CN105590939A - Image sensor, output method thereof, phase focusing method, image device, and terminal - Google Patents
Image sensor, output method thereof, phase focusing method, image device, and terminal Download PDFInfo
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- 230000008313 sensitization Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
- H01L27/14627—Microlenses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
Abstract
The invention discloses an image sensor comprising a light-sensing unit array, a light-filtering unit array, and a first micro lens array. The light-filtering unit array is arranged on the light-sensing unit array. The first micro lens array is arranged on the light-filtering unit array. Each first micro lens covers a light-filtering unit and a light-sensing unit. Each light-sensing unit comprises multiple light-sensing pixels. The first micro lens array comprises elliptic first lenses. The image sensor provides a hardware basis for image quality improvement and phase focusing condition satisfaction. The invention also discloses a pixel information output method of the image sensor, a phase focusing method, an image device, 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 phase-detection, can not provide basis for carrying out phase place focusing.
Summary of the invention
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 provide hardware base for improving image quality and meeting phase place focus conditionPlinth.
The present invention also proposes a kind of Pixel Information output intent, phase place focusing method, imaging device and terminal of imageing sensor.
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; The first micro mirror array, described the first micro mirror arrayBe positioned on described filter unit array, each the first micro mirror covers a filter unit and a photosensitive unit, each sensitizationUnit comprises multiple photosensitive pixels, and wherein, described the first micro mirror array comprises oval-shaped the first micro mirror.
Imageing sensor of the present invention, based on the structure of the corresponding filter unit of each the first micro mirror and multiple photosensitive pixels,Provide hardware foundation for improving image quality and meeting phase place focus condition.
Wherein, the first micro mirrors whole or part in described the first micro mirror array be ellipse.
In some embodiments of the invention, described imageing sensor also comprises: the second micro mirror array, described the second micro mirror battle arrayRow are between described the first micro mirror array and described filter unit array, and each the first micro mirror covers multiple the second micro mirrors.
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, the present invention proposes a kind of Pixel Information output intent of imageing sensor, the party on the other handMethod comprises the following steps: the imageing sensor that above-mentioned aspect is provided; Determine output mode according to model selection instruction; Control instituteState the exposure of photosensitive unit array, and the output of reading described photosensitive unit array, wherein, in the time selecting the first output mode,The Pixel Information of controlling multiple photosensitive pixels of same described photosensitive unit merges output.
According to the Pixel Information output intent of imageing sensor of the present invention, based on the corresponding filter unit of each the first micro mirrorWith the structure of multiple photosensitive pixels, in the time selecting the first output mode, by the Pixel Information of the photosensitive pixel of same photosensitive unitMerge output, compared with the output of single photosensitive unit in correlation technique, can improve imaging sensitivity and signal to noise ratio, improveImage quality.
In some embodiments of the invention, said method also comprises: selecting when the second output mode, control same described inThe Pixel Information of multiple photosensitive pixels of photosensitive unit is output separately respectively.
In some embodiments of the invention,, in the time selecting described the second output mode, said method also comprises: according to describedThe Pixel Information of multiple photosensitive pixels of photosensitive unit is carried out the differentiation of imaging light to obtain the phase information of imaging; And,Carry out phase place focal adjustment according to described phase information.
Further aspect of the present invention also proposes a kind of phase place focusing method, said method comprising the steps of: above-mentioned image is providedSensor; Control described photosensitive unit array exposure, and the output of reading described photosensitive unit array, wherein, control sameThe Pixel Information of the photosensitive pixel of described photosensitive unit is output separately respectively; And according to the photosensitive pixel of described photosensitive unitPixel Information is carried out the differentiation of imaging light to obtain the phase information of imaging, and carries out phase place pair according to described phase informationBurnt adjusting.
According to phase place focusing method of the present invention, the corresponding filter unit of each micro mirror and multiple sense based on imageing sensorThe structure of light pixel, by the output separately respectively of the Pixel Information of the photosensitive pixel of same photosensitive unit, in the time of out-of-focus appearance, everyIndividual photosensitive unit can obtain the light signal of different directions, thereby for phase place focusing provides condition, and then can obtain phase placePoor information is to realize phase place focusing.
Another aspect of the invention embodiment also proposes a kind of imaging device, and this imaging device comprises: the image sensing of above-mentioned aspectDevice; 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 photosensitive unit of control module control merges output.
Imaging device of the present invention, the corresponding filter unit of each micro mirror based on imageing sensor and multiple photosensitive pixelsStructure, in the time selecting the first output mode, the Pixel Information of the photosensitive pixel of same photosensitive unit is merged output by control module,Compared with the output of single photosensitive unit in correlation technique, can improve imaging sensitivity and signal to noise ratio, improve image quality.
In some embodiments of the invention, in the time selecting the second output mode, the same described sensitization of described control module controlThe Pixel Information of multiple photosensitive pixels of unit 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 the phase information of imaging, and according to described phasePotential difference information is carried out phase place focal adjustment.
Another aspect of the present invention proposes a kind of terminal, and this terminal comprises above-mentioned imaging device. This terminal, can take pictures,Image quality improves.
Another aspect of the invention also proposes a kind of imaging device, and this imaging device comprises: above-mentioned imageing sensor; And controlModule, controls the photosensitive unit array exposure of described imageing sensor, and the output of reading described photosensitive unit array, wherein,By the output separately respectively of the Pixel Information of multiple photosensitive pixels of same photosensitive unit, and according to multiple senses of described photosensitive unitThe Pixel Information of light pixel is carried out the differentiation of imaging light to obtain the phase information of imaging, carries out according to described phase informationPhase place focal adjustment.
Image-forming apparatus according to the present invention, imageing sensor is based on the corresponding filter unit of each micro mirror and multiple photosensitive pixelStructure, control module is the output separately respectively of the Pixel Information of the photosensitive pixel 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 phasePotential difference information provides basis for realizing phase place focusing.
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.
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;
The block diagram of Fig. 4 imageing sensor according to an embodiment of the invention;
Fig. 5 is according to the imaging schematic diagram of a specific embodiment of the present invention;
Imaging schematic diagram in Fig. 6 correlation technique;
The flow chart of the Pixel Information output intent of Fig. 7 imageing sensor according to an embodiment of the invention;
(1) in Fig. 8 and (2) are according to the imaging light input schematic diagram in correlation technique;
Fig. 9 is the flow chart of phase place focusing method according to an embodiment of the invention;
Figure 10 is the block diagram of imaging device according to an embodiment of the invention; And
Figure 11 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, the first micro mirror unit array 30, the second micro mirror array 40, sensitizationPixel 11, filter unit 21 and the first micro mirror 31 and the second micro mirror 41, 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.
Imageing sensor according to the embodiment of the present invention is described with reference to the accompanying drawings.
Fig. 1 is the schematic diagram of imageing sensor according to an embodiment of the invention, as shown in Figure 1, and this imageing sensor100 comprise photosensitive unit array 10, filter unit array 20 and the first micro mirror array 30.
Wherein, filter unit array 20 is arranged on photosensitive unit array 10; The first micro mirror array 30 is positioned at filter unit battle arrayOn row 20, each the first micro mirror 31 covers a filter unit 21 and a photosensitive unit, and each photosensitive unit comprises manyIndividual photosensitive pixel 11, wherein, the first micro mirror array 30 comprises oval-shaped the first micro mirror 31.
Put it briefly, in the imageing sensor 100 of the embodiment of the present invention, multiple photosensitive pixels 11 form one group and shared oneThe first micro mirror 31, in some embodiments of the invention, the whole or part in the first micro mirror array 30 first micro-Mirror 31 is oval. By the structure of the corresponding photosensitive pixel of micro mirror in current imageing sensor, change one the intoThe corresponding multiple photosensitive pixels 11 of one micro mirror 31, and this group is the optical filtering of the photosensitive pixel 11 corresponding same colors in photosensitive unitUnit 21.
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.
Imageing sensor 100 of the present invention, based on each a first micro mirror 31 corresponding filter unit 21 and multiple light-sensitive imagesThe structure of element 11, provides hardware foundation for improving image quality and meeting phase place focus condition.
Adopt multiple photosensitive pixels 11 to share a micro mirror, although can realize, pixel merges and the function of phase-detection,Be that the light converging is concentrated in the middle of neighbor owing to only having a micro mirror, cause between neighbor and crosstalk and become large,Affect the precision of phase-detection.
While realizing phase-detection function for the shared micro mirror of multiple photosensitive pixels 11, that between pixel, crosstalks asksTopic, the application proposes double micro lens design, avoids crosstalking, and promotes the precision of phase-detection.
As shown in Figure 4, also to comprise that the second micro mirror array 40, the second micro mirror arrays 40 are positioned at first micro-for imageing sensor 100Between lens array 30 and filter unit array 20, each the first micro mirror 31 covers multiple the second micro mirrors 41. For example, forEach photosensitive unit comprises 2*2 photosensitive pixel 11, and each the first micro mirror 31 covers 41, four second of four the second micro mirrorsMicro mirror 41 and four corresponding settings of photosensitive pixel 11; Or part adopts oval the first micro mirror in the first micro mirror array 3031, each the first micro mirror 31 adopts two the second micro mirrors 41 below, or in the first micro mirror array 30, full array adopts ellipseCircular the first micro mirror 31, each the first micro mirror 31 adopts two the second micro mirrors 41 below.
Adopt two micro mirrors designs, below the first micro mirror 31, increase by the second micro mirror 41, the second micro mirrors 41 and can play light splittingEffect, makes the light that sees through the first micro mirror 31 can not drop on the adjoining edge zone of multiple adjacent photosensitive pixels 11, butAfter again focusing on by the second micro mirror 41, drop on the central area of each corresponding photosensitive pixel 11, thus canReduce crosstalking between adjacent photosensitive pixel 11.
Be illustrated in figure 5 imaging schematic diagram according to an embodiment of the invention, wherein, 4 adjacent photosensitive pixels 11Share first micro mirror 31, and on four photosensitive pixels 11 again correspondence four the second micro mirrors 41 are set. Fig. 6 is relevantImaging schematic diagram in technology, wherein, corresponding first micro mirror 31 of photosensitive pixel 11. And in the application, as Fig. 5Shown in, design by double micro lens, at each photosensitive pixel 11 of 31 times correspondences of the first micro mirror, the second micro mirror 41 is set again,The second micro mirror 41 plays the effect of light splitting, imaging light is focused to again to the photosensitive region center of corresponding photosensitive pixel 11Position, can reduce crosstalking between adjacent photosensitive pixel 11, for the precision of improving picture quality and phase-detection provides hardPart basis.
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 7, the Pixel Information output intent of this imageing sensor comprises the following steps:
S1, provides imageing sensor.
S2, 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.
S3, 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 5, wherein, a corresponding filter unit of the first micro mirror and four photosensitive pixels. As Fig. 5Shown in, wherein, a corresponding filter unit of micro mirror and a photosensitive pixel, light converges at list after seeing through micro mirrorThe central area of individual photosensitive pixel. If the Pixel Information of four photosensitive pixels merges output in Fig. 1 and Fig. 5, signal becomesFor 4 times of the output signal of dot structure shown in Fig. 6, and noise only has 2 times of dot structure in Fig. 6, thereby image is sensitiveDegree and signal to noise ratio have corresponding lifting, adopt two micro-mirror structure, and the light that can also reduce between photosensitive pixel is crosstalked, and carriesHigh imaging quality.
Can find out, the Pixel Information output intent of the imageing sensor of the embodiment of the present invention, based on corresponding one of each micro mirrorFilter unit and multiple photosensitive pixel, in the time selecting the first output mode, by the pixel letter of the photosensitive pixel of same photosensitive unitBreath merges output, compared with the output of single photosensitive unit in correlation technique, can improve imaging sensitivity and signal to noise ratio, carriesHigh picture quality. Adopt the first micro mirror and multiple the second micro mirror to form two micro-mirror structure, the second micro mirror plays a point light action, canTo avoid the light between neighbor to crosstalk,
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. 6, the corresponding filter unit of micro mirror andA photosensitive pixel, the in the situation that of focusing, as shown in Fig. 8 (1), imaging light focuses on photosensitive pixel through micro mirrorImaging, and the in the situation that of out of focus, as shown in Fig. 8 (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 the first micro mirror, and each senseLight unit comprises multiple photosensitive pixels, i.e. the corresponding multiple photosensitive pixels of each the first micro mirror, so each the first micro mirror receivesMultiple light for the imaging of multiple photosensitive pixels, and then by the second micro mirror, light is focused to corresponding light-sensitive image againOn element, can avoid the light between photosensitive pixel to crosstalk. Control the Pixel Information of multiple photosensitive pixels of same photosensitive unitExport separately respectively, 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, filter unit and photosensitive unit, just can realize the detection of relative focusing,And without changing common photosensitive this body structure of pixel or increase separately a light occlusion part in photosensitive pixel structure, relativelyThe implementation that focusing detects is also simpler.
For example, as shown in Figure 5, 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 the first micro mirror 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. 9 phase place focusing method according to an embodiment of the invention, as Fig. 9 shows, this phase place focusing methodComprise the following steps:
S10, provides imageing sensor.
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 the corresponding filter unit of each micro mirror and multiple photosensitive pixel, by same senseThe Pixel Information of the photosensitive pixel of light unit is output separately respectively, and in the time of out-of-focus appearance, each photosensitive unit can obtain differenceThe light signal of direction, thereby for phase place focusing provides condition, and then can obtain phase information to realize phase place focusing,And phase-detection precision improves. Adopt the two-lens structure of the first micro mirror and multiple the second micro mirror formation micro mirror unit, secondMicro mirror plays the effect of light splitting, can avoid the light between neighbor to crosstalk, and phase place focusing precision is provided.
Below the imaging device of further aspect of the present invention embodiment is described.
The block diagram of Figure 10 imaging device according to an embodiment of the invention, as Figure 10 shows, this imaging device 1000 comprisesThe imageing sensor 100 of above-mentioned aspect and control module 200.
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, control module is 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 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 11 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.
The imaging device 1000 that embodiment proposes is according to another aspect of the invention described with reference to the accompanying drawings, 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 focus condition is provided for phase place.
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 2000 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 description of the invention, the implication of " multiple " is at least two, for example two, and three etc.,Unless otherwise expressly limited specifically. Reference term " embodiment ", " some embodiment ", " example ", " specifically showExample " or the description of " some examples " etc. the specific features that means to describe in conjunction with this embodiment or example, structure, material orFeature is contained at least one embodiment of the present invention or example. In this manual, the schematic statement to above-mentioned termNot must for be identical embodiment or example. And specific features, structure, material or the feature of description canIn one or more embodiment in office or example with suitable mode combination. In addition, not conflicting in the situation that, abilityThe technical staff in territory can enter the feature of the different embodiment that describe in this description or example and different embodiment or exampleRow combination and combination.
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;
The first micro mirror array, described the first micro mirror array is positioned on described filter unit array, and each the first micro mirror covers oneIndividual filter unit and a photosensitive unit, each photosensitive unit comprises multiple photosensitive pixels, wherein, described the first micro mirror arrayComprise oval-shaped the first micro mirror.
2. imageing sensor as claimed in claim 1, is characterized in that, wherein, and whole in described the first micro mirror arrayOr part the first micro mirror be ellipse.
3. imageing sensor as claimed in claim 1, is characterized in that, also comprises:
The second micro mirror array, described the second micro mirror array between described the first micro mirror array and described filter unit array,Each the first micro mirror covers multiple the second micro mirrors.
4. imageing sensor as claimed in claim 3, is characterized in that, described photosensitive unit comprises 2*2 described sensitizationPixel.
5. imageing sensor as claimed in claim 1, is characterized in that, described filter unit array comprises Bayer array.
6. a Pixel Information output intent for imageing sensor, is characterized in that,
Imageing sensor as described in claim 1-5 any one is provided;
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.
7. method as claimed in claim 6, 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.
8. method as claimed in claim 7, is characterized in that, wherein, in the time selecting described the second output mode, also bagDraw together:
Carry out the differentiation of imaging light to obtain the phase difference of imaging according to the Pixel Information of multiple photosensitive pixels of described photosensitive unitInformation; And
Carry out phase place focal adjustment according to described phase information.
9. a phase place focusing method, is characterized in that, said method comprising the steps of:
Imageing sensor as described in claim 1-5 any one is provided;
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 the photosensitive pixel 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.
10. an imaging device, is characterized in that, comprising:
Imageing sensor as described in claim 1-5 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 photosensitive unit of control module control merges output.
11. imaging devices as claimed in claim 10, is characterized in that, in the time selecting the second output mode, and described controlThe Pixel Information of multiple photosensitive pixels of the same described photosensitive unit of module controls is output separately respectively.
12. imaging devices as claimed in claim 10, 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 the Pixel Information of multiple photosensitive pixels of described photosensitive unitPoor information, and carry out phase place focal adjustment according to described phase information.
13. 1 kinds of terminals, is characterized in that, comprise the imaging device as described in claim 10-12 any one.
14. 1 kinds of imaging devices, is characterized in that, comprising:
Imageing sensor as described in claim 1-5 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 multiple photosensitive pixels of same photosensitive unit, and according to described sensitization listThe Pixel Information of multiple photosensitive pixels of unit is carried out the differentiation of imaging light to obtain the phase information of imaging, according to described phase placePoor information is carried out phase place focal adjustment.
15. 1 kinds of terminals, is characterized in that, comprise imaging device as claimed in claim 14.
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