Continuously-varying higher-order phase modulating ophthalmic lens and method of phase modulation

Abstract

The application discloses a spectacle lens of continuous high-order phase modulation and a phase modulation method thereof. The application mainly solves the problem that the micro-lens array and the micro-cylindrical lens array form a circular diffraction spot and a radial diffraction spot respectively in imaging, and meanwhile, a defocus surface is formed. The appearance of the defocus surface brings about the imaging ghost phenomenon in near use of the lens, and easily causes wearing discomfort, which is the disadvantage of the myopia prevention and control frame lens based on the array type micro-lens or micro-cylindrical lens structure. Different from the design scheme of the micro-lens array and the micro-cylindrical lens array, the application adopts a phase type device structure with high-order phase delay or high-order aberration generation effect to design a frame spectacle lens with potential myopia progression control effect, and the spectacle lens and the frame spectacle with the spectacle lens can ensure to provide full field of view vision correction in the dynamic field of view range of the eye. Meanwhile, through high-order phase modulation of an imaging wave surface, high-order aberration is used to actively inhibit the imaging information of high-frequency spatial frequency, so that a blurred image surface is generated in a peripheral field of view area, and the stimulation to the eye accommodation is weakened.

Description

Technical Field

[0001] This disclosure relates to the field of optometric products, and more particularly to an eyeglass lens that, while providing vision correction to the wearer, inhibits or delays the further development of refractive errors in the eye. Background Technology

[0002] Ordinary single-vision lenses have always been one of the most effective optical methods for correcting refractive errors in optometry clinics. The working principle of single-vision lenses is to focus an image of a point at infinity onto the far point of the eye. Eyes with refractive errors can see the image of an infinity point clearly when relaxed. However, with the development of modern society, the widespread use of digital devices, and the increasing integration of internet functionality into work, study, and daily life, coupled with unscientific and improper eye care, refractive errors are increasingly affecting younger people, leading to a rapid rise in the proportion of people with high myopia with age.

[0003] To address the rapidly increasing size and degree of myopia in the myopic population, technological innovation is needed in single-vision lenses to not only correct refractive errors but also, to some extent, slow down or control myopia progression. The earliest lenses of this type were peripheral defocus lenses with continuous power and progressive lenses for teenagers. However, the limited defocus or added power could not generate sufficient surface astigmatism or higher-order aberrations within a sufficiently large lens area, resulting in insignificant intervention in visual quality and thus weak myopia progression control in practical applications. Only recently, with the application of arrayed microlenses or microcylinders in lens design, have truly clinically significant myopia control frames been successfully developed. On the lens surface, microlenses are typically designed and distributed using a two-dimensional periodic array structure, as disclosed in Chinese Patent CN104678572A. Microcylinders are typically designed and distributed using a circular radial periodic array structure, as disclosed in Chinese Patent CN111103701A. Microlenses and microcylinders generate corresponding additional spherical and cylindrical refractive powers, respectively, in localized areas of the lens. From the perspective of the imaging wavefront, the localized defocus and astigmatism created by microlenses and microcylinders, respectively, are low-order phase retardations or low-order aberrations. In terms of imaging effects, microlens arrays and microcylinder arrays form circular and radial spots of confusion, respectively, both of which lead to a decrease in the image quality and blurring of the image plane, causing blurred vision, especially when viewing near objects. This can encourage the eyes to actively relax accommodation, thus helping to slow the progression of myopia. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this invention provides a continuous high-order phase modulation spectacle lens and its phase modulation method. It primarily addresses the problem that current microlens arrays and microcylinder arrays, while forming circular and radial spots of confusion respectively, also create defocus surfaces. (The presence of defocus surfaces causes ghosting in near vision, easily leading to discomfort; this is a deficiency in myopia control frames based on arrayed microlenses or microcylinders.)

[0005] The technical solution adopted in this invention is:

[0006] A continuous high-order phase modulation spectacle lens, the spectacle lens comprising:

[0007] A central optical zone, wherein the central optical zone is formed by a continuous, smooth base surface of the lens, and the center of the central optical zone coincides with the optical center of the lens; and

[0008] The phase modulation region surrounds the central optical region. The phase modulation region includes the base surface of the lens and phase retardation units attached to the base surface or integrated into the base layer of the lens. The phase retardation units are closely arranged and connected to form a sheet. Each phase retardation unit has a higher-order phase retardation effect, producing higher-order aberrations.

[0009] The phase delay unit is attached to the base surface of the lens in the form of a phase layer, which is attached to the front surface or the rear surface of the lens.

[0010] The phase delay unit is integrated in the middle of the lens substrate layer in the form of a phase layer.

[0011] The phase delay unit generates higher-order phase delays or higher-order aberrations with radial order of 3 or above.

[0012] The phase delay unit can produce a positive phase delay, and the phase delay amplitudes of all phase delay units are not equal.

[0013] The phase delay units are arranged in close proximity to each other.

[0014] The thickness between adjacent phase delay units is smoothly transitioned.

[0015] The phase delay unit is a regular polygon in shape.

[0016] The diameter of the circumcircle of the polygon is in the range of 0.5 mm to 4.0 mm.

[0017] The phase delay unit, which operates effectively within the pupil area, affects the energy distribution of image points on the image plane by forming diffuse spots with starbursts.

[0018] The central optical region has a circular working aperture with a radius ranging from 2.5 mm to 6 mm.

[0019] The outer edge of the phase modulation region is polygonal or circular, with the optical center of the spectacle lens as the origin, and the radius of the outer edge is greater than 15 mm.

[0020] The phase delay unit and the lens substrate are either integrally formed or separately formed and then combined.

[0021] A phase modulation method for a continuous high-order phase modulation spectacle lens as described above, characterized by comprising the following steps:

[0022] Step 1: Represent the thickness distribution of the phase delay unit using Zernike polynomials:

[0023]

[0024] in, These are the coefficients of a polynomial, with units of length, and superscript. m An integer representing the azimuth order, and subscript n A non-negative integer representing the radial order, and its range is... ;

[0025] Step 2: Using phase delay units as components, a dense array structure is formed by splicing and combining them.

[0026] Step 3: Superimpose the dense array structure of phase delay units onto the base surface of the lens or integrate it into the base layer of the lens, ensuring that the center normal direction of each phase delay unit is the same as the surface normal direction of the lens base.

[0027] Step 4: When the imaging wavefront incident from the object side of the lens passes through the phase modulation region of the lens, each phase delay unit divides the incident wavefront into sub-apertures. The phase delay unit will generate a localized higher-order phase delay for its respective sub-wavefront.

[0028] Step 5: All the sub-wavefronts with applied higher-order phase delays are fused into a single outgoing wavefront after passing through the lens. The outgoing wavefront contains higher-order aberration components, which form a non-uniform minimum blur spot with starburst when propagating to the image plane of the spectacle lens. The blur spot can affect the image quality of the spectacle lens, forming a blurred image plane, and thus affecting the visual quality and contrast sensitivity of the eye wearing glasses.

[0029] The beneficial effects of this invention are as follows: This invention uses a phase-type device structure with high-order phase delay or high-order aberration generation to design a spectacle lens with potential myopia progression control function. The spectacle lens designed in this disclosure and the spectacle lens with the spectacle lens can ensure full visual field correction within the dynamic field of vision of the eye. At the same time, by high-order phase modulation of the imaging wavefront, high-frequency spatial frequency imaging information is actively suppressed in the form of high-order aberrations, thereby producing a blurred image plane in the peripheral visual field and reducing the stimulation to the eye's diopter accommodation. Attached Figure Description

[0030] To better understand the above and other objects, features, advantages, and functions of this disclosure, reference can be made to the preferred embodiments shown in the accompanying drawings. Like reference numerals in the drawings refer to like parts. Those skilled in the art should understand that the drawings are intended to schematically illustrate preferred embodiments of this disclosure and are not intended to limit the scope of this disclosure; the parts in the drawings are not drawn to scale.

[0031] Figure 1 This is a front structural diagram of an eyeglass lens according to a preferred embodiment of the present disclosure.

[0032] Figure 2 yes Figure 1 The thickness distribution diagram of the phase delay unit of the eyeglass lens.

[0033] Figure 3 yes Figure 1 A schematic diagram of the front structure of the phase delay unit of the eyeglass lens.

[0034] Figure 4 yes Figure 1 The image plane of the eyeglass lens has a diffused spot with star-like rays.

[0035] Figure 5 This is a front view of the eyeglass lens according to a preferred embodiment of the present disclosure, Example 2.

[0036] Figure 6 yes Figure 5 The thickness distribution diagram of the phase delay unit of the eyeglass lens.

[0037] Figure 7 yes Figure 5 A schematic diagram of the front structure of the phase delay unit of the eyeglass lens.

[0038] Figure 8 yes Figure 5 The image plane of the eyeglass lens has a diffused spot with star-like rays.

[0039] in:

[0040] Eyeglass lens 1.

[0041] Central optical zone 10.

[0042] Outer optical region 11.

[0043] Phase modulation region 20.

[0044] Phase delay unit 3.

[0045] 4. The outer circle of the phase delay unit. Detailed Implementation

[0046] The invention will be further described below with reference to the accompanying drawings: As shown in the figures, a continuous high-order phase modulation spectacle lens and its phase modulation method are disclosed, wherein the spectacle lens comprises:

[0047] The central optical zone is formed by a continuous, smooth base surface of the lens, and its center coincides with the optical center of the lens. Preferably, the refractive index of the lens within this zone is uniform and stable, and the refractive power of the lens in the central optical zone meets the requirements of the eye's prescription.

[0048] The phase modulation region surrounds the central optical region. The phase modulation region includes the base surface of the lens and phase retardation units attached to the base surface or integrated into the base layer of the lens. The phase retardation units are closely arranged and connected to each other. Each phase retardation unit has a higher-order phase retardation effect, producing higher-order aberrations. The phase retardation unit has no effect on the basic refractive power of the lens.

[0049] The phase delay unit is attached to the base surface of the lens in the form of a phase layer. The phase delay generated by the phase delay unit is equal to the phase layer thickness distribution multiplied by the difference in refractive index between the phase layer material and air. The phase layer is attached to the front surface or the rear surface of the lens.

[0050] The phase delay unit is integrated in the middle of the lens substrate in the form of a phase layer. The resulting phase delay is equal to the phase layer thickness distribution multiplied by the difference in refractive index between the phase layer material and the lens material.

[0051] The phase delay unit generates higher-order phase delays or higher-order aberrations with radial order of 3 or above.

[0052] The phase delay units can generate a positive phase delay, and the phase delay amplitudes of all phase delay units are not equal. The phase delay units are arranged in close proximity to each other.

[0053] The thickness between adjacent phase delay units is smoothly transitioned, and there is no abrupt change between adjacent phase delay units, forming an overall continuous high-order phase modulation effect.

[0054] The phase delay unit is a regular polygon, but it can also be an irregular polygon.

[0055] The diameter of the circumcircle of the polygon is in the range of 0.5 mm to 4.0 mm.

[0056] The phase delay unit, which operates effectively within the pupil area, affects the energy distribution of image points on the image plane by forming diffuse spots with starbursts.

[0057] The central optical region has a circular working aperture with a radius ranging from 2.5 mm to 6 mm.

[0058] The outer edge of the phase modulation region is polygonal or circular, with the optical center of the spectacle lens as the origin, and the radius of the outer edge is greater than 15 mm.

[0059] The phase delay unit and the lens substrate are either integrally formed or separately formed and then combined.

[0060] A phase modulation method for a continuous high-order phase modulation spectacle lens as described above, characterized by comprising the following steps:

[0061] Step 1: Represent the thickness distribution of the phase delay unit using Zernike polynomials:

[0062]

[0063] in, These are the coefficients of the polynomial, with units of length, and the superscript m indicates the integer order of the azimuth. The subscript n represents a non-negative integer representing the radial order, and its value ranges from [value range missing]. ;

[0064] Step 2: Using phase delay units as components, a dense array structure that can be periodic or non-periodic is formed by splicing and combining them.

[0065] Step 3: Superimpose the dense array structure of phase delay units onto the base surface of the lens or integrate it into the base layer of the lens, ensuring that the center normal direction of each phase delay unit is the same as the surface normal direction of the lens base.

[0066] Step 4: When the imaging wavefront incident from the object side of the lens passes through the phase modulation region of the lens, each phase delay unit divides the incident wavefront into sub-apertures. The phase delay unit will generate a localized higher-order phase delay for its respective sub-wavefront.

[0067] All the sub-wavefronts subjected to the higher-order phase delay merge into a single outgoing wavefront after passing through the lens. The outgoing wavefront contains higher-order aberration components, which form a non-uniform minimum blur spot with starburst when propagating to the image plane of the spectacle lens. The blur spot can affect the image quality of the spectacle lens, forming a blurred image plane, and thus affecting the visual quality and contrast sensitivity of the eye wearing glasses.

[0068] In this disclosure, spectacle lens 1 is a lens suitable for patients with refractive errors to wear in front of their eyes. Figure 1 and Figure 5 A front view of the lens 1 is shown. In this embodiment, the lens 1 has a circular aperture profile; alternatively, the lens 1 may also have an outer edge profile with a polygonal or other irregular shape.

[0069] See Figure 1 and Figure 5 The spectacle lens 1 includes an optical zone and a phase modulation zone 20, etc. The optical zone provides refractive power consistent with the patient's prescribed power to correct refractive errors. The optical zone of the spectacle lens 1 is optionally made of a material with a refractive index of 1.5 to 1.76 suitable for use as a spectacle lens. The phase modulation zone 20 provides refractive power consistent with the patient's prescribed power, while also providing additional higher-order phase retardation or higher-order aberrations to form an energy-divergent imaging blur spot, giving the wearer of the spectacle lens 1 a blurred peripheral visual perception.

[0070] The optical region includes a central optical region 10 and an outer peripheral optical region 12 located in the lens 1. The optical region forms the base surface of the lens 1, which is smooth and continuous. The base surface can be a rotationally symmetric spherical or aspherical surface, or a non-rotationally symmetric cylindrical or freeform surface.

[0071] The central optical zone 11 has a basically circular working aperture with a radius ranging from 2.5 mm to 6 mm.

[0072] exist Figure 1 and Figure 5 In this embodiment, the outer optical region 12 is located between the outer edge of the phase modulation region 20 and the outer edge of the spectacle lens 1. Thus, the spectacle lens 1 has three components in sequence from the center to the edge: the central optical region 10, the phase modulation region 20, and the outer optical region 12.

[0073] The phase modulation region 20 is basically circular in shape. In addition, the outer edge of the phase modulation region 20 can also be basically square, hexagonal or other polygonal.

[0074] In this disclosure, "substantially polygonal" means that, at a macroscopic level, the outer edge of a region or component, as discernible by a person skilled in the art, is a regular polygon. For a substantially polygonal region or component, its edge is not necessarily a straight line segment or border; the edge or border can actually be a straight line segment, a wavy line segment, or other form of broken line, etc. Based on the fact that a person skilled in the art can discern the shape defined by the outer edge of a region or component, that region or component falls under the meaning of "substantially polygonal."

[0075] Phase modulation region 20 contains, for example Figure 2 or Figure 6 The diagram shows multiple phase delay units 3 that fit together.

[0076] exist Figure 1 In a specific embodiment, for each phase delay unit 3 located at a non-edge position in the phase modulation region 20, six adjacent phase delay units 3 are distributed around it. Each phase delay unit 3 has the same hexagonal outer edge. Each phase delay unit 3 has the same higher-order phase profile, producing the same higher-order aberrations. See also... Figure 3 Each phase delay unit 3 is spliced ​​together using the edges of a regular hexagon.

[0077] exist Figure 5 In a specific embodiment, for each phase delay unit 3 located at a non-edge position in the phase modulation region 20, four adjacent phase delay units 3 are distributed around it. Each phase delay unit 3 has the same outer edge of a regular quadrilateral. Each phase delay unit 3 has the same higher-order phase profile, producing the same higher-order aberrations. See also... Figure 7 Each phase delay unit 3 is spliced ​​together using the edges of a regular quadrilateral.

[0078] Combination Figure 1 and Figure 5 The phase delay unit 3 that fits together means that the surface height of the phase delay units 3 at the splicing point is consistent, forming a continuous curved surface transition.

[0079] exist Figure 1 and Figure 5 In a specific embodiment, the phase retardation unit 3 is attached to the base surface of the lens in the form of a phase layer. The thickness distribution of the phase layer multiplied by the difference in refractive index between the phase layer and air determines the higher-order phase retardation distribution. For example, in Figure 2 and Figure 6 In the equation, the thickness distribution of the phase layer is represented by a Zernike polynomial, where, Figure 2 The thickness of the phase layer is , Figure 6 The thickness of the phase layer is Furthermore, the thickness distribution of the phase layer can also be represented by a combination of multiple Zernike polynomials. If the refractive index of the phase layer material is... n p The corresponding higher-order phase delay is Preferably, the phase retardation unit 3 only generates higher-order phase retardations or higher-order aberrations with radial order of 3 or above, and does not include lower-order phase retardations or lower-order aberrations such as defocus or astigmatism.

[0080] exist Figure 1-8 In this embodiment, the thickness of the phase delay unit 3 is positive, and the height of the phase layer exceeds the base surface of the lens, resulting in a positive phase delay. Alternatively, the thickness of the phase delay unit 3 can be negative; in this case, the height of the phase layer will be lower than the base surface of the lens, and the phase delay unit 3 will generate a negative phase delay.

[0081] With the above-designed spectacle lens 1, when the imaging wavefront passes through the phase modulation region 20, the wavefront will be divided into sub-wavefronts according to the distribution of each phase delay unit 3. The higher-order phase delay generated by the phase delay unit 3 introduces higher-order aberrations into the sub-wavefronts. All sub-wavefronts transfer energy and superimpose it onto the imaging surface corresponding to the lens base surface. These sub-wavefronts will not form confocal points, nor will they form divergent points located in front of or behind the image plane. Instead, they will only form non-uniform energy diffusion spots on the image plane, which degrades the image quality and causes blurring of the image plane.

[0082] Because the phase delay units 3 within the phase modulation region 20 are arranged in a close-fitting manner, the fill rate of the phase delay units 3 in the phase modulation region 20 reaches 100%, thus maintaining the continuity of the overall surface morphology of the phase modulation region 20. In this case, the higher-order phase delays or higher-order aberrations generated by the phase delay units 3 are distributed throughout the phase modulation region 20, ensuring that a blurred image can be seen regardless of where the eye is turned to in the phase modulation region 20, while still allowing for basic object recognition. The phase delay units 3 only generate higher-order phase delays and higher-order aberrations, without generating lower-order phase delays and lower-order aberrations, thus avoiding ghosting phenomena such as double images or multiple defocused images.

[0083] Provided that the surrounding blurred image plane is provided, the higher-order phase delay amplitudes between each phase delay unit 3 can be set to be the same or different, and the higher-order aberration effects generated by each phase delay unit 3 can be consistent or inconsistent.

[0084] The normal direction at the center of phase retardation unit 3 is essentially the same as the normal direction of the base surface at that location. Although the wavelet surfaces of phase retardation unit 3 do not form a common focal point, the central rays of the wavelet surfaces corresponding to each phase retardation unit 3 are focused on the imaging point of the base surface, ensuring that the energy of the wavelet surfaces is superimposed at that image point, causing the energy at the image point to diffuse and form a blur spot, thus achieving the desired blurred imaging effect. See also Figure 4 and Figure 8 It resembles a point energy diffuse spot with radiating star-like rays.

[0085] exist Figure 1-8 In this embodiment, the phase delay unit 3 is disposed on the object-facing surface of the lens 1, and the outer edge of the phase delay unit 3 is substantially non-coplanar with the base surface of the lens 1. The phase delay unit 3 only generates higher-order phase delay, ensuring that there is no significant difference in height between the phase delay unit 3 and the base surface of the lens 1, and the thickness of the lens 1 remains relatively stable.

[0086] For phase delay elements 3 with the same regular polygonal grid distribution, each phase delay element 3 is tightly surrounded by adjacent phase delay elements 3. For example, in Figure 1-4 In the hexagonal grid distribution structure, each phase delay unit 3 is surrounded by 6 phase delay units 3; Figure 5-8 In the quadrilateral grid distribution structure, each phase delay unit 3 is surrounded by 4 phase delay units 3.

[0087] In the embodiments of this disclosure, the phase delay unit 3 is configured to have the same higher-order phase surface shape. These designs enable the sub-wavefronts generated by the phase delay unit 3 to have consistent higher-order phase delay or higher-order aberration phenomena, which results in the formation of a diffuse spot with a certain size and non-uniform energy dispersion on the image plane after the higher-order phase modulation.

[0088] Despite the above explanation and appendix Figure 1-8 Only the phase delay units 3 shown are shown as the outer edges of regular hexagons and regular quadrilaterals. Based on the inventive concept of this disclosure, the outer edges of the phase delay units 3 can also be set as equilateral triangles or other irregular polygons. These types of phase delay units 3 can all ensure that the phase modulation region 20 is formed in a closely arranged manner on the base surface of the lens 1.

[0089] For phase delay unit 3 of this disclosure, see [link to relevant documentation]. Figure 3 and Figure 7 Its outer edge, which is a regular polygon, has a circumscribed circle 4, and its diameter is set in the range of 1.0 mm to 4.0 mm. This size range is generally smaller than the diameter of the pupil, which can ensure that multiple phase delay units 3 can simultaneously play a higher-order phase delay role within the pupil range.

[0090] Within the pupil diameter range, if the number of phase delay units 3 is large, the higher-order phase delay amplitude of the phase delay units 3 can be set to a smaller value; conversely, if the number of phase delay units 3 is small, the higher-order phase delay amplitude of the phase delay units 3 can be set to a larger value. Under both of these different settings, the spectacle lens 1 can achieve the image plane blurring effect.

[0091] Preferably, each phase delay unit 3 is configured to generate only higher-order phase delays, i.e., to generate corresponding higher-order aberrations, without generating lower-order phase delays and their corresponding lower-order aberrations such as defocus and astigmatism. This is also to ensure that the phase delay unit 3 does not change the basic refractive power of the lens 1, ensuring that the wearer's eyes can still obtain the visual acuity to distinguish objects when viewing through the phase modulation area 20.

[0092] Preferably, the optical region and the phase modulation region 20 of the spectacle lens are integrally formed. In this embodiment, the phase modulation region 20 is located on the surface of the base curved surface of the spectacle lens 1, and the relative position between the optical region and the phase modulation region 20 is precisely controlled during the forming process. In fact, this is only a preferred embodiment; the phase modulation region 20 can also be formed in the middle of the base layer of the spectacle lens 1, and the relative position between the optical region and the phase modulation region 20 can be precisely controlled during the forming process.

[0093] Of course, the integrally formed optical region and phase modulation region 20 are not necessarily true; for example, in Figure 1 and Figure 5 In the embodiment shown, the phase modulation region 20 can be formed separately and then fixed to the base surface of the lens 1 by adhesive bonding.

[0094] The scope of protection of this disclosure is defined only by the claims. Thanks to the teachings of this disclosure, those skilled in the art will readily recognize that alternative structures to the structures disclosed herein can be used as feasible alternative implementations, and that the implementations disclosed herein can be combined to produce new implementations, which also fall within the scope of the appended claims.

Claims

1. A type of spectacle lens with continuous high-order phase modulation, characterized in that: The spectacle lens includes: A central optical zone, wherein the central optical zone is formed by a continuous, smooth base surface of the lens, and the center of the central optical zone coincides with the optical center of the lens; and The phase modulation region surrounds the central optical region. The phase modulation region includes the base surface of the lens and phase retardation units attached to the base surface or integrated into the base layer of the lens. The phase retardation units are closely arranged and connected to each other. Each phase retardation unit only produces higher-order phase retardation and higher-order aberrations. The higher-order phase retardation or higher-order aberrations produced by the phase retardation units are distributed throughout the phase modulation region.

2. The spectacle lens with continuous high-order phase modulation according to claim 1, characterized in that: The phase delay unit is attached to the base surface of the lens in the form of a phase layer, which is attached to the front surface or the rear surface of the lens.

3. The spectacle lens with continuous high-order phase modulation according to claim 1, characterized in that: The phase delay unit is integrated in the middle of the lens substrate layer in the form of a phase layer.

4. A spectacle lens with continuous high-order phase modulation according to any one of claims 1-3, characterized in that: The phase delay unit generates higher-order phase delays or higher-order aberrations with radial order of 3 or above.

5. A spectacle lens with continuous high-order phase modulation according to any one of claims 1-3, characterized in that: The phase delay unit can produce a positive phase delay, and the phase delay amplitudes of all phase delay units are not equal.

6. The spectacle lens with continuous high-order phase modulation according to claim 1, characterized in that: The thickness between adjacent phase delay units is smoothly transitioned.

7. The spectacle lens with continuous high-order phase modulation according to claim 1, characterized in that: The phase delay unit is a regular polygon in shape.

8. The spectacle lens with continuous high-order phase modulation according to claim 7, characterized in that: The diameter of the circumcircle of the regular polygon is in the range of 0.5 mm to 4.0 mm.

9. A spectacle lens with continuous high-order phase modulation according to claim 8, characterized in that: The phase delay unit, which operates effectively within the pupil area, affects the energy distribution of image points on the image plane by forming diffuse spots with starbursts.

10. A spectacle lens with continuous high-order phase modulation according to claim 1, characterized in that: The central optical region has a circular working aperture with a radius ranging from 2.5 mm to 6 mm.

11. A spectacle lens with continuous high-order phase modulation according to claim 1, characterized in that: The outer edge of the phase modulation region is polygonal or circular, with the optical center of the spectacle lens as the origin, and the radius of the outer edge is greater than 15 mm.

12. The spectacle lens with continuous high-order phase modulation according to claim 1, characterized in that: The phase delay unit and the lens substrate are either integrally formed or separately formed and then combined.

13. A spectacle lens with continuous high-order phase modulation according to claim 1, characterized in that... The thickness distribution of the phase delay unit is represented by a Zernike polynomial: in, These are the coefficients of the polynomial, with units of length, and the superscript m indicates the integer order of the azimuth. The subscript n represents a non-negative integer representing the radial order, and its value ranges from [value range missing]. .

14. A phase modulation method for a spectacle lens with continuous high-order phase modulation as described in any one of claims 1-13, characterized in that: Includes the following steps: Step 1: Represent the thickness distribution of the phase delay unit using Zernike polynomials: in, These are the coefficients of the polynomial, with units of length, and the superscript m indicates the integer order of the azimuth. The subscript n represents a non-negative integer representing the radial order, and its value ranges from [value range missing]. ; Step 2: Using phase delay units as components, a dense array structure is formed by splicing and combining them. Step 3: Superimpose the dense array structure of phase delay units onto the base surface of the lens or integrate it into the base layer of the lens, ensuring that the center normal direction of each phase delay unit is the same as the surface normal direction of the lens base. Step 4: When the imaging wavefront incident from the object side of the lens passes through the phase modulation region of the lens, each phase delay unit performs sub-aperture segmentation on the incident wavefront, and the phase delay unit applies a localized higher-order phase delay to its respective sub-wavefront. Step 5: All the sub-wavefronts with applied higher-order phase delays are fused into a single outgoing wavefront after passing through the lens. The outgoing wavefront contains higher-order aberration components, which form a non-uniform minimum blur spot with starburst when propagating to the image plane of the spectacle lens. The blur spot can affect the image quality of the spectacle lens, forming a blurred image plane, and thus affecting the visual quality and contrast sensitivity of the eye wearing glasses.

Images