CN117148598A - Continuous high-order phase modulation spectacle lens and phase modulation method thereof - Google Patents
Continuous high-order phase modulation spectacle lens and phase modulation method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000004075 alteration Effects 0.000 claims abstract description 28
- 238000003384 imaging method Methods 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims description 37
- 241000284156 Clerodendrum quadriloculare Species 0.000 claims description 9
- 230000001934 delay Effects 0.000 claims description 6
- 210000001747 pupil Anatomy 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 230000004438 eyesight Effects 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 230000004515 progressive myopia Effects 0.000 abstract description 4
- 230000003313 weakening effect Effects 0.000 abstract description 2
- 208000014733 refractive error Diseases 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000004379 myopia Effects 0.000 description 5
- 208000001491 myopia Diseases 0.000 description 5
- 208000029091 Refraction disease Diseases 0.000 description 4
- 230000004430 ametropia Effects 0.000 description 4
- 201000009310 astigmatism Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000004402 high myopia Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000005043 peripheral vision Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/022—Ophthalmic lenses having special refractive features achieved by special materials or material structures
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/021—Lenses; Lens systems ; Methods of designing lenses with pattern for identification or with cosmetic or therapeutic effects
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/024—Methods of designing ophthalmic lenses
- G02C7/027—Methods of designing ophthalmic lenses considering wearer's parameters
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- Ophthalmology & Optometry (AREA)
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Abstract
An ophthalmic lens with continuous high-order phase modulation and a phase modulation method thereof. Mainly solves the problem that the prior micro lens array and micro cylindrical lens array respectively form circular disperse spots and radial disperse spots in imaging and simultaneously form a scattered focal plane. Unlike microlens array and microprism array designs, which use a phase device structure with a high-order phase delay or a high-order aberration generation to design a frame lens with a potential myopia progression control effect, the lens and the frame lens with the lens of the present disclosure can ensure full-view vision correction in the dynamic field of view of the eye, and actively suppress imaging information of high frequency spatial frequency in the form of high-order aberration by high-order phase modulation of the imaging wavefront, thereby generating a blurred image plane in the peripheral field of view, and weakening the stimulus for eye vision adjustment.
Description
Technical Field
The present disclosure relates to the field of vision products, and more particularly to an ophthalmic lens that inhibits or delays further progression of a refractive error condition of the eye while providing vision correction to the wearer.
Background
The conventional single-vision ophthalmic lens fitting has been one of the most effective optical means for correcting refractive errors of the eye clinically with vision. The working principle of the single-light spectacle lens is that an infinite object point is imaged at a far point of an eye, and the eye with ametropia can see the image of the infinite object point in a relaxed state. With the development of modern society, the popularization and application of digital terminal products, the continuous expansion and penetration of network functions in work, study and life, the problems of unscientific and irregular eyes, and the like, lead to the gradual trend of the decrease of the age of patients suffering from ametropia, and lead to the rapid increase of the proportion of patients with high myopia along with the increase of the age.
In order to cope with the adverse situation of the rapid increase of the scale of the myopia group and the degree of myopia, technical innovation is needed to be carried out on the single-light spectacle lens, so that the single-light spectacle lens can also play a role in delaying or controlling the progress of myopia to a certain extent while correcting ametropia. The earliest glasses lens is a peripheral defocusing lens with continuous addition power and a teenager progressive lens, but limited defocusing amount or addition power cannot generate enough surface astigmatism or higher-order aberration in a large enough lens area, and the intervention on the visual quality of human eyes is not obvious, so that a weak myopia progression control effect is shown in practical application. Until recently, array type microlenses or micropillars were applied to the face design of ophthalmic lenses, and myopia control frame lenses that truly had significant clinical significance were not developed successfully. On the surface of the ophthalmic lens, the design distribution of the microlenses generally adopts a two-dimensional periodic array structure, as disclosed in chinese patent CN104678572 a. The design distribution of the micro-cylindrical lenses generally adopts a circular ring type radial periodic array structure, for example, as disclosed in Chinese patent CN 111103701A. The microlenses and the micropillars produce respective add sphere power and add cylinder power at the optic portions. From the imaging wavefront point of view, it is understood that the local defocus and local astigmatism formed by the microlens and the microprism, respectively, both belong to low-order phase retardation or low-order aberrations. On the imaging effect, the micro lens array and the micro cylindrical lens array respectively form circular diffuse spots and radial diffuse spots, which can lead to the reduction of the imaging quality of the spectacle lens and the blurring of an image surface, and the eye can feel unclear, especially when looking near, the eye can actively relax and regulate, thereby playing a role in delaying the progression of myopia.
Disclosure of Invention
In order to overcome the defects of the background technology, the invention provides a continuous high-order phase modulation spectacle lens and a phase modulation method thereof, which mainly solve the problem that a micro lens array and a micro cylindrical lens array form a circular disperse spot and a radial disperse spot respectively and simultaneously form a scattered focal plane. (the occurrence of defocused surface causes imaging ghosting phenomenon during near use of the lens, and wearing discomfort is easily caused, which is the defect of myopia prevention and control frame lens based on array type micro lenses or micro-cylindrical lenses.)
The technical scheme adopted by the invention is as follows:
a continuous high order phase modulated ophthalmic lens, the ophthalmic lens comprising:
a central optical zone consisting of a continuous smooth base curve of the ophthalmic lens, the center of the central optical zone coinciding with the optical center position of the lens; and
and a phase modulation region surrounding the central optical region, the phase modulation region including a base curve of the ophthalmic lens and phase delay units attached to the base curve or integrated in the ophthalmic lens base layer, the phase delay units being closely arranged to each other, connected to a patch, each phase delay unit having a high-order phase delay effect, generating a high-order aberration.
The phase delay unit is attached to the base curve of the spectacle lens in the form of a phase layer attached to the front surface of the spectacle lens or to the rear surface of the spectacle lens.
The phase delay unit is integrated in the middle of the spectacle lens substrate layer in the form of a phase layer.
The phase delay unit generates higher-order phase delay or higher-order aberration with radial orders of 3 order and above.
The phase delay units may produce positive phase delays and the phase delay amplitudes of all the phase delay units are not equal.
The phase delay units are closely connected with each other.
The thickness between adjacent phase delay units is in smooth transition.
The appearance of the phase delay unit is regular polygon.
The diameter of the circumcircle of the polygon is in the range of 0.5-mm to 4.0-mm.
The phase delay element, which works effectively in the pupil region, has the effect of forming a diffuse patch with starburst on the image point energy distribution on the image plane.
The central optical zone has a circular working aperture with a radius in the range of 2.5 mm to 6 mm.
The outer edge of the phase modulation area is polygonal or circular, the optical center of the spectacle lens is taken as the origin, and the radius of the outer edge is larger than 15 mm.
The phase delay unit and the spectacle lens base are integrally formed or formed in a split mode and then combined to form the spectacle lens.
A phase modulation method of the continuous high-order phase modulated spectacle lens, which is characterized in that: the method comprises the following steps:
step one, using Zernike polynomials to represent the thickness distribution of the phase delay units:
wherein,is a coefficient of a polynomial with length dimension units, superscriptmAn integer representing the azimuth order, anSubscript ofnNon-negative integer representing radial order and range of values；
Step two, taking the phase delay units as components, and forming a densely arranged array structure in a splicing and combining mode;
step three, superposing the densely arranged array structure of the phase delay units on a basic curved surface of the spectacle lens or integrating the densely arranged array structure of the phase delay units into a basal layer of the spectacle lens, so as to ensure that the central normal direction of each phase delay unit is the same as the surface normal direction of the lens basal;
step four, when an imaging wave surface incident from an object side of a lens passes through a phase modulation area of the lens, each phase delay unit divides the sub-aperture of the incident wave surface, and the phase delay units generate localized high-order phase delay for each sub-wave surface;
and fifthly, all the sub-wave surfaces to which the high-order phase delay is applied are fused into a complete emergent wave surface after passing through the lens, wherein the emergent wave surface comprises high-order aberration components, and when the emergent wave surface propagates to the image surface of the spectacle lens, non-uniform minimum diffuse spots with starburst are formed, and can influence the imaging quality of the spectacle lens, form a blurred image surface and further influence the visual quality and contrast sensitivity of the wearer's eye.
The invention designs the frame spectacle lens with potential myopia progression control function by adopting the phase device structure with the high-order phase delay or high-order aberration generation function, the spectacle lens designed by the invention and the frame spectacle with the spectacle lens can ensure that full-view vision correction can be provided in the dynamic visual field range of eyes, and simultaneously, imaging information with high-frequency spatial frequency is actively restrained in a high-order aberration mode through high-order phase modulation of imaging wave surfaces, thereby generating a blurred image surface in a peripheral visual field area and weakening stimulation on eye vision adjustment.
Drawings
For a better understanding of the above and other objects, features, advantages and functions of the present disclosure, reference should be made to the preferred embodiments illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. It will be appreciated by those skilled in the art that the drawings are intended to schematically illustrate preferred embodiments of the present disclosure, and that the scope of the present disclosure is not limited in any way, and that the various components in the drawings are not drawn to scale.
Fig. 1 is a schematic front view of an ophthalmic lens according to a preferred embodiment of the present disclosure.
Fig. 2 is a thickness profile of a phase delay unit of the ophthalmic lens of fig. 1.
Fig. 3 is a schematic diagram of the front structure of the phase delay unit of the spectacle lens of fig. 1.
Fig. 4 is a diffuse patch with starburst on the imaging surface of the ophthalmic lens of fig. 1.
Fig. 5 is a schematic diagram of the front structure of an ophthalmic lens according to a second preferred embodiment of the present disclosure.
Fig. 6 is a thickness profile of the phase delay unit of the ophthalmic lens of fig. 5.
Fig. 7 is a schematic diagram of the front structure of the phase delay unit of the spectacle lens of fig. 5.
Fig. 8 is a diffuse patch with starburst on the imaging surface of the ophthalmic lens of fig. 5.
Wherein:
an ophthalmic lens 1.
A central optical zone 10.
And an outer peripheral optical zone 11.
A phase modulation region 20.
A phase delay unit 3.
The phase delay unit is circumscribed by circle 4.
Detailed Description
The invention is further described below with reference to the accompanying drawings: as shown in the drawing, a continuous high-order phase-modulated ophthalmic lens and a phase modulation method thereof, the ophthalmic lens comprising:
a central optical zone consisting of a continuous smooth base curve of the ophthalmic lens, the center of the central optical zone coinciding with the optical center position of the lens; preferably, the refractive index of the lens in the region is uniform and stable, the refractive power of the lens in the central optical zone meets the prescription requirement of the eye, and
and a phase modulation region surrounding the central optical region, the phase modulation region including a base curve of the ophthalmic lens and phase delay units attached to the base curve or integrated in a base layer of the ophthalmic lens, the phase delay units being closely arranged to each other, connected to a patch, each phase delay unit having a higher order phase delay effect, generating higher order aberrations, the phase delay units having no effect on the base refractive power of the ophthalmic lens.
The phase delay unit is attached to the spectacle lens base surface in the form of a phase layer which generates a phase delay equal to the phase layer thickness distribution multiplied by the difference between the refractive index of the phase layer material and air, and the phase layer is attached to the front surface of the spectacle lens or to the rear surface of the spectacle lens.
The phase retardation unit is integrated in the form of a phase layer in the middle of the ophthalmic lens substrate layer, the amount of phase retardation produced being equal to the phase layer thickness profile multiplied by the difference between the refractive indices of the phase layer material and the lens material.
The phase delay unit generates higher-order phase delay or higher-order aberration with radial orders of 3 order and above.
The phase delay units may produce positive phase delays and the phase delay amplitudes of all the phase delay units are not equal. The phase delay units are closely connected with each other.
The thickness between adjacent phase delay units is in smooth transition, and the adjacent phase delay units do not jump, so that an integral continuous high-order phase modulation effect is formed.
The outline of the phase delay unit is a regular polygon, and of course, the phase delay unit can also be an irregular polygon.
The diameter of the circumcircle of the polygon is in the range of 0.5-mm to 4.0-mm.
The phase delay element, which works effectively in the pupil region, has the effect of forming a diffuse patch with starburst on the image point energy distribution on the image plane.
The central optical zone has a circular working aperture with a radius in the range of 2.5 mm to 6 mm.
The outer edge of the phase modulation area is polygonal or circular, the optical center of the spectacle lens is taken as the origin, and the radius of the outer edge is larger than 15 mm.
The phase delay unit and the spectacle lens base are integrally formed or formed in a split mode and then combined to form the spectacle lens.
A phase modulation method of the continuous high-order phase modulated spectacle lens, which is characterized in that: the method comprises the following steps:
step one, using Zernike polynomials to represent the thickness distribution of the phase delay units:
wherein,is a coefficient of a polynomial, has a length dimension unit, the superscript m represents an integer of azimuth order, andthe subscript n represents a non-negative integer of the radial order and the value range；
Secondly, taking the phase delay units as components, and forming a densely arranged array structure which can be periodic or aperiodic in a splicing and combining mode;
step three, superposing the densely arranged array structure of the phase delay units on a basic curved surface of the spectacle lens or integrating the densely arranged array structure of the phase delay units into a basal layer of the spectacle lens, so as to ensure that the central normal direction of each phase delay unit is the same as the surface normal direction of the lens basal;
step four, when an imaging wave surface incident from an object side of a lens passes through a phase modulation area of the lens, each phase delay unit divides the sub-aperture of the incident wave surface, and the phase delay units generate localized high-order phase delay for each sub-wave surface;
all the sub-wave surfaces with the applied high-order phase delay are fused into a complete emergent wave surface after passing through the lens, the emergent wave surface contains high-order aberration components, non-uniform minimum dispersive spots with starburst are formed when the emergent wave surface propagates to the image surface of the spectacle lens, and the dispersive spots can influence the imaging quality of the spectacle lens, form a blurred image surface and further influence the visual quality and contrast sensitivity of the wearer's eyes.
In the present disclosure, an ophthalmic lens 1 is a lens suitable for wearing in front of the eye by a patient with ametropia. Fig. 1 and 5 show front views of an ophthalmic lens 1. In this embodiment the ophthalmic lens 1 has a pattern of circular aperture profile, alternatively the ophthalmic lens 1 may also be an outer edge profile with a polygonal or other profiled shape.
Referring to fig. 1 and 5, the ophthalmic lens 1 includes an optical zone, a phase modulation zone 20, and the like. The optical zone is capable of providing a refractive power corresponding to the prescribed power of the patient for correcting refractive errors. The optical zone of the ophthalmic lens 1 is optionally made of a material having a refractive index of 1.5 to 1.76 and suitable for use as an ophthalmic lens. The phase modulation zone 20 is capable of providing optical power consistent with the patient prescription while also providing additional higher order phase retardation or higher order aberrations for forming an energy-dispersive imaging patch that creates a blurred peripheral vision for the wearer of the ophthalmic lens 1.
The optical zones include a central optical zone 10 and an outer peripheral optical zone 12 located in the ophthalmic lens 1. The optical zone forms the base surface of the ophthalmic lens 1, which surface is smooth and continuous. The basic surface can be a spherical or aspheric surface with rotational symmetry, or can be a spherocylindrical surface with non-rotational symmetry or a free-form surface.
The central optical zone 11 has a substantially circular working aperture with a radius in the range 2.5 mm to 6 mm.
In the embodiment of fig. 1 and 5, the peripheral optical zone 12 is located between the outer edge of the phase modulation zone 20 and the outer edge of the ophthalmic lens 1. Thus, the spectacle lens 1 is provided with three components, namely, a central optical zone 10, a phase modulation zone 20 and an outer edge optical zone 12, in this order from the center to the edge.
The phase modulation region 20 has a substantially circular outer edge shape. In addition, the outer edge of the phase modulation region 20 may be substantially polygonal, such as square, hexagonal, etc.
In the present disclosure, "substantially polygonal" means that, on a macroscopic level, the outer edge of a certain area or component that is recognizable to a skilled person is the meaning of a regular polygon. For a substantially polygonal region or component, the edges thereof are not necessarily line segments or edges in the form of straight lines, the edges or edges may actually be line segments, wavy line segments or other forms of polylines, and so forth. The region or component is in the sense of "substantially polygonal" on the basis of the shape defined by the outer edges of the region or component as recognized by the skilled artisan.
The phase modulation section 20 includes a plurality of phase delay units 3 attached to each other as shown in fig. 2 or 6.
In the embodiment of fig. 1, for each phase delay unit 3 located at a non-edge position of the phase modulation region 20, 6 adjacent phase delay units 3 are circumferentially distributed. Each of the phase delay units 3 has the same outer edge of a regular hexagon. Each phase delay unit 3 has the same higher-order phase plane type, and generates the same higher-order aberration. Referring to fig. 3, each phase delay unit 3 is spliced by the edges of a regular hexagon.
In the embodiment of fig. 5, for each phase delay unit 3 located at a non-edge position of the phase modulation region 20, 4 adjacent phase delay units 3 are circumferentially distributed. Each phase delay unit 3 has the same outer edge of a regular quadrangle. Each phase delay unit 3 has the same higher-order phase plane type, and generates the same higher-order aberration. Referring to fig. 7, the phase delay units 3 are spliced by the edges of a regular quadrangle.
Referring to fig. 1 and 5, the phase delay units 3 attached to each other means that the surface heights of the phase delay units 3 at the positions where they are spliced with each other are uniform, so as to form a continuous curved transition.
In the embodiment of fig. 1 and 5, the phase retardation unit 3 is attached to the spectacle base surface in the form of a phase layer, the thickness distribution of which is multiplied by the difference between the refractive indices of the phase layer and air, determining the higher order phase retardation componentAnd (3) cloth. For example, in fig. 2 and 6, the thickness distribution of the phase layer is represented by a Zernike polynomial, where the thickness of the phase layer of fig. 2 isThe phase layer of FIG. 6 has a thickness of. Furthermore, the thickness distribution of the phase layer may also be represented by a combination of a plurality of Zernike polynomials. If the refractive index of the material of the phase layer isn p The corresponding higher-order phase delay is. Preferably, the phase delay unit 3 generates only high-order phase delays or high-order aberrations having radial orders of 3 and above, and does not contain low-order phase delays or low-order aberrations such as defocus or astigmatism.
In the embodiment of fig. 1-8, the thickness of the phase delay element 3 is positive and the phase layer height exceeds the ophthalmic lens base curve, the phase delay element 3 produces a positive phase delay. Furthermore, the thickness of the phase delay unit 3 may also be negative, in which case the phase layer height will be lower than the ophthalmic lens base curve, and the phase delay unit 3 will produce a negative phase delay.
With the above-designed spectacle lens 1, the imaging wavefront is divided into sub-wavelets in accordance with the distribution of the respective phase delay units 3 when passing through the phase modulation region 20. The higher-order phase delay generated by the phase delay unit 3 brings higher-order aberration to the sub-wave surfaces, all the sub-wave surfaces transmit energy and are superposed on the imaging surface corresponding to the basic surface of the lens, the sub-wave surfaces can not form confocal points, defocusing points positioned in front of and behind the imaging surface, and only energy non-uniform diffuse spots can be formed on the imaging surface, so that the imaging quality is reduced, and the imaging surface is blurred.
Because each phase delay unit 3 in the phase modulation region 20 is arranged in a joint manner, the filling rate of the phase delay unit 3 in the phase modulation region 20 reaches 100%, and therefore the overall curved surface morphology of the phase modulation region 20 is kept continuous. In this case, the higher-order phase retardation or higher-order aberration generated by the phase retardation unit 3 has a global distribution in the phase modulation area 20, ensuring that a blurred image plane is seen when the eye rotation direction is directed to any position of the phase modulation area 20, but still the object image can be basically recognized. The phase delay unit 3 only generates high-order phase delay and high-order aberration, does not generate low-order phase delay and low-order aberration, and avoids ghost imaging situations such as double images or multiple defocused images.
The higher-order phase retardation magnitudes between the respective phase retardation units 3 may be set to be the same or different on the premise of satisfying the provision of the peripheral blurred image surface, and the higher-order aberration effects generated by the respective corresponding phase retardation units 3 may be mutually consistent or non-consistent.
The normal direction of the phase delay unit 3 at its center is substantially the same as the normal direction of the base surface of the position. Although the sub-wave surfaces of the phase delay units 3 do not form a confocal point, the central light of the sub-wave surface corresponding to each phase delay unit 3 is focused on an imaging point of the basic curved surface, so that the superposition of the energy of the sub-wave surface at the image point is ensured, the energy of the image point is diffused to form a diffuse spot, and the required fuzzy imaging effect is realized. Referring to fig. 4 and 8, the image point energy dispersive spots have radial starburst.
In the embodiment of fig. 1-8, the phase delay unit 3 is arranged on the surface of the ophthalmic lens 1 facing the object side, and the outer edge of the phase delay unit 3 is not substantially coplanar with the base surface of the ophthalmic lens 1. The phase delay unit 3 only generates a higher order phase delay, ensuring that the phase delay unit 3 does not have a significant protruding or recessed drop over the base surface of the ophthalmic lens 1, the thickness of the ophthalmic lens 1 remaining relatively stable.
For the phase delay units 3 having the same regular polygon mesh distribution, each phase delay unit 3 is closely surrounded by the adjacent phase delay units 3. For example, in the regular hexagonal grid distribution structure of fig. 1-4, each phase delay unit 3 is surrounded by contacts surrounding 6 phase delay units 3; in the regular tetragonal grid distribution structure of fig. 5-8, each phase delay unit 3 is surrounded by contacts surrounding 4 phase delay units 3.
For the embodiments of the present disclosure, the phase delay units 3 are set to have the same higher-order phase plane type, and these designs enable the wavelet surface generated by the phase delay units 3 to have a uniform higher-order phase delay or higher-order aberration phenomenon, which enables the wave surface after the higher-order phase modulation to form a diffuse patch with a certain size and unevenly dispersed energy on the image surface.
Although the above description and fig. 1 to 8 only show the phase delay unit 3 as a regular hexagonal outer edge and a regular quadrangular outer edge, the outer edge of the phase delay unit 3 may be set to an equilateral triangle or other irregular polygon based on the inventive concept of the present disclosure. These types of phase delay units 3 each ensure that the phase modulation regions 20 are formed in a closely aligned manner on the base surface of the ophthalmic lens 1.
For the phase delay unit 3 of the present disclosure, referring to fig. 3 and 7, the outer edge of which is a regular polygon has a circumscribed circle 4, and the 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, and it is ensured that a plurality of phase delay units 3 can simultaneously exert a higher-order phase delay effect in the pupil range.
In the pupil diameter range, if the number of the phase delay units 3 is large, the higher-order phase delay amplitude of the phase delay unit 3 may be set to a small value; conversely, if the number of phase delay units 3 is small, the higher-order phase delay amplitude of the phase delay unit 3 may be set to a larger value. In both of these different settings, the spectacle lens 1 can achieve an imaging effect like a panada.
Preferably, each phase delay unit 3 is configured to generate only a higher order phase delay, i.e. to generate a corresponding higher order aberration, and not to generate a lower order phase delay and its corresponding low order aberration such as defocus and astigmatism. Here, too, this is to ensure that the phase delay unit 3 does not change the base refractive power of the spectacle lens 1, ensuring that the wearer's eyes also obtain vision distinguishing objects when looking at objects through the phase modulation zone 20.
Preferably, the ophthalmic lens optic zone and the phase modulation zone 20 are integrally formed. In this embodiment, the phase modulation region 20 is located on the surface of the base curve of the spectacle lens 1, and the relative position between the optical region and the phase modulation region 20 is precisely controlled during the molding process. In fact, this is only a preferred embodiment, and the phase modulation region 20 may also be molded in the middle of the base layer of the ophthalmic lens 1, and ensure precise control of the relative position between the optical region and the phase modulation region 20 during molding.
Of course, the integrally formed optical zone and phase modulation zone 20 are not necessary, and for example, in the embodiment shown in fig. 1 and 5, the phase modulation zone 20 may be separately molded and then adhesively secured to the base surface of the ophthalmic lens 1.
The scope of protection of the present disclosure is limited only by the claims. Those skilled in the art, having the benefit of the teachings of this disclosure, will readily recognize alternative constructions to the disclosed structures as viable alternative embodiments, and may combine the disclosed embodiments to create new embodiments that fall within the scope of the appended claims.
Claims (14)
1. A continuous high-order phase modulated ophthalmic lens, characterized by: the ophthalmic lens includes:
a central optical zone consisting of a continuous smooth base curve of the ophthalmic lens, the center of the central optical zone coinciding with the optical center position of the lens; and
and a phase modulation region surrounding the central optical region, the phase modulation region including a base curve of the ophthalmic lens and phase delay units attached to the base curve or integrated in the ophthalmic lens base layer, the phase delay units being closely arranged to each other, connected to a patch, each phase delay unit having a high-order phase delay effect, generating a high-order aberration.
2. A continuous high order phase modulated ophthalmic lens according to claim 1, characterized in that: the phase delay unit is attached to the base curve of the spectacle lens in the form of a phase layer attached to the front surface of the spectacle lens or to the rear surface of the spectacle lens.
3. A continuous high order phase modulated ophthalmic lens according to claim 1, characterized in that: the phase delay unit is integrated in the middle of the spectacle lens substrate layer in the form of a phase layer.
4. A continuous high order phase modulated ophthalmic lens according to claims 1-3, characterized in that: the phase delay unit generates higher-order phase delay or higher-order aberration with radial orders of 3 order and above.
5. A continuous high order phase modulated ophthalmic lens according to claims 1-3, characterized in that: the phase delay units may produce positive phase delays and the phase delay amplitudes of all the phase delay units are not equal.
6. A continuous high order phase modulated ophthalmic lens according to claims 1-3, characterized in that: the phase delay units are closely connected with each other.
7. A continuous high order phase modulated ophthalmic lens according to claim 1 or 6, characterized in that: the thickness between adjacent phase delay units is in smooth transition.
8. A continuous high order phase modulated ophthalmic lens according to claim 1, characterized in that: the appearance of the phase delay unit is regular polygon.
9. A continuous high order phase modulated ophthalmic lens according to claim 1 or 8, characterized in that: the diameter of the circumcircle of the polygon is in the range of 0.5-mm to 4.0-mm.
10. A continuous high order phase modulated ophthalmic lens according to claim 9, characterized in that: the phase delay element, which works effectively in the pupil region, has the effect of forming a diffuse patch with starburst on the image point energy distribution on the image plane.
11. A continuous high order phase modulated ophthalmic lens according to claim 1, characterized in that: the central optical zone has a circular working aperture with a radius in the range of 2.5 mm to 6 mm.
12. A continuous high order phase modulated ophthalmic lens according to claim 1, characterized in that: the outer edge of the phase modulation area is polygonal or circular, the optical center of the spectacle lens is taken as the origin, and the radius of the outer edge is larger than 15 mm.
13. A continuous high order phase modulated ophthalmic lens according to claim 1, characterized in that: the phase delay unit and the spectacle lens base are integrally formed or formed in a split mode and then combined to form the spectacle lens.
14. A phase modulation method for a continuous high-order phase modulated ophthalmic lens according to any one of claims 1 to 13, characterized in that: the method comprises the following steps:
step one, using Zernike polynomials to represent the thickness distribution of the phase delay units:
wherein,is a coefficient of a polynomial with length dimension units, superscriptmAn integer representing the azimuth order, anLower part of the lower partLabel (C)nNon-negative integer representing radial order and range of values；
Step two, taking the phase delay units as components, and forming a densely arranged array structure in a splicing and combining mode;
step three, superposing the densely arranged array structure of the phase delay units on a basic curved surface of the spectacle lens or integrating the densely arranged array structure of the phase delay units into a basal layer of the spectacle lens, so as to ensure that the central normal direction of each phase delay unit is the same as the surface normal direction of the lens basal;
step four, when an imaging wave surface incident from an object side of a lens passes through a phase modulation area of the lens, each phase delay unit divides the sub-aperture of the incident wave surface, and the phase delay units generate localized high-order phase delay for each sub-wave surface;
and fifthly, all the sub-wave surfaces to which the high-order phase delay is applied are fused into a complete emergent wave surface after passing through the lens, wherein the emergent wave surface comprises high-order aberration components, and when the emergent wave surface propagates to the image surface of the spectacle lens, non-uniform minimum diffuse spots with starburst are formed, and can influence the imaging quality of the spectacle lens, form a blurred image surface and further influence the visual quality and contrast sensitivity of the wearer's eye.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211504227.0A CN117148598A (en) | 2022-11-29 | 2022-11-29 | Continuous high-order phase modulation spectacle lens and phase modulation method thereof |
| PCT/CN2023/110709 WO2024113934A1 (en) | 2022-11-29 | 2023-08-02 | Continuous high-order phase modulation spectacle lens, and phase modulation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211504227.0A CN117148598A (en) | 2022-11-29 | 2022-11-29 | Continuous high-order phase modulation spectacle lens and phase modulation method thereof |
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| Publication Number | Publication Date |
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| CN117148598A true CN117148598A (en) | 2023-12-01 |
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|---|---|---|---|
| CN202211504227.0A Pending CN117148598A (en) | 2022-11-29 | 2022-11-29 | Continuous high-order phase modulation spectacle lens and phase modulation method thereof |
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| Country | Link |
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| CN (1) | CN117148598A (en) |
| WO (1) | WO2024113934A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG10201400920RA (en) * | 2014-03-24 | 2015-10-29 | Menicon Singapore Pte Ltd | Apparatus and methods for controlling axial growth with an ocular lens |
| EP3759544A1 (en) * | 2018-03-01 | 2021-01-06 | Essilor International | Lens element |
| EP4127825B1 (en) * | 2020-03-31 | 2024-02-28 | Essilor International | Lens element |
| CN113900275B (en) * | 2021-10-22 | 2022-07-19 | 温州医科大学 | Spectacle lens and frame glasses |
| CN114967177A (en) * | 2022-04-29 | 2022-08-30 | 丹阳佰易视光学眼镜有限公司 | Bionic compound eye defocusing lens |
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2022
- 2022-11-29 CN CN202211504227.0A patent/CN117148598A/en active Pending
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| WO2024113934A1 (en) | 2024-06-06 |
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