CN110575130B - Remote optometry system and method, and storage medium - Google Patents
Remote optometry system and method, and storage medium Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
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- G16H40/67—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H80/00—ICT specially adapted for facilitating communication between medical practitioners or patients, e.g. for collaborative diagnosis, therapy or health monitoring
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Abstract
The invention discloses a remote optometry system, a remote optometry method and a storage medium, wherein the remote optometry system comprises an intelligent control module, a video chat module, a lens rotation module, a focal power conversion module, a visual target indication module and an eye chart module; the intelligent control module controls the lens rotating module, the focal power conversion module, the sighting mark indication module and the visual chart module to move; the intelligent control module establishes connection with the terminal of the detected person through the video chat module. According to the invention, the naked eyes of the different-place testees can be transmitted to the remote optometry system through the Internet, optometry is carried out under the coordination of the testees, and finally the prescription is given. The invention is not limited by time and space, can provide 24-hour optometry service, and the examinee can complete self-help optometry at any time and any place under the condition of video chat.
Description
Technical Field
The invention relates to the technical field of eye vision optics, in particular to a remote optometry system and method and a storage medium.
Background
Refractive errors are pathological phenomena in which the eye cannot see distant or near objects through self-regulation, and seriously affect daily work, life, physical exercise and leisure and recreation of a subject. Ametropia requires vision correction by wearing eyeglasses or surgery. Wearing eyeglasses, particularly frame eyeglasses, is the most common correction means. Before wearing glasses, an optometry is required, and the reason for the unclear vision of the subject is myopia, hyperopia or astigmatism, or both, as well as specific values and eye pupillary distance. The prescription is then selected according to the prescription: contact lenses or frame lenses. The current optometry mode is that an examinee arrives at a hospital or an optometry mechanism, performs on-site optometry by a professional optometrist, then selects an optometry scheme according to an optometry prescription, if frame glasses are selected, a spectacle frame suitable for facial features and professional characteristics or personal preference and lenses with different colors are selected, the glasses are processed and manufactured by a spectacle maker and then provided for the examinee to use, and after going back, the examinee also needs to return to the optometry mechanism for adjustment or maintenance if discomfort or wearing is caused. Such optometry subjects need to go back and forth 2-4 times, sometimes even more. The problem of the testee who is close to the optometry mechanism and has a wide time is not great, the problem of the testee who is far away is inconvenient, the round trip process is time-consuming and labor-consuming, and the efficiency is low, so that a remote optometry system supported by a network is needed, and the optometry service of the remote optometry system can be received anytime and anywhere to complete optometry before the optometry.
Disclosure of Invention
In view of the above technical problems, the present invention aims to provide a remote optometry system and method, and a storage medium, which solve the problems of time and space limitation of optometry of a subject to a hospital or a lens dispensing mechanism.
The invention adopts the following technical scheme:
a remote optometry system comprising: the visual testing device comprises an intelligent control module, a video chat module, a lens rotation module, a focal power conversion module, a visual target indication module, a height scaling module and an visual chart module;
the intelligent control module is respectively connected with the lens rotating module, the focal power conversion module, the visual target indicating module, the height scaling module and the visual chart module, and controls the lens rotating module, the focal power conversion module, the visual target indicating module, the height scaling module and the visual chart module to move; the intelligent control module is connected with the video chat module or integrated with the video chat module embedded into the intelligent control module, and the intelligent control module is connected with the terminal of the detected person through the video chat module;
the lens rotating module is arranged between the video chat module and the visual chart module and used for clamping the lens; the lens rotating module is rotatable, and the rotating shaft of the lens rotating module is coincident with the optical axis of the camera;
the focal power conversion module is used for driving the lens rotation module and the lens with fixed focal power on the lens rotation module to move back and forth together and grabbing the lens with required degree, and putting the lens into the lens rotation module or taking the lens out of the lens rotation module; the power conversion module comprises a front-back linear driving part and a lens switching part, and the front-back linear driving part of the power conversion module is integrated with a lens rotating bracket of the lens rotating module;
the video chat module is positioned right opposite to the visual target on the visual chart module; the video chat module at least comprises a camera, acquires an eye chart of the eye chart module through the camera, and sends light spots formed on the eye chart by the eye chart and the eye chart indication module and voice prompt information of the intelligent control module to a tested person and receives feedback information of the tested person;
the optotype indication module is used for emitting laser and forming light spots for indicating optotypes on the optotype module;
the visual acuity chart module is provided with a visual acuity chart which meets the regulations, and the visual acuity chart at least comprises a visual acuity chart and relevant parameters thereof.
Further, the intelligent control module comprises a computer, an interface circuit, a microcontroller and a voice recognition circuit, wherein the voice recognition circuit is connected with the computer, the computer is connected with the microcontroller through the interface circuit, and the microcontroller is respectively connected with the lens rotating module, the focal power conversion module, the sighting target indicating module, the height scaling module and the visual chart module.
Further, the lens rotary module comprises a lens rotary seat, a lens clamping elastic piece, a rotary driving mechanism, a lens switch and a lens zero position switch, wherein the rotary driving mechanism can drive the lens rotary seat to rotate positively and negatively, the lens clamping elastic piece is used for clamping the lens, the lens rotary seat comprises a supporting seat and a lens rotary support arranged on the supporting seat, the lens clamping elastic piece, the lens switch and the lens zero position switch are all arranged on the lens rotary support, the lens switch adopts a micro switch, the lens switch is used for detecting the existence of the lens, the lens zero position switch adopts the micro switch, and the lens zero position switch is used for detecting the movement position of the lens rotary seat.
Further, the visual target indication module comprises a laser indicator and a two-dimensional turntable, the two-dimensional turntable drives the laser indicator to perform two-dimensional scanning movement, and the two-dimensional scanning movement can sequentially send out all icons in the front area of the visual test chart module.
Further, the focal power conversion module comprises a lens box, a three-dimensional manipulator and a front-back linear driving mechanism for fixing the focal power lenses, wherein the three-dimensional manipulator is used for grabbing lenses with required degrees in the lens box and placing the lenses into a lens rotating seat or taking out the lenses from the lens rotating seat and placing the lenses into corresponding positions of the lenses in the lens box; the front-back linear driving mechanism of the lens with fixed focal power is used for driving the lens with fixed focal power to move linearly back and forth.
Further, the video chat module comprises a camera, a microphone and a loudspeaker, wherein the camera is used for shooting the visual acuity chart, chat software is installed on the video chat module, the plane of the visual acuity chart is perpendicular to the optical axis of the camera of the video chat module, and the visual acuity chart 1.0 or 4.0 is as high as the optical axis of the camera.
Further, the visual testing device also comprises a height scaling module, wherein the height scaling module is used for enlarging or reducing the height of the visual testing chart, the optical axis of the height scaling module coincides with the optical axis of the camera of the video chat module, the height scaling direction of the height scaling module coincides with the height or length direction of the visual testing chart on the visual testing chart module, and the height scaling module is connected with the intelligent control module.
Further, the height scaling module comprises a biconvex or plano-convex cylindrical lens and a linear driving mechanism, the height scaling module is positioned between the visual chart module and the lens rotating module, and the linear driving mechanism drives the cylindrical lens to reciprocate in a linear mode so as to enlarge or reduce the height of the visual chart.
A remote optometry method comprising:
establishing connection with a terminal of a detected person through a video chat module;
the intelligent control module sends picture information containing the height and the width of the test view and voice information prompting the testee to cooperatively check to the testee terminal through the video chat module, and receives feedback information of the testee terminal;
respectively judging the vision of the left eye and the right eye; transmitting the visual inspection prompt information to a subject terminal, transmitting laser indication optotypes through an optotype indication module, transmitting optotype inquiry information corresponding to the indication optotypes to the subject terminal through a video chat module when each optotype on the optotype indication module is indicated, pre-storing preset optotype answer information corresponding to the optotype inquiry information, and receiving the optotype answer information fed back by the subject terminal;
based on the received optotype answer information and preset optotype answer information, judging to continue vision judgment or stop, and acquiring vision of the testee when the judgment is stopped;
determining a correction lens power; calculating correction lens power according to the vision of the testee when the testee is stopped, grabbing lenses corresponding to the correction lens power, putting the lenses into a lens rotating module, respectively judging the vision of left and right eyes, and judging whether the correction lens power is proper or not based on the received optotype answer information and preset optotype answer information; when the correction lens power is not proper, adjusting the correction lens power, and grabbing a corresponding lens after adjusting the correction lens power until the correction lens power is judged based on the received optotype answer information and the preset optotype answer information until the correction lens power is proper;
performing astigmatism inspection; according to the clear identification condition of the astigmatism examination icon on the visual chart of the testee, the astigmatism lens with a certain degree is placed into the rotary lens rotary module through the focal power conversion module, the clear identification condition of the astigmatism examination icon by the testee after the astigmatism lens is added is obtained, and then the degree of the astigmatism lens is adjusted according to the clear identification condition of the astigmatism examination icon of the testee after the astigmatism lens is added is obtained until the corresponding astigmatism lens degree of the testee is measured.
A computer storage medium having stored thereon a computer program which, when executed by a processor, implements the remote optometry method.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, based on the video chat technology of the Internet, the remote optometry technology and service are sent to networking equipment such as a mobile phone, a tablet personal computer, a desktop computer and the like beside a tested person through an artificial intelligence technology, and the tested person can perform optometry through the intelligent mobile phone, the personal computer or the tablet personal computer at any place with network connection, so that the tested person does not need to go to an optometry mechanism in person; the 24-hour optometry service can be provided for the testee, the limitation of work hours or holidays is avoided, time and energy are saved, optometry efficiency is improved, and optometry cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the principle of operation of the remote refraction system of the present invention;
FIG. 2 is a schematic diagram of a remote optometry system according to the present invention;
FIG. 3 is a schematic diagram of the control principle of the intelligent control module of the remote optometry system according to the present invention;
FIG. 4 is a schematic flow chart of the remote optometry method of the present invention;
fig. 5 is a schematic diagram of the working principle of the video chat module of the remote optometry system according to the present invention;
FIG. 6 is a schematic diagram showing the structural components of a lens rotation module of the remote refraction system according to the present invention;
fig. 7 is a schematic diagram of the principle and structure of a height scaling module of the remote optometry system according to the present invention.
1, an intelligent control module; 2. a video chat module; 3. a lens rotation module; 4. a visual target indication module; 5. a height scaling module; 6. an eye chart module; 7. a front-rear linear driving part and a lens switching part of the focal power conversion module; 8. a lens zero position switch; 9. a lens rotating bracket; 10. whether the lens is provided with a switch or not; 11. a support base; 12. a rotary driving mechanism; 13. a lens clamping spring plate; 14. a cylindrical lens; 15. a stepping motor; 16. a speed reducer; 17 drive nuts.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Examples:
referring to fig. 1-7, the remote optometry system operates on the following principle: based on the video chat technology based on the Internet, the remote optometry technology and service are sent to networking equipment such as mobile phones, tablet computers and desktop computers and the like beside the testee through the artificial intelligence technology, and the technology can be also understood as 'transmitting the naked eyes of the testee to a remote optometry system to receive the inspection service of the optometry system', wherein the testee can perform optometry inspection at any time and any place selected by the testee, and the optometry process is completed without time and space limitation. In particular, the method comprises the steps of,
as shown in fig. 1, an intelligent control module 1 is used as a control center of a remote optometry system, and is connected with a microcontroller through an interface circuit in the module while being directly connected with a video chat module 2, and then is respectively connected with other modules except the video chat module 2 through the microcontroller;
the video chat module 2 is positioned at a moderate distance position opposite to the visual chart module 6, one end of the video chat module is connected with the intelligent control module 1 or embedded into the intelligent control module to be integrated, and the other end of the video chat module is connected with a subject through the Internet;
the lens rotating module 3 is positioned right in front of the camera of the video chat module 2 and close to the video chat module 2, and the rotating shaft of the lens rotating module is overlapped with the optical axis of the camera and is connected with the microcontroller of the intelligent control module 1 through a lead;
the lens switching part of the focal power conversion module is positioned at the side surface of the lens rotating module 3 so as to be convenient for switching lenses and not to influence the imaging position of the camera of the video chat module 2, the front and rear linear driving parts of the focal power conversion module are integrated with the lens rotating bracket 9 of the lens rotating module 3, and the two parts are respectively connected with the microcontroller of the intelligent control module 1 through leads;
the optotype indicating module 4 is positioned opposite to the visual acuity chart module 6 and near the lens rotating module 3, does not influence the movement of the lens rotating module 3, and is connected with the microcontroller of the intelligent control module 1 through a lead;
the height scaling module 5 is positioned between the video chat module 2 and the visual chart module 6 and is close to the video chat module 2, the optical axis of the height scaling module is coincident with the optical axis of a camera of the video chat module 2, the height scaling direction is coincident with the height (or length) direction of the visual chart on the visual chart module 6, and the height scaling module is connected with a microcontroller of the intelligent control module 1 through a wire;
the visual acuity chart module 6 is positioned right in front of the video chat module 2, the distance meets the national standard requirement, the visual acuity chart plane is perpendicular to the optical axis of the camera of the video chat module 2, and the visual acuity chart 1.0 or 4.0 is as high as the optical axis of the camera and is connected with the microcontroller of the intelligent control module 1 through a lead.
As shown in fig. 3, the intelligent control module 1 mainly comprises a computer, an interface circuit, a microcontroller and a voice recognition circuit. The computer is the center of the intelligent control module 1 and is provided with a window operating system, a serial port, a network port and a USB port; the interface circuit is responsible for data communication between the microcontroller and the computer; the voice recognition circuit is responsible for recognizing the voice meaning of the testee; the microcontroller is a control chip of the intelligent control module 1, directly controls the movement of the lens rotating module 3, the focal power conversion module, the sighting target indicating module 4, the height scaling module 5 and the sighting target module 6 through wires, and sends out voice prompts through a loudspeaker of the video chat module 2.
The video chat module 2 mainly comprises a camera, a microphone, a loudspeaker and chat software and is used for remotely connecting a person to be examined in different places, transmitting video images formed by the visual chart and the indication light spots and voice prompts sent by the intelligent control module 1, and simultaneously transmitting back video images and voice of the person to be examined; the camera is provided with a manual focusing lens, and an operator can adjust the focal length according to the distance between the camera and the visual chart; the microphone is integrated inside the camera; the speaker needs to be specially configured; the chat software is common chat software and is installed on a computer of the intelligent control module 1. The video chat module 2 can provide the image of the visual acuity chart superimposed with the indication light spots sent by the visual acuity chart indication module 4 and the voice prompt sent by the intelligent control module 1 for the testee, and simultaneously receive the image and the voice sent by the testee from different places and the screen capturing picture of the visual acuity chart on the mobile phone screen sent by the testee.
As shown in fig. 6, the lens rotating module 3 mainly comprises a lens rotating seat, a lens clamping spring 13, a rotation driving mechanism 12, a lens switch 10 and a lens zero switch. The lens rotating seat adopts the elastic sheet to clamp the lens, so that the lens is prevented from falling off; the rotary driving mechanism 12 can drive the lens rotary seat to rotate and then drive the lens to rotate together, and the rotation angle can be reachedThe lens presence/absence switch 10 is a general micro switch, and the states of the switch are different when the lens is present or not, so that whether the lens is present or not is detected; the lens zero position switch is a universal micro switch, and the switch closing position is the movement starting position of the lens rotating seat; the lens rotating seat is driven to rotate clockwise or anticlockwise according to a control instruction sent by the intelligent control module 1, and the angle is continuously adjustable.
The technical principle of the focal power conversion module is as follows: the focal power conversion module comprises a front-back linear driving part and a lens switching part (two parts in total), wherein the front-back linear driving part can drive the lens rotation module 3 and a lens with fixed focal power clamped on the lens rotation module to linearly move back and forth together, and the object distance is changed through linear movement, and the image distance is correspondingly changed, so that the size of an image obtained by a camera on the video chat module 2 is changed; the lens switching part can be used for grabbing lenses with different degrees through the manipulator and placing the lenses into the lens bracket on the lens rotating module 3, and can be used for taking the lenses out of the lens bracket on the lens rotating module 3 through the manipulator and placing the lenses into corresponding positions in the lens box; the roles of the two parts are identical (changing the image size), the difference being that: the front-rear linear driving section may continuously change the image size, and the lens switching section may not continuously change the image size because the minimum power difference between lenses is 25 degrees, and the imaged image size may not be continuous.
Specifically, the focal power conversion module mainly comprises a lens box, a three-dimensional manipulator, a lens with fixed focal power and a front-back linear driving mechanism. The lenses in the lens box comprise myopia lenses, hyperopia lenses, corresponding astigmatism lenses and the like, the number of the lenses is 50-300, and a lens switch 10 is arranged below each mirror, so that whether the lenses exist or not can be sensed; the three-dimensional manipulator can move in three dimensions, can grasp lenses with prescribed degrees from the lens box and put into the lens rotating seat, can also take out lenses from the lens rotating seat and put into corresponding positions in the lens box, has a movement range of 1000 multiplied by 800 multiplied by 500mm, and has adjustable movement speed. In order to reduce the manufacturing difficulty, the three-dimensional manipulator can be simplified into a combination of three-dimensional movements, and the functions of grabbing the lenses are the same as before. The front and back linear driving mechanism of the lens with fixed focal power comprises a driving motor and a linear driving device, and the focal power of the imaging system can be continuously changed.
The sighting mark indicating module 4 mainly comprises a laser indicator and a two-dimensional turntable, and drives the laser indicator to perform two-dimensional scanning motion through the two-dimensional turntable. The laser color is red, green or other colors, the light emitting power is less than 5mW, the diameter of a light spot is 3-5 mm, the working position of the visual target indication module 4 is used as a reference, the two-dimensional turntable is driven by two stepping motors 15 with mutually perpendicular rotating shafts, the motor transverse scanning range of the rotating shafts perpendicular to the ground is 500mm, the motor longitudinal scanning range of the rotating shafts parallel to the ground is 1500mm, the scanning precision is not more than 3mm, the laser can stay at any position in the scanning range, and visual targets or patterns for indicating different positions in the range of the laser and pointing visual charts can be sent out according to a control instruction sent out by the intelligent control module 1 for identification of a testee.
The height scaling module 5 mainly comprises a biconvex or plano-convex cylindrical lens 14 and a linear driving mechanism, the focal length of the lens is 5-5000 mm, the clear aperture is 5-250 mm, the movement range is 0-500 m, the amplitude amplification rate is-25%, and the specific position is determined according to the focal length of the selected lens and is approximately within the double focal length and outside the double focal length. The amplitude of the visual acuity chart can be enlarged or reduced through the reciprocating linear motion of the cylindrical lens 14 so as to adapt to the special condition that the visual acuity chart with the same height and width are displayed in different height and width ratios on the mobile phone display screen, and the optometry requirement that the height and the width of the same visual acuity chart are required to be equal is met. And adjusting the mobile phone screen capturing picture according to the measurement result from the subject or the sent from the subject.
The visual acuity chart module 6 is provided with a visual acuity chart which meets the regulations, and the visual acuity chart at least comprises a visual acuity chart and relevant parameters thereof. The relevant parameter refers to the mark scale of the optotype, for example, vision 1.5, etc. As a preferred embodiment, the visual acuity chart and the illumination light source can be formed, wherein the height and width of the visual acuity chart, the height and width of each visual acuity chart, the background brightness and the contrast meet the national standards. The system has the checking functions of myopia, remote, astigmatism, overcorrection, undercorrection and the like, the background brightness and the contrast of the sighting target accord with the national standard, and the distance from the video chat module 2 camera is moderate.
Referring to fig. 2, the installation process and connection manner of each module of the remote optometry system will be mainly described.
First, the visual chart module 6 is installed on the selected plane wall, and the space posture is adjusted to enable the visual chart plane of the visual chart to be perpendicular to the ground and the visual charts in the same row to be basically parallel to the ground.
And secondly, placing the intelligent control module 1 at the position with a distance of about 5 meters opposite to the visual chart module 6, and enabling a computer screen of the intelligent control module to face the visual chart module 6.
Thirdly, fixing the video chat module 2 on a bracket between the visual chart module 6 and the intelligent control module 1; if the camera of the video chat module 2 can be fixed on the computer screen of the intelligent control module 1, the camera can be directly fixed on the computer screen, the height of the visual chart module 6 is adjusted to enable the 1.0 or 4.0 visual target height to be basically same as the optical axis of the camera of the video chat module 2, and then the position of the camera is adjusted to enable the optical axis of the camera to be perpendicular to the visual target plane of the visual chart module 6.
And fourthly, installing a lens rotating module 3 on the front of the video chat module 2 or on a camera of the video chat module 2 so that the rotating shaft of the lens rotating module is overlapped with the optical axis.
And fifthly, installing a height scaling module 5 between the lens rotating module 3 and the visual chart module 6, so that the plane of the plano-convex cylindrical lens 14 is perpendicular to the optical axis of the camera, and the optical axis passes through the geometric center of the light inlet plane.
And sixthly, facing the visual acuity chart module 6, installing a visual acuity chart index module on the right side of the video chat module 2 and the lens rotation module 3, and adjusting the spatial posture of the visual acuity chart module so that the scanning range of the visual acuity chart module can cover the whole visual acuity chart plane area.
Eighth, facing the eye chart module 6, installing a power conversion module on the left side of the video chat module 2 and the lens rotation module 3, wherein the power conversion module comprises a front-back linear driving part and a lens switching part 7 of the power conversion module, and the front-back linear driving part of the power conversion module is integrated with a lens rotation bracket 9 of the lens rotation module; the three-dimensional manipulator can grasp the lens from the lens box without obstacle, take the lens out of the lens rotating module 3, put the lens back to the original position in the lens box, or drive the lens with fixed focal power to move linearly back and forth.
And ninth, after each module is installed in place, connecting the signal wires and the power wires between the modules and the loudspeaker of the video chat module 2.
Referring to fig. 3, fig. 3 shows a control principle of the intelligent control module 1, wherein a computer (such as a notebook computer, an all-in-one computer, a desktop computer, or a tablet computer) is used as a base of the intelligent control module 1, and the microcontroller is connected with the computer through an interface circuit and receives instruction control of the computer; the microcontroller is respectively connected with the focal power conversion module, the lens rotation module 3, the optotype indication module 4, the height scaling module 5 and the visual acuity chart module 6 through leads and directly controls the movement of the optotype indication module; the voice recognition circuit is directly connected with the computer and is used for recognizing the actual meaning of the speech of the testee transmitted back by the video chat module 2, and the voice recognition circuit can adopt the prior art, such as a voice recognition chip, an artificial intelligent module and the like. Storing answers corresponding to the indication positions of the optotype indication modules 4 in a computer in advance, and judging whether the answers of the testees are correct or not through a program; the video chat module 2 comprises a camera, a loudspeaker, a microphone and other devices. The video chat module 2 is directly connected with or integrated in a computer.
Referring to fig. 5, the hardware of the video chat module 2 includes a camera, a microphone and a speaker, wherein the microphone is integrated in the camera. These hardware are directly connected to the computer. The video chat module 2 transmits the image synthesized by the visual chart of the visual chart module 6 and the indication light spots of the visual chart indication module 4 and the prompt sound sent by the intelligent control module 1 to the equipment of the testee, and simultaneously receives the image, the picture and the sound information sent by the testee to create the immersive optometry feeling.
Referring to fig. 6, the structural schematic diagram of the lens rotating module 3 is shown in fig. 6, wherein the lens rotating module 3 includes a lens rotating seat, a lens clamping spring 13, a rotation driving mechanism 12, a lens on-off switch 10 and a lens zero switch 8, and the lens rotating module 3 is designed to meet the astigmatism requirement. The lens rotating bracket 9 of the lens rotating module 3 is cylindrical, and can be fixed on a camera or independently fixed; the lens rotating seat comprises a supporting seat 11 and a lens rotating bracket 9 positioned on the supporting seat, and three clamping elastic sheets are arranged on the inner ring of the lens rotating bracket 9 and can clamp the lens to rotate together; the outer ring of the lens rotating bracket 9 is fixedly provided with a rotating driving mechanism 12, and the lens clamping elastic sheet 13 is driven to rotate through a gear. The intelligent control module 1 sends out a control signal to rotate the driving mechanism 12, then drives the lens clamping elastic sheet 13 to rotate together with the lens, the rotating direction can be positive or negative, and the rotating angle is controllable. A lens presence/absence switch 10 is arranged at the lower left part and is used for detecting whether the lens is present or not; a lens zero position switch is arranged right above the lens zero position switch and is used for indicating the rotation zero position of the lens.
Fig. 7 is a schematic diagram of the principle structure of the height scaling module 5, the plano-convex cylindrical lens 14 with the clear aperture larger than the imaging aperture of the camera is fixed on a driving nut 17, the driving nut 17 is sleeved on the threaded output shaft of the speed reducer 16 of the stepping motor 15, the driving nut 17 and the stepping motor 15 are installed on the same base, the stepping motor 15 can only rotate and can not move, the driving nut 17 can only move linearly and can not rotate, the intelligent control module 1 sends a control signal to drive the stepping motor 15 to rotate, and then the driving nut 17 is driven to move linearly, so that the cylindrical lens 14 moves back and forth along the optical axis direction, and the amplitude of the visual chart is enlarged or reduced.
Referring to fig. 4, in practical application, the refraction method of the present invention has the following steps:
after the remote subject establishes video chat with the remote optometry system, an eye chart image appears on the screen of the chat equipment of the subject, an image of one end of the subject appears on the screen of the remote optometry equipment, registration is firstly carried out, related information such as the name, age, sex, occupation and the like of the subject is input into the system, and then optometry is started.
Firstly, the control program sends out a prompt sound of 'please measure the height and width of the view', the examinee sends the screen shot of the mobile phone back to the remote optometry system, or answers through voice after the measurement of the ruler, and the system automatically controls the height scaling module 5 to move back and forth according to the difference between the height and the width of the picture or the voice analysis, so that the height scaling module and the voice scaling module are equal.
Secondly, the control program sends out a prompt tone for checking naked eyes to prompt the examinee to take out eyes and cover the left eyes, the optotype indication module 4 sends out laser to indicate optotypes from top to bottom, one optotype inquires the notch direction of the examinee, and the examinee answers; the system makes a judgment of whether to continue to identify downwards or stop according to the answer accuracy of the testee, stops checking after reaching the vision limit, records the current vision of the testee, releases the left eye to cover the right eye, and repeats the steps.
And thirdly, judging that the testee is myopia or hyperopia by the control program, correcting the degrees of the lenses according to vision calculation, commanding the power conversion module to grasp the lenses with corresponding degrees and put the lenses into the lens rotation module 3, then sending out prompt tones of 'please accept optometry at the position of a vertical visual chart screen and a distance x cm', carrying out vision inspection according to the naked eye optometry program according to the sequence of right eye, left eye and right eye, wherein the degrees of the lenses are reduced by more than one degree, and the degrees of the lenses are increased by less than one degree until the vision is proper.
Fourth, entering an astigmatism checking link, according to the sequence of right eye and left eye, the system sends out an 'please see astigmatism icon' prompt tone to inquire about the identification condition of the testee, if the lines are not clear enough, astigmatism exists, the control program directs the power conversion module to grasp the astigmatism lens with smaller degree, the astigmatism lens is placed into the lens rotation module 3 and rotated to the vertical direction of the line which is clear by the testee, the line definition condition of the testee is inquired, when the astigmatism degree is not clear enough, the astigmatism degree is increased through the lens rotation module 3, when the astigmatism degree is too clear, the astigmatism degree is reduced through the lens rotation module 3 until the astigmatism lens is moderate, finally, the astigmatism lens is rotated positively and negatively, the line definition change condition is inquired, and the clearest astigmatism lens is found
And fifthly, guiding the testee to look at red and green icons on the visual chart according to the sequence of the right eye and the left eye, and rechecking the undercorrection and overcorrection conditions of the matched lenses, wherein for a myopia testee, if the red clearly shows that the lens power is low, the green clearly shows that the lens power is high, and for a hyperopic testee, if the red clearly shows that the lens power is high, the green clearly shows that the lens power is low.
Through the steps, the lens matching parameters of the testee can be determined, and finally, the optometry prescription is given.
The present invention also provides a computer storage medium having a computer program stored thereon, in which the method of the present invention can be stored if implemented in the form of software functional units and sold or used as a stand-alone product. Based on this understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer storage medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer storage media may be suitably augmented or reduced according to the requirements of jurisdictions in which such computer storage media do not include electrical carrier signals and telecommunications signals, such as in certain jurisdictions, according to jurisdictions and patent practices.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the invention as defined in the appended claims.
Claims (6)
1. A remote optometry system, comprising: the visual testing device comprises an intelligent control module, a video chat module, a lens rotation module, a focal power conversion module, a visual target indication module and an visual chart module;
the intelligent control module is respectively connected with the lens rotating module, the focal power conversion module, the visual target indication module, the height scaling module and the visual chart module, and controls the lens rotating module, the focal power conversion module, the visual target indication module and the visual chart module to move; the intelligent control module is connected with the video chat module or integrated with the video chat module embedded into the intelligent control module, and the intelligent control module is connected with the terminal of the detected person through the video chat module;
the lens rotating module is arranged between the video chat module and the visual chart module and used for clamping the lens; the lens rotating module can rotate, and the rotating shaft of the lens rotating module is coincided with the optical axis of the camera of the video chat module;
the focal power conversion module is used for driving the lens rotation module and the lens with fixed focal power on the lens rotation module to move back and forth together and grabbing the lens with required degree, and putting the lens into the lens rotation module or taking the lens out of the lens rotation module; the power conversion module comprises a front-back linear driving part and a lens switching part, and the front-back linear driving part of the power conversion module is integrated with a lens rotating bracket of the lens rotating module;
the video chat module is positioned right opposite to the visual target on the visual chart module; the video chat module at least comprises a camera, acquires an eye chart of the eye chart module through the camera, and sends light spots formed on the eye chart by the eye chart and the eye chart indication module and voice prompt information of the intelligent control module to a tested person and receives feedback information of the tested person;
the optotype indication module is used for emitting laser, and the laser can form light spots for indicating optotypes on the optotype module;
the visual acuity chart module is provided with a visual acuity chart which accords with national regulations, and the visual acuity chart at least comprises a visual acuity chart and relevant parameters thereof;
the intelligent control module comprises a computer, an interface circuit, a microcontroller and a voice recognition circuit, wherein the voice recognition circuit is connected with the computer, the computer is connected with the microcontroller through the interface circuit, and the microcontroller is respectively connected with the lens rotating module, the focal power conversion module, the sighting target indicating module, the height scaling module and the visual chart module;
the lens rotating module comprises a lens rotating seat, a lens clamping elastic piece, a rotating driving mechanism, a lens switch and a lens zero position switch, wherein the rotating driving mechanism can drive the lens rotating seat to rotate positively and negatively, the lens clamping elastic piece is used for clamping the lens, the lens rotating seat comprises a supporting seat and a lens rotating support located on the supporting seat, the lens clamping elastic piece, the lens switch and the lens zero position switch are all arranged on the lens rotating support, the lens switch adopts a micro-switch, the lens switch is used for detecting whether the lens is or not, the lens zero position switch adopts the micro-switch, and the lens zero position switch is used for detecting the movement position of the lens rotating seat.
2. The remote optotype system of claim 1, wherein the optotype indication module comprises a laser pointer and a two-dimensional turntable, the two-dimensional turntable drives the laser pointer to perform a two-dimensional scanning motion, and the two-dimensional scanning motion sequentially emits all icons in a front area of the optotype module.
3. The remote optometry system of claim 1, wherein the power conversion module comprises a lens case, a three-dimensional manipulator and a front-rear linear drive mechanism for fixing the power lenses, the three-dimensional manipulator being used for grabbing lenses of a required power in the lens case and placing the lenses in a lens rotating seat or taking out the lenses from the lens rotating seat and placing the lenses in corresponding positions of the lenses in the lens case; the front-back linear driving mechanism of the lens with fixed focal power is used for driving the lens with fixed focal power to move linearly back and forth.
4. The remote optometry system of claim 1, wherein the video chat module comprises a camera, a microphone and a speaker for capturing the visual acuity chart, and wherein chat software is installed on the video chat module, wherein the visual acuity chart plane is perpendicular to the camera optical axis of the video chat module, and wherein the 1.0 or 4.0 optotype of the visual acuity chart is at the same height as the camera optical axis.
5. The remote optometry system of claim 1, further comprising a height scaling module for magnifying or reducing the height of the eye chart, the optical axis of the height scaling module coinciding with the camera optical axis of the video chat module, the height scaling direction of the height scaling module coinciding with the height or length direction of the eye chart on the eye chart module, the height scaling module being connected to the intelligent control module.
6. The remote vision inspection system of claim 5, wherein the height scaling module comprises a biconvex or plano-convex cylindrical lens and a linear drive mechanism, the height scaling module being located between the vision chart module and the lens rotation module, the linear drive mechanism driving the cylindrical lens to reciprocate linearly to zoom in or out on the height of the vision chart.
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