Optical path difference adjusting and controlling structure lens

Abstract

An optical path difference adjusting and controlling structure lens, comprising a lens body (1) and a lens portion (2), wherein the lens body (1) comprises a convex surface (11) and a concave surface (12) opposite each other; the lens portion (2) is adjacent to the concave surface (12) of the lens body (1); and the lens portion (2) comprises a micro-lens array, the micro-lens array comprising a plurality of micro-lenses (3) arranged in sequence to form an ultra-microstructure region, and the micro-lenses (3) being of nanoscale diffraction structures and having an effective haze of not more than 15% so as to reduce the spatial frequency and imaging degree of incident light in the ultra-microstructure region. The lens integrates multiple functions such as a defocus optimization design, contrast control and spatial frequency modulation. The ultra-microstructure has a large effective defocusing amount and an ultra-low disturbance amount. The haze of the micro-lenses (3) is controlled at a nanometer level, which can provide a high-fidelity optical effect.

Description

Optical path difference regulation structure lens TECHNICAL FIELD

[0001] The present application relates to the technical field of optical lenses, in particular to an optical path difference regulation structure lens. BACKGROUND

[0002] Myopia prevention and control lenses change the retinal growth signal by imaging peripheral light at a specific position in front or behind the retina, thereby delaying the growth of the eye axis. In related technologies, myopia prevention and control lenses are mostly developed based on DOT, DIMS and DISC technologies; among them, DOT lenses are developed based on retinal contrast signal theory, DISC is a soft corneal contact technology, and is mostly used in contact lenses; DIMS is a myopia prevention and control lens based on peripheral defocus theory, and DIMS lenses and DISC lenses rely on defocus control. The myopia prevention and control lenses in related technologies will cause an unsatisfactory optical fidelity effect due to insufficient contrast control, and the performance of the myopia prevention and control lenses still needs to be improved, and a new type of structure lens is urgently needed to meet the growing demand for myopia prevention and control. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides an optical path difference regulation structure lens, which solves the problem of unsatisfactory optical fidelity effect of the current myopia prevention and control lens due to insufficient contrast control.

[0004] To achieve the above purpose, the present application is implemented by the following technical solutions:

[0005] The present application provides an optical path difference regulation structure lens, which includes a lens body and a lens portion. The lens body includes opposite convex and concave surfaces. The lens portion is adjacent to the concave surface of the lens body and includes a microlens array. The microlens array includes a plurality of microlenses arranged in sequence to form a supermicrostructure region. The microlenses are nanoscale diffractive structures with an effective haze of not more than 15% to reduce the spatial frequency and imaging degree of incident light in the supermicrostructure region. The side of the lens portion away from the concave surface is planar, and the target distance between the concave surface gradually changes along a first direction. The plurality of microlenses are stacked along the first direction, and the number of microlenses in each layer is positively correlated with the corresponding target distance.

[0006] According to a first aspect of the present application, the defocus amount De of the microlens satisfies +4.50D≤De≤+10.00D, where D represents diopter, and +10.00D is the extreme defocus. The microlens reaches the extreme defocus within an 8° field of view, and the defocus amount of the microlens is positively correlated with the field of view.

[0007] According to a first aspect of the embodiments of the present application, the lens material of the microlenses comprises resin, the haze control of the microlenses corresponds to nanoscale, and each microlens has an equivalent light scattering effect to realize contrast control through optical path difference regulation.

[0008] According to the first aspect of the embodiments of the present application, in each layer of microlenses, the plurality of microlenses in the same row and the plurality of microlenses in the same column are aligned along the second direction and the third direction, respectively.

[0009] According to the first aspect of the embodiments of the present application, in each layer of microlenses, the plurality of microlenses in the same row and the plurality of microlenses in the same column are aligned along the second direction and the third direction, respectively.

[0010] According to the first aspect of the embodiments of the present application, in each layer of microlenses, the plurality of microlenses in the same row and the plurality of microlenses in the same column are aligned along the second direction and the third direction, respectively.

[0011] According to the first aspect of the embodiments of the present application, the first fixed distance and the second fixed distance are equal, and the central region to the peripheral region of the optical path difference regulation structure lens is regulated, and the width size range of the lens part is 5mm-75mm.

[0012] According to the first aspect of the embodiments of the present application, the number of microlenses in the lens part exceeds 17436, the size range of the microlenses is 0.01mm-0.15mm, and the unit area of the lens part is arranged with a large number of microlenses to realize high-intensity optical path difference regulation.

[0013] According to the first aspect of the embodiments of the present application, the lens part further comprises a filler composed of a high polymer material, the filler is arranged in the gap between the plurality of microlenses and is integrally formed with the microlens array, and the high polymer material comprises resin.

[0014] According to the first aspect of the embodiments of the present application, the process adopted by the microlenses is at least one of pasting and printing, and the optical path difference regulation structure lens realizes stable defocus overexposure and maximum defocus integration of the macular region from the central region to the peripheral region through the plurality of microlenses.

[0015] The present application provides an optical path difference regulation structure lens. Compared with the prior art, the following beneficial effects are achieved:

[0016] The lens part is arranged on one side of the lens body, and the lens part is in abutment with the concave surface of the lens body. The lens part can form a super microstructure region on one side of the lens body by arranging a plurality of microlenses in sequence. One side of the super microstructure region is formed as a plane, and the distance between the plane and the concave surface of the lens body is not a fixed value. The plurality of microlenses in the super microstructure region are arranged in layers. The number of microlenses in each layer is positively correlated with the corresponding target distance, that is, the microlenses are arranged in corresponding numbers according to the size of the accommodation space to achieve the effect of uniform distribution. The microlenses in the application are nanoscale diffractive structures with an effective haze of not more than 15%, which can reduce the spatial frequency and imaging degree of incident light in the super microstructure region. The effective defocusing amount of the super microstructure is larger, and has an ultra-low disturbance amount. The haze control of the microlenses uses nanoscale, which can provide high-fidelity optical effects. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Fig. 1 is a front view of an optical path difference regulation structure lens provided by an embodiment of the present application;

[0019] Fig. 2 is a perspective view of an optical path difference regulation structure lens provided by an embodiment of the present application;

[0020] Fig. 3 is a left view of an optical path difference regulation structure lens provided by an embodiment of the present application;

[0021] Fig. 4 is a top view of an optical path difference regulation structure lens provided by an embodiment of the present application;

[0022] Fig. 5 is a B-B sectional view of Fig. 1;

[0023] Fig. 6 is an A-A sectional view of Fig. 1;

[0024] Fig. 7 is an enlarged schematic view of part a in Fig. 1;

[0025] Fig. 8 is an enlarged schematic view of part b in Fig. 5;

[0026] Fig. 9 is an enlarged schematic view of part c in Fig. 6.

[0027] Reference signs: lens body 1; convex surface 11; concave surface 12; lens part 2; plane 21; filler 22; microlens 3; first direction X1; second direction X2; third direction X3. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Also, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0030] The embodiments of the present application provide an optical path difference regulation structure lens, and solve the problem of unsatisfactory optical imaging effect caused by insufficient contrast control of the current myopia prevention lens.

[0031] The technical solutions in the embodiments of the present application are as follows to solve the above technical problems:

[0032] The myopia prevention lens changes the retinal growth signal by special optical design, so that the peripheral light is imaged at a specific position in front of or behind the retina, and delays the growth of the eye axis. In the related art, the myopia prevention lens is developed based on DOT, DIMS and DISC technology; wherein, the DOT lens is developed based on the retinal contrast signal theory, the DISC is a soft corneal contact technology, and is mostly used in contact lenses; the DIMS is a myopia prevention lens based on the peripheral defocus theory, and the DIMS lens and the DISC lens rely on defocus control. The myopia prevention lens in the related art will cause unsatisfactory optical fidelity effect due to insufficient contrast control, and the performance of the myopia prevention lens still needs to be improved, and a new type of structure lens is urgently needed to meet the increasing demand for myopia prevention.

[0033] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the description of the drawings and specific embodiments.

[0034] A kind of optical path difference regulation structure lens provided by the embodiments of the present application is introduced as follows.

[0035] The embodiment of the present application provides a light path difference regulation structure lens, please refer to Figures 1-6, the light path difference regulation structure lens comprises a lens body 1 and a lens part 2, the lens body 1 includes opposite convex surface 11 and concave surface 12;The lens part 2 is adjacent to the concave surface 12 of the lens body 1, and the lens part 2 includes a microlens array, and the microlens array includes a plurality of microlenses 3 arranged in sequence to form a supermicrostructure region;Wherein, the microlens 3 is a nanoscale diffractive structure and has an effective haze of not more than 15% to reduce the spatial frequency and imaging degree of incident light in the supermicrostructure region.

[0036] Specifically, the side of the lens part 2 away from the concave surface 12 is a plane 21, and the target distance between the plane 21 and the concave surface 12 gradually changes along a first direction X1, and the plurality of microlenses 3 are arranged in layers along the first direction X1, and the number of microlenses 3 in each layer is positively correlated with the corresponding target distance.

[0037] It should be noted that the nanoscale diffractive structure is a structure with nanoscale characteristic size and based on the principle of light diffraction, and the nanoscale diffractive structure has a periodicity accurately controlled at the nanoscale, and the periodic structure can produce a specific diffraction effect on incident light, and the size of the period is related to the wavelength of the target light, and generally within a certain proportion of the target wavelength, for example, within the range of 0.75 lambda to 3 lambda of the target wavelength lambda.

[0038] In the embodiment of the present application, it can be understood that the lens part 2 is arranged on one side of the lens body 1, the lens part 2 is in contact with the concave surface 12 of the lens body 1, the lens part 2 can form a supermicrostructure region on one side of the lens body 1 by arranging a plurality of microlenses 3 arranged in sequence, and one side of the supermicrostructure region is formed as a plane 21, and the distance between the plane 21 and the concave surface 12 of the lens body 1 is not a fixed value;The plurality of microlenses 3 in the supermicrostructure region are arranged in layers, and the number of microlenses 3 in each layer is positively correlated with the corresponding target distance, that is, the microlenses 3 are arranged in corresponding numbers according to the size of the accommodation space to achieve the effect of uniform distribution.

[0039] It should be noted that the microlens 3 in the present application is a nanoscale diffractive structure and has an effective haze of not more than 10%, which can reduce the spatial frequency and imaging degree of incident light in the supermicrostructure region. The effective defocusing amount of the supermicrostructure is larger, has super-low disturbance, better compliance and better control effect;The haze control of the microlens 3 adopts nanoscale, so as to reduce the imaging force while providing high-fidelity optical effect.

[0040] In some embodiments, the defocus amount De of the microlens 3 satisfies: +4.50D≤De≤+10.00D, wherein D represents diopter, and +10.00D is the extreme defocus; the microlens 3 reaches the extreme defocus within an 8° field of view angle, and the defocus amount of the microlens 3 is positively correlated with the field of view angle.

[0041] Further, the process adopted by the microlens 3 is at least one of pasting and printing, the optical path difference regulation structure lens is from the central to the peripheral area, and the stable defocus overcorrection and the maximum defocus integration of the macular area are realized through the plurality of microlenses 3.

[0042] In the embodiments of the present application, it can be understood that the defocus amount increases with the increase of the field of view angle, the effective defocus amount of the super microstructure area is larger, has a super low disturbance amount, better compliance, and better control effect; the present application is more in line with the physiological characteristics of the human eye by optimizing the defocus design, and the macular area and the enhancement effect are better.

[0043] In some embodiments, the lens material of the microlens 3 includes resin, the haze control of the microlens 3 corresponds to nanoscale, and each microlens 3 is equivalent and has a light scattering effect to realize contrast control through optical path difference regulation.

[0044] In the embodiments of the present application, it can be understood that the optical path is a basic concept in the field of optics, and the optical path is defined as the product of the geometric path of light propagation and the refractive index of the medium. The optical path difference is an important physical quantity that integrates the geometric distance of light propagation and the vibration properties of light waves. The present application can refract and converge light through the setting of the microlens 3, change the propagation path and optical path of light, and the refractive power of each microlens 3 can be independently configured. Each microlens 3 has a substantially same focal point, and nanoscale lens haze control can be realized through the setting of a plurality of microlenses 3, and high-fidelity optical effects can be provided.

[0045] In one example, please refer to FIGS. 7, 8 and 9 together, the lens part 2 further includes a filler 22 composed of a high polymer material, the filler 22 is arranged in the gap between the plurality of microlenses 3 and is integrally formed with the microlens array; the high polymer material includes resin; in addition, the lens body 1 can also be made of a high polymer material.

[0046] In some embodiments, please refer to FIGS. 1, 7, 8 and 9 together, in each layer of microlenses 3, the plurality of microlenses 3 in the same row and the plurality of microlenses 3 in the same column are aligned along the second direction X2 and the third direction X3 respectively. The corresponding adjacent two microlenses 3 in the 2i-th layer of microlenses 3 and the 2i-1-th layer of microlenses 3 are aligned along the first direction X1 and are spaced by a preset first fixed distance, wherein i is a positive integer.

[0047] In the embodiments of the present application, it can be understood that, referring to FIG. 1, the first direction X1 of the microlens 3 is arranged in multiple layers, and the two adjacent microlenses 3 are uniformly distributed at a preset first fixed distance.

[0048] In some other optional embodiments, referring to FIGS. 1, 7, 8 and 9, in each layer of microlenses 3, the 2j-th row of microlenses 3 and the 2j-1-th row of microlenses 3 are distributed at a preset second fixed distance; the 2k-th column of microlenses 3 and the 2k-1-th column of microlenses 3 are distributed at the second fixed distance; wherein j and k are positive integers.

[0049] In the embodiments of the present application, it can be understood that, referring to FIG. 1, in each layer of microlenses 3, the microlenses 3 are uniformly arranged in the corresponding two-dimensional plane, and each row of microlenses 3 and each column of microlenses 3 are spaced apart by a preset second fixed distance.

[0050] In one example, the first fixed distance and the second fixed distance are equal, and the range of the width dimension of the lens part 2 is 5mm-75mm, from the central region to the peripheral region of the optical path difference regulation structure lens. It should be noted that, referring to FIGS. 1 and 2, the center region of the inside of the lens part 2, i.e., the width region of 5mm, is not provided with the microlenses 3.

[0051] In the embodiments of the present application, it can be understood that the microlens is a super-micro defocus lens, and a plurality of microlenses can be arranged in an orthogonal arrangement, and each microlens has a light scattering effect. It should be noted that the light scattering effect refers to the phenomenon that part of the light deviates from the original direction of propagation when encountering a non-uniform medium in the process of propagation. The light outside the direction of propagation is called scattered light. Under the action of incident light, the medium molecules or impurities in the medium polarize to act as a secondary wave source to radiate secondary waves; in a completely pure and uniform medium, the phase relationship of each secondary wave source causes the light to propagate only in the direction of obeying the laws of geometric optics; when the medium is not uniform, the phase of each secondary wave is random, resulting in incoherence of the superposition result of the secondary waves, so that there is light intensity distribution in other directions in addition to the original incident light direction, forming light scattering.

[0052] The present application can change the propagation and scattering characteristics of the lens for light by arranging a plurality of microlenses 3, thereby adjusting the contrast of the light entering the eye to achieve a specific visual effect and physiological effect, which has a positive effect on the prevention and control of myopia; under the action of a plurality of uniformly distributed microlenses 3, the contrast control function and the optical path difference regulation function can be realized at the same time.

[0053] In some embodiments, the number of microlenses 3 in the lens part 2 exceeds 17436, and the size of the microlenses 3 ranges from 0.01mm to 0.15mm. A large number of microlenses 3 are arranged in the unit area of the lens part 2 to achieve high-intensity optical path difference regulation.

[0054] In the embodiments of the present application, it can be understood that a persistent ultra-low disturbance defocus area is formed by more than 33000 microlenses 3; the size of the microlenses of the conventional myopia prevention and control lenses is larger and is usually 0.8mm-2mm; the size of the microlenses 3 is obviously reduced in the present application, so that more microlenses 3 are contained in a unit area, thereby realizing high-intensity optical path difference regulation and then realizing contrast control.

[0055] In summary, compared with the prior art, the present application has the following beneficial effects:

[0056] 1. The present application provides a lens part on one side of the lens body, and a supermicrostructure area is formed on one side of the lens body by arranging a plurality of microlenses in sequence; the microlenses are arranged in corresponding quantities according to the size of the containing space to achieve the effect of uniform distribution.

[0057] 2. The microlenses provided by the present application are nanoscale diffractive structures and have an effective haze of not more than 10%, which can reduce the spatial frequency and imaging degree of incident light in the supermicrostructure area; and at the same time of reducing the imaging power, it provides a high-fidelity optical effect.

[0058] 3. The present application integrates defocus optimization design, contrast control and spatial frequency modulation and other functions; the effective defocus amount of the supermicrostructure area is large, the haze control of the microlenses adopts nanoscale, the defocus design is optimized, and it is more in line with the physiological characteristics of the human eye; under the action of multiple uniformly distributed microlenses, the contrast control function and the optical path difference regulation function can be realized at the same time.

[0059] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An optical path difference modulating structure lens, characterized by, Comprising: a lens body (1) comprising opposite convex (11) and concave (12) surfaces; and a lens portion (2) adjoining the concave surface (12) of the lens body (1), the lens portion (2) comprising a microlens array comprising a plurality of microlenses (3) arranged in sequence to form a supermicrostructure region; wherein the microlenses (3) are nanoscale diffractive structures and have an effective haze of no more than 15% to reduce the spatial frequency and imaging degree of incident light in the supermicrostructure region; the lens portion (2) has a plane (21) on the side away from the concave surface (12) and a target distance between the plane (21) and the concave surface (12) gradually changes in a first direction, the plurality of microlenses (3) are arranged in layers along the first direction, and the number of microlenses (3) in each layer is positively correlated with the corresponding target distance.

2. The optical path difference modulating structure lens according to claim 1, wherein, The defocus amount De of the microlenses (3) satisfies: +4.50D≤De≤+10.00D, wherein D represents diopter, and +10.00D is the extreme defocus amount; the microlenses (3) reach the extreme defocus amount within an 8° field of view, and the defocus amount of the microlenses (3) is positively correlated with the field of view.

3. The OPD-structured lens of claim 1, wherein, The lens material of the microlenses (3) comprises resin, the haze control of the microlenses (3) corresponds to nanoscale, and each microlens (3) has an optical scattering effect to realize contrast control through optical path difference regulation.

4. The OPD-tuned structure lens of any one of claims 1-3, wherein, In each layer of the microlenses (3), a plurality of microlenses (3) in the same row and a plurality of microlenses (3) in the same column are aligned along a second direction and a third direction, respectively.

5. The OPD-Modulated Lens of claim 4, wherein, Corresponding adjacent two microlenses (3) in the 2i-th layer and the 2i-1-th layer of the microlenses (3) are aligned along the first direction and are spaced apart by a preset first fixed distance, wherein i is a positive integer.

6. The OPD-tuned structure lens of claim 5, wherein, In each layer of the microlenses (3), the 2j-th row of microlenses (3) and the 2j-1-th row of microlenses (3) are spaced apart by a preset second fixed distance; the 2k-th column of microlenses (3) and the 2k-1-th column of microlenses (3) are spaced apart by the second fixed distance; wherein j and k are both positive integers.

7. The OPD-structured lens of claim 6, wherein, The first fixed distance and the second fixed distance are equal, from the center to the periphery of the optical path difference regulation structure lens, the size range of the lens portion (2) is 5mm-75mm.

8. The OPD-tuned structure lens of any one of claims 1-3, wherein, The number of microlenses (3) in the lens portion (2) is more than 17436, the size range of the microlenses (3) is 0.01mm-0.15mm, and the unit area of the lens portion (2) is arranged with a large number of microlenses (3) to realize high-intensity optical path difference regulation.

9. The OPD-tuned-structure lens of any of claims 1-3, wherein, The lens portion (2) further comprises a filler (22) composed of a high molecular material, the filler (22) is arranged in the gap between the plurality of microlenses (3) and is integrally formed with the microlens array; and the high molecular material comprises resin.

10. The OPD-tuned-structure lens of any one of claims 1-3, wherein, The microlenses (3) are implemented by at least one of the following processes: sticking and printing. The optical path difference regulating structure lens is from the central area to the peripheral area, and the stable defocus overplus and the maximum defocus integration of the macula area are achieved by the plurality of microlenses (3).

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