An axial chromatic aberration image display method and system

Abstract

This disclosure belongs to the field of image display and relates to a method and system for displaying axial chromatic aberration images. The method includes: acquiring movement information of a viewer's head and / or eyeballs; determining a first imaging region and a second imaging region on a screen based on the movement information; displaying a first image in the first imaging region and a second image in the second imaging region, wherein the center wavelength of the first image is at least 100 nm longer than the center wavelength of the second image. The system includes: a capture device for acquiring movement information of the viewer's head and / or eyeballs; a region determination module for determining the first and second imaging regions on a screen based on the movement information; and an image control module for displaying the first image in the first imaging region and the second image in the second imaging region, wherein the center wavelength of the first image is at least 100 nm longer than the center wavelength of the second image. By tracking the position of the gaze in real time to present an axial chromatic aberration image within the field of vision, myopic defocus is generated to suppress axial elongation.

Description

Technical Field

[0001] This disclosure belongs to the field of image display, and specifically relates to a method and system for displaying axial chromatic aberration images. Background Technology

[0002] Myopia is a societal problem. Research indicates that myopia defocus can effectively inhibit axial elongation and may even shorten the axial length. Myopia defocus (also known as positive defocus) stimulation refers to the phenomenon where, when the human eye focuses on an image plane that is clearly focused on the retina (the principal image plane), if another image plane or part of the principal image plane can be simultaneously focused in front of the retina through optical means, positive defocus stimulation is formed in optometry. Defocus stimulation in the peripheral visual field is equally effective. Current research suggests that switching to peripheral defocus stimulation can enhance the effect of myopia defocus stimulation, showing superior performance in myopia control.

[0003] Axial chromatic aberration can cause myopic defocus. When light of different wavelengths enters the eye, it focuses at different locations within the eye. Longer wavelengths of light often fall behind the retina, while shorter wavelengths often fall in front of the retina. If certain optical techniques, such as increasing light intensity, are used to make the focus of the longer wavelengths of light fall on the retina, the focus of the shorter wavelengths of light will shift away from the retina. In this case, the focus of the longer wavelengths of light becomes the principal image plane, while the focus of the shorter wavelengths of light forms in front of the retina, thus pulling the retina forward and inhibiting axial elongation.

[0004] When performing myopia defocus stimulation, the effect of inhibiting axial elongation is not effective when the user's gaze leaves the myopia defocus stimulation area. Therefore, it is necessary to determine the location of the gaze in order to perform myopia defocus stimulation in a targeted manner in the area where the gaze is located. Summary of the Invention

[0005] This disclosure is made based on the aforementioned needs of the prior art. The technical problem to be solved by this disclosure is to provide an axial chromatic aberration image display method and system that suppresses axial elongation by generating myopic defocus by tracking the position of the gaze in real time to present an axial chromatic aberration image within the field of vision.

[0006] To address the aforementioned problems, the technical solutions provided in this disclosure include:

[0007] An axial chromatic aberration image display method is provided, comprising: acquiring movement information of a viewer's head and / or eyeballs; determining a first imaging region and a second imaging region on a screen based on the movement information, wherein the first imaging region corresponds to the viewer's central field of view and the second imaging region corresponds to the viewer's peripheral field of view; displaying a first image in the first imaging region and displaying a second image in the second imaging region, wherein the center wavelength of the first image is more than 100 nm longer than the center wavelength of the second image.

[0008] Based on the human body's reactions during daily viewing, the system determines the viewer's current gaze position on the screen based on head and / or eye movement information. A first image and a second image are displayed in the central field of view centered on this position and the surrounding field of view. The first and second images work together to create axial chromatic aberration, causing the focal point of the first image to fall on the retina, while the focal point of the second image falls in front of the retina. This creates a myopic defocus stimulus, thereby inhibiting axial elongation. Furthermore, by acquiring movement information in real time, the system can track the viewer's actual position on the screen, thus providing targeted eye stimulation that does not stop with gaze movement.

[0009] Preferably, the central field of view includes a viewer's field of view angle of 0-A°; the surrounding field of view includes a viewer's field of view angle of A°-19°, wherein A≤9°.

[0010] This configuration ensures that the first image presented in the first imaging area falls within the user's central field of view, while the second image presented in the second imaging area falls within the user's peripheral field of view. The first image can provide specific stimulation to the central field of view, and the second image can provide specific stimulation to the peripheral field of view. The axial chromatic aberration formed by the combined action of the two can jointly generate myopic defocus stimulation, thereby effectively inhibiting axial elongation.

[0011] Preferably, determining the first imaging region and the second imaging region on the screen based on the movement information includes: obtaining a first relationship between viewer head movement information and the movement position of viewer's line of sight on the screen surface; obtaining a second relationship between viewer eye movement information and the movement position of viewer's line of sight on the screen surface; and determining the first imaging region and the second imaging region based on the first relationship and the second relationship.

[0012] By setting up the above, the relationship between the screen and head movement information and the screen and eye movement information is established. Then, the obtained first relationship and second relationship can be used as a reference to obtain the position of the gaze based on the obtained head movement information and eye movement information, and then the first imaging area and the second imaging area are formed based on the position.

[0013] Preferably, determining the first imaging area and the second imaging area on the screen based on the movement information includes: determining the position of the viewer's center of vision on the surface of the screen; the first image overlaying the original image, with the center of the first image overlapping the viewer's center of vision; and the second image overlaying the original image, with the second image concentrically positioned with the first image.

[0014] This setup enables the formation of myopic defocus stimuli on any image and the creation of axial chromatic aberration images within a specific area on the screen, thus having a wide range of applications.

[0015] Preferably, the first relationship between obtaining the viewer's head movement information and the viewer's line of sight moving on the screen surface includes: obtaining multiple movement information of the viewer's head corresponding to multiple first preset points on the screen surface, the multiple preset points including the four vertices of the screen and the center point of the screen; and obtaining the first relationship based on the correspondence between the multiple first preset points and the multiple movement information of the head.

[0016] This setup establishes a coordinate system for head movement information and a coordinate system for the screen plane. A one-to-one correspondence between the two systems allows for the determination of the viewer's gaze position based on the acquired head movement information. Multiple points are selected to maximize the accuracy of this primary relationship.

[0017] Preferably, the second relationship between obtaining the viewer's eye movement information and the position of the viewer's gaze on the screen surface includes: obtaining multiple movement information of the viewer's eyeballs corresponding to multiple second preset points on the screen surface, wherein the second preset points include points symmetrically distributed in the horizontal direction with the dividing line in the vertical direction where the center point of the screen is located as the axis of symmetry; and obtaining the second relationship based on the correspondence between the multiple second preset points and the multiple movement information of the eyeballs.

[0018] This setup establishes a coordinate system for eye movement information and a coordinate system for the screen surface. A one-to-one correspondence between the two systems allows for the determination of the viewer's gaze position based on the acquired eye movement information. Multiple points are selected to maximize the accuracy of this second relationship.

[0019] Preferably, determining the position of the viewer's center of vision on the screen surface includes: obtaining a first position based on the acquired head movement information and the first relationship; obtaining a second position based on the acquired eye movement information and the second relationship; and determining the position of the viewer's center of vision on the screen surface by superimposing the second position on the first position.

[0020] Simultaneously considering the first and second relationships allows for a more accurate determination of the position of the gaze on the screen, which serves as the basis for myopia defocus stimulation.

[0021] Preferably, the first preset point includes image points randomly presented on the surface of the screen; the second preset point includes image points randomly presented on the surface of the screen.

[0022] This setup allows for the acquisition of first and second relationships without being limited by screen shape, and enables the viewer's real-time gaze position to be obtained through head and / or eye movement information.

[0023] Preferably, the screen further includes a third imaging area that displays a third image and is disposed around the second imaging area.

[0024] The above settings are intended to provide some degree of assistance in creating myopia defocus.

[0025] Preferably, the head movement information includes the distance between the head and the screen and the angle of head rotation; the eye movement information includes the distance between the eyeball and the screen, the distance the eyeball moves, and the direction of movement.

[0026] Preferably, the frequency of acquiring the viewer's head and / or eye movement information is 1-10Hz.

[0027] This setup aims to achieve real-time data acquisition as much as possible while keeping computational costs low.

[0028] Preferably, the central field of view includes a first field of view, which includes 0-5°, and a second field of view, which includes 5°-9°; the first field of view corresponds to a first sub-region of the first imaging region, and the second field of view corresponds to a second sub-region of the first imaging region; a first sub-image with a wavelength of 625-740nm is presented in the first sub-region, and the first sub-image has a first luminance and a first transparency; a second sub-image with a wavelength of 625-740nm is presented in the second sub-region, and the second sub-image has a first luminance and a second transparency; the second image has a wavelength of 400nm-480nm, and the second image has a second luminance and a second transparency; the third image has a wavelength of 400nm-480nm, and the third image has a third luminance and a third transparency; the third transparency is greater than the second transparency, and the second transparency is greater than the first transparency; the third luminance is greater than the first luminance, and the third luminance is less than the second luminance.

[0029] The above settings can create axial chromatic aberration within the area centered on the center of vision, thereby generating better myopic defocus stimulation and inhibiting axial elongation.

[0030] An axial chromatic aberration image display system is also provided, comprising: a capture device for acquiring movement information of a viewer's head and / or eyeballs; a screen for displaying an axial chromatic aberration image; and a controller comprising: a region determination module for determining a first imaging region and a second imaging region on the screen based on the movement information, wherein the first imaging region corresponds to the viewer's central field of view, and the second imaging region corresponds to the viewer's peripheral field of view; and an image control module for displaying a first image in the first imaging region and a second image in the second imaging region, wherein the center wavelength of the first image is more than 100 nm longer than the center wavelength of the second image.

[0031] The aforementioned system is based on the human body's reactions during daily viewing. It determines the viewer's current position on the screen based on head and / or eye movement information. A first image and a second image are displayed in the central field of view centered on this position and in the surrounding field of view. The first and second images work together to create axial chromatic aberration, causing the focal point of the first image to fall on the retina, while the focal point of the second image falls in front of the retina. This creates a myopic defocus stimulus, thereby inhibiting axial elongation. Furthermore, by acquiring movement information in real time, the system can track the viewer's position on the screen, thus providing targeted eye stimulation that does not stop with changes in gaze.

[0032] Preferably, the axial chromatic aberration imaging system includes AR and VR.

[0033] This system is suitable for a variety of display devices.

[0034] Preferably, the central field of view includes a viewer's field of view angle of 0-A°; the surrounding field of view includes a viewer's field of view angle of A°-19°, wherein A≤9°.

[0035] This configuration ensures that the first image presented in the first imaging area falls within the user's central field of view, while the second image presented in the second imaging area falls within the user's peripheral field of view. The first image can provide specific stimulation to the central field of view, and the second image can provide specific stimulation to the peripheral field of view. The axial chromatic aberration formed by the combined action of the two can jointly generate myopic defocus stimulation, thereby effectively inhibiting axial elongation.

[0036] Preferably, the region determination module includes: a first determination module for acquiring a first relationship between viewer head movement information and viewer's line of sight movement on the screen surface; and a second determination module for acquiring a second relationship between viewer eye movement information and viewer's line of sight movement on the screen surface; and determining a first imaging region and a second imaging region based on the first and second relationships.

[0037] By setting up the above, the relationship between the screen and head movement information and the screen and eye movement information is established. Then, the obtained first relationship and second relationship can be used as a reference to obtain the position of the gaze based on the obtained head movement information and eye movement information, and then the first imaging area and the second imaging area are formed based on the position.

[0038] Preferably, the region determination module determines the position of the viewer's center of vision on the surface of the screen; the image control module controls the first image to overlap the original image, with the center of the first image overlapping the viewer's center of vision; and controls the second image to overlap the original image, with the second image being concentrically set with the first image.

[0039] This setup enables the formation of myopic defocus stimuli on any image and the creation of axial chromatic aberration images within a specific area on the screen, thus having a wide range of applications.

[0040] Preferably, the first determining module includes: acquiring multiple movement information of the viewer's head corresponding to multiple first preset points on the screen surface, wherein the multiple preset points include the four vertices of the screen and the center point of the screen; and obtaining the first relationship based on the correspondence between the multiple first preset points and the multiple movement information of the head.

[0041] This setup establishes a coordinate system for head movement information and a coordinate system for the screen plane. A one-to-one correspondence between the two systems allows for the determination of the viewer's gaze position based on the acquired head movement information. Multiple points are selected to maximize the accuracy of this primary relationship.

[0042] Preferably, the second determining module includes: acquiring multiple movement information of the viewer's eyeballs corresponding to multiple second preset points on the screen surface, wherein the second preset points include points symmetrically distributed in the horizontal direction with the dividing line in the vertical direction where the center point of the screen is located as the axis of symmetry; and obtaining the second relationship based on the correspondence between the multiple second preset points and the multiple movement information of the eyeballs.

[0043] This setup establishes a coordinate system for eye movement information and a coordinate system for the screen surface. A one-to-one correspondence between the two systems allows for the determination of the viewer's gaze position based on the acquired eye movement information. Multiple points are selected to maximize the accuracy of this second relationship.

[0044] Preferably, the region determination module includes: obtaining a first position based on the acquired head movement information and the first relationship; obtaining a second position based on the acquired eye movement information and the second relationship; and determining the position of the viewer's gaze center point on the surface of the screen by superimposing the second position on the first position.

[0045] Simultaneously considering the first and second relationships allows for a more accurate determination of the position of the gaze on the screen, which serves as the basis for myopia defocus stimulation.

[0046] Preferably, the first preset point includes image points randomly presented on the surface of the screen; the second preset point includes image points randomly presented on the surface of the screen.

[0047] This setup allows for the acquisition of first and second relationships without being limited by screen shape, and enables the viewer's real-time gaze position to be obtained through head and / or eye movement information.

[0048] Preferably, the image control module further includes presenting a third image in a third imaging region, the third imaging region being disposed around the second imaging region.

[0049] The above settings are intended to provide some degree of assistance in creating myopia defocus.

[0050] Preferably, the head movement information includes the distance between the head and the screen and the angle of head rotation; the eye movement information includes the distance between the eyeball and the screen, the distance the eyeball moves, and the direction of movement.

[0051] Preferably, the frequency of acquiring the viewer's head and / or eye movement information is 1-10Hz.

[0052] This setup aims to achieve real-time data acquisition as much as possible while keeping computational costs low.

[0053] Preferably, the central field of view includes a first field of view, which includes 0-5°, and a second field of view, which includes 5°-9°; the first field of view corresponds to a first sub-region of the first imaging region, and the second field of view corresponds to a second sub-region of the first imaging region; a first sub-image with a wavelength of 625-740nm is presented in the first sub-region, and the first sub-image has a first luminance and a first transparency; a second sub-image with a wavelength of 625-740nm is presented in the second sub-region, and the second sub-image has a first luminance and a second transparency; the second image has a wavelength of 400nm-480nm, and the second image has a second luminance and a second transparency; the third image has a wavelength of 400nm-480nm, and the third image has a third luminance and a third transparency; the third transparency is greater than the second transparency, and the second transparency is greater than the first transparency; the third luminance is greater than the first luminance, and the third luminance is less than the second luminance.

[0054] The above settings can create axial chromatic aberration within the area centered on the center of vision, thereby generating better myopic defocus stimulation and inhibiting axial elongation.

[0055] Compared to existing technologies, this disclosure establishes a first relationship between head movement information and the screen, and a second relationship between eye movement information and the screen. Based on real-time acquired head and / or eye movement information, it determines the position of the viewer's gaze center on the screen. An axial chromatic aberration image is formed within a first imaging region and a second imaging region centered on this position. This provides myopia defocus stimulation to the viewer's eyes, thereby inhibiting axial elongation. Because this disclosure enables real-time gaze tracking, it provides myopia defocus stimulation to the eyes based on the eye's position, thus inhibiting axial elongation and effectively preventing myopia to a certain extent. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0057] Figure 1 This is a flowchart illustrating the steps of an axial chromatic aberration image display method according to an embodiment of the present disclosure;

[0058] Figure 2 This is a schematic diagram illustrating the formation of the first relationship in an embodiment of this disclosure;

[0059] Figure 3This is a schematic diagram illustrating the relationship between head rotation and the center of vision on the screen in an embodiment of this disclosure;

[0060] Figure 4 This is a schematic diagram illustrating the formation of the second relationship in an embodiment of this disclosure;

[0061] Figure 5 This is a schematic diagram illustrating the relationship between eye movement and the center of vision on the screen in an embodiment of this disclosure;

[0062] Figure 6 This diagram illustrates the relationship between head and eye rotation and the center of the line of sight on the screen in an embodiment of this disclosure (where the dashed line represents the first position and the line of sight represents the image position after superimposing the second position).

[0063] Figure 7 This is a front view of the first position superimposed on the second position in an embodiment of this disclosure;

[0064] Figure 8 This is a schematic diagram of the imaging of the first imaging region and the second imaging region in an embodiment of this disclosure.

[0065] Figure 9 This is a partial connection diagram of an axial chromatic aberration image display system according to an embodiment of the present disclosure;

[0066] Figure 10 This is a schematic diagram illustrating the principle of myopia defocus stimulation in existing technologies.

[0067] Figure label:

[0068] 1. Screen; 2. First imaging area; 201. First sub-area; 202. Second sub-area; 3. Second imaging area; 4. Third imaging area; 5. Capture device; 6. Controller; 7. Area determination module; 701. First determination module; 702. Second determination module; 8. Image control module; 9. First preset point; 10. Second preset point; 11. Retina. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0070] In the description of the embodiments of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the term "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0071] Throughout the text, the terms “top,” “bottom,” “above,” “below,” and “on top” refer to the relative positions of components of the device, such as the relative positions of the top and bottom substrates within the device. It is understood that the device is multifunctional and independent of its spatial orientation.

[0072] Axial myopia defocusing has been shown to have a certain effect on inhibiting myopia. Its working principle is as follows: Figure 10 As shown, when the human eye focuses on an image plane, that image plane can be clearly imaged on the retina 11, and is called the principal image plane (refer to B in the attached figure). If, by means of optical means, another image plane is presented in front of the retina 11 when the principal image plane falls on the retina 11 (refer to A in the attached figure), the two image planes work together to form axial myopic defocus, causing the eye to have a tendency to want to see the image presented in front of the retina 11 clearly, thus moving the retina 11 forward to inhibit the elongation of the eye axis, and may even reduce the degree of myopia.

[0073] Because different colors of light have different wavelengths and different refractive indices in the same medium, they focus at different focal points. Furthermore, when different colors of light enter the eye, due to their different wavelengths, some colors will focus in front of the retina, while others will focus behind it. If the focal point furthest from the retina can be controlled and directed onto the retina using optical means, the shorter wavelength light will focus in front of the retina, creating myopic defocus. This can, to some extent, inhibit the elongation of the eye axis and effectively alleviate or even treat myopia.

[0074] To facilitate understanding of the embodiments of this application, the following will provide further explanation and description with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application.

[0075] Example 1

[0076] This embodiment provides a method for displaying axial chromatic aberration images, such as... Figures 1-8 As shown.

[0077] like Figure 1 As shown, the axial chromatic aberration image display method includes:

[0078] Acquire information about the movement of the viewer's head and / or eyes.

[0079] The head movement information includes the distance between the viewer's head and the screen 1 being viewed, as well as the angle of rotation of the viewer's head. The eye movement information includes the distance between the viewer's eyes and the screen 1, the distance the eyes move within the user's eye socket, and the angle of rotation of the eyes.

[0080] Under normal daily eye use, the human eye does not maintain a squinting gaze for extended periods. When the object being viewed changes, the head angle and position are first adjusted according to the object's location, followed by subtle adjustments through the eyes to ensure the object falls on the fovea of ​​the retina. Therefore, head angle and position adjustments play a major role in adjusting the human line of sight.

[0081] In the scenario of viewing electronic display devices, the displayed content includes both non-textual and textual content. Specifically, when viewing non-textual content on screen 1, if the target object moves, the head will move accordingly. To ensure the distance between the viewer and the target object remains constant, the approximate location of the target object can be determined by the direction of head movement. When viewing textual content, based on everyday reading scenarios, the head does not move significantly when reading line by line; instead, the viewer scans the target text directly with eye movements. A slight head movement occurs when changing lines. Therefore, eye movements are typically horizontal. In this case, the viewer's target location needs to be determined based on the distance between the eye and the viewing surface, the distance the eye moves, and the direction of the eye movement. In this embodiment, screen 1 also includes virtual screens 1 formed within AR and VR glasses.

[0082] When both of the above conditions are combined, the position of the target being viewed by the viewer can be determined relatively accurately. As the head moves with the target so that it falls within the fovea of ​​the viewer's retina, fine adjustments can be made through eye movements. This setup allows for the accurate determination of the specific position on screen 1 corresponding to the center of the user's eye.

[0083] Furthermore, the frequency of acquiring the viewer's head and / or eye movement information is 1-10Hz. When a viewer reads text on screen 1, the reading speed typically corresponds to a frequency of 1-10Hz. This enables real-time acquisition of the viewer's movements, providing a better user experience and better aligning with the context of eye reading.

[0084] Based on the movement information, a first imaging region 2 and a second imaging region 3 are determined on screen 1. The first imaging region 2 corresponds to the viewer's central field of view, and the second imaging region 3 corresponds to the viewer's peripheral field of view. The central field of view corresponds to the fovea and fovea regions of the human eye's retina, and includes the viewer's field of view angle of 0-A°. The peripheral field of view corresponds to the fovea periphery of the fovea region of the human eye's retina, and includes the viewer's field of view angle of A°-19°, where A ≤ 9°. This arrangement ensures that the image formed in the first imaging region 2 falls on the viewer's fovea and fovea regions, while the image formed in the second imaging region 3 falls on the viewer's peripheral field of view.

[0085] Determining the first imaging region 2 and the second imaging region 3 on the screen 1 based on the movement information includes obtaining a first relationship between the viewer's head movement information and the position of the viewer's line of sight on the surface of the screen 1.

[0086] The distance between the viewer's head and screen 1 is obtained and kept constant. Multiple movement information of the viewer's head corresponding to multiple first preset points 9 on the surface of screen 1 is obtained; the first relationship is obtained based on the correspondence between the multiple first preset points 9 and the multiple movement information. Specifically, as follows... Figure 2 As shown, with the distance between the viewer's head and the screen 1 remaining constant, multiple first preset points 9 are displayed on the surface of the screen 1. The viewer views multiple first preset points 9 from their position, and their head will rotate at a corresponding angle so that the first preset point 9 they are viewing falls on the viewer's central concave area.

[0087] Furthermore, the plurality of first preset points 9 include the four vertices of the screen 1 and the center point of the screen 1. The head angle includes a horizontal deflection angle and a vertical deflection angle. The screen 1, with its center point as the origin, can determine the location of the first preset points 9 by using horizontal and vertical distances. When the viewing surface of the screen 1 is located at the first preset point 9 in the upper left (X1, Y1), the viewer's head angle is (x1, y1); when the viewing surface of the screen 1 is located at the first preset point 9 in the upper right (X2, Y2), the viewer's head angle is (x2, y2); when the viewing surface of the screen 1 is located at the first preset point 9 in the lower left (X3, Y3), the viewer's head angle is (x3, y3); when the viewing surface of the screen 1 is located at the first preset point 9 in the lower right (X4, Y4), the viewer's head angle is (x4, y4); when the viewing surface of the screen 1 is located at the first preset point 9 in the center (X5, Y5), the viewer's head angle is (x5, y5). Figure 3As shown, based on the above data, a first relationship can be obtained to determine the specific position of the viewer's gaze on screen 1 by obtaining the angle of the viewer's head.

[0088] Furthermore, the first preset point 9 includes image points randomly presented on the surface of the screen 1, and the first relationship can also be obtained based on the above correspondence.

[0089] Obtain a second relationship between the viewer's eye movement information and the position of the viewer's gaze on the surface of screen 1.

[0090] Multiple movement information of the viewer's eyeballs corresponding to multiple second preset points 10 on the surface of screen 1 is acquired, and the second relationship is obtained based on the correspondence between the multiple second preset points 10 and the multiple movement information of the eyeballs. For example... Figure 4 As shown, specifically, based on the fact that the distance between the viewer's eyes and the screen 1 remains unchanged and the viewer's head does not turn as much as possible, multiple second preset points 10 are displayed on the surface of the screen 1. The viewer looks at the multiple second preset points 10 from his position, and his eyeballs rotate at the corresponding angle so that the second preset point 10 he is looking at falls into the viewer's eyes.

[0091] Furthermore, the plurality of second preset points 10 include points symmetrically distributed horizontally along the dividing line in the vertical direction where the center point of the screen is located as the axis of symmetry. That is, the positions of the second preset points 10 can be determined by horizontal distance from the center point of the screen 1. When viewing the second preset point 10 located on the left side (X1', Y1') of the screen 1, the viewer's eye angle is (x1', y1'); when viewing the second preset point 10 located on the right side (X2', Y2') of the screen 1, the viewer's eye angle is (x2', y2'). Where Y1' = Y2', y1' = y2'. In addition, multiple symmetrical or asymmetrical points on the same horizontal line can also be selected. Figure 5 As shown, based on the above data, a second relationship can be obtained to determine the specific position of the viewer's gaze on screen 1 by acquiring the angle of the viewer's head. Of course, if the vertical rotation of the eyeball is taken into account, a similar method can be used to determine the relationship between the head information and the first predetermined point on the screen.

[0092] Furthermore, the second preset point 10 includes image points randomly presented on the surface of the screen 1, and the second relationship can also be obtained based on the above correspondence.

[0093] like Figure 6 and Figure 7 As shown, based on the acquired head movement information and the first relationship, a first position is obtained, and the first position is referenced. Figure 6 andFigure 7 The diagram illustrates point 'a'; based on the acquired eye movement information and the second relationship, the second position is obtained; the viewer's visual center point is determined by superimposing the second position on the first position onto the surface of screen 1, referring to... Figure 6 and Figure 7 The illustration of b in the diagram.

[0094] Specifically, when the head rotates at an angle of (x) k y k When the head rotation angle corresponds to the position on screen 1, i.e., the first position (X), is obtained by the following method. k Y k ),satisfy:

[0095]

[0096]

[0097] When the angle of eyeball rotation is (x) k ',y k When the head rotation angle corresponds to the position described on screen 1, i.e., the second position (X), is obtained by the following method. k ', Y k '), where Y k '=Y1'=Y2', others satisfy:

[0098]

[0099] Based on head movement information and the first relationship derived above, a first position is obtained. This first position is the position on screen 1 corresponding to the angle of the viewer's head, and it represents the approximate position of the target object when the viewer views screen 1. Based on eye movement information and the second relationship derived above, a second position is obtained. This second position is the position on screen 1 corresponding to the angle of the viewer's eyeballs. That is, when the viewer views a target on screen 1, both their head and eyes change position. The second position is derived from the first position; that is, the target object is first positioned within the central recess by head rotation, and then adjusted by eye rotation to accurately position the target object within the central recess. Therefore, the second position is superimposed on the first position to determine the position of the viewer's visual center point on the surface of screen 1. This setup allows the position of the viewer's visual center point when viewing screen 1 to be determined using acquired head and eye movement information. Since the information acquisition frequency is 1-10Hz, near real-time tracking of the gaze can be achieved to create axial chromatic aberration at the visual center point, thereby generating myopic defocus stimulation to inhibit axial elongation. Axial color difference is achieved through the following:

[0100] like Figure 8 As shown, the position on screen 1 corresponding to the center of the viewer's fovea is determined using the above-described method. A first image is displayed in the first imaging area 2, centered on this determined position, and a second image is displayed in the second imaging area 3. The center wavelength of the first image is at least 100 nm longer than the center wavelength of the second image. This arrangement allows the first and second images to work together to create axial chromatic aberration, producing axial myopic defocus in a specific area of ​​the retina, driving the retina forward and thus inhibiting axial elongation. Preferably, to increase the viewer's viewing time and interest, the first and second images are overlaid on the layer containing the original image, which can be a video image, a picture image, or a text image, etc.

[0101] Setting the center wavelength of the first image to be at least 100 nm longer than the center wavelength of the second image aims to ensure that the focal points formed by their images in the eye are positioned front-to-back. By adjusting light intensity, the image in the first imaging region 2 (corresponding to the fovea and parafovea regions of the user's eye) is projected onto the retina. Meanwhile, the image in the second imaging region 3 (corresponding to the peripheral region of the fovea of ​​the user's eye) is projected onto the front of the retina. This creates axial chromatic aberration, generating a tendency to focus on the image in front of the retina, thus pulling the retina forward and inhibiting axial elongation. Preferably, the center wavelength of the first image is between 625-740 nm, and the center wavelength of the second image is between 400-480 nm. This arrangement maximizes the distance between the focal point in front of the retina and the focal point on the retina, thereby increasing the resulting myopic defocus stimulation and inhibiting axial elongation.

[0102] Furthermore, the center of the first image overlaps with the center of the viewer's line of sight on screen 1 as determined above; the layer containing the second image overlays the layer containing the original image, and the center surrounding the second image overlaps with the center of the viewer's line of sight on screen 1. In addition, screen 1 includes a third imaging area 4, which displays the third image and is positioned around the second imaging area 3.

[0103] Furthermore, the central field of view includes a first field of view and a second field of view. The first field of view includes 0-5°, and the second field of view includes 5-9°. The imaging area is determined by the field of view based on the imaging distance and trigonometric function relationships. The first field of view corresponds to the first sub-region 201 of the first imaging area 2, and the second field of view corresponds to the second sub-region 202 of the first imaging area 2. Specifically, the first field of view corresponds to the field of view of the fovea of ​​the viewer's retina, and the second field of view corresponds to the field of view of the parafovea of ​​the viewer's retina. The first image includes a first sub-image and a second sub-image. The first sub-image is presented within the first imaging area 2, and the second sub-image is presented within the second imaging area 3.

[0104] Specifically, at the posterior pole of the human retina, there is a shallow, funnel-shaped depression about 2 mm in diameter, rich in lutein, called the macula. At the center of the macula is a small depression called the fovea. The macula is avascular, containing only cone cells and no rod cells. Light can directly reach the cone cells, which have a high degree of resolution for bright light and color. Therefore, the fovea is the area of ​​the retina with the most acute vision. Rod cells are cells that sense weak light stimuli. They have low light resolution, imperfect color vision, and are sensitive to dim light; they are distributed around the fovea. The fovea region roughly corresponds to a visual field of 0°-5°.

[0105] The first imaging region 2 also includes a concave region, which is connected to the fovea region. The concave region has fewer cone cells than the fovea region and also includes rod cells. Its ability to resolve strong light and color is not as high as that of the fovea region, but it has a certain sensitivity to dark light. The concave region basically corresponds to a field of view of 5°-9°.

[0106] In one embodiment of this example, the first sub-image is circular or a portion of a circle. The wavelength of the first sub-image is 625-740nm, and it displays red. The first sub-image has a first luminance and a first transparency. The luminance of screen 1 is mapped onto [0,10], where "0" represents no light emission and "10" represents maximum luminance. The transparency of screen 1 is mapped onto [0,1], where "0" represents complete transparency with no obscuration and "1" represents complete opacity, i.e., complete obscuration. The first luminance is medium brightness, i.e., a value of 5, and the first transparency is 0.2. Long-wavelength red light can produce a focal plane that is almost directly on the retina, which is closest to the viewer's focal plane, resulting in the clearest image and a better viewing experience. Since the obscuration parameter value is also relatively low, its impact on the viewing experience is relatively small. The second sub-image is annular or a portion of an annular shape. The wavelength of the second sub-image is 625-740nm, and it displays red. The second sub-image has a first luminance and a second transparency, i.e., the first luminance of the second sub-image is 5, and the second transparency is 0.4. In this way, stronger, longer-wavelength red light helps to more easily generate the focal plane closest to the retina, almost directly on the retina, resulting in the clearest image. Simultaneously, because this is not the area where cone cells are most sensitive, although there is greater obscuring of the actual content being played, the impact on the viewing experience is not significant. The second image is a ring or part of a ring, with a wavelength of 400-480nm, displaying blue, and possessing a second luminance and a second transparency. The second luminance is a maximum of 10, and the second transparency is 0.4. This setting is because stronger, shorter-wavelength blue light can more easily generate the image plane furthest from the peripheral front of the retina, resulting in a blurred image—a peripheral myopia defocus effect. At the same time, because the cone cells in the periphery of the fovea are few and not sensitive to color, while rod cells are more numerous and most sensitive to brightness, a strong myopia defocus effect is produced without significantly impacting the viewing experience. The third image is positioned around the second image. The wavelength of the third image is 400-480 nm. The third image has a third luminance and a third transparency; the third luminance is 1, and the third transparency is 0.5. This configuration allows the generation of an image plane located relatively far in front of the peripheral retina with the assistance of weak, short-wavelength blue light. The image appears blurred, and there is also a certain degree of peripheral myopia defocusing effect. Simultaneously, because the brightness here is very low, it creates a strong contrast with the light received by the macula. According to neurophysiological experiments, this greater contrast is also helpful for controlling the axial length of the eye.Therefore, the above parameters also produce a certain myopic defocus effect. Furthermore, since there are very few cone cells and rod cells in the viewer's eye area corresponding to the third image, they are not sensitive to color and brightness. Therefore, the above settings have very little impact on the viewing experience.

[0107] This embodiment establishes a first relationship between head movement information and screen 1, and a second relationship between eye movement information and screen 1. Based on the obtained head movement information and eye movement information, the target point of the viewer on screen 1 is obtained. A first image, a second image, and a third image with axial chromatic aberration are formed with the target point as the center, thereby forming axial myopic defocus. This can suppress the elongation of the eye axis in real time. The method provided in this embodiment can track the viewer's gaze on screen 1 in real time and form axial chromatic aberration at the gaze position, effectively preventing the viewer's eyes from turning away from the myopic defocus stimulation point after viewing fatigue, thus failing to produce the corresponding effect.

[0108] Example 2

[0109] This embodiment provides an axial chromatic aberration imaging system, such as Figure 9 As shown.

[0110] The axial chromatic aberration imaging system includes a capture device 5, a screen 1, and a controller 6. The capture device 5, the screen 1, and the controller 6 are electrically connected.

[0111] A capture device 5 is provided to acquire movement information of the viewer's head and / or eyes. The head movement information includes the distance between the head and screen 1 and the angle of head rotation; the eye movement information includes the distance between the eyes and screen 1, the distance the eyes move, and the direction of movement. The frequency at which the viewer's head and / or eye movement information is acquired is 1-10 Hz.

[0112] Screen 1, which displays an axial chromatic aberration image.

[0113] The controller 6 includes a region determination module 7 and an image control module 8.

[0114] The region determination module 7 determines a first imaging region 2 and a second imaging region 3 on the screen 1 based on the movement information, wherein the first imaging region 2 corresponds to the viewer's central field of view, and the second imaging region 3 corresponds to the viewer's surrounding field of view.

[0115] The region determination module 7 includes a first determination module 701, which acquires a first relationship between viewer head movement information and the position of viewer's gaze on the surface of screen 1; and a second determination module 702, which, through a second relationship between viewer eye movement information and the position of viewer's gaze on the surface of screen 1, determines the central field of view and the surrounding field of view of the viewer's gaze on the surface of screen 1. The region determination module 7 determines the position of the viewer's gaze center point on the surface of screen 1.

[0116] The first determining module 701 includes: acquiring multiple movement information of the viewer's head corresponding to multiple first preset points 9 on the surface of the screen 1, wherein the multiple preset points include the four vertices of the screen 1 and the center point of the screen 1; and obtaining the first relationship based on the correspondence between the multiple first preset points 9 and the multiple movement information.

[0117] The first preset point 9 also includes image points randomly presented on the surface of the screen 1, establishing a correspondence between head movement information and the first preset point 9.

[0118] The second determining module 702 includes: acquiring multiple movement information of the viewer's eyeballs corresponding to multiple second preset points 10 on the surface of the screen 1, wherein the second preset points 10 are points symmetrically distributed in the horizontal direction with the dividing line in the vertical direction where the center point of the screen is located as the axis of symmetry. The second relationship is obtained based on the correspondence between the multiple second preset points 10 and the multiple movement information of the eyeballs.

[0119] The second preset point 10 also includes image points randomly presented on the surface of the screen 1, establishing a correspondence between eye movement information and the second preset point 10.

[0120] The region determination module 7 obtains a first position based on the acquired head movement information and the first relationship; obtains a second position based on the acquired eye movement information and the second relationship; and determines the position of the viewer's gaze center point on the surface of the screen 1 by superimposing the second position on the first position.

[0121] The image control module 8 displays a first image in a first imaging area 2 and a second image in a second imaging area 3. The center wavelength of the first image is 100 nm longer than the center wavelength of the second image. The module controls the first image to overlap the original image, and the center of the first image overlaps with the center point of the viewer's line of sight. The module also controls the second image to overlap the original image, and the second image is concentrically set with the first image.

[0122] Furthermore, the image control module 8 also includes presenting a third image in a third imaging region 4, the third imaging region 4 being disposed around the second imaging region 3.

[0123] The central field of view includes a first field of view, which includes 0-5°, and a second field of view, which includes 5°-9°. The first field of view corresponds to a first sub-region 201 of the first imaging region 2, and the second field of view corresponds to a second sub-region 202 of the first imaging region 2. A first sub-image with a wavelength of 625-740nm is presented in the first sub-region 201, and the first sub-image has a first luminance and a first transparency. A second sub-image with a wavelength of 625-740nm is presented in the second sub-region 202, and the second sub-image has a first luminance and a second transparency. The second image has a wavelength of 400nm-480nm and has a second luminance and a second transparency. The third image has a wavelength of 400nm-480nm and has a third luminance and a third transparency. The third transparency is greater than the second transparency, and the second transparency is greater than the first transparency. The third luminance is greater than the first luminance and less than the second luminance.

[0124] In one embodiment of this example, the first sub-image is circular or a portion of a circle. The wavelength of the first sub-image is 625-740nm, and it displays red. The first sub-image has a first luminance and a first transparency. The luminance of screen 1 is mapped onto [0,10], where "0" represents no light emission and "10" represents maximum luminance. The transparency of screen 1 is mapped onto [0,1], where "0" represents complete transparency with no obscuration and "1" represents complete opacity, i.e., complete obscuration. The first luminance is medium brightness, i.e., a value of 5, and the first transparency is 0.2. Long-wavelength red light can produce a focal plane that is almost directly on the retina, which is closest to the viewer's focal plane, resulting in the clearest image and a better viewing experience. Since the obscuration parameter value is also relatively low, its impact on the viewing experience is relatively small. The second sub-image is annular or a portion of an annular shape. The wavelength of the second sub-image is 625-740nm, and it displays red. The second sub-image has a first luminance and a second transparency, i.e., the first luminance of the second sub-image is 5, and the second transparency is 0.4. In this way, stronger, longer-wavelength red light helps to more easily generate the focal plane closest to the retina, almost directly on the retina, resulting in the clearest image. Simultaneously, because this is not the area where cone cells are most sensitive, although there is greater obscuring of the actual content being played, the impact on the viewing experience is not significant. The second image is a ring or part of a ring, with a wavelength of 400-480nm, displaying blue, and possessing a second luminance and a second transparency. The second luminance is a maximum of 10, and the second transparency is 0.4. This setting is because stronger, shorter-wavelength blue light can more easily generate the image plane furthest from the peripheral front of the retina, resulting in a blurred image—a peripheral myopia defocus effect. At the same time, because the cone cells in the periphery of the fovea are few and not sensitive to color, while rod cells are more numerous and most sensitive to brightness, a strong myopia defocus effect is produced without significantly impacting the viewing experience. The third image is positioned around the second image. The wavelength of the third image is 400-480 nm. The third image has a third luminance and a third transparency; the third luminance is 1, and the third transparency is 0.5. This configuration allows the generation of an image plane located relatively far in front of the peripheral retina with the assistance of weak, short-wavelength blue light. The image appears blurred, and there is also a certain degree of peripheral myopia defocusing effect. Simultaneously, because the brightness here is very low, it creates a strong contrast with the light received by the macula. According to neurophysiological experiments, this greater contrast is also helpful for controlling the axial length of the eye.Therefore, the above parameters also produce a certain myopic defocus effect. Furthermore, since there are very few cone cells and rod cells in the viewer's eye area corresponding to the third image, they are not sensitive to color and brightness. Therefore, the above settings have very little impact on the viewing experience.

[0125] This embodiment is related to Embodiment 1. Therefore, some of the contents involved in Embodiment 1 will not be repeated in this embodiment.

[0126] The system provided in this embodiment is able to track the viewer's gaze on screen 1 in real time, present an axial chromatic aberration image in the area centered on the center of the gaze, thereby generating axial defocus stimulation to the eyes and inhibiting the elongation of the eye axis.

[0127] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An axial chromatic aberration image display system, characterized in that, include: A capture device acquires head and eye movement information of the viewer; the head movement information includes the distance between the head and the screen and the angle of head rotation; the eye movement information includes the distance between the eye and the screen, the distance the eye moves, and the direction of movement. The screen displays an axial chromatic aberration image; The controller includes: The region determination module determines a first imaging region and a second imaging region on the screen based on the movement information, wherein the first imaging region corresponds to the viewer's central field of view, and the second imaging region corresponds to the viewer's surrounding field of view; the region determination module includes: a first determination module, which acquires a first relationship between viewer head movement information and the viewer's line of sight movement position on the screen surface; and a second determination module, which uses a second relationship between viewer eyeball movement information and the viewer's line of sight movement position on the screen surface; and determines the first imaging region and the second imaging region based on the first and second relationships; When the head turns at an angle of ( x k , y k When calculating the head rotation angle, we obtain the position on the screen corresponding to that angle, i.e., the first position. X k , Y k ),satisfy: When the angle of eyeball rotation is ( x k ’ , y k ’ When the head rotation angle is calculated, the position corresponding to the position shown on the screen is obtained, i.e., the second position. X k ’ , Y k ’ ),in Y k ’ = Y 1 ’ = Y 2 ’ Other conditions are met: in,( X 1 , Y 1 () is the first preset point located in the upper left corner of the viewing screen. x 1 , y 1 ) represents the corresponding head angle. X 2 , Y 2 () is the first preset point located in the upper right corner of the viewing screen. x 2 , y 2 ) represents the corresponding head angle. X 3 , Y 3 () is the first preset point located at the lower left of the viewing screen surface. x 3 , y 3 ) represents the corresponding head angle. X 4 , Y 4 () is the first preset point located at the bottom right of the viewing screen. x 4 , y 4 ) represents the corresponding head angle. X 1 ’ , Y 1 ’ () is the second preset point located on the left side of the viewing screen. x 1 ’ , y 1 ’ ) represents the corresponding eyeball angle. X 2 ’ , Y 2 ’ () is the second preset point located on the right side of the viewing screen. x 2 ’ , y 2 ’ This represents the corresponding eyeball angle. The image control module displays a first image in a first imaging area and a second image in a second imaging area, wherein the center wavelength of the first image is more than 100 nm longer than the center wavelength of the second image.

2. The axial chromatic aberration image display system according to claim 1, characterized in that, The axial chromatic aberration image display system includes AR and VR.

3. The axial chromatic aberration image display system according to claim 1, characterized in that, The central field of view includes a viewer's field of view angle of 0-A°; the surrounding field of view includes a viewer's field of view angle of A°-19°, where A≤9°.

4. The axial chromatic aberration image display system according to claim 1, characterized in that, The region determination module determines the position of the viewer's visual center point on the surface of the screen. The image control module controls the first image to be overlaid on the original image, and the center of the first image overlaps with the center point of the viewer's line of sight. The second image is controlled to overlay the original image, and the second image is set concentrically with the first image.

5. The axial chromatic aberration image display system according to claim 1, characterized in that, The first determining module includes: Acquire multiple movement information of the viewer's head corresponding to multiple first preset points on the screen surface, wherein the multiple preset points include the four vertices of the screen and the center point of the screen; The first relationship is obtained based on the correspondence between multiple first preset points and multiple movement information of the head.

6. The axial chromatic aberration image display system according to claim 5, characterized in that, The second determining module includes: Acquire multiple movement information of the viewer's eyeballs corresponding to multiple second preset points on the screen surface, wherein the second preset points include points symmetrically distributed in the horizontal direction with the dividing line in the vertical direction where the center point of the screen is located as the axis of symmetry; The second relationship is obtained based on the correspondence between multiple second preset points and multiple movement information of the eyeball.

7. An axial chromatic aberration image display system according to claim 1, characterized in that, The region determination module includes: The first position is obtained based on the acquired head movement information and the first relationship; The second position is obtained based on the acquired eye movement information and the second relationship; The position of the viewer's visual center point on the surface of the screen is determined by superimposing the second position on the first position.

8. An axial chromatic aberration image display system according to claim 6, characterized in that, The first preset point includes image points randomly presented on the surface of the screen; the second preset point includes image points randomly presented on the surface of the screen.

9. An axial chromatic aberration image display system according to claim 1, characterized in that, The image control module also includes presenting a third image in a third imaging region, which is located around the second imaging region.

10. An axial chromatic aberration image display system according to claim 1, characterized in that, The frequency at which the viewer's head and / or eye movement information is acquired is 1-10 Hz.

11. An axial chromatic aberration image display system according to claim 9, characterized in that, The central field of view includes a first field of view, which includes 0-5°, and a second field of view, which includes 5°-9°. The first field of view corresponds to the first sub-region of the first imaging region, and the second field of view corresponds to the second sub-region of the first imaging region. A first sub-image with a wavelength of 625~740nm is presented in the first sub-region, and the first sub-image has a first luminous brightness and a first transparency; A second sub-image with a wavelength of 625~740nm is presented in the second sub-region, and the second sub-image has a first luminous brightness and a second transparency; The second image has a wavelength of 400nm-480nm and has a second luminous intensity and a second transparency. The wavelength of the third image is 400nm-480nm, and the third image has a third luminous intensity and a third transparency; The third transparency is greater than the second transparency, and the second transparency is greater than the first transparency; The third luminous intensity is greater than the first luminous intensity, and the third luminous intensity is less than the second luminous intensity.

Images