CN104216195A - Liquid-crystal lens optimization method and system employing same - Google Patents
Liquid-crystal lens optimization method and system employing same Download PDFInfo
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- CN104216195A CN104216195A CN201410446532.8A CN201410446532A CN104216195A CN 104216195 A CN104216195 A CN 104216195A CN 201410446532 A CN201410446532 A CN 201410446532A CN 104216195 A CN104216195 A CN 104216195A
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Abstract
The invention provides a liquid-crystal lens optimization method. The liquid-crystal lens optimization method comprises the steps: providing parallel light, and enabling the parallel light to sequentially pass through a polarizer, a liquid-crystal lens and a polarization detector, so as to obtain an interference light intensity distribution curve of interference light which is generated after the parallel light sequentially passes through the polarizer, the liquid-crystal lens and the polarization detector; comparing the interference light intensity distribution curve with a reference distribution curve; regulating the voltage of an electrode of a location, corresponding to the liquid-crystal lens, according to errors between the interference light intensity distribution curve and the reference distribution curve, so as to regulate the refraction index distribution of the liquid-crystal lens. The invention further provides a liquid-crystal lens optimization system using the liquid-crystal lens optimization method. According to the liquid-crystal lens optimization method and the liquid-crystal lens optimization system, provided by the invention, the refraction index distribution of the liquid-crystal lens is regulated according to the errors between the interference light intensity distribution curve and the reference distribution curve, so that the operation is simple and reliable and is high in accuracy.
Description
Technical field
The present invention relates to a kind of display device, be particularly a kind ofly applicable to the lens optimization method of liquid crystal indicator and use its optimization system.
Background technology
Liquid crystal lens formula naked eye three-dimensional display technique because its structure is simple, be easy to realize two-dimensional/three-dimensional conversion and drive the advantage such as adjustable and be widely used.And the index distribution of liquid crystal lens is one of key factor affecting naked eye three-dimensional display effect, therefore, the refractive index optimizing liquid crystal lens is usually needed, to improve 3-D display effect.
Fig. 1 is the structural representation of liquid crystal lens.As shown in Figure 1, liquid crystal lens 10 comprises infrabasal plate 101, upper substrate 102, bottom electrode 103, top electrode 104, liquid crystal layer 105, frame glue 106.Wherein, bottom electrode 103 be positioned at infrabasal plate 101 towards on a surface of liquid crystal layer 105, top electrode 104 be positioned at upper substrate 102 towards on a surface of liquid crystal layer 105, infrabasal plate 101 and upper substrate 102 are by frame glue 106 be adhesively fixed.
The principle of work schematic diagram of liquid crystal lens 10 when the upper/lower electrode that Fig. 2 a is liquid crystal lens shown in Fig. 1 does not apply voltage.The principle of work schematic diagram of liquid crystal lens 10 during the upper/lower electrode applying voltage that Fig. 2 b is liquid crystal lens shown in Fig. 1.Please refer to Fig. 2 a and Fig. 2 b, when the bottom electrode 103 of liquid crystal lens 10, top electrode 104 do not apply voltage, at bottom electrode 103 and power between level 104 and do not have electric field to be formed, the major axis of liquid crystal molecule is all along being parallel to the planar alignment of upper substrate 101 with infrabasal plate 102, linearly polarized light is after liquid crystal layer 105, all and then can enter the right and left eyes of people before original direction, be now two dimensional mode, under bottom electrode 103 and top electrode 104 are in powering state, electric field is formed between bottom electrode 103 and top electrode 105, the liquid crystal molecule of diverse location is subject to the effect of the electric field force of varying strength respectively, the gradual change arrangement in space of different liquid crystal molecules, its refractive index is made to produce excessive gradual change equally, linearly polarized light reflects after liquid crystal layer 105, form gradual change type refractive index lens, linearly polarized light all changes original direction and advances after liquid crystal layer 105, and the picture making liquid crystal panel (not shown) left and right pixel produce enters the right and left eyes of people respectively, it is now three-dimensional display mode.
The optimization method of current liquid crystal lens, mainly passes judgment on the performance of liquid crystal lens according to the convergence performance of liquid crystal lens to parallel lines polarized light, thus optimizes liquid crystal lens.But be only difficult to judge which regional area liquid crystal molecule of liquid crystal lens needs adjustment from liquid crystal lens convergent effect, which regional area liquid crystal molecule does not need adjustment, therefore the voltage on liquid crystal lens electrode this how to adjust and have no way of doing it, optimize and revise that liquid crystal lens accuracy is not high, reliability is low.In addition, there is the irregular liquid crystal lens of the index distribution of particular/special requirement for some, cannot adjust from the convergence performance of liquid crystal lens.
Therefore, be necessary to provide the technical scheme of improvement to overcome the above technical matters existed in prior art.
Summary of the invention
The main technical problem to be solved in the present invention is to provide a kind of simple, reliable and liquid crystal lens optimization method that accuracy is high.
For solving the problems of the technologies described above, the invention provides a kind of liquid crystal lens optimization method, described liquid crystal lens optimization method comprises: provide a directional light, make described directional light successively through the polarizer, liquid crystal lens and analyzer, and obtain the distribution of interference intensity curve of the interference light that described directional light produces successively after the described polarizer, described liquid crystal lens and described analyzer; Contrast described distribution of interference intensity curve and reference distribution curve; And the voltage of electrode according to the error transfer factor liquid crystal lens correspondence position of described distribution of interference intensity curve and described reference distribution curve, to adjust the index distribution of described liquid crystal lens.
Preferably, described directional light is monochromatic light and is evenly distributed.
Preferably, the described polarizer is parallel with the polarization axle of described analyzer or vertical.
Preferably, the step contrasting described distribution of interference intensity curve and reference distribution curve comprises: obtain described reference distribution curve according to the effective extraordinary refractive index of the ideal of diverse location liquid crystal lens.
Preferably, the step obtaining described reference distribution curve according to the effective extraordinary refractive index of the ideal of diverse location liquid crystal lens comprises: obtain the effective extraordinary refractive index of ideal of liquid crystal molecule, ordinary refractive index, the box gap of liquid crystal lens and the wavelength of described directional light; And obtain reference distribution curve according to the box gap of the effective extraordinary refractive index of the ideal of described liquid crystal molecule, ordinary refractive index, described liquid crystal lens and the wavelength of described directional light.
The present invention also provides a kind of liquid crystal lens optimization system, and this liquid crystal lens optimization system is for adjusting the index distribution of liquid crystal lens, and described liquid crystal lens comprises electrode, and described liquid crystal lens optimization system comprises: optical generator, for generation of directional light; The polarizer, receives the directional light that described optical generator produces, and produces polarized light according to described directional light; Analyzer, lays respectively at the both sides of described liquid crystal lens with the described polarizer, for detecting the polarized light through described analyzer, to produce interference light; And processor, for obtaining distribution of interference intensity curve according to described interference light, and the voltage of electrode according to the error transfer factor liquid crystal lens correspondence position of described distribution of interference intensity curve and reference distribution curve, thus adjust the index distribution of described liquid crystal lens.
Preferably, the described polarizer is parallel with the polarization axle of described analyzer or vertical.
Preferably, described liquid crystal lens optimization system also comprises: storage unit, for storing the ordinary refractive index of the box gap of described liquid crystal lens, the wavelength of described directional light, the effective extraordinary refractive index of ideal of described liquid crystal molecule, described liquid crystal molecule.
Preferably, described processor comprises: semiconductor device, for receiving described interference light, and described interference light is converted to interference electric signal; Computing unit, for calculating the error of described distribution of interference intensity curve and reference distribution curve; Control module, for the voltage of the electrode of the error transfer factor liquid crystal lens correspondence position according to described distribution of interference intensity curve and reference distribution curve, thus adjusts the index distribution of described liquid crystal lens.
Preferably, described liquid crystal lens optimization system also comprises: display device, is electrically connected with described processor, for showing described interference fringe, described distribution of interference intensity curve and described reference distribution curve.
Liquid crystal lens optimization method of the present invention and system are according to the index distribution of the error transfer factor liquid crystal lens of distribution of interference intensity curve and reference distribution curve, simple to operate, reliable and accuracy is high.
By the detailed description below with reference to accompanying drawing, other side of the present invention and feature become obvious.But it should be known that accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present invention, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is the structural representation of liquid crystal lens.
The principle of work schematic diagram of liquid crystal lens when the upper/lower electrode that Fig. 2 a is liquid crystal lens shown in Fig. 1 does not apply voltage.
The principle of work schematic diagram of liquid crystal lens during the upper/lower electrode applying voltage that Fig. 2 b is liquid crystal lens shown in Fig. 1.
Fig. 3 is the schematic flow sheet of the liquid crystal lens optimization method of an embodiment of the present invention.
Fig. 4 is that effective extraordinary refractive index of the liquid crystal lens of an embodiment of the present invention and the relation of liquid crystal lens center relative position simulate schematic diagram.
Fig. 5 a is the principle of work schematic diagram of liquid crystal lens when the polarizer is vertical with the polarization axle of analyzer of an embodiment of the present invention.
Fig. 5 b be another embodiment of the present invention the principle of work schematic diagram of liquid crystal lens when the polarizer is parallel with the polarization axle of analyzer.
Fig. 6 is the reference distribution curve simulation schematic diagram of the liquid crystal lens of an embodiment of the present invention.
Fig. 7 is the liquid crystal lens distribution of interference intensity curve simulation result schematic diagram of an embodiment of the present invention.
Fig. 8 is the module diagram of the liquid crystal lens optimization system of an embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 3 is the schematic flow sheet of the liquid crystal lens optimization method of an embodiment of the present invention.As shown in Figure 3, liquid crystal lens optimization method comprises:
Step S31: first provide a directional light, makes this directional light successively through the polarizer, liquid crystal lens and analyzer, and obtains the distribution of interference intensity curve of the interference light that this directional light produces successively after the polarizer, liquid crystal lens and analyzer;
Step S32: contrast distribution of interference intensity curve and reference distribution curve; And
Step S33: according to the voltage of the electrode of the error transfer factor liquid crystal lens correspondence position of distribution of interference intensity curve and reference distribution curve, to adjust the index distribution of liquid crystal lens.
In an embodiment of the present invention, step S32 comprises:
Reference distribution curve is obtained according to the effective extraordinary refractive index of the ideal of diverse location liquid crystal lens.
Concrete, obtain reference distribution curve according to the effective extraordinary refractive index of the ideal of diverse location liquid crystal lens and comprise: obtain the effective extraordinary refractive index of ideal of liquid crystal molecule, ordinary refractive index, the box gap of liquid crystal lens and the wavelength of directional light; And
Reference distribution curve is obtained according to the box gap of the effective extraordinary refractive index of the ideal of liquid crystal molecule, ordinary refractive index, liquid crystal lens and the wavelength of directional light.
In an embodiment of the present invention, directional light is monochromatic light and is evenly distributed.The polarizer is parallel with the polarization axle of analyzer or vertical.
Fig. 4 is that effective extraordinary refractive index of perfect condition of liquid crystal lens in the present invention and the relation of the relative position of liquid crystal molecule simulate schematic diagram.As shown in Figure 4, the effective extraordinary refractive index neff (θ) of ideal of liquid crystal lens and the relative position relation of liquid crystal molecule are that quafric curve distributes, and the relative position of liquid crystal molecule herein refers to liquid crystal molecule relative distance relative to the central point O of liquid crystal lens 1 in X-direction (please refer to Fig. 5 a or Fig. 5 b).
Fig. 5 a is the principle of work schematic diagram of liquid crystal lens 1 when the polarizer 2 is vertical with the polarization axle of analyzer 3 of an embodiment of the present invention.As shown in Figure 5 a, liquid crystal lens 1 comprises infrabasal plate 101, upper substrate 102, liquid crystal molecule 105 and top electrode (not shown) and bottom electrode (not shown), and the polarizer 2 and analyzer 3 lay respectively at the both sides of liquid crystal lens 1.Wherein, the polarizer 2, analyzer 3 are parallel to each other with the infrabasal plate 101 in liquid crystal lens 1, upper substrate 102.The polarization axle E1 of the polarizer 2 is vertical with the polarization axle E2 of analyzer 3.Wherein O point is positioned at the center of liquid crystal lens 1, and XOY plane parallels with the infrabasal plate 101 in liquid crystal lens 1, upper substrate 102, and Z-direction is perpendicular to the plane at liquid crystal lens 1 place.
Liquid crystal molecule 105 alignment direction of liquid crystal lens 1 is along Y direction, and a branch of light intensity is I
0and the directional light be evenly distributed is after the linearly polarized light E1 that the polarizer 2 produces is irradiated to liquid crystal lens 1, linearly polarized light E1 can be analyzed to linearly polarized light Ex and linearly polarized light Ey.Because liquid crystal molecule 105 couples of linearly polarized light Ex are different with the refractive index of linearly polarized light Ey, so linearly polarized light Ex and linearly polarized light Ey is designated as Ex ' and Ey ' respectively after liquid crystal molecule 105, linearly polarized light Ex ' and linearly polarized light Ey ' is again through analyzer 3, after the polarization axle E2 direction of analyzer 3 through component meet coherent condition, produce interfere.
If the direction of propagation of directional light is along Z-direction, plane of polarization is E1OZ plane, the optical axis 151 of liquid crystal molecule 105 all the time at YOZ rotation with in surface, in the direction along X-axis, such as, when the value of X is X
θ, namely relative to the relative distance of the central point O of liquid crystal lens 1 be in the X direction | X
θ| the optical axis 151 of the liquid crystal molecule 105 at place is θ with the average angle of Y-axis, then effective extraordinary refractive index neff (θ) of liquid crystal lens 1 meets:
1/neff(θ)
2＝cos
2θ/ne+sin
2θ/no
Wherein, ne is the extraordinary refractive index of liquid crystal material, and no is the ordinary refractive index of liquid crystal material.
As shown in Figure 5 a, the polarization axle E1 of the polarizer 2 is vertical with the polarization axle E2 of analyzer 3, therefore, is met by the interference light intensity after analyzer 3:
T＝I/Io＝sin
2(2β)*sin
2(π*Δn*d/λ)/2
Wherein, β is the angle of the polarizer 2 polarization axle E1 and Y-axis, Δ n=neff (θ)-no, I be by analyzer 3 after the light intensity of directional light, Io is the light intensity of the directional light that the polarizer 2 receives, and d is the box gap of liquid crystal lens, and λ is the wavelength of the light that the polarizer 2 receives.
Such as, when β=45 degree, that is, when the bright dark difference of interference fringe is the most obvious, met by the interference light intensity after analyzer 3:
T＝I/Io＝sin
2(π*Δn*d/λ)/2
Wherein, Δ n=neff (θ)-no, I are the light intensity that the polarizer 2 receives, Io be by analyzer 3 after light intensity, d is the box gap of liquid crystal lens, and λ is the wavelength of directional light that the polarizer 2 receives.
Therefore, can according to effective extraordinary refractive index neff (θ) acquisition of the ideal of diverse location liquid crystal lens 1 reference distribution curve as shown in Figure 6 by above-mentioned formula.
Fig. 5 b is the principle of work schematic diagram of liquid crystal lens 1 when the polarizer 2 is parallel with the polarization axle of analyzer 3 of another embodiment of the present invention.As shown in Figure 5 b, the polarization axle E1 of the polarizer 2 is parallel with the polarization axle E2 of analyzer 3, therefore, is met by the interference light intensity after analyzer 3:
T＝I/Io＝1－[sin
2(2β)*sin
2(π*Δn*d/λ)/2]
Wherein, β is the polarization axle E1 of the polarizer 2 and the angle of Y-axis, Δ n=neff (θ)-no, I be by analyzer 3 after the light intensity of directional light, Io is the light intensity of the directional light that the polarizer 2 receives, and d is the box gap of liquid crystal lens, and λ is the wavelength of the light that the polarizer 2 receives.
Such as, when β=45 degree, that is, when the bright dark difference of interference fringe is the most obvious, met by the interference light intensity after analyzer 3:
T＝I/I0＝1－[sin
2(π*Δn*d/λ)/2]
Wherein, Δ n=neff (θ)-no, I are the light intensity by directional light after analyzer 3, and Io is the light intensity of the directional light that the polarizer 2 receives, and d is the box gap of liquid crystal lens, and λ is the wavelength of the directional light that the polarizer 2 receives.
Therefore, equally can according to effective extraordinary refractive index neff (θ) acquisition of the ideal of diverse location liquid crystal lens 1 reference distribution curve as shown in Figure 6 by above-mentioned formula.
Fig. 6 is the reference distribution curve simulation schematic diagram of the ideally interference light intensity of liquid crystal lens in embodiment of the present invention.According to the reference distribution curve that the effective extraordinary refractive index neff (θ) of the ideal of liquid crystal molecule and the relative position of liquid crystal molecule and the relation of interference light intensity can obtain as shown in Figure 6, the relative position of liquid crystal molecule herein refers to liquid crystal molecule in the X direction relative to the relative distance of the central point O of liquid crystal lens 1.
Fig. 7 is the liquid crystal lens distribution of interference intensity curve simulation result schematic diagram of an embodiment of the present invention.The present invention by semiconductor device as photoelectronic imaging device (CCD) etc. obtain as shown in Figure 7 by directional light successively through the polarizer, the distribution of interference intensity curve simulation result schematic diagram of the interference light of each liquid crystal molecule relative position produced after liquid crystal lens and analyzer, at this, the interference light intensity of the interference light of each liquid crystal molecule relative position of liquid crystal lens can regulate by regulating the electrode voltage of this relative position, the present invention is by the voltage of the electrode of the error transfer factor liquid crystal lens correspondence position of the reference distribution curve ideally shown in the distribution of interference intensity curve shown in comparison chart 7 and Fig. 6, to adjust the index distribution of liquid crystal lens.
Fig. 8 is the module diagram of the liquid crystal lens optimization system of an embodiment of the present invention.A kind of liquid crystal lens optimization system 10, liquid crystal lens optimization system 10 comprises the polarizer 2, analyzer 3, optical generator 4 and processor 5.Optical generator 4, for generation of directional light.The polarizer 2 receives the directional light that optical generator 4 produces, and produces polarized light according to directional light.During work, be arranged at by the liquid crystal lens of required optimization between the polarizer 2 and analyzer 3, analyzer 3 and the polarizer 2 lay respectively at the both sides of the liquid crystal lens that will optimize.Analyzer 3 is for generation of interference light.Processor 5 is for obtaining distribution of interference intensity curve according to interference light, and the voltage of the electrode of the liquid crystal lens correspondence position will optimized according to the error transfer factor of distribution of interference intensity curve and reference distribution curve, thus adjust the light distribution of the liquid crystal lens that this will be optimized.
Wherein, the polarizer 2 is parallel with the polarization axle of analyzer 3 or vertical.Directional light is monochromatic light and is evenly distributed.
In an embodiment of the present invention, liquid crystal lens optimization system 10 also comprises storage unit.Storage unit is for storing the box gap of liquid crystal lens 1, the wavelength of directional light, the effective extraordinary refractive index of ideal of liquid crystal molecule, the ordinary refractive index of liquid crystal molecule.
In an embodiment of the present invention, processor 5 comprises semiconductor device, computing unit, control module.Interference light for receiving interference light, and is converted to interference electric signal by semiconductor device.Computing unit is for calculating the error of distribution of interference intensity curve and reference distribution curve.Control module is used for the voltage of the electrode of the liquid crystal lens correspondence position will optimized according to the error transfer factor of distribution of interference intensity curve and reference distribution curve, thus adjusts the index distribution of liquid crystal lens 1.
In an embodiment of the present invention, semiconductor device comprises photoelectronic imaging device (CCD).
In an embodiment of the present invention, liquid crystal lens optimization system 10 also comprises display device.Display device is electrically connected with processor 5, for showing interference fringe, distribution of interference intensity curve and reference distribution curve.
The voltage of the electrode of the liquid crystal lens correspondence position that liquid crystal lens optimization method of the present invention and liquid crystal lens optimization system 10 will be optimized according to the error transfer factor of distribution of interference intensity curve and reference distribution curve, thus adjust the index distribution of liquid crystal lens that will optimize, simple to operate, reliably and accuracy is high.
Apply the embodiment of specific case to lens optimization system of the present invention and method in the present invention to set forth, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to sum up, this description should not be construed as limitation of the present invention.
Claims (10)
1. liquid crystal lens optimization method, is characterized in that, described liquid crystal lens optimization method comprises:
One directional light is provided, makes described directional light successively through the polarizer, liquid crystal lens and analyzer, and obtain the distribution of interference intensity curve of the interference light that described directional light produces successively after the described polarizer, described liquid crystal lens and described analyzer;
Contrast described distribution of interference intensity curve and reference distribution curve; And
According to the voltage of the electrode of the error transfer factor liquid crystal lens correspondence position of described distribution of interference intensity curve and described reference distribution curve, to adjust the index distribution of described liquid crystal lens.
2. liquid crystal lens optimization method as claimed in claim 1, it is characterized in that, described directional light is monochromatic light and is evenly distributed.
3. liquid crystal lens optimization method as claimed in claim 2, it is characterized in that, the described polarizer is parallel with the polarization axle of described analyzer or vertical.
4. liquid crystal lens optimization method as claimed in claim 1, it is characterized in that, the step contrasting described distribution of interference intensity curve and reference distribution curve comprises:
Described reference distribution curve is obtained according to the effective extraordinary refractive index of the ideal of diverse location liquid crystal lens.
5. liquid crystal lens optimization method as claimed in claim 4, it is characterized in that, the step obtaining described reference distribution curve according to the effective extraordinary refractive index of the ideal of diverse location liquid crystal lens comprises:
Obtain the effective extraordinary refractive index of ideal of liquid crystal molecule, ordinary refractive index, the box gap of liquid crystal lens and the wavelength of described directional light; And
Reference distribution curve is obtained according to the box gap of the effective extraordinary refractive index of the ideal of described liquid crystal molecule, ordinary refractive index, described liquid crystal lens and the wavelength of described directional light.
6. a liquid crystal lens optimization system, for adjusting the index distribution of liquid crystal lens, described liquid crystal lens comprises electrode, it is characterized in that, described liquid crystal lens optimization system comprises:
Optical generator, for generation of directional light;
The polarizer, receives the directional light that described optical generator produces, and produces polarized light according to described directional light;
Analyzer, lays respectively at the both sides of described liquid crystal lens with the described polarizer, for detecting the polarized light through described analyzer, to produce interference light; And
Processor, for obtaining distribution of interference intensity curve according to described interference light, and the voltage of electrode according to the error transfer factor liquid crystal lens correspondence position of described distribution of interference intensity curve and reference distribution curve, thus adjust the index distribution of described liquid crystal lens.
7. liquid crystal lens optimization system as claimed in claim 6, it is characterized in that, the described polarizer is parallel with the polarization axle of described analyzer or vertical.
8. liquid crystal lens optimization system as claimed in claim 6, it is characterized in that, described liquid crystal lens optimization system also comprises:
Storage unit, for storing the ordinary refractive index of the box gap of described liquid crystal lens, the wavelength of described directional light, the effective extraordinary refractive index of ideal of described liquid crystal molecule, described liquid crystal molecule.
9. liquid crystal lens optimization system as claimed in claim 6, it is characterized in that, described processor comprises:
Semiconductor device, for receiving described interference light, and is converted to interference electric signal by described interference light;
Computing unit, for calculating the error of described distribution of interference intensity curve and reference distribution curve;
Control module, for the voltage of the electrode of the error transfer factor liquid crystal lens correspondence position according to described distribution of interference intensity curve and reference distribution curve, thus adjusts the index distribution of described liquid crystal lens.
10. liquid crystal lens optimization system as claimed in claim 6, it is characterized in that, described liquid crystal lens optimization system also comprises:
Display device, is electrically connected with described processor, for showing described interference fringe, described distribution of interference intensity curve and described reference distribution curve.
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| CN107085338A (en) * | 2017-05-25 | 2017-08-22 | 菏泽学院 | A kind of adaptive adjustment method of blue phase liquid crystal lenticule and its system used |
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