Myopia defocus video image display method and system based on axial chromatic aberration

Abstract

The present disclosure belongs to the field of image display, and particularly relates to a myopia defocus video image display method and system based on axial chromatic aberration, the method comprising: obtaining a first layer of a first frame image; applying a second layer on the first layer, the second layer having a defocus ratio of light intensity between each primary color based on axial chromatic aberration to form myopia defocus; wherein each primary color in the second layer comprises a first primary color having a first wavelength and a second primary color having a second wavelength, the first wavelength being longer than the second wavelength by more than 130 nm; and mixing the first layer and the second layer according to a predetermined overall light intensity ratio, wherein the overall light intensity of the second layer is greater than the overall light intensity of the first layer. The video image forms axial chromatic aberration capable of causing the human eye to produce myopia defocus, and the eye can achieve the effect of inhibiting eye axis elongation through myopia defocus.

Description

Technical Field

[0001] This disclosure pertains to the field of image display, and more specifically relates to a method and system for displaying myopic defocused video images based on axial chromatic aberration. Background Technology

[0002] Based on neurophysiological principles and clinical experimental results, the human optic nerve system produces a corresponding LCA effect in response to light of certain wavelength (color) combinations in an image. This focuses different colors of light onto different focal planes in the eye, with shorter wavelengths focusing further forward and longer wavelengths focusing further back. The different focal points of different light sources create a defocus difference, which stimulates the optic nerve and, in turn, modulates the eye's refractive system through central nervous system processing. Summary of the Invention

[0003] 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 a method and system for displaying myopic defocus video images based on axial chromatic aberration, so that the displayed image has a defocus difference to suppress axial elongation.

[0004] To address the aforementioned problems, the technical solutions provided in this disclosure include:

[0005] A method for displaying myopic defocus video images based on axial chromatic aberration is provided, comprising: acquiring a first layer of a first frame image; applying a second layer to the first layer, wherein the light intensities of each primary color in the second layer have a defocus ratio based on axial chromatic aberration to form myopic defocus; wherein each primary color in the second layer includes a first primary color having a first wavelength and a second primary color having a second wavelength, the first wavelength being at least 130 nm longer than the second wavelength; and mixing the first layer and the second layer according to a predetermined overall light intensity ratio, wherein the overall light intensity of the second layer is greater than the overall light intensity of the first layer.

[0006] The above settings enable the first frame image to form an axial chromatic aberration capable of producing myopic defocus, thereby suppressing axial elongation. By mixing the first and second layers according to a predetermined overall light intensity ratio, a video image capable of producing defocus stimulation can be obtained almost in real time with almost no computational burden. Setting the overall intensity of the second layer to be greater than that of the first layer is intended to increase the proportion of the second layer in the overall light intensity. By adjusting the defocus ratio of the second layer, a myopic defocus image can be produced when the first and second layers are presented together.

[0007] Preferably, each primary color includes a first primary color, a second primary color, and a third primary color based on additive color mixing; wherein the wavelength of the first primary color is 625nm to 740nm; the wavelength of the second primary color is 492nm to 455nm; and the wavelength of the third primary color is 577nm to 492nm.

[0008] The RGB color mechanism, which is applicable to most colors, is used to control the displayed colors. The wavelengths of each primary color are limited to a certain range, making it convenient to adjust the intensity ratio through the RGB color mechanism.

[0009] Preferably, the defocus ratio changes over time, with the ratio of the light intensity of the first primary color in the defocus ratio increasing over time, and the ratio of the light intensity of the second primary color in the defocus ratio decreasing over time.

[0010] The proportion of primary color light increases, so that the focal point of primary color light moves towards the retina over time, allowing the observer to gradually adapt and thus prevent the observer from losing interest and extend the observation time. At the same time, the focal point of secondary color light moves forward away from the retina. At this time, under the combined effect of the focal points of primary and secondary color light, myopic defocus occurs, which inhibits the elongation of the eye axis.

[0011] Preferably, mixing the first layer and the second layer according to a predetermined overall light intensity ratio includes: the overall light intensity of the second layer being more than twice the overall light intensity of the first layer.

[0012] This setting increases the overall light intensity difference between the second layer and the first layer. That is, the greater the proportion of the overall light intensity of the second image in the overall light intensity of the first frame image, the less the overall light intensity ratio of the first frame image is affected by the overall light intensity ratio of the first image. Thus, by adjusting the defocus ratio, the effect of axial color difference in the first frame image is better.

[0013] Preferably, the change of the defocus ratio over time includes: the defocus ratio changing periodically over time; at the beginning of a period, the defocus ratio starts to change from an initial ratio; within a period, the ratio of the light intensity of the first primary color in the defocus ratio increases over time, and the ratio of the light intensity of the second primary color decreases over time.

[0014] This setup provides the eye with a gradual adaptation process and time to the increased red light, allowing it to gradually receive the color change. While ensuring a good viewing experience, it subtly extends the viewing time during observation, thus better inhibiting axial elongation. Increasing the red light stimulation received by the eye causes the eye to gradually focus more clearly on the first primary color as the intensity ratio of the first primary color increases. That is, the focal point of the first primary color light entering the eye gradually moves from behind the retina towards the retina, while the focal point of the second primary color gradually moves from in front of the retina away from the retina. This exacerbates the degree of myopic defocus and increases the stimulation required to shorten the axial length, thus inhibiting axial elongation.

[0015] Preferably, the defocus ratio at a certain moment within a cycle is (10n+a):(6n+b):(9n+c), where n is a multiple, a is a first parameter positively correlated with time, b is a second parameter negatively correlated with time, and c is a third parameter positively correlated with time; the ratio of light intensity of each primary color in the first layer at that moment is e:f:g, where e is the light intensity ratio of the first primary color, f is the light intensity ratio of the second primary color, g is the light intensity ratio of the third primary color, and 3e≤10n, 3f≤6n, 3g≤9n; then the overall light intensity ratio at that moment is (10n+a+e):(6n+b+f):(9n+c+g).

[0016] The above simple superposition calculation is used to obtain the overall light intensity ratio that can produce myopia defocus stimulation.

[0017] Preferably, the second layer is set in a first region of the first frame image; the first region is the area where the observer's field of view is between 0° and 12°.

[0018] This setup corresponds to the fovea and fovea regions of the human eye. The fovea is the most visually sensitive area, capable of sensitively receiving light from the outside world, while the fovea is an important area for accommodation, and the stimulation received there can activate the eye's accommodative function. Placing the second layer in the first area sensitively stimulates the eye and activates its accommodative function to better generate corresponding myopic defocus based on axial chromatic aberration, thereby inhibiting axial elongation.

[0019] Preferably, a third layer is applied to the second region of the first layer, where the second region is the area where the observer's field of view is between 12° and 15°; the third layer includes peripheral defocused stimulus patterns.

[0020] The third layer includes a peripheral defocus stimulation pattern, which is a pattern with a certain degree of blur. The peripheral defocus stimulation pattern with blur can simulate the state when the image is in front of the human eye's retina, thereby causing the retina to tend to move forward, inhibiting the elongation of the eye axis, and even causing the eye axis to shorten, thereby achieving the effect of reducing the degree of myopia.

[0021] Preferably, the plurality of peripheral defocused stimulation patterns are uniformly arranged in the second region.

[0022] The second region generates uniform and balanced peripheral defocus stimulation. The uniform stimulation can provide the observer with a good viewing experience, making the observer tend to view for a long time, thereby improving the effect of inhibiting axial elongation and even slowing down the degree of myopia.

[0023] Preferably, a fourth layer is applied on top of the first layer; the first layer, the second layer, the third layer, and the fourth layer are mixed according to a predetermined overall brightness to present the first frame image; the predetermined overall brightness includes the overall brightness of the first frame image varying within the range of 200 nits to 300 nits.

[0024] By adjusting the overall brightness to stimulate the optic nerve, axial elongation can be inhibited. Furthermore, adjusting the overall brightness of the first frame image using a superposition method effectively speeds up the video image display process without requiring complex calculations, achieving the effect of inhibiting axial elongation quickly and easily.

[0025] A1. A myopia defocus video image display system based on axial chromatic aberration, characterized in that it comprises:

[0026] A display used to show off-focus video images;

[0027] The module retrieves the first layer of the first frame image;

[0028] The first processing module applies a second layer to the first layer, wherein the intensity of light of each primary color in the second layer has a defocus ratio based on axial color difference to form myopia defocus; wherein each primary color in the second layer includes a first primary color having a first wavelength and a second primary color having a second wavelength, wherein the first wavelength is more than 130nm longer than the second wavelength.

[0029] The first layer and the second layer are mixed according to a predetermined overall light intensity ratio, wherein the overall light intensity of the second layer is greater than the overall light intensity of the first layer.

[0030] A2. A myopia defocus video image display system based on axial color difference according to claim A1, characterized in that each primary color includes a first primary color, a second primary color, and a third primary color based on additive color mixing;

[0031] The wavelength of the first primary color is 625nm to 740nm; the wavelength of the second primary color is 492nm to 455nm; and the wavelength of the third primary color is 577nm to 492nm.

[0032] A3. A myopia defocus video image display system based on axial chromatic aberration according to claim A2, characterized in that the defocus ratio changes with time, the ratio of the light intensity of the first primary color in the defocus ratio increases with time, and the ratio of the light intensity of the second primary color in the defocus ratio decreases with time.

[0033] A4. A myopia defocus video image display system based on axial chromatic aberration according to claim A3, characterized in that, mixing the first layer and the second layer according to a predetermined overall light intensity ratio includes:

[0034] The overall light intensity of the second layer is more than twice that of the overall light intensity of the first layer.

[0035] A5. A myopia defocus video image display system based on axial chromatic aberration according to claim A4, characterized in that the change of the defocus ratio over time includes:

[0036] The defocus ratio changes periodically over time;

[0037] At the beginning of a cycle, the defocus ratio begins to change from an initial ratio;

[0038] Within one cycle, the ratio of the light intensity of the first primary color in the defocus ratio increases with time, while the ratio of the light intensity of the second primary color decreases with time.

[0039] A6. A myopia defocus video image display system based on axial chromatic aberration according to claim A5, characterized in that,

[0040] The defocus ratio at a certain moment within a cycle is (10n+a):(6n+b):(9n+c), where n is a multiple, a is a first parameter positively correlated with time, b is a second parameter negatively correlated with time, and c is a third parameter positively correlated with time.

[0041] At this moment, the ratio of light intensity of each primary color in the first layer is: e:f:g, where e is the light intensity ratio of the first primary color, f is the light intensity ratio of the second primary color, g is the light intensity ratio of the third primary color, and 3e≤10n, 3f≤6n, 3g≤9n;

[0042] The overall light intensity ratio at that moment is: (10n+a+e):(6n+b+f):(9n+c+g).

[0043] A7. A myopia defocus video image display system based on axial chromatic aberration according to claim A5, characterized in that,

[0044] The second layer is set in the first region of the first frame image; the first region is the area where the observer's field of view is between 0° and 12°.

[0045] A8. A myopia defocus video image display system based on axial chromatic aberration according to claim A7, characterized in that,

[0046] The system further includes a second processing module, which adds a third layer to the second region of the first layer, where the second region is the area where the observer's field of view is between 12° and 15°; the third layer includes peripheral defocused stimulus patterns.

[0047] A9. A myopia defocus video image display system based on axial chromatic aberration according to claim A8, characterized in that a plurality of peripheral defocus stimulation patterns are uniformly arranged in the second region.

[0048] A10. A myopia defocus video image display system based on axial chromatic aberration according to claim A9, characterized in that,

[0049] The system further includes a third processing module, which applies a fourth layer onto the first layer; the second mixing module mixes the first layer, the second layer, the third layer, and the fourth layer according to a predetermined overall brightness to present the first frame image;

[0050] The predetermined overall brightness includes the overall brightness of the first frame image varying within the range of 200 nits to 300 nits.

[0051] Compared with existing technologies, this disclosure sets up multiple layers and generates myopic defocus, peripheral defocus, and optic nerve stimulation to produce a regulatory effect through the interaction between the layers. Under the action of various mechanisms, the elongation of the axial length of the eye is effectively suppressed. In addition, the video image display method involved in this disclosure has an extremely fast processing procedure. It can produce the display method with only simple superposition calculations, thereby reducing the requirements for hardware devices such as chips and making it easier to implement. Attached Figure Description

[0052] 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.

[0053] Figure 1 This is a schematic diagram illustrating the principle of myopia defocus.

[0054] Figure 2 This is a schematic diagram illustrating the principle of peripheral defocusing.

[0055] Figure 3 This is a flowchart of the steps of a myopic defocus video image display method based on axial chromatic aberration disclosed herein;

[0056] Figure 4 This is a diagram illustrating how red and blue light focus when they enter the human eye under natural conditions.

[0057] Figure 5 A schematic diagram illustrating how red and blue light are focused into the human eye after the proportion of red light is increased;

[0058] Figure 6 This is a schematic diagram of a myopia defocus video image display system based on axial chromatic aberration disclosed herein. Detailed Implementation

[0059] 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.

[0060] 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.

[0061] The widespread use of display devices has increased the burden on the human eye. Under conditions of prolonged close-range observation, the ciliary body needs to change the shape of the lens in order for the image entering the eye to fall on the retina, thus affecting the focal length of the lens. If the eye is in a state of accommodation for a long time, and the ciliary body remains in an overly tense state, it is prone to developing into true myopia. This phenomenon is becoming increasingly common, especially among adolescents and children.

[0062] Axial myopia defocusing has been shown to have a certain effect on inhibiting myopia. Its working principle is as follows: Figure 1 As shown, when the human eye focuses on an image plane, that image plane can be clearly imaged on the retina 1, and is called the principal image plane. If, through optical means, another image plane is presented in front of the retina 1 when the principal image plane falls on the retina 1, it is called the defocus image plane. At this time, the two image planes work together to form axial myopic defocus, which makes the eye want to see the image presented in front of the retina 1 clearly, causing the retina 1 to move forward to inhibit the elongation of the eye axis, and may even reduce the degree of myopia.

[0063] Different colors of light have different wavelengths and different refractive indices in the same medium, causing them to focus at different locations when they enter the eye. When more than one color of light enters the eye, the image of the longest wavelength light will fall behind, and the image of the shortest wavelength light will fall in front. These two colors of light form different focal points on the axis, creating axial chromatic aberration. Furthermore, if the focal point of light falling behind the retina can be moved forward to the retina, the focal point of light that was originally focused in front of the retina will also move forward, away from the retina, thus causing myopic defocus.

[0064] In addition, peripheral defocus also plays a role in inhibiting axial elongation. Its working principle is as follows: Figure 2 As shown, by means of optical means, the image of the area located on the periphery of the area corresponding to the central field of vision is placed in front of the retina, so as to stimulate the eye to adjust and project the image of the peripheral area onto the retina, thereby causing the retina to tend to move forward, inhibiting the elongation of the eye axis, and even causing the eye axis to shorten, thereby achieving the effect of reducing the degree of myopia.

[0065] Based on the above principles, this specific embodiment provides a method and system for displaying myopic defocused video images based on axial chromatic aberration.

[0066] Example 1

[0067] This embodiment provides a method for displaying myopic defocused video images based on axial chromatic aberration, such as... Figure 3 As shown.

[0068] The myopia defocus video image display method based on axial chromatic aberration includes:

[0069] Get the first layer of the first frame image.

[0070] Video refers to the technology of capturing, recording, processing, storing, transmitting, and reproducing a series of still images in the form of electrical signals. Video consists of multiple consecutive still images, with one still image being a frame. When the continuous image changes exceed 24 frames per second, the human eye cannot distinguish a single still image due to the principle of visual persistence.

[0071] The myopic defocus video image display method based on axial chromatic aberration provided in this embodiment requires processing the layers of each frame of the original video to create an axial chromatic aberration that produces myopic defocus.

[0072] Obtaining the first layer of the first frame image includes acquiring the first frame image in the myopic defocus video image based on axial chromatic aberration, and acquiring its first layer, where the first layer displays the frame images of the original video. The first frame image includes each static image in the myopic defocus video image. The static image includes various primary colors, and various colors are displayed by superimposing primary colors of different intensities and types.

[0073] During video playback, the intensity ratios of the primary colors in each frame of a still image can vary significantly. Analyzing each frame to determine the actual intensity ratios of the primary colors and then adjusting the values ​​to ensure each frame of the presented video exhibits axial chromatic aberration that creates near-vision defocus is a complex process requiring extremely high computational power and speed, making it practically impossible to implement under normal circumstances.

[0074] Based on the above problems, this embodiment proposes a simple and fast method to enable each frame of a video image to have an axial chromatic aberration that forms a near-real-time defocus.

[0075] A second layer is applied on top of the first layer, wherein the intensity of light of each primary color in the second layer has a defocus ratio based on axial color difference to form myopic defocus.

[0076] Applying a second layer to the first layer includes directly overlaying the second layer onto the first layer and blending them in a certain way so that the image formed by the first and second layers has a predetermined overall light intensity ratio. Blending in a certain way includes setting the transparency of the second layer to partially reveal the image displayed by the first layer, i.e., achieving the predetermined overall light intensity ratio through the superposition of the light intensities of each layer. The predetermined overall light intensity ratio can create axial color difference, meaning that the wavelength difference between at least two primary colors in the image formed by the first and second layers is such that when these two primary colors are imaged in the human eye, the focal point of one primary color falls in front of the retina, and the focal point of the other primary color falls behind the retina, and the distance between the focal points of these two primary colors is sufficient to cause myopic defocus in the human eye.

[0077] The second layer includes various primary colors, the light intensity of each primary color forming a defocus ratio, the defocus ratio being able to form an axial chromatic aberration, that is, each primary color includes at least two primary colors with a wavelength difference greater than 130nm, so that the eye can produce myopic defocus under the action of the first primary color and the second primary color, thereby inhibiting axial elongation.

[0078] Furthermore, each primary color includes primary colors based on additive color mixing. Each primary color includes a first primary color having a first wavelength, a second primary color having a second wavelength, and a third primary color having a third wavelength. The first wavelength is 625nm–740nm, the second wavelength is 492–455nm, and the third wavelength is 577nm–492nm.

[0079] Under natural conditions, for the three primary colors of light, red light has a longer wavelength than the other two. When red light and one of the other two primary colors simultaneously enter the human eye, the focal point of the red light will fall behind the retina, while the focal point of the other light will fall in front of or on the retina. For example... Figure 4 As shown, when red and blue light enter the eye, the focal point of red light will fall behind the retina, while the focal point of blue light will fall in front of the retina.

[0080] On the other hand, when the various spectra of light entering the eye are in different proportions and have different contrasts, the eye will focus clearly on the light that occupies a larger proportion, that is, form the principal image that falls on the retina; while other light will be refracted to different degrees when it enters the eye due to the difference in their wavelengths, and form focal points at different positions.

[0081] Therefore, by adjusting the proportions of each primary color in the incoming light, and maximizing the proportion of red light, the focal point of red light in the eye continuously moves closer to the retina, while the focal points of other primary colors continuously move in front of the retina. This stimulates the eye to produce myopic defocus, inhibiting axial elongation. Figure 5 As shown, the proportion of red light is increased until the focus of red light in the human eye falls on the retina, at which point the focus of blue light in the human eye will shift away from the retina.

[0082] Based on the above principle, in the defocus ratio, the ratio corresponding to the light intensity of the first primary color is set to be the largest, so as to make the focal point of the light of the first primary color image on the retina as much as possible; the ratio corresponding to the light intensity of the second primary color is set to be the smallest.

[0083] Furthermore, the overall light intensity of the second layer is greater than that of the first layer. This setting results in the second layer having a larger proportion of overall light intensity in the image presented by the first and second layers. This allows the light intensity ratio of each primary color in the image presented by the first and second layers to be changed by adjusting the defocus ratio of the second layer alone, thereby forming axial color difference, producing myopic defocus, and thus inhibiting axial elongation.

[0084] Furthermore, the overall light intensity of the second layer is more than twice that of the first layer. The greater the difference in overall light intensity between the second layer and the first layer, that is, the greater the proportion of the overall light intensity of the second image in the overall light intensity of the first frame image, the less the overall light intensity ratio of the first frame image is affected by the overall light intensity ratio of the first image. Therefore, the better the effect of adjusting the defocus ratio to produce axial chromatic aberration in the first frame image.

[0085] The defocus ratio changes over time. During this change, the proportion of the first primary color's light intensity within the defocus ratio increases, while the proportion of the second primary color's light intensity decreases. This setting increases the red light stimulation received by the human eye. As the proportion of the first primary color's light intensity increases, the eye gradually tends to focus clearly on the first primary color's light. That is, the focal point of the first primary color's light entering the eye gradually moves from behind the retina towards the retina, while the focal point of the second primary color gradually moves from in front of the retina away from the retina. This exacerbates the degree of myopic defocus and increases the stimulation required to shorten the axial length by inhibiting eye elongation. The change in the defocus ratio over time provides the eye with a gradual adaptation process and time to the increased red light, allowing it to gradually receive the color change. While ensuring a good viewing experience, this subtly extends the viewing time during observation, thus better inhibiting eye elongation.

[0086] Furthermore, the defocus ratio changes periodically over time. Specifically, within one cycle, the initial defocus ratio is the initial ratio, in which the ratio of the light intensity of the first primary color increases over time, while the ratio of the light intensity of the second primary color decreases over time. At the start of the next cycle, the ratio of the light intensity of the first primary color abruptly decreases to the ratio corresponding to the initial ratio, while the ratio of the light intensity of the second primary color abruptly increases to the ratio corresponding to the initial ratio. This arrangement allows the human eye time to receive cyclical stimuli and then rest, providing the observer with a good visual experience.

[0087] Preferably, the initial defocus ratio is expressed as R:B:G, where R is the light intensity ratio of the first primary color, B is the light intensity ratio of the second primary color, and G is the light intensity ratio of the third primary color. The initial ratio is 10:6:9. Within one cycle, the light intensity ratio of the first primary color increases to 5% of its original value, the light intensity ratio of the second primary color decreases to 10% of its original value, and the light intensity ratio of the third primary color increases to 5% of its original value. That is, at the end of one cycle, the defocus ratio is 10.5:5.4:9.45, and at the beginning of the next cycle, the defocus ratio instantly changes to 10:6:9.

[0088] The overall light intensity ratio of the first frame image, based on the aforementioned change in defocus ratio over time, can be obtained through the following process:

[0089] The defocus ratio at a certain moment within a cycle is (10n+a):(6n+b):(9n+c), where n is a multiple, a is a first parameter positively correlated with time, b is a second parameter negatively correlated with time, and c is a third parameter positively correlated with time.

[0090] At this moment, the light intensity ratio of each primary color in the first layer is e:f:g, where e is the light intensity ratio of the first primary color, f is the light intensity ratio of the second primary color, and g is the light intensity ratio of the third primary color, and 3e≤10n, 3f≤6n, 3g≤9n. Setting the relationship between the light intensity ratios of the primary colors in the first layer and the second layer ensures that the light intensity of the second layer accounts for a larger proportion of the light intensity in the first frame image. This allows for the creation of axial chromatic aberration in the first frame image by controlling the defocus ratio, thereby achieving myopia defocus to suppress axial elongation.

[0091] The overall light intensity ratio at that moment is: (10n+a+e):(6n+b+f):(9n+c+g).

[0092] For example, the light intensity ratios of the primary colors in two consecutive frames on the first layer are 5:2:3 and 3:3:4, respectively, and the corresponding defocus ratios are 10:6:9 and 10.1:5.9:9.1. Based on the above expression, when n=2, the overall light intensity ratios of the two consecutive frames are 25:14:21 and 23.2:14.8:22.2, respectively, which are 10:5.6:8.4 and 10 6.389.57, which are basically close to the defocus ratio of 10:6:9. That is, the first frame image forms an axial chromatic aberration, which can produce myopic defocus when it is incident on the human eye to suppress the elongation of the eye axis.

[0093] In summary, by overlaying the first and second layers and changing the defocus ratio of the second layer, it is possible to present video images with axial chromatic aberration in real time and quickly with almost no computational burden. Moreover, the axial chromatic aberration of the video image is sufficient to produce a nearsighted defocus effect on the eyes.

[0094] Furthermore, the second layer is set in the first region of the first frame image, which is the area where the observer's viewing angle is between 0° and 12°. This setting corresponds to the fovea and parafovea regions of the human eye. The fovea region is the most visually sensitive area, capable of sensitively receiving light from the outside world, while the parafovea region is an important area for accommodation, and the stimulation received there can stimulate the eye's accommodation function. Setting the second layer in the first region sensitively stimulates the human eye and stimulates its accommodation function to better generate corresponding myopic defocus according to axial chromatic aberration, thereby inhibiting axial elongation.

[0095] A third layer is applied to the second region of the first layer, corresponding to an area between 12° and 15° of the observer's field of view. The third layer includes a peripheral defocus stimulation pattern, which is a pattern with a certain degree of blur. This blurred peripheral defocus stimulation pattern can simulate the state of an image appearing in front of the retina, causing the retina to tend to move forward, inhibiting axial elongation, and even shortening the axial length, thereby reducing the degree of myopia. The micro-stimulation pattern can simulate the image presented when a peripheral object is in front of the retina through its degree of blur, making the eye perceive an image falling in front of the retina, generating a forward-moving force, and thus inhibiting axial elongation.

[0096] Under the combined stimulation of myopic defocus and peripheral defocus, the axial length of the eye can be effectively prevented from elongating, and may even be shortened.

[0097] The peripheral defocus stimulation pattern is uniformly distributed within the second region, which corresponds to the area between 12° and 15° of the human eye's field of view, i.e., the area surrounding the fovea and parafovea. This generates uniform and balanced peripheral defocus stimulation within the second region. This uniform stimulation provides a good viewing experience for the observer, encouraging prolonged viewing and thus enhancing the inhibition of axial elongation, potentially even slowing the progression of myopia. Furthermore, the transparency of the second region is set to a near-opaque value to effectively regulate the visual neural network.

[0098] In one embodiment of this example, the peripheral defocusing stimulation pattern includes a dead leaf pattern. In the second area, 12-24 circular dead leaf patterns are evenly arranged around the circumference of the viewing plane. Alternatively, the second area can be filled with circular dead leaf patterns.

[0099] A fourth layer is applied on top of the first layer to alter the overall brightness of the first frame image. The first frame image, composed of the first, second, third, and fourth layers, is then blended according to a predetermined overall brightness, which includes a variation of the overall brightness of the first frame image within the range of 200 nits to 300 nits.

[0100] When an observer watches a video whose brightness changes, it stimulates the optic nerve. The stimulation effect is more pronounced when the brightness frequency change is around 2Hz, which can prevent the axial length of the human eye's refractive system from elongating and may even cause it to shorten. Correspondingly, the overall brightness change should be controlled between 200 nits and 300 nits.

[0101] For example, the overall brightness of the first, second, and third layers after mixing is 150 nits. When a fourth layer is superimposed, the brightness of the fourth layer varies between 50 nits and 150 nits, thereby causing the overall brightness of the first frame image to vary between 200 nits and 300 nits.

[0102] By adjusting the overall brightness of the first frame image using the simple superposition method described above, the speed of video image display can be effectively accelerated without complex calculations, thus achieving the effect of suppressing axial elongation in a simple and quick way.

[0103] This embodiment uses multiple layers and the interactions between these layers to generate myopic defocus, peripheral defocus, and optic nerve stimulation to induce accommodation. Through these mechanisms, axial elongation is effectively suppressed. Furthermore, the video image display method described in this embodiment features extremely fast processing; only simple overlay calculations are needed to produce the display output, thus reducing the requirements for hardware devices such as chips and making it easier to implement.

[0104] Example 2

[0105] This embodiment provides a myopia defocus video image display system based on axial chromatic aberration, such as... Figure 6 As shown.

[0106] The myopia defocus video image display system based on axial chromatic aberration includes:

[0107] A display for displaying myopic defocused screen images based on axial chromatic aberration.

[0108] The module retrieves the first layer of the first frame image.

[0109] A first processing module applies a second layer to a first layer, wherein the light intensities of each primary color in the second layer have a defocus ratio based on axial color difference to form myopic defocus; wherein each primary color in the second layer includes a first primary color having a first wavelength and a second primary color having a second wavelength, the first wavelength being more than 130 nm longer than the second wavelength; and mixes the first layer and the second layer according to a predetermined overall light intensity ratio, wherein the overall light intensity of the second layer is greater than the overall light intensity of the first layer.

[0110] The second processing module adds a third layer to the second region of the first layer, where the second region is the area where the observer's field of view is between 12° and 15°; the third layer includes peripheral defocused stimulus patterns.

[0111] The third processing module applies a fourth layer onto the first layer; the second mixing module mixes the first layer, the second layer, the third layer, and the fourth layer according to a predetermined overall brightness to present the first frame image; the predetermined overall brightness includes the overall brightness of the first frame image varying within 200 nits to 300 nits.

[0112] The specific processing methods and technical effects of the first, second, and third processing modules have been described in detail in Embodiment 1, and will not be repeated here.

[0113] This embodiment provides a myopia defocus video image display system based on axial chromatic aberration. It processes multiple layers of the video image using multiple modules, and through the interaction between these layers, it generates myopia defocus, peripheral defocus, and stimulation of the optic nerve to produce a regulatory effect. Under the action of these mechanisms, it effectively inhibits axial elongation. Furthermore, the video image processing module involved in this embodiment has an extremely fast processing speed; it can produce the image to be displayed with only simple overlay calculations, thereby reducing the requirements for hardware devices such as chips and making it easier to implement.

[0114] 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. A method for displaying myopic defocused video images based on axial chromatic aberration, characterized in that, include: Get the first layer of the first frame image; A second layer is applied on top of the first layer. The light intensities of each primary color in the second layer have a defocus ratio based on axial chromatic aberration to form a myopic defocus. Each primary color in the second layer includes a first primary color with a first wavelength and a second primary color with a second wavelength, where the first wavelength is at least 130 nm longer than the second wavelength. In the defocus ratio, the ratio corresponding to the light intensity of the first primary color is the largest, and the ratio corresponding to the light intensity of the second primary color is the smallest. The defocus ratio changes over time, with the ratio of the light intensity of the first primary color increasing over time and the ratio of the light intensity of the second primary color decreasing over time. The change in the defocus ratio over time includes: the defocus ratio changing periodically over time; at the beginning of a period, the defocus ratio starts changing from an initial ratio; within a period, the ratio of the light intensity of the first primary color increases over time, and the ratio of the light intensity of the second primary color decreases over time. The first layer and the second layer are mixed according to a predetermined overall light intensity ratio, wherein the overall light intensity of the second layer is greater than the overall light intensity of the first layer.

2. The method for displaying myopic defocused video images based on axial chromatic aberration according to claim 1, characterized in that, The primary colors include the first primary color, the second primary color, and the third primary color based on the additive color mixing method; The wavelength of the first primary color is 625nm~740nm; the wavelength of the second primary color is 492~455nm; and the wavelength of the third primary color is 577nm~492nm.

3. The method for displaying myopic defocused video images based on axial chromatic aberration according to claim 1, characterized in that, The first layer and the second layer are mixed according to a predetermined overall light intensity ratio, including: The overall light intensity of the second layer is more than twice that of the overall light intensity of the first layer.

4. The method for displaying myopic defocus video images based on axial chromatic aberration according to claim 1, characterized in that, The defocus ratio at a certain moment within a cycle is (10n+a):(6n+b):(9n+c), where n is a multiple, a is a first parameter positively correlated with time, b is a second parameter negatively correlated with time, and c is a third parameter positively correlated with time. At this moment, the ratio of light intensity of each primary color in the first layer is: e:f:g, where e is the light intensity ratio of the first primary color, f is the light intensity ratio of the second primary color, g is the light intensity ratio of the third primary color, and 3e≤10n, 3f≤6n, 3g≤9n; The overall light intensity ratio at that moment is: (10n+a+e):(6n+b+f):(9n+c+g).

5. The method for displaying myopic defocused video images based on axial chromatic aberration according to claim 1, characterized in that, The second layer is set in the first region of the first frame image; the first region is the area where the observer's field of view is between 0° and 12°.

6. The method for displaying myopic defocus video images based on axial chromatic aberration according to claim 5, characterized in that, Apply a third layer to the second region of the first layer, where the observer's field of view is between 12° and 15°. The third layer includes peripheral out-of-focus stimulating patterns.

7. A method for displaying myopic defocus video images based on axial chromatic aberration according to claim 6, characterized in that, Multiple peripheral defocused stimulation patterns are evenly distributed within the second region.

8. A method for displaying myopic defocused video images based on axial chromatic aberration according to claim 7, characterized in that, Apply a fourth layer on top of the first layer; The first frame image is presented by mixing the first layer, the second layer, the third layer, and the fourth layer according to the predetermined overall brightness. The predetermined overall brightness includes the overall brightness of the first frame image varying within the range of 200 nits to 300 nits.

9. A myopia defocus video image display system based on axial chromatic aberration, characterized in that, include: A display used to show off-focus video images; The module retrieves the first layer of the first frame image; A first processing module applies a second layer to the first layer. The light intensities of each primary color in the second layer have a defocus ratio based on axial chromatic aberration to form a myopic defocus. Each primary color in the second layer includes a first primary color with a first wavelength and a second primary color with a second wavelength, where the first wavelength is at least 130 nm longer than the second wavelength. In the defocus ratio, the ratio corresponding to the light intensity of the first primary color is the largest, and the ratio corresponding to the light intensity of the second primary color is the smallest. The defocus ratio changes over time, with the ratio of the light intensity of the first primary color increasing over time and the ratio of the light intensity of the second primary color decreasing over time. The change in the defocus ratio over time includes: the defocus ratio changing periodically over time; at the beginning of a period, the defocus ratio starts changing from an initial ratio; within a period, the ratio of the light intensity of the first primary color increases over time, and the ratio of the light intensity of the second primary color decreases over time. The first layer and the second layer are mixed according to a predetermined overall light intensity ratio, wherein the overall light intensity of the second layer is greater than the overall light intensity of the first layer.

10. A myopia defocus video image display system based on axial chromatic aberration according to claim 9, characterized in that, The primary colors include the first primary color, the second primary color, and the third primary color based on the additive color mixing method; The wavelength of the first primary color is 625nm~740nm; the wavelength of the second primary color is 492~455nm; and the wavelength of the third primary color is 577nm~492nm.

11. A myopia defocus video image display system based on axial chromatic aberration according to claim 9, characterized in that, The first layer and the second layer are mixed according to a predetermined overall light intensity ratio, including: The overall light intensity of the second layer is more than twice that of the overall light intensity of the first layer.

12. A myopia defocus video image display system based on axial chromatic aberration according to claim 9, characterized in that, The defocus ratio at a certain moment within a cycle is (10n+a):(6n+b):(9n+c), where n is a multiple, a is a first parameter positively correlated with time, b is a second parameter negatively correlated with time, and c is a third parameter positively correlated with time. At this moment, the ratio of light intensity of each primary color in the first layer is: e:f:g, where e is the light intensity ratio of the first primary color, f is the light intensity ratio of the second primary color, g is the light intensity ratio of the third primary color, and 3e≤10n, 3f≤6n, 3g≤9n; The overall light intensity ratio at that moment is: (10n+a+e):(6n+b+f):(9n+c+g).

13. A myopia defocus video image display system based on axial chromatic aberration according to claim 9, characterized in that, The second layer is set in the first region of the first frame image; the first region is the area where the observer's field of view is between 0° and 12°.

14. A myopia defocus video image display system based on axial chromatic aberration according to claim 13, characterized in that, The system further includes a second processing module, which adds a third layer to the second region of the first layer, where the second region is the area where the observer's field of view is between 12° and 15°; the third layer includes peripheral defocused stimulus patterns.

15. A myopia defocus video image display system based on axial chromatic aberration according to claim 14, characterized in that, Multiple peripheral defocused stimulation patterns are evenly distributed within the second region.

16. A myopia defocus video image display system based on axial chromatic aberration according to claim 15, characterized in that, The system further includes a third processing module, which applies a fourth layer onto the first layer; the second processing module mixes the first layer, the second layer, the third layer, and the fourth layer according to a predetermined overall brightness to present the first frame image; The predetermined overall brightness includes the overall brightness of the first frame image varying within the range of 200 nits to 300 nits.

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