CN108542726B

CN108542726B - Visual training device and wearing device provided with same

Info

Publication number: CN108542726B
Application number: CN201810519231.1A
Authority: CN
Inventors: 刘博韬
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-25
Filing date: 2018-05-25
Publication date: 2020-05-22
Anticipated expiration: 2038-05-25
Also published as: CN108542726A

Abstract

A vision trainer, a display module configured to be responsive to at least a control signal generated by a central processing module to implement a vision training strategy in a manner of: reproducing the second image information in such a manner that at least the degree of blur, position and/or transparency of the image features can be changed to different degrees so that the second image information displayed to the left and right eyes are different from each other; and in the case where the visual state evaluation values of the left and right eyes are different from each other, displaying the second image information corresponding to the eye having the larger visual state evaluation value in such a manner as to increase the difficulty of identification thereof so that the user recognizes the second image information to a greater extent depending on the eye having the smaller visual state evaluation value. The visual trainer can generate different training schemes aiming at the left eye and the right eye based on the visual difference of the two eyes, thereby effectively avoiding the aggravation of the visual difference of the two eyes.

Description

Visual training device and wearing device provided with same

Technical Field

The invention belongs to the technical field of auxiliary medical instruments, and particularly relates to a visual trainer and a wearing device with the same.

Background

Visual training is personalized training for improving visual function and visual performance, and specifically comprises the following steps: firstly, the method is an advanced training mode of visual defects, and common visual defects including abnormal visual information processing, abnormal visual and motor coordination, rehabilitation of vision after brain trauma or shock and the like can be overcome through visual training; secondly, vision training is also a vision training method, which enables the patient to learn a more effective method so as to perform better in the aspect of vision, so that it is an art and science of vision care; thirdly, the visual training can improve the visual information processing capacity and the capacity of watching moving objects for a long time, is very beneficial to the students and the adults to use computers and read, and can be relieved through the visual training especially for common symptoms such as visual fatigue, headache caused by vision, incapability of watching when working with higher requirements on vision, getting lost, wrong order reversing and the like which are caused by insufficient visual skills and poor reading habits, namely the visual training is beneficial to better development of vision; finally, visual training is also an effective method for improving amblyopia, which is also a visual defect, not only manifested as low vision and imperfect visual function in many aspects, but also can be effectively trained through visual training.

Traditional vision training is performed under the guidance of an expert or doctor. The expert or doctor needs to perform multiple visual function tests on the patient, such as binocular vision test, binocular refraction test, gazing property test, contrast sensitivity test, simultaneous vision function test, fusion function test, stereoscopic vision function test and the like, and provides a visual training scheme according to the test data and the judgment of the expert or doctor. The vision training method has strong dependence on experts or doctors, and cannot be replaced by others. Meanwhile, the pure manual operation mode is not efficient, and one expert and doctor can only process dozens to hundreds of cases at most in one day, and the requirements of numerous patients cannot be met.

At present, a system for automatically generating a visual training scheme has appeared, in which a logic management module sends a request for adding medical records to a server according to input of a medical record input form, and the server realizes automatic generation of the visual training scheme according to the request, so that medical staff can conveniently and quickly make a reasonable visual training scheme according to the condition of a patient. However, this system is somewhat inadequate in considering the personalized needs of the user, and the generated training scheme is sometimes not targeted enough.

Patent document CN106646916A discloses glasses with an emmetropic direction dynamic zoom function and a method for using the same, wherein the variable-focus glasses comprise: existing and future available zoom glasses, wherein existing zoom glasses: the zoom glasses comprise zoom glasses with front and back movable lenses, zoom glasses with transverse movable lenses, electro-wetting effect zoom glasses with two kinds of fluid filled in the lenses, double-cavity zoom glasses with two kinds of liquid filled in the lenses, single-cavity zoom glasses with one kind of liquid filled in the lenses and 3D mobile phone zoom glasses. The dynamic slight defocusing in the direction of the emmetropic eye of the variable-focus glasses induces the axis of the informal eye to gradually return to the state of the emmetropic eye. The training device can not carry out targeted training according to the difference of the vision states of the two eyes, reduce the difference of the two eyes in a mode of training weak eyes independently, and can not exercise the coordination of the two eyes.

Disclosure of Invention

The word "module" as used herein describes any type of hardware, software, or combination of hardware and software that is capable of performing the functions associated with the "module".

In view of the deficiencies of the prior art, the present invention provides a vision trainer comprising at least a display module communicatively coupled to a central processing module. The central processing module is configured to: the current visual state evaluation value of the user is determined based on the acquired first image information. When the visual state evaluation value is lower than a threshold value D₁In the case of (2), the central processing module. Generating a strategy for performing vision trainingA control signal, wherein the display module is configured to be responsive to the control signal at least in the following manner: the second image information is reproduced in such a way that the degree of blur, the position and/or the transparency of the image features can be changed at least to different extents so that the second image information displayed to the left and right eyes are differentiated from each other. And in the case where the visual state evaluation values of the left and right eyes are different from each other, displaying the second image information corresponding to the eye having the larger visual state evaluation value in such a manner as to increase the difficulty of identification thereof so that the user recognizes the second image information to a greater extent depending on the eye having the smaller visual state evaluation value.

According to a preferred embodiment, the display module is arranged in an operating mode in which its display is viewable through at least one lens whose linear distance can be increased or decreased. The lens responds to the control signal by changing its optical parameters and its linear distance from the display module, wherein the optical parameters include at least optical power, and the optical parameters and the linear distance are changed in a matching manner such that the linear distance equals the focal length of the lens.

According to a preferred embodiment, the method for increasing the difficulty of identifying the second image information at least comprises the following steps: the blurriness and/or transparency of at least one image feature in the second image information is increased. Reducing the size of the at least one image feature relative to other image features and matching the optical parameters in a manner that increases the linear distance.

According to a preferred embodiment, the first image information is image information and/or video information of both eyes taken over a certain period of time. The visual state assessment value can be used at least to assess the degree of eye fatigue or the visual normality, wherein the visual state assessment value is used to assess the degree of eye fatigue and the visual state assessment value is smaller than the threshold value D₁In the case of (2), the second image information is a real-time image of the surrounding environment that can be seen by both eyes of the user based on the current visual axis in a naked-eye situationLike the information. And the real-time image information is respectively displayed to the left eye and the right eye through the display module at least according to the modes of brightness adjustment, denoising and/or image quality enhancement.

According to a preferred embodiment, the visual state assessment value is used for assessing the visual normality and is below the threshold value D₁In this case, the second image information is a plurality of visual images displayed in a form of a game, a video, a still image, a 3D image, a dynamic image, and/or a rendered background, which are different from each other in the degree of blur, position, transparency, and/or size of image features preset in the vision trainer, wherein the vision training strategy is generated in such a manner that the visual images are periodically displayed.

According to a preferred embodiment, the evaluation of the visual state is used to evaluate the degree of eye fatigue and the evaluation of the visual state is less than the threshold value D₁In the case of (1), the visual image is displayed to the eye whose visual state evaluation value is small, and the real-time image information is displayed to the eye whose visual state evaluation value is large, wherein the visual image and the real-time image information are displayed at intervals of a time period T₁And then alternately displayed to both eyes in an alternating fashion with each other.

According to a preferred embodiment, the vision trainer further comprises an environment monitoring module communicatively coupled to the central processing module, wherein the environment monitoring module acquires the real-time image information in such a way that the field of view thereof is the same as the field of view of both eyes of the user in a naked view.

According to a preferred embodiment, the vision trainer further comprises an eye use state evaluation module communicatively coupled to the central processing module, wherein the eye use state evaluation module is capable of extracting at least a blink frequency, a pupil size, an eye congestion level and/or an eye movement state of the user in the first image information it acquires to evaluate a fatigue level of the eye; the eye state evaluation module can at least extract the eyeball position, the eyeball turbidity and/or the curvature radius of the crystalline lens of the user in the acquired first image information so as to evaluate the vision normality state of the eyes.

The invention also provides a wearing device equipped with the vision trainer according to one of the preceding claims, the wearing device comprising at least a first outer frame and a second outer frame, wherein the shape of the first outer frame is defined by a rectangular parallelepiped shape which is hollow and has one open end face. The visual training device can be arranged in a hollow cavity of the first outer frame in a modular integration mode, wherein the display module is arranged on the other end face of the first outer frame, which is parallel to the open end face of the first outer frame. The lens is built in a hollow cavity of the first outer frame through a sliding pair in a manner that the focusing direction of the lens is perpendicular to the open end face. The second outer frame is connected to the first outer frame in such a manner as to close the open end face.

According to a preferred embodiment, the wearing device further comprises a plurality of belts for fixing the wearing device on the eyes and a fixing ring for fixing the lenses, wherein the plurality of lenses are fixed inside the fixing ring in a circumferential surrounding manner, so that the lenses can rotate around the axis of the fixing ring. The second outer frame is provided with at least two through holes matched with the two eyes, so that after the fixed circular ring is rotated to select the appointed lens, the two eyes can sequentially observe the display content in the display module through the through holes and the lens.

The invention has the beneficial technical effects that:

(1) the vision trainer can pertinently modify the content displayed by the display module according to the eye state and/or the vision state of the user to configure the display image capable of improving the current eye state and/or the vision state, exercise and/or massage can be carried out on eyes through the display image, and the problems of vision deterioration, vision fatigue and the like can be effectively relieved.

(2) The visual trainer is internally integrated in the outer frame, has a simple structure, small volume and strong use convenience, can be continuously used for a period of time like wearing glasses, and has the characteristics of high exercise intensity and timely exercise compared with other visual trainers.

(3) The vision trainer can generate different training schemes for the left eye and the right eye based on the visual difference of the two eyes, and can intensively train and/or protect the eyes with worse states, so that the aggravation of the visual difference of the two eyes is effectively avoided.

Drawings

FIG. 1 is a schematic diagram of a preferred vision trainer of the present invention;

FIG. 2 is a mechanical schematic diagram of the rotational switching of the preferred lens of the present invention;

FIG. 3 is a schematic view of a preferred wearable device equipped with a vision trainer in accordance with the present invention;

FIG. 4 is a schematic view showing the connection relationship between the modules of the preferred wearable device of the present invention; and

FIG. 5 is a schematic view of a preferred belt of the present invention.

List of reference numerals

1: the environment monitoring module 2: the central processing module 3: display module

4: lens 5: with eye state evaluation module 6: outer casing

7: fixing the circular ring 8: first outer frame 9: second outer frame

10: through hole 11: first image collector 12: sliding rail

13: the second image collector 14: the communication module 15: memory module

16: the power supply module 17: the drive module 18: binding belt

7 a: inner ring 7 b: outer ring

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

Example 1

Fig. 1 shows a schematic structural diagram of a visual training device, as shown in fig. 1, the visual training device at least comprises an environment monitoring module 1, a central processing module 2, a display module 3, a lens 4, an eye use state evaluation module 5 and a shell 6. The environment monitoring module 1, the central processing module 2, the display module 3, the lens 4 and the eye use state evaluation module 5 are all fixed on the shell 6. The environmental monitoring module 1 and the eye state evaluation module 5 are both communicatively coupled to the central processing module 2 to transmit the data collected by them into the central processing module 2 for processing and generating control signals for controlling the display module 3 and the lens 4. The environment monitoring module 1 can be used to collect image data of the surrounding environment and transmit it to the display module 3 for display in real time. The environment monitoring module 1 acquires image data in a manner that simulates an image of a real scene that an eye can see without the use of a vision trainer. For example, the environment monitoring module may collect image data in the current environment through an image collector, such as a video camera or an infrared camera or a miniature camera equipped with different types of lenses, wherein the collecting direction and the reachable view range of the image collector are consistent with the direction of the eyes of the current user and the view range thereof, so that the vision trainer can completely transplant the real scene image into the display module at a specific moment. Furthermore, when the special moment that the eyes of the user are in a fatigue state and need to be relieved is detected, for example, the vision trainer can enable the eyes of the user to be in a closed vision recovery environment without being interfered by the external environment, when the eyes of the user are exercised in an eye health care operation mode through the display module to relieve the eye fatigue, the user can still sense the surrounding environment according to the real scene image, and the user can relieve the eye fatigue in the walking process, the driving process or the working process.

Preferably, the eye state evaluation module 5 is used for evaluating the state of the eyes of the user, for example, the fatigue state or the attention focusing state of the eyes can be evaluated. The eye state evaluation module can be used for collecting the image information of the eyes by a video camera or a miniature camera equipped with different types of lenses and evaluating the current state of the eyes according to the image information of the eyes. The eye state evaluation module can at least extract the blinking frequency, the pupil size, the hyperemia of the eyes and the like of the user according to the acquired image information of the eyesThe eye movement situation evaluates the fatigue state of the eyes. For example, when a person is in a fatigue state, the blinking speed is slowed, the eye closing time is lengthened, so that the ratio of the number of image frames of which the eyes are in a closed state to the total number of image frames can be calculated, a threshold value is further set to judge the fatigue state of the eyes, and when the ratio exceeds the threshold value, the eyes are in the fatigue state. Preferably, the visual state evaluation value is determined based on ergonomics. For example, the visual state evaluation value may be determined in terms of the number of normal blinks per minute being 15 to 20, where the initial value of the visual state evaluation value is set to zero to indicate that the eyes are in a non-tired state. When the number of blinks is less than one-third of the number of normal blinks, the visual state assessment value may be set to-1 to indicate that the eyes are in a light fatigue state. When the number of blinks is less than one-half of the normal number of blinks, the visual state assessment value may be set to-2 to indicate that the eyes are in a moderate fatigue state. Threshold value D₁May be set to-2 to ensure relief when the eyes are in a state of moderate fatigue.

Preferably, the display module 3 and the lens 4 are connected to the housing 6 in such a way that the distance between them can be adjusted, wherein the display module 3 is fixed to the housing 6 in a positionally fixed manner and is fixed thereto by means of an adhesive, screw connection, snap connection or rivet connection. The display module 3 can assume a completely transparent form when in the inoperative state, so that a user can observe the surroundings through the display module. The display module may be a flexible display screen. The lens 4 is fixed to the housing 6 by a sliding pair, and is closer to the user's eye than the display module in the eye-gaze direction. Meanwhile, in the use state of the vision trainer, the eyes, the lenses and the display device are always kept in a collinear state, so that a user can check the content displayed in the display module only through the light refraction effect of the lenses. The lens 4 can be configured as different lenses according to different vision conditions. For example, for myopic eyes, concave lenses may be provided, and for presbyopic eyes, convex lenses may be provided.

Preferably, in the case where the distance between the lens and the display module is changed, the optical parameters of the lens are set to be adaptively changeable in such a manner as to match the distance between the lens and the display module. The optical parameter that can be adaptively changed comprises at least the optical power. For example, the lens may have a fluid-filled film attached to its surface, and the fluid with different pressures enters the filled film to make the filled film have different shapes, so that the change of the optical power of the lens can be realized. The lens can also be filled with liquid crystal molecules which can be arranged into different electric field shapes, and the focal power of the lens can be changed by adjusting the arrangement of the liquid crystal molecules. Preferably, the plurality of lenses with different focal powers are matched with the distance between the lenses and the display module through the revolute pairs in a rotary switching manner.

Specifically, fig. 2 shows a mechanical structure diagram of the lens for rotational switching. As shown in fig. 1 and 2. The lens 4 with different focal powers is arranged on the inner surface of a fixed ring 7, a groove matched with the radian of the fixed ring is formed in the shell 6, and the fixed ring is connected with the shell in a sliding mode in a clamping mode in the groove, so that the fixed ring can rotate around the axis of the fixed ring. The plurality of lenses 4 are fixed on the inner surface of the fixed circular ring in a mode of surrounding the axis of the fixed circular ring by 360 degrees, wherein the working surfaces of the lenses are perpendicular to the axis direction of the fixed circular ring, the geometric center of at least one lens can be positioned on the same horizontal plane with the geometric center line of the display module, and therefore the eyes, the lenses and the display module can be positioned on the same horizontal straight line, and the eyes can completely observe contents displayed on the display module through the lenses.

For ease of understanding, the working principle of the vision trainer of the present invention will be discussed in detail below with reference to a specific use scenario.

Preferably, the user can connect the vision trainer of the invention with glasses worn by the user in a clip manner, such as movie theater 3D glasses. The glasses that the user wore can be set up to the mode that the lens can freely be dismantled, demolish the lens of glasses when wearing the vision training ware on user's self glasses to the influence to vision recovery has been avoided because the vision pseudotype that glasses self had is corrected. After the visual trainer and the glasses are connected and fixed, a user needs to input information of two eyes of the user into the visual trainer for configuration, and the information of the two eyes at least comprises naked eye vision grade. After the vision trainer receives the information of the two eyes, the optical parameters of the lens and the distance parameters between the lens and the display module are configured, so that a user can see clear environment information under the condition of using the vision trainer.

Preferably, the vision trainer has three use states: the visual training device comprises a first use state, a second use state and a third use state, wherein the first use state is a common use state of the visual training device, namely the visual training device has the function similar to that of common glasses, and can improve the visual state of an invisible object caused by myopia or hyperopia. In a first use state of the vision trainer, the environment monitoring module and the eye use state evaluation module are both in a non-working state, and the vision trainer pre-configures optical parameters of the lens and the distance between the lens and the display module according to information of eyes input by a user, so that the configuration is matched with the degree of naked eyes, for example, of the eyes of the user, and the user can obtain a clear view.

Preferably, the second use state of the vision trainer is a massage state. A user with an eye defect, such as at least one of myopia, hyperopia, strabismus or amblyopia, does not use the vision trainer of the present invention all the time in daily work and life. The user may use the visual training aid to massage the eyes at an appropriate time, such as feeling discomfort or having a rest at night when returning home. The massage is carried out in a mode that the display module displays different image contents to promote the movement of the eyeballs or promote the relaxation of the crystalline lenses of the eyeballs. Preferably, the eye movement can be prompted by displaying the moving image features in a display module, the display module 3 being capable of displaying a background of a certain fixed color, for example red, blue, green, and displaying the moving image features again on the basis of the background color. The image characteristics can move according to the mode of regular motion trail on the display screen to drive the eyeball to move left and right and up and down, so that the state of the eye muscle can be effectively changed. Preferably, the eyeball is prompted to alternately look at the display content in the display module in a far-near mode by matching the optical parameters of the lens with the distance between the lens and the display module. Specifically, the display module 3 may display a still image feature, and during the process of observing the still image feature through the lens by the user, the lens can be automatically switched based on a certain time interval, that is, the current lens with the first focal power is switched to the lens with the second focal power, and the first focal power and the second focal power are two parameters different from each other. Still image features viewed by the user through the lens become blurred at this point due to the change in lens power, and the distance between the lens and the display module needs to be adaptively increased or decreased in order for the still image features to become sharp again. In the above process, the user's crystalline lens is in one form when viewed using a lens of a first power and in another form when viewed using a lens of a second power. In addition, in the process of moving the lens with the second focal power, the crystalline lens of the user is in a constantly changing form, so that the form of the crystalline lens of the user is effectively improved, and the eye fatigue can be effectively relieved.

Preferably, the third use state of the vision trainer is a real-time monitoring adjustment state. The user needs to continue using the vision trainer for a certain period of time. For example, a user can continuously wear the vision trainer in a mode of wearing glasses in daily work or learning, and an environment monitoring module, a central processing module and an eye use state evaluation module of the vision trainer are in a real-time working state.

Specifically, the environment monitoring module may monitor light intensity in an environment, when it is detected that current light intensity is greater than a certain threshold value and may damage eyes, the central processing module controls color or transparency of the display module to weaken illumination intensity entering the eyes, or the environment monitoring module collects image information at a current viewing angle in real time through the image acquisition device and transmits the image information to the display module in real time to display, and at this time, the transparency of the display module may be adjusted to zero so that a user may completely rely on the image information acquired by the image acquisition device to perceive a surrounding environment state without being affected by strong illumination.

The environment monitoring module may also monitor the current visual condition of the user, such as the size of fonts in a cell phone screen or book observed by the user, the distance for glasses from the cell phone screen or book, the brightness difference of the target observed by the user from the surrounding environment, or the angle between the user and the observed target. The visual trainer can generate alarm information to remind a user of correcting wrong eye use habits in time when judging whether the current visual conditions of the user can effectively judge whether the user is in a bad eye use habit or not. For example, based on the generated alert information, the user may be notified to increase the display font in the cell phone, decrease the brightness of the cell phone screen, or change the angle and distance to the cell phone screen. The vision trainer is also able to actively correct the vision conditions by displaying the corrected image information in the event that the user is in poor eye use. For example, when a user watches a small-font article in a book in sunlight with strong illumination intensity, the image collector of the environment monitoring module 1 reduces the contrast of the collected graphic information and increases the font, and then the graphic information is displayed to the user through the display module 3 for viewing, so that the visual condition of the user is actively changed.

Preferably, in the third use state of the vision trainer, the environment monitoring module and the eye use state evaluation module can also cooperate with each other. Specifically, the eye state evaluation module determines the use states of the two eyes of the user through image data acquired by the image acquisition device facing the eyes of the user. For example, the image of the congestion of the eyes of the user can judge that the user is in an eye overuse state and the eyes are in urgent need of rest. Under the condition that the glasses are determined to be in urgent need of rest, the importance of the current eye use occasions of the user is monitored through the environment monitoring module, and different fatigue relieving schemes are formed aiming at the eye use occasions with different importance degrees. For example, in the case where the user is participating in an important meeting or a lecture, after the degrees of fatigue of the left and right eyes are evaluated by the eye evaluation state evaluation modules, respectively, different image contents are displayed in the display modules corresponding to the left and right eyes. For example, when the fatigue level of the left eye is higher than that of the right eye, the vision trainer may reduce the transparency of the display module corresponding to the left eye and display therein, for example, an image that alternates between near and far, so that the left eye improves its lens tension. Meanwhile, all the image information acquired by the image acquisition device of the environment monitoring module is displayed in the display module corresponding to the right eye, so that the user can sense the surrounding environment state through the right eye with low fatigue degree. Preferably, the visual training aid may directly minimize the transparency of the display module to force the user to rest in the daily work or study of the user. Preferably, the visual training device generates the fatigue relieving scheme based on the environment monitoring module and the eye state evaluation module, and before the fatigue relieving scheme is executed, the user can be reminded through voice or image playing and the fatigue relieving scheme can be continuously executed under the condition that the user execution permission is obtained.

Preferably, the second image information includes several image features, and the image features may be any object or person in the environment. Reducing the size of at least one image feature relative to the other image features and matching the optical parameters in a manner that increases the linear distance can enable the eye to simulate the process of looking at a distant object, thereby enabling the ciliary body morphology to be adjusted. The ocular state evaluation module 5 can also extract at least the eyeball position, the eyeball turbidity and/or the curvature radius of the crystalline lens of the user in the first image information acquired by the ocular state evaluation module to evaluate the ocular normality state of the eye. For example, the positions of the eyeballs of the two eyes when viewing the image features at the same position in the display module are compared to determine whether the glasses have strabismus.

Preferably, the visual training strategy at least comprises changing optical parameters of the lens, changing a straight-line distance between the lens and the display module and displaying the visual contents in a given mode through the display module. For example, the visual content is composed of a plurality of different types of second image information, a visual training strategy can be formed according to a mode of periodically displaying the visual content, and the state of the eyes can be effectively improved by adjusting the eyes to watch the visual images which are, for example, moving pictures, different brightness and periodic changes of different background colors.

Example 2

This embodiment is a further improvement of embodiment 1, and repeated contents are not described again.

Preferably, the display module can be configured to have several different operating modes of operation. One or more display modules 3 display the display content thereof to the user in a manner of respectively corresponding to the left eye and the right eye, and under the condition that the vision trainer simultaneously displays the content for the left eye and the right eye through one display module, different parts of the display module form display areas for the left eye and the right eye. For example, a dividing member is provided between the display module and the lens to divide the lens and the display module into two portions that do not interfere with each other, that is, the left eye cannot see the display contents in the display module on the right side through the lens on the left side. The visual content displayed to the user can be a panoramic image of the user at the current visual angle acquired in real time through an image acquisition device, or a visual image for relieving eye fatigue in a storage module of a built-in visual training device. The visual image can be, for example, a game, video, 3D video, still image, virtual reality image, or a composite image of a dynamic image, still image, and a rendered background, wherein the rendered background is a plurality of RGB colors, such as red, blue, green, or brown. Preferably, the visual images for alleviating eye strain exhibit a dynamic state of change over time, and the visual images provided to the left and right eyes may be completely different or only have one or more image characteristics different.

Preferably, the display module can adaptively modify the display content presented by the display module for different eye states to present, so that the display module can perform rehabilitation training on amblyopia, strabismus or binocular vision state with large difference. In particular, the display module is capable of modifying the presented content at least in a manner to force the user to correctly identify the visual image using both eyes.

S1: and locally blurring the images in the display modules corresponding to the left eye and the right eye. The blurring of the images corresponding to the left and right eyes may not be performed simultaneously or in different degrees of blurring. For example, in the case that the nearsightedness of the left eye is higher than that of the right eye, in order to reduce the degree of dependence of the user on the right eye with lower nearsightedness in the recognition process, the degree of blur of the image corresponding to the left eye may be set to be lower than that of the image corresponding to the right eye, and then the focal power of the lens corresponding to the left eye and the distance between the lens and the display module may be matched. Carry out specific training to the left eye through the mode of the higher use degree of the left eye of increase myopia degree, can reduce the degree of dependence of user to the low right eye of myopia degree in daily observation gradually, and then can control the aggravation of vision difference between left eye and the right eye effectively.

S2: the image features in the display module can be moved relative to a fixed background. For example, the image features in the display module corresponding to the right eye, which is the eye judged to have strabismus by the eye state evaluation module, may be adjusted according to the position in the display module corresponding to the left eye, which is the eye judged to have strabismus by the eye state evaluation module, and the left eye, which is the eye judged to have no strabismus by the eye state evaluation module. The positions of the image features in the abnormal eyes are corrected according to the positions of the image features in the normal eyes, so that the abnormal eyes can be rehabilitated and exercised, and the strabismus state of the user can be gradually rehabilitated or relieved in the process of continuously strengthening the use.

S3: changing the brightness, color, contrast, or transparency of the image feature. For example, the transparency of the display content in the display module can change over time. A visual layering effect may be created with the current image frame and images subsequent to the current image frame by changing the transparency of the image content for different frames. Specifically, the transparency of the display content in the display module corresponding to the normal left eye may be set to 20% and the background color of the display content may be black, where each pixel for the display module has 20% of the image pixels and 80% of the black pixels, so that the display content corresponding to the left eye can be significantly darkened. Meanwhile, the transparency of the display content displayed to the right eye with amblyopia is set to be zero and the background color of the display content is black, at the moment, the display content keeps a completely opaque state, and the black background of the display content is invisible, so that no dimming effect is caused on the display content. By the mode, darker image content is displayed to stronger eyes, brighter image content is displayed to weaker eyes, and the weaker eyes can be effectively protected.

Preferably, the display contents in the display modules corresponding to the left eye and the right eye can be cyclically alternated at different cyclically alternation speeds. For example, the display content for the left eye is alternated five times per second, and the display content for the right eye is alternated ten times per second.

Preferably, the central processing module is configured in such a way that the power of the lens, the distance between the lens and the display module can be varied independently in time. By means of independent control, the display screen can be made to control the visual content at the focal center based on the current left and right eye states. For example, the diopter scale of the power of the lens may be switched from-2 to +2 every five seconds. At diopter scale +2, the user's eyes may be stimulated to relax accommodation, i.e., the user needs to relax his eye muscles to the maximum extent so that the surface curvature of the lens decreases to become flatter.

Example 3

This embodiment is a further improvement of the foregoing

embodiments

1 and 2, and repeated details are not repeated.

The invention also discloses a wearing device provided with the visual training device, which can be conveniently used in a wearing mode. As shown in fig. 3, the wearing device includes a first outer frame 8 and a second outer frame 9. The shape of the first outer frame 8 is defined by a hollow rectangular parallelepiped shape having one face opened, wherein the visual training aid can be fixed in such a manner as to be integrally inserted into the hollow cavity of the first outer frame. The shape of the second outer frame 9 is defined by a hollow cuboid with one open end face, wherein the cross-sectional curve of the open end face of the second outer frame is consistent with the skin curve at the eye position, or a sealing ring is fixed on the open end face of the second outer frame in an adhesive manner, so that the second outer frame can be tightly attached to the skin of the eye when a user wears the glasses, and the user is prevented from being influenced by external illumination due to light leakage. The other end face of the second outer frame parallel to the open end face thereof is provided with two through holes 10, and a desired lens is selected by rotating the lens so as to fall within the visual field range of the through holes. Preferably, when the vision training device is integrally inserted into the hollow cavity of the first outer frame, the second outer frame is fixed to the open end surface of the first outer frame in a clamping or bolt connection manner.

Preferably, as shown in fig. 5, a support structure similar to a temple may be provided in the long side direction of the second outer frame, and wearing of the wearing apparatus may be achieved through the support structure. The first outer frame and the second outer frame can also be used for fixing the wearing device on the head through the belt 18 according to the mode of arranging the belt 18.

Preferably, the modules of the vision trainer may be fixed to the first outer frame and the second outer frame, respectively, in an individually fixed manner. Specifically, the environment monitoring module at least includes a first image collector 11, where the first image collector collects all image information that the eyes can acquire at the current viewing angle according to a manner that a shooting direction of the first image collector faces away from the eyes, that is, a range of the image information collected by the first image collector is consistent with a viewing range seen by the naked eyes of the user. The first image collector 11 is fixed to the upper end surface of the first outer frame perpendicular to the open end surface thereof. The display module may be a liquid crystal flexible display screen. The display modules can be two to correspond to the left eye and the right eye respectively, wherein the display modules are fixed on the end face of the first outer frame parallel to the open end face of the first outer frame through sliding pairs. The horizontal distance between the two display modules can be increased or decreased through the movement of the sliding pair, for example, the distance between the display modules is dynamically adjusted according to the measured pupil distance of the two eyes, so that the geometric center of the display modules, the geometric center of the lenses and the pupils are always kept on the same straight line. Preferably, the display module can be embedded in the first outer frame in a rolling manner without electric operation, and at this time, the display module does not obstruct the observation of the outside world by both eyes. Under the condition that the display module works in a power-on mode, the display module stretches so that two eyes can directly observe display contents in the display module.

Preferably, a plurality of lenses 4 with different focal powers are arranged on the inner surface of a fixed ring 7, a groove matched with the radian of the fixed ring is formed in the inner surface of the first outer frame, and the fixed ring is slidably connected with the shell in a groove clamping mode, so that the fixed ring can rotate around the axis of the fixed ring. The plurality of lenses are fixed on the inner surface of the fixed circular ring in a mode of surrounding the axis of the fixed circular ring by 360 degrees, wherein the working surfaces of the lenses are perpendicular to the axis direction of the fixed circular ring, the geometric center of at least one lens can be positioned on the same horizontal plane with the geometric center line of the display module, and then the eyes, the lenses and the display module can be positioned on the same horizontal straight line, and the eyes can completely observe contents displayed on the display module through the lenses. Preferably, the fixed ring 7 consists of an inner ring 7a and an outer ring 7b, which are connected by balls and in a nested manner with each other. A plurality of lenses are fixed on an inner ring, and the inner ring can rotate around the axis of the inner ring. At least one sliding rail 12 with the axial extension direction perpendicular to the surface of the lens is arranged in the upper direction, the lower direction, the left direction and the right direction on the inner surface of the first outer frame, a plurality of through holes matched with the sliding rail 12 are arranged on the outer ring 7b, and the sliding rail is connected with the sliding rail in a sliding mode according to the mode of penetrating through the through holes of the outer ring. The inner ring and the outer ring are driven to rotate and move linearly by a driving device respectively. The driving device can be arranged in a proper position in the hollow cavity of the first outer frame according to actual conditions, so that the required lens can be selected in a mode of rotating the inner ring, and the distance between the lens and the display module can be changed in a mode of linearly moving the outer ring.

Preferably, the eye state evaluation module 5 is used in cooperation with the second image collector 13. For example, the second image collector is detachably fixed on the second outer frame in a threaded connection or clamping connection mode, and the image collection direction of the second image collector faces the direction of eyes so that the second image collector can completely collect image information of both eyes. The second image collector may collect the image information of both eyes at a certain time interval, or may collect the image information of both eyes at a certain time interval. The image information collected by the second image collector is transmitted to the eye use state evaluation module for evaluation so as to determine the current binocular state of the user, for example, whether the eyes are in fatigue or overuse state can be judged through the congestion state of the eyes or the blinking frequency. And under the condition of judging that the eyes are in fatigue or overuse state, generating a countermeasure through the central processing module and controlling the display module and the lens to perform corresponding operation so as to relieve the current eye use state. Preferably, the eye state evaluation module may be a data processing server or a data processing chip, which may be built in at a suitable position in the hollow cavity of the first outer frame as the case may be.

Preferably, the central processing module may be a data processing server or a data processing chip, and is configured to generate a strategy for improving the current eye usage state based on the data information transmitted by the environment monitoring module and the eye usage state evaluation module, and control the operation mode of the lens and the display module according to the strategy. The central processing module may be built in place in the hollow cavity of the first outer frame as the case may be.

Preferably, the wearable device further comprises a communication module 14 built in the first outer frame, and communication connection between the wearable device and other external equipment can be realized through the communication module. For example, a mobile phone can be in communication connection with the wearing device through the communication module, so that the wearing device can be personalized through the mobile phone, for example, the category of the display content of the display module, the alternate replacement frequency of the display content or the optical parameters of the lens are configured.

Preferably, the wearable device further comprises a storage module 15, and the storage module is configured to store configuration data of a user, display content and display scheme of a preset display module, or other externally imported data information. For example, the user may upload personalized display content via a communication link with the wearable device, such as a cell phone, tablet, or smart watch.

Preferably, the wearable device further comprises a power supply module 16, through which power can be supplied to other electronic modules to ensure their normal operation. The wearing device further comprises a driving module 17 for driving the inner and outer rings into movement.

For ease of understanding, the interaction between the modules of the wearable device will be discussed in detail.

Fig. 4 shows a schematic diagram of the connection relationship between the modules of the wearable device. As shown in fig. 4, the environment monitoring module 1, the eye state evaluation module 5, the display module 3, the storage module 15, the power supply module 16, and the driving module 17 are all communicatively coupled to the central processing module 2. The first image collector and the second image collector are respectively and communicatively coupled to the environment monitoring module and the eye use state evaluation module.

The second image collector collects the image information of the eyes of the user and transmits the image information to the eye state evaluation module for processing, and the eye state evaluation module judges the use states of the eyes of the user according to the received image information. And when the eyes of the user are judged to be in the condition of needing to be adjusted, the central processing unit controls the first image collector, the driving module and/or the display module to work. In a preferred embodiment, the central processing unit controls the first image collector to collect image data about an environment at a current viewing angle and transmit the image data to the environment monitoring module for first-stage processing, where the first-stage processing may be light supplementing, denoising, or image quality enhancing processing on the collected image based on an image processing technology to improve the identifiability of the collected image, and then the processed image is displayed through the display module. In another preferred embodiment, the central processing module makes an eye training strategy of the eye using state according to the eye using state information, accesses and calls the image content in the storage module and displays the image content in the display module, and meanwhile, the central processing unit controls the driving module to work according to the eye training strategy so as to change the focal power of the lens and the distance between the lens and the display module.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A vision trainer comprising at least a display module (3) communicatively coupled to a central processing module (2), characterized in that the central processing module (2) is configured to: determining a current visual state evaluation value of the user based on the acquired first image information; when the visual state evaluation value is lower than a threshold value (D)₁) In case of a visual training strategy, the central processing module (2) generates control signals for executing the visual training strategy, wherein,

the display module (3) is configured to be responsive to the control signal at least in the following manner:

reproducing the second image information in such a manner that at least the degree of blur, position and/or transparency of the image features can be changed to different degrees so that the second image information displayed to the left and right eyes are different from each other;

in the case where the visual state evaluation values of the left and right eyes are different from each other, displaying the second image information corresponding to the eye whose visual state evaluation value is large in a manner that increases the difficulty of identification thereof so that the user performs identification correction on the second image information by relying on the eye whose visual state evaluation value is small to a greater extent;

the display module (3) is arranged in an operating mode in which its display content can be viewed through at least one lens (4) whose linear distance can be increased or decreased, the lens (4) being responsive to the control signal in such a way as to change its optical parameter and its linear distance from the display module (3), wherein,

the optical parameters comprise at least the optical power, the optical parameters and the linear distance being varied in a matched manner such that the linear distance is equal to the focal length of the lens (4);

the vision trainer further comprises an environmental monitoring module (1) communicatively coupled to the central processing module, wherein,

the environment monitoring module (1) collects real-time image information according to the mode that the visual field range of the environment monitoring module is the same as the visual field range of the eyes of a user under the naked vision condition;

the visual training device is divided into three use states, namely a first use state, a second use state and a third use state, wherein the first use state is a common use state of the visual training device, the second use state is a massage state, and the third use state is a real-time monitoring and adjusting state.

2. The vision trainer as set forth in claim 1, wherein the method of increasing the difficulty of identifying the second image information comprises at least the steps of:

increasing the degree of blur and/or the degree of transparency of at least one image feature in the second image information;

reducing the size of the at least one image feature relative to other image features and matching the optical parameters in a manner that increases the linear distance.

3. The vision trainer as set forth in claim 2, wherein the first image information is image information and/or video information of both eyes photographed in a certain period of time, the visual state evaluation value can be used at least for evaluating a fatigue degree or a visual normality state of the eyes, wherein,

the visual state evaluation value is used for evaluating the degree of eye fatigue and is less than the threshold value (D)₁) In the case of (3), the second image information is real-time image information of the surrounding environment which can be seen by both eyes of the user based on the current visual axis under the naked vision condition, and the real-time image information is respectively displayed to the left eye and the right eye through the display module (3) at least in a mode of enhancing the image quality.

4. A vision trainer as claimed in claim 3 wherein the visual state assessment value is used to assess the visual normality and is below the threshold value (D)₁) In case of (2), the second image information is a plurality of visual images displayed in a form of a game, a video, a still image, a 3D image, a dynamic image and/or a rendered background, which are different from each other in the degree of blur, position, transparency and/or size of image features preset in the vision trainer, wherein,

the visual training strategy is generated in such a way that the visual images are periodically displayed.

5. Visual trainer according to claim 4, wherein the visual state assessment is used to assess the degree of eye fatigue and is less than the threshold value (D)₁) The visual image is displayed to an eye whose visual state evaluation value is small, the real-time image information is displayed to an eye whose visual state evaluation value is large, wherein,

said visual image and said real-time image information being in time periods (T) of intervals₁) And then alternately displayed to both eyes in an alternating fashion with each other.

6. The vision trainer as set forth in claim 5 further comprising an eye use state assessment module (5) communicatively coupled to the central processing module, wherein,

the eye state evaluation module (5) can at least extract the blinking frequency, the pupil size, the degree of congestion of eyes and/or the eyeball movement state of the user in the first image information collected by the eye state evaluation module to evaluate the fatigue degree of eyes;

the eye state evaluation module (5) at least can extract the eyeball position, the eyeball turbidity and/or the curvature radius of the crystalline lens of the user in the acquired first image information to evaluate the vision normal state of the eyes.

7. Wearing device, characterized in that it is equipped with a vision trainer according to one of the preceding claims, which wearing device comprises at least a first outer frame (8) and a second outer frame (9), wherein,

the shape of the first outer frame is defined by a cuboid hollow with one open end face, the vision trainer can be built in a hollow cavity of the first outer frame (8) in a modular integrated manner, wherein,

the display module (3) is arranged on the other end face of the first outer frame parallel to the open end face of the first outer frame, the lens (4) is arranged in a hollow cavity of the first outer frame through a sliding pair in a mode that the focusing direction of the lens is perpendicular to the open end face, and the second outer frame (9) is connected with the first outer frame (8) in a mode that the open end face is closed.

8. The wearing device of claim 7, further comprising several straps (18) for securing the wearing device to the eye and a securing ring (7) for securing the lens (4), wherein,

the lenses (4) are fixed inside the fixed ring (7) in a circumferential surrounding mode, so that the lenses can rotate around the axis of the fixed ring;

the second outer frame (9) is provided with at least two through holes (10) matched with two eyes, so that after the fixed ring (7) is rotated to select a designated lens, the two eyes can observe display contents in the display module (3) through the through holes (10) and the lens (4) in sequence.