CN203101787U - Novel electronic control zoom liquid crystal lens - Google Patents
Novel electronic control zoom liquid crystal lens Download PDFInfo
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- CN203101787U CN203101787U CN 201220458554 CN201220458554U CN203101787U CN 203101787 U CN203101787 U CN 203101787U CN 201220458554 CN201220458554 CN 201220458554 CN 201220458554 U CN201220458554 U CN 201220458554U CN 203101787 U CN203101787 U CN 203101787U
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- liquid crystal
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- control circuit
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Abstract
The utility model discloses a novel electronic control zoom liquid crystal lens which is composed of a liquid crystal box, liquid crystal in the liquid crystal box and an electrode address control circuit, wherein the liquid crystal box is prepared by two circular glass baseplates. The electrode address control circuit is utilized to select circular electrodes of specific addresses on the glass baseplates of the liquid crystal box, voltage is applied, the selected electrodes are spliced into a fresnel zone plate, and a liquid crystal director is changed under the effect of an applied field, thereby changing the refractive index of the liquid crystal box, so as to distribute in accordance with the fresnel zone plate and achieve the effect of the lens through diffraction. The selected circular electrodes are changed through the control circuit in accordance with the requirements of the addresses, so as to be splice into a new fresnel zone plate with different focal lengths, and the voltage is applied, so as to achieve the purposes of subdividing the focal length and permitting continuous zoom. The novel electronic control zoom liquid crystal lens has the advantages of no moving part, less power consumption, short response time, high transmittance, accuracy in focusing, easiness in miniaturization and the like and has broad application prospects in the aspects of a zoom optical imaging system, a video detecting and monitoring camera system, optical storage, an optical head of a DVD (Digital Versatile Disc) player, optical communication and the like.
Description
Technical field
The utility model relates to a kind of new electronic control Zoom liquid crystal lens, particularly needs small integrated movement-less part and object distance to change and the fixing electric control varifocal lens of imaging surface.
Background technology
Diffraction optics not only can increase the degree of freedom of design in optical design, and can break through the limitation of all many-sides of conventional optical systems.Thereby, improving the system imaging quality, reduce volume and aspect such as reduce cost shows the conventional optical systems incomparable advantage, and be subjected to the attention of increasing optical designers.Variable focal length optical system has obtained to use widely on various optical instruments, and some new design philosophys emerge in an endless stream.The design's main thought is to utilize the electro-optical characteristic of liquid crystal, change the purpose that the distribution of Fresnel wavestrip reaches lens segmentation focal length continuous vari-focus by external electrical field, thereby make lens arrangement compactness, light and handy, zoom is more convenient, accurate, and has avoided complicated lens mechanical motion in the traditional zoom system.Can not only on all kinds of digital vedio recording products, be used widely, more can represent the value of its brilliance such as numerous areas such as military affairs, medical treatment, space flight in others.
The utility model content
Goal of the invention: the utility model is that a kind of electric controlled liquid crystal lens that does not have moving-member, fast speed, low-power consumption, is beneficial to system's miniaturization will be provided.
Technical scheme: a kind of new electronic control Zoom liquid crystal lens, liquid crystal and electrode address control circuit are formed in the liquid crystal cell of being made by two circular glass substrates, the box, it is characterized in that being carved with the ITO concentric ring electrode on described two circular glass substrates, ITO concentric ring electrode width equates (submicron order), adjacent two donut gaps are the smaller the better, with can realize, adjacent two electrodes do not produce to electrically connect and are advisable, and be coated with polyimide alignment layers on the glass substrate.Encapsulation forms described liquid crystal cell to the heart by two circular glass substrates.Described electrode address control circuit applies the ITO concentric ring electrode of voltage according to the good electrode address selection of calculated in advance, is combined into the Fresnel zone plate of different focal.Described liquid crystal cell is filled by liquid crystal material.
The concrete steps that realize the electric controlled liquid crystal lens technical scheme in the utility model are:
(1) preparation has the mask plate that waits the width donut, and the annulus width is a submicron order, and the gap is the smaller the better between the adjacent annulus, with can realize, adjacent two electrodes do not produce electric connection and are advisable;
(2) two circular glass substrates that are coated with the ITO nesa coating of preparation are having the transparent conducting film glass substrate to have the electrode one side evenly to be coated with the last layer photoresist with the rotation method with plastic film;
(3) utilize the mask plate of in step (1), making, the glass substrate that scribbles photoresist is exposed under the ultraviolet photolithographic machine,, on glass substrate, obtain the ITO concentric ring electrode through development, etching;
(4) be coated with the last layer polyimide on the glass substrate of concentric ring electrode having, and this layer is orientated, as the oriented layer of liquid crystal;
(5) concentric ring electrode on the two sheet glass substrates is aimed at, sealed with epoxy resin all around, and be reserved with an osculum, constitute a cavity, cavity thickness is controlled with interval body;
(6) in cavity, pour into nematic liquid crystal, make liquid crystal cell, and the osculum of reserving is sealed.Be subjected to the oriented layer effect, the liquid crystal director direction is parallel to the oriented layer frictional direction in the box;
(7) utilize the electrode address control circuit to select the ITO concentric ring electrode of particular address to constitute the fresnel's zone plate pattern, each Fresnel zone ring is made up of the continuous ITO concentric ring electrode of some, and to selected electrode application voltage, the liquid crystal director direction is regulated and control by electric field, the liquid crystal director direction in powered electrode zone is parallel to direction of an electric field, therefore, be Fresnel zone plate under the alive outside regulation and control of liquid crystal cell refractive index and distribute, present lens effect through diffraction;
(8) utilize control circuit to change the energising round loop electrode, can obtain the Fresnel zone pattern of different focal, reach the purpose of the quasi-continuous zoom of segmentation focal length by the requirement of electrode address.
Beneficial effect: the method that the utility model is based on electrically-controlled liquid crystal realizes the zoom of lens, has movement-less part, the response time is short, transmitance is high, focusing is accurate, be easy to fine quality such as miniaturization.Can not only on all kinds of digital vedio recording products, be used widely, more can represent its remarkable value at numerous areas such as military affairs, medical treatment, space flight.
Description of drawings
Fig. 1 is the circular glass substrate synoptic diagram that has the ITO concentric ring electrode
Fig. 2 is a phase-type liquid crystal cell front elevation
Fig. 3 is a phase-type liquid crystal cell diagrammatic cross-section
Fig. 4 is selected energising round loop electrode synoptic diagram
Fig. 5 is an electrically-controlled liquid crystal director orientation synoptic diagram
Fig. 6 is an electrically-controlled liquid crystal lens focus synoptic diagram
Fig. 7 is focal length selected energising round loop electrode comparison diagram when being respectively 3mm and 4mm
Fig. 8 is an electrically-controlled liquid crystal lens zoom synoptic diagram
Embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.
The utility model is a kind of new electronic control Zoom liquid crystal lens, and liquid crystal and electrode address control circuit are formed in the liquid crystal cell of being made by two circular glass substrates, the box.It is characterized in that being carved with the ITO concentric ring electrode on described two circular glass substrates, ITO concentric ring electrode width equates (submicron order), adjacent two donut gaps are more little more little, with can realize, adjacent two electrodes do not produce to electrically connect and are advisable, and be coated with polyimide alignment layers on the glass substrate, Fig. 1 is the circular glass substrate synoptic diagram that has the ITO concentric ring electrode, and 101 is glass substrates among the figure, the 102nd, concentric ring electrode, the 103rd, non-electrode district.Encapsulation forms described liquid crystal cell to the heart by two circular glass substrates, Fig. 2 is a phase-type liquid crystal cell front elevation, the 201st, epoxy resin envelope box glue, the 202nd, the nematic liquid crystal in the liquid crystal cell, the liquid crystal cell diagrammatic cross-section as shown in Figure 3, wherein 301 is wide ring electrodes with one heart, the 302nd, polyimide alignment layers, the 303rd, epoxy resin envelope box glue, the 304th, nematic liquid crystal, the 305th, glass substrate.The ITO concentric ring electrode that described electrode address control circuit applies voltage according to the good electrode address selection of calculated in advance is combined into the Fresnel zone plate of different focal, each Fresnel zone ring is made up of the continuous ITO concentric ring electrode of some, Fig. 4 is selected energising round loop electrode synoptic diagram, wherein 401 is selected powered electrode zones, the 402nd, and powered electrode zone not.To selected electrode application voltage, the liquid crystal director direction is regulated and control by electric field, the liquid crystal director direction in powered electrode zone is parallel to direction of an electric field, therefore, being Fresnel zone plate under the alive outside regulation and control of liquid crystal cell refractive index distributes, present lens effect through diffraction, Fig. 5 is an electrically-controlled liquid crystal director orientation synoptic diagram, Fig. 7 is focal length selected energising round loop electrode comparison diagram when being respectively 3mm and 4mm, can be combined into the Fresnel zone plate of different focal by the concentric ring electrode of selecting different addresses.Fill by liquid crystal material in the described liquid crystal cell.
Implementation step of the present utility model is:
(1) preparation has the mask plate that waits the width donut, and the annulus width is a submicron order, and the gap is the smaller the better between the adjacent annulus, with can realize, adjacent two electrodes do not produce electric connection and are advisable;
(2) two circular glass substrates that are coated with the ITO nesa coating of preparation are having the transparent conducting film glass substrate to have the electrode one side evenly to be coated with the last layer photoresist with the rotation method with plastic film;
(3) utilize the mask plate of in step (1), making, the glass substrate that scribbles photoresist is exposed under the ultraviolet photolithographic machine, through development, etching, on glass substrate, obtain the ITO concentric ring electrode, as shown in Figure 1,101 is glass substrates among the figure, the 102nd, and concentric ring electrode, the 103rd, non-electrode district;
(4) be coated with the last layer polyimide on the glass substrate of concentric ring electrode having, and this layer is orientated, as the oriented layer of liquid crystal;
(5) concentric ring electrode on the two sheet glass substrates is aimed at, sealed with epoxy resin all around, be reserved with an osculum, constitute a cavity, cavity thickness is controlled with interval body;
(6) in cavity, pour into nematic liquid crystal, make liquid crystal cell, and the osculum of reserving is sealed.Be subjected to the oriented layer effect, the liquid crystal director direction is parallel to the oriented layer frictional direction in the box, Figure 2 shows that the front elevation of perfusion liquid crystal liquid crystal cell afterwards, the 201st, epoxy resin envelope box glue, the 202nd, the nematic liquid crystal in the liquid crystal cell, the liquid crystal cell diagrammatic cross-section as shown in Figure 3, wherein 301 is concentric wide ring electrodes, the 302nd, and polyimide alignment layers, the 303rd, epoxy resin envelope box glue, the 304th, nematic liquid crystal, the 305th, glass substrate.
(7) utilize the electrode address control circuit to select the ITO concentric ring electrode of particular address to constitute the fresnel's zone plate pattern, each Fresnel zone ring is made up of the continuous ITO concentric ring electrode of some, and to selected electrode application voltage, the liquid crystal director direction is regulated and control by electric field, the liquid crystal director direction in powered electrode zone is parallel to direction of an electric field, therefore, being Fresnel zone plate under the alive outside regulation and control of liquid crystal cell refractive index distributes, present lens effect through diffraction, Fig. 4 is selected energising round loop electrode synoptic diagram, wherein 401 is selected powered electrode zones, the 402nd, powered electrode zone not, Fig. 5 is an electrically-controlled liquid crystal director orientation synoptic diagram, the 501st, powered electrode, the liquid crystal director direction in this zone is parallel to direction of an electric field, and Fig. 6 is an electrically-controlled liquid crystal lens focus synoptic diagram, the 601st, liquid crystal cell, the 602nd, to the added voltage of round loop electrode;
(8) utilize control circuit to change the energising round loop electrode by the requirement of electrode address, can obtain the Fresnel zone pattern of different focal, reach the purpose of the quasi-continuous zoom of segmentation focal length, selected energising round loop electrode comparison diagram when Fig. 7 focal length is respectively 3mm and 4mm, Fig. 8 lens zoom synoptic diagram.
Claims (1)
1. new electronic control Zoom liquid crystal lens, liquid crystal and electrode address control circuit are formed in the liquid crystal cell of being made by two circular glass substrates, the box, it is characterized in that being carved with the ITO concentric ring electrode on described two circular glass substrates, ITO concentric ring electrode width equates, adjacent two donut gaps make adjacent two electrodes not produce electric connection, and are coated with polyimide alignment layers on the glass substrate; Encapsulation forms described liquid crystal cell to the heart by two circular glass substrates; The ITO concentric ring electrode that described electrode address control circuit applies voltage according to the good electrode address selection of calculated in advance is combined into the Fresnel zone plate of different focal, and each Fresnel zone ring is made up of the continuous ITO concentric ring electrode of some.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458554 CN203101787U (en) | 2012-09-06 | 2012-09-06 | Novel electronic control zoom liquid crystal lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458554 CN203101787U (en) | 2012-09-06 | 2012-09-06 | Novel electronic control zoom liquid crystal lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203101787U true CN203101787U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220458554 Expired - Fee Related CN203101787U (en) | 2012-09-06 | 2012-09-06 | Novel electronic control zoom liquid crystal lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203101787U (en) |
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2012
- 2012-09-06 CN CN 201220458554 patent/CN203101787U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20140906 |
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| EXPY | Termination of patent right or utility model |