CN204188924U - A kind of graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip - Google Patents
A kind of graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip Download PDFInfo
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- CN204188924U CN204188924U CN201420621298.3U CN201420621298U CN204188924U CN 204188924 U CN204188924 U CN 204188924U CN 201420621298 U CN201420621298 U CN 201420621298U CN 204188924 U CN204188924 U CN 204188924U
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Abstract
The utility model discloses a kind of graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip, comprise array control light framework, first drives control signal input port and second drives control signal input port, the first substrate is provided with in turn between the levels of array control light framework, micro-circle hole shape patterned Graphene electrodes, first liquid crystal alignment layer, first liquid crystal layer, second liquid crystal alignment layer, Graphene is ground electrode altogether, second substrate, 3rd liquid crystal alignment layer, second liquid crystal layer, 4th liquid crystal alignment layer, micro-annulus hole shape patterned Graphene electrodes, 3rd substrate, micro-circle hole shape patterned Graphene electrodes, Graphene altogether ground electrode and micro-annulus hole shape patterned Graphene electrodes is separately fixed on the first to the 3rd substrate, micro-circle hole shape patterned Graphene electrodes and micro-annulus hole shape patterned Graphene electrodes comprise m × n micro-circular hole and micro-annulus hole respectively.The utility model optical beam transformation usefulness is high, easy and normal optical photoelectric mechanical structure Coupling, good environmental adaptability.
Description
Technical field
The utility model belongs to optical precision measurement and control technology field, more specifically, relates to a kind of graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip.
background technology
Up to now, the optical system of light convergent type and light divergence form lens is mated based on Mechanical Moving mode, can effectively realize dynamic optical wave conversion and adjustable allosteric builds the functions such as imaging detection light field, its characteristic feature main manifestations in the following areas: (one) modulation light pack parameter comprises burnt long, point spread function and depth of focus; (2) increase or reduction project light-sensitive array as the intensity of illumination distribution on the photoelectric sensing equipment light receiving surfaces such as typical CCD, CMOS or FPAs, improve the irradiation scope of application of light-sensitive array, environmental suitability and radiometric resolution; (3) effectively improve illumination uniformity on focal plane and the photosensitive interregional light irradiation difference of typical case by modulation incident field, improve homogeneity and the contrast of view data; (4) by changing the photosensitive visual field of photosensitive unit, the signal to noise ratio (S/N ratio) of modulation light-sensitive array, signal to noise ratio and imaging detection visual field, improve anti-interference and adaptive capacity to environment; (5) coupled light beam is dispersed and is significantly reduced aberration and aberration etc. with aggregation feature.By Continuous optimization and the optics physical property strengthening lens material, expansion lens contoured surface shape machining precision, improve the coupling usefulness between lens, strengthen electromechanics and drive the measures such as control, coordination and executive capability, the dynamic adaptable of continuous enhancing optical system, reduce volume mass power consumption, improve electric light and photoelectric response and change usefulness, and reduce costs and use complicacy.
In the last few years, have can the application of electronic mechanical optical system of modulation ability in continuous expansion with extend, to be converged by the conventional light that is coupled and light divergent lens carries out functionalization light wave to convert the defect of this mode also outstanding day by day, main reflection is in the following areas: (one) because of the optical lens of fixing topographical profiles presents can not the wave beam ability to transform of modulation, only build specific bundle pattern by adjustment lenticular spacing and luminous energy transports form and carries out modulation operation; (2) change lens position shape by mechanical motion to need to launch according to particular order, greatly and need to mate complicated driving-controlling device, the intrinsic continuity because of motion cannot perform the incision of arbitrary optical states or saltus step for low-response, length consuming time, inertia; (3) be difficult to be coupled in flexible access light path or with other optical photoconductor mechanical hook-ups; (4) cannot based on modern microelectronic and photoelectron technique, functionalization optical beam transformation is carried out towards the such as light-sensitive array such as CCD, CMOS or FPAs, optical photoconductor Integral imaging on the basis such as perform management and control wavefront, wave spectrum, wave vector, polarization and can flow detects framework structure, and carries out chip transformation.
At present, electrically-controlled liquid crystal micro lens technology development based on metal electrode microcavity framework is rapid, light converge and light to disperse etc. mode the automatically controlled structure of independence, change with integrated etc. in illustrate fabulous application and development prospect, provide new approaches for solving the problem.The major function possessed at present comprises: (one) drives control micron order thickness liquid crystal material based on patterned electrodes, and can to become more meticulous automatically controlled convergence or disperse process to light wave, focusing length, focal spot size, depth of focus and visual field etc. carry out operating by modulation; (2) the light field structure of liquid crystal microlens can in the automatically controlled expansion in arbitrary optical states place or saltus step; (3) according to priori or optical beam transformation feature, lenticular powering order can be retrained, intervenes or guided; (4) liquid crystal microlens of frivolous and planar end, can be integrated into flexibly dexterous automatically controlled optics framework to insert in light path or by further integrated enter in light-sensitive array.At present, how based on Graphene technology, liquid crystal microlens to be upgraded, the electronics utilizing two-dimensional nano-graphene material splendid, optics, Wave Spectrum and structure attribute, development optical property is more excellent, the life-span is longer, spectrum adaptability is wider, electric light drives the stronger and eco-friendly electrically-controlled liquid crystal micro lens technology of control usefulness, become and continued to promote optics wave beam precision measurement and control technology and obtain the rare opportunity that sustained and rapid development faces, in the urgent need to new breakthrough.
utility model content
For above defect or the Improvement requirement of prior art; the utility model provides a kind of graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip; it can realize array and converge the automatically controlled meticulous extension of its burnt long and depth of focus of light wave, the convergence automatically controlled conversion of Diverging mode, the meticulous automatically controlled modulation of light degree of divergence and the automatically controlled expansion of its form mobility scale of transmission wavefront etc.; easily be coupled with other optical photoconductor physical construction, good environmental adaptability.
For achieving the above object, according to an aspect of the present utility model, provide a kind of graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip, comprise array control light framework, first drives control signal input port and second drives control signal input port, array control light framework adopts double-decker, the first substrate is provided with in turn between levels, micro-circle hole shape patterned Graphene electrodes, first liquid crystal alignment layer, first liquid crystal layer, second liquid crystal alignment layer, Graphene is ground electrode altogether, second substrate, 3rd liquid crystal alignment layer, second liquid crystal layer, 4th liquid crystal alignment layer, micro-annulus hole shape patterned Graphene electrodes, 3rd substrate, micro-circle hole shape patterned Graphene electrodes, Graphene altogether ground electrode and micro-annulus hole shape patterned Graphene electrodes is separately fixed on the first to the 3rd substrate, micro-circle hole shape patterned Graphene electrodes and micro-annulus hole shape patterned Graphene electrodes comprise m × n micro-circular hole and micro-annulus hole respectively, wherein m, n is the integer being greater than 1, and each micro-circular hole and each micro-annulus hole have identical center line respectively, a metal electrode lead-in wire is extended respectively from micro-circle hole shape patterned Graphene electrodes and micro-annulus hole shape patterned Graphene electrodes, and access first drive control signal input port and second drive control signal input port one end, be total to ground electrode from Graphene and extend two metal electrodes lead-in wires respectively, and access first drive control signal input port and second drive control signal input port the other end, first drives control signal input port and second drives the liquid crystal optically focused lenticule that control signal input port forms to the common ground electrode of micro-circle hole shape patterned electrodes and Graphene and provides the first electricity to drive control signal, first drives control signal input port and second drives the liquid crystal astigmatism lenticule that control signal input port forms to the common ground electrode of micro-annulus hole shape patterned Graphene electrodes and Graphene and provides the second electricity to drive control signal.
Preferably, liquid crystal optically focused lenticule and liquid crystal astigmatism lenticule have same array scale and the coincidence that projects.
Preferably, after light beam enters array control light framework, turned to sub-incident wave beam battle array by discrete.First each sub-incident wave beam encourages the lower liquid crystal optically focused lenticule the formed pack that interacted to operate with controlled electrical field, and then enter in the lower liquid crystal astigmatism lenticule formed of controlled electrical field excitation, dispersed further and formed transmission wave field after coupling and exported from chip.
Preferably; described graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip also comprises chip housing; array control light framework is positioned at chip housing and is connected with it; the light entrance face of array control light framework and light-emitting face are windowed out exposed by the end face of chip housing and bottom surface; first drives control signal input port and second drives control signal input port and is arranged on chip housing, and outside exposed by the lateral opening hole of chip housing.
Preferably, on the light entrance face and light-emitting face of the first substrate and the 3rd substrate, the optical anti-reflective film system of material of the same race is respectively arranged with.
Preferably, first to fourth liquid crystal alignment layer is made by polyimide.
Preferably, the first to the 3rd substrate is made by the optical material of material of the same race.
In general, the above technical scheme conceived by the utility model compared with prior art, can obtain following beneficial effect:
1, the burnt Diode laser of automatically controlled extension beam spot: by regulating the voltage signal be carried on liquid crystal astigmatism lenticule, carry out meticulous micro-ly dispersing process to the beam spot sent by optically focused lenticule, there is the advantage of the automatically controlled meticulous extension realizing the long and depth of focus of beam spot Jiao.
2, coupling is driven control signal and is realized MODAL TRANSFORMATION OF A: except realizing except MODAL TRANSFORMATION OF A by power-off closedown liquid crystal astigmatism or optically focused lenticule, MODAL TRANSFORMATION OF A can also be realized, the extended device scope of application by the coupling voltage signal be carried on liquid crystal optically focused and astigmatism lenticule.
3, meticulous electric harmonic misconvergence of beams state: be carried in the voltage signal on liquid crystal optically focused lenticule by meticulous modulation, possess the control mode that coarse adjustment is combined with accurate adjustment.
4, intelligent: be carried in the two-way electric signal on liquid crystal microlens by modulation, the modulation operation carried out beam configuration in constraint, the intervention of priori or result or can launch under guiding, and has intelligent feature.
5, control accuracy is high: by mating the two-way voltage signal be carried in respectively on liquid crystal optically focused and astigmatism lenticule, can carry out minute adjustment, have the advantage that control accuracy is high to the optical parametric of chip.
6, easy to use: control light main body of the present utility model is the array control light framework be encapsulated in chip, configure conveniently in the optical path, easily mate with normal optical photoelectric mechanical structure etc. and be coupled.
accompanying drawing explanation
Fig. 1 is the structural representation of graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip of the present utility model;
Fig. 2 is array control light configuration diagram of the present utility model;
Fig. 3 is the optical beam transformation schematic diagram of array control light framework of the present utility model.
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
1-drives control signal input port, and 2-drives control signal input port, 3-array control light framework, 4-chip housing.
embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each embodiment of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Figure 1, graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip of the present utility model comprises: chip housing 4 and the array control light framework 3 built by graphene-based bimodulus (optically focused, astigmatism) electrically-controlled liquid crystal lenticule hybrid integrated.
Array control light framework 3 is positioned at chip housing 4 and is connected with it.
The light entrance face of array control light framework 3 and light-emitting face are windowed out exposed by the end face of chip housing 4 and bottom surface.
Graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip is m × n unit, and wherein, m, n are the integer being greater than 1.The Graphene public electrode of liquid crystal optically focused lenticule and liquid crystal astigmatism microlens array is interconnected, and each unit Graphene micro-circular hole patterned electrodes in single mode liquid crystal microlens array and micro-annulus patterned electrodes are all synchronously powered up.
After light beam enters the array control light framework in chip, turned to sub-incident wave beam battle array according to lenticular scale and arrangement situation by discrete.First each sub-incident wave beam encourages the lower optically focused state liquid crystal structure the formed pack that interacted to operate with controlled electrical field, and then enter in the astigmatism state liquid crystal structure that formed under controlled electrical field excitation, dispersed further and form transmission wave field and export from chip after coupling.The convergence of transmission wave field or degree of divergence, by the two-way voltage signal Collaborative Control be carried in respectively on liquid crystal optically focused and astigmatism microlens array.
Chip housing 4 is provided with first to drive control signal input port 1 and second and drive control signal input port 2, it is outside exposed by lateral opening hole of chip housing 4.
As shown in Figure 2, array control light framework of the present utility model adopts the double-decker of liquid crystal optically focused microlens array and the upper and lower superposed type of liquid crystal astigmatism microlens array, is provided with the first substrate, micro-circle hole shape patterned Graphene electrodes, the first liquid crystal alignment layer, the first liquid crystal layer, the second liquid crystal alignment layer, Graphene ground electrode, the second substrate, the 3rd liquid crystal alignment layer, the second liquid crystal layer, the 4th liquid crystal alignment layer, micro-annulus hole shape patterned Graphene electrodes, the 3rd substrate altogether between levels in turn.
Micro-circle hole shape patterned Graphene electrodes, Graphene altogether ground electrode and micro-annulus hole shape patterned Graphene electrodes are separately fixed on the first to the 3rd substrate.
First to fourth liquid crystal alignment layer is made by polyimide, but should understand alignment layer material and be not limited thereto, and also can be that other can form the channel material of the nanoscale degree of depth and width.
First and second liquid crystal layers have same material and thickness.
First to the 3rd substrate is made by the optical material of material of the same race.
Micro-circle hole shape patterned Graphene electrodes and micro-annulus hole shape patterned Graphene electrodes comprise m × n micro-circular hole and micro-annulus hole respectively, and wherein, m, n are the integer being greater than 1, and each micro-circular hole and each micro-annulus hole have identical center line respectively.
Each unit liquid crystal structure in single mode microlens array all has identical patterns form, as the Graphene electrodes of micro-circle hole shape or micro-annulus hole shape and Graphene altogether ground electrode form and control optoelectronic pole pair.Be total to ground electrode by micro-circle hole shape patterned electrodes and Graphene and form liquid crystal optically focused lenticule, micro-annulus hole shape patterned Graphene electrodes and Graphene altogether ground electrode form liquid crystal astigmatism lenticule, and the two has same array scale and the coincidence that can project.
Micro-circle hole shape patterned Graphene electrodes, micro-annulus hole shape patterned Graphene electrodes and Graphene altogether ground electrode are made by the graphene film of identical material.From micro-circle hole shape patterned Graphene electrodes and micro-annulus hole shape patterned Graphene electrodes, extend metal electrode lead-in wire respectively, and access first and drive one end that control signal input port 1 and second drives control signal input port 2.From Graphene altogether ground electrode extend two metal electrodes lead-in wires respectively, and access first and drive the other end that control signal input port 1 and second drives control signal input port 2.
As shown in Figure 3; array control light framework in graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip of the present utility model is respectively by liquid crystal optically focused lenticule and liquid crystal astigmatism lenticule; to incident wave beam perform can modulation tandem type light converge and light disperse operation; final formation can be converged or degree of divergence by meticulous modulation, and can complete the Transmission field of converge and diverge MODAL TRANSFORMATION OF A.Its Graphene electrodes of each first lenticule in single mode liquid crystal microlens array, to synchronously being powered up, is carried in liquid crystal optically focused and the lenticular Graphene electrodes of astigmatism respectively and drives control signal V to upper electricity as illustrated
1and V
2deng.The partial structurtes feature of typical low-light hole paroxysm astigmatism field and low-light dot matrix convergence light field is give also in figure.
For making those skilled in the art understand the utility model better, the principle of work of the graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip of the utility model embodiment is described below in conjunction with Fig. 1 to Fig. 3.
Graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip is placed in optical system for testing, or the focal plane place being placed in the optical system be made up of primary mirror also can weak out of focus configuration.
First two signal wires are accessed respectively first drive control signal input port and second drive control signal input port, by voltage signal input be carried on graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip.
After light wave enters the graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip in chip; build under encouraging with controlled electrical field, the functionalization cascade liquid crystal structure with specific refractive index space distribution form interacts and converges in array or disperse state.From the transmission wave beam of chip outgoing, it converges or degree of divergence and wavefront, and the configuring condition driving control signal by two-way retrains.By specific convergence wave beam is performed further can modulation disperse operation, can complete beam spot it is burnt long, the finely regulating of depth of focus and wavefront, and converges to the conversion of Diverging mode.By to pack ripple perform can modulation convergence operation, the finely regulating before its divergence of divergence expression transmission wave beam and divergent wave can be completed.
Electrically-controlled liquid crystal lenticule comprises liquid crystal material, liquid crystal initial orientation layer, Graphene electrodes and metal electrode lead-in wire, substrate and optical anti-reflective film.Two surfaces up and down of liquid crystal material cover liquid crystal alignment layer, Graphene electrodes, substrate and optical anti-reflective film system successively.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip, comprise array control light framework, first drive control signal input port and second drive control signal input port, it is characterized in that,
Array control light framework adopts double-decker, is provided with the first substrate, micro-circle hole shape patterned Graphene electrodes, the first liquid crystal alignment layer, the first liquid crystal layer, the second liquid crystal alignment layer, Graphene ground electrode, the second substrate, the 3rd liquid crystal alignment layer, the second liquid crystal layer, the 4th liquid crystal alignment layer, micro-annulus hole shape patterned Graphene electrodes, the 3rd substrate altogether between levels in turn;
Micro-circle hole shape patterned Graphene electrodes, Graphene altogether ground electrode and micro-annulus hole shape patterned Graphene electrodes are separately fixed on the first to the 3rd substrate;
Micro-circle hole shape patterned Graphene electrodes and micro-annulus hole shape patterned Graphene electrodes comprise m × n micro-circular hole and micro-annulus hole respectively, and wherein m, n are the integer being greater than 1, and each micro-circular hole and each micro-annulus hole have identical center line respectively;
From micro-circle hole shape patterned Graphene electrodes and micro-annulus hole shape patterned Graphene electrodes, extend metal electrode lead-in wire respectively, and access first and drive one end that control signal input port and second drives control signal input port;
From Graphene altogether ground electrode extend two metal electrodes lead-in wires respectively, and access first and drive the other end that control signal input port and second drives control signal input port;
First drives control signal input port and second drives control signal input port and provides the first electricity to drive control signal to micro-circle hole shape patterned electrodes and the Graphene liquid crystal optically focused lenticule that ground electrode is formed altogether, and first drives control signal input port and second drives and control signal input port and be total to micro-annulus hole shape patterned Graphene electrodes and Graphene the liquid crystal astigmatism lenticule that ground electrode forms and provide the second electricity to drive control signal.
2. graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip according to claim 1, it is characterized in that, liquid crystal optically focused lenticule and liquid crystal astigmatism lenticule have same array scale and the coincidence that projects.
3. graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip according to claim 2; it is characterized in that; after light beam enters array control light framework; sub-incident wave beam battle array is turned to by discrete; first each sub-incident wave beam encourages the lower liquid crystal optically focused lenticule the formed pack that interacted to operate with controlled electrical field; and then enter in the lower liquid crystal astigmatism lenticule formed of controlled electrical field excitation, dispersed further and formed transmission wave field after coupling and exported from chip.
4. graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip according to claim 1, is characterized in that,
Described graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip also comprises chip housing;
Array control light framework is positioned at chip housing and is connected with it;
The light entrance face of array control light framework and light-emitting face are windowed out exposed by the end face of chip housing and bottom surface;
First drives control signal input port and second drives control signal input port and is arranged on chip housing, and outside exposed by the lateral opening hole of chip housing.
5. graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip according to claim 1, is characterized in that, on the light entrance face and light-emitting face of the first substrate and the 3rd substrate, is respectively arranged with the optical anti-reflective film system of material of the same race.
6. graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip according to claim 1, it is characterized in that, first to fourth liquid crystal alignment layer is made by polyimide.
7. graphene-based bimodulus hybrid integrated electrically-controlled liquid crystal microlens array chip according to claim 1, it is characterized in that, the first to the 3rd substrate is made by the optical material of material of the same race.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104298022B (en) * | 2014-10-24 | 2017-02-01 | 华中科技大学 | Graphene-based double-mold hybrid integrated electronic control liquid crystal micro lens array chip |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104298022B (en) * | 2014-10-24 | 2017-02-01 | 华中科技大学 | Graphene-based double-mold hybrid integrated electronic control liquid crystal micro lens array chip |
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