Progressive lens and glasses

Abstract

The progressive lens comprises a lens body and a microstructure area arranged on the lens body, the microstructure area comprises a plurality of micro-scale optical structures, and each micro-scale optical structure can generate optical distortion signals with high frequency and low amplitude; the microstructure area at least covers the astigmatism area of the progressive lens, the frequency of the optical distortion signal is higher than that of an astigmatism signal of the astigmatism area, and the amplitude of the optical distortion signal is lower than that of the astigmatism signal. Wherein the lens body has low-frequency and large-scale distortion, so that strong optical flow disturbance is generated in dynamic vision, and the brain explains the distortion as environmental motion, and furthermore, a micro-structure area with high frequency and low amplitude is additionally arranged on the lens, so that a wearer has adaptability to high-frequency fine signals, and the high-frequency fine signals can be obtained. A regular optical flow generated by low-frequency distortion is covered or disrupted, so that the brain is difficult to perceive the overall slow distortion, and the discomfort caused by the surging effect is weakened.

Description

Technical Field

[0001] The present invention relates to the technical field of optics, in particular to a progressive lens and glasses. Background Art

[0002] Progressive addition lenses (PALs) provide both distance and near vision correction by providing a continuous transition in power from the upper distance vision zone to the lower near vision zone within the same lens. However, this gradual change in power inevitably introduces astigmatism and distortion at the lens periphery. When wearing a PAL, the wearer's eyes or head move, causing their vision to pass through different areas of the lens. This often causes the wearer to perceive a "shaking" or "distorted" sensation in the surrounding scenery, a phenomenon known as the "surge effect" (also known as the "swimming effect"). This dynamic distortion can lead to unstable vision and, in severe cases, dizziness or discomfort, a major cause of difficulty adapting to PALs for many first-time users.

[0003] To address this issue, PAL manufacturers typically minimize peripheral distortion through methods such as optimizing freeform surface design, enlarging the optical center area, and dividing multiple optical zones into smooth transitions. While these methods do mitigate the surge effect, the inherent conflict between gradual power change and a wide field of view makes mitigation less than ideal. When the wearer quickly turns their head or glances past the edge of the lens, residual low-frequency, large-scale distortion can still cause noticeable visual distortion. Summary of the Invention

[0004] The present invention provides a progressive lens and glasses to solve the problem of a surge effect occurring when a wearer wears progressive multifocal lenses in the related art, which causes discomfort to the wearer.

[0005] According to one aspect of the present invention, a progressive lens is provided, comprising: a lens body, and a microstructure area arranged on the lens body, the microstructure area comprising a plurality of microscale optical structures, each of the microscale optical structures being capable of generating an optical distortion signal with a high frequency and a low amplitude, the microstructure area at least covering an astigmatism area of ​​the progressive lens, the frequency of the optical distortion signal being higher than the frequency of the astigmatism signal of the astigmatism area, and the amplitude of the optical distortion signal being lower than the amplitude of the astigmatism signal.

[0006] Optionally, each of the micro-scale optical structures includes at least one of a micro-lens array, a micro-texture structure, a random micro-prism structure or a random speckle structure.

[0007] Optionally, when the micro-scale optical structure is a micro-lens array, the size of the micro-lenses in the micro-lens array is 0.1 mm-2 mm.

[0008] Optionally, the microlenses in the microlens array are arranged in a regular arrangement or a random arrangement;

[0009] When the microlenses in the microlens array are arranged regularly, the microlens array forms a compound eye structure or a honeycomb structure.

[0010] When the microlenses in the microlens array are arranged randomly, the microlenses in the microlens array are of random shape.

[0011] Optionally, when the micro-scale optical structure is a micro-texture structure, the micro-texture structure is of at least one of a wave shape, a stripe shape or a dot shape.

[0012] Optionally, the micro-structured region is further arranged in a parafoveal region of the progressive lens.

[0013] The structure density of the micro-structured region in the astigmatic region is greater than the structure density of the micro-structured region in the parafoveal region, and / or the perturbation amplitude of the micro-structured region in the astigmatic region is higher than the perturbation amplitude of the micro-structured region in the parafoveal region.

[0014] Optionally, the micro-structure in the parafoveal region is a regular micro-texture structure, and the micro-structure in the astigmatic region is a random microlens array.

[0015] Optionally, the amplitude of the optical distortion signal generated by each of the micro-scale optical structures in the micro-structured region is such that the local refractive power perturbation is controlled at a refractive power level of ±0.75D.

[0016] Optionally, the micro-structured region is further arranged in a distance vision region and a near vision region of the progressive lens.

[0017] The micro-structure density in the micro-structured region in the distance vision region is less than the micro-structure density in the micro-structured region in the near vision region; and / or the perturbation amplitude in the micro-structured region in the distance vision region is less than the perturbation amplitude in the micro-structured region in the near vision region.

[0018] The micro-structure density in the micro-structured region in the near vision region is less than the micro-structure density of the micro-structured region in the parafoveal region; and / or the perturbation amplitude in the micro-structured region in the near vision region is less than the perturbation amplitude of the micro-structured region in the parafoveal region.

[0019] According to another aspect of the present application, there is provided a pair of glasses comprising the progressive lens of any of the embodiments of the present application.

[0020] The technical scheme of the embodiment of the present application is that a microstructure region is arranged on the lens body, and the microstructure region comprises a plurality of microscale optical structures, each of which can generate an optical distortion signal with high frequency and low amplitude; the microstructure region at least covers the astigmatic region of the progressive lens. The frequency of the optical distortion signal is higher than that of the astigmatic signal of the astigmatic region, and the amplitude of the optical distortion signal is lower than that of the astigmatic signal. Since the lens body itself has low-frequency and large-scale distortion, strong optical flow disturbance is generated in dynamic vision, which causes the brain to interpret it as environmental movement. Furthermore, in the present application, the microstructure region with high frequency and low amplitude is added to the lens, so that the wearer adapts to the high-frequency fine signal to mask or disrupt the regular optical flow generated by the low-frequency distortion, making it difficult for the brain to detect the overall slow distortion, thereby weakening the discomfort caused by the surge effect.

[0021] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a structural schematic diagram of a progressive lens provided according to an embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of a progressive lens provided according to an embodiment of the present application;

[0025] Figure 3 is a structural schematic diagram of a progressive lens provided according to another embodiment of the present application;

[0026] Figure 4 is an astigmatic schematic diagram of a progressive lens provided in the related art. DETAILED DESCRIPTION

[0027] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] The root cause of the surge effect in related art lies in the fact that the luminous intensity distribution of PAL lenses must transition from near to far within a limited area, inevitably leading to peripheral prismatic effects and aberrations. This low-frequency, large-scale distortion creates a strong optic flow disturbance in dynamic vision, causing the brain to interpret it as environmental motion (i.e., creating the "swimming" illusion). Existing designs often focus on reducing the magnitude of this distortion, but it is difficult to simultaneously ensure a sufficiently wide field of view and a smooth luminous intensity transition. The present invention takes a different approach, leveraging the human eye's adaptability to high-frequency, subtle signals. By introducing some high-frequency, subtle distortion "noise" into the lens, it is possible to mask or disrupt the regular optic flow produced by the low-frequency distortion, making the overall, slow distortion less perceptible to the brain and thus reducing the discomfort caused by the surge effect.

[0030] Figure 1 Schematic diagram of the structure of the progressive lens provided according to an embodiment of the present invention. Figure 1 As shown, the progressive lens includes: a lens body 100, and a microstructure area A arranged on the lens body 100, the microstructure area A includes multiple microscale optical structures, each microscale optical structure can generate an optical distortion signal with high frequency and low amplitude; the microstructure area A at least covers the astigmatism area of ​​the progressive lens, the frequency of the optical distortion signal is higher than the frequency of the astigmatism signal in the astigmatism area, and the amplitude of the optical distortion signal is lower than the amplitude of the astigmatism signal.

[0031] Among them, reference Figure 1The lens body 100 includes a distance vision area 101, a passage area, and a near vision area 103, wherein the passage area is also referred to as a transition area between the distance vision area 101 and the near vision area 103. The passage area refers to a line connecting a far point of view to a near point of view, and this part is basically free of astigmatism. The two sides of the passage area, i.e., the passage side areas 102, are prone to astigmatism, and as the distance to the edge of the lens increases in a direction perpendicular to the passage, the astigmatism area 104 is more prone to be formed. When the wearer wants to look into the distance, the distance vision area 101 is used, and when the wearer wants to look at a near object, the near vision area 103 is used, so that the same lens can simultaneously achieve distance and near vision correction. However, when the wearer frequently switches between the distance vision area 101 and the near vision area 103 or shakes the head left and right, due to the change in lens power and the aberration generated by the astigmatism area 104, the wearer will feel that the peripheral scene appears to be shaking and will have a dizziness. The embodiment of the present application covers the dizziness by setting the micro-scale optical structure in the astigmatism area 104 and using a high-frequency low-amplitude optical distortion signal to cover the dizziness.

[0032] It can be understood that by modulating the density, shape, arrangement, size, etc. of the micro-scale optical structure, a high-frequency low-amplitude distortion signal can be obtained. When the microstructure area A covers the astigmatism area 104, the high-frequency low-amplitude optical distortion signal has a higher frequency and a lower amplitude than the astigmatism signal of the astigmatism area 104. In this way, the wearer is more likely to capture the high-frequency low-amplitude optical distortion signal formed by the micro-scale optical structure and is less likely to capture the astigmatism signal of the astigmatism area, so that the wearer ignores the astigmatism signal and reduces the surge effect.

[0033] In one embodiment, an optical simulation software can be used to set the frequency and amplitude of the astigmatism signal of the astigmatism area as a standard, and by modulating the density, shape, arrangement, size, etc. of the micro-scale optical structure, an optical distortion signal with a higher frequency and a lower amplitude than the astigmatism signal is obtained to form the required noise.

[0034] Therefore, the embodiment of the present application sets the micro-scale optical structure capable of generating a high-frequency low-amplitude value in the astigmatism area 104, so that the lens body 100 additionally generates a high-frequency small-amplitude optical distortion signal while maintaining the original power gradient function. These micro-distortion signals do not directly correct the surge effect itself and do not significantly affect the imaging clarity, but achieve the effect of "moving flowers and trees" through the visual masking principle. That is, the human eye is more sensitive to these subtle and rapid changes and can quickly adapt, so that such high-frequency information is preferentially filtered out during neural processing. At the same time, since the micro-distortion noise disrupts the originally smooth distortion light flow, the brain's attention to the underlying slow large-scale distortion is reduced, and the subjective perception of the overall surge effect by the wearer is also weakened. In short, the present scheme "deceives" the visual system by applying clever interference noise to make the residual distortion of the progressive lens less noticeable, thereby improving the wearing comfort.

[0035] Optionally, each micro-scale optical structure comprises at least one of a microlens array, a micro-texture structure, a random micro-prism structure, or a random speckle structure.

[0036] It can be understood that in the microstructure region A, only one of the microlens array, the micro-texture structure, the random micro-prism structure, or the random speckle structure can be provided, or a combination of any two of them, or a combination of any three of them, or a combination of all four of them. When only one of them is provided, it is easy to process in the astigmatic region 104 of the lens body 100. When a combination of two or more of them is provided, the micro-scale optical structure is more chaotic, and regular astigmatism is not easy to appear. In addition, different shapes can also be provided according to different regions of the lens body 100. For example, the micro-texture structure can be provided in the edge region of the astigmatic region 104, that is, in the part close to the edge of the distance region 101 or the near region 103, and the microlens array can be provided in the central region of the astigmatic region 104, so as to simultaneously generate anisotropic fine distortion signals, that is, regular astigmatism is not easy to appear.

[0037] The microlens array can be a microlens array, a microconvex lens array, or a convex-concave interval array, and can be randomly arranged or regularly arranged. When regularly arranged, the preparation process is simple and easy to implement. When randomly arranged, regular astigmatism is not easy to appear.

[0038] The micro-texture structure is a concave texture or a convex texture, and the shape is more elongated compared with the microlens. The micro-texture structure can also be randomly arranged or regularly arranged. Similarly, when regularly arranged, the preparation process is simple and easy to implement. When randomly arranged, regular astigmatism is not easy to appear.

[0039] The microlenses in the random microlens structure are randomly distributed. The speckles in the random speckle structure are randomly distributed. The random distribution here is "pseudo-random", which refers to a sequence or number with random characteristics generated by an algorithm, but is essentially deterministic and repeatable, not truly random (such as random numbers based on physical random sources). Pseudo-random numbers / sequences are generated by deterministic algorithms that appear to have statistical properties of random numbers (such as uniform distribution, independence, unpredictability), but actually have reproducibility and periodicity. Reproducibility is the generation of exactly the same sequence by the algorithm given the same initial value. Periodicity is that the sequence will repeat after a long enough period (ideally the period is very long, close to "true randomness"). Thus, the random microlens / speckle structure is to design the lens to be covered with pseudo-randomly distributed micro-lenses or refractive index fluctuations, similar to introducing random speckles inside or on the surface of the lens material. These microstructures can be formed by laser processing, optical 3D printing, etc. The size and shape are irregular but the statistical properties are controllable. This pseudo-random pattern uses the idea of dithering in digital signal processing, by adding designed random noise, it is difficult for the human eye to capture the regularity of the original distortion. The result is like dithering the color steps in a digital image, the obvious color band transition (corresponding to large-scale distortion) is covered by grain noise, and the visual effect becomes smoother.

[0040] Thus, the above microstructure preparation process is simple, and by modulating the density, shape, arrangement, size of the above microstructure, i.e. each micro-scale optical structure, a distortion signal with a frequency higher than the astigmatism signal and an amplitude lower than the astigmatism signal can be obtained, forming the required noise.

[0041] Optionally, the microlenses in the microlens array are arranged in one of a regular arrangement or a random arrangement; when the microlenses in the microlens array are regularly arranged, the microlens array forms a compound eye structure or a honeycomb structure; when the microlenses in the microlens array are randomly arranged, the microlenses in the microlens array are randomly shaped.

[0042] It should be noted that a microlens array is a structure with regularly or randomly arranged microlenses on a surface (typically the inner surface) of a lens. Optionally, when the microscale optical structure is a microlens array, the microlenses in the microlens array are 0.1 mm to 2 mm in size. That is, each microlens is on the order of 0.1 mm to 2 mm in size, with minimal local variation in refractive power. These microlenses are distributed across the lens like a set of small "compound eye" lenses, each of which slightly converges and diverges light passing through it, resulting in subtle fluctuations in local optical power. By designing the curvature and arrangement density of the microlenses, the intensity and spectral distribution of microdistortion can be controlled. Specifically, when the microlens curvature variation is small and the arrangement density is high, a high-frequency, low-amplitude distortion signal can be obtained. Furthermore, when the microlens array is a compound eye lens or a honeycomb lens, the astigmatism region 104 can be fully covered, eliminating blind spots. Random microlens shapes can be freely configured, such as quadrilaterals and hexagons.

[0043] Optionally, when the micro-scale optical structure is a micro-texture structure, the shape of the micro-texture structure is at least one of wavy, striped or scattered dots.

[0044] It should be noted that microtexture is a micro-texture etched or formed into the lens surface in the form of waves, stripes, or scattered dots. For example, fine undulating ripples can be carved horizontally, or a rough texture can be formed with randomly distributed small protrusions and depressions. When the line of sight moves across the lens body, the subtle changes in the optical path caused by these textures will be perceived by the wearer as slight jitter or flicker. Unlike the overall image distortion caused by large-scale distortion, microtexture causes subtle localized shaking. This shaking has a high frequency and low amplitude, similar to adding a "graininess" to the visual image, thereby masking the movement of the originally smooth distorted area and reducing the surge effect. Similarly, by designing the size and arrangement density of the microtexture structure, the intensity and spectral distribution of the microdistortion can be controlled. In other words, when the size variation of the microtexture structure is small and the arrangement density is high, a high-frequency, low-amplitude distortion signal can be obtained.

[0045] In one embodiment, because the microlens array and microtexture structure generally have specific shapes, they can be arranged regularly. In examples where they do not have specific shapes, they can also be arranged randomly. Specifically, the arrangement can be set based on the distortion signal requirements of the lens positions where the microstructure area is arranged.

[0046] Optionally, Figure 2 : is a schematic structural diagram of a progressive lens provided according to an embodiment of the present invention. Figure 2As shown, the microstructure region A is also arranged in the channel-side region 102 of the lens body 100; the structural density of the microstructure region in the astigmatism region 104 is greater than the structural density of the microstructure region in the channel-side region 102, and / or the disturbance amplitude of the microstructure region in the astigmatism region 104 is higher than the disturbance amplitude of the microstructure region in the channel-side region 102.

[0047] It is understood that the microstructure region A is not only located in the astigmatism region 104, but also in the para-channel region 102. This is because the microstructure region A is essential for the astigmatism region 104, and the astigmatism signal in the astigmatism region 104 is the strongest. Therefore, the microstructure region A can largely alleviate the surge effect caused by the astigmatism signal. However, the para-channel region 102 also produces a certain amount of astigmatism due to the transition between the distance zone 101 and the near zone 103. Therefore, the microstructure region A in the para-channel region 102 can further alleviate the surge effect caused by the astigmatism signal.

[0048] The structural density mentioned above refers to the number of microstructures per unit area or the period of the texture. A higher structural density indicates that more microstructures can be arranged per unit area. A higher density increases the frequency of the generated distortion signal, causing the distortion to change more rapidly, resulting in more disturbances per unit viewing angle. When the frequency of the generated distortion signal is high enough, the brain interprets it as background "texture" rather than object deformation. However, excessively high frequencies may affect image clarity. Therefore, a frequency band should be optimized based on the wearer's visual acuity and the lens power gradient, ensuring that microdistortions are frequent enough to blend into the visual background but not enough to reduce resolution.

[0049] The disturbance amplitude is the contrast, which is also the intensity of the micro-distortion signal or the maximum degree of light deflection. If the amplitude is too large, it will cause obvious blurring or double images when viewing objects. If the amplitude is too small, it will not have a masking effect.

[0050] Since the degree of astigmatism in the side-channel region 102 is generally lower than that in the astigmatism region 104, the structural density of the microstructure region in the astigmatism region 104 can be set to be greater than the structural density of the microstructure region in the side-channel region 102. In other words, the frequency of the optical distortion signal in the side-channel region 102 is lower than the frequency of the optical distortion signal in the astigmatism region 104.

[0051] Alternatively, the disturbance amplitude of the microstructure area in the astigmatism area 104 is set to be higher than the disturbance amplitude of the microstructure area in the channel-side area 102 , that is, the amplitude of the optical distortion signal in the channel-side area 102 is higher than the amplitude of the optical distortion signal in the astigmatism area 104 .

[0052] Or, the structure density of the microstructure region in the astigmatic region 104 is greater than the structure density of the microstructure region in the flanking region 102, and the perturbation amplitude of the microstructure region in the astigmatic region 104 is higher than the perturbation amplitude of the microstructure region in the flanking region 102.

[0053] And for the flanking region 102 itself, the frequency of the optical distortion signal in the flanking region 102 is higher than the frequency of the astigmatic signal in the flanking region 102, and the amplitude of the optical distortion signal in the flanking region 102 is lower than the amplitude of the astigmatic signal in the flanking region 102.

[0054] In this way, the density of the microscale optical structure arranged in the flanking region 102 can be smaller, thereby reducing the cost on the basis of meeting the requirements. In addition, the clarity of the flanking region 102 can also be avoided. Thus, in the region where the astigmatic signal is strong, the microstructure with large density and large perturbation amplitude can be distributed to shield the astigmatic signal as much as possible, and in the region where the astigmatic signal is weak, the microstructure with small density and small perturbation amplitude can be distributed to maintain the clarity and resolution of the field of view on the basis of shielding the astigmatic signal.

[0055] Optionally, the microstructure in the flanking region 102 is a regular microtexture structure, and the microstructure in the astigmatic region 104 is a random microlens array.

[0056] By introducing a high-density random microlens array in the main distortion region (the astigmatic region 104 below the periphery of the lens), and etching a regular fine texture in the flanking region 102, anisotropic fine distortion signals are generated at the same time. Regular optical distortion signals are avoided, and new aberrations are introduced.

[0057] Optionally, the amplitude of the optical distortion signal generated by each microscale optical structure in the microstructure region A is controlled to be in the order of ±0.75D of the local refractive power.

[0058] That is, when the perturbation amplitude exceeds the order of ±0.75D of the refractive power, the perturbation amplitude is too large, which can cause blur or ghosting when looking at objects. When the perturbation amplitude is too small, it cannot play a masking role. When the perturbation is controlled to be in the order of ±0.75D of the refractive power, the generated image shift is near the human visual threshold, and does not have a large impact on vision.

[0059] Optionally, Figure 3 is a structural schematic diagram of a progressive lens according to another embodiment of the present application. Figure 3 As shown in the figure, the microstructure region A is also arranged in the distance vision region 101 and the near vision region 103 of the progressive lens.

[0060] The microstructure density in the microstructure region in the distance zone 101 is smaller than the microstructure density in the microstructure region in the near zone 103; and / or the disturbance amplitude in the microstructure region in the distance zone 101 is smaller than the disturbance amplitude in the microstructure region in the near zone 103;

[0061] The microstructure density in the microstructure area in the near area 103 is smaller than the microstructure density in the microstructure area in the channel side area 102; and / or, the disturbance amplitude in the microstructure area in the near area 103 is smaller than the disturbance amplitude in the microstructure area in the channel side area 102.

[0062] It should be noted that, in one embodiment, for simplicity of manufacturing, the microstructures can be evenly distributed across the lens body 100. For example, the same microstructure (microlens array) can be applied uniformly. Alternatively, differentiated patterns can be employed based on differences between different regions of the lens body 100. For example, the lower periphery of a PAL lens typically exhibits the greatest astigmatism and prismatic effects. Microstructure density or amplitude can be increased in these areas, while microperturbations can be reduced in the intermediate transition zone and the upper primary visual field to avoid affecting clarity. Furthermore, customized patterns can be designed based on specific prescriptions—for example, adding a strip of microtexture to the commonly used reading angle path to specifically counteract the perceived dynamic distortion along that path.

[0063] In this embodiment, the degree of astigmatism in the distance vision zone 101 is smaller than that in the near vision zone 103, the degree of astigmatism in the near vision zone 103 is smaller than that in the para-channel region 102, and the degree of astigmatism in the para-channel region 102 is smaller than that in the astigmatism zone 104. Furthermore, different microstructure densities and perturbation amplitudes can be designed based on the different degrees of astigmatism in each region.

[0064] refer to Figure 4 , Figure 4 The direction of the arrow in represents the main curvature direction of the lens, and the length of the arrow represents the intensity of the astigmatism on the lens. Figure 4 The horizontal and vertical axes represent the size of the lens. It can be seen that the astigmatism intensity is the greatest in the astigmatism area 104, followed by the side channel area 102, the distance area 101, and the near area 103.

[0065] That is to say, the microstructure density in the microstructure area in the distance zone 101 is smaller than the microstructure density in the microstructure area in the near zone 103; or, the disturbance amplitude in the microstructure area in the distance zone 101 is smaller than the disturbance amplitude in the microstructure area in the near zone 103; or, the microstructure density in the microstructure area in the distance zone 101 is smaller than the microstructure density in the microstructure area in the near zone 103; and the disturbance amplitude in the microstructure area in the distance zone 101 is smaller than the disturbance amplitude in the microstructure area in the near zone 103.

[0066] The microstructure density in the microstructure region in the near-use region 103 is less than the microstructure density of the microstructure region in the flanking region 102, or the perturbation amplitude in the microstructure region in the near-use region 103 is less than the perturbation amplitude of the microstructure region in the flanking region 102, or the microstructure density in the microstructure region in the far-use region 101 is less than the microstructure density in the microstructure region in the near-use region 103, and the perturbation amplitude in the microstructure region in the far-use region 101 is less than the perturbation amplitude in the microstructure region in the near-use region 103.

[0067] Wherein, when the microstructure densities are set to be different, the perturbation amplitudes can be set to be the same, or when the perturbation amplitudes are set to be different, the microstructure densities can be set to be the same.

[0068] Further, the frequency of the optical distortion signal formed by the far-use region 101 is less than the frequency of the optical distortion signal formed by the near-use region 103, the amplitude of the optical distortion signal formed by the far-use region 101 is less than the amplitude of the optical distortion signal formed by the near-use region 103, and the frequency of the optical distortion signal formed by the far-use region 101 is greater than the frequency of the self-astigmatism signal and the amplitude is lower than the amplitude of the self-astigmatism signal.

[0069] The frequency of the optical distortion signal formed by the near-use region 103 is less than the frequency of the optical distortion signal formed by the flanking region 102, the amplitude of the optical distortion signal formed by the near-use region 103 is less than the amplitude of the optical distortion signal formed by the flanking region 102, and the frequency of the optical distortion signal formed by the near-use region 103 is greater than the frequency of the self-astigmatism signal and the amplitude is lower than the amplitude of the self-astigmatism signal.

[0070] Thus, in the embodiment of the present application, based on the human factor principle, that is, the adaptation speed of the visual system to high-frequency noise is much faster than the adaptation to low-frequency distortion. Further, in the lens with micro-distortion noise, the wearer may notice the existence of fine "texture" or slight shaking in the field of view at the initial stage, but the brain will filter it out in a short time and regard it as part of the environment. This is similar to when people wear glasses with slight scratches or dust, they may initially see the tiny defects on the glass, but soon they can "see through" them and focus their attention on the distant target. Similarly, once the high-frequency micro-distortion is adapted, it has little effect on the clarity and normal vision.

[0071] More importantly, the low-frequency, large-scale distortion (the primary cause of the surge effect) no longer appears smoothly and continuously in the visual input after the addition of micro-noise. Normally, when the wearer moves their head or eyes, the optical flow of the retinal image is systematically shifted due to the overall distortion of the lens, causing the brain to perceive a "shaking scene." However, this shift is now broken down into numerous fragmented variations by the superimposed high-frequency noise. The brain's motion perception mechanism is more likely to capture consistent, overall movement, while ignoring chaotic, rapid jitters. Therefore, under the interference of micro-distortion noise, the wearer's brain struggles to integrate these fragmented signals into meaningful motion. In other words, the perception of the surge effect is significantly blunted.

[0072] In the long term, once wearers become accustomed to the micro-distortion noise itself, they will experience a more stable field of view through the lenses. Many new PAL users typically need days or even weeks to adapt to the surge effect, but lenses designed with this invention are expected to shorten this adaptation period. Subjective user feedback will tend to be more like "a slight texture around the lens periphery, but a stable field of view without any shakiness." This demonstrates that the micro-distortion noise successfully allows the brain to focus on important visual information (such as the shape and position of the target object) while ignoring unpleasant background distortion.

[0073] It is understandable that in addition to the technology of manufacturing micro lenses, laser processing can also be used to engrave textures on the surface or inside of the lens to produce micro distortion.

[0074] In addition to the lens manufacturing method, a transparent film with slight distortion can also be manufactured by embossing. The film can be temporarily fixed on the PAL surface. When the wearer gradually adapts to the PAL, it can be removed by himself to improve the image quality.

[0075] According to another aspect of the present invention, a pair of glasses is provided, comprising the progressive lens according to any one of the embodiments of the present invention.

[0076] The present invention, through the above solution, provides glasses that have the effects of the aforementioned lens body, that is, without significantly changing the progressive lens, achieves the technical effect of reducing the perception of the surge effect. Specifically,

[0077] Improved dynamic visual field stability: Wearing PAL lenses with superimposed micro-distortion noise significantly reduces the sense of instability in the surrounding scenery during dynamic scenes such as walking, turning the head, and climbing stairs. The wearer experiences a more stable field of vision and is less likely to experience the illusion of dizziness. This will improve the safety and comfort of daily activities.

[0078] Improved wearing comfort and adaptability: Because the surge effect is masked, new wearers are less likely to experience resistance to progressive lenses. Previously, some users who were particularly sensitive to the surge effect may have difficulty adapting to PAL lenses, but this solution is expected to minimize such intolerance rates. Overall, users will adapt more easily and develop stable visual habits more quickly.

[0079] Compatible with existing designs and easy to implement: This micro-distortion noise reduction solution can be integrated into any existing freeform PAL design. Manufacturing requires only an additional microstructuring step (such as mold etching or laser direct writing) to the traditional lens processing flow, with limited cost impact. Furthermore, the design of the lens' primary refractive area remains unchanged, maintaining key parameters like near and far lens clarity and channel length. In other words, this invention provides a low-cost, high-yield improvement approach widely applicable to upgrading existing PAL product lines.

[0080] Innovative Application of Visual Illusions: From an academic perspective, this solution applies the principle of dithering to eyewear optical design, representing a cross-disciplinary innovation between optical engineering and visual science. It does not directly alter optical imaging quality, but rather subtly alters the way the human eye perceives distortion, thus opening up new avenues for optimizing progressive lenses.

[0081] In summary, by introducing ingeniously designed micro-distortion noise, the present invention can significantly improve the dynamic visual comfort when wearing progressive multifocal lenses without sacrificing the basic optical performance of the lenses, fully demonstrating the innovativeness and practical value of the present invention.

[0082] The technical solution of the embodiment of the present invention is to provide a microstructure region on the lens body, and the microstructure region includes multiple microscale optical structures, each of which is capable of generating a high-frequency and low-amplitude optical distortion signal; the microstructure region at least covers the astigmatism region of the progressive lens. The frequency of the optical distortion signal is higher than the frequency of the astigmatism signal in the astigmatism region, and the amplitude of the optical distortion signal is lower than the amplitude of the astigmatism signal. In particular, due to the low-frequency, large-scale distortion in the lens body itself, strong optical flow disturbances are generated in dynamic vision, causing the brain to interpret them as environmental motion. Furthermore, by adding a high-frequency, low-amplitude microstructure region to the lens, the wearer is made to adapt to the high-frequency subtle signal, thereby masking or disrupting the regular optical flow generated by the low-frequency distortion, making it difficult for the brain to perceive the overall slow distortion, thereby reducing the discomfort caused by the surge effect.

[0083] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0084] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A progressive lens, characterized in that: include: A lens body, and a microstructure region disposed on the lens body, wherein the microstructure region includes a plurality of microscale optical structures, each of the microscale optical structures being capable of generating an optical distortion signal having a high frequency and a low amplitude; The microstructure area at least covers the astigmatism area of ​​the progressive lens, the frequency of the optical distortion signal is higher than the frequency of the astigmatism signal of the astigmatism area, and the amplitude of the optical distortion signal is lower than the amplitude of the astigmatism signal.

2. The progressive lens according to claim 1, wherein: Each of the micro-scale optical structures includes at least one of a micro-lens array, a micro-texture structure, a random micro-prism structure or a random speckle structure.

3. The progressive lens according to claim 1, wherein: When the micro-scale optical structure is a micro-lens array, the size of the micro-lenses in the micro-lens array is 0.1 mm-2 mm.

4. The progressive lens according to claim 3, wherein: The arrangement of the microlenses in the microlens array is one of regular arrangement and random arrangement; When the microlenses in the microlens array are regularly arranged, the microlens array forms a compound eye structure or a honeycomb structure; When the microlenses in the microlens array are randomly arranged, the microlenses in the microlens array are in random shapes.

5. The progressive lens according to claim 1, wherein: When the micro-scale optical structure is a micro-texture structure, the shape of the micro-texture structure is at least one of wavy, striped or scattered dots.

6. The progressive lens according to claim 1, wherein: The microstructure area is also arranged in the channel-side area of ​​the progressive lens; The structural density of the microstructure region in the astigmatism region is greater than that of the microstructure region in the channel-side region, and / or the disturbance amplitude of the microstructure region in the astigmatism region is greater than that of the microstructure region in the channel-side region.

7. The progressive lens according to claim 6, wherein: The microstructure in the channel-side region is a regular microtexture structure, and the microstructure in the astigmatism region is a random microlens array.

8. The progressive lens according to claim 1, wherein: The amplitude of the optical distortion signal generated by each of the microscale optical structures in the microstructure area enables the local diopter disturbance to be controlled at a diopter level of ±0.75D.

9. The progressive lens according to claim 6, wherein: The microstructure area is also arranged in the distance area and the near area of ​​the progressive lens; The microstructure density in the microstructure region in the distance vision area is smaller than the microstructure density in the microstructure region in the near vision area; and / or the disturbance amplitude in the microstructure region in the distance vision area is smaller than the disturbance amplitude in the microstructure region in the near vision area; The microstructure density in the microstructure area in the near area is smaller than the microstructure density in the microstructure area in the channel side area; and / or the disturbance amplitude in the microstructure area in the near area is smaller than the disturbance amplitude in the microstructure area in the channel side area.

10. A pair of glasses, characterized in that: The method comprises the progressive lens according to any one of claims 1 to 9.

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