CN205537984U - Imaging detection chip of local wavefront is measured to addressable - Google Patents
Imaging detection chip of local wavefront is measured to addressable Download PDFInfo
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- CN205537984U CN205537984U CN201521001838.9U CN201521001838U CN205537984U CN 205537984 U CN205537984 U CN 205537984U CN 201521001838 U CN201521001838 U CN 201521001838U CN 205537984 U CN205537984 U CN 205537984U
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Abstract
The utility model discloses an imaging detection chip of local wavefront is measured to addressable, add electric liquid crystal micro optical structure, the visible light detector of area array and drive accuse preprocessor module including the addressable, liquid crystal micro optical structure is divided the little optical block of a plurality of liquid crystal that can independently exert the electricity and drive the accuse signal, and the little optical block of each liquid crystal has the same shape of face and structure size, and it is liquid crystal microlens array piece to be added the little optical block of electric liquid crystal, and all the other do not add the little optical block of electric liquid crystal and are liquid crystal phase shift plate, the liquid crystal micro optical structure who is learned the massing by the liquid crystal shimmer will divide into the visible light detector piece of area array of equal shape of face and scale rather than the visible light detector of the area array that corresponds, and the visible light detector piece of each area array contains the detector of equivalent amount and the mode of arranging. The utility model discloses it selects and changes local wavefront measuring imaging detection efficiency, convenient to use, easy and conventional imaging optics system linking to have the addressable of execution.
Description
Technical field
This utility model belongs to imaging detection technical field, measures the imaging detection chip of local wavefront more particularly, to a kind of addressable.
Background technology
Day ground or deep space environment in, from the earth, the sun, celestial body, disturbance even fraudulence light source outgoing or the light wave of excitation, constitute the background light field that target is interdependent.Self structure and topographical information by reflection/refraction/scattering sunlight, moonlight, starlight or artificial light source emergent light, are embedded in fluctuation light field and are transported to imaging detection structure, realizing electrical image data by opto-electronic conversion and generate by object.It is said that in general, the light wave fields transporting target image information represents specific morphology wavefront and mobile sequence thereof in background and artificial optical environment, present the three-dimensional continuous morphology of assertive evidence.Owing to atmospheric flow field is in density, temperature, the aspect such as pressure and component often shows complexity, randomly, the most acutely change relatively by force, the turbulent flow of disordered motion, the complicated physical chemistry behavior of gas molecule such as ionization and discharge effect, typical camouflage, stealthy, deception, smog or sand and dust etc., the most often order about its dielectric properties of flow field and produce random change, light refractive index is made to present the time-varying of complexity, space-variant responds, cause light wavefront to produce local in delivering path or the variation of globality structure and morphology even distorts, and implant in electronic image information eventually through photonics image detection, image components is included: (one) image resolution ratio, contrast and definition；(2) target imaging position and possible degrees of offset；(3) flating or flicker level；(4) scalloping, distortion or alienation etc. produce impact, make imaging detection usefulness reduce and even lose.Up to now, the multiple modern image optics technical scheme taking into account photoelectricity one-tenth figure acquisition simultaneously and modulation wavefront has occurred, mainly include following a few class: the wavefront that () arranges in independent laser beam systematic survey local or narrow spatial domain transmits and evolution attribute, for it becomes graphic operation to perform physical guide based on wavefront modulation to adaptive optical imaging system；(2) the full spatial domain wavefront of instantaneous field of view is measured and resolves while performing imaging detection by adaptive optical imaging system, and point spread function based on target wave field rationally sharpens and guides wavefront modulation and guide digital image information to process；(3) it is that imaging system sets up wavefront module, by measuring wavefront and resolving point spread function, rationally sharpens based on priori or point spread function and process digital image information, efficiently perform into graphic operation.
Up to now, the adaptive optical imaging scheme adjusted is surveyed based on wavefront, some defects are still suffered from terms of the imaging detection of reply complex target and environment, it is mainly manifested in following aspect: (one) obtains wavefront transmission property based on independent beam, is only applicable to the light wave fields that spatial environments is relative with target clean, stable, gradual or instantaneous field of view is less for imaging detection；(2) generally instantaneous field of view is performed universe wavefront adaptive into image optical system and survey tune, it is difficult to resource is concentrated on and only needs to perform the area of space that local wavefront survey is adjusted；(3) generally can identify abnormal image liquid crystal micro-optic block based on acquired image information and include its rough orientation, but be difficult to be surveyed the wavefront of adjusting framework to perform corresponding to local exception image forming liquid crystal micro-optic block by conventional wavefront precisely survey tune；(4) cannot call the roll of the contestants in athletic events to initialize, examine or continuous updating wavefront sequence by Rapid Implementation wavefront space-variant, and find abnormal local wavefront region pre-interception, disturbance type or change situation；(5) the universe wavefront of instantaneous field of view is surveyed and is adjusted needs to take a large amount of e-sourcing, under random e-sourcing configures limited situation, fast-moving target or transient state physical and chemical process is difficult to launch real-time wave front data and measures, resolve and wavefront construction.It is badly in need of key technology at present to break through, search out new staring or modulation before imaging viewing field can be performed wavefront scanning survey, Local Wave, by imaging and the compatible functional micronano optical/photoelectricity framework of Local Wave pre-test that can call the roll of the contestants in athletic events, reach addressable real-time measurement, analysis and modulation wavefront, it is achieved the enhancing of imaging detection usefulness and detail characteristic and environmental characteristics to target carry out intelligent analysis, accept or reject or utilize this target.
Utility model content
For the disadvantages described above of prior art, this utility model provides a kind of addressable and measures the imaging detection chip of local wavefront.Load automatically controlled signal by addressable sequential and set up wavefront measurement mode, the local of capture target light wave or overall wavefront；Cutting off automatically controlled signal by addressable sequential and set up imaging detection mode, it is thus achieved that the general monoscopic image of target, this image also contains the local target image after the image definition corresponding with before measured Local Wave reduces.Realize the compatible timing acquisition of target one-tenth figure and addressable wavefront measurement.There is the advantage that detection usefulness is high, easy to use, the most optical system coupled with conventional imaging.
For achieving the above object, this utility model provides a kind of addressable and measures the imaging detection chip of local wavefront, it is characterised in that
Including liquid crystal micro optical structure, face battle array visible-light detector with drive control pretreatment module, wherein, liquid crystal micro optical structure is divided into the array liquid crystal micro-optic block that can independently execute powered on and off operation, each liquid crystal micro-optic block is liquid crystal microlens array block under sequential powers up state, is liquid crystal phase shift plate under sequential power-off state；
Liquid crystal micro optical structure mates with face battle array visible-light detector, and according to its liquid crystal micro-optic block size dough-making powder shape, face battle array visible-light detector is divided into multiple battle array visible-light detector blocks, each battle array visible-light detector block includes the detection unit of multiple array distribution that quantity is identical with arrangement mode, and each liquid crystal micro-optic block is corresponding with a face battle array visible-light detector block.
Under powering up state, one electrically-controlled liquid crystal microlens array block and a face battle array visible-light detector block constitute a wavefront measurement block, for the local light wave of target being separated into the sub-plane wave front that multiple inclined degree is different, and focus on further in the corresponding detection unit of the sub-face battle array visible-light detector corresponding to each liquid crystal microlens；Sub-face battle array visible-light detector is for being converted into the signal of telecommunication by the convergence light wave converged in each detection unit, through follow-up quantization, calibrate and resolve, obtain the position data of the detection unit that barycenter photosignal is belonged to, and then obtain the inclination data of corresponding sub-plane wave front；Data are converged in the inclination data of comprehensive each sub-plane wave front and the refractive power of imaging optical system, construct local wave front data and export.
Under power-off state, a liquid crystal phase shift plate and a face battle array visible-light detector block constitute a micro-optic/photonics image detection block, and liquid crystal phase shift plate is used for postponing target beam phase place；Face battle array visible-light detector is for being converted into the signal of telecommunication by the focusing light wave finally converged on the battle array visible-light detector of face after liquid crystal phase shift plate；Drive control pretreatment module to carry out quantifying and calibration process by the photosignal of opposite battle array visible-light detector, the photosignal of face battle array visible-light detector is belonged to once become graphic operation, obtains the general monoscopic image data of target；Sub-face battle array visible-light detector in each wavefront measurement block, the photosignal of each detection unit being additionally operable to resolve sub-wave front data collects, before constructing each wavelet of correspondence determined by its array scale of liquid crystal microlens and spatial resolution reduce after one-tenth diagram data and export.
Preferably, described battle array visible-light detector block block is m × n unit, and wherein, m, n are the integer more than 1.
Preferably, described sub-face battle array visible-light detector is p × q unit, and wherein, p, q are the integer more than 1.
Preferably, face battle array visible-light detector is r × s unit, wherein, r=m × p, s=n × q.
Preferably, described control pretreatment module of driving is additionally operable to provide into described battle array visible-light detector and liquid crystal micro optical structure drive and adjustment signal, drive described battle array visible-light detector and the work of liquid crystal micro optical structure, and the signal of telecommunication that described liquid crystal micro optical structure is carried out addressable powered up and down regulates and controls.
Preferably, described a kind of addressable measures the imaging detection chip of local wavefront, it is characterized in that, described driving have cured tailor-made algorithm in control pretreatment module, for resolving the position data of the detection unit that the photosignal of each sub-face battle array visible-light detector under wavefront measurement mode is belonged to, it is additionally operable to resolve the inclination data of corresponding sub-plane wave front, it is additionally operable to resolve the inclination correction data of the sub-plane wave front after the refractive power convergence data of integrated imaging optical system, and constructs local target wave front data and export.
Preferably, ceramic package is also included；Wherein, described liquid crystal micro optical structure, face battle array visible-light detector and drive control pretreatment module coaxially order be placed in ceramic package, described battle array visible-light detector drives the front of control pretreatment module described in being positioned at, and described liquid crystal micro optical structure is positioned at the front of described battle array visible-light detector and its light entrance face is exposed outside by the facial perforate of described ceramic package.
Preferably, drive control pretreatment module described in and be provided with the first port, fifth port and display lamp.
Preferably, described battle array visible-light detector is provided with the second port and the 4th port, and described liquid crystal micro optical structure is provided with the 3rd port.
Preferably, described first port is used for accessing power line to connect external power source, it is additionally operable to the work order receiving external equipment to visible-light detector with the input of liquid crystal micro optical structure, is additionally operable to described in output drive control pretreatment module and is supplied to described battle array visible-light detector and the driving of liquid crystal micro optical structure and adjustment signal.
Preferably, described first display lamp be used for indicating described in drive whether control pretreatment module is in normal operating conditions.
Preferably, what described second port drove that control pretreatment module is supplied to described battle array visible-light detector described in input drives control signal.
Preferably, what described 3rd port drove that control pretreatment module is supplied to described liquid crystal micro optical structure described in input drives control signal.
Preferably, described 4th port for export described battle array visible-light detector be supplied to described in drive control pretreatment module photosignal.
Preferably, described fifth port for input described battle array visible-light detector be supplied to described in drive control pretreatment module photosignal.
In general, by the contemplated above technical scheme of this utility model compared with prior art, by liquid crystal micro optical structure is divided into can powered up and down multiple liquid crystal micro-optic blocks of independent sequence it is coupled with face battle array visible-light detector, structure addressable performs local wavefront measurement and performs the chip architecture of conventional imaging detection.Under above-mentioned system, the Local Wave pre-test precision of target, the lenticular light of unit electrically-controlled liquid crystal the quantity focusing on usefulness and corresponding sub-face battle array visible-light detector determines, i.e. the array scale of detector is the biggest, the aggregate capabilities of sub-plane wave front is the strongest, and wavefront measurement precision is the highest；The conventional imaging space exploration resolution of target, is determined by the array scale of face battle array visible-light detector, i.e. array scale is the biggest, and spatial resolution/imaging resolution is the highest.The lenticular array scale of electrically-controlled liquid crystal determines the quantity of corresponding sub-face battle array visible-light detector or sub-plane wave front survey mass quantity.
By the contemplated above technical scheme of this utility model compared with prior art, have the advantages that
1, can perform to survey before addressable Local Wave to target wave field to adjust, by imaging viewing field performing local wavefront measurement, scanning, call the roll of the contestants in athletic events, stare or modulation, it is achieved the Local Wave pre-test of multifunction.
2, automatically controlled switching wavefront measurement and image mode, this utility model is by performing the powered on and off operation of sequential to liquid crystal micro optical structure, and automatically controlled switching Local Wave pre-test and conventional imaging detection operation, it is achieved the sequential between wavefront measurement mode and imaging detection mode is compatible and switches flexibly.
3, imaging detection becomes figure usefulness and wavefront measurement precision high, this utility model uses imaging detection and the local wavefront measurement framework including that battle array electrically-controlled liquid crystal lenticular electrically-controlled liquid crystal micro optical structure in face couples with face battle array visible-light detector, has high structure and stability and can the advantage of automatically controlled modulation.
4, adaptability is good, survey before target light field can be performed addressable Local Wave due to this utility model and adjust, can survey according to environment and target conditions flexible transformation wavefront and adjust region, detail characteristic and environmental characteristics to target carry out intelligent analysis and utilization based on wavefront properties, the advantage with target and good environmental adaptability.
5, easy to use, due to liquid crystal micro optical structure of the present utility model, face battle array visible-light detector with drive control pretreatment module and be integrated on a single chip, have and patch conveniently, the advantage easily coupled with imaging optical system, electronics and machinery coupling.
Accompanying drawing explanation
Fig. 1 is the structural representation of the imaging detection chip of a kind of addressable measurement local wavefront of this utility model embodiment；
In Fig. 1: 1-the first port, 2-the first display lamp, 3-drives control pretreatment module, 4-the second port, 5-face battle array visible-light detector, 6-the 3rd port, 7-liquid crystal micro optical structure, 8-light incidence window, 9-the 4th port, 10-fifth port, 11-ceramic package.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.As long as just can be mutually combined additionally, technical characteristic involved in each embodiment of this utility model disclosed below does not constitutes conflict each other.
Fig. 1 is the structural representation of the imaging detection chip of a kind of addressable measurement local wavefront of this utility model embodiment.A kind of addressable of this utility model embodiment is measured the imaging detection chip of local wavefront and is included: surveys before addressable Local Wave and adjusts and imaging detection structure.
Survey before addressable Local Wave to adjust and be positioned at ceramic package 11 with imaging detection framework, including: drive control pretreatment module 3, face battle array visible-light detector 5 and liquid crystal micro optical structure 7.Drive control pretreatment module 3, face battle array visible-light detector 5 and the coaxial order of liquid crystal micro optical structure 7 to be placed in ceramic package 11, wherein, face battle array visible-light detector 5 is positioned at the front driving control pretreatment module 3, and it is exposed outside by the facial perforate of ceramic package 11 that liquid crystal micro optical structure 7 is positioned at the front of face battle array visible-light detector 5 and its light entrance face.
Each power-off liquid crystal micro-optic block that independently adds in liquid crystal micro optical structure 7 is electrically-controlled liquid crystal microlens array block under sequential powers up state.Under powering up state, one electrically-controlled liquid crystal microlens array block and a face battle array visible-light detector block constitute a wavefront measurement block, for local target light wave being separated into the sub-plane wave front that multiple inclined degree is different, and focus on further in the corresponding detection unit of the sub-face battle array visible-light detector corresponding to each liquid crystal microlens；The all corresponding sub-face battle array visible-light detector of each unit lenticule in electrically-controlled liquid crystal microlens array, it includes the detection unit of multiple array distribution that quantity is identical with arrangement mode.Electrically-controlled liquid crystal microlens array block and sub-face battle array visible-light detector are m × n unit, and wherein, m, n are the integer more than 1.Sub-face battle array visible-light detector is p × q unit, and wherein, p, q are the integer more than 1, and such as, sub-face battle array visible-light detector can be 5 × 5 yuan, 9 × 9,12 × 12 yuan of even more large scale arrays.Sub-face battle array visible-light detector is placed at the focal plane of imaging optical system or the configuration of weak out of focus after coupling with electrically-controlled liquid crystal microlens array block.Electrically-controlled liquid crystal microlens array is for by the convergence light wave refocusing via imaging optical system, target light wave is separated into, by electrically-controlled liquid crystal microlens array, the sub-plane wave front that multiple inclined degree is different, and focuses on further in the corresponding detection unit of corresponding each sub-face battle array visible-light detector.
Face battle array visible-light detector 5 is for being converted into the signal of telecommunication by the convergence light wave converged on each visible-light detector, and by follow-up quantization and calibration, and its position data of detection unit that the photosignal passing through Solution operator face battle array visible-light detector is belonged to, obtain the inclination data of corresponding sub-plane wave front, data are converged in the inclination data of each sub-plane wave front of comprehensive sub-face battle array visible-light detector and the refractive power of imaging optical system, construct local target wave front data and export.
Driven the liquid crystal microlens of control by the signal of telecommunication that amplitude is different to sell off presenting different optics and focusing power.Utilize the electricity focusing attribute of liquid crystal microlens, according to target and background, it is possible to increase or reduce the measurement of dip angle scope of sub-plane wave front thus change measurement kind and the scope of wavefront；On the other hand, the ANOMALOUS VARIATIONS of wavefront can be carried out interpretation, early warning or school and adjust, the reliability of raising measurement wavefront and target and environmental suitability；By different electrically-controlled liquid crystal microlens array blocks being performed the space-variant power-up operations of sequential, target light field can be carried out quick wavefront to call the roll of the contestants in athletic events, set up primary wave presequence distributional pattern, the wavefront of detection is examined and sustainable renewal wavefront sequence, the abnormal local wavefront region emphasis exposed is carried out wavefront and surveys tune, obtain based on dynamic wavefront features and support wave front data based on image recognition Yu interpretation, and pre-interception, disturbance type or change situation, generally can identify abnormal image liquid crystal micro-optic block based on acquired image information and include its rough orientation；Surveyed by the wavefront of zonule and adjust, quickly set up the universe wavefront situation of target light field, and the Small object or local transient state physical and chemical process to rapid movement launches real-time wave front data and measure, resolve and wavefront construction.
Each independent liquid crystal micro-optic block in liquid crystal micro optical structure 7 is liquid crystal phase shift plate under sequential power-off state, and before being positioned at face battle array visible-light detector 5.Under power-off state, many liquid crystal phase shift plate and multiple battle array visible-light detector Block-matching.Only target beam is produced due to liquid crystal phase shift plate Phase delay, thus constitutes the micro-optic/photonics image detection block that can perform conventional imaging detection operation；Face battle array visible-light detector is for being converted into the signal of telecommunication by the focusing light wave finally converged on the battle array visible-light detector of face after liquid crystal phase shift plate；Drive control pretreatment module to operate for the photosignal of the detection unit of face battle array visible-light detector is belonged to Polaroid detection, carry out quantifying and calibration process by the photosignal of opposite battle array visible-light detector, obtain the general monoscopic image data of target；The sub-face battle array visible-light detector corresponding with each sub-face battle array electrically-controlled liquid crystal lenticule, the photosignal being additionally operable to use it for the detection unit that sub-plane wave front resolves collects, and constructs the one-tenth diagram data after that determined by sub-face battle array its array scale of electrically-controlled liquid crystal lenticule and corresponding with measuring sub-plane wave front reduction spatial resolution and exports.
Face battle array visible-light detector 5 is r × s unit, wherein, r=m × p, s=n × q, and such as, face battle array visible-light detector can be 512 × 512 yuan, 1024 × 1024 yuan, 2048 × 2048 yuan of even more large scale arrays.
Liquid crystal phase shift plate is sent into face battle array visible-light detector 5 after carrying out Phase delay via the convergence light wave of imaging optical system and is converted into the signal of telecommunication.
Drive control pretreatment module 3 and provide driving and adjustment signal for driving control liquid crystal micro optical structure 7 for face battle array visible-light detector 5 and addressable, drive surface battle array visible-light detector 5 works, and liquid crystal micro optical structure 7 performs that addressable is powered on and off, switching between electrically-controlled liquid crystal lenticule and liquid crystal phase shift plate, and carry out the signal of telecommunication that function rotates regulate and control controlling described liquid crystal micro optical structure 7.
Drive control pretreatment module 3 and be provided with the first port 1, fifth port the 10, first display lamp 2.Wherein, first port 1 drives control pretreatment module 3 for output and is supplied to addressable driving and the adjustment signal of face battle array visible-light detector 5 and liquid crystal micro optical structure 7, it is additionally operable to receive the work order that external equipment inputs to face battle array visible-light detector 5 and liquid crystal micro optical structure 7, fifth port 10 is supplied to drive the photooptical data of control pretreatment module 3 for input face battle array visible-light detector 5, for instruction, first display lamp 2 drives whether control pretreatment module 3 is in normal operating conditions, drive control pretreatment module 3 and be in normal operating conditions, then the first display lamp 2 flashes, otherwise extinguish.
Face battle array visible-light detector 5 is provided with the second port the 4, the 4th port 9.Wherein, the second port 4 drives control pretreatment module 3 for input and is supplied to driving and the adjustment signal of face battle array visible-light detector 5, and the 3rd port 9 is supplied to drive the photooptical data of control pretreatment module 3 for output face battle array visible-light detector 5.
Above-mentioned first port the 1, second port the 4, the 3rd port the 6, the 4th port 9, fifth port the 10, first display lamp 2 are all exposed outside by the facial perforate of ceramic package 11.
Illustrate that a kind of addressable of this utility model embodiment measures the work process of the imaging detection chip of local wavefront below in conjunction with Fig. 1.
First connect the first port the 1, second port 4 and the 3rd port 6 with parallel signal and data wire, be simultaneously connected with parallel communication line to the first port 1, connect the 4th port 9 and fifth port 10 with parallel data line.Being sent into electric power starting by parallel communication line by the first port 1 to instruct, detector starts self-inspection, now the first display lamp 2 hook switch flash, and self-inspection is extinguished by rear first display lamp 2, and detector and liquid crystal micro optical structure enter duty.Sent into, by the first port 1, instruction of starting working by parallel communication line, drive control liquid crystal micro optical structure and perform addressable powered on and off operation.Powering up the face battle array electrically-controlled liquid crystal lenticule that liquid crystal micro-optic block is converging beam under state, the liquid crystal micro-optic block under power-off state is the liquid crystal phase shift plate postponing phase of light wave.Drive control pretreatment module 3 through the first port 1, second port 4 and the 3rd port 6, input to face battle array visible-light detector 5 and liquid crystal micro optical structure 7 and drive and adjustment signal, face battle array visible-light detector 5 through the 4th port 9 to drive control pretreatment module 3 output photoelectric signal data, photosignal data control, through driving, the local wave front data and conventional plane destination image data obtained after pretreatment module 3 processes, this data set includes by the corresponding with before Local Wave of the face battle array visible-light detector block output performing local wavefront measurement and has dropped clear local view data and exported by port 1.
The operation principle of the imaging detection chip that this utility model addressable measures local wavefront is as follows: face battle array visible-light detector couples with liquid crystal micro optical structure, is placed at the focal plane of imaging optical system or the configuration of weak out of focus.(n, m-1) in liquid crystal micro optical structure, (n, m) (n, m+1) (n, m+2) liquid crystal micro-optic block the most powered on and off are driven control by independent.
(n, and (n m), m+2) the liquid crystal micro optical structure of liquid crystal micro-optic block is electrically-controlled liquid crystal microlens array under sequential powers up state, and sub-face its each unit lenticule of battle array electrically-controlled liquid crystal lenticule of 3 × 3 yuan in each liquid crystal micro-optic block is corresponding with 5 × 5 yuan of sub-face battle array visible-light detectors.The sub-plane wave front that the battle array electrically-controlled liquid crystal lenticule segmentation of quilt face is formed, is focused in the detection unit of 5 × 5 yuan of sub-face battle array visible-light detectors by unit liquid crystal microlens.Sub-plane wave front directional focusing different for inclined degree is detected in unit by sub-face battle array electrically-controlled liquid crystal lenticule the corresponding of sub-face battle array visible-light detector.Drive control pretreatment module by extract the detection unit of sub-face battle array visible-light detector photosignal and quantified, calibrate and resolve, obtain the detection unit position data that focal beam spot barycenter is belonged to, and then obtain the sub-plane wave front inclination value relative to plane of incidence, data are converged in sub-plane wave front inclination data and the refractive power of imaging optical system that comprehensive sub-face battle array electrically-controlled liquid crystal lenticule is split, reconstruct the local emerging wavefront data of target and export.
The liquid crystal micro optical structure of (n, m-1) and (n, m+1) liquid crystal micro-optic block is being liquid crystal phase shift plate under sequential power-off state.Each liquid crystal phase shift plate face battle array visible-light detector with 15 × 15 yuan is corresponding.Local incident wave beam is injected in the detection unit of 15 × 15 yuan of face battle array visible-light detectors after being postponed by liquid crystal phase shift plate, form image conversion focal beam spot and quilt cover battle array visible-light detector is converted into the signal of telecommunication, drive control pretreatment module by photosignal being quantified and calibration process, obtain the general monoscopic image data of target and export.
The functional focal spot arrangement of Local Wave pre-test and acquisition image information that this utility model addressable measures the imaging detection chip of local wavefront is: under measuring wavefront mode, the sub-face battle array electrically-controlled liquid crystal lenticule of 3 × 3 yuan is corresponding with the sub-face battle array visible-light detector of 15 × 15 yuan of scales, constitutes the Local Wave pre-test block of target.Each unit electrically-controlled liquid crystal lenticule represents the convergence speckle distributional pattern that position is different.Under image mode, the image conversion focus arrangement form on the battle array visible-light detector of face, form, by opto-electronic conversion, the planar target image that a width is conventional.Addressable of the present utility model measures the imaging detection chip of local wavefront, use the framework that liquid crystal micro optical structure couples with face battle array visible-light detector, by the powered up and down operation of addressable sequential, carry out the addressable Local Wave pre-test of sequential and target becomes graphic operation, the emerging wavefront of capture target and plane picture, it is achieved conventional plane imaging and the time-series fusion of Local Wave pre-test interested.There is detection usefulness high, easy to use, easily mate, with conventional imaging optical system, electronics and machinery, the advantage coupled.
Those skilled in the art is easy to understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (8)
1. the imaging detection chip of an addressable measurement local wavefront, it is characterised in that include that addressable powers up liquid crystal micro optical structure, face battle array visible-light detector and drives control pretreatment module, wherein,
Described addressable powers up liquid crystal micro optical structure and is divided into the liquid crystal micro-optic block of multiple array distribution, each liquid crystal micro-optic block has identical face shape and physical dimension, for liquid crystal microlens array block under sequential powers up state, it is liquid crystal phase shift plate under sequential power-off state；
Described addressable powers up liquid crystal micro-optic block size and the form that liquid crystal micro optical structure is divided according to it, corresponding face battle array visible-light detector is divided into the face battle array visible-light detector block of equal face shape and scale, and each battle array visible-light detector block includes the detection unit of multiple array distribution that quantity is identical with arrangement mode；
Described addressable powers up liquid crystal micro optical structure and couples with described battle array visible-light detector coupling, each liquid crystal micro-optic block is corresponding with a face battle array visible-light detector block, a liquid crystal microlens array block and a face battle array visible-light detector block under powering up state constitute a wavefront measurement block, and a liquid crystal phase shift plate and a face battle array visible-light detector block under power-off state constitute a conventional imaging detection block；
Described liquid crystal microlens array block for being separated into the sub-plane wave front that multiple inclined degree is different by the local light wavefront of target, and focuses on further in the corresponding photosensitive unit of the sub-face battle array visible-light detector corresponding to each liquid crystal microlens；
Described battle array visible-light detector is for being converted into the signal of telecommunication and through follow-up quantization and calibration by the light wave that converges converged on each detector, and by resolving the detection unit position data that the photosignal of each sub-face battle array visible-light detector is belonged to, obtain the inclination data of corresponding sub-plane wave front, data are converged in the inclination data of comprehensive each sub-plane wave front and the refractive power of imaging optical system, construct local wave front data and export；
Described battle array visible-light detector is additionally operable to collect the photosignal carrying out wavefront measurement, constructs the one-tenth diagram data after the corresponding measurement wavefront and spatial resolution reduction determined by electrically-controlled liquid crystal microlens array block and exports；
Described liquid crystal phase shift plate is used for postponing target beam phase place and coupling with face battle array visible-light detector block, constitutes the micro-optic/photonics image detection block under imaging detection mode.
A kind of addressable the most as claimed in claim 1 measures the imaging detection chip of local wavefront, it is characterized in that, by described liquid crystal micro-optic block is carried out the powered on and off operation of addressable sequential, completing can switching between the selection of liquid crystal micro-optic block of powered on and off operation and wavefront measurement mode and imaging detection mode.
A kind of addressable the most as claimed in claim 1 measures the imaging detection chip of local wavefront, it is characterised in that described liquid crystal micro-optic block and described battle array visible-light detector block are m × n unit, and wherein, m, n are the integer more than 1.
A kind of addressable the most as claimed in claim 1 measures the imaging detection chip of local wavefront, it is characterised in that described sub-face battle array visible-light detector is p × q unit, and wherein, p, q are the integer more than 1.
A kind of addressable the most as claimed in claim 1 measures the imaging detection chip of local wavefront, it is characterised in that described battle array visible-light detector is R × S unit, wherein, R=m × p, S=n × q.
A kind of addressable the most as claimed in claim 1 measures the imaging detection chip of local wavefront, it is characterized in that, described control pretreatment module of driving is additionally operable to provide into described battle array visible-light detector and liquid crystal micro optical structure drive and adjustment signal, drive described battle array visible-light detector and the work of liquid crystal micro optical structure, and the signal of telecommunication that described liquid crystal micro optical structure carries out the powered up and down operation of addressable regulates and controls.
7. a kind of addressable as according to any one of claim 1 to 6 measures the imaging detection chip of local wavefront, it is characterised in that also include ceramic package；Wherein, described liquid crystal micro optical structure, face battle array visible-light detector and drive control pretreatment module coaxially order be placed in ceramic package, described battle array visible-light detector drives the front of control pretreatment module described in being positioned at, and described liquid crystal micro optical structure is positioned at the front of described battle array visible-light detector and its light entrance face is exposed outside by the facial perforate of described ceramic package.
A kind of addressable the most as described in claim 7 measures the imaging detection chip of local wavefront, it is characterized in that, described control pretreatment module of driving is provided with the first port, fifth port and the first display lamp, described battle array visible-light detector is provided with the second port and the 4th port, and described liquid crystal micro optical structure is provided with the 3rd port；
Described first port is used for accessing power line to connect external power source, it is additionally operable to the work order receiving external equipment to visible-light detector with the input of liquid crystal micro optical structure, is additionally operable to described in output drive control pretreatment module and is supplied to described battle array visible-light detector and the driving of liquid crystal micro optical structure and adjustment signal；
Described first display lamp drives whether control pretreatment module is in normal operating conditions described in being used for indicating；
What described second port drove that control pretreatment module is supplied to described battle array visible-light detector described in input drives control signal；
What described 3rd port drove that control pretreatment module is supplied to described liquid crystal micro optical structure described in input drives control signal；
Described 4th port for export described battle array visible-light detector be supplied to described in drive control pretreatment module photosignal；
Described fifth port for input described battle array visible-light detector be supplied to described in drive control pretreatment module photosignal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105509894A (en) * | 2015-12-07 | 2016-04-20 | 华中科技大学 | Liquid crystal base image and wavefront dual-mode electrical-modulation imaging detection chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509894A (en) * | 2015-12-07 | 2016-04-20 | 华中科技大学 | Liquid crystal base image and wavefront dual-mode electrical-modulation imaging detection chip |
| CN105509894B (en) * | 2015-12-07 | 2019-11-12 | 华中科技大学 | A kind of liquid crystal basic image and wavefront bimodulus electricity are tuned into as detection chip |
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