CN105609516A - Image sensor and output method, phase focusing method, imaging apparatus and terminal - Google Patents
Image sensor and output method, phase focusing method, imaging apparatus and terminal Download PDFInfo
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- H—ELECTRICITY
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Abstract
The invention discloses an image sensor. The image sensor comprises a photosensitive unit array, an optical filtering unit array and a micro-mirror unit array, wherein the micro-mirror unit array is positioned on the optical filtering unit array; each micro-mirror unit covers an optical filtering unit and a photosensitive unit; each photosensitive unit comprises multiple photosensitive pixels; each micro-mirror unit comprises a first micro-mirror and multiple second micro-mirrors; the second micro-mirrors are positioned between the first micro-mirror and the optical filtering unit array; and the multiple second micro-mirrors are arranged corresponding to the multiple photosensitive pixels. The image sensor can avoid light ray crosstalk, and the imaging quality and phase detection accuracy can be improved; and the invention also discloses a pixel information output method for the image sensor, a phase focusing method, an imaging apparatus and a terminal.
Description
Technical field
The invention belongs to vision facilities technical field, relate in particular to a kind of imageing sensor, and a kind of phase place focusing method,Pixel Information output intent, imaging device and the terminal of imageing sensor.
Background technology
At present, be all the corresponding pixel cell of a lenticule for the dot structure of the sensor of mobile phone camera, existTwo problems, the first, the size of the pixel cell of mobile phone camera sensor is more and more less, is unfavorable for the image quality of picture.The second, lenticule receives the directive light of institute for same pixel cell imaging, because pixel cell is without distinguishing received lightThe direction of line, so cannot meet the condition of relative detection, can not provide basis for relatively focusing.
Summary of the invention
For the problem in correlation technique, if use multiple photosensitive pixels to share a micro mirror, close although can realize pixelAnd and the function of phase-detection, but owing to only having a micro mirror, the light converging is concentrated in the middle of pixel, causes adjacentBetween pixel, crosstalk and become large, affect the precision of phase-detection.
The present invention is intended to solve at least to a certain extent one of technical problem in correlation technique. For this reason, the present invention need to carryGo out a kind of imageing sensor, this imageing sensor, can avoid the light between pixel to crosstalk, for improving picture quality and phasePosition accuracy of detection provides hardware foundation.
The present invention also propose in addition a kind of imageing sensor Pixel Information output intent, phase place focusing method, imaging device andTerminal.
In order to address the above problem, one aspect of the present invention proposes a kind of imageing sensor, and this imageing sensor comprises: sensitization listElement array; Be arranged on the filter unit array on described photosensitive unit array; Micro mirror unit array, described micro mirror unit arrayBe positioned on described filter unit array, each micro mirror unit covers a filter unit and a photosensitive unit, each sensitizationUnit comprises multiple photosensitive pixels, and described micro mirror unit comprises the first micro mirror and multiple the second micro mirror, and described the second micro mirror is positioned atBetween described the first micro mirror and described filter unit array, the setting corresponding to described multiple photosensitive pixels of described multiple the second micro mirrors.
Imageing sensor of the present invention, based on the two-lens structure that adopts the first micro mirror and multiple the second micro mirror formation micro mirror unit,The corresponding filter unit of each micro mirror and multiple photosensitive pixel, the setting corresponding to photosensitive pixel of the second micro mirror, can avoid pictureLight between element is crosstalked, and provides hardware foundation for improving image quality and meeting phase place focus condition.
In some embodiments of the invention, described photosensitive unit comprises 2*2 described photosensitive pixel.
In some embodiments of the invention, described filter unit array comprises Bayer array.
In order to address the above problem, one aspect of the present invention proposes a kind of Pixel Information output intent of imageing sensor, wherein,Described imageing sensor comprises: photosensitive unit array, filter unit array and micro mirror unit array, and described in micro mirror unit arrayOn filter unit array, each micro mirror unit covers a filter unit and a photosensitive unit, and each photosensitive unit comprisesMultiple photosensitive pixels, described micro mirror unit comprises the first micro mirror and multiple the second micro mirror, described the second micro mirror is positioned at described firstBetween micro mirror and described filter unit array, the setting corresponding to described multiple photosensitive pixels of described multiple the second micro mirrors, described sideMethod comprises the following steps: determine output mode according to model selection instruction; Control described photosensitive unit array exposure, and readThe output of described photosensitive unit array, wherein, in the time selecting the first output mode, controls the multiple of same described photosensitive unitThe Pixel Information of photosensitive pixel merges output.
The Pixel Information output intent of imageing sensor of the present invention, based on adopting the first micro mirror and multiple the second micro mirror to form micro-The two-lens structure of mirror unit, the corresponding filter unit of each micro mirror and multiple photosensitive pixel, the second micro mirror and photosensitive pixelCorresponding setting, can avoid the light between pixel to crosstalk, in the time selecting the first output mode, by the sense of same photosensitive unitThe Pixel Information of light pixel merges output, compared with the output of single photosensitive unit in correlation technique, can improve imaging sensitiveDegree and signal to noise ratio, improve image quality.
In some embodiments of the invention, in the time selecting the second output mode, by the photosensitive pixel of same described photosensitive unitRespectively separately output of Pixel Information.
And then, in the time selecting described the second output mode, become according to the Pixel Information of the photosensitive pixel of described photosensitive unitPicture light is distinguished and is obtained phase information; And carry out phase place focal adjustment according to described phase information.
In order to address the above problem, the present invention on the other hand embodiment also proposes a kind of phase place focusing method, and the method comprises:Imageing sensor is provided, and described imageing sensor comprises: photosensitive unit array, filter unit array and micro mirror unit array,Micro mirror unit array is positioned on described filter unit array, and each micro mirror unit covers a filter unit and a sensitization listUnit, each photosensitive unit comprises multiple photosensitive pixels, described micro mirror unit comprises the first micro mirror and multiple the second micro mirror, described inThe second micro mirror between described the first micro mirror and described filter unit array, described multiple the second micro mirrors and described multiple sensitizationPixel is corresponding to be arranged; Control described photosensitive unit array exposure, and the output of reading described photosensitive unit array, wherein, willThe Pixel Information of multiple photosensitive pixels of same described photosensitive unit is output separately respectively; According to the light-sensitive image of described photosensitive unitThe Pixel Information of element obtains phase information, and carries out phase place focal adjustment according to described phase information.
According to phase place focusing method of the present invention, based on adopting the first micro mirror and multiple the second micro mirror to form the thoroughly two of micro mirror unitMirror structure, the corresponding filter unit of each micro mirror and multiple photosensitive pixel, the setting corresponding to photosensitive pixel of the second micro mirror, canTo avoid the light between pixel to crosstalk, by the output separately respectively of the Pixel Information of multiple photosensitive pixels of same photosensitive unit,In the time of out-of-focus appearance, each photosensitive unit can obtain the light signal of different directions, thereby for phase place focusing provides condition,And then can obtain phase information to realize phase place focusing, and phase-detection precision improves.
Another aspect of the present invention embodiment proposes a kind of imaging device, and this imaging device comprises: above-mentioned imageing sensor;And control module, described control module is determined output mode according to model selection instruction, controls described photosensitive unit array exposure,And the output of reading described photosensitive unit array, wherein, in the time selecting the first output mode, described control module control is sameThe Pixel Information of multiple photosensitive pixels of described photosensitive unit merges output.
Imaging device of the present invention, based on the structure of imageing sensor, can avoid the light between pixel to crosstalk, and controls mouldThe Pixel Information of the photosensitive pixel of same photosensitive unit is merged output by piece, with the output phase of single photosensitive unit in correlation techniqueRatio, can improve imaging sensitivity and signal to noise ratio, improves image quality.
Wherein, in the time selecting the second output mode, the picture of the photosensitive pixel of the same described photosensitive unit of described control module controlPrime information is output separately respectively.
In some embodiments of the invention, in the time selecting the second output mode, described control module, according to described sensitization listThe Pixel Information of multiple photosensitive pixels of unit is carried out the differentiation of imaging light to obtain phase information, and according to described phase difference letterBreath carries out phase place focal adjustment.
Based on above-mentioned imaging device, another aspect of the invention also proposes a kind of terminal, and this terminal comprises above-mentioned imaging device.
This terminal, can take pictures, and image quality improves, and has phase-detection function, and phase-detection precision improves.
Another aspect of the invention also proposes a kind of imaging device, and this imaging device comprises above-mentioned imageing sensor and control module,Photosensitive unit array exposure described in described control module control, and the output of reading described photosensitive unit array, wherein, will be withThe Pixel Information of multiple photosensitive pixels of photosensitive unit output separately respectively described in one, and according to the light-sensitive image of described photosensitive unitThe Pixel Information of element is carried out the differentiation of imaging light to obtain phase information, and carries out phase place pair according to described phase informationBurnt adjusting.
Image-forming apparatus according to the present invention, based on the structure of imageing sensor, control module is by the light-sensitive image of same photosensitive unitThe Pixel Information of element is output separately respectively, and in the time of out-of-focus appearance, each photosensitive unit can obtain the light signal of different directions,Thereby for phase place focusing provides condition, can avoid the light between pixel to crosstalk, improve phase-detection precision.
One side more of the present invention also proposes a kind of terminal, and this terminal comprises the imaging device of above-mentioned aspect. This terminal, hasPhase place focus function, phase place focusing precision improves.
In some embodiments of the invention, described terminal comprises mobile phone.
In some embodiments of the invention, described imaging device comprises the preposition camera of described mobile phone.
Brief description of the drawings
Fig. 1 is the block diagram of imageing sensor according to an embodiment of the invention;
Fig. 2 is the schematic diagram of the filter unit array of employing Bayer array according to an embodiment of the invention;
Fig. 3 is the schematic diagram of the filter unit array of employing Bayer array according to an embodiment of the invention;
Fig. 4 is according to the imaging schematic diagram of a specific embodiment of the present invention;
Imaging schematic diagram in Fig. 5 correlation technique;
The flow chart of the Pixel Information output intent of Fig. 6 imageing sensor according to an embodiment of the invention;
(1) in Fig. 7 and (2) are according to the imaging light input schematic diagram in correlation technique;
Fig. 8 is the flow chart of phase place focusing method according to an embodiment of the invention;
Fig. 9 is the block diagram of imaging device according to an embodiment of the invention; And
Figure 10 is the block diagram of terminal according to an embodiment of the invention.
Reference numeral:
Terminal 2000. imaging devices 1000, imageing sensor 100,
Photosensitive unit array 10, filter unit array 20, micro mirror unit array 30, photosensitive pixel 11, filter unit 21 andThe first micro mirror 31 and the second micro mirror 32, filtering structure 22.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, wherein identical from start to finishOr similarly label represents same or similar element or has the element of identical or similar functions. Below by retouching with reference to accompanying drawingThe embodiment stating is exemplary, is intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
While realizing phase-detection function for the shared micro mirror of multiple photosensitive pixels, the problem of crosstalking between pixel,The application proposes double micro lens design, makes to converge light and is dispersed in each pixel cell surface, avoids crosstalking, and promotes phase placeThe precision detecting, improves image quality.
Fig. 1 is the block diagram of imageing sensor according to an embodiment of the invention, as shown in Figure 1, and this imageing sensor 100Comprise photosensitive unit array 10, filter unit array 20 and micro mirror unit array 30.
Wherein, micro mirror unit array 30 is positioned on filter unit array 20, and each micro mirror unit covers a filter unit21 and a photosensitive unit, each photosensitive unit comprises multiple photosensitive pixels 11. Each micro mirror unit comprises the first micro mirror 31Between the first micro mirror 31 and filter unit array 20, multiple second micro-with multiple the second micro mirror 32, the second micro mirrors 32Mirror 32 setting corresponding to multiple photosensitive pixels 11.
In some embodiments, filter unit array 20 comprises Bayer array (Bayerpattern). Adopt Bayer structureCan adopt conventional needle to process picture signal to the algorithm of Bayer structure, thereby not need to do on hardware configuration large adjustment.
Shown in Fig. 2 and Fig. 3, in Bayer structure, 2*2 filter unit 21 forms filtering structure 22,2*2 filterLight unit 21 is respectively green, red, blue, green filter unit 21, in traditional sensitization cell array 10 structures,The corresponding photosensitive pixel 11 of each filter unit 21 and image pixel. In embodiments of the present invention, filter unit battle arrayRow 20 adopt Bayer structure, and different, and the corresponding multiple photosensitive pixels 11 of each filter unit 21 are corresponding four senses for exampleLight pixel 11, the i.e. filter unit 21 of multiple photosensitive pixel 11 corresponding same colors.
Can find out, in an embodiment of the present invention, adopt double micro lens design, first micro mirror 31 covers an optical filteringUnit 21 and a photosensitive unit, and on the filter unit 21 of the each photosensitive pixel 11 of correspondence, increase by second micro mirror more32, form two micro-mirror structure, the second micro mirror 32 of increase can play the effect of light splitting, makes to see through the light of the first micro mirror 31Can not drop on the adjoining edge zone of multiple adjacent photosensitive pixels 11, but after again focusing on by the second micro mirror 32,Drop on the central area of each corresponding photosensitive pixel 11, thereby can reduce crosstalking between adjacent photosensitive pixel 11.
In a specific embodiment of the present invention, photosensitive unit comprises 2*2 photosensitive pixel 11, is illustrated in figure 4 rootAccording to the imaging schematic diagram of one embodiment of the present of invention, wherein, 4 adjacent photosensitive pixels 11 share first micro mirror 31,And on four photosensitive pixels 11 again correspondence four the second micro mirrors 32 are set. Fig. 5 is the imaging schematic diagram in correlation technique,Wherein, the photosensitive pixel 11 of four same colors shares first micro mirror 31, the first micro mirrors 31 by the imaging light of incidentConverge, the light converging is concentrated in the adjoining edge zone of adjacent photosensitive pixel 11, causes between neighbor and goes here and thereDisturb and become large. And in the application, as shown in Figure 4, design by double micro lens, in 31 times each sensitization of correspondence of the first micro mirrorPixel 11 arranges the second micro mirror 32, the second micro mirrors 32 and plays the effect of light splitting again, imaging light is focused to again correspondingThe photosensitive region center of photosensitive pixel 11, can reduce crosstalking between adjacent photosensitive pixel 11, is improving picture qualityAnd the precision of phase-detection provides hardware foundation.
Describe based on the above-mentioned structure to imageing sensor, the imageing sensor below one aspect of the present invention embodiment being proposedPixel Information output intent describes.
As shown in Figure 6, the Pixel Information output intent of this imageing sensor comprises the following steps:
S1, determines output mode according to model selection instruction.
In an embodiment of the present invention, output module comprises the first output mode and the second output mode, wherein, and first modeCan be understood as the output mode proposing for improving imaging sensitivity and signal to noise ratio aspect, the second pattern can be understood as forThe output mode that phase place focusing and depth of view information test aspect propose.
S2, controls the exposure of photosensitive unit array, and the output of reading photosensitive unit array, wherein, is selecting the first output mouldWhen formula, the Pixel Information of the photosensitive pixel of same photosensitive unit is merged to output.
Particularly, in the time that the Pixel Information of the multiple photosensitive pixels in photosensitive unit corresponding to same micro mirror unit merges output,Compared to the output signal of the corresponding photosensitive pixel of a micro mirror, multiple for example N photosensitive pixel merging output signals are suitableIn having increased N doubly, because noise is directly proportional to the square root of signal, i.e. nosie ∝ (Signal)1/2So signal becomes formerDoubly, noise only has original N to the N coming1/2Doubly, imaging sensitivity and the signal to noise ratio of image have corresponding lifting.
As shown in Figure 1 and Figure 4, wherein, the corresponding filter unit of the micro mirror unit of two micro-mirror structure and four sensitizationPixel. As shown in Figure 5, wherein, the corresponding filter unit of micro mirror and a photosensitive pixel, light see through micro mirror itAfter, converge at the central area of single photosensitive pixel. If the Pixel Information of four photosensitive pixels merges defeated in Fig. 1 and Fig. 4Go out, signal becomes 4 times of the output signal of dot structure shown in Fig. 5, and noise only has 2 times of dot structure in Fig. 5, because ofAnd the sensitivity of image and signal to noise ratio have corresponding lifting, adopt two micro-mirror structure, can also reduce between photosensitive pixelLight is crosstalked, and improves image quality.
Can find out, the Pixel Information output intent of the imageing sensor of the embodiment of the present invention, based on adopting the first micro mirror and manyIndividual the second micro mirror forms the two-lens structure of micro mirror unit, the corresponding filter unit of each micro mirror and multiple photosensitive pixel, theThe setting corresponding to photosensitive pixel of two micro mirrors, can avoid the light between neighbor to crosstalk, in the time selecting the first output mode,The Pixel Information of the photosensitive pixel of same photosensitive unit is merged to output, compared with the output of single photosensitive unit in correlation technique,Can improve imaging sensitivity and signal to noise ratio, improve image quality.
For the condition that meets phase-detection is carried out phase place focusing, in the time selecting the second output mode, control same photosensitive unitThe respectively separately output of Pixel Information of photosensitive pixel. And then, become according to the Pixel Information of the photosensitive pixel of photosensitive unitDistinguish to obtain the phase information of imaging as light; Carry out phase place focal adjustment according to phase information.
Known according to relevant knowledge, for the dot structure shown in Fig. 5, the corresponding filter unit of micro mirror andA photosensitive pixel, the in the situation that of focusing, as shown in Fig. 7 (1), imaging light focuses on photosensitive pixel through micro mirrorImaging, and the in the situation that of out of focus, as shown in Fig. 7 (2), imaging divergence of beam, each micro mirror receives the light of multiple directionsLine is for the imaging of the corresponding photosensitive pixel in below, because same photosensitive pixel can not district office receives the direction of light, so nothingMethod meets the condition relatively detecting. In correlation technique, usually, in order to realize PDAF (PhaseDetectionAutoFocus, phase-detection is focused automatically), conventionally utilize the photosensitive pixel structural design of adjacent in imageing sensor and paired setting(claim again to cover pixel, maskedpixels, covers dot structure more complicated compared to common photosensitive dot structure, conventionallyNeed to change common photosensitive this body structure of pixel or in photosensitive pixel structure, increase separately a light occlusion part, to makeDirective covers the light on specific direction in the multiple directions light in pixel can not arrive the sensitization part of covering pixel, and removesLight outside specific direction can arrive the sensitization part of covering pixel, in other words, cover pixel and be generally, neighbourNear and symmetrical setting, the pixel of covering arranging in pairs separates for the light to multiple directions), directive is arranged in pairsThe imaging beam covering in the multiple directions in pixel be separated into such as left and right two parts, by contrasting left and right two parts lightPhase difference (by gathering the output of covering pixel of paired setting) after line imaging calculates the distance that camera lens need to move.
And in an embodiment of the present invention, cover a filter unit and photosensitive unit based on each micro mirror unit, and each senseLight unit comprises multiple photosensitive pixels, i.e. the corresponding multiple photosensitive pixels of each micro mirror unit, so each the first micro mirror receivesMultiple light for the imaging of multiple photosensitive pixels, and by the second micro mirror, light is focused to corresponding photosensitive pixel againUpper, can avoid the light between photosensitive pixel to crosstalk. Controlling the Pixel Information of multiple photosensitive pixels of same photosensitive unit dividesExport not separately, can obtain the light signal of multiple directions, can find out that said structure has played the work of separate imaging light beamWith, and then, can identify imaging light according to the output of the Pixel Information of multiple photosensitive pixels of each photosensitive unit,Can obtain the phase information of image by the light signal contrast of different directions, further according to phase informationObtain the range information of shot object, test data basis is provided for phase place focusing and depth of view information. Obviously, the invention processIn example, only need to utilize the matching design of micro mirror unit, filter unit and photosensitive unit, just can realize the inspection of relative focusingSurvey, and without changing common photosensitive this body structure of pixel or increase separately a light occlusion part in photosensitive pixel structure,The implementation that focusing detects is relatively also simpler.
For example, as shown in Figure 4, in the time that the Pixel Information of four photosensitive pixels of each photosensitive unit is read respectively, according to fourThe Pixel Information output of photosensitive pixel can be obtained the light signal of different directions, the light signal of for example upper and lower, left and right,By the light signal contrast to different directions, can obtain the phase information of entire image, and then can be by phase informationBe converted to focusing range information, realize phase place focusing according to the position of focusing range information adjustable lens.
Put it briefly, the Pixel Information output intent of the imageing sensor of the embodiment of the present invention is many based on each micro mirror unit correspondenceThe setting of individual photosensitive pixel, can realize two kinds of duties, and a kind of duty is, multiple light-sensitive images of each photosensitive unitThe Pixel Information of element merges output, can improving picture quality; Another kind of duty is, multiple light-sensitive images of each photosensitive unitThe Pixel Information of element is exported separately, obtains phase information by the information contrast between photosensitive pixel, is phase place focusing and the depth of fieldInformation test provides data basis.
Below the present invention's phase place focusing method that embodiment proposes is on the other hand described.
The flow chart of Fig. 8 phase place focusing method according to an embodiment of the invention, as Fig. 8 shows, this phase place focusing methodComprise the following steps:
S10, provides imageing sensor.
Imageing sensor comprises photosensitive unit array, filter unit array and micro mirror unit array, and micro mirror unit array is positioned at instituteState on filter unit array, each micro mirror unit covers a filter unit and a photosensitive unit, each photosensitive unit bagDraw together multiple photosensitive pixels, described micro mirror unit comprises the first micro mirror and multiple the second micro mirror, and described the second micro mirror is positioned at describedBetween one micro mirror and described filter unit array, the setting corresponding to described multiple photosensitive pixels of described multiple the second micro mirrors. EveryThe corresponding multiple photosensitive pixels of individual micro mirror unit, and micro mirror unit adopts two micro-mirror structure, increase correspondence under each the first micro mirrorThe second micro mirror that photosensitive pixel arranges, the second micro mirror can be assembled again to the imaging light that sees through the first micro mirror, makes lightGather on corresponding photosensitive pixel, avoid the light between adjacent photosensitive pixel to disturb.
S20, controls the exposure of photosensitive unit array, and the output of reading photosensitive unit array, wherein, controls same photosensitive unitThe respectively separately output of Pixel Information of photosensitive pixel.
S30, carries out the differentiation of imaging light to obtain the phase difference letter of imaging according to the Pixel Information of the photosensitive pixel of photosensitive unitBreath, and carry out phase place focal adjustment according to phase information.
Phase place focusing method of the present invention, based on adopting the first micro mirror and multiple the second micro mirror to form the double lens knot of micro mirror unitStructure, the corresponding filter unit of each micro mirror and multiple photosensitive pixel, the setting corresponding to photosensitive pixel of the second micro mirror, can keep awayThe light of exempting between neighbor is crosstalked, by the output separately respectively of the Pixel Information of the photosensitive pixel of same photosensitive unit, fromWhen burnt state, each photosensitive unit can obtain the light signal of different directions, and light interference is little, thereby is phase place pairJiao provides condition, and then can obtain phase information to realize phase place focusing, and phase-detection precision improves.
Below the imaging device of further aspect of the present invention embodiment is described.
The block diagram of Fig. 9 imaging device according to an embodiment of the invention, as Fig. 9 shows, this imaging device 1000 comprisesState imageing sensor 100 and the control module 200 of aspect.
Control module 200 is determined output mode according to model selection instruction, controls the exposure of photosensitive unit array, and reads sensitizationThe output of cell array, wherein, in the time selecting the first output mode, control module 200 is controlled the sensitization of same photosensitive unitThe Pixel Information of pixel merges output.
Imaging device 1000 of the present invention, based on the structure of imageing sensor 100, can avoid the light between pixel to crosstalk,The Pixel Information of the photosensitive pixel of same photosensitive unit is merged output by control module, with single photosensitive unit in correlation techniqueOutput is compared, and can improve imaging sensitivity and signal to noise ratio, improves image quality.
In an embodiment of the present invention, in the time selecting the second output mode, control module 200 is controlled the sense of same photosensitive unitThe Pixel Information of light pixel is output separately respectively. Control module 200 is carried out according to the Pixel Information of the photosensitive pixel of photosensitive unitImaging light distinguishes to obtain the phase information of imaging, and carries out phase place focal adjustment according to phase information.
Embodiment also proposes a kind of terminal in still another aspect of the invention, and as Figure 10 shows, this terminal 2000 comprises above-mentioned aspectThe imaging device 1000 of embodiment. This terminal 2000, can take pictures, and image quality improves, and has phase-detection function, phasePosition accuracy of detection improves.
Describing is with reference to the accompanying drawings the imaging device 1000 that strength proposes according to another aspect of the invention, this imaging device100 comprise imageing sensor 100 and control module 200.
The photosensitive unit array exposure of control module 200 control chart image-position sensors 100, and the output of reading photosensitive unit array,Wherein, by the output separately respectively of the Pixel Information of the photosensitive pixel of same photosensitive unit, and according to the photosensitive pixel of photosensitive unitPixel Information carry out the differentiation of imaging light to obtain the phase information of imaging, carry out phase place focusing according to phase information and adjustJoint.
Image-forming apparatus according to the present invention 1000, based on the structure of imageing sensor 100, control module is by same photosensitive unitThe respectively separately output of Pixel Information of photosensitive pixel, in the time of out-of-focus appearance, each photosensitive unit can obtain different directionsLight signal, thus for phase place focusing provides condition, can avoid the light between pixel to crosstalk, improve phase-detection precision.
Describe with reference to the accompanying drawings the terminal 2000 proposing according to another aspect of the invention embodiment, this terminal 2000 comprisesState the imaging device 1000 of another aspect embodiment. This terminal 2000, has phase place focus function, and phase-detection precision is high.
Particularly, terminal 1000 can include but not limited to mobile phone.
Imaging device 1000 can comprise the preposition camera of mobile phone, obtains focussing distance information, Jin Erke according to phase informationTo regulate the distance of preposition camera according to focussing distance information, realize phase place focusing.
It should be noted that, in the description of this description, any process of otherwise describing in flow chart or at this orMethod describe can be understood to, represent comprise one or more for realize specific logical function or process step canCarry out module, fragment or the part of code of instruction, and the scope of the preferred embodiment of the present invention comprises other realization,Wherein can, not according to order shown or that discuss, comprise according to related function by the mode of basic while or by contrarySequentially, carry out function, this should be understood by embodiments of the invention person of ordinary skill in the field.
The logic and/or the step that in flow chart, represent or otherwise describe at this, for example, can be considered to for realityThe sequencing list of the executable instruction of existing logic function, may be embodied in any computer-readable medium, for instructionExecutive system, device or equipment (as computer based system, comprise that the system of processor or other can carry out from instructionSystem, device or equipment instruction fetch are also carried out the system of instruction) use, or in conjunction with these instruction execution systems, install or establishStandby and use. With regard to this description, " computer-readable medium " can be anyly can comprise, store, communicate by letter, propagateOr transmission procedure uses for instruction execution system, device or equipment or in conjunction with these instruction execution systems, device or equipmentDevice. The example more specifically (non-exhaustive list) of computer-readable medium comprises following: have one or more clothThe electrical connection section (electronic installation) of line, portable computer diskette box (magnetic device), random access memory (RAM), read-onlyMemory (ROM), the erasable read-only storage (EPROM or flash memory) of editing, fiber device, and portableCompact disc read-only memory (CDROM). In addition, computer-readable medium can be even the paper that can print described program thereonOr other suitable media, because can, for example by paper or other media are carried out to optical scanner, then edit, separateTranslate or process in electronics mode and obtain described program with other suitable methods if desired, be then stored in computerIn memory.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination. In above-mentioned realityExecute in mode, multiple steps or method can be with the software being stored in memory and carried out by suitable instruction execution system orFirmware is realized. For example, if realized with hardware, with the same in another embodiment, available well known in the art underAny one in row technology or their combination realize: have the logic gates for data-signal being realized to logic functionDiscrete logic, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), existingField programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is canComplete to carry out the hardware that instruction is relevant by program, described program can be stored in a kind of computer-readable recording medium,This program, in the time carrying out, comprises step of embodiment of the method one or a combination set of.
In the description of this description, the implication of " multiple " is at least two, for example two, and three etc., unless separately had brightReally concrete restriction. Reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " oneA little examples " etc. the description specific features, structure, material or the feature that mean to describe in conjunction with this embodiment or example be contained inIn at least one embodiment of the present invention or example. In this manual, must be for to the schematic statement of above-mentioned termBe identical embodiment or example. And, specific features, structure, material or the feature of description can any orIn multiple embodiment or example with suitable mode combination. In addition, not conflicting in the situation that, the technology people of this areaMember can carry out combination and group by the feature of the different embodiment that describe in this description or example and different embodiment or exampleClose.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary,Can not be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodimentChange, amendment, replacement and modification.
Claims (15)
1. an imageing sensor, is characterized in that, comprising:
Photosensitive unit array;
Be arranged on the filter unit array on described photosensitive unit array;
Micro mirror unit array, described micro mirror unit array is positioned on described filter unit array, and each micro mirror unit covers oneIndividual filter unit and a photosensitive unit, each photosensitive unit comprises multiple photosensitive pixels, described micro mirror unit comprises that first is micro-Mirror and multiple the second micro mirror, described the second micro mirror is between described the first micro mirror and described filter unit array, described multipleThe setting corresponding to described multiple photosensitive pixels of the second micro mirror.
2. imageing sensor as claimed in claim 1, is characterized in that, described photosensitive unit comprises 2*2 described sensitizationPixel.
3. imageing sensor as claimed in claim 1, is characterized in that, described filter unit array comprises Bayer array.
4. a Pixel Information output intent for imageing sensor, is characterized in that, described imageing sensor comprises: sensitization listElement array, filter unit array and micro mirror unit array, micro mirror unit array is positioned on described filter unit array, eachMicro mirror unit covers a filter unit and a photosensitive unit, and each photosensitive unit comprises multiple photosensitive pixels, each described inMicro mirror unit comprises the first micro mirror and multiple the second micro mirror, and described the second micro mirror is positioned at described the first micro mirror and described filter unitBetween array, the setting corresponding to described multiple photosensitive pixels of described multiple the second micro mirrors, said method comprising the steps of:
Determine output mode according to model selection instruction;
Control described photosensitive unit array exposure, and the output of reading described photosensitive unit array, wherein, defeated in selection firstWhile going out pattern, the Pixel Information of controlling multiple photosensitive pixels of same described photosensitive unit merges output.
5. method as claimed in claim 4, is characterized in that, also comprises:
In the time selecting the second output mode, control the Pixel Information of multiple photosensitive pixels of same described photosensitive unit and distinguish separatelyOutput.
6. method as claimed in claim 5, is characterized in that, wherein, in the time selecting described the second output mode, also bagDraw together:
Carry out imaging light differentiation to obtain imaging according to the output of the Pixel Information of multiple photosensitive pixels of described photosensitive unitPhase information; And
Carry out phase place focal adjustment according to described phase information.
7. a phase place focusing method, is characterized in that, said method comprising the steps of:
Imageing sensor is provided, and described imageing sensor comprises: photosensitive unit array, filter unit array and micro mirror unit battle arrayRow, micro mirror unit array is positioned on described filter unit array, and each micro mirror unit covers a filter unit and a senseLight unit, each photosensitive unit comprises multiple photosensitive pixels, described micro mirror unit comprises the first micro mirror and multiple the second micro mirror,Described the second micro mirror between described the first micro mirror and described filter unit array, described multiple the second micro mirrors and described multiplePhotosensitive pixel is corresponding to be arranged;
Control the exposure of described photosensitive unit array, and the output of reading described photosensitive unit array, wherein, control same described inThe Pixel Information of multiple photosensitive pixels of photosensitive unit is output separately respectively; And
Carry out the differentiation of imaging light to obtain the phase difference letter of imaging according to the Pixel Information of the photosensitive pixel of described photosensitive unitBreath, and carry out phase place focal adjustment according to described phase information.
8. an imaging device, is characterized in that, comprising:
Imageing sensor as described in claim 1-3 any one; With
Control module, described control module is determined output mode according to model selection instruction, controls the sense of described imageing sensorThe exposure of light cell array, and the output of reading described photosensitive unit array, wherein, in the time selecting the first output mode, described inThe Pixel Information of multiple photosensitive pixels of the same described photosensitive unit of control module control merges output.
9. imaging device as claimed in claim 8, is characterized in that, in the time selecting the second output mode, and described control mouldThe Pixel Information of multiple photosensitive pixels of the same described photosensitive unit of piece control is output separately respectively.
10. imaging device as claimed in claim 8, is characterized in that, in the time selecting the second output mode, and described controlModule, carries out the differentiation of imaging light to obtain the phase place of imaging according to multiple Pixel Information of the photosensitive pixel of described photosensitive unitPoor information, and carry out phase place focal adjustment according to described phase information.
11. 1 kinds of terminals, is characterized in that, comprise the imaging device as described in claim 8-10 any one.
12. 1 kinds of imaging devices, is characterized in that, comprising:
Imageing sensor as described in claim 1-3 any one; With
Control module, controls the photosensitive unit array exposure of described imageing sensor, and reads the defeated of described photosensitive unit arrayGo out, wherein, by the output separately respectively of the Pixel Information of the photosensitive pixel of same described photosensitive unit, and according to described sensitization listThe Pixel Information of the photosensitive pixel of unit is carried out the differentiation of imaging light to obtain the phase information of imaging, according to described phase difference letterBreath carries out phase place focal adjustment.
13. 1 kinds of terminals, is characterized in that, comprise imaging device as claimed in claim 12.
14. terminals as claimed in claim 13, is characterized in that, described terminal comprises mobile phone.
15. terminals as claimed in claim 14, is characterized in that, described imaging device comprises the preposition camera of described mobile phone.
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