An image display method and system based on axial chromatic aberration

Abstract

The present disclosure belongs to the field of display, and particularly relates to an image display method and system based on axial chromatic aberration. The method comprises: obtaining attribute values of each primary color in a color unit, each primary color comprising at least a first primary color with a wavelength greater than that of a second primary color by 50 nm or more; in a first time period, increasing the attribute value of the first primary color according to a time-varying proportion to a first predetermined value, and maintaining the first predetermined value in a second time period; wherein the increasing of the attribute value of the first primary color according to the time-varying proportion comprises: obtaining white field attribute values of each primary color according to the illumination intensity of each primary color of a white field region, multiplying the white field attribute values of each primary color by a time-varying coefficient corresponding thereto to obtain a ratio of each primary color, and determining the time-varying proportion according to the ratio of each primary color, wherein the time-varying coefficient of the first primary color is positively correlated with time. A myopic defocus is formed to inhibit the elongation of the observer's eye axis.

Description

Technical Field

[0001] This disclosure pertains to the field of display technology, and more specifically relates to an image display method and system based on axial chromatic aberration. Background Technology

[0002] Myopia is a social problem. Studies have shown that myopia defocus can effectively inhibit axial elongation and may even shorten the axial length. Myopia defocus (also known as positive defocus) refers to the phenomenon where, when the human eye focuses on an image plane that is clearly imaged on the retina (the principal image plane), if another image plane or part of the principal image plane can be simultaneously imaged in front of the retina through optical means, positive defocus stimulation is formed in optometry. Chromatic aberration (LCA) refers to the different refractive indices of different colors of light due to their different wavelengths in the same medium. Consequently, different colors of light will focus at different focal points. Under appropriate induction, myopia defocus stimulation can occur. That is, when the focal point of longer wavelength light falls on the retina, the focal point of shorter wavelength light will fall in front of the retina. The combined effect of these two factors can create myopia defocus. 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 an image display method and system based on axial chromatic aberration to suppress the elongation of the observer's eye axis.

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

[0005] A method for image display based on axial color difference is provided, comprising: acquiring attribute values ​​of each primary color in a color unit, wherein each primary color includes at least a first primary color and a second primary color, wherein the wavelength of the first primary color is greater than the wavelength of the second primary color by more than 50 nm; increasing the attribute value of the first primary color according to a time-varying ratio to reach a first predetermined value during a first time period, and maintaining the first predetermined value during a second time period; wherein increasing the attribute value of the first primary color according to a time-varying ratio includes: acquiring the white field attribute value of each primary color based on the illumination intensity of each primary color in the white field region; multiplying the white field attribute value of each primary color by a corresponding time-varying coefficient to obtain the ratio of each primary color; determining the time-varying ratio based on the ratio of each primary color; wherein the time-varying coefficient of the first primary color is positively correlated with time to form an axial defocus stimulus.

[0006] The attribute values ​​of each primary color are adjusted according to the proportion that changes over time, so that the focal point of the light formed by the first primary color falls on the observer's retina, while the focal point of the light formed by the second primary color falls in front of the observer's retina, forming axial chromatic aberration. This works together to produce axial myopic defocus, which in turn causes the retina to tend to move forward, thus effectively inhibiting the elongation of the eye axis. The proportion of the first primary color light increases over time, so that the focal point of the first primary color light moves towards the retina over time, allowing the observer to gradually adapt and, to a certain extent, prevent the observer from losing interest in observation, thereby prolonging the observation time. In the second time period, the focal point of the first primary color light falls on the retina, and the attribute value no longer changes. The myopic defocus stimulation reaches its maximum at this time, and maintaining this stimulation inhibits the elongation of the eye axis and may even reduce the degree of myopia.

[0007] Preferably, the attribute values ​​of each primary color in the color unit are obtained, wherein each primary color includes at least a first primary color and a second primary color, wherein the wavelength of the first primary color is more than 50 nm larger than the wavelength of the second primary color; during a first time period, the attribute value of the first primary color is increased according to a time-varying ratio to reach a first predetermined value, and the attribute value of the second primary color is decreased, while the first predetermined value is maintained during a second time period; wherein increasing the attribute value of the first primary color according to a time-varying ratio includes obtaining the white field attribute value of each primary color based on the illumination intensity of each primary color in the white field region, multiplying the white field attribute value of each primary color by a corresponding time-varying coefficient to obtain the ratio of each primary color, determining the time-varying ratio based on the ratio of each primary color, wherein the time-varying coefficient of the first primary color is positively correlated with time, forming an axial defocus stimulus.

[0008] The attribute values ​​of each primary color are adjusted according to the proportion that changes over time, so that the focal point of the light formed by the first primary color falls on the observer's retina, while the focal point of the light formed by the second primary color falls in front of the observer's retina. The two work together to produce axial myopic defocus, which in turn causes the retina to tend to move forward, thus effectively inhibiting the elongation of the eye axis. The proportion of the first primary color light increases over time, so that the focal point of the first primary color light moves towards the retina over time, allowing the observer to gradually adapt and thus preventing the observer from losing interest in observation, thereby prolonging the observation time. In the second time period, the focal point of the first primary color light falls on the retina. At this time, the attribute values ​​no longer change, and the myopic defocus stimulation reaches its maximum. Maintaining this stimulation inhibits the elongation of the eye axis and may even reduce the degree of myopia.

[0009] Preferably, the wavelength of the first primary color is 625nm to 740nm, the wavelength of the second primary color is 492 to 455nm, and the wavelength of the third primary color is 577nm to 492nm.

[0010] Most displays use the RGB color mechanism to control the displayed colors, limiting the wavelengths of each primary color to a certain range, making it convenient to adjust the colors of the display through the RGB color mechanism.

[0011] Preferably, the ratio of the first primary color increases linearly with time; the ratio of the second primary color decreases linearly with time.

[0012] Setting the ratios of each primary color to vary evenly aims to move the focal position of each primary color uniformly, giving the observer time to adapt and accept the color change. Only by ensuring a good viewing experience can the observer be encouraged to look for a longer period of time, thereby achieving a better effect of inhibiting axial elongation or even shortening the axial length.

[0013] Preferably, each of the primary colors also includes a third primary color, the ratio of which decreases linearly over time.

[0014] Preferably, the rate of increase of the ratio of the first primary color is equal to the rate of decrease of the ratio of the second primary color plus the rate of decrease of the ratio of the third primary color.

[0015] This setting ensures that the brightness of the displayed image remains relatively constant, allowing users to view it more effectively.

[0016] Preferably, the ratio of the first primary color increases to the white field attribute value of the first primary color during the first time period.

[0017] This setting increases the proportion of the first primary color, thereby increasing its share among all primary colors. This causes the focal point of red light in the eye to continuously move closer to the retina, while the focal points formed by other primary colors after entering the eye continuously move in front of the retina. When the proportion of the first primary color reaches the white field attribute value of the first primary color, the focal point of the first primary color light falls on the retina. This can stimulate the eye to produce myopia defocus and inhibit axial elongation.

[0018] Preferably, adjusting the light intensity of each primary color includes, Where R′ is the ratio of the first primary color at time T, R is the white point attribute value of the first primary color, G′ is the ratio of the second primary color at time T, G is the white point attribute value of the third primary color, B′ is the ratio of the second primary color at time T, B is the white point attribute value of the second primary color, a is the first coefficient, b is the second coefficient, c is the third coefficient, d is the fourth coefficient, and T is any time within the first time interval. max This is the value at the end of the first time period.

[0019] The proportion of each primary color and how that proportion changes over time are determined using the methods described above.

[0020] Preferably, the ratio includes R′:G′:B′; the plurality of color units form an image; the first color value is represented as (r ij g ij b ij ), where r ij g is the attribute value of the first primary color of the pixel in the i-th row and j-th column of the image. ij b is the attribute value of the third primary color of the pixel in the i-th row and j-th column of the image. ij Let (r) be the attribute value of the second primary color of the pixel in the i-th row and j-th column of the image; the second color value corresponding to the first color value is represented as (r) ij ', g ij ',b ij '), where r ij 'g' represents the attribute value of the first primary color of the pixel in the i-th row and j-th column of the adjusted image. ij 'B' represents the attribute value of the third primary color of the pixel in the i-th row and j-th column of the adjusted image. ij 'r' represents the attribute value of the second primary color of the pixel in the i-th row and j-th column of the adjusted image. ij '=r ij ,

[0021] By altering the final color unit display result in the above manner, the proportion of red light in the displayed image is increased, so that the focus of red light can fall on the retina when it enters the eye. At this time, the focus of other primary colors will fall in front of the retina, thereby forming myopic defocus to inhibit axial elongation.

[0022] A1. An image display system based on axial chromatic aberration, characterized in that it comprises:

[0023] A display used to show color units;

[0024] The data acquisition module acquires the attribute values ​​of each primary color in the color unit. Each primary color includes at least a first primary color and a second primary color, wherein the wavelength of the first primary color is more than 50 nm larger than the wavelength of the second primary color.

[0025] The ratio acquisition module obtains the white field attribute value of each primary color based on the illumination intensity of each primary color in the white field area, multiplies the white field attribute value of each primary color by the corresponding coefficient that changes with time to obtain the ratio of each primary color, and determines the ratio that changes with time based on the ratio of each primary color, wherein the coefficient of the first primary color that changes with time is positively correlated with time.

[0026] The adjustment module, based on the ratio obtained by the ratio acquisition module, adjusts the first color value to increase it to a first predetermined value during a first time period; and maintains the first predetermined value during a second time period to form an axial defocus stimulation.

[0027] A2. An image display system based on axial chromatic aberration, characterized in that it comprises:

[0028] A display used to show color units;

[0029] The data acquisition module acquires the attribute values ​​of each primary color in the color unit. Each primary color includes at least a first primary color and a second primary color, wherein the wavelength of the first primary color is more than 50 nm larger than the wavelength of the second primary color.

[0030] The ratio acquisition module obtains the white field attribute value of each primary color based on the illumination intensity of each primary color in the white field area, multiplies the white field attribute value of each primary color by the corresponding coefficient that changes over time to obtain the ratio of each primary color, and determines the ratio that changes over time based on the ratio of each primary color, wherein the coefficient that changes over time of the first primary color is positively correlated with time to form axial defocus stimulation.

[0031] The adjustment module, based on the ratio obtained by the ratio acquisition module, adjusts the first color value to increase to a first predetermined value during a first time period and decreases the attribute value of the second primary color; and maintains the first predetermined value during a second time period.

[0032] A3. An image display system based on axial color difference according to A1 or A2, characterized in that the wavelength of the first primary color is 625nm to 740nm, the wavelength of the second primary color is 492 to 455nm, and the wavelength of the third primary color is 577nm to 492nm.

[0033] A4. An image display system based on axial chromatic difference as described in A3, characterized in that,

[0034] The ratio of the first primary color increases linearly with time;

[0035] The ratio of the second primary color decreases linearly over time.

[0036] A5. An image display system based on axial color difference as described in A4, characterized in that each primary color further includes a third primary color, and the ratio of the third primary color decreases linearly with time.

[0037] A6. An image display system based on axial color difference according to A5, characterized in that the rate of increase of the ratio of the first primary color is equal to the rate of decrease of the ratio of the second primary color plus the rate of decrease of the ratio of the third primary color.

[0038] A7. An image display system based on axial color difference as described in A6, characterized in that, within a first time period, the ratio of the first primary color increases to the white point attribute value of the first primary color.

[0039] A8. An image display system based on axial color difference as described in A7, characterized in that adjusting the illumination intensity of each primary color includes, Where R′ is the ratio of the first primary color at time T, R is the white point attribute value of the first primary color, G′ is the ratio of the third primary color at time T, G is the white point attribute value of the third primary color, B′ is the ratio of the second primary color at time T, B is the white point attribute value of the second primary color, a is the first coefficient, b is the second coefficient, c is the third coefficient, d is the fourth coefficient, and T is any time within the first time interval. max This is the value at the end of the first time period.

[0040] A9. An image display system based on axial color difference according to A8, characterized in that the ratio includes R′:G′:B′;

[0041] Multiple color units form an image;

[0042] The first color value is represented as (r) ij g ij b ij ), where r ij g is the attribute value of the first primary color of the pixel in the i-th row and j-th column of the image. ij b is the attribute value of the third primary color of the pixel in the i-th row and j-th column of the image. ij The attribute value of the second primary color of the pixel in the i-th row and j-th column of the image;

[0043] The second color value corresponding to the first color value is represented as (r ij ', g ij ',b ij '), where r ij 'g' represents the attribute value of the first primary color of the pixel in the i-th row and j-th column of the adjusted image. ij 'B' represents the attribute value of the third primary color of the pixel in the i-th row and j-th column of the adjusted image. ij 'r' represents the attribute value of the second primary color of the pixel in the i-th row and j-th column of the adjusted image. ij '=r ij ,

[0044] Compared with the prior art, this disclosure adjusts the proportion of light emitted by a color to increase the proportion of the longest wavelength light in the primary color, so that the retina of the eye gradually focuses on the primary color, thereby causing the focal point of other primary colors with wavelengths smaller than the primary color, which originally fell in front of or on the retina, to move forward and away from the location of the retina, thereby producing myopic defocus and inhibiting axial elongation. Attached Figure Description

[0045] 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.

[0046] Figure 1 This is a schematic diagram of the multi-layer structure of an LCD screen;

[0047] Figure 2 This is a schematic diagram showing the arrangement of the light-emitting elements of an LED screen.

[0048] Figure 3 A schematic diagram showing the combination of individual pixels of the light-emitting element of an LED screen;

[0049] Figure 4 This is a schematic diagram of the RGB color space;

[0050] Figure 5 The positions of the focal points of red and blue light in the eye under natural conditions;

[0051] Figure 6 To increase the proportion of red light in the light entering the eye, the positions of the focal points of red light and blue light in the eye;

[0052] Figure 7 This is a flowchart of the steps of an image display method disclosed herein;

[0053] Figure 8 This is a schematic diagram of an image display system disclosed herein. Detailed Implementation

[0054] 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.

[0055] 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 implementation methods. It should be noted that these specific implementation methods do not constitute a limitation on the embodiments of this application.

[0056] Display devices, especially those based on additive color mixing, typically use miniature light-emitting elements as the basic unit for color display. A single pixel usually contains light-emitting elements of multiple colors, also known as primary colors. Various colors are displayed by superimposing primary colors of different intensities and types.

[0057] For example, such as Figure 1 As shown, in an exemplary display device using RGB as primary colors, each pixel on the screen is composed of three closely adjacent RGB (red, green, blue) sub-pixels (light emitters) arranged neatly. Each sub-pixel is an individually controllable light-emitting unit. The sub-pixel itself does not carry color; instead, it emits white light that passes through the lower polarizer on the bottom layer of the display panel and the thin-film transistors on the lower polarizer. This white light then passes through the outermost RGB coating and is illuminated by the white light to display color. In this process, the three primary color sub-pixels control the amount of light entering the screen, achieving combinations of different brightness levels for the three primary colors. The light is then emitted through the upper polarizer on the top layer of the display panel. If the distance is sufficient, the human eye cannot distinguish the three different colored sub-pixels, thus creating a pixel of a specific color. This arrangement is mainly used in LCD screens. Its advantage is that each pixel can independently display the required color, resulting in good display accuracy and a natural image.

[0058] For example, such as Figure 2 and Figure 3 As shown, each pixel on the screen is composed of half a red light emitter, half a blue light emitter, and one green light emitter. By controlling the brightness of these emitters, a pixel of a specific color is formed. This arrangement is mainly used in LED screens. That is, in an LED display, each pixel typically includes at least one set of RGB LED beads—one red, one green, and one blue LED. Various colors are displayed by superimposing light emitted by these three types of beads at different intensities. In a display, the smaller the pixel size, the higher the screen resolution, and the clearer the display. These tiny LED beads are generally difficult for the naked eye to distinguish.

[0059] Different display devices have different light-emitting capabilities due to variations in the light-emitting elements or other structural differences in the monitor, resulting in different color display ranges, also known as color spaces. For example... Figure 4 As shown, in a color space, the brightest point is called the white point, corresponding to... Figure 2Point W in the diagram. At this point, taking an RGB three-color display device as an example, the brightness of the R, G, and B LEDs are all at their maximum values ​​within the set range, and the three primary colors of RGB are superimposed to form white based on the principle of color balance; this is called the white field. From this perspective, the white field area represents the luminous limit of the light-emitting element in the display device under set conditions.

[0060] Such display devices based on additive color mixing can be used on various carriers, including but not limited to televisions, computers, mobile phones, tablets, engineering monitors, projectors, VR glasses, AR glasses, etc.

[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 defocus has been shown to have a certain effect on inhibiting myopia. Its working principle is that when the human eye focuses on an image plane that can be clearly imaged on the retina, this is called the principal image plane. If, through optical means, another image plane is presented in front of the retina while the principal image plane is on the retina, the two image planes work together to form axial myopia defocus. This causes the eye to tend to see the image presented in front of the retina more clearly, leading to forward movement of the retina to inhibit axial elongation and may even reduce the degree of myopia.

[0063] Based on the above principles, this specific embodiment provides an image display method and an image display system.

[0064] Example 1

[0065] This embodiment provides an image display method based on axial chromatic aberration, such as... Figure 7 As shown.

[0066] The image display method based on axial chromatic difference includes:

[0067] Obtain the attribute values ​​of each primary color in the color unit, wherein each primary color includes at least a first primary color and a second primary color, and the wavelength of the first primary color is more than 50 nm larger than the wavelength of the second primary color.

[0068] The color unit is a basic element in an image display system. Taking an LED display as an example, the color unit can be a pixel of the LED display. Depending on the type of display system, the basic element can also be in other forms. For example, in a progressive scan display device, the basic element can be a row. Since there are many types of display devices, this specific embodiment will not list them all in detail. For ease of explanation and understanding, this embodiment uses an LED display as an example to explain the inventive concept of this disclosure.

[0069] In an LED display, a typical pixel may include three light-emitting elements: red, green, and blue. By controlling the amount of light emitted by these three elements, different colors are achieved using additive color mixing. The image displayed on the display is composed of multiple pixels, which are combined to form the display image. When a pixel changes, the displayed image changes accordingly. The attribute values ​​of each primary color include, but are not limited to, the light intensity of the light-emitting element, the current flowing through the light-emitting element, or the voltage applied across the light-emitting element.

[0070] In this embodiment, although the three primary colors of red, green and blue are used as examples for illustration, those skilled in the art will understand that the primary colors are not limited to red, green and blue, but may include the primary colors based on the additive color mixing method.

[0071] Preferably, the wavelength of the first primary color is within the range of 625nm to 740nm, the wavelength of the second primary color is within the range of 492nm to 455nm, and the wavelength of the third primary color is within the range of 577nm to 492nm. That is, the first primary color is red, the second primary color is blue, and the third primary color is green. Based on the above red, green, and blue three primary colors, i.e., the RGB three primary colors, most colors can be mixed and superimposed to form, providing a wide color display space.

[0072] Different colors of light have different wavelengths and different refractive indices in the same medium, causing different colors of light to focus at different locations when they enter the eye. When more than one color of light enters the eye, the image formed by the longest wavelength light will fall behind, and the image formed by the shortest wavelength light will fall in front. The two colors of light form different focal points on the axis, creating axial chromatic aberration, which causes defocusing of the retinal image.

[0073] Therefore, in this embodiment, each primary color includes at least a first primary color and a second primary color, where the wavelength of the first primary color is at least 50 mm longer than the wavelength of the second primary color. This arrangement ensures that the images formed by the first primary color and the second primary color fall at different positions in the eye. When the light of the first primary color and the light of the second primary color enter the eye, if the longer wavelength light falls on the retina, then the shorter wavelength light will fall in front of the retina, thus providing the necessary conditions for myopia defocus.

[0074] In its natural state, such as Figure 5 As shown, for the three primary colors of light, the wavelength of red light is longer than that of the other two primary colors. When red light and one of the other two primary colors enter the human eye at the same time, 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.

[0075] 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.

[0076] Therefore, by adjusting the proportions of each primary color in the incoming light, the proportion of red light in the incoming light is maximized, causing the focal point of red light in the eye to continuously move closer to the retina. Figure 6 As shown, the focal point formed by other primary colors of light entering the eye continuously moves in front of the retina, which can stimulate the eye to produce myopic defocus and inhibit the elongation of the eye axis.

[0077] The image displayed on the screen is either static or dynamic. When the image is dynamic, the screen is constantly changing. Based on this change, the screen ensures that red light accounts for a larger proportion of the light entering the eye, which serves as the basis for myopia defocus.

[0078] In this specific embodiment, the proportions of each primary color can be obtained as follows: The attribute values ​​of each primary color in the white field region are obtained based on the illumination intensity of each primary color in the white field region; these are the white field attribute values. The white field attribute values ​​of each primary color are multiplied by their corresponding time-varying coefficients to obtain the proportions of each primary color. The time-varying proportions are then determined based on these proportions.

[0079] The white area is the brightest region in the image, as referenced. Figure 2 The white field is formed by the interaction of multiple primary colors. The goal is to obtain the light intensity of each primary color that forms the white field, that is, to obtain the maximum light intensity of each primary color under the settings of this display device.

[0080] The white field attribute values ​​are various parameter values ​​characterizing the light intensity of each primary color in the white field region, including the current flowing through the light emitter or the voltage applied across the light emitter, etc. Adjusting the proportion of red light based on white balance has a more obvious display effect than adjusting the proportion of red light based on other factors, such as adjusting the proportion of red light on a display screen that is bluish. This makes it easier for the observer to perceive changes in red light and to adjust the overall intensity of red light to be greater than that of other lights.

[0081] Using the white point attribute value as a reference condition and introducing a time parameter, we obtain the proportion that changes over time. If this proportion can enhance red light while weakening other primary colors with shorter wavelengths, based on the color balance point, then adjusting this proportion will increase the red light stimulation received by the human eye.

[0082] Enhancing red light based on the color balance point can be achieved in several ways, such as by increasing the proportion of red light alone, by decreasing the proportion of blue and green light alone, or by increasing the proportion of red light while decreasing the proportion of blue and green light.

[0083] Preferably, in this embodiment, this is achieved by simultaneously changing the proportions of the three primary colors. The proportions of each primary color change over time, including an increase in the proportion of the first primary color and a decrease in the proportions of the second and third primary colors. As the proportion of the first primary color increases, the eye gradually tends to focus clearly on the light of the first primary color. That is, the focal point of the light of the first primary color entering the eye gradually moves from behind the retina towards the retina. This means that the axial length of the eye gradually shortens. Therefore, the focal points of the second and third primary colors also move further forward, gradually moving from the retina to in front of the retina or to a position farther in front of the retina than before. Until the longer wavelength light is on the retina and the shorter wavelength light is in front of the retina, myopic defocus gradually occurs, thus inhibiting axial elongation. Increasing the proportion of the first primary color while decreasing the proportions of other primary colors can significantly and effectively increase the proportion of the first primary color light in the light entering the eye, which is conducive to achieving the conditions for myopic defocus.

[0084] Furthermore, the ratio of the first primary color increases linearly over time, the ratio of the second primary color decreases linearly over time, and the ratio of the third primary color decreases linearly over time. Setting the ratios of each primary color to change uniformly aims to shift the focal position of each primary color evenly, providing the observer with adaptation time to accept the color change. Only by ensuring a good viewing experience can the observer be encouraged to view for a longer period of time, thereby achieving a better effect of inhibiting axial elongation or even shortening the axial length.

[0085] Furthermore, the rate of increase of the ratio of the first primary color is greater than the rate of decrease of the ratio of the second primary color, and the rate of increase of the ratio of the first primary color is greater than the rate of decrease of the ratio of the third primary color. Further, the rate of increase of the ratio of the first primary color is equal to the sum of the rates of decrease of the ratio of the second primary color and the rate of decrease of the ratio of the third primary color. This setting ensures that the brightness of the displayed image remains essentially constant, allowing for better viewing by the user.

[0086] Specifically, the preferred ratios of the primary colors in this embodiment can be expressed as follows:

[0087]

[0088] Where R′ is the ratio of the first primary color at time T, R is the white point attribute value of the first primary color, G′ is the ratio of the third primary color at time T, G is the white point attribute value of the third primary color, B′ is the ratio of the second primary color at time T, B is the white point attribute value of the second primary color, a is the first coefficient, b is the second coefficient, c is the third coefficient, d is the fourth coefficient, and T is any time within the first time interval. max This is the value at the end of the first time period.

[0089] The ratio R′:G′:B′ over time is determined based on the ratios of each primary color.

[0090] Preferably, a = 70%, so as to provide a 30% increase in the ratio of the first primary color over time, and to ensure that the overall image is within a relatively harmonious and acceptable range for the observer.

[0091] More preferably, in a specific example of this embodiment, the ratios are expressed as follows:

[0092]

[0093] That is, at 60 minutes, the ratio of the first primary color reaches the white point attribute value R of the first primary color, which is the maximum value. After 60 minutes, the ratio B′:G′:R′ becomes a fixed ratio and no longer changes, maintaining the ratio at this moment.

[0094] During the first time period, the attribute value of the first primary color is increased according to the ratio that changes over time to reach a first predetermined value. Specifically, during the first time period, the ratio of the first primary color increases with time until it reaches the white point attribute value of the first primary color. At this point, the ratio of the first primary color increases to its maximum achievable value, corresponding to the first predetermined value of the attribute value of the first primary color.

[0095] The luminous intensity of the three light-emitting elements of a pixel displayed on the monitor forms a first color value to characterize the pixel. This first color value is represented as (r ij g ij b ij ), where r ij g is the attribute value of the first primary color of the pixel in the i-th row and j-th column of the first image. ij b is the attribute value of the third primary color of the pixel in the i-th row and j-th column of the first image. ijTo represent the attribute value of the second primary color of the pixel in the i-th row and j-th column of the image, the first color value is redistributed according to the stated ratio to obtain the second color value, denoted as (r ij ', g ij ',b ij '), where r ij ' is the attribute value of the first primary color of the pixel in the i-th row and j-th column of the second image, g ij ' is the attribute value of the third primary color of the pixel in the i-th row and j-th column of the second image, B ij ' is the attribute value of the second primary color of the pixel in the i-th row and j-th column of the second image. The relationship between the first color value and the second color value is: r ij '=r ij ,

[0096] The first predetermined value is maintained during the second time period, which is after the first time period. That is, when the attribute value of the first primary color reaches the first predetermined value, the image will no longer change. At this time, the focus of the light of the first primary color falls on the retina, and the focus of the light of other primary colors falls in front of the retina. The light of multiple primary colors works together to form axial myopic defocus, so as to inhibit the elongation of the eye axis.

[0097] Example 2

[0098] This embodiment provides an image display system based on axial chromatic aberration, such as... Figure 8 As shown.

[0099] The image display system based on axial color difference includes: a display screen, a data acquisition module, a ratio acquisition module, and an adjustment module.

[0100] A display screen is used to display color units. Multiple color units constitute the image displayed on the display screen.

[0101] The data acquisition module acquires the attribute values ​​of each primary color in the color unit. Each primary color includes at least a first primary color and a second primary color, wherein the wavelength of the first primary color is at least 50 nm longer than the wavelength of the second primary color. The attribute values ​​include the illuminance of each primary color, the current flowing through the light emitter of each primary color, the voltage applied to the light emitter of each primary color, and normalized values, such as parameters for the three primary colors ranging from 0 to 255. The explanation of the color unit, attribute values, and the technical effects of setting the first wavelength to be at least 50 nm longer than the second wavelength have been described in Embodiment 1 and will not be repeated here.

[0102] The ratio acquisition module obtains the white point attribute value of each primary color based on the illumination intensity of each primary color in the white point area. It then multiplies each primary color's white point attribute value by its corresponding time-varying coefficient to obtain the ratio of each primary color. Based on these ratios, it determines the time-varying ratio, where the time-varying coefficient of the first primary color is positively correlated with time. For the specific acquisition method and calculation process of the ratio acquisition module, please refer to the corresponding content in Example 1; it will not be repeated here.

[0103] The adjustment module, based on the ratio obtained by the ratio acquisition module, adjusts the first color value to increase it to a first predetermined value during a first time period, and decreases the attribute value of the second primary color; during a second time period, it maintains the first predetermined value. The specific adjustment method and process of the adjustment module are similar to those described in Embodiment 1, and will not be repeated here.

[0104] By adjusting the proportion of different primary color light sources in the image, the proportion of red light in the image is adjusted so that the proportion of red light, which has the longest wavelength among multiple primary colors, gradually increases and moves closer to the retina. During this process, other primary colors are located in front of the retina and move away from the retina, thereby producing myopic defocus and continuously increasing the stimulation of myopic defocus, so as to effectively inhibit the elongation of the eye axis and even slow down the degree of myopia.

[0105] 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 image display system based on axial chromatic aberration, characterized in that, include: A display used to show color units; The data acquisition module acquires the attribute values ​​of each primary color in the color unit. Each primary color includes at least a first primary color and a second primary color, wherein the wavelength of the first primary color is more than 50 nm larger than the wavelength of the second primary color; the wavelength of the first primary color is 625 nm to 740 nm, and the wavelength of the second primary color is 492 nm to 455 nm. The ratio acquisition module obtains the white field attribute value of each primary color based on the illumination intensity of each primary color in the white field area, multiplies the white field attribute value of each primary color by the corresponding coefficient that changes with time to obtain the ratio of each primary color, and determines the ratio that changes with time based on the ratio of each primary color, wherein the coefficient of the first primary color that changes with time is positively correlated with time to form axial defocus stimulation. The adjustment module, based on the ratio obtained by the ratio acquisition module, adjusts the ratio of the first primary color to increase to a first predetermined value within a first time period, wherein the ratio of the first primary color increases linearly with time; the ratio of the second primary color decreases linearly with time, and the attribute value of the second primary color decreases; and the ratio of the first primary color remains at the first predetermined value within a second time period.

2. The image display system based on axial chromatic aberration according to claim 1, characterized in that, Each of the primary colors also includes a third primary color, the ratio of which decreases linearly over time, and the wavelength of which is 577nm~492nm.

3. The image display system based on axial chromatic aberration according to claim 2, characterized in that, The rate at which the ratio of the first primary color increases is equal to the rate at which the ratio of the second primary color decreases plus the rate at which the ratio of the third primary color decreases.

4. The image display system based on axial chromatic aberration according to claim 3, characterized in that, During the first time period, the ratio of the first primary color increases to the white point attribute value of the first primary color.

5. The image display system based on axial chromatic aberration according to claim 4, characterized in that, Adjusting the light intensity of each primary color includes, ,in The ratio of the first primary color at time T. The white point attribute value of the first primary color. Let T be the ratio of the third primary color. The white point attribute value of the third primary color, where The ratio of the second primary color at time T. The white point attribute value of the second primary color. As the first coefficient, As the second coefficient, The third coefficient, The fourth coefficient is given, where T is any moment within the first time interval. This is the value at the end of the first time period.

6. The image display system based on axial chromatic aberration according to claim 5, characterized in that, The proportion includes ; Multiple color units form an image; The first color value is represented as ( r ij , g ij , b ij ),in r ij The attribute value of the first primary color of the pixel in the i-th row and j-th column of the image. g ij The attribute value of the third primary color for the pixel in the i-th row and j-th column of the image. b ij The attribute value of the second primary color of the pixel in the i-th row and j-th column of the image; The second color value corresponding to the first color value is represented as ( r ij ’ , g ij ’ , b ij ’ ),in r ij ’ The attribute value of the first primary color of the pixel in the i-th row and j-th column of the adjusted image. g ij ’ The attribute value of the third primary color of the pixel in the i-th row and j-th column of the adjusted image. B ij ’ The attribute value of the second primary color of the pixel in the i-th row and j-th column of the adjusted image. r ij ’ = r ij , g ij ’ = g ij , b ij ’ = b ij .

Images