testing apparatus provided by the embodiment of the present application uses external light;

FIG. 7 is a diagram illustrating an optical path of a direct reflection mode when a built-in light source is used in the vision testing apparatus provided by the embodiment of the present application;

FIG. 8 is a light path diagram illustrating an external reflection mode when the vision testing apparatus provided by the embodiment of the present application uses a built-in light source;

FIG. 9 is a light path diagram illustrating a reflection mode of a vision testing apparatus provided in an embodiment of the present application when a built-in light source is used;

fig. 10 shows a schematic diagram of a pattern tape in a vision testing apparatus provided in an embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.

One skilled in the relevant art will recognize, however, that one or more of the specific details can be omitted, or other methods, components, or materials can be used. In some instances, some embodiments are not described or not described in detail.

The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning.

Furthermore, the technical features, aspects or characteristics described herein may be combined in any suitable manner in one or more embodiments. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Thus, any sequence in the figures and examples is for illustrative purposes only and does not imply a requirement in a certain order unless explicitly stated to require a certain order.

By placing the electric vision testing device provided by the embodiment of the application close to the eyes of a human, the vision of the human eyes can be detected by observing the inside of the electric vision testing device with the eyes in a comfortable posture, such as standing or sitting posture, suitable for the human body. The application provides an electronic eyesight testing arrangement can detect user's eyesight anytime and anywhere, accomplishes to prevent the protection in advance.

This application embodiment is through on the pattern piece to light directive according to national standard size preparation, then the pattern piece reflects people's eyes light, lets the people directly see the shape or the direction of pattern, confirms the condition of eyesight, has avoided current view detection device to use focusing lens such as convex lens and concave lens to have the hidden danger that is difficult to control the uniformity when batch production.

Meanwhile, according to the national standard visual distance requirement of 25 cm, for example, the distance of 25 cm, the method can be used for the application of the distance of 25 cm in a straight line. And the mode that the light distance is extended by an external reflection device can be adopted, so that the space of the whole product is reduced, and the portable LED lamp is more convenient to carry. The mode that the light distance is prolonged by the internal reflection device can be adopted, so that the space of the whole product is reduced, and the carrying is more convenient.

During the test, external light or built-in light source with the pattern that the light directive need be observed, the light reflection of pattern is observed the hole, people's eye pastes the observation hole, observes the shape or the direction of pattern, the size and the shape and the direction of pattern are adjustable, through adjusting, can know the eyesight condition of people's eye, convenient audio-visual acquisition eyesight test result.

Example (b):

as shown in fig. 1 to 10, an embodiment of the electronic vision testing device provided in the embodiment of the present application includes a housing 100, a viewing assembly, a light focusing assembly, a selection switch 400, and a control unit 500. The housing 100 may be designed as desired, such as a normal housing or a waterproof housing.

And an observation assembly including an eye cup 210 and an observation window 220, the eye cup 210 and the observation window 220 being respectively provided on the housing 100, the eye cup 210 being provided with an observation hole 211.

The light condensing assembly comprises a pattern belt 310 and a light shielding cylinder 320, wherein the pattern belt 310 and the light shielding cylinder 320 are arranged in the shell 100, a plurality of gears are arranged on the test pattern on the pattern belt 310, a through hole 321 is arranged on the light shielding cylinder 320, the pattern belt 310 is moved, and the test pattern 314 in the plurality of gears on the pattern belt 310 can be respectively reflected out through the through hole 321 and the observation hole 211 under the irradiation of light. The position of the observation window 220 is matched with the pattern belt 310, the test pattern 314 matched with the observation hole 211 and the verification pattern 316 matched with the observation window 220 correspond, namely, the test pattern 314 seen through the observation window 220 and the verification pattern 316 seen through the observation hole 211 are set to be the same pattern or character.

And a selection switch 400 disposed on the housing 100, the selection switch 400 being electrically connected to the control unit 500 for selecting the test pattern viewed through the viewing hole 211 and transmitting a signal to the control unit 500. The selection switch 400 may include one or more keys, and when the selection switch 400 includes one key, the selected pattern may be determined by the number of times the key is pressed. The selection switch 400 may also include a plurality of keys, such as an up key, a down key, a left key, and a right key, through which the selected pattern is determined.

And the control unit 500 is configured to determine whether the selected test pattern 314 corresponds to the verification pattern 316 viewed through the observation window 220 according to the received signal, and automatically adjust the gear according to the determination result until the final vision level of the observer is detected, and the observation window is further configured to display the final vision level.

The embodiment of the application provides an electronic eyesight testing arrangement, can let and use pattern or character position as the benchmark, and the light source of people's eye observation position syntropy, emission light shines to pattern or character, then pattern or character reflection light, inject into the observation hole, get into people's eyes, let people observe pattern or character, people's eye watches the shape or the direction of inside different patterns through the observation hole, then according to the observation result, let pattern area 310 convert different pattern or character, the pattern or the character of different gears of transform, it can see different eyesight numerical values to have observation window 220 on shell 100, realize the process of eyesight test. The data can also be transmitted to a terminal connected with the electric vision testing device so as to display and store different vision numerical values and realize the process of vision testing.

Further, the light condensing assembly 300 may further include a light condensing hole 331, a light condensing lens 332, a light sensing sheet 333, and a reflector 334, wherein the light condensing hole 331 is disposed on the housing 100, the light condensing lens 332 is disposed in the light condensing hole 331, the light sensing sheet 333 is made of a transparent material, the light sensing sheet 333 is installed below the light condensing lens 332, and natural light may be reflected onto the pattern belt 310 by being condensed on the reflector 334 after the light condensing lens 332 passes through the light sensing sheet 333.

When the light is natural light, the natural light passes through the condensing lens 332 disposed on the condensing hole 331 to condense the light onto the reflector 334, a photosensitive sheet 333 is disposed between the condensing lens 332 and the reflector 334, the photosensitive sheet 333 is made of a transparent material, and the photosensitive sheet 333 is used to control the intensity of the incident light. When strong light enters, the photosensitive film becomes dark, and the intensity of the incident light is reduced; when weak light is emitted, the light-sensitive sheet is transparent, and the intensity of the light is increased, so that the brightness of the observed pattern or character is kept stable. The light is reflected by the reflector 334 onto the pattern or character, which then reflects the light, enters the viewing aperture, and enters the person's eye, allowing the person to view the pattern or character.

Further, the light focusing assembly 300 may further include a light source 340, the light source 340 being electrically connected to the control unit 500, the light source 340 being used for illuminating the pattern tape 310. In the light condensing method of the present application, the pattern band 310 may be irradiated with natural light, the pattern band 310 may be irradiated with the light source 340, or the pattern band 310 may be irradiated with both the natural light and the light source 340 to condense light.

When light is emitted from the light source 340 disposed in the housing 100, such as from an LED, the control unit 500 ensures that the brightness of the LED is stable, the light from the LED is emitted to the pattern or character, and then the pattern or character reflects the light and enters the observation hole to the human eye, so that the human can observe the pattern or character.

Further, the light focusing assembly 300 may further include a transmission fixing component, the transmission fixing component includes a first positioning wheel 351, a second positioning wheel 352 and a driving motor 353, the pattern belt 310 is annular and is sleeved on the first positioning wheel 351 and the second positioning wheel 352, and the driving motor 353 is used for driving the first positioning wheel 351 to drive the pattern belt 310 to rotate.

Further, the driving fixing unit may further include a first tensioning wheel 354 and a second tensioning wheel 355, and the first tensioning wheel 354 and the second tensioning wheel 355 respectively press against the pattern belt 310 to tension the pattern belt 310. The driving fixing part may fix the pattern belt 310 in various shapes, and in one embodiment, the driving fixing part fixes the pattern belt 310 in an L-shape in which a first positioning wheel 351 and a second positioning wheel 352 are provided at both ends of the pattern belt 310, and a first tension wheel 354 and a second tension wheel 355 are provided at corners of the pattern belt 310 and press the pattern belt 310, so that the pattern belt 310 is processed in a tensioned state.

The pattern belt 310 is a long flexible belt shape, such as plastic film or flexible paper, and the pattern belt 310 is wound in a ring shape inside the housing 100 according to the length and is pulled by a number of tension wheels, wherein the shaft of one wheel is synchronously driven by a manual knob or an electric knob, so that the pattern belt 310 can rotate to realize the change of the size, shape or direction of the pattern or character.

Because the pattern belt 310 adopts a strip-shaped transmission mode, a plurality of pattern characters are arranged on the pattern belt 310, and the length size of the pattern belt 310 can be arbitrarily lengthened to place more pattern characters. Various character patterns that can put are more than the national standard requirement, so, except can all putting into all the line numbers of national standard visual chart (for example national standard GB11533-2011 is the characters of the different size equidirectional lines of a certain number of lines), but also can additionally increase more line numbers, accomplish the precision that is higher than the test precision of national standard visual chart, to many users, can directly use the test result to join in marriage glasses. For example, the national standard is 15 lines of 165 characters, and the embodiment can be further refined into more lines from line to line, so that the test precision is greatly improved. For example, 15 rows of the national standard visual acuity chart respectively represent different visual acuity values, for example, 1 row can be added between 15 rows to be changed into 29 rows, so that the precision of the visual acuity test value is doubled, and the visual acuity test value can be increased more, and the higher precision is achieved.

Further, the transmission fixing part can further comprise a limit switch 360, the limit switch 360 is matched with the pattern belt 310, a boss 361 is arranged on the limit switch 360, the pattern belt 310 comprises a verification area 312, a pattern area 311 and a positioning area 313 which are arranged in parallel, the test pattern 314 is arranged in the pattern area 311, the position of the observation window 220 is matched with the verification area 312, the verification area 312 is provided with a vision grade 315 and a verification pattern 316, the positioning area 313 is provided with a plurality of positioning holes 317, the position of the limit switch 360 is matched with the positioning area, and when the driving motor 353 stops rotating, the limit switch 360 descends and the boss 361 is sleeved in the positioning holes 317. In fig. 10, the direction of arrow a is a direction viewed from the observation window, and the direction of arrow B is a direction viewed from the eye cup.

Further, the driving fixing part further includes a photo sensor 370, the photo sensor 370 is used for counting the displacement amount of the pattern belt 310, and the photo sensor includes a transmitter and a receiver, which are respectively disposed at both sides of the pattern belt 310. The emitter is used for emitting a signal, when the pattern belt 310 moves, the light signal is shielded by the pattern belt 310 when passing through a position without holes, the receiving device cannot receive the signal, when the pattern belt 310 moves to a hole, the light control signal passes through the hole, the receiver receives the signal, and the photoelectric sensor 370 determines the displacement of the moving position through the cooperation of the emitter and the receiver.

Further, the light condensing assembly 300 may further include a reflection member disposed between the light shielding cylinder 320 and the eye mask 210, and reflects the test pattern out through the light shielding cylinder 320, the reflection member, and the observation hole 211 in sequence under light irradiation.

Further, in one embodiment, the reflective component may include a first inner reflector 381, a second inner reflector 382, a third inner reflector 383, and a fourth inner reflector 384, and the first inner reflector 381, the second inner reflector 382, the third inner reflector 383, and the fourth inner reflector 384 are all planar reflectors. In another embodiment, the reflective member includes a first outer reflector 391, a second outer reflector 392, a third outer reflector 393, and a fourth outer reflector 394, and the first outer reflector 391, the second outer reflector 392, the third outer reflector 393, and the fourth outer reflector 394 are each planar outer reflectors. The direction of the arrows in fig. 4 to 9 is the direction in which the light rays move in the optical path.

In one embodiment, the reflective member may have three types, the first type is a direct reflective type, and the pattern piece 310 receives external light or light from the light source 340, and then directly reflects the external light into the light shielding cylinder 320, and then reaches the observation hole 211 of the eye mask 210, and enters the human eye, thereby completing the observation in the direct reflective type. The second is an external reflection light path structure mode, after the pattern sheet 310 receives external light or light from the light source 340, the light is reflected to the out-of-plane reflector, which is a out-of-plane reflector or an out-of-plane reflector plate, the out-of-plane reflector has a plurality of pieces, such as 4 pieces, 6 pieces or 8 pieces, and finally the light is reflected to the observation hole 211 of the eye patch 210 and enters the human eye, thereby completing the observation of the external reflection light path structure mode. The third is an internal reflection light path structure mode, after the pattern sheet 310 receives the external light or the light of the light source 340, the light is reflected to the planar internal reflector, the planar internal reflector is a planar internal reflection triangular prism or prism, the planar internal reflector has a plurality of sheets, such as 4 sheets, 6 sheets or 8 sheets, and the like, and finally the light is reflected to the observation hole 211 of the eyeshade 210 to enter the human eye, thereby completing the observation of the internal reflection light path structure mode. The three light reflection modes can meet the observation requirement, only because the light transmission distance from the pattern to eyes is fixed, the length of the product of the first direct reflection mode can be longer, the volume of the second external reflection light path structure mode can be smaller than that of the first mode, and the volume of the third internal reflection light path structure mode can be smaller than that of the second mode.

Further, the control unit 500 is also used to transmit data to the terminal. The terminal can comprise a mobile phone, a tablet or a computer and the like. The control unit 500 may be connected to the terminal by wire or wirelessly, and 510 is a switch and 520 is a battery in fig. 1 to 3.

The driving motor 353 controls the rotation of the pattern tape 310, and rotates the pattern tape according to the accuracy of the pattern or character recognized by the human eye, and adjusts the patterns or characters with different sizes to perform the next observation.

And a control unit 500 for judging whether the selected test pattern corresponds to the verification pattern viewed through the observation window according to the received signal, and automatically adjusting the gear according to the judgment result.

The control unit 500 may be configured to control the light source and the driving motor 353, and output a control signal to the driving motor 353 for forward or reverse rotation when selecting the direction of the four keys after human eye recognition, and transmit the result to the terminal.

The existing view testing device has two great problems of limitation whether the existing view testing device is attached to a mobile phone screen for watching or a display screen is placed in a testing cylinder, the first problem is that all display screens are spliced by one pixel point, the required accuracy of national standards is that all characters with different sizes must be divided into 5 equal parts, and the mode of splicing by the pixel cannot ensure the equal parts of all characters, so that character patterns are deformed and cannot be used as national standard inspection standards, and the complete testing is not accurate. The second problem is that all display screens are pieced together by one pixel point, so the display screens cannot realize tiny characters, and therefore, in the test of the products, only a part of the national standard size can be selected as a vision detection character pattern, the full-range size measurement of the national standard cannot be realized, and the measurement is limited.

The pattern of this application owing to adopt be the driven mode of bar, arrange on the bar have a lot of pattern characters, and the length dimension of bar can be elongated wantonly, puts more pattern characters. Various character patterns that can put are more than the national standard requirement, so, except can all putting into all the line numbers of national standard visual chart (for example national standard GB11533-2011 is the characters of 15 certain line numbers row different size different directions), but also can additionally increase more line numbers, accomplish the precision that is higher than the test precision of national standard visual chart, to many users, can directly use the test result to join in marriage glasses. For example, the national standard is 15 lines of 165 characters, and the method can be further refined into more lines from line to line, so that the test precision is greatly improved. For example, 15 rows of the national standard visual chart respectively represent different visual force values, 1 row can be added between 15 rows to become 29 rows, the precision of the visual test value is doubled, more rows can be added, and higher precision is achieved.

The embodiment of the application provides an electronic eyesight testing arrangement, its test work process is: if the light source is natural light, the natural light is emitted into the condensing lens during the test working process of taking the natural light as the light source, then passes through the photosensitive transparent sheet and then is condensed on the reflecting device. The photosensitive transparent sheet has the function of controlling the intensity of incident light, and when strong light is incident, the photosensitive transparent sheet becomes dark, so that the intensity of the incident light is reduced. When the weak light is incident, the light-sensitive sheet is transparent, and the incident intensity of the light is increased. Thereby ensuring that the brightness of the viewed pattern or character remains stable. When the light is reflected by the reflector to the pattern or character to be observed, the light is reflected into the shading cylinder. If an additional light source, such as an LED, is turned on, the light source is lighted, and the light of the light source is emitted to the pattern or character to be observed and reflected into the shading cylinder. When the structure is a direct reflection structure, light rays directly enter an observation hole of the eyeshade and enter human eyes to complete the observation function of setting patterns or characters. When the structure is an external reflection light path structure, light rays pass through the external reflection device and then enter the observation hole of the eye mask to enter human eyes, and the observation function of setting patterns or characters is completed. When the structure is an internal reflection light path structure, light rays pass through the internal reflection device and then enter the observation hole of the eye mask to enter human eyes, and the observation function of setting patterns or characters is completed. At this time, human eyes distinguish according to the size and shape of the observed pattern or character or the direction of the character, then the identification result is pressed on four keys on the shell, namely, the upper key is pressed when the observed pattern or character is upward, the lower key is pressed when the observed pattern or character is downward, the left key is pressed when the observed pattern or character is leftward, and the right key is pressed when the observed pattern or character is rightward. At this time, the circuit control means determines whether the actual pattern or character viewed by the human eye is correct or not, based on the direction of the key selected by the human. If the result that the key is pressed by a human hand is judged to be inconsistent with the actual pattern or character, the control unit 500 can control the driving motor to rotate to drive the flexible pattern or character strip to rotate to a gear which is easier to see clearly, a limit switch or a limit photoelectric controller is arranged on the edge of the flexible pattern or character strip, a positioning hole is formed in the edge of the flexible pattern or character strip corresponding to each pattern or character, when the flexible pattern or character strip rotates, the positioning hole can pull the limit switch to lift up and down to perform opening and closing actions of the switch, and the driving motor is controlled to rotate to a preset position to stop. The locating hole also can carry out the light response that light emission received to spacing photoelectric controller, carries out the action that the switch was opened and is closed, and the control motor rotates preset position and just stops. And so on, until the result of the pattern or character observed by the human eyes in the eyeshade is consistent with the result of the actual pattern or character, the control motor is stopped. At this time, the numerical value displayed by the observation window on the shell is the vision condition of the person. If the result that the key is pressed by a human hand is judged to be consistent with the actual pattern or character, the control unit 500 drives the control motor to rotate to drive the flexible pattern or character strip to rotate to a gear which is not easy to see clearly, a limit switch or a limit photoelectric controller is arranged on the edge of the flexible pattern or character strip, a locating hole is formed in the edge of the flexible pattern or character strip corresponding to each pattern or character, when the flexible pattern or character strip rotates, the locating hole can pull the limit switch to lift up and down to perform opening and closing actions of the switch, and the control motor stops when rotating to a preset position. The locating hole also can carry out the light response that light emission received to spacing photoelectric controller, carries out the action that the switch opened and closed, and the control motor rotates preset position and just stops. And so on, until the result of the pattern or character observed by the human eyes in the eyeshade is consistent with the result of the actual pattern or character, the control motor is stopped. At this time, the numerical value displayed by the observation window on the shell is the vision condition of the person.

When the terminal is connected, the control unit 500 sends the test result and the test data to an external terminal product such as a mobile phone, a tablet, or a computer at any time, and archives and calls the test result and the test data at any time. Meanwhile, the APP can be installed on the terminal product to cooperate with medical institutions or glasses manufacturers, so that the medical institutions can know the eyesight conditions of people, and the popularization work of eye use safety in schools is pertinently carried out. The result can also be fed back to the spectacle manufacturer for spectacle matching. According to the eyesight detection device provided by the embodiment of the application, the eyesight problem of the user can be conveniently, quickly and cheaply known in advance, so that the eyesight test process is completed. For treatment in advance to a hospital or an eyeglass store. The functional mechanism comprises the interconnection of any terminals such as an interconnected mobile phone, a tablet or a computer, and the like, and is convenient for network inquiry and subsequent service.

The electric vision testing device meets the requirements of consumers of different crowds on vision testing, eliminates the complexity of the original testing mode in the market, reduces the product cost, improves the consistency of mass production, is beneficial to more crowds to use and prevent vision problems, improves the substitution requirement and technical shortages in the market, and fills the gap that the current vision testing can not be carried out on the accurate testing market at any time and any place in a popular way.

The present application has been described with reference to specific examples, which are provided only to aid understanding of the present application and are not intended to limit the present application. For a person skilled in the art to which the application pertains, several simple deductions, modifications or substitutions may be made according to the idea of the application.

Claims (10)

1. The utility model provides an electronic eyesight testing device, includes the shell, its characterized in that still includes:

the observation assembly comprises an eye cover and an observation window which are arranged on the shell, and the eye cover is provided with an observation hole;

the light condensation assembly comprises a pattern belt and a shading cylinder which are arranged in the shell, a test pattern on the pattern belt is provided with a plurality of gears, the shading cylinder is provided with a through hole, the pattern belt is moved, the test pattern on the pattern belt at the plurality of gears can be respectively reflected out through the through hole and the observation hole under the irradiation of light, the position of the observation window is matched with the pattern belt, and the test pattern matched with the observation hole corresponds to the verification pattern matched with the observation window;

the selection switch is arranged on the shell, is electrically connected with the control unit, and is used for selecting the test pattern observed through the observation hole and sending a signal to the control unit;

the control unit is used for judging whether the selected test pattern corresponds to the check pattern according to the received signal, automatically adjusting the gear according to a judgment result until the final vision grade of the observer is detected, and the observation window is also used for displaying the final vision grade.

2. The apparatus of claim 1, wherein the light collecting assembly further comprises a light collecting hole provided on the housing, a light collecting lens provided in the light collecting hole, a photosensitive sheet installed below the light collecting lens, and a reflector, and natural light is reflected onto the pattern tape by being condensed on the reflector after the light collecting lens passes through the photosensitive sheet again.

3. The apparatus of claim 1, wherein the light focusing assembly comprises a light source electrically connected to the control unit, the light source for illuminating the pattern strip.

4. The apparatus of claim 1, wherein the light focusing assembly further comprises a transmission fixing component, the transmission fixing component comprises a first positioning wheel, a second positioning wheel and a driving motor, the pattern belt is annular and is sleeved on the first positioning wheel and the second positioning wheel, and the driving motor is used for driving the first positioning wheel to drive the pattern belt to rotate.

5. The apparatus of claim 4, wherein said drive-fixing member further comprises a first tension wheel and a second tension wheel, said first tension wheel and said second tension wheel respectively pressing against said pattern belt to place said pattern belt in tension.

6. The apparatus according to claim 5, wherein the transmission fixing member further comprises a limit switch engaged with the pattern belt, the limit switch is provided with a boss, the pattern belt comprises a checking area, a pattern area and a positioning area arranged in parallel, the test pattern is arranged in the pattern area, the position of the observation window is engaged with the checking area, the checking area comprises the vision grade and the check pattern, the positioning area is provided with a plurality of positioning holes, the position of the limit switch is engaged with the positioning area, and when the driving motor stops rotating, the limit switch descends and the boss is sleeved in the positioning holes.

7. The apparatus of claim 6, wherein the driving fixing unit further comprises a photo sensor for counting the displacement amount of the pattern tape, the photo sensor comprising a transmitter and a receiver respectively disposed at both sides of the pattern tape.

8. The apparatus according to any one of claims 1 to 7, wherein the light condensing assembly further comprises a reflecting member disposed between the light-shielding cylinder and the eye mask, and the test pattern is reflected by light irradiation through the light-shielding cylinder, the reflecting member, and the observation hole in this order.

9. The apparatus of claim 8, wherein the reflecting means comprises a first inner reflector, a second inner reflector, a third inner reflector, and a fourth inner reflector, or the reflecting means comprises a first outer reflector, a second outer reflector, a third outer reflector, and a fourth outer reflector.

10. The apparatus of any of claims 1 to 7, wherein the control unit is further configured to send data to a terminal.

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