CN112596269A

CN112596269A - Adjustable liquid lens, optical vision correction glasses and control method thereof

Info

Publication number: CN112596269A
Application number: CN202011502001.8A
Authority: CN
Inventors: 尚小兵; 李进珂; 李长征; 唐掌初
Original assignee: Shenzhen Shiwei Optoelectronic Technology Co ltd
Current assignee: Shenzhen Shiwei Optoelectronic Technology Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-04-02

Abstract

The invention relates to an adjustable liquid lens, optical vision correction glasses and a control method thereof. An adjustable liquid lens optic comprising: first to fourth substrates, a first liquid crystal layer and a second liquid crystal layer which are arranged in a stacked manner; the liquid crystal molecules in the first liquid crystal layer are arranged and deflected substantially in a first series of planes parallel to each other; the liquid crystal molecules in the second liquid crystal layer are arranged and deflected substantially in a second series of planes parallel to each other; and the first series of planes are orthogonal to the second series of planes; the first to fourth substrates have first to fourth electrode layers, respectively; the pixel structure further comprises a plurality of first sub-pixels and second sub-pixels; each sub-pixel comprises a thin film transistor and a transparent pixel electrode. The invention can optically modulate the natural light from the external object in any polarization state, increase the optical transmittance of the intelligent vision optical lens and reduce the unnecessary light intensity loss.

Description

Adjustable liquid lens, optical vision correction glasses and control method thereof

Technical Field

The invention relates to the technical field of liquid crystal lenses, in particular to an adjustable liquid lens, optical vision correction glasses and a control method thereof.

Background

Conventionally, optical glasses for correcting human vision are manufactured by melt molding a transparent optical resin or an optical glass material having a specific refractive index and applying a mechanical process (cutting, grinding, polishing) to produce an optical lens or a composite lens for correcting human vision according to a lens shape designed in advance. Such optical lenses or compound lenses typically have only one specific focal length. When human eyes are in different use scenes, the pupil-shaped crystals can be automatically adjusted according to the distance of a target object so as to clearly see the object, for example, when a user reads a book or watches a computer screen at a short distance, the pupil-shaped crystals of the human eyes can be automatically contracted to generate a lens effect with a smaller focal length, and when the user watches a long-distance object, the pupil-shaped crystals can be automatically relaxed to generate a lens effect with a larger focal length. When the human eyes have vision problems, the pupil-shaped crystals lose all or part of the automatic adjusting function, and the human eyes cannot adjust objects with different distances to clearly image on the retina through the pupil-shaped crystals. For example, a myopic eye patient cannot see distant objects clearly because his pupil-like crystals cannot relax to the normal eye state and assume a larger focal length lens state for a long time. Myopic patients typically require a divergent lens with some optical correction to help them see distant objects. Most myopic patients still have the small-focus lens effect with a certain adjusting range, so that the near-distance objects can be seen clearly by wearing the myopic glasses most of the time. After a myopic eye patient wears the myopic glasses, when the myopic eye patient is in a short-distance eye using state for a long time, if the myopic eye patient uses a computer, makes a file, reads a book, writes for a long time and uses a mobile phone, a tablet personal computer and the like during working, the eyes need to overcome the action effect of divergent lenses of the myopic eye correction glasses, so that the eyeballs are in a double-focusing contraction state for a long time, and the patient tends to be more myopic. For presbyopia (commonly called "presbyopia") patients, the pupil-shaped crystals lose inherent elasticity due to aging and cannot automatically contract to produce a smaller focal length lens effect capable of seeing objects at a short distance, so that a focusing lens effect with certain optical vision is required to be configured to help the patients to see objects at a short distance. When watching a remote object, a presbyopic patient usually needs to take off the glasses for vision to see the remote object because the eyeball of the presbyopic patient has a larger focal length. The frequent glasses-taking and-wearing operations bring great inconvenience to the daily life and work of presbyopic patients.

It can be seen from the above introduction of application background that the current optical vision correction glasses (myopia optical glasses and presbyopic optical glasses) have fixed single focal length and related optical performance due to the fixed product form, so that the optical vision correction function matched in real time cannot be obtained when the optical vision correction glasses are used in different scenes by vision patients, great inconvenience is brought to daily use of people, and even the existing optical vision of human eyes is seriously damaged. Optical lenses with different vision correction functions manufactured in different areas of the same lens have appeared on the market, and related products based on this principle have been developed. When the patient uses the lens, the eyeball of the patient faces different parts of the lens to obtain clear observation effects on a short-distance object and a long-distance object respectively. The product relieves the trouble of frequently picking up the glasses when the old people use the presbyopic glasses to a certain extent. However, the eye ball of the human eye needs to be frequently rotated and moved to a specific lens area in order to obtain the desired optical vision correction function. In addition, the vision correction lenses in the different areas have optical function deformities at the joints, and human eyes feel uncomfortable towards the optical function deformities, and even have symptoms of light headedness and the like when the human eyes are serious. The spectacles with the vision correction function lenses arranged in different areas of the lenses also need to be specially customized according to relevant parameters of the eyes of patients, so that the cost of the spectacles is high, and the delivery time period of the spectacles is long. In recent years, adjustable eyeglasses with a composite multilayer optical lens based on mechanical position adjustment have also been proposed. The scheme consists of a fixed main lens and an auxiliary lens with adjustable positions, and the optical lenses of the auxiliary lens at different positions are combined with the main lens, so that the glasses have a certain optical performance adjusting range. The defects are that the product has larger volume, needs special customized processing according to the parameters of human eyes of a vision patient, has limited optical function adjusting range, slow and complex optical function adjustment and the like.

In summary, none of these existing products has been applied to optical vision correction products such as myopia glasses and hyperopia glasses on a large scale. Aiming at the related problems and limitations of the existing optical vision correction glasses products, a novel optical vision correction glasses which is based on a brand new technical principle and can intelligently output the real-time required optical vision of human eyes according to the specific use scenes of the human eyes is urgently needed in the current market.

Disclosure of Invention

The invention discloses an adjustable liquid lens, optical vision correction glasses and a control method thereof, and aims to solve the technical problems in the prior art.

The invention adopts the following technical scheme: a tunable liquid lens optic, comprising:

a first substrate, a second substrate, a third substrate, and a fourth substrate which are stacked;

a first liquid crystal layer is arranged between the first substrate and the second substrate; a second liquid crystal layer is arranged between the third substrate and the fourth substrate; the liquid crystal molecules in the first liquid crystal layer are arranged and deflected substantially in a first series of planes parallel to each other; the liquid crystal molecules in the second liquid crystal layer are arranged and deflected substantially in a second series of planes parallel to each other; and the first series of planes is orthogonal to the second series of planes;

the first substrate, the second substrate, the third substrate and the fourth substrate are respectively provided with a first electrode layer, a second electrode layer, a third electrode layer and a fourth electrode layer;

the first electrode layer or the second electrode layer comprises a plurality of first sub-pixels arranged in an array, and the third electrode layer or the fourth electrode layer comprises a plurality of second sub-pixels arranged in an array; each of the first and second sub-pixels includes a thin film transistor and a transparent pixel electrode.

As a preferred technical solution, the controllable liquid lens does not include a polarizer.

As a preferable technical solution, the first electrode layer and the third electrode layer are common electrode layers; the second electrode layer comprises a plurality of first sub-pixels arranged in an array; the fourth electrode layer comprises a plurality of second sub-pixels arranged in an array.

As a preferable technical solution, the first electrode layer and the fourth electrode layer are common electrode layers; the second electrode layer comprises a plurality of first sub-pixels arranged in an array; the third electrode layer comprises a plurality of second sub-pixels arranged in an array.

As a preferable technical solution, an optical adhesive layer is provided between the second substrate and the third substrate.

Preferably, the first substrate, the second substrate, the third substrate and the fourth substrate are respectively provided with a first alignment layer, a second alignment layer, a third alignment layer and a fourth alignment layer; the orientation directions of the first orientation layer and the second orientation layer are parallel; the orientation directions of the third orientation layer and the fourth orientation layer are parallel; the orientation directions of the second orientation layer and the third orientation layer are perpendicular to each other.

As a preferred technical scheme, the thin film transistors are all indium gallium zinc oxide thin film transistors.

Preferably, at least 3 of the first substrate, the second substrate, the third substrate, and the fourth substrate have alignment marks.

As a preferable technical solution, the second electrode layer and the third electrode layer each have a data signal line and a scan line; the signal lines and the scanning lines corresponding to the second electrode layer and the third electrode layer are in signal connection with a first interface and a second interface which are respectively arranged at the edges of the second substrate and the third substrate; the first interface and the second interface are arranged adjacently.

As a preferred technical solution, the common electrode of the first electrode layer and the common electrode of the fourth electrode layer are respectively connected to the first interface and the second interface by signals.

The present invention also provides another solution in the form of a common substrate, thus providing only three substrates to achieve similar functionality as the previous solution. This technical scheme provides a can regulate and control liquid lens, includes:

a first substrate, a second substrate, and a third substrate which are stacked; the second substrate has a first surface facing the first substrate and a second surface facing the third substrate;

a first liquid crystal layer is arranged between the first substrate and the second substrate; a second liquid crystal layer is arranged between the second substrate and the third substrate; the liquid crystal molecules in the first liquid crystal layer are arranged and deflected substantially in a first series of planes parallel to each other; the liquid crystal molecules in the second liquid crystal layer are arranged and deflected substantially in a second series of planes parallel to each other; and the first series of planes is orthogonal to the second series of planes;

the first surface of the first substrate and the second substrate, the second surface of the second substrate and the third substrate are respectively provided with a first electrode layer, a second electrode layer, a third electrode layer and a fourth electrode layer; wherein,

the second electrode layer and the third electrode layer on the two sides of the second substrate are both common electrode layers; the first electrode layer comprises a plurality of first sub-pixels arranged in an array; the fourth electrode layer comprises a plurality of second sub-pixels arranged in an array; each of the first sub-pixel and the second sub-pixel comprises a thin film transistor and a transparent pixel electrode;

or the second electrode layer and the third electrode layer on both sides of the second substrate respectively comprise a plurality of first sub-pixels arranged in an array and a plurality of second sub-pixels arranged in an array; the first electrode layer and the fourth electrode layer are both common electrode layers; each of the first and second sub-pixels includes a thin film transistor and a transparent pixel electrode.

It should be understood that the preferred technical solutions in the foregoing technical solutions can all be applied to the present solution, and can be regarded as specific elaboration on the present solution, which is not repeated herein.

Preferably, the optical path length difference Δ n · d of the first liquid crystal layer and/or the second liquid crystal layer is not less than a target optical wavelength λ.

As a preferred technical solution, the pixel resolution of the first sub-pixel and the second sub-pixel arranged in the array is not less than 900 PPI.

As a preferable technical solution, the shape of the adjustable liquid lens is circular, oval, rectangular, square, rounded rectangle, rounded trapezoid, or polygonal.

Preferably, the first liquid crystal layer and/or the second liquid crystal layer can be driven to form an optical phase spatial distribution equivalent to a fresnel lens.

The invention also provides optical vision correction glasses, which comprise a glasses frame, at least one adjustable liquid lens and a driving module, wherein the adjustable liquid lens is any one of the adjustable liquid lens; the adjustable liquid lens and the driving module are arranged on the glasses frame, and the driving module is in signal connection with the adjustable liquid lens.

The invention also provides electronic equipment, which comprises a frame part, at least one adjustable liquid lens or any single-layer liquid lens structure component in the adjustable liquid lens, and a driving module; the adjustable liquid lens is arranged on the frame portion, and the driving module is in signal connection with the adjustable liquid lens.

As a preferred technical scheme, the device also comprises a central processing chip module, a sensor module for monitoring the moving direction and position of the eyeball of the human eye, a wireless communication module, a power supply module, a charging and discharging module and an auxiliary function module; the auxiliary function module is one or more of a gyroscope, an acceleration sensor, a magnetometer and a global position locator.

The invention also provides a method for controlling the adjustable liquid lens according to any one of the above, comprising the following steps:

obtaining a relation curve chart between the optical phase of a first liquid crystal layer and/or a second liquid crystal layer corresponding to a single sub-pixel of the adjustable liquid lens and the driving voltage of the sub-pixel;

obtaining a discretization optical phase space distribution map of the target optical lens;

obtaining a first driving voltage signal spatial distribution diagram corresponding to each first sub-pixel and a second driving voltage signal spatial distribution diagram corresponding to each second sub-pixel on the adjustable liquid lens according to the discretization optical phase spatial distribution diagram;

and applying corresponding driving voltages to the corresponding sub-pixels according to the first driving voltage signal spatial distribution diagram and the second driving voltage signal spatial distribution diagram.

As a preferred technical solution, the control method further includes performing optical phase spatial distribution discretization processing after obtaining an optical phase map of the target optical lens, and allocating an optical phase value to each of the first sub-pixel and the second sub-pixel; the discretization treatment is selected from one of a curve perimeter averaging method, a transverse equidistant averaging method, a longitudinal equidistant averaging method and a segmentation method according to gradient.

As a preferred technical solution, the control method further includes performing fresnel formation processing, preferably segmentation processing according to an equal height principle, on the optical phase map after obtaining the optical phase map of the target optical lens.

As a preferable technical solution, the control method further includes: the first liquid crystal layer and/or the second liquid crystal layer can form a liquid lens effect for correcting myopia or hyperopia of a human eye; the liquid lens effect includes a diverging lens effect or a converging lens effect.

As a preferable technical solution, the control method further includes: the first liquid crystal layer and/or the second liquid crystal layer can form a liquid lens effect for correcting astigmatism of human eyes; the liquid lens effect comprises a cylindrical lens effect or a spherical-cylindrical lens effect or a toroidal lens effect or an asymmetric convergent lens effect or an asymmetric divergent lens effect.

As a preferable technical solution, the control method further includes: the superposition of the liquid lens effects of the first liquid crystal layer and the second liquid crystal layer is equivalent to a comprehensive lens effect; the combined lens effect is capable of correcting myopia or hyperopia, while correcting astigmatism.

The electronic device or the optical vision correction glasses further comprise a readable storage medium, wherein an executable program is stored in the readable storage medium, and the executable program is used for executing any one of the control methods of the controllable liquid lens.

The technical scheme adopted by the invention can achieve the following beneficial effects: the adjustable liquid lens formed by stacking the two independent liquid lenses can optically modulate the natural light in any polarization state from an external object, the optical transmittance of the intelligent visual optical lens is increased, unnecessary light intensity loss is reduced, and the wearing comfort and the experience effect of the intelligent visual glasses are improved. Based on this embodiment, a diverging lens effect for correcting myopia or a converging lens effect for correcting hyperopia and related lens effects for treating problems such as astigmatism can be formed in the adjustable liquid lens according to the type of vision problem of the patient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below to form a part of the present invention, and the exemplary embodiments and the description thereof illustrate the present invention and do not constitute a limitation of the present invention. In the drawings:

fig. 1 is a schematic cross-sectional view of a controllable liquid lens disclosed in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of an adjustable liquid lens disclosed in embodiment 1 of the present invention.

FIG. 3 is a schematic cross-sectional view of a-a' of a tunable liquid lens disclosed in embodiment 1 of the present invention;

FIG. 4 is a schematic b-b' cross-sectional view of a tunable liquid lens disclosed in embodiment 1 of the present invention;

FIG. 5 is a schematic cross-sectional view of a controllable liquid lens disclosed in embodiment 2 of the present invention;

FIG. 6 is a schematic cross-sectional view of a controllable liquid lens disclosed in embodiment 2 of the present invention;

FIG. 7 is a schematic cross-sectional view of a controllable liquid lens disclosed in embodiment 3 of the present invention;

FIG. 8 is a schematic cross-sectional view of another tunable liquid lens disclosed in embodiment 3 of the present invention;

fig. 9 is a schematic diagram of a pixel discretization processing step in the method for controlling an adjustable liquid lens disclosed in embodiment 4 of the present invention;

fig. 10 is a schematic diagram illustrating a fresnel lens type division processing step in the method for controlling an adjustable liquid lens disclosed in embodiment 4 of the present invention;

fig. 11 is a schematic diagram of a step of performing pixel discretization processing on an optical phase of a target lens after fresnel lensing segmentation processing in the method for controlling an adjustable liquid lens disclosed in embodiment 4 of the present invention;

fig. 12 is a schematic perspective view of optical vision correction glasses according to embodiment 5 of the present invention;

fig. 13 is a front view of optical vision correction glasses according to embodiment 5 of the present invention.

Description of reference numerals:

an adjustable liquid lens optic 1; an adjustable area 1-1; a routing area 1-2; a spectacle frame 2; 2-1 of glasses legs; a temple-accommodating case 2-1-1; a first panel 10; a first substrate 11; a second substrate 12; a second panel 20; a third substrate 21; a fourth substrate 22; a first liquid crystal layer 13; a second liquid crystal layer 23; an optical adhesive layer 30; a first interface 15; a second interface 25; a first electrode layer 111; a second electrode layer 121; the third electrode layer 211; a fourth electrode layer 221; a first subpixel 1210; a thin film transistor 1211.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. In the description of the present invention, it is noted that the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.

It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The adjustable liquid lens 1 of the present invention is a novel electrically controlled liquid lens which is based on liquid crystal material, can adjust and control the transmission direction, light intensity distribution, etc. of incident light and finally can perform optical imaging and is driven by an oxide thin film transistor 1211 and has a pixel dot array layout. The vision related parameters of the vision patient measured by an external vision measuring instrument form a target lens optical space phase meeting the real-time vision correction requirement through related optical principles and algorithms, and a series of pixel voltage signals for driving the liquid lens are generated. Outputting a corresponding driving voltage signal by a driving control circuit and driving each electrode pixel in the liquid lens, wherein the liquid lens is formed in a short time (from millisecond magnitude to several seconds) and presents a focusing effect similar to a convex lens or a diverging effect similar to a concave lens; the focal length of the liquid lens can be changed by controlling the driving voltage signal; the aperture size of the liquid lens can be changed by a driving signal of a control driving circuit; the central position, optical axis or mirror axis of the liquid lens can be changed and controlled by the driving signal of the driving circuit; the liquid lens may also produce corresponding optical correction devices and functions for correcting other visual defects of the human eye, such as astigmatism; all the electrodes corresponding to the effective working area of the liquid lens are arranged in a pixel latticed manner, and each single electrode pixel is independently driven and controlled by a thin film transistor 1211 element. The driving circuit controls and drives each dot matrix pixel on the liquid lens in a time division scanning driving mode, further sets the optical phase value of each dot matrix pixel, and finally performs optical imaging on incident light. Specific embodiments of the present invention are described below with reference to FIGS. 1-13.

Example 1

Since liquid crystals naturally have optically anisotropic properties, most liquid crystal devices work only with polarized light of a specific polarization direction. The liquid crystal lens glasses lens only has the function of optical convergence or divergence imaging on linear polarized light which is parallel to the initial orientation direction of liquid crystal or is consistent with the two-dimensional plane direction of the rotation of liquid crystal molecules. For natural light or light in other polarization directions, when the light passes through the liquid lens, some components of the light are converged or diverged by the liquid lens for imaging, and the other components are not acted by the liquid lens and keep the original characteristics to be continuously transmitted, so that the interference effect on human eyes is generated, and the problems of ghost image and even dizziness are generated, so that the conventional liquid crystal lens device can normally work by matching with a linear polarizer. However, the use of polarizers greatly reduces the transmittance of the lenses, and lower transmittance is not tolerable in the field of vision correction glasses.

To solve this problem, this embodiment 1 provides a solution for a controllable liquid lens independent of the polarization state of incident light, and according to fig. 1, the controllable liquid lens 1 includes: a first substrate 11, a second substrate 12, a third substrate 21, and a fourth substrate 22 stacked on each other; a first liquid crystal layer 13 is arranged between the first substrate 11 and the second substrate 12; a second liquid crystal layer 23 is disposed between the third substrate 21 and the fourth substrate 22. The first liquid crystal layer 13 and the second liquid crystal layer 23 preferably use nematic liquid crystal materials.

According to fig. 2, the liquid crystal molecules in the first liquid crystal layer 13 are aligned and deflected substantially in a first series of planes parallel to each other; the liquid crystal molecules in the second liquid crystal layer 23 are aligned and deflected substantially in a second series of planes parallel to each other; and the first series of planes is orthogonal to the second series of planes. The arrangement includes a splay arrangement, a bend arrangement or a mixture of splay and bend arrangements, and does not include a twist arrangement. For ease of understanding, the lens may be considered as a superposition of the first panel 10 and the second panel 20, and those skilled in the art will appreciate that the tunable liquid lens 1 of this embodiment 1 may not be so prepared.

Those skilled in the art will appreciate that the above arrangement is such that the initial alignment of the liquid crystal molecules in the first liquid crystal layer 13 takes any one of the following alignments: parallel arrangement parallel to the substrate surface, perpendicular arrangement perpendicular to the substrate surface, hybrid arrangement with one side in perpendicular orientation and the other side in parallel orientation. When an external field is applied, the liquid crystal molecules in the first liquid crystal layer 13 are aligned and deflected substantially in a first series of planes perpendicular to the substrates, without a twisted alignment effect. The initial alignment of the liquid crystal molecules in the second liquid crystal layer 23 takes any one of the following alignment modes: parallel arrangement parallel to the substrate surface, perpendicular arrangement perpendicular to the substrate surface, hybrid arrangement with one side in perpendicular orientation and the other side in parallel orientation. When an external field is applied, the liquid crystal molecules in the second liquid crystal layer 23 are aligned and deflected substantially in a second series of planes perpendicular to the substrates, without a twisted alignment effect. And the first series of planes and the second series of planes are mutually orthogonal.

The first substrate 11, the second substrate 12, the third substrate 21 and the fourth substrate 22 are respectively provided with a first electrode layer 111, a second electrode layer 121, a third electrode layer 211 and a fourth electrode layer 221; the first electrode layer 111 or the second electrode layer 121 comprises a plurality of first sub-pixels 1210 arranged in an array, and the third electrode layer 211 or the fourth electrode layer 221 comprises a plurality of second sub-pixels arranged in an array; each of the first sub-pixel 1210 and the second sub-pixel includes a thin film transistor 1211 and a transparent pixel electrode. It is to be understood that the controllable liquid lens optic 1 does not comprise a polarizer.

Wherein, the Thin Film Transistor (TFT) component is positioned on the inner surface of the transparent substrate, and the transparent pixel electrode is connected with the drain electrode terminal of the TFT. The thin film transistor can adopt amorphous silicon (a-Si) as an active layer medium, and the device structure of the thin film transistor is consistent with that of an amorphous silicon thin film transistor used in the prior flat panel display panel. In order to improve the transparency, i.e. high transmittance, of the controllable liquid lens 1, preferably, polysilicon (p-Si) is used as an active layer medium for the thin film transistor corresponding to the pixel electrode in the transparent substrate, and the device structure is consistent with that of a polysilicon thin film transistor used in a conventional flat panel display panel. Because the carrier concentration of the TFT device with the polycrystalline silicon active layer is higher, the size of the TFT device can be greatly reduced, and the opening ratio of the transparent pixel electrode is further improved to achieve the effect of increasing the optical transparency of the adjustable liquid lens 1. Further preferably, the liquid optical lens pixels may be driven using a thin film transistor having an oxide semiconductor as an active layer, such as Indium Gallium Zinc Oxide (IGZO) as an active layer medium of the thin film transistor. Since the carrier mobility of the IGZO oxide thin film transistor is 20-30 times that of the a-Si thin film transistor, the aperture opening ratio of the transparent electrode pixel of the intelligent liquid optical lens can be improved due to the reduction of the size of the IGZO-TFT device. In addition, the IGZO thin film transistor has high transparency, so that the intelligent liquid optical lens based on the IGZO thin film transistor, especially the oxide semiconductor thin film transistor, has high optical transparency. Therefore, the thin film transistor in this embodiment 1 is preferably an oxide semiconductor-based thin film transistor, particularly an IGZO-based thin film transistor.

The light-transmitting part of the pixel electrode needs to be made of a conductive material which meets the requirements of electric conductivity and optical transparency at the same time, such as Indium Tin Oxide (ITO), poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) (PEDOT: PSS) and the like.

According to fig. 3, the first electrode layer 111 and the third electrode layer 211 are common electrode layers; the second electrode layer 121 includes a plurality of first sub-pixels 1210 arranged in an array; the fourth electrode layer 221 includes a plurality of second sub-pixels arranged in an array. An optical adhesive layer 30 is arranged between the second substrate 12 and the third substrate 21. It is preferable that the refractive index of the optical cement layer 30 is equal to the refractive index of the second substrate 12 and the third substrate 21.

The first substrate 11, the second substrate 12, the third substrate 21, and the fourth substrate 22 respectively have a first alignment layer, a second alignment layer, a third alignment layer, and a fourth alignment layer; the alignment layers are respectively arranged on the surfaces of the first electrode layer 111, the second electrode layer 121, the third electrode layer 211 and the fourth electrode layer 221. The orientation directions of the first orientation layer and the second orientation layer are parallel; the orientation directions of the third orientation layer and the fourth orientation layer are parallel; the orientation directions of the second orientation layer and the third orientation layer are perpendicular to each other.

Preferably, at least 3 of the first substrate 11, the second substrate 12, the third substrate 21, and the fourth substrate 22 have alignment marks thereon.

Preferably, the second electrode layer 121 and the fourth electrode layer 221 each have a data signal line and a scan line; the data signal lines and the scanning lines are in signal connection with a first interface 15 and a second interface 25 which are respectively arranged at the edges of the second substrate 12 and the fourth substrate 22; the first interface 15 and the second interface 25 are arranged adjacently. Preferably, the common electrode of the first electrode layer 111 and the third electrode layer 211 is signal-connected to the first interface 15 and the second interface 25, respectively.

The thickness of the liquid crystal layer, i.e., the spacing between the two substrates, is determined by spacers or permanent columnar structures formed by photoresist patterning according to optical performance design requirements. Preferably, the optical path difference Δ n · d (product of liquid crystal refractive index anisotropy and liquid crystal layer thickness) of the first liquid crystal layer 13 and/or the second liquid crystal layer 23 is not less than one target optical wavelength λ. For example, when the target optical wavelength λ is 0.555um, if Δ n is 0.2, d is 2.775 um. It is understood that Δ n is the ordinary index of refraction n_oAnd refractive index n of extraordinary ray_eD is the thickness of the liquid crystal layer. If d is set to a larger value, the response speed of the liquid crystal layer is slow, but the optical performance adjusting range of the liquid crystal lens is increased, so that an equivalent lens effect with better imaging is formed, and a balance point must be found between the response speed and the optical performance. The optical path difference Δ n · d of the first liquid crystal layer 13 and/or the second liquid crystal layer 23 is analyzed to be preferably 1 to 2 times, and more preferably 1.1 to 2.2 times, the target optical wavelength λ.

To eliminate the influence of the pixels on the human vision, the resolution of the rasterization of the controllable liquid lens 1 of this embodiment 1 is not less than 900PPI (pixels/inch). That is, the pixel resolution of the first sub-pixel and the second sub-pixel arranged in the array is not less than 900 PPI. Preferably 900-.

Preferably, the shape of the controllable liquid lens optic 1 is circular, oval, rectangular, square, rounded rectangle, rounded trapezoid, polygonal, or any other shape, such as any shape customized according to the specific requirements of the customer.

The second electrode layer 121 and the fourth electrode layer 221 each have a data signal line and a scan line; one end of each of the data signal line and the scanning line is connected to the source electrode of the thin film transistor in the corresponding column and the gate electrode of the thin film transistor in the corresponding row, respectively. The data signal lines and the scanning line signals are externally connected with a first interface 15 and a second interface 25 which are respectively arranged at the edges of the second substrate 12 and the fourth substrate 22; the first interface 15 and the second interface 25 are arranged adjacently. The data signal lines and the scan lines in the device structure are preferably formed by a conductive coating formed by a conductive solution in which a conductive metal thin film, a metal oxide thin film, an organic conductive layer, graphene, and a structural unit having conductive properties, such as nanotubes, nanowires, nanoparticles, and the like are dissolved. Preferably, the fourth substrate 22 has a larger size than the second substrate 12.

In order to reduce the manufacturing difficulty of the device and simplify a drive control system, all pixels on the lens are made of the same material and the structure of the device, and active thin film transistor units are manufactured on each arrayed pixel electrode to be used as control switches for independently driving each pixel point. The driving control circuit can independently drive each dot array pixel on the liquid lens by controlling the on and off of each active thin film transistor unit and matching with the input of data line signals, and controls the orientation arrangement of the liquid crystal molecules corresponding to each pixel point so as to set a corresponding optical phase value for each pixel point.

In fig. 2, the vertical plane on which the liquid crystal of the upper liquid lens is initially aligned and reoriented under an electric field is along the major axis direction of the elliptical lens, the vertical plane on which the liquid crystal of the lower liquid lens is initially aligned and reoriented is along the minor axis direction of the elliptical lens, and the two directions are orthogonal to each other. And the two liquid lenses are accurately aligned by adopting the alignment marks and are cured and bonded by utilizing transparent optical cement. Preferably, the refractive index of the optical adhesive layer 30 is equal to the refractive index of the substrate of the liquid lens, so as to avoid unnecessary light loss caused by reflection, refraction and the like of light transmitted between the two liquid lenses.

As shown in fig. 3, the first liquid crystal layer 13 and the second liquid crystal layer 23 are arranged in a vertical liquid crystal alignment, and the vertical planes of the pre-tilt angles of the liquid crystal molecules in the two liquid lenses are orthogonal to each other, so that no distortion occurs regardless of the initial alignment or the liquid crystal alignment after the electric field is applied. Meanwhile, the working principle that the adjustable liquid lens 1 formed by stacking the two liquid lenses does not depend on the polarization state of light will be described by taking this as an example. The vertical plane where the pre-tilt angle of the liquid crystal molecules of the upper liquid lens is parallel to the long axis of the elliptic lens, the vertical plane where the pre-tilt angle of the liquid crystal molecules of the lower liquid lens is parallel to the short axis of the elliptic lens, and the mutual orthogonality of the vertical planes where the pre-tilt angles of the liquid crystal molecules are respectively ensured when the two lenses are bonded. When the intelligent optical vision glasses are in a working state, the upper liquid lens drives corresponding dot matrix pixels according to external input signal voltage, and liquid crystal molecule arrangement capable of meeting the imaging requirement of divergent incident light is formed in a series of planes which are perpendicular to the substrate and along the section line a-a'.

Meanwhile, the lower liquid lens drives the corresponding dot matrix pixels according to the voltage of an external input signal, and liquid crystal molecule arrangement capable of meeting the imaging requirement of divergent incident light rays is formed in a series of planes which are perpendicular to the substrate and along the section line b-b'. The natural light or any polarized light can be composed of two linear polarized lights with mutually orthogonal polarization directions, and when the external natural light enters the adjustable liquid lens 1, the two linear polarized lights respectively vibrate along the major axis direction and the minor axis direction of the elliptical lens. In the vertical section along the section line a-a', for linearly polarized light vibrating along the long axis direction of the elliptical lens, a liquid crystal director arrangement satisfying the optical phase profile requirement of the objective lens has been formed in the upper liquid lens. And is liquid-permeable at the lower partIn the mirror, although the liquid crystal molecules have been deflected by an external voltage signal, since this linearly polarized light is perpendicular to the liquid crystal molecules everywhere in the underlying liquid lens in the vibration direction thereof, the ordinary refractive index (n) of the liquid crystal material is always perceived_o). The lower liquid crystal layer has a refractive index n for the linearly polarized light_oThe linear polarized light vibrating along the long axis direction of the elliptic lens is subjected to the divergence modulation action of the upper liquid lens and is not subjected to the optical divergence modulation of the lower liquid lens, so that the propagation direction of the linear polarized light is not changed in the lower liquid lens. Based on the same principle, linearly polarized light vibrating along the minor axis direction of the elliptic lens senses the ordinary refractive index (n) of the liquid crystal material everywhere in the upper liquid lens_o) And lens effect generated by rearrangement of liquid crystal molecules under the drive of an external voltage signal can be sensed in the lower liquid lens, so that the linearly polarized light is not subjected to optical modulation of the upper liquid lens but is subjected to optical modulation of the lower liquid lens to generate light divergence imaging effect. Therefore, the adjustable liquid lens 1 formed by stacking the two independent liquid lenses can optically modulate the natural light of any polarization state from the external object, the optical transmittance of the intelligent visual optical lens is increased, unnecessary light intensity loss is reduced, and the wearing comfort and the experience effect of the intelligent visual glasses are further improved. Depending on the type of vision problem of the patient, a converging lens effect for correcting hyperopia and an associated lens effect for treating problems such as astigmatism can likewise be formed in the adjustable liquid lens insert 1.

Example 2

This embodiment provides a controllable liquid lens optic (not shown in the figures), in a first embodiment, different from example 1, the second electrode layer and the third electrode layer are common electrode layers; the first electrode layer comprises a plurality of first sub-pixels arranged in an array; the fourth electrode layer comprises a plurality of second sub-pixels arranged in an array. An optical adhesive layer is arranged between the second substrate and the third substrate. The scheme is beneficial to increasing the convenience of connecting the driving chip and the FPC circuit board. It will be understood by those skilled in the art that the first and fourth substrates may have larger dimensions than the second and third substrates, as desired.

In another preferred second embodiment, the first electrode layer and the fourth electrode layer are common electrode layers, according to what is shown in fig. 5 and 6; the second electrode layer comprises a plurality of first sub-pixels arranged in an array; the third electrode layer comprises a plurality of second sub-pixels arranged in an array. This embodiment contributes to increase of convenience in connection of the driver chip and the FPC board. It will be understood by those skilled in the art that the second and third substrates may have larger dimensions than the first and fourth substrates, as desired.

Example 3

To reduce the overall thickness of the lens and effectively reduce the device cost, this embodiment 3 provides an adjustable liquid lens, which includes, according to fig. 7 to 8: a first substrate, a second substrate, and a third substrate which are stacked; the second substrate has a first surface facing the first substrate and a second surface facing the third substrate.

A first liquid crystal layer is arranged between the first substrate and the second substrate; a second liquid crystal layer is arranged between the second substrate and the third substrate; the initial orientation of the liquid crystal molecules in the first liquid crystal layer is any one of the following orientations: parallel arrangement parallel to the substrate surface, perpendicular arrangement perpendicular to the substrate surface, hybrid arrangement with one side in perpendicular orientation and the other side in parallel orientation. When an external field is applied, the liquid crystal molecules in the first liquid crystal layer are aligned and deflected substantially in a first series of planes perpendicular to the substrates, without a twisted alignment effect.

The initial orientation of the liquid crystal molecules in the second liquid crystal layer is any one of the following orientations: parallel arrangement parallel to the substrate surface, perpendicular arrangement perpendicular to the substrate surface, hybrid arrangement with one side in perpendicular orientation and the other side in parallel orientation. When an external field is applied, the liquid crystal molecules in the second liquid crystal layer are roughly aligned and deflected in a second series of planes vertical to the substrate, and no twisting alignment effect exists; and the first series of planes and the second series of planes are mutually orthogonal.

The first substrate, the first surface of the second substrate, the second surface of the second substrate and the third substrate are respectively provided with a first electrode layer, a second electrode layer, a third electrode layer and a fourth electrode layer.

As shown in fig. 7, the second electrode layer and the third electrode layer on both sides of the second substrate are both common electrode layers; the first electrode layer comprises a plurality of first sub-pixels arranged in an array; the fourth electrode layer comprises a plurality of second sub-pixels arranged in an array; each of the first and second sub-pixels includes a thin film transistor and a transparent pixel electrode. The first electrode layer and the fourth electrode layer are provided with data signal lines and scanning lines; one end of each of the data signal line and the scanning line is connected to the source electrode of the thin film transistor in the corresponding column and the gate electrode of the thin film transistor in the corresponding row, respectively. The data signal lines and the scanning line signals are externally connected with the first interface and the second interface which are respectively positioned at the inner sides of the first substrate and the fourth substrate, and the driving chip and the FPC circuit board which are connected with the first interface and the second interface can be arranged between the first substrate and the fourth substrate so as to provide better and stable connection and provide better product stability when the data signal lines and the scanning line signals are arranged in the glasses frame. It will be understood by those skilled in the art that the second and third substrates may have smaller dimensions than the first and fourth substrates, as desired. Preferably, the FPC board in this embodiment may preferably be a double-sided wiring board, and the first interface and the second interface are preferably arranged oppositely.

In another preferred embodiment, as shown in fig. 8, the second electrode layer and the third electrode layer on both sides of the second substrate include a plurality of first sub-pixels arranged in an array and a plurality of second sub-pixels arranged in an array, respectively; the first electrode layer and the fourth electrode layer are both common electrode layers; each of the first and second sub-pixels includes a thin film transistor and a transparent pixel electrode. This preferred embodiment in example 3 contributes to increase of convenience in connection of the driver chip and the FPC board. It will be understood by those skilled in the art that the second and third substrates may have larger dimensions than the first and fourth substrates, as desired.

In this embodiment 3, the preparation process of the adjustable liquid lens is different, and after the two marks on the lower surface of the first substrate and the upper surface of the second substrate are precisely aligned and the sealant is cured, the two marks on the upper surface of the third substrate and the lower surface of the second substrate are also precisely aligned and the sealant is cured, so as to complete the precise alignment process between the substrates. The final target is accurately aligned to ensure that the lattice pixels on different substrates and the corresponding thin film transistors or the lattice pixels on different surfaces of the same substrate and the corresponding thin film transistors are completely superposed, so that the optical transmittance of the whole lens is improved.

Meanwhile, this example 3 shows a different initial orientation of liquid crystal from that of example 1. As shown in fig. 7-8, the first liquid crystal layer and the second liquid crystal layer are both aligned in an anti-parallel planar liquid crystal orientation, and the vertical planes of the pre-tilt angles of the liquid crystal molecules in the two liquid lenses are orthogonal to each other, and no twist occurs regardless of the initial alignment or the rearrangement of the liquid crystal after the electric field is applied. In the above two embodiments of this example 3, the initial alignment directions of the first liquid crystal layer and the second liquid crystal layer are ensured to be orthogonal to each other.

Example 4

This embodiment 4 provides the method for controlling the adjustable liquid lens 1 of embodiments 1-3, comprising the following steps:

s1, obtaining a relationship curve graph between the optical phase of the first liquid crystal layer 13 and/or the second liquid crystal layer 23 corresponding to a single sub-pixel of the adjustable liquid lens 1 and the driving voltage of the sub-pixel;

s2, obtaining a discretization optical phase space distribution map of the target optical lens;

s3, obtaining a first driving voltage signal spatial distribution map corresponding to each first sub-pixel and a second driving voltage signal spatial distribution map corresponding to each second sub-pixel on the adjustable liquid lens 1 according to the discretized optical phase spatial distribution map;

and S4, applying corresponding driving voltages to the corresponding sub-pixels according to the first driving voltage signal space distribution diagram and the second driving voltage signal space distribution diagram.

Specifically, according to the relevant parameters of the eyes of the vision patients, the target optical lens meeting the vision correction requirements of the vision patients is obtained through optical simulation and design, and then the optical phase diagram of the target optical lens is obtained. The optical phase of the objective lens is discretized according to the actual pixel resolution of the adjustable liquid lens 1, and the discretized optical phase corresponds to each pixel point driven and controlled by the TFT element on the liquid lens one by one, as shown in fig. 9. The discretization of the optical phase pixels of the target optical lens can adopt any one of a curve circumference averaging method, a transverse equidistant averaging method, a longitudinal equidistant averaging method and a gradient segmentation method. The curve circumference dividing method is a method of dividing the optical phase curve length in a certain direction of the target lens by the pixel resolution value in the corresponding direction of the actual adjustable liquid lens 1 so as to divide the optical phase curve length equally; the transverse equidistant dividing method is a method for dividing the optical phase curve of the target lens at equal intervals in the transverse direction, namely the absolute value of the difference of the transverse coordinates of any two adjacent dividing points on the curve is kept constant; the longitudinal equidistant bisection method is a method for dividing the optical phase curve of the target lens at equal intervals in the longitudinal direction, namely the absolute value of the difference value of the longitudinal coordinates of any two adjacent dividing points on the curve is kept constant; the steepness dividing method is a method of dividing the optical phase curve of a target lens according to the steepness of each position on the optical phase curve. The curve is accurately represented by adopting a small number of dividing points at the position with small curve gradient. By adopting the optical phase pixel discretization processing method, a corresponding optical phase value can be distributed to each pixel point on the actually adjustable liquid lens 1. Obtaining a relation curve chart between the optical phase of the liquid crystal device corresponding to a single pixel point of the adjustable liquid lens 1 and the driving voltage by utilizing simulation design or actual measurement, distributing a corresponding driving voltage signal for each pixel point on the adjustable liquid lens 1 by utilizing the relation curve chart between the optical phase of the single liquid crystal device and the driving voltage according to the optical phase value distributed to each pixel on the intelligent lens through pixel discretization processing, and finally obtaining the whole driving voltage signal space distribution chart corresponding to all pixels on the adjustable liquid lens 1.

In practice, if the target lens is required to have a high deflection modulation capability for incident light, a large optical phase difference between the middle portion and the edge portion of the target lens is required, which may increase the thickness of the liquid lens device, and thus increase the driving voltage and the response time of the device. To solve this problem, after the optical phase diagram of the target lens is obtained through optical simulation and design, the optical phase diagram of the target lens is divided according to the equal period principle or the equal height principle, and then the optical phase diagram of the target lens based on the fresnel lens form is obtained, as shown in fig. 10. The equal period principle division means that a target lens phase curve is divided according to the principle that the periods of all sub optical phase segments are equal, and then optical phase segment graphs with equal periods and in a Fresnel lens form are obtained; the equal height principle division means that the target lens phase curve is divided according to the principle that the heights of all the sub optical phase segments are equal, and then optical phase segment graphs with the same height and in the Fresnel lens form are obtained. The control method further comprises performing fresnel segment formalization processing on the optical phase diagram after obtaining the optical phase diagram of the target optical lens, preferably according to equal height principle division processing, as shown in fig. 10. The obtained optical phase distribution graph of the target lens in the fresnel segment form performs pixel discretization on each fresnel-form phase segment according to any one of the curve circumference averaging method, the transverse equidistant averaging method, the longitudinal equidistant averaging method and the steepness segmentation method, and a corresponding optical phase value can be allocated to each pixel point on the actually adjustable liquid lens 1, as shown in fig. 11.

By using a relation curve graph between the optical phase and the driving voltage of the single pixel liquid crystal device and a pixel discretization optical phase space distribution graph of the Fresnel segment type target lens, the whole driving voltage signal space distribution graph corresponding to all pixels on the adjustable liquid lens 1 is obtained. Because the Fresnel-formed optical phase only retains the shape of the optical phase of the target lens and removes the redundant thickness, the liquid lens can have a smaller effective working layer thickness, and the purposes of reducing the driving voltage of the device and reducing the response time of the device can be achieved.

The Fresnel type optical phase diagram of the target lens can also be directly designed by directly utilizing a relevant optical principle according to relevant parameters of human eyes, and the designed diffractive lens also has Fresnel type (segment type) optical phase morphology. The obtained optical phase distribution of the segmented lens is subjected to pixel discretization on each optical phase segment of the target lens according to any one of the curve circumference averaging method, the transverse equidistant averaging method, the longitudinal equidistant averaging method and the gradient segmentation method, namely, each pixel point on the actually adjustable liquid lens 1 is assigned with a corresponding optical phase value. And a relation curve graph between the optical phase of the liquid crystal device of a single pixel and the driving voltage is utilized to further obtain a whole driving voltage signal space distribution diagram corresponding to all pixels on the adjustable liquid lens 1.

The above related art and methods for implementing the liquid lens function based on the adjustable liquid lens 1 hardware can be written as a specific software algorithm and stored in the driver chip system for driving the adjustable liquid lens 1 and the central control chip system. Based on the software algorithm, the relevant driving parameters for forming the target lens function can be automatically generated by inputting the actually measured human eye relevant parameters. The drive control system inputs the voltage value of each pixel into each pixel electrode of the adjustable liquid lens 1, so that the liquid crystal refractive index spatial distribution meeting the optical performance of the target lens can be formed, and the optical lens function and effect meeting the vision correction requirement of human eyes can be realized on the adjustable liquid lens 1 hardware.

Control method for correcting myopia or hypermetropia

On the basis of the control method of embodiment 4, the control method further includes, for correction of myopia or hyperopia: the first liquid crystal layer 13 and/or the second liquid crystal layer 23 can form a liquid lens effect for correcting myopia or hyperopia of a human eye; the liquid lens effect includes a diverging lens effect or a converging lens effect. It will be understood by those skilled in the art that the first liquid crystal layer 13 and the second liquid crystal layer 23 may be formed separately as a liquid lens effect for correcting myopia or hyperopia of the human eye, or the first liquid crystal layer 13 and the second liquid crystal layer 23 may be formed together as a liquid lens effect for correcting myopia or hyperopia of the human eye, and the respective liquid lenses thereof may be superimposed to form a desired divergent lens effect or a convergent lens effect.

Control method for astigmatism correction

Astigmatism is a common vision problem, and can occur in myopia, hyperopia and even normal eyes. The astigmatism problem is mainly that the curvature of human eye organs such as cornea and crystalline lens is asymmetrically distributed at each position due to congenital or acquired ocular non-standardization, or the crystalline lens is not at the right position, so that the human eye cannot accurately focus each part of an external object on the retina at the same distance, and the phenomenon of image misalignment or divergence is caused. In order to solve the astigmatism defect, on the basis of the control method of embodiment 4, a solution is proposed, the control method further comprising, for the case of only astigmatism correction: the first liquid crystal layer 13 and the second liquid crystal layer 23 together form a liquid lens effect for correcting astigmatism of the human eye which acts on natural light; the liquid lens effect comprises a cylindrical lens effect or a spherical-cylindrical lens effect or a toroidal lens effect or an asymmetric convergent lens effect or an asymmetric divergent lens effect.

A preferred control method is proposed for cases where the correction of myopia or hyperopia is accompanied by astigmatic correction, the control method further comprising: the first liquid crystal layer 13 forms a combined lens effect capable of correcting myopia or hyperopia while correcting the accompanying astigmatism in a direction of one polarization component of natural light; the second liquid crystal layer 23 forms a combined lens effect capable of correcting myopia or hyperopia while correcting the accompanying astigmatism in the other polarization component direction of the natural light; the liquid lens effect superposition of the first liquid crystal layer 13 and the second liquid crystal layer 23 is equivalent to a comprehensive lens effect acting on natural light; the combined lens effect is capable of correcting myopia or hyperopia while correcting the accompanying astigmatic problem.

Example 5

This embodiment 5 provides an optical vision correction glasses, as shown in fig. 12, comprising a glasses frame, and the adjustable liquid lens 1 of embodiments 1-3, and a driving module; the adjustable liquid lens 1 and the driving module are arranged on the glasses frame 2, and the driving module is in signal connection with the adjustable liquid lens 1.

The spectacle frame 2 can fix the adjustable liquid lens 1; the eyeglass frame 2 further comprises temples 2-1, preferably temple accommodation compartments 2-1-1 being provided on or in the temples 2-1.

A central processing chip module, a sensor module for monitoring the moving direction and position of eyeballs of human eyes, a wireless communication module, a power supply module, a charging and discharging module and an auxiliary function module are arranged in the glasses leg accommodating bin 2-1-1; the auxiliary function module is one or more of a gyroscope, an acceleration sensor, a magnetometer and a global position locator.

The power module and the charge-discharge module provide electric energy for the whole optical vision correction glasses system, and provide functions of electric quantity management and the like. The wireless communication module can provide the whole system with a data communication transmission function with the outside, even a wireless charging function and the like. The other auxiliary function modules are corresponding modules which are additionally configured according to the corresponding functions of the intelligent optical vision glasses. All modules of the whole system are coordinated by a central processing chip module to provide real-time intelligent optical vision correction function for human eyes.

According to fig. 13, the controllable liquid lens optic 1 has a controllable area 1-1, a routing area 1-2 and possibly an non-controllable area. The wiring area 1-2 is used for signal connection of the adjustable area 1-1 to the lens fixing frame of the glasses frame 2, and further signal connection to the driving module. It will be appreciated by those skilled in the art that the non-controllable regions do not contain any pixels and lines and can therefore be cut. Therefore, the adjustable liquid lens 1 can have various shapes similar to the existing lens and shapes customized according to the requirements of users, and the use value of the optical vision correction glasses is expanded.

Embodiment 5 also provides an electronic device, comprising a frame portion, and at least one adjustable liquid lens module 1 of embodiments 1-3, and a driving module; the adjustable liquid lens 1 is arranged on the frame portion, and the driving module is in signal connection with the adjustable liquid lens 1.

Besides the adjustable liquid lens 1 and the corresponding driving module, the frame part is also provided with a central processing chip module, a sensor module for monitoring the moving direction and position of eyeballs of human eyes, a wireless communication module, a power supply module, a charging and discharging module and an auxiliary function module; the auxiliary function module is one or more of a gyroscope, an acceleration sensor, a magnetometer and a global position locator.

The electronic device or the optical vision correction glasses described above further include a readable storage medium in which an executable program for executing the control method in embodiment 4 is stored.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described specific embodiments. The particular embodiments described above are illustrative only and not limiting. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope and spirit of the invention as set forth in the claims.

Claims

1. A tunable liquid lens optic, comprising:

2. The tunable liquid lens of claim 1, wherein the tunable liquid lens does not include a polarizer.

3. The tunable liquid lens optic of claim 1, wherein the first and fourth electrode layers are a common electrode layer; the second electrode layer comprises a plurality of first sub-pixels arranged in an array; the third electrode layer comprises a plurality of second sub-pixels arranged in an array.

4. The tunable liquid lens optic of claim 1, wherein an optical glue layer is disposed between the second substrate and the third substrate.

5. The tunable liquid lens optic of claim 1, wherein the first, second, third, and fourth substrates have a first alignment layer, a second alignment layer, a third alignment layer, and a fourth alignment layer, respectively; the orientation directions of the first orientation layer and the second orientation layer are parallel; the orientation directions of the third orientation layer and the fourth orientation layer are parallel; the orientation directions of the second orientation layer and the third orientation layer are perpendicular to each other.

6. The tunable liquid lens optic of claim 1, wherein the thin film transistors are indium gallium zinc oxide thin film transistors.

7. The tunable liquid lens optic of claim 1, wherein at least 3 of the first, second, third, and fourth substrates have alignment marks thereon.

8. The tunable liquid lens optic of claim 3, wherein the second electrode layer and the third electrode layer each have a data signal line and a scan line; the data signal lines and the scanning lines corresponding to the second electrode layer and the third electrode layer are in signal connection with a first interface and a second interface which are respectively arranged at the edges of the second substrate and the third substrate; the first interface and the second interface are arranged adjacently.

9. The tunable liquid lens optic of claim 8, wherein a common electrode of the first and fourth electrode layers is signal connected to the first and second interfaces, respectively.

10. A tunable liquid lens optic, comprising:

11. The tunable liquid lens optic of any one of claims 1-10, wherein the optical path difference Δ n-d of the first liquid crystal layer and/or the second liquid crystal layer is not less than a target optical wavelength λ.

12. The tunable liquid lens optic of any one of claims 1-11, wherein the first and second subpixels of the array arrangement have a pixel resolution of not less than 900 PPI.

13. The tunable liquid lens optic of any one of claims 1-12, wherein the shape of the tunable liquid lens optic is circular, elliptical, rectangular, square, rounded rectangular, rounded trapezoidal, polygonal.

14. The tunable liquid lens block of any one of claims 1-13, wherein the first liquid crystal layer and/or the second liquid crystal layer can be driven to form an optical phase spatial distribution equivalent to a fresnel lens.

15. Optical vision correction spectacles comprising a spectacle frame, and at least one controllable liquid lens according to any one of claims 1 to 14, and a drive module;

the adjustable liquid lens and the driving module are arranged on the glasses frame, and the driving module is in signal connection with the adjustable liquid lens.

16. An electronic device comprising a frame portion, and at least one adjustable liquid lens optic of any one of claims 1-14, and a drive module;

the adjustable liquid lens is arranged on the frame portion, and the driving module is in signal connection with the adjustable liquid lens.

17. The electronic device of claim 16, further comprising a central processing chip module, a sensor module for monitoring the moving direction and position of the eyeball of the human eye, a wireless communication module, a power supply module, a charging and discharging module, and an auxiliary function module; the auxiliary function module is one or more of a gyroscope, an acceleration sensor, a magnetometer and a global position locator.

18. A method of controlling a controllable liquid lens optic according to any one of claims 1-14, comprising the steps of:

19. The method of claim 18, wherein after obtaining the optical phase map of the target optical lens, performing an optical phase spatial distribution discretization process to assign an optical phase value to each of the first sub-pixel and the second sub-pixel; the discretization treatment is selected from one of a curve perimeter averaging method, a transverse equidistant averaging method, a longitudinal equidistant averaging method and a segmentation method according to gradient.

20. The method of claim 18, wherein after obtaining the optical phase map of the target optical lens, the optical phase map is fresnel-formatted, preferably segmented according to the equal height principle.

21. The method of claim 18, wherein the first liquid crystal layer and/or the second liquid crystal layer is capable of forming a liquid lens effect for correcting myopia or hyperopia of a human eye; the liquid lens effect includes a diverging lens effect or a converging lens effect.

22. The method of claim 18, wherein the first liquid crystal layer and/or the second liquid crystal layer is capable of forming a liquid lens effect for correcting astigmatism of a human eye; the liquid lens effect comprises a cylindrical lens effect or a spherical-cylindrical lens effect or a toroidal lens effect or an asymmetric convergent lens effect or an asymmetric divergent lens effect.

23. The method of claim 18, wherein the liquid lens effect superposition of the first and second liquid crystal layers is equivalent to a composite lens effect acting on natural light; the combined lens effect is capable of correcting myopia or hyperopia, while correcting astigmatism.

24. The optical vision correction glasses of claim 15 or the electronic device of any one of claims 16-17, further comprising a readable storage medium having stored thereon an executable program for performing the method of controlling a controllable liquid lens of any one of claims 18-23.