CN204188925U - A kind of graphene-based electrically-controlled liquid crystal light converges microlens array chip - Google Patents
A kind of graphene-based electrically-controlled liquid crystal light converges microlens array chip Download PDFInfo
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- CN204188925U CN204188925U CN201420621472.4U CN201420621472U CN204188925U CN 204188925 U CN204188925 U CN 204188925U CN 201420621472 U CN201420621472 U CN 201420621472U CN 204188925 U CN204188925 U CN 204188925U
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Abstract
The utility model discloses a kind of graphene-based electrically-controlled liquid crystal light and converge microlens array chip, comprise: Graphene liquid crystal optically focused microlens array, and drive control signal input port, Graphene liquid crystal optically focused microlens array is m × n unit, Graphene liquid crystal optically focused microlens array adopts sandwich construction, and under at the middle and upper levels between be provided with the first substrate in turn, first liquid crystal alignment layer, liquid crystal layer, second liquid crystal alignment layer, patterned Graphene electrodes layer, Graphene electrodes layer, second substrate, patterned Graphene electrodes layer is made up of the Graphene circular hole that m × n is evenly arranged, extend a chromosome patterning contact conductor from patterned Graphene electrodes layer and access the one end of driving control signal input port, extend another root contact conductor from Graphene electrodes layer and access the other end driving control signal input port.The utility model compact conformation is firm, and electricity drives control ability by force, and control accuracy is high, easily with conventional infrared optics photoelectric mechanical structure Coupling, and good environmental adaptability.
Description
Technical field
The utility model belongs to the precision measurement of optics wave beam and control technology field, more specifically, relates to a kind of graphene-based electrically-controlled liquid crystal light and converges microlens array chip.
Background technology
Graphene is a kind of by the two dimensional crystal of carbon atom tightly packed formation in a hexagonal manner, be up to now the mankind the material that obtainable intensity is the highest, toughness is best, weight is the lightest, transmittance is the highest, electric conductivity is best.Its characteristic feature comprises: (one) has superpower electric conductivity, and charge carrier almost can freely be walked in Graphene; (2) there is superelevation transmittance, generally only absorb the visible ray and the infrared waves that are no more than 3%; (3) have super large electron mobility, at room temperature transmit the speed of electronics far faster than various conductive materials known at present, electronic movement velocity can reach 1/300 of the light velocity the soonest; (4) structure is very firmly stable, has extra-strong corrosion resistant ability, and the hexagonal network between carbon atom connects makes it very pliable and tough again; (5) antistatic effect is extremely strong, can not be scattered when electronics moves in Graphene track because of lattice imperfection, introducing foreign atom or electric field; (6) fabulous structure matching and coupling, be easily coupled with most of optics known at present and microelectronic material and form two-dimensional surface shape functionalization structure.Making based on grapheme material can the electrode structure of covering visible light and infrared spectral coverage, realizes this technical approach of single-chip integrated treatment of visible ray and infrared band electromagnetic beam, has been subject to extensive concern and attention at present.
The membrane electrode material that present stage extensively adopts generally is divided according to visible ray and infrared spectral domain.At infrared spectral domain according to function and application situation, be often subdivided into again near infrared (1 ~ 3 μm), in infrared (3 ~ 5 μm) and these three typical spectral coverages of far infrared (8 ~ 14 μm).Different spectral domains or spectral coverage all require the electrode material adapted, and as often adopted ITO (tin indium oxide) membrane material at visible ray spectral domain, infrared spectral domain often adopts aluminium film or golden membrane material etc.Its typical defect main manifestations is in the following areas: the theoretical transmission of (one) electromagnetic beam is generally below 86%, even lower for some special applications; (2) compose transmitance and there is unevenness, even can decay to the over half of adjacent wave spectrum in the spectrum transmitance at some optical frequency place; (3) electronics in metal electrode material or kation penetrate in the actuating medium as liquid crystal etc. sometimes, and the performance of actuating medium can be caused to reduce even afunction, thus reduce parameter index and serious curtailment device lifetime of device; (4) bend resistance due to metal film is limited in one's ability, is difficult to stablize firmly be coupled or bonding between metal with Inorganic Non-metallic Materials, usually cannot make cheap long-acting bent electrode structure; (5) there is no the ultra-wide spectrum electrode structure that legal system makes compatible visible ray and full infrared band up to now; (6) because metal material exists larger resistance, its thermal effect and high-frequency electromagnetic signal drive the skin effect under control, will have a strong impact on and even reduce space electric field excitation usefulness, can bring negative effect etc. to the function formation of actuating medium and performance.
In the last few years, carry out beam-shaping based on electrically-controlled liquid crystal lenticule and convert this technical approach obtaining remarkable break-throughs, possess some unique functions, comprise: (one) applies electricity and drives control signal on the electrode of array liquid crystal structure, can converge visible or infrared light Shu Jinhang, disperse or phase delay etc.; (2) because the optical beam transformation effect of liquid crystal microlens drives the realization of control signal by applying electricity on electrode structure, can impose restriction to optical beam transformation, intervene or guide according to priori or beam characteristics.However, still lacking can simultaneously covering visible light and infrared spectral domain, can not disturb or change the electromagnetic structure feature of actuating medium, thoroughly can break away from the measure of the aspects such as the impact that thermal effect forms its function of actuating medium and play.At present, how to improve the task performance of electrically-controlled liquid crystal lenticule device further, the performance of long term maintenance liquid crystal device and parameter index, extend device lifetime and expanded function etc., become the precision measurement of optics wave beam and control technology field continues to develop the hot issue faced, 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 electrically-controlled liquid crystal light and converges microlens array chip, it can realize automatically controlled shaping and the modulation of specific modality light beam, easily be coupled with other optical photoconductor physical construction, good environmental adaptability, it is strong that electricity drives control ability.
For achieving the above object, according to an aspect of the present utility model, provide a kind of graphene-based electrically-controlled liquid crystal light and converge microlens array chip, comprise: Graphene liquid crystal optically focused microlens array, and drive control signal input port, Graphene liquid crystal optically focused microlens array is m × n unit, wherein, m, n is the integer be greater than, Graphene liquid crystal optically focused microlens array adopts sandwich construction, and under at the middle and upper levels between be provided with the first substrate in turn, first liquid crystal alignment layer, liquid crystal layer, second liquid crystal alignment layer, patterned Graphene electrodes layer, Graphene electrodes layer, second substrate, patterned Graphene electrodes layer is made up of the Graphene circular hole that m × n is evenly arranged, extend a chromosome patterning contact conductor from patterned Graphene electrodes layer and access the one end of driving control signal input port, extend another root contact conductor from Graphene electrodes layer and access the other end driving control signal input port, and provide voltage to drive control signal by driving control signal input port to patterned Graphene electrodes layer and Graphene electrodes layer.
Preferably, after visible ray near infrared light beam enters graphene-based electrically-controlled liquid crystal light convergence microlens array chip, the sub-incident wave beam of array is turned to by discrete, liquid crystal molecule effect under each sub-incident wave beam and controlled electrical field encourage, pooled the low-light dot matrix converging hot spot and form, and formed far field transmission wave beam through coupling of developing further.
Preferably, described graphene-based electrically-controlled liquid crystal light converges microlens array chip and also comprises chip housing, Graphene liquid crystal optically focused microlens array is positioned at chip housing and is connected with it, the light entrance face of Graphene liquid crystal optically focused microlens array and light-emitting face are windowed out exposed by the end face of chip housing and bottom surface, drive control signal input port to be arranged on chip housing, and outside exposed by the lateral opening hole of chip housing.
Preferably, the first and second liquid crystal alignment layers are made by polyimide.
Preferably, the first smooth anti-reflection film system and the second smooth anti-reflection film system of material of the same race is all manufactured with at the light entrance face of Graphene liquid crystal optically focused microlens array and light-emitting face.
In general, the above technical scheme conceived by the utility model compared with prior art, can obtain following beneficial effect:
The problems such as the electro-optical properties poor in timeliness that may bring out and structural instability.
4, control accuracy is high: can drive the Graphene liquid crystal microlens of control by accurate electricity because the utility model adopts, have stability and the control accuracy of high structure, electricity and electro-optical parameters, so the utility model has the high advantage of control accuracy.
5, easy to use: chip body of the present utility model is the Graphene liquid crystal optically focused microlens array be encapsulated in chip housing, patch conveniently in the optical path, easily mate with normal optical, photoelectricity and physical construction etc. and be coupled.
Accompanying drawing explanation
Fig. 1 is the structural representation that graphene-based electrically-controlled liquid crystal light of the present utility model converges microlens array chip;
Fig. 2 is the structural representation of the utility model Graphene liquid crystal optically focused microlens array;
Fig. 3 is the lenticular optical beam transformation schematic diagram of the utility model Graphene liquid crystal optically focused.
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
1-drives control signal input port, 2-Graphene liquid crystal optically focused microlens array, 3-chip housing, 4-first substrate, 5-first liquid crystal alignment layer, 6-liquid crystal layer, 7-second liquid crystal alignment layer, 8-patterned Graphene electrodes layer, 9-Graphene electrodes layer, 10-second substrate, the smooth anti-reflection film system of 11-first, the smooth anti-reflection film system of 12-second.
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 electrically-controlled liquid crystal light of the present utility model converges microlens array chip and comprises: chip housing 3, Graphene liquid crystal optically focused microlens array 2 and drive control signal input port 1.
Graphene liquid crystal optically focused microlens array 2 is positioned at chip housing 3 and is connected with it.
The light entrance face of Graphene liquid crystal optically focused microlens array 2 and light-emitting face are windowed out exposed by the end face of chip housing 3 and bottom surface.
Drive control signal input port 1 to be arranged on chip housing 3, and outside exposed by the lateral opening hole of chip housing 3.
Graphene liquid crystal optically focused microlens array is m × n unit, and wherein, m, n are the integer being greater than 1.The circular hole graphene pattern polarizing electrode that each first lenticule is interconnected synchronously is powered up.
As shown in Figure 2, the sandwich construction that Graphene liquid crystal optically focused microlens array of the present utility model adopts patterned Graphene electrodes layer-liquid crystal layer-Graphene electrodes layer such, and under at the middle and upper levels between be provided with the first substrate 4, first liquid crystal alignment layer 5, liquid crystal layer 6, second liquid crystal alignment layer 7, patterned Graphene electrodes layer 8, Graphene electrodes layer 9, second substrate 10 in turn.First liquid crystal alignment layer 5 and the second liquid crystal alignment layer 7 are 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.
Patterned Graphene electrodes layer 8 is made up of the Graphene circular hole that m × n is evenly arranged, and wherein, m, n are the integer being greater than 1.Extend a chromosome patterning contact conductor from patterned Graphene electrodes layer 8 and access the one end of driving control signal input port 1.Extend another root contact conductor from Graphene electrodes layer 9 and access the other end driving control signal input port 1.Voltage is provided to drive control signal by driving control signal input port 1 to patterned Graphene electrodes layer 8 and Graphene electrodes layer 9
As shown in Figure 3, be carried in driving on patterned Graphene electrodes layer 8 and Graphene electrodes layer 9 and control signal V, play specific array space electric field at stimulation across electrodes.After visible ray near infrared light beam enters graphene-based electrically-controlled liquid crystal light convergence microlens array chip, according to array scale and the arrangement situation of Graphene liquid crystal optically focused microlens array 2, turned to the sub-incident wave beam of array by discrete.Liquid crystal molecule effect under each sub-incident wave beam and controlled electrical field encourage, is pooled the low-light dot matrix of the convergence hot spot formation with certain luminance and size, and is had the far field transmission wave beam of specific pattern patterning form through coupling formation of developing further.The first smooth anti-reflection film system 11 and the second smooth anti-reflection film system 12 of material of the same race is all manufactured with at the light entrance face of Graphene liquid crystal optically focused microlens array 2 and light-emitting face.
Illustrate that the graphene-based electrically-controlled liquid crystal light of the utility model embodiment converges the course of work of microlens array chip below in conjunction with Fig. 1, Fig. 2 and Fig. 3.
First control signal input port is driven in signal wire access, voltage signal is inputted and is carried on Graphene liquid crystal optically focused microlens array.
Graphene-based electrically-controlled liquid crystal light converges microlens array chip and 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.
After visible ray near infrared light beam enters Graphene liquid crystal optically focused microlens array by the light incidence window of chip, encourage the lower liquid crystal molecule with specific refractive index distributional pattern built to interact with controlled electrical field and converge state in array, forming brightness with the low-light dot matrix driving control signal mean square amplitude or frequency change.Micro-point brilliance and size, by the amplitude modulation be applied in its Graphene electrodes of liquid crystal microlens or fm voltage modulating signal.The new transmission wave beam exported by chip light exit window is formed through coupling by the beamlet of each liquid crystal microlens compression shaping.
Graphene-based electrically-controlled liquid crystal light converges microlens array chip, can modulation convergence type compression shaping by what converge that microlens array carries out beam configuration.It is that circular graphene pattern polarizing electrode and bottom surface Graphene public electrode are formed that each unit liquid crystal converges lenticule by end face.Graphene pattern polarizing electrode in each first liquid crystal microlens is synchronously powered up, as illustrated electricity drives control signal V.Electrically-controlled liquid crystal planar microlens comprises liquid crystal material, liquid crystal initial orientation structure, Graphene electrodes, substrate and anti-reflection film system, and two surfaces up and down of liquid crystal material cover liquid crystal initial orientation structure, Graphene electrodes, substrate and anti-reflection film system successively.Described graphene-based electrically-controlled liquid crystal light converges microlens array chip and is used for beam pattern is changed.By the convergence degree regulating the voltage signal be carried on liquid crystal microlens array to carry out modulation array beggar outgoing beam, obtain the transmission wave beam based on being formed by the coupling of modulation beamlet.The outgoing beam obtained operates by the modulation of its mean square amplitude of electric signal or frequency, is set in specific modality or is tuned to predetermined form.
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 (5)
1. graphene-based electrically-controlled liquid crystal light converges a microlens array chip, comprising: Graphene liquid crystal optically focused microlens array and drive control signal input port, it is characterized in that,
Graphene liquid crystal optically focused microlens array is m × n unit, and wherein, m, n are the integer be greater than;
Graphene liquid crystal optically focused microlens array adopt sandwich construction, and under at the middle and upper levels between be provided with the first substrate, the first liquid crystal alignment layer, liquid crystal layer, the second liquid crystal alignment layer, patterned Graphene electrodes layer, Graphene electrodes layer, the second substrate in turn;
Patterned Graphene electrodes layer is made up of the Graphene circular hole that m × n is evenly arranged;
Extend a chromosome patterning contact conductor from patterned Graphene electrodes layer and access the one end of driving control signal input port, extend another root contact conductor from Graphene electrodes layer and access the other end driving control signal input port, and providing voltage to drive control signal by driving control signal input port to patterned Graphene electrodes layer and Graphene electrodes layer.
2. graphene-based electrically-controlled liquid crystal light according to claim 1 converges microlens array chip, it is characterized in that, after visible ray near infrared light beam enters graphene-based electrically-controlled liquid crystal light convergence microlens array chip, the sub-incident wave beam of array is turned to by discrete, liquid crystal molecule effect under each sub-incident wave beam and controlled electrical field encourage, pooled the low-light dot matrix converging hot spot and form, and formed far field transmission wave beam through coupling of developing further.
3. graphene-based electrically-controlled liquid crystal light according to claim 1 converges microlens array chip, it is characterized in that,
Described graphene-based electrically-controlled liquid crystal light converges microlens array chip and also comprises chip housing;
Graphene liquid crystal optically focused microlens array is positioned at chip housing and is connected with it;
The light entrance face of Graphene liquid crystal optically focused microlens array and light-emitting face are windowed out exposed by the end face of chip housing and bottom surface;
Drive control signal input port to be arranged on chip housing, and outside exposed by the lateral opening hole of chip housing.
4. graphene-based electrically-controlled liquid crystal light according to claim 1 converges microlens array chip, and it is characterized in that, the first and second liquid crystal alignment layers are made by polyimide.
5. graphene-based electrically-controlled liquid crystal light according to claim 1 converges microlens array chip, it is characterized in that, be all manufactured with the first smooth anti-reflection film system and the second smooth anti-reflection film system of material of the same race at the light entrance face of Graphene liquid crystal optically focused microlens array and light-emitting face.
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| CN104317118A (en) * | 2014-10-24 | 2015-01-28 | 华中科技大学 | Graphene-based electric-control liquid crystal light-converging micro-lens array chip |
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