CN107748452B - A kind of Zooming method of the Zoom glasses based on liquid crystal lens - Google Patents
A kind of Zooming method of the Zoom glasses based on liquid crystal lens Download PDFInfo
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- CN107748452B CN107748452B CN201711149637.7A CN201711149637A CN107748452B CN 107748452 B CN107748452 B CN 107748452B CN 201711149637 A CN201711149637 A CN 201711149637A CN 107748452 B CN107748452 B CN 107748452B
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/08—Auxiliary lenses; Arrangements for varying focal length
- G02C7/081—Ophthalmic lenses with variable focal length
- G02C7/085—Fluid-filled lenses, e.g. electro-wetting lenses
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/294—Variable focal length devices
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- General Health & Medical Sciences (AREA)
- Liquid Crystal (AREA)
- Eyeglasses (AREA)
Abstract
The invention discloses a kind of Zooming methods of Zoom glasses based on liquid crystal lens, are related to eyewear art, and double diopter glasses include: lens body, double diopter lens, drive module, range finder module and master controller；The Zooming method includes the following steps: firstly, range finder module acquires the ranging data of viewing object in real time, and ranging data is sent to master controller；Then, by ranging data and ranging threshold comparison, eyeglass driving voltage is generated, lens refractive power is controlled.The present invention achievees the purpose that control lens refractive power by applying voltage, the rotation of control liquid crystal and toggle refractions rate to electrode.The eyeglass different zones of glasses provided by the invention are without interval, specious, the problems such as no prism chattering.By range finder module, ranging is carried out to viewing scenery, and control the switching of lens refractive power, be not necessarily to user's operation, improve the convenience used.
Description
Technical field
The present invention relates to eyewear arts, more particularly to a kind of Zooming method of Zoom glasses based on liquid crystal lens.
Background technique
In the case corrected defects of vision, it is often necessary to which there are two types of correct degree for a pair of glasses tool.Such as old man or presbyopia
When user closely reads newspaper, needs to be watched with presbyopic glasses (convex lens), when seeing distant place scenery, need to be watched with goggles.Example again
Such as, in teenage pseudomyopia, it is also desirable to which the glasses of two degrees avoid myopia degree from deepening and correct defects of vision, Yong Huke
Voluntarily to adjust the degree of glasses, the demand of different scenes is adapted to.
In the prior art, there are a kind of Bifocal lenses (or ultexes), it is by two kinds of different refractive power mills same
On one eyeglass, become the eyeglass in two regions, as shown in Figure 2.Disadvantage is that: it is that an eyeglass is divided into the area Liang Ge
Domain, causing glasses different zones has obvious interval, appearance unsightly, there is prism chattering, and upper dizziness of meeting downstairs etc. is asked
Topic；Meanwhile needing hand lift always that spectacle-frame is taken to change focus, it is inconvenient.
Summary of the invention
In view of the above drawbacks of the prior art, liquid is based on technical problem to be solved by the invention is to provide a kind of
The Zooming method of the Zoom glasses of brilliant lens.The automatic adjustment of two kinds of focal lengths of eyeglass is aimed at, it is double to solve the prior art
The different zones of light microscopic piece have obvious interval, appearance unsightly, there is the problems such as prism chattering, realize a kind of glasses from
Dynamic Zooming method.
To achieve the above object, described the present invention provides a kind of Zooming method of Zoom glasses based on liquid crystal lens
Zoom glasses include: lens body, the double diopter lens for correcting defects of vision being installed on the lens body, for driving
Move the drive module of double diopter lens zooms, for acquiring the range finder module and master controller of watching object distance；
The range finder module is identical as the pointing direction of the glasses；
Double diopter lens include: the first eyeglass substrate, the second eyeglass substrate, are filled in the first eyeglass substrate
And second liquid crystal layer between eyeglass substrate and be set to the liquid crystal fitting frame of the liquid crystal layer surrounding；First eyeglass
First transparency electrode layer and second transparency electrode layer are respectively arranged on the inside of substrate and the second eyeglass substrate；First mirror
Support column is not provided between plate base and the second eyeglass substrate；
The first input end of the master controller connects the output end of the range finder module, and the second of the master controller is defeated
Outlet connects the input terminal of the drive module, and the third output end of the drive module connects the first transparency electrode layer,
4th output end of the drive module connects the second transparency electrode layer；
The Zooming method, includes the following steps:
S1, range finder module acquire the ranging data of viewing object in real time, and the ranging data is sent to the master control
Device processed；
S2, the master controller are by the ranging data and ranging threshold comparison；If the ranging data meets the survey
Away from threshold value, then controls the drive module and generate the first driving voltage, the liquid crystal layer is in first state；If the ranging number
According to the ranging threshold value is unsatisfactory for, then controls the drive module and generate the second driving voltage, shown liquid crystal layer is in the second shape
State.
In the technical scheme, by applying voltage, the rotation of control liquid crystal and toggle refractions rate to electrode, reach control mirror
The purpose of piece diopter.Glasses provided by the invention are kept and existing glasses class in shape although being three-decker
Seemingly, compatible existing frame and user's habit.Compared with Bifocal lenses, adjustable, the different zones of two kinds of focal lengths of eyeglass
Without interval, specious, the problems such as no prism chattering.The present invention is corrected for pseudo-myopia, and family observation can be used
High degree glasses are switched to when the scenery of distant place, the low powered posterior chamber glasses switched when observing nearby scenery, to improve user's eyesight.
First substrate and the second substrate are supported in addition, being not provided with support column in the present invention, between liquid crystal layer,
The reason is that, one side support column itself has refractive index, the diopter of glasses will affect, so that eyeglass lens power is distorted, it is another
Aspect, in order to guarantee that double diopters are poor, double ametropia lens of the invention want much thicker relative to traditional liquid crystal box, eyeglass liquid crystal
Layer thickness and precision is so high without the liquid crystal cell of display field, still can satisfy each region thickness of liquid crystal layer without support column
Meet design requirement.It is in short, the present invention is not provided with the advantages of support column, improves the diopter uniformity of eyeglass, change
The optical property of kind eyeglass.
In the technical scheme, using range finder module, ranging is carried out to viewing scenery, and control cutting for lens refractive power
It changes, correction degree is excessively high when avoiding watching close shot, the further deterioration to affect vision；Simultaneously as glasses can automatically switch
Focal length is not necessarily to user's operation, improves the convenience used.
Furthermore, double diopter glasses, further include the input module for ranging threshold value to be arranged；The input
Module is tablet computer, mobile phone or key；
The Zooming method further include: step SA, user sets ranging threshold value using the input module.
In the technical scheme, user can set ranging threshold value, according to the threshold value, glasses voluntarily according to own situation
It voluntarily realizes zoom function, realizes the switching of lens refractive power.Convenient for user's control, meet actual demand, improves glasses intelligence
Change.
Furthermore, at least one interface is arcuate structure in two interfaces of the liquid crystal layer；Double diopters
For eyeglass for correcting defects of vision, the diopter of double diopter lens between the first state and a second state is poor
The ns1For the liquid crystal layer refractive index under first state, the ns2For the liquid crystal layer refractive index under the second state, institute
State ns1≠ns2, andThe r1For the radius of curvature of the primary optical axis at the first interface of liquid crystal layer, r2For liquid crystal layer
The radius of curvature of the primary optical axis of second contact surface, the r1> 0, the r2> 0；If the first interface of the liquid crystal layer is concave surface,
The α=- 1；If the first interface of the liquid crystal layer is plane, α=0；If the first interface of the liquid crystal layer is convex
Face, then α=1；If the second contact surface of the liquid crystal layer is concave surface, the β=- 1；If the second contact surface of the liquid crystal layer
For plane, then β=0；If the second contact surface of the liquid crystal layer is convex surface, β=1.
In the technical scheme, pass throughIt can effectively configure different double in the wrong
The eyeglass of luminosity difference, eyeglass are simple to manufacture.
Furthermore, there are spacing, the liquid crystal patches for the liquid crystal fitting frame and the first eyeglass substrate edges
Closing frame and the second eyeglass substrate edges, there are spacing, and are formed with liquid crystal fitting frame, the first eyeglass substrate, the
The mounting groove that two eyeglass substrates are constituted, the mounting groove are used to for double diopter lens being installed on the frame of the glasses
On.
In the technical scheme, there are gaps between fitting frame and substrate edges, for eyeglass to be mounted on frame,
Including eyeglass is mounted in the bracing wire of half frame glasses.One is opened up again without optist for installing the groove of eyeglass, letter
The technique for changing eyeglass assembly.
Furthermore, first for being pre-configured the aligned liquid crystal layer is provided on the first transparency electrode layer to match
To layer, the second both alignment layers for being pre-configured the aligned liquid crystal layer are provided on the second transparency electrode layer；Described first
Both alignment layers and the second both alignment layers are obtained using light orientation, and the liquid crystal layer uses negative liquid crystal；When double diopter lens
In first state, the negative liquid crystal is vertical array；When double diopter lens are in the second state, the negativity liquid
Crystalline substance is along electric field alignment.
In the technical scheme, using light orientation and negative liquid crystal, the consistency of glasses each region is improved, avoids rubbing
Each region damage of orientation causes inconsistent.Meanwhile the switching of two refractive index of liquid crystal is realized under the electric field.
Furthermore, the alignment direction of first both alignment layers and the second both alignment layers is along double ametropia lens primary optical axis sides
To or the alignment directions of first both alignment layers and the second both alignment layers be along the first eyeglass substrate or the second eyeglass substrate
Radial direction.
In the technical scheme, alignment direction is used along double ametropia lens key light axis directions, the beneficial effect is that ultraviolet
Exposure angle is to expose to substrate from primary optical axis positive direction, only needs a source of parallel light, and exposure efficiency is high, speed is fast.In the skill
In art scheme, alignment direction is the radial direction along substrate, is beneficial in that, the imaging effect at each visual angle is good.
Furthermore, in one specific implementation of the present invention, the liquid crystal layer is in position LiThicknessThe d0For the liquid crystal thickness on main optical axis direction
Degree, the θi1It is the first substrate in position LiRadial direction and primary optical axis angle.
In the technical scheme, the space between the first eyeglass substrate and the second eyeglass substrate forms liquid crystal layer, effectively
The double diopters of realization；Set reasonable liquid crystal layer height by different location, guarantee each position can obtain it is good
It corrects defects of vision effect.
It is noted that the first eyeglass substrate and the second eyeglass substrate can reflect light, can not also influence
The refraction path of light；In an embodiment of the present invention, the first eyeglass substrate, the second eyeglass substrate and liquid crystal layer both participate in light
Refraction；In order to reduce manufacturing procedure and processing cost, the first eyeglass substrate two sides radius of curvature is equal or the second eyeglass substrate
The radius of curvature of two sides is equal.
In one embodiment, the first eyeglass substrate closes on the key light curvature shaft radius at the third interface of the liquid crystal layer
r3The key light curvature shaft radius r at the 4th interface with the first eyeglass substrate far from the liquid crystal layer4It is equal.
In one embodiment, the second eyeglass substrate closes on the key light curvature shaft radius at the 5th interface of the liquid crystal layer
r5The key light curvature shaft radius r at the 6th interface with the second eyeglass substrate far from the liquid crystal layer6It is equal.
Furthermore, the first eyeglass substrate and the second eyeglass substrate at least one for polishing, and described in adjusting
The first pair of dioptric optical value of double diopter lens in the first state.
In the technical scheme, the present invention finely tunes the degree of glasses, the first eyeglass substrate and second for the ease of optist
At least one in eyeglass substrate avoids preset eyeglass degree and user from mismatching, reduces eyeglass factory model for polishing
Classification, improve the adaptability of eyeglass.
The beneficial effects of the present invention are: the present invention is by applying voltage to electrode, control liquid crystal rotates and toggle refractions rate,
Achieve the purpose that control lens refractive power.Glasses provided by the invention are kept and existing in shape although being three-decker
Have that glasses are similar, compatible existing frame and user's habit.Compared with Bifocal lenses, two kinds of focal lengths of eyeglass are adjusted,
Different zones are without interval, specious, the problems such as no prism chattering.The present invention is corrected for pseudo-myopia, can be made
User is switched to high degree glasses when observing distant place scenery, the low powered posterior chamber glasses switched when observing nearby scenery, to improve user
Eyesight.The present invention is not provided with the advantages of support column and is, improves the diopter uniformity of eyeglass, improves the optical of eyeglass
Energy.Using range finder module, ranging is carried out to viewing scenery, and control the switching of lens refractive power, correction when avoiding watching close shot
Degree is excessively high, the further deterioration to affect vision.
Detailed description of the invention
Fig. 1 is the flow diagram of a specific embodiment of the invention；
Fig. 2 is a kind of Bifocal lenses structural schematic diagram in the prior art；
Fig. 3 is the structural schematic diagram of a specific embodiment of the invention；
Fig. 4 is the alignment structure of liquid crystal schematic diagram in a specific embodiment of the invention；
Fig. 5 is the alignment structure of liquid crystal schematic diagram in another specific embodiment of the present invention；
Fig. 6 is structural schematic diagram of the liquid crystal under electric field action in a specific embodiment of the invention；
Fig. 7 is the eyeglass geometric parameter schematic diagram in a specific embodiment of the invention；
Fig. 8 is the eyeglass geometric parameter schematic diagram in another specific embodiment of the present invention.
Specific embodiment
Double light presbyopic glasses, double light spectacles may be implemented in the present invention, and eyeglass lens surface is smooth, no prior art eyeglass
Prism chattering, it is specious the advantages that, present invention will be further explained below with reference to the attached drawings and examples:
As shown in figures 1-8, in the first embodiment of the invention, a kind of zoom of Zoom glasses based on liquid crystal lens is provided
Method, the Zoom glasses include: lens body, double diopter mirrors for correcting defects of vision for being installed on the lens body
Piece, the drive module for driving double diopter lens zooms, for acquire viewing object distance range finder module and
Master controller；The range finder module is identical as the pointing direction of the glasses；
As shown in figure 3, double diopter lens include: the first eyeglass substrate 101, the second eyeglass substrate 107, are filled in
Liquid crystal layer 104 between the first eyeglass substrate 101 and the second eyeglass substrate 107 and it is set to the liquid crystal layer 104 4
The liquid crystal in week is bonded frame 108；Is respectively arranged on the inside of the first eyeglass substrate 101 and the second eyeglass substrate 107
One transparent electrode layer 102 and second transparency electrode layer 106；It is not provided with propping up between the first eyeglass substrate and the second eyeglass substrate
Dagger；
The first input end of the master controller connects the output end of the range finder module, and the second of the master controller is defeated
Outlet connects the input terminal of the drive module, and the third output end of the drive module connects the first transparency electrode layer
102, the 4th output end of the drive module connects the second transparency electrode layer 106；
As shown in Figure 1, the Zooming method, includes the following steps:
S1, range finder module acquire the ranging data of viewing object in real time, and the ranging data is sent to the master control
Device processed；
S2, the master controller are by the ranging data and ranging threshold comparison；If the ranging data meets the survey
Away from threshold value, then controls the drive module and generate the first driving voltage, the liquid crystal layer 104 is in first state；If the survey
Meet the ranging threshold value away from data, then control the drive module and generate the second driving voltage, shown liquid crystal layer 104 is in the
Two-state.
In the present embodiment, double diopter glasses, further include the input module for ranging threshold value to be arranged；It is described defeated
Entering module is tablet computer, mobile phone or key；The Zooming method further include: step SA, user is set using the input module
Determine ranging threshold value.
In the present embodiment, at least one interface is arcuate structure in two interfaces of the liquid crystal layer 104；It is described double in the wrong
For luminosity eyeglass for correcting defects of vision, the diopter of double diopter lens between the first state and a second state is poor
The ns1For 104 refractive index of liquid crystal layer under first state, the ns2For 104 folding of liquid crystal layer under the second state
Penetrate rate, the ns1≠ns2, andThe r1For the radius of curvature of the primary optical axis at 104 first interface of liquid crystal layer,
r2For the radius of curvature of the primary optical axis of 104 second contact surface of liquid crystal layer, the r1> 0, the r2> 0；If the liquid crystal layer 104
First interface is concave surface, then the α=- 1；If the first interface of the liquid crystal layer 104 is plane, α=0；If described
First interface of liquid crystal layer 104 is convex surface, then α=1；If the second contact surface of the liquid crystal layer 104 is concave surface, the β
=-1；If the second contact surface of the liquid crystal layer 104 is plane, β=0；If the second contact surface of the liquid crystal layer 104 is convex
Face, then β=1.
In the present embodiment, there are spacing, institutes with 101 edge of the first eyeglass substrate for the liquid crystal fitting frame 108
Stating liquid crystal fitting frame 108 and 107 edge of the second eyeglass substrate, there are spacing, and formation is bonded frame with the liquid crystal
108, the mounting groove that the first eyeglass substrate 101, the second eyeglass substrate 107 are constituted, the mounting groove are used for double diopters
Eyeglass is installed on the frame of the glasses.
In the present embodiment, it is provided on the first transparency electrode layer 102 and is orientated for being pre-configured the liquid crystal layer 104
The first both alignment layers 103, for being pre-configured that the liquid crystal layer 104 is orientated is provided on the second transparency electrode layer 106
Two both alignment layers 105；First both alignment layers 103 and the second both alignment layers 105 are obtained using light orientation, and the liquid crystal layer 104 is adopted
Use negative liquid crystal；When double diopter lens are in first state, the negative liquid crystal is vertical array；When double dioptrics
Degree eyeglass is in the second state, and the negative liquid crystal is along electric field alignment, as shown in Figure 6.
It is noted that the alignment direction of both alignment layers can be determined according to needs of production, optional orientation
Radial direction of the direction along eyeglass primary optical axis or substrate.
Preferably, in the present embodiment, the alignment direction of first both alignment layers 103 and the second both alignment layers 105 is along double
Ametropia lens key light axis direction, as shown in Figure 4.In an alternative embodiment of the invention, the first both alignment layers 103 and the second both alignment layers
105 alignment direction is along the first eyeglass substrate 101 or 107 radial direction of the second eyeglass substrate, as shown in Figure 5.
The liquid crystal layer is in position LiThickness
The d0For the thickness of liquid crystal layer on main optical axis direction, the θi1It is the first substrate in position LiRadial direction and primary optical axis
Angle.
It, can also be with it is noted that the first eyeglass substrate 101 and the second eyeglass substrate 107 can reflect light
The refraction path of light is not influenced；In an embodiment of the present invention, the first eyeglass substrate 101, the second eyeglass substrate 107 and liquid crystal
Layer 104 both participates in the refraction of light；And reduction processing technology step, it can also by the radius of curvature at two interfaces of eyeglass substrate
It is set as equal.
In an embodiment of the present invention, the first eyeglass substrate 101 closes on the primary optical axis song at the third interface of the liquid crystal layer
Rate radius r3The key light curvature shaft radius r at the 4th interface with the first eyeglass substrate far from the liquid crystal layer4It is equal.It is preferred that
Ground, in this embodiment, the second eyeglass substrate 107 close on the key light curvature shaft radius r at the 5th interface of the liquid crystal layer5With
The key light curvature shaft radius r at sixth interface of the second eyeglass substrate far from the liquid crystal layer6It is equal.
It is noted that being finely adjusted for the ease of optist to eyeglass degree, the first eyeglass substrate 101 and the second mirror
At least one is used to polish plate base 107, and adjusts the first pair of dioptric optical value of double diopter lens in the first state.
Preferably, in the present embodiment, the first eyeglass substrate 101 is for polishing and adjusting eyeglass degree.In another embodiment of the present invention
In, it is to be polished using the second eyeglass substrate 107 and finely tune eyeglass degree.
It is noted that in the present embodiment, fitting frame 108 can also use 3D printing technique or halftone technique
Manufacture.
It is illustrated below with the example that specifically gets the right lensses for one's eyeglasses.
Example 1, as shown in fig. 7, user need to be equipped with the myopia that normality degree is 200 degree, the second state degree is 150 degree
Mirror, i.e. the first diopter are -2D, and the second diopter is -1.5D, and double diopter differences are -0.5D.In figure, it is respectively from bottom to top
First eyeglass substrate 101, liquid crystal layer 104, the second eyeglass substrate 107.Wherein, the also useful throwing in 101 lower surface of the first eyeglass substrate
Light finely tunes eyeglass degree, and the upper and lower interface radius of curvature of the second eyeglass substrate 107 is identical, diopterIt is 0.
The optical texture of liquid crystal layer 104 selects concave and convex lenses form, α=- 1, β=1；After being selected due to liquid crystal material, liquid
Brilliant birefringence and birefringence difference determines that, it is assumed that, the first refractive index of liquid crystal is 1.8, and the second refractive index is 1.3,
Second curvature radiusAccording toR can be obtained2=0.5m.
According toAcquire the first state diopter of liquid crystal layer 104
According toAcquire the second state diopter of liquid crystal layer 104
According toAcquire the diopter of the first eyeglass substrate 101Need
It chooses diopter and is the second eyeglass substrate 107 of -1.0D, and the lower surface of the second eyeglass substrate 107 is processed by shot blasting,
To adjust degree.
About the thickness parameter problem of each position of liquid crystal layer, as shown in fig. 7, can be obtained according to geometrical relationship, each position
Thickness of liquid crystal layerWherein, d0According to optist
Experience is set, and general value range is 50 μm -100 μm.It is noted that in this example, 104 first boundary of liquid crystal layer
Face is spill, and α=- 1, second contact surface is convex, β=1, in fact, the thickness of liquid crystal layer of each position
Example 2, as shown in figure 8, user need to be equipped with the presbyopia that normality degree is 100 degree, the second state degree is 50 degree
Mirror, i.e. the first diopter are+1D, and the second diopter is+0.5D, and double diopter differences are 0.5D.In figure, from bottom to top respectively
One eyeglass substrate 101, liquid crystal layer 104, the second eyeglass substrate 107.Wherein, the also useful polishing in 101 lower surface of the first eyeglass substrate
Eyeglass degree is finely tuned, the upper and lower interface radius of curvature of the second eyeglass substrate 107 is identical, diopterIt is 0.
The optical texture of liquid crystal layer 104 selects biconvex mirror form, α=1, β=1；It is selected using due to liquid crystal material
Afterwards, the birefringence of liquid crystal and birefringence difference determine that, it is assumed that, the first refractive index of liquid crystal is 1.8, and the second refractive index is
1.3, second curvature radiusAccording toIt can obtain
According toAcquire the first state diopter of liquid crystal layer 104
According toAcquire the second state diopter of liquid crystal layer 104
According toAcquire the diopter of the first eyeglass substrate 101Need
The Optical blanks of diopter+0.5D are selected, and are processed by shot blasting, adjustment diopter is+0.2D.
About the thickness parameter problem of each position of liquid crystal layer, as shown in figure 8, can be obtained according to geometrical relationship, each position
Thickness of liquid crystal layerWherein, d0According to optist
Experience is set, and general value range is 50 μm -100 μm.It is noted that in this example, 104 first boundary of liquid crystal layer
Face is convex, and α=1, second contact surface is convex, β=1, in fact, the thickness of liquid crystal layer of each position
The working principle of the invention: not applying voltage in electrode, and under both alignment layers effect, liquid crystal deflects, eyeglass
Diopter be the first diopter；In the case where electrode applies voltage condition, influenced by electric field, liquid crystal deflects, the dioptric of eyeglass
Degree is the second diopter.Certainly, switch, user oneself adjustment can be arranged in double diopter glasses provided by the invention on glasses.
Also range-measuring circuit can be set, detectable substance is away from glasses itself adjust double diopters.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of Zooming method of the Zoom glasses based on liquid crystal lens, which is characterized in that the Zoom glasses include: glasses sheet
Body, the double diopter lens for correcting defects of vision being installed on the lens body, for driving double diopter lens
The drive module of zoom, range finder module and master controller for acquiring viewing object distance；The range finder module with it is described
The pointing direction of glasses is identical；
Double diopter lens include: the first eyeglass substrate, the second eyeglass substrate, are filled in the first eyeglass substrate and
Liquid crystal layer between two eyeglass substrates and the liquid crystal fitting frame for being set to the liquid crystal layer surrounding；The first eyeglass substrate
First transparency electrode layer and second transparency electrode layer are respectively arranged with on the inside of the second eyeglass substrate；The first eyeglass base
Support column is not provided between plate and the second eyeglass substrate；
The first input end of the master controller connects the output end of the range finder module, the second output terminal of the master controller
The input terminal of the drive module is connected, the third output end of the drive module connects the first transparency electrode layer, described
4th output end of drive module connects the second transparency electrode layer；
The Zooming method, includes the following steps:
S1, range finder module acquire the ranging data of viewing object in real time, and the ranging data is sent to the master controller；
S2, the master controller are by the ranging data and ranging threshold comparison；If the ranging data meets the ranging threshold
Value then controls the drive module and generates the first driving voltage, and the liquid crystal layer is in first state；If the ranging data is not
Meet the ranging threshold value, then controls the drive module and generate the second driving voltage, shown liquid crystal layer is in the second state.
2. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as described in claim 1, it is characterised in that: described double
Diopter glasses further include the input module for ranging threshold value to be arranged；The input module is tablet computer, mobile phone or presses
Key；
The Zooming method further include: step SA, user sets ranging threshold value using the input module.
3. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as described in claim 1, it is characterised in that: the liquid
At least one interface is arcuate structure in two interfaces of crystal layer；Double diopter lens are described double in the wrong for correcting defects of vision
The diopter of luminosity eyeglass between the first state and a second state is poor
The ns1For the liquid crystal layer refractive index under first state, the ns2For the liquid crystal layer refractive index under the second state, the ns1
≠ns2, andThe r1For the radius of curvature of the primary optical axis at the first interface of liquid crystal layer, r2For liquid crystal layer second
The radius of curvature of the primary optical axis at interface, the r1> 0, the r2> 0；If the first interface of the liquid crystal layer is concave surface, described
α=- 1；If the first interface of the liquid crystal layer is plane, α=0；If the first interface of the liquid crystal layer is convex surface,
α=1；If the second contact surface of the liquid crystal layer is concave surface, the β=- 1；If the second contact surface of the liquid crystal layer is flat
Face, then β=0；If the second contact surface of the liquid crystal layer is convex surface, β=1.
4. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as described in claim 1, which is characterized in that the liquid
There are spacing, the liquid crystal fitting frame and the second eyeglass substrate sides for crystalline substance fitting frame and the first eyeglass substrate edges
There are spacing for edge, and form the mounting groove constituted with liquid crystal fitting frame, the first eyeglass substrate, the second eyeglass substrate, institute
Mounting groove is stated for double diopter lens to be installed on to the frame of the glasses.
5. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as described in claim 1, it is characterised in that: described the
The first both alignment layers for being pre-configured the aligned liquid crystal layer are provided on one transparent electrode layer, on the second transparency electrode layer
It is provided with the second both alignment layers for being pre-configured the aligned liquid crystal layer；First both alignment layers and the second both alignment layers are using light
Orientation obtains, and the liquid crystal layer uses negative liquid crystal；When double diopter lens are in first state, the negative liquid crystal is
Vertical array；When double diopter lens are in the second state, the negative liquid crystal is along electric field alignment.
6. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as claimed in claim 3, it is characterised in that: described the
The alignment direction of one both alignment layers and the second both alignment layers is along double ametropia lens key light axis directions or first both alignment layers and the
The alignment direction of two both alignment layers is the radial direction along the first eyeglass substrate or the second eyeglass substrate.
7. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as described in claim 1, it is characterised in that: the liquid crystal
Layer is in position LiThicknessThe d0For primary optical axis
Thickness of liquid crystal layer on direction, the θi1It is the first substrate in position LiRadial direction and primary optical axis angle.
8. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as described in claim 1, it is characterised in that: described the
One eyeglass substrate closes on the key light curvature shaft radius r at the third interface of the liquid crystal layer3With the first eyeglass substrate far from institute
State the key light curvature shaft radius r at the 4th interface of liquid crystal layer4It is equal.
9. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as described in claim 1, it is characterised in that: described the
Two eyeglass substrates close on the key light curvature shaft radius r at the 5th interface of the liquid crystal layer5With the second eyeglass substrate far from institute
State the key light curvature shaft radius r at the 6th interface of liquid crystal layer6It is equal.
10. a kind of Zooming method of the Zoom glasses based on liquid crystal lens as described in claim 1, it is characterised in that: described
First eyeglass substrate and the second eyeglass substrate at least one for polishing, and adjust double diopter lens in the first state
First pair of dioptric optical value.
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| CN108845433A (en) * | 2018-07-19 | 2018-11-20 | 三星电子（中国）研发中心 | Intelligent glasses and its control method |
| CN110568648A (en) * | 2019-08-29 | 2019-12-13 | 广东工业大学 | Variable-focus spherical lens structure liquid crystal lens |
| CN114545661A (en) * | 2022-03-08 | 2022-05-27 | 西安建筑科技大学 | Glasses based on ultrasonic ranging dynamic adjustment degree |
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