CN106921823B - Imaging sensor, camera module and terminal device - Google Patents

Imaging sensor, camera module and terminal device Download PDF

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Publication number
CN106921823B
CN106921823B CN201710297621.4A CN201710297621A CN106921823B CN 106921823 B CN106921823 B CN 106921823B CN 201710297621 A CN201710297621 A CN 201710297621A CN 106921823 B CN106921823 B CN 106921823B
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photosensitive unit
focusing
pair
array
center line
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CN106921823A (en
Inventor
曾元清
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/54Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/67Focus control based on electronic image sensor signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70SSIS architectures; Circuits associated therewith

Abstract

The invention discloses a kind of imaging sensor, camera module and terminal devices, wherein imaging sensor includes: photosensitive unit array, the filter unit array that is arranged on the photosensitive unit array, and the microlens array on the filter unit array;Wherein, including the second focusing photosensitive unit that the first focusing photosensitive unit and N M parallel to each other to center line is parallel to each other to center line in the photosensitive unit array, a lenticule unit covers a filter unit and a pair of focusing photosensitive unit;The center line of a pair the first focusing photosensitive unit is greater than 0 degree with the angle of cut of the centreline space of a pair the second focusing photosensitive unit, and M and N are the positive integer more than or equal to 1.It is phase difference of the detection pixel point in multiple directions by the way that the multipair focusing photosensitive unit with various arrangement direction is arranged on photosensitive unit array, speed, precision and the accuracy for improving double-core focusing provide hardware foundation.

Description

Imaging sensor, camera module and terminal device
Technical field
The present invention relates to technical field of image processing more particularly to a kind of imaging sensors, camera module and terminal device.
Background technique
The pixel of imaging sensor is divided into two by double-core both full-pixel focusing technology, and there are two photoelectricity in a pixel Diode can efficiently accomplish phase difference detection under the premise of not covering any pixel.Therefore compared to traditional focusing method, benefit It is focused with the sensor of pixel only one photodiode, double-core both full-pixel is focused the focusing precision and speed of technology Du Genggao, and since without sacrificing imaging pixel, the effective range of focusing is also wider.
However, the focusing accuracy and speed of existing double-core both full-pixel focusing technology are still to be improved.
Summary of the invention
The purpose of the present invention is intended to solve above-mentioned one of technical problem at least to a certain extent.
For this purpose, first purpose of the application is to propose a kind of imaging sensor, by setting on photosensitive unit array The multipair focusing photosensitive unit with various arrangement direction is set, is phase difference of the detection pixel point in multiple directions, improves double-core Speed, precision and the accuracy of focusing provide hardware foundation.
Second purpose of the application is to propose a kind of camera module.
The third purpose of the application is to propose a kind of terminal device.
To solve the above-mentioned problems, the application first aspect proposes a kind of imaging sensor, comprising: photosensitive unit array, Filter unit array on the photosensitive unit array, and the lenticule battle array on the filter unit array are set Column;
It wherein, include the M first focusing photosensitive unit parallel to each other to center line and N pairs in the photosensitive unit array Center line the second focusing photosensitive unit parallel to each other, a lenticule unit covers a filter unit and a pair of of focusing is photosensitive Unit;
The center line of a pair the first focusing photosensitive unit is big with the angle of cut of the centreline space of a pair the second focusing photosensitive unit In 0 degree, M and N are the positive integer more than or equal to 1.
Imaging sensor provided by the embodiments of the present application, comprising: photosensitive unit array is arranged on photosensitive unit array Filter unit array, and the microlens array on filter unit array, have by being arranged on photosensitive unit array The multipair focusing photosensitive unit in various arrangement direction is phase difference of the detection pixel point in multiple directions, improves double-core focusing Speed, precision and accuracy provide hardware foundation.
To solve the above-mentioned problems, the application second aspect embodiment proposes a kind of camera module, including such as first aspect The imaging sensor.
In camera module provided by the embodiments of the present application, includes photosensitive unit array in imaging sensor, is arranged photosensitive Filter unit array in cell array, and the microlens array on filter unit array, by photosensitive unit battle array Setting has the multipair focusing photosensitive unit in various arrangement direction on column, realizes detection pixel point in the phase of multiple directions Difference improves speed, precision and the accuracy of double-core focusing.
To solve the above-mentioned problems, the application third aspect embodiment proposes a kind of terminal device, including shell, circuit Plate, camera module and power circuit, wherein the circuit board is placed in the space interior that the shell surrounds;The power supply electricity Road, for each circuit or the device power supply for the terminal device.
The camera module includes imaging sensor, and described image sensor includes: photosensitive unit array, is arranged described Filter unit array on photosensitive unit array, and the microlens array on the filter unit array;
It wherein, include the M first focusing photosensitive unit parallel to each other to center line and N centering in the photosensitive unit array Heart line the second focusing photosensitive unit parallel to each other, a lenticule unit cover a filter unit and a pair of photosensitive list of focusing Member, wherein the center line of each pair of focusing photosensitive unit is parallel to the focusing orientation of photosensitive unit with this;
The center line of a pair the first focusing photosensitive unit is big with the angle of cut of the centreline space of a pair the second focusing photosensitive unit In 0 degree, M and N are the positive integer more than or equal to 1.
In terminal device provided by the embodiments of the present application, camera module includes photosensitive unit array, is arranged described photosensitive Filter unit array in cell array, and the imaging sensor of the microlens array on the filter unit array, By the way that the multipair focusing photosensitive unit with various arrangement direction is arranged on photosensitive unit array, and utilize the different rows read The output valve of the focusing photosensitive unit of column direction, focuses, improves speed, precision and the accuracy of double-core focusing.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, in which:
Fig. 1 is traditional double-core focus image sensor structure schematic diagram;
Fig. 2 a is the sectional view according to the imaging sensor of one embodiment of the application;
Fig. 2 b is the top view according to the imaging sensor of one embodiment of the application;
Fig. 3 is focusing photosensitive unit distribution schematic diagram in the imaging sensor according to one embodiment of the application;
Fig. 4 is focusing photosensitive unit distribution schematic diagram in the imaging sensor according to another embodiment of the application;
Fig. 5 is the schematic diagram according to the camera module of one embodiment of the application;
Fig. 6 is the flow chart of the camera module image pickup processing method of the application one embodiment;
Fig. 7 is the flow chart of the camera module image pickup processing method of the application another embodiment;
Fig. 8 is the structure chart of the camera module camera treatment device of the application one embodiment;
Fig. 9 is the structure chart of the camera module camera treatment device of the application another embodiment;
Figure 10 is the structure chart for the terminal device that the application one embodiment provides.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings it describes the imaging sensor of the embodiment of the present invention, camera module image pickup processing method, device, take the photograph As mould group and terminal device.
Double-core both full-pixel focusing technology is state-of-the-art focusing technology currently on the market, double-core used by the focusing technology Sensor structure focus as shown in Figure 1, corresponding to two photodiodes under each lenticule (circle indicates lenticule in Fig. 1). When carrying out imaging, " 1 " is added with the value of " 2 " and obtains single component pixels value.When carrying out focusing process, " 1 " is read respectively The value of " 2 " can calculate the drive volume and driving direction of camera lens by calculating phase difference between the two.
Due in current imaging sensor, two photodiodes in photosensitive unit of focusing all are and to arrangement, Therefore, can only detection pixel point horizontal direction phase difference.
In order to solve the problems, such as existing double-core both full-pixel focusing technology can only detection pixel point horizontal direction phase difference, this Invention proposes a kind of imaging sensor and camera module image pickup processing method, by the way that multiple light in the image sensor, are arranged The different focusing photosensitive unit of electric diode orientation is effectively improved with detection pixel point in the phase difference of multiple directions Focusing speed, while improving the precision and accuracy of double-core focusing.
Fig. 2 a and Fig. 2 b is combined first, and imaging sensor provided by the embodiments of the present application is described in detail.
Fig. 2 a is according to the sectional view of the imaging sensor of one embodiment of the application, and Fig. 2 b is one according to the application The top view of the imaging sensor of a embodiment.Fig. 2 a is only illustrated with parts of images sensor.
As shown in Figure 2 a and 2 b, which includes photosensitive unit array 10, filter unit array 20 and micro- Lens array 30.
Wherein, filter unit array 20 is arranged on photosensitive unit array 10, and microlens array 30 is located at filter unit battle array On column 20.Photosensitive unit array 10 includes the M first focusing photosensitive unit 11 parallel to each other to center line and N mutual to center line The second parallel focusing photosensitive unit 12, a lenticule unit 31 cover a filter unit 21 and a pair of photosensitive list of focusing Member, wherein the center line of each pair of focusing photosensitive unit is parallel to the focusing orientation of photosensitive unit with this.
Wherein, the center line of the first focusing of a pair photosensitive unit 11, the center line for photosensitive unit 12 of focusing with a pair second Between the angle of cut be greater than 0 degree, M and N are the positive integer more than or equal to 1.
In the embodiment of the present application, first focusing photosensitive unit 11 center line and second focusing photosensitive unit 12 in Heart line refers in the center line and Fig. 2 b in Fig. 2 a between photodiode 111 and photodiode 112 between " 1 " and " 2 " Center line.
In embodiments of the present invention, filter unit array 20 uses Bayer structure, can be using biography using Bayer structure Algorithm for Bayer structure unite to handle picture signal, without doing big adjustment on hardware configuration.Each optical filtering is single Corresponding a pair of of the focusing photosensitive unit of member 21, i.e., a pair of of focusing photosensitive unit correspond to the filter unit 21 of same color.A pair of focusing The corresponding 2 sub- pixels of photosensitive unit and two photodiodes 111 and 112, respectively correspond " 1 " and " 2 " in Fig. 2 b.
It is photosensitive with the second focusing of a pair due to the center line of a pair the first focusing photosensitive unit 11 in the embodiment of the present application The angle of cut of the centreline space of unit 12 is greater than 0 degree, that is to say, that the M in photosensitive unit array 10 is to the first focusing photosensitive unit 11 is different to orientation of the second focusing photosensitive unit 12 in imaging sensor 100 from N.
To when being focused using imaging sensor 100 provided by the embodiments of the present application, in photosensitive unit array 10 In, after corresponding two photodiodes of each pair of focusing photosensitive unit acquire signal respectively, due to being wrapped in photosensitive unit array 10 Containing the different focusing photosensitive unit of orientation, therefore, pixel can detecte in the phase difference and deviation of two different directions Focusing to accurately calculate direction and distance that camera lens should move, and then is completed in direction.Compared to existing double-core both full-pixel Focusing technology determines the direction that camera lens should move only by detection pixel point phase difference in the horizontal direction and bias direction And distance, using imaging sensor 100 provided by the embodiments of the present application, precision of focusing and accuracy are higher.
It is understood that M is to the first focusing photosensitive unit 11 and N in the photosensitive unit array 10 of the embodiment of the present application Second focusing photosensitive unit 12 can be configured on imaging sensor 100 with any different orientation.For example, M pairs First focusing photosensitive unit 11 is configured in a manner of the horizontal direction parallel of its center line and imaging sensor 100, N is to the Two focusing photosensitive units 12 are configured in its center line mode parallel with some diagonal line of imaging sensor 100, alternatively, M is configured in its center line mode vertical with the horizontal direction of imaging sensor 100 first focusing photosensitive unit 11, N Second focusing photosensitive unit 12 is configured in its center line mode parallel with some diagonal line of imaging sensor 100, Etc..
In the application one kind preferably way of realization, the center line and each pair of second of each pair of first focusing photosensitive unit 11 The central axis of focusing photosensitive unit 12, so that the first focusing photosensitive unit 11 and the second focusing are photosensitive when being focused Unit 12 can detecte each pixel in the phase difference of two mutually perpendicular directions, since the phase difference of both direction is mutual It is mutually unrelated, so as to which directly according to the phase difference of both direction, quickly calculating camera lens should be to mobile distance, thus quickly Complete focusing.
When specific implementation, the logarithm M of the first focusing photosensitive unit 11, the logarithm N with the second focusing photosensitive unit 12 can be with It is configured as needed.Specifically, the logarithm N of the focusing photosensitive unit 12 of logarithm M and second of the first focusing photosensitive unit 11 Can be equal, it can not also wait, herein with no restriction.
Wherein, when M=N, imaging sensor 100 in two directions it is achievable focusing precision and accuracy consistency More preferably.
It should be noted that as shown in Figure 2 b, all photosensitive unit arrays 10 on imaging sensor 100 can be distinguished It is set as the first focusing photosensitive unit 11 and the second focusing photosensitive unit 12, to realize that double-core both full-pixel is focused.And M is to first pair Burnt photosensitive unit 11 and N can be distributed on imaging sensor 100 second focusing photosensitive unit 12 with arbitrary form.Such as The first focusing focusing photosensitive unit 12 of photosensitive unit 11 second, can also be arranged at intervals on imaging sensor 100.
In a kind of possible way of realization of the application, M is to the first focusing photosensitive unit 11 and N to the second photosensitive list of focusing Member 12, can be separately positioned in the vertical centerline and horizontal center line of imaging sensor 100.
Alternatively, M to first focusing photosensitive unit 11 and N to second focusing photosensitive unit 12, institute can also be separately positioned on Two groups of imaging sensor 100 are stated on sideline.
As an example it is assumed that M=7, N=6, center line and imaging sensor 100 of the M to the first focusing photosensitive unit 11 Horizontal direction parallel, N are vertical with the horizontal direction of imaging sensor 100 to the center line of the second focusing photosensitive unit 12.Then such as Shown in Fig. 3, first focusing photosensitive unit 11 is can be set in the vertical centerline of imaging sensor 100 in M, and N is to second pair Burnt photosensitive unit 12 can be set on the horizontal center line of imaging sensor 100.Alternatively, M can also feel the first focusing Light unit 11 is arranged on the horizontal center line of imaging sensor 100, and the second focusing photosensitive unit 12 is arranged in image sensing in N On the vertical center line of device 100.
In addition, M sets the first focusing photosensitive unit 11 and N to the second focusing photosensitive unit 12 on imaging sensor 100 Concentration when setting, also can according to need and is configured, for example, M can pass the first focusing photosensitive unit 11 in image The intermediate dense distribution of sensor 100, N to second focusing photosensitive unit 12 can in the scattered distribution of surrounding of imaging sensor 100, Etc..
It should be noted that since user is when shooting, it will usually subject be made to be located at the intermediate region of image. Therefore, when focusing photosensitive unit is set on the image sensor, the vertical centerline and level in imaging sensor can be set The density of focusing photosensitive unit on center line, greater than being arranged in two groups of imaging sensor to the focusing photosensitive unit on sideline Density, in shooting process, can preferentially obtain the phase information at picture center, in the case where not influencing image quality, It can effectively improve focusing speed.
By above-mentioned analysis it is found that by the photosensitive unit array 10 of imaging sensor 100, two kinds of arrangement sides are set To different focusing photosensitive units, signal can be acquired respectively in two photodiodes that each pair of focusing photosensitive unit includes Afterwards, the side that camera lens should move accurately is calculated in the phase difference and bias direction of two different directions by detection pixel o'clock To and distance, to complete to focus.In a kind of possible way of realization of the application, can also in photosensitive unit array 10, The focusing photosensitive unit of the orientation of three kinds or more is set, to keep the precision of focusing and accuracy higher.
That is, can also include: the L third focusing photosensitive unit parallel to each other to center line in photosensitive unit array 10, L be Positive integer more than or equal to 1.
Wherein, a pair of of third focusing photosensitive unit, is covered by a filter unit 21 and a lenticule unit 31 respectively;
The center line of a pair of of third focusing photosensitive unit, the center line for photosensitive unit 11 of focusing with a pair first, and it is a pair of The angle of cut of the centreline space of second focusing photosensitive unit 12 is respectively greater than 0 degree.
For example, it is assumed that M=12, N=16, L=36, then M is in the first focusing photosensitive unit 11 Heart line can be in 45 degree angles with the horizontal direction of imaging sensor 100, and the center line that N focuses photosensitive unit 12 to second can be with The horizontal direction parallel of imaging sensor 100, L can be with imaging sensors 100 to the center line of third focusing photosensitive unit Horizontal direction is vertical.
When specific implementation, in photosensitive unit array 10, the different focusing sense in two kinds of photodiode array directions is set Light unit is similar, M to first focusing photosensitive unit 11, N to second focusing photosensitive unit 12 and L to third focus photosensitive unit, Also any position on imaging sensor 100 can be set.
For example, M focuses photosensitive list to the first focusing photosensitive unit 11, N to the second focusing photosensitive unit 12 and L to third Member can be separately positioned on the horizontal center line, the first diagonal line and the second diagonal line of imaging sensor 100.
Alternatively, M focuses photosensitive list to the first focusing photosensitive unit 11, N to the second focusing photosensitive unit 12 and L to third Member, can be separately positioned on the vertical center line, the first diagonal line and the second diagonal line of imaging sensor 100, etc..
Imaging sensor provided by the embodiments of the present application, comprising: photosensitive unit array is arranged on photosensitive unit array Filter unit array, and the microlens array on filter unit array, have by being arranged on photosensitive unit array The multipair focusing photosensitive unit in various arrangement direction is phase difference of the detection pixel point in multiple directions, improves double-core focusing Speed, precision and accuracy provide hardware foundation.
Based on the structure of imaging sensor 100 in Fig. 1-Fig. 4, the embodiment of the present application also proposes a kind of camera module.
As shown in figure 5, camera module 500 includes imaging sensor 100.
Specifically, imaging sensor 100 includes: photosensitive unit array 10, is arranged on the photosensitive unit array 10 Filter unit array 20, and the microlens array 30 on the filter unit array 20;
Wherein, include in the photosensitive unit array 10 M to the first focusing photosensitive unit 11 and N to the second photosensitive list of focusing Member 12, a lenticule unit 31 cover a filter unit and a pair of of focusing photosensitive unit, wherein each pair of focusing photosensitive unit Center line with this to focusing the orientation of photosensitive unit it is parallel;
The center line of a pair the first focusing photosensitive unit 11, the friendship for the centreline space of photosensitive unit 12 of focusing with a pair second Angle is greater than 0 degree, and M and N are the positive integer more than or equal to 1.
It should be noted that the aforementioned camera shooting mould for being also applied for the embodiment to the explanation of image sensor embodiment Group, realization principle is similar, and details are not described herein again.
In camera module provided by the embodiments of the present application, includes photosensitive unit array in imaging sensor, is arranged photosensitive Filter unit array in cell array, and the microlens array on filter unit array, by photosensitive unit battle array Setting has the multipair focusing photosensitive unit in various arrangement direction on column, realizes detection pixel point in the phase of multiple directions Difference improves speed, precision and the accuracy of double-core focusing.
Based on the structure of camera module in Fig. 5, processing side is imaged below with reference to camera module of the Fig. 6 to the embodiment of the present application Method is illustrated.
Specifically, camera module 500 includes imaging sensor 100 provided by the embodiments of the present application.
Wherein, the structure of imaging sensor 100 is as Figure 1-Figure 4, and details are not described herein again.
Fig. 6 is the flow chart of the camera module image pickup processing method of the application one embodiment.
As shown in fig. 6, this method comprises:
Step 601, control photosensitive unit array enters focal modes.
Specifically, camera module 500 can control photosensitive unit array 10 and enter focusing mould by a variety of triggering modes Formula.For example, the condition that control photosensitive unit array 10 enters focal modes can be preset, when imaging sensor 100 obtains Image when meeting the condition, then camera module 500 can control photosensitive unit array 10 automatically into focal modes;Alternatively, Photosensitive unit array 10 can also be controlled according to the needs of users into focal modes, such as in the setting of user's touch-control in camera shooting mould When organizing the control button on 500, control photosensitive unit array 10 enters focal modes, etc..
Step 602, M is read to first group of output valve of the first focusing photosensitive unit.
Wherein, first group of output valve, including M to first focusing 11 corresponding two photodiodes of photosensitive unit Output valve.
Step 603, N is read to second group of output valve of the second focusing photosensitive unit.
Wherein, second group of output valve, including N to second focusing 12 corresponding two photodiodes of photosensitive unit Output valve.
It for example, include that 32 pairs of center lines are vertical with the horizontal direction of imaging sensor 100 by taking Fig. 2 b as an example, in Fig. 2 b The first focusing photosensitive unit 11 and the second focusing of horizontal direction parallel of 32 pairs of center lines and imaging sensor 100 feel Light unit 12.Then first group of output valve, respectively including the photodiode of left and right two in 32 pair of first photosensitive unit 11 of focusing Output valve;Second group of output valve, including the output of two photodiodes respectively up and down in 32 pair of second photosensitive unit 12 of focusing Value.
Step 604, according to first group of output valve and second group of output valve, focusing control is carried out.
Specifically, having read M to the first group of output valve and N of the first focusing photosensitive unit 11 to the second focusing photosensitive unit After 12 output valve, focusing control can be carried out according to following step.That is, step 604, can specifically include:
Step 604a determines image that imaging sensor currently obtains in a first direction according to first group of output valve Phase difference.
Wherein, first direction, for the direction with M to the central axis of the first focusing photosensitive unit 11.
Step 604b determines the phase difference of image in a second direction according to second group of output valve.
Wherein, second direction, for the direction with N to the central axis of the second focusing photosensitive unit 12.
Still by taking Fig. 2 b as an example, it is assumed thatFor two pole of photoelectricity on the first focusing of a pair corresponding left side of photosensitive unit 11 The output valve of pipe,For a pair first focus the corresponding the right of photosensitive unit 11 photodiode output valve, then It can determine imaging sensor 100 using following formula according to first group output valve of the M to the first focusing photosensitive unit 11 The phase difference x of the image currently obtained in the horizontal direction.
Wherein, the phase difference x in horizontal direction is light of the M to first focusing corresponding the right and left of photosensitive unit 11 Electric diode, the phase difference when two images difference minimum obtained respectively.
Similar, it is assumed thatFor a pair second focus the corresponding top of photosensitive unit 12 photodiode it is defeated It is worth out,It focuses the output valve of the corresponding following photodiode of photosensitive unit 12 for a pair second, then according to N pairs Second group of output valve of the second focusing photosensitive unit 12 can determine that imaging sensor 100 currently obtains using following formula Image phase difference y in vertical direction.
Step 604c carries out focusing control according to the phase difference on the phase difference and second direction on first direction.
Specifically, image that imaging sensor 100 currently obtains phase difference in a first direction and second party has been determined After upward phase difference, the direction for the distance and movement that camera module 500 should move can be determined according to phase difference, thus Complete focusing.
When specific implementation, a variety of sides can be passed through according to the phase difference on the phase difference and second direction on first direction Method carries out focusing control.
Method one
According to the phase difference on first direction, the first displacement of imaging sensor 100 in a first direction is determined;According to Phase difference in second direction determines the second displacement amount of camera module 500 in a second direction;According to first displacement And the second displacement amount, control camera module 500 are focused.
Specifically, determining the displacement of imaging sensor 100 in two directions respectively according to the phase difference in both direction After amount, i.e., controllable camera module 500 moves corresponding distance respectively in two directions, to complete to focus.
Method two
According to the phase difference of phase difference and second direction on first direction, the phase difference of image is determined;According to phase difference, Determine the rotation angle and displacement of camera module 500;According to rotation angle and displacement, control camera module 500 is carried out pair It is burnt.
Specifically, can determine image by preset method after the phase difference of image in two directions has been determined Phase difference.For example, can use the quadratic sum of the phase difference in both direction, the phase difference as image.Then according to image After phase difference determines rotation angle and the displacement of camera module 500, i.e., after controllable camera module 500 rotates corresponding angle, Mobile respective distances, to complete to focus.
It, then, can be with when controlling camera module 500 and being focused it is understood that further include camera lens in camera module 500 The imaging sensor 100 controlled in camera module 500 is mobile, also can control camera lens movement, to complete to focus.
Camera module image pickup processing method provided by the embodiments of the present application, first control photosensitive unit array enter focusing mould Then formula reads M to the first group of output valve and N of the first focusing photosensitive unit to the second focusing second group of photosensitive unit respectively Output valve carries out focusing control further according to first group of output valve and second group of output valve.By being arranged on photosensitive unit array Multipair focusing photosensitive unit with various arrangement direction, and utilize the defeated of the focusing photosensitive unit for the different orientations read It is worth out, focuses, improves speed, precision and the accuracy of double-core focusing.
Further, the phase difference of the image that determining imaging sensor currently obtains through the above way in a first direction After the phase difference in second direction, the depth of field of subject can also be determined according to phase difference, and then to the image that is taken Carry out virtualization processing.Below with reference to Fig. 7, camera module image pickup processing method provided by the embodiments of the present application is carried out furtherly It is bright.
Fig. 7 is the flow chart of the camera module image pickup processing method of the application another embodiment.
As shown in fig. 7, this method comprises:
Step 701, control photosensitive unit array enters focal modes.
Step 702, M is read to first group of output valve of the first focusing photosensitive unit.
Step 703, N is read to second group of output valve of the second focusing photosensitive unit.
Step 704, according to first group of output valve, the phase of image that imaging sensor currently obtains in a first direction is determined Potential difference.
Step 705, according to second group of output valve, the phase difference of image in a second direction is determined.
Wherein, step 702 and step 703 can carry out simultaneously, can also first carry out step 702, rear to execute step 703, Or step 703 is first carried out, it is rear to execute step 702, herein with no restriction.
Similar, step 704 and step 705 can carry out simultaneously, or successively carry out.
Step 706, according to the phase difference on the phase difference and second direction on first direction, current subject is determined The depth of field.
In the embodiment of the present application, the depth of field refers to the distance between subject and microlens array.
Step 707, according to the depth of field of subject, virtualization processing is carried out to subject.
Wherein, virtualization is that a kind of common shooting technology has focus point when taking pictures in viewfinder, when focus point is to arriving On subject, shutter is pressed, can be made in the image obtained, subject is that clearly, and background and other objects are empty Change.
The prior art, can be by the focal length large aperture camera lens of digital camera, being divided into inside the space taken Many levels.For example, the object nearest apart from camera lens is one layer, slightly remote physics is one layer, then remote object is another layer, with This analogizes.Focus in one layer wherein, the object of this layer can be allowed to clearly indicate out, and it is adjacent several before and after clear layer The object of layer, will be slightly hazy because not in focus, and the object of the layer remoter apart from clear layer is fuzzyyer.By these layers It is superimposed, can form subject can clearly show, and other objects with remoter apart from clear sheaf space and more mould The image of paste show.
It is focused technology by existing double-core both full-pixel, the image currently obtained according to imaging sensor is in one direction Phase difference, that is, can determine the depth of field of current subject, so that focus point is obtained void to on the layer where subject Change treated image.
However, in practice, when the phase difference of the image that imaging sensor currently obtains in one direction is smaller, But when other direction phase differences are larger, then the prior art is utilized, possibly can not accurately determine the scape of current subject It is deep, and cause the virtualization effect of subject bad to on the layer where subject focus.
And in the embodiment of the present application, by the way that the multipair focusing with various arrangement direction is arranged on imaging sensor 100 Photosensitive unit can determine the phase difference of image in different directions, thus when phase difference in a certain direction is smaller, it can also With the depth of field of more acurrate, the quick current subject of determination, and by focus accurately to on the layer where subject, from And the spatial impression and stereovision of the image made are stronger, virtualization effect is more preferable.
Wherein, the specific implementation process and principle of above-mentioned steps 701- step 705, is referred to step in above-described embodiment The detailed description of 601-604, details are not described herein again.
Camera module image pickup processing method provided by the embodiments of the present application, first control photosensitive unit array enter focusing mould Then formula reads M to the first group of output valve and N of the first focusing photosensitive unit to the second focusing second group of photosensitive unit respectively Output valve determines the depth of field of current subject further according to first group of output valve and second group of output valve, thus to subject Carry out virtualization processing.By the way that the multipair focusing photosensitive unit with various arrangement direction, and benefit are arranged on photosensitive unit array It with the output valve of the focusing photosensitive unit of the different orientations of reading, focuses, improves speed, the precision of double-core focusing And accuracy, the spatial impression and stereovision of the image of imaging sensor acquisition are enhanced, the virtualization effect of image is optimized.
Based on the above embodiment, the application also proposes a kind of camera module camera treatment device.
Specifically, camera module 500 includes imaging sensor 100 provided by the embodiments of the present application.
Wherein, the structure of imaging sensor 100 is as Figure 1-Figure 4, and details are not described herein again.
Fig. 8 is the structure chart of the camera module camera treatment device of the application one embodiment.
As shown in figure 8, the camera module camera treatment device includes:
First control module 81 enters focal modes for controlling the photosensitive unit array;
First read module 82, for reading the M to first group of output valve of the first focusing photosensitive unit;
Second read module 83, for reading the N to second group of output valve of the second focusing photosensitive unit;
Second control module 84, for carrying out focusing control according to first group of output valve and second group of output valve System.
Wherein, camera module camera treatment device provided in this embodiment, can be configured in any terminal, for holding Camera module image pickup processing method in row previous embodiment.
It should be noted that being also suitable in previous embodiment to the explanation of camera module image pickup processing method embodiment In the camera module camera treatment device of the embodiment, details are not described herein again.
Camera module camera treatment device provided by the embodiments of the present application, first control photosensitive unit array enter focusing mould Then formula reads M to the first group of output valve and N of the first focusing photosensitive unit to the second focusing second group of photosensitive unit respectively Output valve carries out focusing control further according to first group of output valve and second group of output valve.By being arranged on photosensitive unit array Multipair focusing photosensitive unit with various arrangement direction, and utilize the defeated of the focusing photosensitive unit for the different orientations read It is worth out, focuses, improves speed, precision and the accuracy of double-core focusing.
Fig. 9 is the structure chart of the camera module camera treatment device of the application another embodiment.
As shown in figure 9, above-mentioned second control module 84, can specifically include:
First determination unit 841, for determining that described image sensor 100 is currently obtained according to first group of output valve The phase difference of the image taken in a first direction;
Second determination unit 842, for determining the phase of described image in a second direction according to second group of output valve Potential difference;
Control unit 843, for being carried out pair according to the phase difference on the phase difference and second direction on the first direction Coke control.
In a kind of possible way of realization of the application, above-mentioned control unit 841 is specifically used for:
According to the phase difference on the first direction, first of described image sensor 100 in a first direction is determined Shifting amount;
According to the phase difference in the second direction, the second displacement of the camera module 500 in a second direction is determined Amount;
According to first displacement and the second displacement amount, controls the camera module 500 and focus.
In the alternatively possible way of realization of the application, above-mentioned control unit 841 is also used to:
According to the phase difference of phase difference and the second direction on the first direction, the phase of described image is determined Difference;
According to the phase difference, the rotation angle and displacement of the camera module 500 are determined;
According to the rotation angle and displacement, controls the camera module 500 and focus.
It is understood that camera module 500 further include: camera lens.
In the alternatively possible way of realization of the application, above-mentioned control unit 841 is also used to:
It controls described image sensor 100 and/or the camera lens is mobile, focus.
In the alternatively possible way of realization of the application, camera module camera treatment device, further includes:
Determining module, for determining current according to the phase difference on the phase difference and second direction on the first direction The depth of field of subject;
Processing module, for carrying out virtualization processing to the image that is taken according to the depth of field.
It should be noted that being also suitable in previous embodiment to the explanation of camera module image pickup processing method embodiment In the camera module camera treatment device of the embodiment, details are not described herein again.
Camera module camera treatment device provided by the embodiments of the present application, first control photosensitive unit array enter focusing mould Then formula reads M to the first group of output valve and N of the first focusing photosensitive unit to the second focusing second group of photosensitive unit respectively Output valve carries out focusing control further according to first group of output valve and second group of output valve.By being arranged on photosensitive unit array Multipair focusing photosensitive unit with various arrangement direction, and utilize the defeated of the focusing photosensitive unit for the different orientations read It is worth out, focuses, improve speed, precision and the accuracy of double-core focusing, enhances the image of imaging sensor acquisition Spatial impression and stereovision optimize the virtualization effect of image.
Further aspect of the present invention embodiment also proposes a kind of terminal device.Figure 10 is the end that the application one embodiment provides The structure chart of end equipment.
As shown in Figure 10, which includes shell 101, circuit board 102, camera module 500 and power circuit 103, Wherein, the circuit board 102 is placed in the space interior that the shell 101 surrounds;The power circuit 103, for being described The each circuit or device of terminal device are powered.
Specifically, camera module 500 include imaging sensor 100, imaging sensor 100 include: photosensitive unit array 10, Filter unit array 20 on the photosensitive unit array 10 is set, and micro- on the filter unit array 20 Lens array 30;
Wherein, include in the photosensitive unit array 10 M to the first focusing photosensitive unit 11 and N to the second photosensitive list of focusing Member 12, a lenticule unit 31 cover a filter unit and a pair of of focusing photosensitive unit, wherein each pair of focusing photosensitive unit Center line with this to focusing the orientation of photosensitive unit it is parallel;
The center line of a pair the first focusing photosensitive unit 11, the friendship for the centreline space of photosensitive unit 12 of focusing with a pair second Angle is greater than 0 degree, and M and N are the positive integer more than or equal to 1.
In a kind of possible way of realization, above-mentioned terminal device can also include memory 104, processor 105;
The processor 105 and the memory 104 are arranged on the circuit board 102;The memory 104 is for depositing Store up executable program code;The processor 405 is transported by reading the executable program code stored in the memory 104 Row program corresponding with the executable program code, for executing following steps:
The photosensitive unit array 10 is controlled into focal modes;
The M is read to first group of output valve of the first focusing photosensitive unit 11;
The N is read to second group of output valve of the second focusing photosensitive unit 12;
According to first group of output valve and second group of output valve, focusing control is carried out.
It should be noted that the aforementioned explanation to imaging sensor and camera module image pickup processing method embodiment Suitable for the terminal device of the embodiment, realization principle is similar, and details are not described herein again.
In terminal device provided by the embodiments of the present application, camera module includes photosensitive unit array, is arranged described photosensitive Filter unit array in cell array, and the imaging sensor of the microlens array on the filter unit array, By the way that the multipair focusing photosensitive unit with various arrangement direction is arranged on photosensitive unit array, and utilize the different rows read The output valve of the focusing photosensitive unit of column direction, focuses, improves speed, precision and the accuracy of double-core focusing.
In order to achieve the above object, the embodiment of the present application proposes a kind of computer readable storage medium, it is stored thereon with calculating Machine program is realized when the program is executed by processor such as the camera module image pickup processing method in previous embodiment.
In order to achieve the above object, the embodiment of the present application proposes a kind of computer program product, when the computer program produces When instruction processing unit in product executes, execute such as the camera module image pickup processing method in previous embodiment.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory (ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene Programmable gate array (FPGA) etc..
It should be noted that in the description of this specification, reference term " one embodiment ", " is shown " some embodiments " The description of example ", " specific example " or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure, Material or feature are included at least one embodiment or example of the invention.In the present specification, above-mentioned term is shown The statement of meaning property is necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the spy of description Point may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, Those skilled in the art can be by different embodiments or examples described in this specification and different embodiments or examples Feature is combined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (9)

1. a kind of imaging sensor characterized by comprising photosensitive unit array is arranged on the photosensitive unit array Filter unit array, and the microlens array on the filter unit array;
It wherein, include the M first focusing photosensitive unit parallel to each other to center line and N in the photosensitive unit array to center Line the second focusing photosensitive unit parallel to each other, a lenticule unit cover a filter unit and a pair of photosensitive list of focusing Member;
The center line of a pair the first focusing photosensitive unit is greater than 0 with the angle of cut of the centreline space of a pair the second focusing photosensitive unit Degree, M and N are the positive integer more than or equal to 1;
In the photosensitive unit array further include: third focusing photosensitive unit L parallel to each other to center line, L is to be greater than or wait In 1 positive integer;
Wherein, a pair of of third focusing photosensitive unit, respectively by a filter unit and a lenticule unit covering;
The center line of a pair of of third focusing photosensitive unit, the center line and described one with the pair of first focusing photosensitive unit 0 degree is respectively greater than to the angle of cut of the centreline space of the second focusing photosensitive unit.
2. imaging sensor as described in claim 1, which is characterized in that the M is to the first focusing photosensitive unit and N to second Focusing photosensitive unit, is separately positioned in the vertical centerline and horizontal center line of described image sensor.
3. imaging sensor as claimed in claim 2, which is characterized in that the M is to the first focusing photosensitive unit and N to second It focuses photosensitive unit, is also separately positioned on two groups of described image sensor on sideline.
4. imaging sensor as claimed in claim 3, which is characterized in that the vertical centerline and level of described image sensor The density of focusing photosensitive unit on center line, greater than two groups of described image sensor to the focusing photosensitive unit on sideline Density.
5. the imaging sensor as described in claim 1-4 is any, which is characterized in that M=N.
6. the imaging sensor as described in claim 1-4 is any, which is characterized in that the center of each pair of first focusing photosensitive unit The central axis of line and each pair of second focusing photosensitive unit.
7. imaging sensor as described in claim 1, which is characterized in that the M is to the first focusing photosensitive unit, N to second Focus photosensitive unit and L focuses photosensitive unit to third, be separately positioned on described image sensor horizontal center line, first pair On linea angulata and the second diagonal line.
8. a kind of camera module, which is characterized in that including imaging sensor as claimed in claim 1.
9. a kind of terminal device, which is characterized in that including shell, circuit board, camera module and power circuit, wherein the electricity Road plate is placed in the space interior that the shell surrounds;The power circuit, for for the terminal device each circuit or Device power supply;
The camera module includes imaging sensor, and described image sensor includes: photosensitive unit array, is arranged described photosensitive Filter unit array in cell array, and the microlens array on the filter unit array;
It wherein, include the M first focusing photosensitive unit parallel to each other to center line and N in the photosensitive unit array to center line Second focusing photosensitive unit parallel to each other, a lenticule unit cover a filter unit and a pair of of focusing photosensitive unit, Wherein, the center line of each pair of focusing photosensitive unit is parallel to the focusing orientation of photosensitive unit with this;
The center line of a pair the first focusing photosensitive unit is greater than 0 with the angle of cut of the centreline space of a pair the second focusing photosensitive unit Degree, M and N are the positive integer more than or equal to 1;
In the photosensitive unit array further include: third focusing photosensitive unit L parallel to each other to center line, L is to be greater than or wait In 1 positive integer;
Wherein, a pair of of third focusing photosensitive unit, respectively by a filter unit and a lenticule unit covering;
The center line of a pair of of third focusing photosensitive unit, the center line and described one with the pair of first focusing photosensitive unit 0 degree is respectively greater than to the angle of cut of the centreline space of the second focusing photosensitive unit.
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