CN112526646A - Bionic self-adaptive focusing and zooming glasses lens and preparation method thereof - Google Patents

Bionic self-adaptive focusing and zooming glasses lens and preparation method thereof Download PDF

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CN112526646A
CN112526646A CN202011441742.XA CN202011441742A CN112526646A CN 112526646 A CN112526646 A CN 112526646A CN 202011441742 A CN202011441742 A CN 202011441742A CN 112526646 A CN112526646 A CN 112526646A
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film
lens
substrate
layer
zooming
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吴建斌
吴建选
陈建发
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Eyepol Polarizing Technology Xiamen Co Ltd
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Eyepol Polarizing Technology Xiamen Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/08—Oxides
    • C23C14/083—Oxides of refractory metals or yttrium
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/10—Glass or silica
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/221—Ion beam deposition
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • C23C14/28—Vacuum evaporation by wave energy or particle radiation
    • C23C14/30—Vacuum evaporation by wave energy or particle radiation by electron bombardment
    • 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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Abstract

The invention discloses a bionic self-adaptive focusing and zooming spectacle lens and a preparation method thereof, wherein the spectacle lens comprises a spectacle lens substrate and a film coating stack, wherein the film coating stack is formed on one side of the spectacle lens substrate; the film coating stack is used for forming the optical waveguide film layer so as to dynamically adjust the distance of the focal distance according to the position of the distance seen by the two eyes of a wearer. Each layer of the multilayer stacked phase Spatial Light Modulator (SLM) forms an 'equivalent SLM' with increased resolution according to different fields and depths of field and different focuses, and has a light field effect principle, the optical waveguide film of the multilayer stacked phase Spatial Light Modulator (SLM) is realized according to the principle that the distance of the focal length of the optical waveguide film layer of the multilayer stacked phase Spatial Light Modulator (SLM) on a lens is dynamically adjusted according to the position of the distance seen by observing two eyes, so when glasses containing the lens provided by the application are worn, different depth perception of the depth of the field can be obtained from a far position to a near position or from the near position to the far position.

Description

Bionic self-adaptive focusing and zooming glasses lens and preparation method thereof
Technical Field
The invention relates to the technical field of lenses, in particular to a bionic self-adaptive focusing and zooming spectacle lens and a preparation method thereof.
Background
Glasses (glasses) are a combination of lenses and frames for vision improvement, eye protection, or decorative purposes. The glasses can correct a variety of vision problems including myopia, hyperopia, astigmatism, presbyopia, strabismus or amblyopia.
The common optical glasses can cause the wearer to be unable to enjoy reading and other visual field distances in normal real life to change at any time during moving, the visual fatigue and discomfort are strong, the wearer cannot enjoy clear and natural vision, the physical depth of field effect of different visual field focusing such as dynamic continuity of different depth of field visual fields, real three-dimensional full color, high resolution and the like cannot be realized, and the problems of fatigue, discomfort, myopia and the like caused by long-term wearing can be caused.
In order to solve the above technical problems, lenses manufactured by using the ultra-micro convex lens array technology have come to be produced. At present, the functional lens adopting the ultramicro convex lens array technology to carry out the full focus visual field principle is arranged on the market, and an ultramicro concave array is designed on a mould so that the lens is formed into an ultramicro convex lens array by injection molding, namely, the bionic bee eyes are densely distributed with the ultramicro fine ultramicro convex lens array to realize the focusing effect at any time.
However, the existing lens manufactured by adopting the ultramicro convex lens array technology has the following defects:
the designed master mold surface must be finely processed to form an ultramicro concave array and an ultramicro convex lens array on the convex surface of the substrate after injection molding, but the method must use very expensive ultra-precision processing equipment and has poor fineness and stability.
The designed female die with the ultramicro concave array has the advantages of short service life and high manufacturing cost, after multiple times of injection molding, the ultramicro concave array on the female die is gradually worn in the injection molding process with high speed, high pressure and high temperature so that the precision of the concave array is gradually damaged, and the cost is abnormally high because a new die is required to be opened again.
The designed ultramicro convex lens array is easy to generate anomalous dispersion, and the color of a visual field is distorted.
Disclosure of Invention
The invention provides a pair of bionic self-adaptive focusing and zooming glasses lens and a preparation method thereof.
The invention provides the following scheme:
an eyeglass lens for biomimetic adaptive focus zoom, comprising:
the lens comprises a lens substrate and a film coating stack, wherein the film coating stack is formed on one side of the lens substrate; the film coating film stack is used for forming an optical waveguide film layer so as to dynamically adjust the distance of the focal length according to the position of the distance seen by the two eyes of a wearer;
the film coating stack comprises a plurality of layers of optical waveguide film stacks of phase spatial light modulators which are stacked mutually, and the optical waveguide film stacks comprise at least one layer of low-refractive-index film material film layer and at least one layer of high-refractive-index film material film layer which are stacked.
Preferably: the film system structure of the film coating film stack is Sub { (HL)ΛS}Air；
Wherein the content of the first and second substances,
s, marking the number of membrane stack cycles;
h represents a high-refractive-index film material layer with the central wavelength being one quarter of the optical film thickness;
l represents a low refractive index film material layer having an optical film thickness of one quarter of the center wavelength.
Preferably: the center wavelength is 550 nanometers.
Preferably: the high-refractive-index film material is zirconium dioxide, and the low-refractive-index film material is silicon dioxide.
Preferably: the value range of S is 3-15.
Preferably: and a silicon dioxide priming coat is formed between the lens substrate and the coating film stack.
Preferably: the thickness of the lens substrate is 0.6-3.0 mm, and the thickness of the coating film stack is 100-980 nm.
Preferably: the lens substrate is made of any one of a glass substrate, a polycarbonate substrate, a nylon substrate, a polymethyl methacrylate substrate, an acrylic substrate, an MR-8 substrate, an MR-7 substrate and a TAC polarizer substrate.
A preparation method of the bionic adaptive focusing and zooming eyeglass lens comprises the following steps:
forming a silicon dioxide priming layer on the lens substrate by adopting a preset evaporation mode, wherein the preset evaporation mode comprises electron beam evaporation coating and ion beam assisted deposition; the ion bombardment time in the ion beam assisted deposition is 1-6 minutes;
sequentially and alternately evaporating a high-refractive-index zirconium dioxide film material and a low-refractive-index silicon dioxide film material on the silicon dioxide priming layer in the preset evaporation mode according to a preset film system structure until the film stack period number contained in the film system structure is reached;
and (5) after the plating is stopped and the temperature is reduced for half an hour, inflating the vacuum chamber and taking out the manufactured glasses lens.
Preferably: the preset evaporation mode comprises the following production parameters:
the distance between the lens substrate and the evaporant is 40-90 cm, the crystal growth temperature of the lens substrate is 40-80 ℃, the oxygen charging amount is 20-180 SCCM, the beam density is 100 mA-120 mA, and the vacuum degree is 1 multiplied by 10^ (3) Pa-8 multiplied by 10^ (3) Pa during working;
the deposition rate of the silicon dioxide film material with low refractive index is 0.6 nm/s-6.0 nm/s; the deposition rate of the high-refractive-index zirconium dioxide film material is 0.4-5.0 nm/s, and the power of an electron gun is kept at 50-80%; the anode voltage of the electron gun is 100V-130V, the anode current is 3A-10A, the cathode voltage is 20V-50V, and the cathode current is 12A-20A.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the invention, the bionic self-adaptive focusing and zooming glasses lens and the preparation method thereof can be realized, and in an implementation mode, the glasses lens can comprise a lens substrate and a film coating stack, wherein the film coating stack is formed on one side of the lens substrate; the film coating film stack is used for forming an optical waveguide film layer so as to dynamically adjust the distance of the focal length according to the position of the distance seen by the two eyes of a wearer; the film coating stack comprises a plurality of layers of optical waveguide film stacks of phase spatial light modulators which are stacked mutually, and the optical waveguide film stacks comprise at least one layer of low-refractive-index film material film layer and at least one layer of high-refractive-index film material film layer which are stacked. Each layer of the multilayer stacked phase Spatial Light Modulator (SLM) forms an 'equivalent SLM' with increased resolution according to different fields and depths of field and different focuses, and has a light field effect principle, the optical waveguide film of the multilayer stacked phase Spatial Light Modulator (SLM) is realized according to the principle that the distance of the focal length of the optical waveguide film layer of the multilayer stacked phase Spatial Light Modulator (SLM) on a lens is dynamically adjusted according to the position of the distance seen by observing two eyes, so when glasses containing the lens provided by the application are worn, different depth perception of the depth of the field can be obtained from a far position to a near position or from the near position to the far position.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pair of bionic adaptive focusing and zooming glasses lens according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a coating stack according to an embodiment of the present invention;
FIG. 3 is a schematic three-dimensional coordinate diagram of variables included in a beam plenoptic function provided by an embodiment of the present invention;
FIG. 4 is another schematic three-dimensional coordinate diagram of variables included in the beam plenoptic function provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a first technical principle of a bionic adaptive focusing and zooming eyeglass lens according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a second technical principle of a bionic adaptive focusing and zooming eyeglass lens according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a third technical principle of a bionic adaptive focusing and zooming eyeglass lens according to an embodiment of the present invention;
fig. 8 is a reference diagram of the effect of the lens provided by the embodiment of the invention.
In the figure: lens substrate 1, coating film membrane stack 2, optical waveguide film membrane stack 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Examples
Referring to fig. 1 and fig. 2, a pair of bionic adaptive focusing and zooming glasses lens provided in an embodiment of the present invention, as shown in fig. 1 and fig. 2, the glasses lens may include:
the lens comprises a lens substrate 1 and a film coating stack 2, wherein the film coating stack 2 is formed on one side of the lens substrate 1; the film coating film stack is used for forming an optical waveguide film layer so as to dynamically adjust the distance of the focal length according to the position of the distance seen by the two eyes of a wearer;
the coated film stack 2 includes an optical waveguide film stack 21 of a multi-layer phase spatial light modulator stacked on each other, and the optical waveguide film stack 21 includes at least one low refractive index film layer and at least one high refractive index film layer which are stacked.
Specifically, the film system structure of the film coating stack is Sub { (HL) Λ S } Air;
wherein the content of the first and second substances,
s, marking the number of membrane stack cycles;
h represents a high-refractive-index film material layer with the central wavelength being one quarter of the optical film thickness;
l represents a low refractive index film material layer having an optical film thickness of one quarter of the center wavelength.
The center wavelength is 550 nanometers. The high-refractive-index film material is zirconium dioxide, and the low-refractive-index film material is silicon dioxide. The value range of S is 3-15. In order to improve the wear resistance of the lens, a silicon dioxide priming layer is formed between the lens substrate and the coating film stack. The thickness of the lens substrate is 0.6-3.0 mm, and the thickness of the coating film stack is 100-980 nm. The lens substrate is made of any one of a glass substrate, a polycarbonate substrate, a nylon substrate, a polymethyl methacrylate substrate, an acrylic substrate, an MR-8 substrate, an MR-7 substrate and a TAC polarizer substrate.
The embodiment of the application can also provide a method for preparing the bionic self-adaptive focusing and zooming glasses lens, which comprises the following steps:
forming a silicon dioxide priming layer on the lens substrate by adopting a preset evaporation mode, wherein the preset evaporation mode comprises electron beam evaporation coating and ion beam assisted deposition; the ion bombardment time in the ion beam assisted deposition is 1-6 minutes;
sequentially and alternately evaporating a high-refractive-index zirconium dioxide film material and a low-refractive-index silicon dioxide film material on the silicon dioxide priming layer in the preset evaporation mode according to a preset film system structure until the film stack period number contained in the film system structure is reached;
and (5) after the plating is stopped and the temperature is reduced for half an hour, inflating the vacuum chamber and taking out the manufactured glasses lens.
Specifically, the preset evaporation mode comprises the following production parameters:
the distance between the lens substrate and the evaporant is 40-90 cm, the crystal growth temperature of the lens substrate is 40-80 ℃, the oxygen charging amount is 20-180 SCCM, the beam density is 100 mA-120 mA, and the vacuum degree is 1 multiplied by 10^ (3) Pa-8 multiplied by 10^ (3) Pa during working;
the deposition rate of the silicon dioxide film material with low refractive index is 0.6 nm/s-6.0 nm/s; the deposition rate of the high-refractive-index zirconium dioxide film material is 0.4-5.0 nm/s, and the power of an electron gun is kept at 50-80%; the anode voltage of the electron gun is 100V-130V, the anode current is 3A-10A, the cathode voltage is 20V-50V, and the cathode current is 12A-20A.
The application discloses a bionic self-adaptive focusing zoom functional lens adopting an optical waveguide film layer technology of a multilayer stacked phase-Space Light Modulator (SLM), each layer of the multilayer stacked phase-Space Light Modulator (SLM) forms an 'equivalent SLM' with increased resolution according to different field depths of field and different focuses, and the 'equivalent SLM' has a light field effect principle.
According to the distance of the visual objects of the wearer, the focus point of the lens is adjusted at any time, the vision focusing technology of the focal length is changed, the self-adaptive adjustment of the near and far vision is realized, the self-adaptive adjustment of the eye degree is automatically adapted, so that the requirement of frequent switching of the visual focuses of the wearer in different directions and distances is met, a clearer and wider visual field is provided for the wearer in different distances, the focal length of the spectacle lens of the wearer is switched back and forth between digital electronic products and the visual field distance of normal real life at different distances, the visual point is continuous, the physical depth of field is real, the wearer can enjoy the reading and the random switching of other visual field distances of normal real life during moving, the visual fatigue and the uncomfortable feeling are reduced, the clear and natural vision is enjoyed, the dynamic continuous, real three-dimensional full color and high resolution of the visual field with different exact physical depth of field focusing are realized, and the problems of visual fatigue and dizziness caused by the frequent, meanwhile, the device has a comfortable visual field with different depths of field frequently changed in the real world, provides clearer visual field scene and more natural viewing experience for users, has higher spatial color resolution and is significant.
The application discloses a bionic self-adaptive focusing and zooming spectacle lens and a preparation method thereof, the technical principle is that the disclosed optical waveguide film layer technology of a multilayer stacked phase Space Light Modulator (SLM) is adopted, no micro-nano structure is involved, so the visual field scene quality including definition, color and contrast can reach a very high level, the field depth range of the self-adaptive focusing and zooming can cover wide visible light color gamut, high resolution and easy large-area batch preparation, the space color resolution is higher, the function of obtaining different degrees of field depths of the visual field is provided, thereby the visual field panoramic depth is increased, the visual field space is maximized and simultaneously appears, a lens wearer can enjoy the random change of reading and other visual field distances in normal real life in moving, the visual fatigue and the uncomfortable feeling are reduced, and clear and natural vision is enjoyed, the method has the advantages of realizing dynamic continuous, real three-dimensional full-color and high-resolution of different field depths of view, having exact physical field depth effect of different field depth focusing, solving the problems of visual fatigue and dizziness caused by frequent change of field depth focuses, solving the physiological visual information of binocular parallax, moving parallax and focusing blur of a field of view on one hand, and solving the inherent problems of visual fatigue and visual dizziness on the other hand, and improving the problems of fatigue, discomfort, myopia and the like caused by long-term wearing, including the panoramic physical field depth from a near field to a far field.
As shown in fig. 3 and 4, among seven variables included in the plenoptic function of the light beam, x, y, and z represent three-dimensional coordinates of an arbitrary point in the light beam, θ represents a pitch angle transmission direction of the light beam, Φ represents an angle transmission direction of the light beam in a horizontal direction, λ represents a wavelength of the light beam, and t represents time.
The light field is information contained in a light beam in the propagation process and covers information such as light intensity, position, direction and the like. The "light field" defines how photons travel through space and interact with the surface of the material, the focus of the field of view we finally see is the world around us, the beam of light in front of our eyes, the trick of which is to let our eyes more clearly and distinctly look at a specific point in space; of the seven variables included in the plenoptic function L (x, y, z, θ, Φ, t) of a light beam, x, y, z represent the three-dimensional coordinates of any point in the light beam, θ represents the pitch angular transmission direction of the light beam, Φ represents the horizontal angular transmission direction of the light beam, λ represents the wavelength of the light beam, and t represents time.
The application provides a bionic self-adaptive focusing and zooming spectacle lens and a preparation method thereof, wherein the design adopts an optical waveguide film layer technology of a multilayer stacked phase Spatial Light Modulator (SLM), each layer of the multilayer stacked phase Spatial Light Modulator (SLM) forms an equivalent SLM with increased resolution according to different field depths and different focuses, when each layer of the multilayer stacked phase Spatial Light Modulator (SLM) focuses at different distances, the multilayer stacked SLM displays a clearer field with increased resolution when different focus objects are imaged and combined, namely the equivalent SLM, the SLM is obtained in a multilayer stacked arrangement mode and has the same radioactive arrangement function with panoramic depth focusing, each optical waveguide layer of the optical waveguide film layer of each row of phase Spatial Light Modulator (SLM) correspondingly generates a corresponding depth plane (namely a curved depth surface focused in the field) with spherical surface wave front, the focusing and zooming functions with different field depths and visual fields are formed, and the light field focusing and imaging effect is achieved.
The application discloses a spectacle lens using multilayer stacked phase-Space Light Modulator (SLM) optical waveguide film layer technology can obtain a field of view light field full focus multi-dimensional optical radiation depth of field, a light field effect focal length is generated at each corresponding distance, corresponding focusing can be generated at corresponding radial distances of panoramic multi-depth simultaneously, self-adaptive adjustment can be performed according to real-time depth of field fixation point attributes of human vision, and a bionic self-adaptive focusing zooming effect is formed The physiological visual information of three fuzzy aspects is focused, and the inherent problems of visual fatigue and visual dizziness are solved, including the panoramic physical depth of field from a near field to a far field, so that the problems of fatigue, discomfort, myopia and the like caused by long-term wearing are improved.
Experiments prove that the optical waveguide film layer of the multilayer stacked phase Spatial Light Modulator (SLM) can improve the scene perception quality of depth of field of all vision fields for users with lower order aberration in eyes and users with normal vision through independently adjustable focuses. According to the distance of the visual objects of the wearer, the focus point of the lens is adjusted at any time, the vision focusing technology of the focal length is changed, the self-adaptive adjustment of the near and far vision is realized, the self-adaptive adjustment of the eye degree is automatically adapted, so that the requirement of frequent switching of the visual focuses of the wearer in different directions and distances is met, a clearer and wider visual field is provided for the wearer in different distances, the focal length of the spectacle lens of the wearer is switched back and forth between digital electronic products and the visual field distance of normal real life at different distances, the visual point is continuous, the actual physical depth of field is realized, the wearer can enjoy the reading and the random switching of other visual field distances of normal real life in the moving process, the visual fatigue and the uncomfortable feeling are reduced, the clear and natural vision is enjoyed, the dynamic, continuous, real three-dimensional full color and high resolution are realized, the visual field with the physical depth of field effect of different visual field focuses with exact visual field, has great significance.
As shown in fig. 5, each layer of the multi-layer stacked phase Spatial Light Modulator (SLM) forms an "equivalent SLM" with increased resolution according to different depths of field and different focuses, when each layer of the multi-layer stacked phase Spatial Light Modulator (SLM) focuses at different distances from a field, the multi-layer stacked SLM forms a clearer field of view with increased resolution when displaying different focus object imaging combinations, that is, the "equivalent SLM", and the SLM multi-layer stacked arrangement mode obtains the function of panoramic depth focusing with the same radioactive arrangement, and has the light field focusing imaging effect.
As shown in fig. 6, each layer of the multi-layer stacked phase Spatial Light Modulator (SLM) forms an "equivalent SLM" with increased resolution according to different depths of field and different focuses of the field, and the SLM multi-layer stacked arrangement mode obtains the function of having panoramic depth focusing and focusing with the same radioactive arrangement, and has the light field focusing imaging effect.
As shown in fig. 7, each SLM optical waveguide layer of the optical waveguide thin film layer of each column of the phase Spatial Light Modulator (SLM) generates a corresponding depth plane (i.e. a curved depth surface focused in the field of view) with a spherical wavefront, forming a focusing and zooming function with different depth fields.
As shown in fig. 8, in the image a, because the depth planes of the field focus are different in real life, the focus of different fields needs to be frequently changed to adapt to the back-and-forth switching of the focus between different field distances when the field positions are different; b, changing the continuous focusing of the image view point at any time, reducing visual fatigue and uncomfortable feeling, enjoying clear and natural vision, realizing dynamic continuous, real three-dimensional full-color, high-resolution and exact physical field depth effect view with different field focusing, and solving the problem that the visual fatigue and dizziness caused by frequent changing of the field focus are clear.
The application provides a bionic self-adaptive focusing and zooming spectacle lens and a preparation method thereof, wherein the hardware technology adopted in the design aspect is electron beam evaporation coating and Ion Beam Assisted Deposition (IBAD), the advantages are that the prepared film has firm adhesion, compact structure and good environmental stability, and completely meets the requirements of related environmental tests, the evaporated and plated optical waveguide film layer of a stacked multilayer phase Space Light Modulator (SLM) is guided in the adjustment of an optical equivalent admittance value to optimize a visible light full-bandwidth film system, firstly, the ion assisted bombardment deposition of an electron beam evaporation silicon dioxide bottoming layer is carried out on a lens substrate, the ion bombardment time is 1min-6min, then, the evaporation method adopting the alternate superposition of high-refractive index film materials is carried out in sequence according to the film system designed by the application, and the high-refractive index material and low-refractive index material are evaporated and plated on the lens substrate alternately, background vacuum degree of 1X 10Λ(-3)Pa～9×10Λ(-3) Pa, oxygen pressure of 1 × 10 Λ (-2) Pa to 8 × 10 PaΛ(-2) Pa; the film thickness is monitored by adopting an optical monitoring method and a quartz crystal monitoring method in the plating process. The preparation method has the advantages that the prepared coating film layer is firm in adhesion, compact in structure and good in environmental stability, and completely meets the requirements of relevant environmental tests.
The film system of the application is as follows: sub { (HL)ΛS}Air。
L represents a low refractive index film material (SiO) having an optical film thickness of one quarter of the center wavelength2) A silicon dioxide coating film layer.
H represents a high refractive index (ZrO) film material with a central wavelength of one quarter of the optical film thickness2) A zirconium dioxide coating film layer.
S represents the number of membrane stack cycles, and the design range of S is 3-15 cycles.
The center wavelength of the film system was 550 nm.
The lens substrate Sub includes, but is not limited to, the following: the glass base material of the optical lens and the sunglass lens, and any one of a Polycarbonate (PC) base material, a nylon (PA) base material, a CR-39 base material, a PMMA base material, an AC acrylic base material, an MR-8 base material, an MR-7 base material and a TAC polaroid base material.
The production process parameters are as follows:
the distance between the lens substrate and an evaporant is 40 cm-90 cm, the temperature of the substrate crystal growth is 40-80 ℃, the oxygen charging amount is 20-180 SCCM, the beam density is 100 mA-120 mA, and the vacuum degree is 1 multiplied by 10^ 3 Pa-8 multiplied by 10^ 3 Pa during work; ion bombardment for 1-5 min before coating, low refractive index coating material (SiO)2) The deposition rate of the silicon dioxide is 0.6 nm/s-6.0 nm/s; high refractive index film material (ZrO)2) The deposition rate of the zirconium dioxide is 0.4 nm/s-5.0 nm/s, and the power of an electron gun is kept between 50% and 80%; the anode voltage of the electron gun is 100V-130V, and the anode current is 3A-10A; cathode voltage is 20V-50V, and cathode current is 12A-20A; and after the plating is stopped, the temperature is reduced for half an hour, and then the lens is taken out from the air-filled vacuum chamber.
The thickness of the lens substrate is 0.6 mm-3.0 mm, and the optical waveguide film stack of the single-layer phase Space Light Modulator (SLM) is composed of (ZrO) film2) Zirconium dioxide film layer and (SiO)2) The silicon dioxide film layers are overlapped, then the optical waveguide film stacks of the same phase Spatial Light Modulator (SLM) are continuously and alternately overlapped, and the thickness of the total film stack film layer is 100 nm-980 nm.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A bionic self-adaptive focusing and zooming glasses lens is characterized by comprising:
the lens comprises a lens substrate and a film coating stack, wherein the film coating stack is formed on one side of the lens substrate; the film coating film stack is used for forming an optical waveguide film layer so as to dynamically adjust the distance of the focal length according to the position of the distance seen by the two eyes of a wearer;
the film coating stack comprises a plurality of layers of optical waveguide film stacks of phase spatial light modulators which are stacked mutually, and the optical waveguide film stacks comprise at least one layer of low-refractive-index film material film layer and at least one layer of high-refractive-index film material film layer which are stacked.
2. The spectacle lens with bionic self-adaptive focusing and zooming function of claim 1, wherein the structure of the film system of the film coating stack is Sub { (HL)ΛS}Air；
Wherein the content of the first and second substances,
s, marking the number of membrane stack cycles;
h represents a high-refractive-index film material layer with the central wavelength being one quarter of the optical film thickness;
l represents a low refractive index film material layer having an optical film thickness of one quarter of the center wavelength.
3. The biomimetic adaptive focus-variable eyewear lens of claim 2, wherein the center wavelength is 550 nanometers.
4. The biomimetic adaptive focusing and zooming spectacle lens of claim 3, wherein the high refractive index film material is zirconium dioxide and the low refractive index film material is silicon dioxide.
5. The bionic adaptive-focusing and zooming eyeglass lens according to claim 4, wherein S ranges from 3 to 15.
6. The biomimetic adaptive focusing and zooming spectacle lens of claim 1, wherein a silica primer layer is formed between the lens substrate and the coating film stack.
7. The biomimetic adaptive focusing and zooming spectacle lens of claim 1, wherein the thickness of the lens substrate is 0.6-3.0 mm, and the thickness of the film coating stack is 100 nm-980 nm.
8. The bionic adaptive focusing and zooming spectacle lens according to claim 1, wherein the lens substrate is made of any one of a glass substrate, a polycarbonate substrate, a nylon substrate, a polymethyl methacrylate substrate, an acrylic substrate, an MR-8 substrate, an MR-7 substrate and a TAC polarizer substrate.
9. A method for preparing a bionic self-adaptive focusing and zooming spectacle lens according to any one of claims 1 to 8, wherein the method comprises the following steps:
forming a silicon dioxide priming layer on the lens substrate by adopting a preset evaporation mode, wherein the preset evaporation mode comprises electron beam evaporation coating and ion beam assisted deposition; the ion bombardment time in the ion beam assisted deposition is 1-6 minutes;
sequentially and alternately evaporating a high-refractive-index zirconium dioxide film material and a low-refractive-index silicon dioxide film material on the silicon dioxide priming layer in the preset evaporation mode according to a preset film system structure until the film stack period number contained in the film system structure is reached;
and (5) after the plating is stopped and the temperature is reduced for half an hour, inflating the vacuum chamber and taking out the manufactured glasses lens.
10. The method for preparing a pair of bionic adaptive focusing and zooming eyeglass lenses according to claim 9, wherein the preset evaporation mode comprises the following production parameters:
the distance between the lens substrate and the evaporant is 40-90 cm, the crystal growth temperature of the lens substrate is 40-80 ℃, the oxygen charging amount is 20-180 SCCM, the beam density is 100 mA-120 mA, and the vacuum degree is 1 multiplied by 10^ (3) Pa-8 multiplied by 10^ (3) Pa during working;
the deposition rate of the silicon dioxide film material with low refractive index is 0.6 nm/s-6.0 nm/s; the deposition rate of the high-refractive-index zirconium dioxide film material is 0.4-5.0 nm/s, and the power of an electron gun is kept at 50-80%; the anode voltage of the electron gun is 100V-130V, the anode current is 3A-10A, the cathode voltage is 20V-50V, and the cathode current is 12A-20A.
CN202011441742.XA 2020-12-08 2020-12-08 Bionic self-adaptive focusing and zooming glasses lens and preparation method thereof Pending CN112526646A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200923438A (en) * 2007-11-23 2009-06-01 Hon Hai Prec Ind Co Ltd Infrared filter and lens module using the same
CN102197551A (en) * 2008-09-04 2011-09-21 3M创新有限公司 II-VI MQW VCSEL on a heat sink optically pumped by a GAN LD

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200923438A (en) * 2007-11-23 2009-06-01 Hon Hai Prec Ind Co Ltd Infrared filter and lens module using the same
CN102197551A (en) * 2008-09-04 2011-09-21 3M创新有限公司 II-VI MQW VCSEL on a heat sink optically pumped by a GAN LD

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