CN104317116A - Electric control liquid-crystal light divergence microlens array chip on basis of graphene electrodes - Google Patents
Electric control liquid-crystal light divergence microlens array chip on basis of graphene electrodes Download PDFInfo
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- CN104317116A CN104317116A CN201410576694.3A CN201410576694A CN104317116A CN 104317116 A CN104317116 A CN 104317116A CN 201410576694 A CN201410576694 A CN 201410576694A CN 104317116 A CN104317116 A CN 104317116A
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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
- G02F1/01—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 intensity, phase, polarisation or colour
- G02F1/13—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 intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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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
- G02F1/01—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 intensity, phase, polarisation or colour
- G02F1/13—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 intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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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
- G02F1/01—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 intensity, phase, polarisation or colour
- G02F1/13—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 intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
- G02F1/133723—Polyimide, polyamide-imide
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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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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses an electric control liquid-crystal light divergence microlens array chip on the basis of graphene electrodes. The electric control liquid-crystal light divergence microlens array chip comprises a driving control signal input port and a graphene liquid-crystal light divergence microlens array, the graphene liquid-crystal light divergence microlens array comprises m*n of elements and is of liquid-crystal interlayer structure, a first substrate, a patterning graphene electrode, a first liquid crystal direction layer, a liquid crystal layer, a second liquid crystal direction layer, a graphene electrode and a second substrate are sequentially arranged between the lower layer and the upper layer, the patterning graphene electrode and the graphene electrode are manufactured on the first substrate and the second substrate respectively, the patterning graphene electrode is composed of m*n of micro circular graphene which are isolated by microloops and connected by microlines and are distributed in order, and the patterning graphene electrode and the graphene electrode extend to form a metal electrode lead respectively. The electric control liquid-crystal light divergence microlens array is long in device service life and high in reliability, can be easily coupled with a conventional optic photoelectric mechanism structure, and is high in environment suitability and the like.
Description
Technical field
The invention belongs to optical precision measurement and control technology field, more specifically, relate to a kind of electrically-controlled liquid crystal light based on Graphene electrodes and disperse microlens array chip.
Background technology
In the last few years, the development of electrically-controlled liquid crystal micro lens technology rapidly, light beam automatically controlled convergence, disperse, shaping, collimation, focusing, pendulum are burnt, it is even integrated to be coupled with light-sensitive array and LED array, build special smooth functional structure etc. in, present good development prospect.The exemplary functions presented comprises: (one) applies electricity and drives control signal in array liquid crystal microstructure, and the light that can perform converges, light is dispersed or proper phase conversion etc., can launch, solidifies or modulation under any wave beam state; (2) the optical beam transformation effect of electrically-controlled liquid crystal microstructure is by the constraint of priori or beam treatment result, intervention or guiding; (3) its time response constant of micron order thickness electrically-controlled liquid crystal material performing the operation of control light has reached sub-Millisecond, laboratory-scale fast to Microsecond grade at present, can meet conventional dynamic control light demand.At present, how to further develop control luminous energy power stronger, react that more rapid, reliable property is higher, longer service life, the lower and eco-friendly liquid crystal microlens technology of cost, has become new research and development focus.
Up to now, in micron thickness liquid crystal material, space electric field is built based on precious metal alloys membrane electrode, drive control liquid crystal and perform the defect main manifestations of control light process in the following areas: (one) must have enough thickness to carry the positive and negative space charge region of thin layer for encouraging the space electric field be carried on liquid crystal material based on the electrode of film alloy material, makes liquid crystal molecule present specific dipole spatial arrangement form; (2) the film alloy electrode that thickness is larger presents larger face form drag and resists in alternating electric field, makes the micrometer level depth space electric field that encourages between the patterning face electrode pair in device there is spatial non-uniformity based on position shape; (3) film alloy electrode has stronger thermal effect, long heat history can suppress the liquid crystal molecule activity be distributed near liquid crystal initial orientation structure, reduce electricity and drive liquid crystal molecule oriented alignment usefulness under control effect and corresponding automatically controlled dielectric properties, also can increase metal electrode impedance further in addition, affect the automatically controlled response sensitivity of device; (4) film alloy electrode presents narrow band light gated nature and spectrum transmission unevenness; (5) electrons by electric field driven, energy state being improved overflows from metal film electrode, and the electronics penetrating liquid crystal initial orientation structure, after entering liquid crystal material, by neutralizing with the polar group of liquid crystal molecule, reduces the dielectric properties of liquid crystal material; (6) precious metal alloys material price is high, in manufacture of materials and liquid crystal device making link, there is environmental pollution etc.Since entering the new century, development has nano thickness, high conductance, low thermal effect and wide range adaptive electrode technology, is subject to extensive concern.
The Graphene recent years of being born in the turn of the century is developed rapidly, show very excellent charge carrier characteristic up to now, as the charge carrier such as electronics or hole almost can freely walk in Graphene the superpower conduction that represents and pole low resistive, general only absorption is no more than the visible ray of 3% and the superelevation light transmission of infrared waves and ultra-wide spectrum adaptability, at room temperature transmit the speed of electronics far faster than the superior electron mobility that various conductive materials known at present represent, based on the superpower structural stability shown by the nano thickness single or multiple lift intussusception framework that hexagonal network connects, fastness, pliability, corrosion resistance and anti-high field disturbance ability, that represent based on two-dimensional network structure with most of optics known at present, photoelectron and the splendid structure matching of microelectronic material and coupling.Based on the potential advantages that nano-graphene film represents in electrode structure, build the electrically-controlled liquid crystal micro lens technology based on Graphene mould, in the optical precision measurement and control technology of development advanced person, there is active demand.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides a kind of electrically-controlled liquid crystal light based on Graphene electrodes and disperse microlens array chip, it can realize the automatically controlled shaping of micro-round unthreaded hole battle array patterned light field and meticulous modulation, easily be coupled with other optical photoconductor physical construction, good environmental adaptability.
For achieving the above object, according to one aspect of the present invention, provide a kind of electrically-controlled liquid crystal light based on nano-graphene electrode and disperse microlens array chip, comprise and drive control signal input port, and Graphene liquid crystal astigmatism microlens array, Graphene liquid crystal astigmatism microlens array is m × n unit, wherein m, n is the integer being greater than 1, Graphene liquid crystal astigmatism microlens array adopts sandwiching liquid crystal structure, and be provided with the first substrate in turn between lower upper strata, patterned Graphene electrodes, first liquid crystal alignment layer, liquid crystal layer, second liquid crystal alignment layer, Graphene electrodes, second substrate, patterned Graphene electrodes and Graphene electrodes are produced on the first substrate and the second substrate, patterned Graphene electrodes to be isolated with micro-annulus by m × n and formed with micro-circular graphitic alkene ordered arrangement that micro-line connects, a metal electrode lead-in wire is extended respectively from patterned Graphene electrodes and Graphene electrodes, and the two ends of control signal input port are driven in access, drive control signal input port for providing voltage signal for patterned Graphene electrodes and Graphene electrodes.
Preferably, after light wave enters Graphene liquid crystal astigmatism microlens array, be discretized into sub-incident wave beam battle array, liquid crystal molecule under each sub-incident wave beam and controlled electrical field encourage interacts, by the low-light Confucius wave field diverging to micro-annulus and define, and form low-light hole battle array transmission wave beam through coupling and export from chip.
Preferably, described chip also comprises chip housing, Graphene liquid crystal astigmatism microlens array is positioned at chip housing and is connected with it, the light entrance face of Graphene liquid crystal astigmatism microlens array and light-emitting face, window 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 liquid crystal alignment layer and the second liquid crystal alignment layer are made by polyimide.
Preferably, the first substrate and the second substrate have identical optical material.
In general, the above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial effect:
1, can automatically controlled shaping and modulation low-light hole battle array light field: the present invention adopts Graphene electrodes to drive to control liquid crystal material and carries out array astigmatism, there is advantage outgoing beam being efficiently set in specific modality or being tuned to predetermined form.
2, spectral range is wide: based on the wide spectral height light transmission features of grapheme material, chip has the wide advantage of spectral range.
3, controlled efficiency height is long for device lifetime: owing to adopting, the Graphene with superpower conduction and control electrical feature is molded makes electrode, eliminates the impact on liquid crystal material polarization behavior such as electronic and ionic, and device has long advantage of automatically controlled usefulness high life.
4, intelligent: the electricity be carried in Graphene electrodes by modulation drives control signal, the structure of its beam configuration of patterning Transmission field and modulation are operated, in the constraint of priori or wave field pattern characteristics, intervention or can launch under guiding, there is intelligent feature.
5, easy to use: control optical chip main body of the present invention is the Graphene liquid crystal astigmatism microlens array be encapsulated in chip housing, 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 that the electrically-controlled liquid crystal light that the present invention is based on Graphene electrodes disperses microlens array chip;
Fig. 2 is the structural representation of Graphene liquid crystal astigmatism microlens array of the present invention;
Fig. 3 the present invention is based on the schematic diagram that Graphene liquid crystal astigmatism lenticule carries out optical beam transformation.
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 astigmatism microlens array, 3-chip housing.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Figure 1, the electrically-controlled liquid crystal light that the present invention is based on Graphene electrodes is dispersed microlens array chip and is comprised and drive control signal input port, Graphene liquid crystal astigmatism microlens array 2 and chip housing 3.
Graphene liquid crystal astigmatism microlens array 2 is positioned at chip housing 3 and is connected with it.
The light entrance face of Graphene liquid crystal astigmatism microlens array and light-emitting face, window 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 astigmatism microlens array is m × n unit, and wherein m, n are the integer being greater than 1.Grapheme material outside the center isolated by the micro-annulus micro-circular graphitic alkene interconnected in each liquid crystal astigmatism lenticule and micro-annulus is synchronously powered up.
After light wave enters Graphene liquid crystal astigmatism microlens array 2, sub-incident wave beam battle array is discretized into according to lenticular scale and arrangement situation, liquid crystal molecule under each sub-incident wave beam and controlled electrical field encourage interacts, and is diverged to the low-light Confucius wave field that defined by micro-round ring of light and form low-light hole battle array transmission wave beam through coupling to export from chip.
As shown in Figure 2, the Graphene liquid crystal astigmatism microlens array of the embodiment of the present invention adopts sandwiching liquid crystal structure, and is provided with the first substrate, patterned Graphene electrodes, the first liquid crystal alignment layer, liquid crystal layer, the second liquid crystal alignment layer, Graphene electrodes, the second substrate between lower upper strata in turn.
Patterned Graphene electrodes and Graphene electrodes be produced in there is identical optical material the first substrate and the second substrate on.
First liquid crystal alignment layer and the second liquid crystal alignment layer 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 to be isolated with micro-annulus by m × n and is formed with micro-circular graphitic alkene ordered arrangement of Wei Xian UNICOM.
Extend a metal electrode lead-in wire respectively from patterned Graphene electrodes and Graphene electrodes, the two ends of control signal input port 1 are driven in access, and the patterned Graphene electrodes in each first lenticule is synchronously powered up.
As shown in Figure 3, of the present inventionly carry out beam divergence effect based on Graphene liquid crystal astigmatism lenticule, realized by the voltage signal V be carried between patterned Graphene electrodes and Graphene electrodes, give also local in figure and disperse void Jiao length of its typical micro-round unthreaded hole of light field and divergent beams and empty focal spot feature.For strengthening beam treatment ability, be shaped with the anti-reflection film of material of the same race respectively at the light entrance face of the first substrate and the second substrate and light-emitting face.
For making those skilled in the art understand the present invention better, illustrate that the electrically-controlled liquid crystal light based on Graphene electrodes of the embodiment of the present invention disperses the principle of work of microlens array chip below in conjunction with Fig. 1 to Fig. 3.
Electrically-controlled liquid crystal light based on Graphene electrodes is dispersed 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.
Control signal input port is driven in signal wire access, voltage signal is inputted and is carried in electrically-controlled liquid crystal light and disperses on microlens array.
After light beam enters Graphene liquid crystal astigmatism microlens array, after interacting with liquid crystal molecule, disperse state in array.The voltage signal be carried in Graphene electrodes has encouraged space electric field between patterned Graphene electrodes and Graphene electrodes, drives the liquid crystal material that control fills and forms the functionalization liquid crystal structure with specific refractive index space distribution form.Disperse light field by the son constructed by the optical beam transformation effect of every unit liquid crystal microlens, the Center Dark Spot shape low-light hole defined by the micro-annulus of special pore size distribution is formed.Extinction ratios etc. in its annulus brightness, aperture and hole, change with the change of driving control signal mean square amplitude or frequency.
Form low-light hole battle array Transmission field from the light field of dispersing of contiguous microlens outgoing through being coupled and exporting from chip.Graphene liquid crystal astigmatism lenticule comprises liquid crystal material, liquid crystal alignment layer, Graphene electrodes, metal electrode lead-in wire, optical base-substrate and anti-reflection film etc.Two surfaces up and down of liquid crystal material cover liquid crystal alignment layer, Graphene electrodes, substrate and anti-reflection film successively.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the electrically-controlled liquid crystal light based on Graphene electrodes disperses a microlens array chip, comprises and drives control signal input port and Graphene liquid crystal astigmatism microlens array, it is characterized in that,
Graphene liquid crystal astigmatism microlens array is m × n unit, and wherein m, n are the integer being greater than 1;
Graphene liquid crystal astigmatism microlens array adopts sandwiching liquid crystal structure, and is provided with the first substrate, patterned Graphene electrodes, the first liquid crystal alignment layer, liquid crystal layer, the second liquid crystal alignment layer, Graphene electrodes, the second substrate between lower upper strata in turn;
Patterned Graphene electrodes and Graphene electrodes are produced on the first substrate and the second substrate;
Patterned Graphene electrodes to be isolated with micro-annulus by m × n and formed with micro-circular graphitic alkene ordered arrangement that micro-line connects;
Extend a metal electrode lead-in wire respectively from patterned Graphene electrodes and Graphene electrodes, and the two ends of control signal input port are driven in access;
Drive control signal input port for providing voltage signal for patterned Graphene electrodes and Graphene electrodes.
2. electrically-controlled liquid crystal light according to claim 1 disperses microlens array chip, it is characterized in that, after light wave enters Graphene liquid crystal astigmatism microlens array, be discretized into sub-incident wave beam battle array, liquid crystal molecule under each sub-incident wave beam and controlled electrical field encourage interacts, by the low-light Confucius wave field diverging to micro-annulus and define, and form low-light hole battle array transmission wave beam through coupling and export from chip.
3. electrically-controlled liquid crystal light according to claim 1 disperses microlens array chip, it is characterized in that,
Described chip also comprises chip housing;
Graphene liquid crystal astigmatism microlens array is positioned at chip housing and is connected with it;
The light entrance face of Graphene liquid crystal astigmatism microlens array and light-emitting face, window 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. electrically-controlled liquid crystal light according to claim 1 disperses microlens array chip, it is characterized in that, the first liquid crystal alignment layer and the second liquid crystal alignment layer are made by polyimide.
5. electrically-controlled liquid crystal light according to claim 1 disperses microlens array chip, it is characterized in that, the first substrate and the second substrate have identical optical material.
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| CN201410576694.3A CN104317116B (en) | 2014-10-24 | 2014-10-24 | Electric control liquid-crystal light divergence microlens array chip on basis of graphene electrodes |
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| CN201410576694.3A CN104317116B (en) | 2014-10-24 | 2014-10-24 | Electric control liquid-crystal light divergence microlens array chip on basis of graphene electrodes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019730A (en) * | 2021-10-29 | 2022-02-08 | 华中科技大学 | Dual-mode integrated liquid crystal micro-lens array, and preparation method and application thereof |
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| CN114019730B (en) * | 2021-10-29 | 2024-05-31 | 华中科技大学 | Dual-mode integrated liquid crystal micro-lens array, preparation method thereof and voltage loading method |
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