CN109709668A - A kind of automatic phase control unit and adjusting method - Google Patents
A kind of automatic phase control unit and adjusting method Download PDFInfo
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- CN109709668A CN109709668A CN201910107532.8A CN201910107532A CN109709668A CN 109709668 A CN109709668 A CN 109709668A CN 201910107532 A CN201910107532 A CN 201910107532A CN 109709668 A CN109709668 A CN 109709668A
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Abstract
A kind of automatic phase control unit and adjusting method, adjusting unit includes from common phase control assembly and from common phase lens；It is filled with conducting liquid and non-electrically conductive liquid from common phase lens interior, is controlled from common phase lens by from common phase control assembly, makes that deformation occurs from common phase lens interior liquid surface, to realize phase adjustment.The present invention realizes that light phase is effectively modulated using the liquid lens based on dielectric wetting effect for the first time.The present invention has no mechanical moving element, the feature that self application is good, the response time is short and integrated performance is good.The present invention can provide a kind of new tool to splice sub- mirror common phase adjustment, be applied to distributed synthetic aperture optical interference imaging system, can reduce system design difficulty, image quality is substantially improved.
Description
Technical field
It is a kind of by lens self-deformation the present invention relates to a kind of automatic phase control unit and adjusting method, so that
By the available effective adjustment of the light of lens to realize the controllable novel method of phase, can be mentioned to splice sub- mirror common phase adjustment
For a kind of new tool, it is applied to distributed synthetic aperture optical interference imaging system, system design difficulty can be reduced, be substantially improved
Image quality.
Background technique
High-definition remote sensing is imaged on atural object detection, Tactics of Urban Surveying, agricultural forest monitoring, precision target detection etc. and answers
It is huge with meaning, extremely important booster action is played in national economic development and national defense construction.Under the conditions of diffraction limit,
Minimum angular resolution acquired in optical sensor is θ=1.22 λ/D (λ is target emanation wavelength, and D is optical system bore),
It is bound to the bore of optical system to be increased to improve spatial resolution.But the increase of system bore by material, technique,
The limitation of the factors such as manufacturing cost, quality and payload bay volume.Rule of thumb and statistical law, optical imaging system
Manufacturing cost is directly proportional to 2.76 powers of bore, and bore increases and brings great difficulty to optical manufacturing and detection.
Using multiple small-bore sub- microscope groups at the synthetic aperture imaging technology of the distributed array of apertures of certain forms be solution
The certainly important technology that high-resolution, heavy caliber are imaged.It, must for the high-resolution imaging for guaranteeing distributed Synthetic Aperture System
It must realize the optics common phase position splicing between each sub-aperture.Therefore, sub-aperture common phase position regulation problem becomes research emphasis.
Common phase precision decision systems image quality between sub-aperture, along the location error of mirror surface vertical direction between sub-aperture
The part for needing to be corrected to lambda1-wavelength adjusts sub- mirror position by high-precision micro-displacement adjustment mechanism to realize altogether
The method of phase has been achieved for being widely applied.As 18 pieces of sub- mirrors of JWST telescope are used by wave front detector and distorting lens, sub- mirror
Three-dimensional actuates adjustment mechanism and secondary mirror 6 DOF adjustment mechanism constitutes closed-loop control, realizes the in-orbit common phase adjustment of optical main mirror.By temperature
Degree etc. factors influence, the common phase relationship between sub- mirror can change during the work time, JWST primary mirror in orbit after, put down
Need to do the common phase adjustment of a primary mirror and optical system every two week.U.S.'s Keck telescope is passed using capacitive displacement
Sensor and nut-screw rod actuator complete sub- mirror common phase adjustment.However, this kind of common phase regulation technology needs all to be equipped with to each sub- mirror
A set of micro-displacement mechanical adjusting mechanism and Additional adjustment mechanisms, phase-condition system is complicated, phase modulation difficulty is big.How from machinery
The big passive modulation turn over of formula, complexity, difficulty is changed to succinct self-action adjustment, how passively to adjust and is converted to from single sub- mirror
Multiple sub- mirror active accommodations are urgent problems to fast implement sub- mirror common phase adjusting.
Summary of the invention
Technology of the invention solves the problems, such as: overcome the deficiencies of the prior art and provide a kind of automatic phase control unit and
Adjusting method substitutes conventional lenses or conventional lens array using the lens or lens array that have from common phase ability respectively, real
Existing non-mechanical, automatic phase adjustment, reduce phase modulation component complexity.Adjusting phase mode using voltage reduces mechanical tune
The phase response time is saved, system suitability and integration are enhanced.
The technical solution of the invention is as follows: a kind of automatic phase control unit, including from common phase control assembly and from altogether
Phase lens；It is filled with conducting liquid and non-electrically conductive liquid from common phase lens interior, from common phase lens by from common phase control assembly control
System, makes that deformation occurs from common phase lens interior liquid surface, to realize phase adjustment.
It is described to include the first conducting liquid, the second conducting liquid, non-electrically conductive liquid and transparent glass from common phase lens；First
Conducting liquid, the second conducting liquid are located at non-electrically conductive liquid two sides；Transparent glass is located at from the two sides of common phase lens；Light transmission
Glass is disposed perpendicular to optical axis direction, and light, which is passed through, to be entered through glass or be pierced by from common phase lens.
It further include being located at from the outermost shape fixing layer of the non-light passing side surrounding of common phase lens, for protecting and fixing from altogether
The shape of phase lens.
It further include electric insulation layer；Electric insulation layer is located on the inside of shape fixing layer；Electric insulation layer be used for the first conducting liquid,
When second conducting liquid is powered, it is electrically insulated with the external world.
It further include sealant；Sealant is located at the inside of electric insulation layer；Sealant is for leading the first conducting liquid, second
Electro-hydraulic body and non-electrically conductive liquid are isolated from the outside.
It is described to include the first conducting liquid voltage control system, the second conducting liquid voltage control system from common phase control assembly
System；First conducting liquid voltage control system and the first conducting liquid connection；Second conducting liquid voltage control system and second
Conducting liquid connection；It is controlled by phase feedback system, the first conducting liquid voltage is adjusted separately according to phase-feedback signal instruction
Control system, the second conducting liquid voltage control system voltage, so as to adjust the first conducting liquid and non-electrically conductive liquid interface shape
Shape and the second conducting liquid and non-electrically conductive liquid interface shape, to change by the light path from common phase lens, to adjust saturating
Cross the phase of light.
First conducting liquid and the second conducting liquid are conductive ions liquid or salting liquid.
The non-electrically conductive liquid is non-polar oil solution or pressure-air.
A kind of automatic phase control method, steps are as follows:
1) when first the first interface of conducting solution and second the first interface of conducting solution are when a certain position, light is passed through
It is imaged from common phase lens focus；
2) image-forming detecting system detects image, if detection obtains non-homogeneous, nonlinear type interference fringe, imaging inspection
Examining system forms phase adjustment signal, sends the signal to phase feedback system；
3) phase feedback system feeds back to adjustment signal from common phase control assembly, by adjusting operating voltage, makes first
The first interface of conducting solution is adjusted to the first conducting solution second contact surface, second the first interface of conducting solution is adjusted to the second conduction
Solution second contact surface；
4) light is passed through from common phase lens focus into new images；
5) image-forming detecting system detects new images, if detection obtains uniform, linear type interference fringe, phase tune
It is whole that if detection obtains non-homogeneous, nonlinear type interference fringe, image-forming detecting system forms phase adjustment signal again in place, and
The new signal is sent to phase feedback system, is made conductive to the first conducting solution second contact surface and second from common phase control assembly
Solution second contact surface is adjusted again, until image-forming detecting system detects to obtain uniform, linear type interference fringe.
A kind of automatic phase control synthesis lens system, including multiple automatic phase control units, instead of single heavy caliber
Imaging len adjusts the phase for entering the light of synthesis lens system in real time, realizes from common phase.
The advantages of the present invention over the prior art are that:
Present invention employs the form of the double interfacial liquid lens of three liquid based on dielectric wetting effect, by from common phase control
Component processed adjusts liquid surface in real time, so as to change through the light phase from common phase lens, realizes automatic phase
Position is adjusted.
The present invention under the premise of realizing Focussing, realizes phase adjustment, can guarantee simultaneously from common phase lens array for the first time
Column focus is coplanar, and focal point phase is identical.The present invention realizes that non-mechanical lens phase adjusts for the first time, the phase adjustment time
Short, self application is good, and common phase Adjustment precision λ/10 can be realized in ms.The present invention uses multiple automatic phase control units for the first time
The synthesis lens system with automatic phase control ability is formed, a kind of Large Aperture Lenses system realization automatic phase tune is proposed
The method of section.
Detailed description of the invention
Fig. 1 is a kind of automatic phase control unit composition figure of the present invention；
Fig. 2 is that a kind of automatic phase control unit of the present invention adjusts phase schematic diagram；
Fig. 3 is a kind of automatic phase control cell imaging testing result schematic diagram of the present invention.
Fig. 4 is that a kind of automatic phase control unit of the present invention synthesizes lens system phase modulation optical schematic diagram.
Specific embodiment
A kind of automatic phase control unit composition figure of the invention is as shown in Figure 1, entirely automatic phase control unit is by certainly
Common phase control assembly 1 and from common phase lens 2 form, wherein from inside common phase lens 2 be filled with conducting liquid and non-electrically conductive liquid,
It is controlled from common phase lens 2 by from common phase control assembly 1, makes that deformation occurs from 2 internal liquid interface of common phase lens, to realize phase
Position adjustment.
It include the first conducting liquid 3, the second conducting liquid 4, non-electrically conductive liquid 5, the first conducting liquid electricity from common phase lens 2
Pressure control system 6, the second conducting liquid voltage control system 7, first conducting solution the first interface 8, the second conducting solution first
Interface 9, the first conducting solution second contact surface 10, the second conducting solution second contact surface 11, shape fixing layer 12, electric insulation layer 13,
Sealant 14, transparent glass 15.
First conducting liquid 3, the second conducting liquid 4 are located at 5 two sides of non-electrically conductive liquid.Shape fixing layer 12 is located at certainly
On the outside of 2 non-light passing side surrounding of common phase lens.Shape fixing layer 12 is used to protect the fixed shape from common phase lens 2.Electric insulation layer
13 are located at 12 inside of shape fixing layer.Electric insulation layer 13 is used for when the first conducting liquid 3, the second conducting liquid 4 are powered, by it
It is electrically insulated with the external world.Sealant 14 is located at the inside of electric insulation layer 13.Sealant 13 is for leading the first conducting liquid 3, second
Electro-hydraulic body 4 and non-electrically conductive liquid 5 are isolated from the outside.Transparent glass 15 is located at from the two sides of common phase lens 2.Transparent glass 15 is put
It sets perpendicular to optical axis direction, light is passed through through the entrance of glass 15 or is pierced by from common phase lens 2.
A kind of automatic phase control unit of the invention adjusts phase schematic diagram as shown in Fig. 2, entire automatic phase control
System by from common phase control assembly 1, from common phase lens 2, the other parts of system, image checking and phase feedback system group
At.Based on dielectric electro-wetting principle, controlled from common phase lens 2 by from common phase control assembly 1, can making its internal structure, deformation occurs,
To realize phase adjustment.Light is after from common phase lens 2 and the other parts of system, by image checking to obtain light
Phase of line information, the directly output if meeting common phase and requiring require if being unsatisfactory for common phase through phase feedback system feedback electricity
Pressing adjustment signal to its control from common phase control assembly, is made, deformation occurs from 2 internal structure of common phase lens.First conducting solution
One interface 8 can be changed to the first conducting solution second contact surface 10 under the control of the first conducting liquid voltage control system 6, and second is conductive
The first interface of solution 9 can be changed to the second conducting solution second contact surface 11 under the control of the second conducting liquid voltage control system 7, from
And make to enter and change from the light transmission light path of common phase lens 2, to realize the phase adjustment of transmitted light.
A kind of automatic phase control cell imaging testing result schematic diagram of the present invention is as shown in figure 3, work as image-forming detecting system
When obtaining non-homogeneous, nonlinear type interference fringe, adjustment signal is sent to phase feedback system, to issue a command to from common phase
Control assembly 1 is adjusted to from common phase lens 2.First conducting liquid voltage control system 6 and the second conducting liquid voltage control
System 7 processed is voltage-regulating system.3 connection of first conducting liquid voltage control system 6 and the first conducting liquid, it is anti-according to phase
Feedback system semaphore request, first the first interface of conducting solution 8 of control are transformed to the first conducting solution second contact surface 10.Second is conductive
4 connection of liquid voltage control system 7 and the second conducting liquid is required according to phase feedback system signal, and control second is conductive molten
The first interface of liquid 9 is transformed to the second conducting solution second contact surface 11.Image-forming detecting system obtains new interference fringe image, if still
For non-homogeneous, nonlinear type interference fringe, then repeat above-mentioned adjusting, straight cause image-forming detecting system finally obtains uniform, straight
Line style interference fringe.
A kind of automatic phase control unit synthesis lens system phase modulation optical schematic diagram of the invention is as shown in figure 4, multiple
A synthesis aperture imaging system is constituted from common phase control assembly 1 and from common phase lens 2, is imaged instead of single heavy caliber saturating
Mirror adjusts the phase for entering the light of synthesis lens system in real time, achieves from common phase.According to certainly in synthesis lens system
2 position of common phase lens is different, the first conducting liquid 3 for each being filled from common phase lens 2, the second conducting liquid 4 and
The scale of construction of non-electrically conductive liquid 5 is different.By the light at synthesis aperture imaging system different location, by certainly total at the position
The light path formed after phase lens 2 is also different.From in 2 initial designs of common phase lens, can integrally it consider at different location from altogether
The liquid of phase lens 2 fills the parameters such as type, liquid loading, is implemented from common phase control assembly 1 to each with facilitating from common phase
The control of lens 2 finally makes the light through synthesis aperture imaging system realize common phase position at common focus.
It not only can be transmission-type from common phase lens involved in a kind of automatic phase control unit of the invention, it can also
Be it is reflective, when from common phase lens be overall deformation lens when, can be used as mirror lens realize light phase adjust.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (10)
1. a kind of automatic phase control unit, it is characterised in that: including from common phase control assembly (1) and from common phase lens (2)；From
It is filled with conducting liquid and non-electrically conductive liquid inside common phase lens (2), is controlled from common phase lens (2) by from common phase control assembly (1)
System, makes that deformation occurs from common phase lens (2) internal liquid interface, to realize phase adjustment.
2. a kind of automatic phase control unit according to claim 1, it is characterised in that: described to be wrapped from common phase lens (2)
Include the first conducting liquid (3), the second conducting liquid (4), non-electrically conductive liquid (5) and transparent glass (15)；First conducting liquid
(3), the second conducting liquid (4) is located at non-electrically conductive liquid (5) two sides；Transparent glass (15) is located at from common phase lens (2)
Two sides；Transparent glass (15) is disposed perpendicular to optical axis direction, and light, which is passed through, to be entered or be pierced by saturating from common phase through glass (15)
Mirror (2).
3. a kind of automatic phase control unit according to claim 2, it is characterised in that: further include being located at from common phase lens
(2) the outermost shape fixing layer (12) of non-light passing side surrounding, for protecting and fixing the shape from common phase lens (2).
4. a kind of automatic phase control unit according to claim 3, it is characterised in that: further include electric insulation layer (13)；
Electric insulation layer (13) is located on the inside of shape fixing layer (12)；Electric insulation layer (13) is used in the first conducting liquid (3), the second conduction
When liquid (4) is powered, it is electrically insulated with the external world.
5. a kind of automatic phase control unit according to claim 4, it is characterised in that: further include sealant (14)；It is close
Sealing (14) is located at the inside of electric insulation layer (13)；Sealant (14) is used for the first conducting liquid (3), the second conducting liquid
(4) and non-electrically conductive liquid (5) is isolated from the outside.
6. a kind of automatic phase control unit according to claim 2, it is characterised in that: described from common phase control assembly
It (1) include the first conducting liquid voltage control system (6), the second conducting liquid voltage control system (7)；First conducting liquid electricity
Pressure control system (6) and the first conducting liquid (3) connection；Second conducting liquid voltage control system (7) and the second conducting liquid
(4) connection；It is controlled by phase feedback system, the first conducting liquid voltage control system is adjusted separately according to phase-feedback signal instruction
System (6), second conducting liquid voltage control system (7) voltage, so as to adjust the first conducting liquid (3) and non-electrically conductive liquid (5)
Interface shape and the second conducting liquid (4) and non-electrically conductive liquid (5) interface shape are passed through with changing from common phase lens (2)
Light path, to adjust the phase of transmitted light.
7. a kind of automatic phase control unit according to claim 2, it is characterised in that: first conducting liquid (3)
It is conductive ions liquid or salting liquid with the second conducting liquid (4).
8. a kind of automatic phase control unit according to claim 2, it is characterised in that: the non-electrically conductive liquid (5) is
Non-polar oil solution or pressure-air.
9. a kind of automatic phase control method, it is characterised in that steps are as follows:
1) when first the first interface of conducting solution (8) and second the first interface of conducting solution (9) are in a certain position, light is worn
It crosses from common phase lens (2) focal imaging；
2) image-forming detecting system detects image, if detection obtains non-homogeneous, nonlinear type interference fringe, image checking system
System forms phase adjustment signal, sends the signal to phase feedback system；
3) phase feedback system feeds back to adjustment signal from common phase control assembly (1), by adjusting operating voltage, makes first to lead
Electric the first interface of solution (8) is adjusted to the first conducting solution second contact surface (10), second the first interface of conducting solution (9) is adjusted to
Second conducting solution second contact surface (11)；
4) light passes through from common phase lens (2) and is focused into new images；
5) image-forming detecting system detects new images, if detection obtains uniform, linear type interference fringe, phase adjustment is arrived
Position, if detection obtains non-homogeneous, nonlinear type interference fringe, image-forming detecting system forms phase adjustment signal again, and should
New signal is sent to phase feedback system, makes from common phase control assembly (1) to the first conducting solution second contact surface (10) and second
Conducting solution second contact surface (11) is adjusted again, until image-forming detecting system detects to obtain uniform, linear type interference fringe.
10. a kind of automatic phase control synthesizes lens system, it is characterised in that: any described including multiple claim 1-8
Automatic phase control unit adjusts the phase for entering the light of synthesis lens system instead of single heavy caliber imaging len in real time,
It realizes from common phase.
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| CN110161674A (en) * | 2019-04-30 | 2019-08-23 | 南京邮电大学 | Liquid lens |
| CN113238371A (en) * | 2021-02-08 | 2021-08-10 | 北京航空航天大学 | Electrowetting liquid lens with high stability and adjustable optical path |
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Application publication date: 20190503 |