CN109844766A - Optical image acquisition system and electronic equipment - Google Patents
Optical image acquisition system and electronic equipment Download PDFInfo
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- CN109844766A CN109844766A CN201980000123.6A CN201980000123A CN109844766A CN 109844766 A CN109844766 A CN 109844766A CN 201980000123 A CN201980000123 A CN 201980000123A CN 109844766 A CN109844766 A CN 109844766A
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Abstract
The embodiment of the present application discloses a kind of optical image acquisition system and electronic equipment, the optical image acquisition system includes: multiple optical image acquisition units, each optical image acquisition unit includes photoelectric sensor and lenticule square on the photosensors is arranged, and the lenticule is used to the optical signal above the lenticule converging to the photoelectric sensor；Wherein, the multiple optical image acquisition unit includes the first adjacent two-by-two optical image acquisition unit, the second optical image acquisition unit and third optical image acquisition unit, and the line at the center of the photoelectric sensor of the first optical image acquisition unit, the second optical image acquisition unit and the third optical image acquisition unit constitutes acute triangle.
Description
Technical field
The invention relates to information technology fields, and more particularly, to a kind of optical image acquisition system and
Electronic equipment.
Background technique
With the high speed development of terminal industry, biological identification technology is increasingly paid attention to by people, more easily under screen
Biometrics identification technology, such as the functionization of the lower fingerprint identification technology of screen have become needed for masses.
In one implementation, shielding lower biometrics identification technology can be realized by lenticule, specifically, be passed through
Lenticule will be reflected from finger surface or is scattered back in the photosensitive region that the optical signal come is directed to optical sensor, and then be realized
Shield lower living things feature recognition.But limited by the processing technology of lenticule, the spacing between adjacent lenticule has to be larger than
Or equal to minimum spacing required by processing technology, this allows for the area that can receive the photosensitive region of optical signal in unit area
It reduces, and then influences fingerprint recognition rate.
Summary of the invention
The embodiment of the present application provides a kind of optical image acquisition system and electronic equipment, and being able to ascend in unit area can
Receive the area of the photosensitive region of optical signal.
In a first aspect, providing a kind of optical image acquisition system, comprising:
Multiple optical image acquisition units, each optical image acquisition unit include photoelectric sensor and are arranged in the light
Lenticule above electric transducer, the lenticule are used to the optical signal above the lenticule converging to the photoelectricity
Sensor；
Wherein, the multiple optical image acquisition unit includes the first adjacent two-by-two optical image acquisition unit, second
Optical image acquisition unit and third optical image acquisition unit, the first optical image acquisition unit include the first photoelectric transfer
Sensor, the second optical image acquisition unit include the second photoelectric sensor, and the third optical image acquisition unit includes
Third photoelectric sensor, first photoelectric sensor, in second photoelectric sensor and the third photoelectric sensor
The line of the heart constitutes acute triangle.
In some possible implementations, first photoelectric sensor, second photoelectric sensor and described
The line at the center of three photoelectric sensors constitutes equilateral triangle.
In some possible implementations, the corresponding pixel unit of the photoelectric sensor, the equilateral triangle
Side length is equal to the side length of the pixel unit, wherein the pixel unit is square.
In some possible implementations, the first optical image acquisition unit includes the first pixel unit, described
Second optical image acquisition unit includes the second pixel unit, and the third optical image acquisition unit includes third pixel list
Member；
Wherein, the regional area of first pixel unit, second photoelectricity is arranged in first photoelectric sensor
The regional area of second pixel unit is arranged in sensor, and the third photoelectric sensor is arranged in the third pixel list
The regional area of member.
In some possible implementations, first pixel unit and second pixel unit are adjacent but do not weigh
Folded, the partial region of the third pixel unit is heavy with first pixel unit and second pixel unit part respectively
It is folded.
In some possible implementations, by designing first pixel unit, second pixel unit and institute
State the circuit trace in non-inductive region in third pixel unit so that the third pixel unit and first pixel unit and
Second pixel unit partly overlaps.
In some possible implementations, by designing first pixel unit, second pixel unit and institute
The circuit trace in the non-inductive region in third pixel unit is stated, so that the third pixel unit is arranged in first pixel
In the white space reserved in unit and second pixel unit.
In some possible implementations, the first optical image acquisition unit includes the first lenticule, and described the
Two optical image acquisition units include the second lenticule, and the third optical image acquisition unit includes third lenticule, described
First lenticule, the spacing of second lenticule and the third lenticule between any two are greater than or equal to first threshold.
In some possible implementations, the center of lenticule and corresponding photoelectricity in the optical image acquisition unit
The line at the center of sensor is perpendicular to plane where the photoelectric sensor.
In some possible implementations, the optical signal of the photoelectric sensor detection is used to form the one of acquisition image
The optical signal of a pixel, the light point sensor detection in the multiple optical image acquisition unit is used to form a sub-picture.
In some possible implementations, the optical image acquisition unit further include:
Wave filtering layer is set to the lenticule into the optical path between the photoelectric sensor, for filtering non-targeted wave
The optical signal of section, through the optical signal of target wave band.
In some possible implementations, the optical image acquisition system is living creature characteristic recognition system or camera
System.
In some possible implementations, the material of the lenticule is organic material.
In some possible implementations, the optical image acquisition system further include:
Supporting structure is used to support the optical image acquisition system.
In some possible implementations, light spirit of the photoelectric sensor for blue and green light, feux rouges or infrared light
Sensitivity is greater than the first predetermined threshold, and quantum efficiency is greater than the second predetermined threshold.
Second aspect provides a kind of electronic equipment, comprising: display screen and any of first aspect or first aspect can
Optical image acquisition system in the implementation of energy, wherein the optical image acquisition system is set under the display screen
Side.
In some possible implementations, the display screen is organic light-emitting diode (OLED) display screen, the display screen
Luminescent layer includes multiple organic light-emitting diode light sources, wherein the optical image acquisition system be living things feature recognition system
When system, the living creature characteristic recognition system uses at least partly excitation of the organic light-emitting diode light source as living things feature recognition
Light source.
Detailed description of the invention
Fig. 1 is the floor map for the electronic equipment that the application can be applicable in.
Fig. 2 is partial cutaway schematic view of the electronic equipment shown in FIG. 1 along A '-A '.
Fig. 3 is a kind of schematic diagram of typical arrangement mode of pixel unit.
Fig. 4 is the schematic diagram according to the arrangement mode of the optical image acquisition unit of one embodiment of the application.
Fig. 5 is the schematic diagram according to the arrangement mode of the optical image acquisition unit of another embodiment of the application.
Fig. 6 is the schematic diagram according to the arrangement mode of the optical image acquisition unit of the application another embodiment.
Fig. 7 is showing according to the increased photosensitive area of the arrangement mode of the optical image acquisition unit of the embodiment of the present application
It is intended to.
Fig. 8 is the schematic diagram of the optical image acquisition system of another embodiment of the application.
Specific embodiment
Below in conjunction with attached drawing, technical solutions in the embodiments of the present application is described.
The technical solution of the embodiment of the present application can be applied to various electronic equipments, for example, smart phone, laptop,
The portable or mobiles such as tablet computer, game station calculate equipment and electronic databank, automobile, ATM (automatic teller machine)
Other electronic equipments such as (Automated Teller Machine, ATM), but the embodiment of the present application does not limit this.
The technical solution of the embodiment of the present application can be used for shielding lower optical image acquisition, for example, shielding lower living things feature recognition
Or shield lower concealed pick-up head function etc., wherein living things feature recognition, can also be special for other biological other than fingerprint recognition
Sign identification, for example, vivo identification etc., the embodiment of the present application does not also limit this.The skill of the embodiment of the present application in order to facilitate understanding
Art scheme is first below introduced biometrics identification technology under shielding.
Figures 1 and 2 show that shielding the schematic diagram for the electronic equipment 10 that lower biometrics identification technology can be applicable in, wherein
Fig. 1 is the front schematic view of electronic equipment 10, and Fig. 2 is cut-away section structural representation of the electronic equipment 10 shown in FIG. 1 along A '-A '
Figure.
As depicted in figs. 1 and 2, the electronic equipment 10 includes display screen 120 and biometric devices 130, wherein
The regional area below the display screen 120 is arranged in the biometric devices 130, for example, display screen intermediate region
Lower section.The biometric devices 130 can be specially optical bio specific identification device, such as optical finger print dress
It sets, is mainly used for acquiring the biological information (such as information in fingerprint) of user, to be used for living things feature recognition.It is described
Optical finger print device includes the induction arrays with multiple pixel units, the induction arrays region or its induction region
For the physical characteristics collecting region 103 of the biometric devices 130.As shown in Figure 1, the physical characteristics collecting region
103 are located among the display area of the display screen 120.
It should be appreciated that the area in the fingerprint detection region 103 can be with the induction arrays of the optical finger print device 130
Area it is different, such as example, by light path design, reflective foldings light path design or other light convergence of lens imaging
Or the light path designs such as reflection, the area in the fingerprint detection region 103 of the optical finger print device 130 can be made to be greater than described
The area of 130 induction arrays of optical finger print device.
Therefore, user is when needing to be unlocked the electronic equipment 10 or other biological signature verification, only
It needs to press finger in the physical characteristics collecting region 103 for being located at the display screen 120, can realize that biological characteristic inputs
Operation.Since physical characteristics collecting detection can be realized inside the display area of the display screen 120, using the above structure
Electronic equipment 10 is arranged fingerprint key (such as Home key) without the special reserved space in its front, thus can be using screen comprehensively
Scheme.Therefore, the display area of the display screen 120 can extend substantially to the entire front of the electronic equipment 10
As a kind of optional implementation, as shown in Fig. 2, the biometric devices 130 include optical detection part
Divide 134 and optical module 132, the light detecting portion 134 includes induction arrays and is electrically connected with the induction arrays
Reading circuit and other auxiliary circuits can be produced on a chip (Die), such as optical imagery by semiconductor technology
Chip or optical fingerprint sensor, the induction arrays are specially optical detector (Photo Detector, PD) array, packet
Include multiple optical detectors in array distribution；The induction in the light detecting portion 134 can be set in the optical module 132
The top of array can specifically include filter layer (Filter), optical waveguide layer or light for example, the top of optical detector is arranged in
Pass guide structure and other optical elements, the filter layer can be used for filtering out the environment light for penetrating finger, and the leaded light
Layer or optical path guide structure are mainly used for being directed to the induction arrays progress optics from the reflected reflected light of finger surface
Detection.
In specific implementation, it is special that the optical module 132 can be encapsulated in the same biology with the light detecting portion 134
Levy identification component.For example, the optical module 132 can be encapsulated in the same biological characteristic with the optical detecting parts 134
The chip exterior where the light detecting portion 134 can also be arranged in the optical module 132 by identification chip, such as will
The optical module 132 is fitted in above the chip, or the subelement of the optical module 132 is integrated in above-mentioned core
Among piece.
As one embodiment, the optical waveguide layer or optical path guide structure can specifically use lenticule (Micro-
Lens) layer, the microlens layer have the microlens array formed by multiple lenticules, can pass through semiconductor growing process
Or other techniques are formed in above the induction arrays of the light detecting portion 134, and each lenticule can be right respectively
One of sensing unit of induction arrays described in Ying Yu.
In addition, other optical film layers, such as dielectric layer can also be formed between the microlens layer and the sensing unit
Or passivation layer, more specifically, can also include the light blocking layer with micropore between the microlens layer and the sensing unit,
Wherein the micropore is formed between its corresponding lenticule and sensing unit, the light blocking layer can stop contiguous microlens and
Optical interference between sensing unit, and it is described that light corresponding to the sensing unit is converged to by the lenticule
The sensing unit is transferred to inside micropore and via the micropore to carry out biological characteristic imaging.
As a kind of optional embodiment, the display screen 120 can use the display screen with spontaneous light display unit,
Such as Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display screen or micro-led
(Micro-LED) display screen.For using OLED display screen, the biometric devices 130 can use described
OLED display screen 120 is located at the display unit (i.e. OLED light source) in the physical characteristics collecting region 103 as biological characteristic
The excitation light source of detection.
By taking fingerprint detection as an example, for example, when finger pressing at the physical characteristics collecting region 103, display screen 120 to
The target finger of 103 top of physical characteristics collecting region issues light beam, which reflects to form on the surface of finger
Reflected light scatters by the finger interior and forms scattering light, in the related patent applications, for ease of description, above-mentioned anti-
It penetrates light and scattering light is referred to as reflected light.Since the ridge (ridge) and valley (vally) of fingerprint are different for the albedo of light,
Therefore, the reflected light from fingerprint ridge and the reflected light from fingerprint valley have different light intensity, and reflected light passes through optical module
After 132, corresponding electric signal, i.e. fingerprint detection are received and converted to by the induction arrays in biometric devices 130
Signal；Fingerprint image data can be obtained based on the fingerprint detection signal, and can be tested with further progress fingerprint matching
Card, to realize optical finger print identification function in the electronic equipment 10.
In other embodiments, the biometric devices 130 can also use built-in light source or external light source
To provide the optical signal for carrying out biological characteristic detection.In this case, the biometric devices 130 can fit
For non-spontaneous smooth display screen, such as liquid crystal display or other passive light emitting displays.To apply with backlight mould
For the liquid crystal display of group and liquid crystal display panel, biological characteristic is detected under the screen to support liquid crystal display, the electronic equipment
10 biometric devices can also include the excitation light source for biological characteristic detection, and the excitation light source can be specific
For infrared light supply or the light source of specific wavelength non-visible light, can be set below the backlight module of the liquid crystal display
Or the fringe region below the cover sheet of the electronic equipment 10 is set, and the biometric devices 130 can
To be arranged below the fringe region of liquid crystal display panel or cover sheet and be guided by optical path so that biological characteristic detection light can
To reach the biometric devices 130；Alternatively, the biometric devices 130 also can be set in the back
Below optical mode group, and the backlight module is by carrying out aperture or other optics to film layers such as diffusion sheet, blast piece, reflector plates
Design is to allow biological characteristic detection light to pass through liquid crystal display panel and backlight module and reach the biometric devices 130.
In other substitution implementations, the display screen 120 can also use the display screen of non-spontaneous light, for example use the liquid of backlight
Crystal display screen；In this case, the optical detection apparatus 130 just can not be made using the display unit of the display screen 120
To motivate light source, it is therefore desirable to be internally integrated excitation light source in the optical detection apparatus 130 or excitation is arranged outside it
Light source come realize optical finger print detect, when using the biometric devices 130 use built-in light source or external light source
Come when providing the optical signal for carrying out fingerprint detection, testing principle is consistent with content is described above.
It should be understood that the electronic equipment 10 further includes transparency protected cover board 110, the lid in specific implementation
Plate can be glass cover-plate or sapphire cover board, be located at the top of the display screen 120 and cover the electronic equipment 10
Front.Because in the embodiment of the present application, so-called finger pressing actually refers to pressing described in the display screen 120
The cover board of 120 top of display screen or the protective layer of the covering cover board.
In certain embodiments, the living things feature recognition mould group 130 can be specially optical bio specific identification device,
Such as optical finger print device, in this case, the biometric devices 130 can only include an optical finger print sensing
Device, the area in the physical characteristics collecting region 103 of biometric devices 130 is smaller at this time and position is fixed, therefore user
In the specific position for carrying out needing for finger to be pressed into the physical characteristics collecting region 103 when fingerprint input, otherwise biology is special
Sign identification device 130 possibly can not collect fingerprint image and cause user experience bad.It is described in other alternate embodiments
Biometric devices 130 can specifically include multiple optical fingerprint sensors；The multiple optical fingerprint sensor can be with
The lower section of the display screen 120, and the induction region of the multiple optical fingerprint sensor are disposed side by side on by connecting method
Collectively form the physical characteristics collecting region 103 of the biometric devices 130.In other words, the biological characteristic is known
The physical characteristics collecting region 103 of other device 130 may include multiple subregions, and each subregion corresponds respectively to one of them
The induction region of optical fingerprint sensor, so that the fingerprint collecting region 103 of the optical finger print mould group 130 can extend to
The main region of the lower half portion of the display screen expands to the usual pressing area of finger, to realize blind defeated by formula fingerprint
Enter operation.Alternatively, when the optical fingerprint sensor quantity is enough, the fingerprint detection region 130 can also extend
To half of display area even entire display area, to realize half screen or full frame fingerprint detection.
In some embodiments, which may include optical image acquisition system, the optics
Image capturing system may include multiple optical image acquisition units, when the optical module using lenticule to realize when, institute
Stating optical image acquisition unit may include pixel unit (pixel cell) and is arranged in above the pixel unit
The array of lenticule, the pixel unit in the multiple optical image acquisition unit may be constructed in the light detecting portion 134,
It specifically, may include an optical detector PD in each pixel unit, which is arranged in the regional area of the pixel unit,
Other regions in the pixel unit can be used for that the reading circuit and other auxiliary circuits being electrically connected with the PD is arranged, should
PD in multiple optical image acquisition units may be constructed previously described induction arrays, and in the concrete realization, which sets
Set can be specially above pixel unit the PD that lenticule is arranged in pixel unit top.
Fig. 3 thus in the case of a kind of typical arrangement mode schematic diagram, as shown in figure 3, each pixel unit 101 can
To include a photoelectric sensor 102, correspond to previously described PD, which is arranged in the pixel unit 101
In regional area, other regions in the pixel unit 101 can be used for being arranged the reading circuit or other auxiliary circuits of PD.
The top of the photoelectric sensor 102 is provided with pico- lens 103, the reflected light signal for will reflect to form from user's finger
Converge to the photoelectric sensor 102.Pixel unit 101 is usually the square that side length is L, and is between pixel unit 101
Alignment, correspondingly, photoelectric sensor 102 and lenticule 103 are also alignment, by the processing technology of lenticule
It limits, the spacing between adjacent lenticule has to be larger than or is equal to minimum spacing d, since the region except lenticule is impermeable
Light, this results in the effective area of the receivable optical signal in unit area lower, influences fingerprint recognition performance.For example, right
For arrangement mode shown in Fig. 3, effectively receive the accounting of the photosensitive area of optical signal in unit area, i.e. unit area
Receive light rate ε1Are as follows:
Assuming that d=0.1L, then ε1Approximation is only 63.62%.
In view of this, the embodiment of the present application provides a kind of optical image acquisition system, arranged (i.e. using non-alignment mode
Dislocation arrangement) pixel unit, in this case, the side of spacing between lenticule by the original certain edges thereof for being parallel to pixel unit
Upward spacing be converted to the spacing on the certain edges thereof of pixel unit direction at an angle, in other words, be equivalent to by
Adjacent pixel unit is arranged into this light pixel unit, so as to promote the significant surface that can receive optical signal in unit area
Product.
Fig. 4 shows the schematic diagram of the optical image acquisition system 200 of the application one embodiment.It should be understood that Fig. 4 is this
The top view of optical image acquisition system 200, in a three-dimensional structure, lenticule is arranged in above pixel unit, such as Fig. 8 institute
Show.
As shown in figure 4, the optical image acquisition system 200 may include multiple optical image acquisition units.Each optics
Image acquisition units may include photoelectric sensor 202 and the lenticule 203 that 202 top of photoelectric sensor is arranged in, institute
Lenticule 203 is stated for the optical signal above lenticule 203 to be converged to the photoelectric sensor 202.
Specifically, multiple optical image acquisition units may include multiple pixel units, pixel unit as shown in Figure 4
210~230, photoelectric sensor is arranged in the regional area of the pixel unit, for example, being provided with photoelectric transfer in pixel unit 220
Sensor 202, the photoelectric sensor can correspond to the optical detector PD in previously described sensing unit (or induction arrays), should
The array that photoelectric sensor in multiple pixel units is constituted can correspond to previously described induction arrays, a pixel unit
In reading for being electrically connected with photoelectric sensor can be set in other regions in addition to the photoelectric sensor region
Sense circuit and other auxiliary circuits.
In the embodiment of the present application, photoelectric sensor 202 can detecte the light of the corresponding region above lenticule 203
Signal, and then pixel value can be obtained according to the light intensity of optical signal.The optical signal that photoelectric sensor 202 detects can be used for being formed
A pixel of image is acquired, which indicates the characteristic value of corresponding region above the optical image acquisition unit.That is,
The signal of one optical image acquisition unit acquisition forms a pixel of image, in this way, passing through multiple optical image acquisition lists
The available sub-picture of signal of member acquisition.
In the embodiment of the present application, be that non-alignment is arranged between optical image acquisition unit, in other words, pixel unit it
Between be that non-alignment is arranged, for example, as shown in figure 4, pixel unit 220 and the setting of 230 non-alignment of pixel unit, in other words, wrong
It opens up and sets.
As a kind of optional implementation, the photoelectric sensor between adjacent rows can be arranged in a staggered manner along X-axis, this
Sample, the line at the center of the photoelectric sensor in the capable pixel unit adjacent with row are changed into and Y-axis by the original Y-axis that is parallel to
Shape is (specially acute angle) at a certain angle.For example, as shown in figure 4, can be in sharp to the positive direction of X-axis by pixel unit 230
The direction at angle is moved a certain distance to pixel unit 220, while guaranteeing pixel unit 230 and pixel unit 210 and pixel list
The spacing of first 220 corresponding lenticules is greater than or equal to minimum spacing d, in this way, the spacing between lenticule is by original along Y-axis
Minimum spacing d on direction is changed into the minimum spacing d in a certain angle with Y-axis, in the identical situation of spacing, relative to drawing
The distance between close adjacent center of pixel unit, that is, relative to the photosensitive area increased in unit area.
As another optional implementation, the photoelectric sensor between adjacent column can be arranged in a staggered manner along Y-axis, this
The line of sample, the center of the photoelectric sensor of the column pixel unit adjacent with arranging is changed into and X-axis shape by the original X-axis that is parallel to
(specially acute angle) at a certain angle.For example, as shown in figure 5, can be at an acute angle by the positive direction of pixel unit 230 to Y-axis
Direction moved a certain distance to pixel unit 220, while guaranteeing pixel unit 230 and pixel unit 210 and pixel unit
The spacing of lenticule in 220 is greater than or equal to minimum spacing d, in this way, spacing between lenticule by it is original along the x axis
On spacing be changed into the spacing in a certain angle with X-axis, in the identical situation of spacing, relative to the adjacent pixel that furthered
The distance between center of unit, that is, relative to the photosensitive area increased in unit area.
Comparison diagram 3 is can be seen that Fig. 5 in alignment arrangement mode shown in Fig. 3, in adjacent optical image acquisition list
In member, the spacing between lenticule is the spacing being parallel on the direction of X-axis or Y-axis；In non-alignment arrangement mode, lenticule
Between spacing be converted to the spacing on X-axis or Y direction direction at an angle, this is equivalent to further adjacent
The distance between pixel unit center, or it can be appreciated that by the part photosensitive region setting of adjacent pixel unit to originally
In pixel unit, the effective area that can receive optical signal in unit area is improved.
Optionally, in the application one embodiment, the multiple optical image acquisition unit includes the first optical imagery
Acquisition unit, the second optical image acquisition unit and third optical image acquisition unit, the first optical image acquisition unit
Including the first photoelectric sensor, the second optical image acquisition unit includes the second photoelectric sensor, the third optical picture
As acquisition unit includes third photoelectric sensor, first photoelectric sensor, second photoelectric sensor and the third
The line at the center of photoelectric sensor constitutes acute triangle.
It should be understood that in the embodiment of the present application, as long as adjacent pixel unit is arranged in a staggered manner along X-axis and/or Y-axis, moving
Dynamic a certain distance, while guaranteeing that the spacing between the lenticule in adjacent optical image acquisition unit is more than or less than minimum
The spacing in X-axis or Y direction (i.e. right-angle side) original between lenticule can be converted to bevel edge direction by spacing d
On spacing, so as to play the role of increase unit area in photosensitive area, the embodiment of the present application is for specifically arranging
Mode for cloth is not construed as limiting.
In a specific embodiment, first photoelectric sensor, second photoelectric sensor and the third light
The line at the center of electric transducer constitutes equilateral triangle.As shown in fig. 6, the first optical image acquisition unit includes the first light
Electric transducer 212 and the first lenticule 213 that 212 top of the first photoelectric sensor is set, second optical imagery
Acquisition unit includes the second photoelectric sensor 222 and the second lenticule that 222 top of the second photoelectric sensor is arranged in
223, the third optical image acquisition unit includes third photoelectric sensor 232 and is arranged in the third photoelectric sensor
The third lenticule 233 of 232 tops.
Wherein, first photoelectric sensor 212, second photoelectric sensor 222 and the third photoelectric sensor
The line at 232 center constitutes equilateral triangle, wherein the side length of the equilateral triangle is pixel unit 210, pixel unit 220
With the side length L of pixel unit 230.
Under this arrangement mode, in conjunction with Fig. 7, illustrate effectively to receive light rate in unit area.
When the line of centres of three adjacent photoelectric sensors is equilateral triangle, in two adjacent photoelectric sensors
Spacing between the heart is L, which is the side length of pixel unit, with the square 240 in Fig. 7 for unit area, determines and effectively receives light
Rate.Comparison diagram 3 and Fig. 7 it is found that relative to alignment arrangement mode, when using non-alignment mode arrangement mode, square 240 in institute
Increased photosensitive area is the area of Fig. 7 bend part, including two right angled triangles 242 and two acute sectors 241.
Wherein, the length of the short side of the right angled triangle 242 isThe length of the hypotenuse of right angled triangle 242
For the radius of lenticule, i.e.,
Thus, the angle theta between right angled triangle short side and bevel edge can indicate are as follows:
It may further determine the long side of right angled triangle are as follows:
Then, the area S of right angled triangle 2421Are as follows:
Further determine that the area of acute sectors 241, wherein the angle of acute sectors are as follows: 90 ° of-θ, radius are lenticule
Radius, then the area of acute sectors are as follows:
S2=π * ((L-d)/2)2* (90 ° of-θ)/360 ° of formula (3)
The incrementss that may thereby determine that photosensitive area in unit area are 2 (S1+S2), then it is 2 that the increasing for effectively receiving light rate, which is compared,
(S1+S2)/L2。
In a concrete condition, such as d=0.1*L, θ=72.68 ° can be obtained by bringing formula (1) into, θ band respectively
Entering formula (2) formula and formula (3) can obtain: the area S of right angled triangle 2421=0.0288*L2, the area S of acute sectors 2412
=0.0308*L2, then in unit area photosensitive area incrementss are as follows: 2 (S1+S2)=0.1192*L2, i.e., arranged relative to alignment
Mode for cloth effectively receives light rate using non-alignment arrangement mode, in unit area and improves 11.92%, up to 75.54%.
Optionally, in the application one embodiment, the first optical image acquisition unit includes the first pixel unit,
The second optical image acquisition unit includes the second pixel unit, and the third optical image acquisition unit includes third pixel
Unit, wherein first pixel unit and second pixel unit are adjacent but be not overlapped, the third pixel unit difference
It partly overlaps with first pixel unit and second pixel unit.That is, compared with being aligned arrangement mode, relatively
In the region being moved to the part photosensitive region of third pixel unit where the first pixel unit and the second pixel unit, this
Sample, relative to the photosensitive area increased in the first pixel unit and the second pixel unit, also with respect to improving unit plane
Photosensitive area in product.
It in the concrete realization, can be by designing first pixel unit, second pixel unit and the third
The circuit trace in other regions in pixel unit in addition to photosensor region, so that the third pixel unit and institute
It states the first pixel unit and second pixel unit partly overlaps.
In other words, the cabling that the reading circuit and other auxiliary circuits in pixel unit can be designed, so that the first picture
Close to the side of third pixel unit in plain unit and the second pixel unit, certain white space is reserved, so that third pixel
The partial region of unit can be set in the white space, without influencing the reading in the first pixel unit and the second pixel unit
The function of circuit and other auxiliary circuits.
Optionally, in the application one embodiment, as shown in Figure 4 and Figure 5, lenticule and corresponding photoelectric sensor are total
Center, it should be appreciated that here be not concentrically both to limit in the same plane, but say, from top view, two
Person is that concentrically, specifically, lenticule can be the circumscribed circle of photoelectric sensor, and optical sensor can be the interior of lenticule
Connect square.
In the embodiment of the present application, lenticule can be the various camera lenses with aggregation feature.Optionally, the lenticule
Material can be organic material, such as resin.
In the embodiment of the present application, the photoelectric sensor is for converting optical signals to electric signal.In some embodiments
In, the photoelectric sensor can use complementary metal oxide semiconductor (Complementary Metal Oxide
Semiconductor, CMOS) device, the semiconductor devices being made of a PN junction, with one direction conductive characteristic.
Optionally, in the application one embodiment, the optical image acquisition unit can also include:
Wave filtering layer is set to the lenticule into the optical path between the photoelectric sensor, for filtering non-targeted wave
The optical signal of section, through the optical signal (i.e. the optical signal of wave band needed for optical image acquisition) of target wave band.
For example, can in the optical path between arbitrary medium layer plated film, formed wave filtering layer.Optionally, wave filtering layer is to target wave
Transmitance >=80% of the light of section, to cutoff rate >=80% of the light of non-targeted wave band.
Fig. 8 shows the schematic diagram of the optical image acquisition system of the application another embodiment.As shown in figure 8, optics
Image capturing system includes the array formed such as multiple optical image acquisition units of hereinbefore non-aligned arrangements.
In optical image acquisition system, a pixel of the corresponding acquisition image of each optical image acquisition unit 300, light
It learns image capturing system and acquired image is obtained by the array of multiple optical image acquisition units 300.Optionally, the light
Learning image capturing system can be set in the lower section of display screen 910.
In some embodiments, the optical image acquisition system can be living creature characteristic recognition system or camera system
Deng, for example, shield lower optical fingerprint identification system or shield lower concealed pick-up head system etc..
Optionally, as shown in figure 8, the optical image acquisition system can also include:
Filter plate 920 is set to the top for the array that multiple optical image acquisition units 300 form, for filtering
The optical signal of non-targeted wave band, through the optical signal of target wave band.
When optical image acquisition system is set to below display screen, the structure of display screen itself can to incident light into
The screening of row angle.
For example, as shown in figure 8, display screen 910 has certain aspect ratio structures, to incident light one of angle sieve of formation
Choosing, such as allows incidence angle less than 60 degree.
Optionally, in the application one embodiment, the optical image acquisition system can also include:
Angle of light screening unit 930 is set to above the array that the optical image acquisition unit 300 forms, and is used
In the light through specific incident angle range, stop the light outside the specific incident angle range.
It should be understood that in the embodiment of the present application, the optical image acquisition system can also include being used to support the light
Supporting structure of image capturing system, and corresponding processing chip etc. are learned, the embodiment of the present application does not limit this.
The embodiment of the present application also provides a kind of electronic equipment, which may include display screen and this above-mentioned Shen
Please embodiment optical image acquisition system, wherein the optical image acquisition system is set to below the display screen.
The electronic equipment can be any electronic equipment with display screen.The display screen can with reference to Fig. 1 or Fig. 2 about
Related realization mode in display screen 120, such as OLED display screen or other display screens etc., for sake of simplicity, details are not described herein.
Optionally, in the application one embodiment, the display screen can be specially self light emitting display panel (such as OLED
Display screen), and it includes multiple spontaneous light display units (such as OLED pixel or OLED light source).It is adopted in the optical imagery
When collecting system is living creature characteristic recognition system, it is special that the part spontaneous light display unit in the display screen can be used as the biology
The excitation light source that identifying system carries out living things feature recognition is levied, for emitting optical signal to the biological characteristic detection zone, with
It is detected for biological characteristic.
It should be understood that the specific example in the embodiment of the present application is intended merely to that those skilled in the art is helped to more fully understand
The embodiment of the present application, rather than limit the range of the embodiment of the present application.
It should be understood that the term used in the embodiment of the present application and the appended claims is only merely for the specific reality of description
The purpose for applying example, is not intended to be limiting the embodiment of the present application.For example, being made in the embodiment of the present application and the appended claims
The "an" of singular, " above-mentioned " and "the" are also intended to including most forms, unless context clearly shows that other
Meaning.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member can be realized with electronic hardware, computer software, or a combination of the two, can in order to clearly demonstrate hardware and software
Interchangeability generally describes each exemplary composition and step according to function in the above description.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
In several embodiments provided herein, it should be understood that disclosed system, device can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.In addition, shown or discussed phase
Mutually between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication of device or unit
Connection is also possible to electricity, mechanical or other form connections.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.Some or all of unit therein can be selected to realize the embodiment of the present application scheme according to the actual needs
Purpose.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, is also possible to two or more units and is integrated in one unit.It is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should all cover within the scope of protection of this application.Therefore, the protection scope of the application should be with right
It is required that protection scope subject to.
Claims (12)
1. a kind of optical image acquisition system characterized by comprising
Multiple optical image acquisition units, each optical image acquisition unit include photoelectric sensor and are arranged in the photoelectric transfer
Lenticule above sensor, the lenticule are used to the optical signal above the lenticule converging to the photoelectric sensing
Device；
Wherein, the multiple optical image acquisition unit includes the first adjacent two-by-two optical image acquisition unit, the second optics
Image acquisition units and third optical image acquisition unit, the first optical image acquisition unit include the first photoelectric sensing
Device, the second optical image acquisition unit include the second photoelectric sensor, and the third optical image acquisition unit includes the
Three photoelectric sensors, first photoelectric sensor, the center of second photoelectric sensor and the third photoelectric sensor
Line constitute acute triangle.
2. optical image acquisition system according to claim 1, which is characterized in that first photoelectric sensor, it is described
The line at the center of the second photoelectric sensor and the third photoelectric sensor constitutes equilateral triangle.
3. optical image acquisition system according to claim 1 or 2, which is characterized in that first optical image acquisition
Unit includes the first pixel unit, and the second optical image acquisition unit includes the second pixel unit, the third optical picture
As acquisition unit includes third pixel unit；
Wherein, the regional area of first pixel unit, second photoelectric sensing is arranged in first photoelectric sensor
The regional area of second pixel unit is arranged in device, and the third pixel unit is arranged in the third photoelectric sensor
Regional area.
4. optical image acquisition system according to claim 3, which is characterized in that first pixel unit and described
Two pixel units are adjacent but are not overlapped, the partial region of the third pixel unit respectively with first pixel unit and described
Second pixel unit partly overlaps.
5. optical image acquisition system according to claim 4, which is characterized in that by designing the first pixel list
The circuit trace in non-inductive region in first, described second pixel unit and the third pixel unit, so that the third pixel
Unit partly overlaps with first pixel unit and second pixel unit.
6. optical image acquisition system according to any one of claim 1 to 5, which is characterized in that first optics
Image acquisition units include the first lenticule, and the second optical image acquisition unit includes the second lenticule, the third light
Learning image acquisition units includes third lenticule, first lenticule, second lenticule and the third lenticule two
Spacing between two is greater than or equal to first threshold.
7. optical image acquisition system according to any one of claim 1 to 6, which is characterized in that the optical imagery
The line at the center of lenticule and the center of corresponding photoelectric sensor is perpendicular to where the photoelectric sensor in acquisition unit
Plane.
8. optical image acquisition system according to any one of claim 1 to 7, which is characterized in that the photoelectric sensing
The optical signal of device detection is used to form a pixel of acquisition image, the luminous point sensing in the multiple optical image acquisition unit
The optical signal of device detection is used to form a sub-picture.
9. optical image acquisition system according to any one of claim 1 to 8, which is characterized in that the optical imagery
Acquisition unit further include:
Wave filtering layer is set to the lenticule into the optical path between the photoelectric sensor, for filtering non-targeted wave band
Optical signal, through the optical signal of target wave band.
10. optical image acquisition system according to any one of claim 1 to 9, which is characterized in that the optical imagery
Acquisition system is living creature characteristic recognition system or camera system.
11. a kind of electronic equipment characterized by comprising display screen and
Optical image acquisition system according to any one of claim 1 to 10, wherein the optical image acquisition system
It is set to below the display screen.
12. electronic equipment according to claim 11, which is characterized in that the display screen is organic light-emitting diode display
Screen, the luminescent layer of the display screen includes multiple organic light-emitting diode light sources, wherein is in the optical image acquisition system
When living creature characteristic recognition system, the living creature characteristic recognition system is using at least partly organic light-emitting diode light source as biology
The excitation light source of feature identification.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/071825 WO2020147018A1 (en) | 2019-01-15 | 2019-01-15 | Optical image acquisition system and electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109844766A true CN109844766A (en) | 2019-06-04 |
| CN109844766B CN109844766B (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980000123.6A Active CN109844766B (en) | 2019-01-15 | 2019-01-15 | Optical image acquisition system and electronic device |
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| WO (1) | WO2020147018A1 (en) |
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| WO2020147018A1 (en) | 2020-07-23 |
| CN109844766B (en) | 2023-04-04 |
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