CN111563484B

CN111563484B - Optical image acquisition device, electronic equipment and method thereof

Info

Publication number: CN111563484B
Application number: CN202010582772.6A
Authority: CN
Inventors: 李华飞
Original assignee: Shenzhen Goodix Technology Co Ltd
Current assignee: Shenzhen Goodix Technology Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-11-17
Anticipated expiration: 2040-06-23
Also published as: CN111563484A

Abstract

The embodiment of the application provides an optical image acquisition device, electronic equipment and a method thereof. Optical image acquisition device, comprising: the light guide structure is positioned above the photoelectric sensing unit array; the light guide structure comprises a light blocking layer, the light blocking layer comprises at least two first light guide holes and at least one second light guide hole, and the inner diameter of each first light guide hole is larger than that of each second light guide hole; the photoelectric sensing unit array is used for receiving optical signals passing through the first light guide hole and the second light guide hole so as to respectively obtain a first photoelectric sensing signal and a second photoelectric sensing signal, and the first photoelectric sensing signal and the second photoelectric sensing signal are used for obtaining highlight configuration of the photoelectric sensing unit array. The photoelectric sensing signals acquired by the photoelectric sensing unit array under the configuration of the strong light cannot be distorted, the accuracy of acquiring image data is improved, and accurate biological feature recognition can be realized according to the image data.

Description

Optical image acquisition device, electronic equipment and method thereof

Technical Field

The embodiment of the application relates to the technical field of electronics, in particular to an optical image acquisition device, electronic equipment and a method thereof.

Background

With the advancement of technology and the gradual increase of user requirements, the functions of electronic devices are increasing, wherein a biometric function is particularly emphasized by people, and the biometric function refers to a function of identifying the identity of a user according to the biometric features of the user, such as fingerprints and palmprints.

In order to acquire the biological characteristics of the user, an optical image acquisition device may be provided in the electronic device, and the optical image acquisition device receives an optical signal reflected by a specific part of the user, such as a finger or a palm, and acquires a photoelectric sensing signal according to the received optical signal, so as to obtain image data of the specific part of the user through the photoelectric sensing signal for user biological characteristic identification. However, in some cases, for example, in a case where the ambient light is strong, the light signal illumination intensity received by the optical image capturing device is high, which causes distortion of the photoelectric sensing signal acquired by the optical image capturing device, reduces the accuracy of acquiring the image data according to the photoelectric sensing signal, and cannot realize accurate biometric feature recognition.

Disclosure of Invention

In view of the above, embodiments of the present application provide an optical image capturing device, an electronic apparatus and a method thereof, so as to overcome the defects in the prior art.

A first aspect of embodiments of the present application provides an optical image acquisition apparatus, including: the light guide structure is positioned above the photoelectric sensing unit array; the light guide structure comprises a light blocking layer, the light blocking layer comprises at least two first light guide holes and at least one second light guide hole, and the inner diameter of each first light guide hole is larger than that of each second light guide hole; the photoelectric sensing unit array is used for receiving optical signals passing through the first light guide hole and the second light guide hole so as to respectively obtain a first photoelectric sensing signal and a second photoelectric sensing signal, and the first photoelectric sensing signal and the second photoelectric sensing signal are used for obtaining highlight configuration of the photoelectric sensing unit array.

A second aspect of embodiments of the present application provides an electronic device, where the electronic device includes a processor and any one of the optical image capturing devices provided in the first aspect of embodiments of the present application, the processor receives an image captured by the optical image capturing device and performs biometric matching on the image, and the processor performs highlight configuration on the photoelectric sensing unit array of the optical image capturing device.

A third aspect of embodiments of the present application provides an optical image acquisition method, the method comprising: receiving the light signals passing through the first light guide hole and the second light guide hole through a photoelectric sensing unit array of the optical image acquisition device to respectively obtain a first photoelectric sensing signal and a second photoelectric sensing signal, wherein the inner diameter of the first light guide hole is larger than that of the second light guide hole; performing strong light configuration on the photoelectric sensing unit array according to the first photoelectric sensing signal and the second photoelectric sensing signal; under the configuration of strong light, the photoelectric sensing unit array receives the light signals passing through the first light guide hole and the second light guide hole to respectively acquire a third photoelectric sensing signal and a fourth photoelectric sensing signal.

In the optical image acquisition device that the embodiment of this application provided, light-blocking layer of light-guiding structure includes two at least first leaded light holes and at least one second leaded light hole, the internal diameter of first leaded light hole is greater than the internal diameter of second leaded light hole, when the light signal that illumination intensity is the same shines on optical image acquisition device, the light signal through second leaded light hole is less than the light signal through first leaded light hole, the signal value of the second photoelectric sensing signal that the photoelectric sensing unit array obtained according to the light signal through second leaded light hole is less than the signal value of the first photoelectric sensing signal that the photoelectric sensing unit array obtained according to the light signal through first leaded light hole. Therefore, if the first photoelectric sensing signal is distorted under the irradiation of strong light, the second photoelectric sensing signal is not distorted, the strong light configuration of the photoelectric sensing unit array can be obtained through the first photoelectric sensing signal and the second photoelectric sensing signal, the photoelectric sensing signal obtained by the photoelectric sensing unit array under the strong light configuration is not distorted, and the accuracy of obtaining image data according to the photoelectric sensing signal is improved.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural diagram of an optical image capturing device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of an optical image capturing device provided in an embodiment of the present application;

FIG. 3 is a schematic top view of a light blocking layer provided by embodiments of the present application;

FIG. 4 is a schematic top view of a light blocking layer provided by embodiments of the present application;

FIG. 5 is a schematic top view of a light blocking layer provided by embodiments of the present application;

fig. 6 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

FIG. 7 is a schematic flow chart diagram of an optical image acquisition method provided by an embodiment of the present application;

FIG. 8 is a schematic flow chart diagram of an optical image acquisition method provided by an embodiment of the present application;

fig. 9 is a schematic flowchart of an optical image acquisition method according to an embodiment of the present application.

Detailed Description

It is not necessary for any particular embodiment of the invention to achieve all of the above advantages at the same time.

In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application shall fall within the scope of the protection of the embodiments in the present application.

With the advancement of technology and the gradual increase of user requirements, a biometric function, which is a function of identifying the identity of a user according to the biometric features of the user, such as fingerprints and palm prints, is gaining attention.

In order to acquire the biological features of the user, an optical image acquisition device may be disposed in the electronic device, and an optical signal reflected by a specific part of the user, such as a finger or a palm, is received by the optical image acquisition device, and a photoelectric sensing signal is acquired according to the received optical signal, so that a processor in the electronic device obtains image data of the specific part of the user (e.g., fingerprint data of the finger of the user) through the photoelectric sensing signal to perform user biological feature identification.

The optical image acquisition device can comprise a light guide structure and a photoelectric sensing unit array, wherein the photoelectric sensing unit array comprises a plurality of photoelectric sensing units (also called as optical sensing pixels, photosensitive pixels, pixel units and the like), the light guide structure is positioned above the photoelectric sensing unit array and comprises a light blocking layer, and the light blocking layer forms a plurality of holes.

In practical use, when some conditions (for example, a condition that ambient light is strong) occur, the light signal illumination intensity received by the optical image acquisition device is too high, which may cause saturation of the photoelectric conversion circuit, the analog circuit, and the like of the photoelectric sensing unit array of the optical image acquisition device, and the signal value of the photoelectric sensing signal acquired by the optical image acquisition device does not increase with the increase of the light signal illumination intensity received by the optical image acquisition device, and at this time, the photoelectric sensing signal acquired by the optical image acquisition device is distorted.

In view of this, embodiments of the present disclosure provide an optical image capturing device, an electronic apparatus, an optical image capturing method, and a biometric identification method, so as to overcome a technical defect that when an illumination intensity of an optical signal received by the optical image capturing device is too high in the prior art, an obtained photoelectric sensing signal is prone to distortion.

The following further describes specific implementations of embodiments of the present application with reference to the drawings of the embodiments of the present application.

Example one

Fig. 1 is a schematic structural view of an optical image capturing device according to an embodiment of the present disclosure, as shown in fig. 1, an optical image capturing device 100 includes a light guide structure 101 and a photoelectric sensing unit array 102, the light guide structure 101 is located above the photoelectric sensing unit array 102, the light guide structure 101 includes a light blocking layer 111, the light blocking layer 111 includes at least two first light guide holes 121 and at least one second light guide hole 131, and an inner diameter of the first light guide hole 121 is greater than an inner diameter of the second light guide hole 131. The photo sensor cell array 102 is configured to receive the light signals passing through the first light guide hole 121 and the second light guide hole 131 to obtain a first photo sensing signal and a second photo sensing signal, respectively, where the first photo sensing signal and the second photo sensing signal are used to obtain a strong light configuration of the photo sensor cell array.

Specifically, the light blocking layer 111 may be made of a non-light-transmissive material (e.g., a metal, etc.), and the light blocking layer 111 may be fabricated on the photo sensing unit array 102 by using a semiconductor manufacturing process (e.g., the light blocking layer may be a top metal layer in the optical image capturing device 100).

For example, the first light guide hole 121 and the second light guide hole 131 may be circular.

The inner diameter range of the first light guide hole 121 may be 2.0um to 3.0 um.

The inner diameter range of the second light guide hole 131 may be 0.6um to 1.8 um.

Illustratively, the inner diameter of the first light guide hole 121 may be 2.5 um, and the inner diameter of the second light guide hole 131 may be 1.0 um.

It should be noted that, in the embodiment of the present application, the specific value of the inner diameter of the first light guide hole 121 and the specific value of the inner diameter of the second light guide hole 131 are not limited, and those skilled in the art can determine the specific value of the inner diameter of the first light guide hole 121 and the specific value of the inner diameter of the second light guide hole 131 according to the actual situation, for example, the actual situation of the light path.

The Photo sensor cell array 102 may include a plurality of Photo sensor cells (also referred to as Photo sensor pixels, pixel cells, etc.) 112, and the Photo sensor cells 112 are specifically Photo detectors (Photo detectors).

It should be noted that the photo sensor cell array 102 may further include an auxiliary circuit (e.g., an analog amplifying circuit, a reading circuit, etc.) electrically connected to the plurality of photo sensor cells.

Illustratively, taking the optical image capturing device 100 as an example for capturing a fingerprint, the optical image capturing device 100 receives an optical signal reflected by a surface of a finger, the fingerprint of the surface of the finger includes a ridge (ridge) and a valley (valley), and the ridge and the valley have different reflection abilities for the optical signal, so that the optical signal reflected by the ridge of the fingerprint and the optical signal reflected by the valley of the fingerprint have different illumination intensities, and the optical image capturing device 100 generates a photo-induced signal with different signal values according to the received optical signal with different illumination intensities. The light signal of finger surface reflection passes through first light guide hole 121 and second light guide hole 131, is received by photoelectric sensing unit array 102 among the image acquisition device and carries out photoelectric conversion to obtain the photoelectric sensing signal, according to this photoelectric sensing signal alright obtain the image data on finger surface, fingerprint data promptly, can further carry out fingerprint matching according to fingerprint data and verify, thereby realize the optics fingerprint collection function at electronic equipment.

Optionally, in an embodiment of the present application, the processor or other component with processing function of the optical image capturing apparatus 100 may obtain the highlight configuration of the photo-sensing unit array 102 according to the first photo-sensing signal and the second photo-sensing signal. Other devices or systems may also receive the first photo-sensing signal and the second photo-sensing signal obtained by the photo-sensing unit array 102, and obtain the bright light configuration of the photo-sensing unit array 102 according to the first photo-sensing signal and the second photo-sensing signal.

Optionally, in an embodiment of the present application, the configuration parameters of the highlight configuration may include at least one of exposure time and operational amplification of the analog circuit.

Specifically, shorten exposure time and can reduce the light quantity of the light through first leaded light hole and second leaded light hole to reduce the signal value of first photoelectric sensing signal and second photoelectric sensing signal, avoid first photoelectric sensing signal or second photoelectric sensing signal because of the too high distortion of illumination intensity of light. The signal value of the first photoelectric sensing signal or the second photoelectric sensing signal can be reduced by reducing the operational amplification factor of the analog circuit, and the signal value of the first photoelectric sensing signal or the second photoelectric sensing signal is prevented from reaching the maximum photoelectric sensing threshold value, namely, the first photoelectric sensing signal or the second photoelectric sensing signal is prevented from being distorted.

In the optical image capturing device 100 provided in the embodiment of the present application, the light blocking layer 111 of the light guiding structure 101 includes at least two first light guiding holes 121 and at least one second light guiding hole 131, an inner diameter of the first light guiding hole 121 is greater than an inner diameter of the second light guiding hole 131, when light signals with the same illumination intensity are irradiated on the optical image capturing device 100, light signals passing through the second light guiding hole 131 are less than light signals passing through the first light guiding hole 121, and a signal value of a second photoelectric sensing signal obtained by the photoelectric sensing unit array 102 according to the light signals passing through the second light guiding hole 131 is less than a signal value of a first photoelectric sensing signal obtained by the photoelectric sensing unit array 102 according to the light signals passing through the first light guiding hole 121. Therefore, if the first photoelectric sensing signal is distorted under the irradiation of strong light, the second photoelectric sensing signal is not distorted, the strong light configuration of the photoelectric sensing unit array 102 can be obtained through the first photoelectric sensing signal and the second photoelectric sensing signal, the photoelectric sensing signal obtained by the photoelectric sensing unit array 102 under the strong light configuration is not distorted, and the accuracy of obtaining image data according to the photoelectric sensing signal is improved.

Optionally, in an embodiment of the present application, as shown in fig. 2, which is a schematic structural diagram of an optical image capturing device provided in the embodiment of the present application, the light guide structure 101 may further include a Micro-Lens (Micro-Lens) array 143 disposed above the light blocking layer 111, the Micro-Lens array 143 includes a first Micro-Lens 1431 and a second Micro-Lens 1432, the first Micro-Lens 1431 is disposed above the first light guide hole 121 and corresponds to the first light guide hole 121, and the second Micro-Lens 1432 is disposed above the second light guide hole 131 and corresponds to the second light guide hole 131. The first microlens 1431 is used to condense the optical signal so that the optical signal passes through the first light guide hole 121, and the second microlens 1432 is used to condense the optical signal so that the optical signal passes through the second light guide hole 131.

Optionally, in an embodiment of the present application, the number of the first light guide holes 121 is greater than the number of the second light guide holes 131.

When image data is acquired according to the photo sensing signals acquired by the photo sensing unit array 102, even when the first light guide hole 121 and the second light guide hole 131 are both over the same pattern (e.g., both ridges of a fingerprint), the signal value of the second photo sensing signal is smaller than that of the first photo sensing signal, and accurate image data cannot be acquired according to the second photo sensing signal. In order to improve the accuracy of the acquired image data, in the optical image capturing device 100 provided in the embodiment of the present application, the number of the first light guide holes 121 is greater than the number of the second light guide holes 131, and the first photoelectric sensing signal accounts for more of all the photoelectric sensing signals, so that the accuracy of the acquired image data is improved.

Alternatively, when image data is acquired according to the photo sensing signals acquired by the photo sensing unit array 102, even when the same pattern (e.g., ridges of a fingerprint) is formed above both the first light guide hole 121 and the second light guide hole 131, the signal value of the second photo sensing signal is smaller than that of the first photo sensing signal, and accurate image data cannot be acquired according to the second photo sensing signal. In order to improve the accuracy of the acquired image data, the second photo sensing signal may be removed from all the photo sensing signals acquired by the photo sensing unit array 102, and the filling algorithm is used to fill all the photo sensing signals from which the second photo sensing signal is removed, so as to acquire the image data according to the filled photo sensing signals.

For example, the filling algorithm is used to fill all the photoelectric sensing signals from which the second photoelectric sensing signals are removed, and the filling algorithm may be used to fill all the photoelectric sensing signals from which the second photoelectric sensing signals are removed according to the first photoelectric sensing signals corresponding to the at least one first light guiding hole 121, in order to determine the at least one first light guiding hole 121 adjacent to the second light guiding hole 131. For example, the photoelectric sensing signals corresponding to the at least one first light guiding hole 121 may be averaged, and all the photoelectric sensing signals with the second photoelectric sensing signal removed may be filled according to the averaged photoelectric sensing signals. It should be understood that the embodiment of the present application is not particularly limited to the implementation manner of filling all the photo sensing signals with the filling algorithm to remove the second photo sensing signals, and any manner that can implement the above filling may be included in the scope of the embodiment of the present application.

Optionally, in an embodiment of the present application, as shown in fig. 3, fig. 3 is a schematic top view of a light blocking layer 111 provided in the embodiment of the present application, and the first light guide hole 121 and the second light guide hole 131 are disposed in a region 141 corresponding to an effective photosensitive area of the photo sensor unit array 102.

Specifically, the first light guide hole 121 may correspond to a first photoelectric sensing unit located below the first light guide hole 121, the second light guide hole 131 may correspond to a second photoelectric sensing unit located below the second light guide hole 131, and the first photoelectric sensing unit and the second photoelectric sensing unit are both located in the effective photosensitive area.

An Active Area (AA) of the photo sensor unit Array 102 is an area that can be used for image capture in the photo sensor unit Array 102. Alternatively, the effective photosensitive area may be an area where the photo sensing unit 112 for image capture is disposed in the photo sensing unit array 102, or may also be understood as an area where an active photo sensing unit (also referred to as an active pixel) is disposed in the photo sensing unit array 102. Illustratively, the region 141 corresponding to the effective photosensitive area of the photo-sensing unit array 102 may be understood as a region of the light blocking layer 111 above the effective photosensitive area.

The area of the effective photosensitive area is smaller than or equal to the area of the photo-sensing unit array 102. The shape of the effective photosensitive region may be rectangular, circular, oval or other shapes, and the shape of the effective photosensitive region and the region 141 corresponding to the effective photosensitive region are illustrated as rectangular in the embodiments of the present application, which should not be construed as limiting the present application.

By arranging the first light guide hole 121 and the second light guide hole 131 in the region 141 corresponding to the effective photosensitive area of the photoelectric sensing unit array 102, the photoelectric sensing unit array 102 can perform photoelectric conversion according to light passing through the first light guide hole 121 and the second light guide hole 131 to acquire a photoelectric sensing signal, so that image data for biological characteristic detection can be acquired according to the photoelectric sensing signal, and the optical image acquisition device can acquire the image data.

Optionally, in an embodiment of the present application, as shown in fig. 3, the first light guide hole 121 and the second light guide hole 131 are disposed in a region 141 corresponding to an effective photosensitive area of the photoelectric sensing unit array 102, and the second light guide hole 131 is arranged along an outer edge of the region 141 corresponding to the effective photosensitive area.

Specifically, the outer edge of the area corresponding to the effective photosensitive area may be an area corresponding to one row or one line of photoelectric sensing units on the outermost side of the effective photosensitive area, or an area corresponding to two rows or two columns of photoelectric sensing units on the outermost side of the effective photosensitive area, or an area corresponding to three rows or three columns of photoelectric sensing units on the outermost side of the effective photosensitive area.

When image data is acquired according to the photo sensing signals acquired by the photo sensing unit array 102, even when the first light guide hole 121 and the second light guide hole 131 are both over the same pattern (e.g., both ridges of a fingerprint), the signal value of the second photo sensing signal is smaller than that of the first photo sensing signal, and accurate image data cannot be acquired according to the second photo sensing signal. The second light guide holes 131 are arranged along the outer side edges of the regions 141 corresponding to the effective photosensitive areas, so that the first light guide holes 121 are arranged in the central regions of the regions 141 corresponding to the effective photosensitive areas, image data corresponding to the central regions of the effective photosensitive areas can be acquired according to the first photoelectric sensing signals, and the accuracy of the image data corresponding to the central regions of the effective photosensitive areas is improved.

Optionally, in an embodiment of the present application, as shown in fig. 3, the first light guide hole 121 and the second light guide hole 131 are disposed in a region 141 corresponding to an effective photosensitive area of the photoelectric sensing unit array 102, the second light guide hole 131 is arranged along an outer edge of the region 141 corresponding to the effective photosensitive area, and the second light guide hole 131 and the first light guide hole 121 are arranged at an interval.

Exemplarily, the second light guide holes 131 and the first light guide holes 121 arranged along the outer edge of the region 141 corresponding to the effective photosensitive area are arranged at intervals, the first photoelectric sensing signal and the second photoelectric sensing signal can be respectively obtained through the first light guide holes 121 and the second light guide holes 131 arranged at intervals, and the image data corresponding to the edge position of the effective photosensitive area can be obtained according to the obtained first photoelectric sensing signal and the obtained second photoelectric sensing signal.

Optionally, in an embodiment of the present application, as shown in fig. 4, fig. 4 is a schematic top view of the light blocking layer 111 provided in the embodiment of the present application, and the second light guide hole 131 is disposed in a region 251 corresponding to a dark current photo sensing unit of the photo sensing unit array 102.

Specifically, the first light guide hole 121 corresponds to a first photoelectric sensing unit located below the first light guide hole 121, the second light guide hole 131 corresponds to a second photoelectric sensing unit located below the second light guide hole 131, the first photoelectric sensing unit is located in an effective photosensitive area of the photoelectric sensing unit array 102, and the second photoelectric sensing unit is located in an area corresponding to the dark current photoelectric sensing unit.

Dark current refers to the reverse current generated by the photodiode under reverse bias conditions in a dark environment. The photo sensor cell array 102 includes dark current photo sensor cells (also referred to as dark pixels), wherein the photo sensor signals output by the dark current photo sensor cells reflect dark current characteristics of the photo sensor cells in the photo sensor cell array 102 when not being irradiated by light.

It should be noted that the dark current photoelectric sensing unit in the photoelectric sensing unit array 102 may be disposed adjacent to the effective photosensitive area of the photoelectric sensing unit array 102, or may not be adjacent to the effective photosensitive area of the photoelectric sensing unit array 102, which is not limited in this embodiment of the present application. For convenience of understanding, the embodiment of the present application is described by taking an example in which the dark current photo sensing units are disposed around the effective photosensitive area of the photo sensing unit array 102, and on the contrary, the area 251 corresponding to the dark current photo sensing units of the photo sensing unit array 102 is disposed around the area 141 corresponding to the effective photosensitive area.

When image data is acquired according to the photo sensing signals acquired by the photo sensing unit array 102, even when the first light guide hole 121 and the second light guide hole 131 are both over the same pattern (e.g., both ridges of a fingerprint), the signal value of the second photo sensing signal is smaller than that of the first photo sensing signal, and accurate image data cannot be acquired according to the second photo sensing signal. By disposing the second light guiding hole 131 in the region 251 corresponding to the dark current photoelectric sensing unit of the photoelectric sensing unit array 102, the second photoelectric sensing unit does not acquire the photoelectric sensing signal corresponding to the effective photosensitive area of the photoelectric sensing unit array 102, but the first photoelectric sensing unit corresponding to the first light guiding hole 121 acquires the first photoelectric sensing signal corresponding to the effective photosensitive area of the photoelectric sensing unit array 102, thereby improving the accuracy of the acquired image data corresponding to the effective photosensitive area of the photoelectric sensing unit array 102.

Optionally, in an embodiment of the present application, as shown in fig. 5, which is a schematic top view of the light blocking layer 111 provided in the embodiment of the present application, the second light guide hole 131 is disposed in a region 251 corresponding to a dark current photoelectric sensing unit of the photoelectric sensing unit array 102, and the second light guide hole 131 is arranged along an outer edge of the region 251 corresponding to the dark current photoelectric sensing unit.

Specifically, the outer edge of the region 251 corresponding to the dark current photoelectric sensing unit may be a region corresponding to one or two rows of dark current photoelectric sensing units on the outermost side, or a region corresponding to three or three rows of dark current photoelectric sensing units on the outermost side.

Through making second leaded light hole 131 arrange along the outside border of the region 251 that dark current photoelectric sensing unit corresponds, can make second leaded light hole 131 not occupy the region 251 that dark current photoelectric sensing unit corresponds and be close to the part of central authorities, avoid the light signal through second leaded light hole 131 to be received by a plurality of dark current photoelectric sensing units, reduce second leaded light hole 131 and carry out the influence that dark current detected to dark current photoelectric sensing unit.

Optionally, in an embodiment of the present application, as shown in fig. 5, the second light guide holes 131 are disposed in the region 251 corresponding to the dark current photoelectric sensing units of the photoelectric sensing unit array 102, the second light guide holes 131 are arranged along the outer edge of the region 251 corresponding to the dark current photoelectric sensing units, and the second light guide holes 131 are uniformly arranged.

If the second light guide holes 131 are not uniformly arranged, when there is a certain difference in the illumination intensity of the light signals irradiated on different areas of the optical image capturing device, the second photoelectric sensing signal can only reflect the illumination intensity of the light signals irradiated on a part of the areas of the optical image capturing device. Through making second leaded light hole 131 evenly arrange, can make second photoelectric sensing signal can reflect the illumination intensity of shining the light signal on whole optical image collection device.

Optionally, in an embodiment of the present application, the optical image capturing device further includes a processor (processor), and the processor is configured to obtain the highlight configuration of the photo sensor unit array according to the first photo sensing signal and the second photo sensing signal.

In particular, the processor may be a central processing unit CPU, or a Specific Integrated circuit asic (application Specific Integrated circuit), or one or more Integrated circuits configured to implement embodiments of the present invention.

Example two

Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and as shown in fig. 6, the electronic device 200 includes a processor 201 and an optical image capturing device 202, where the optical image capturing device 202 may be any one of the optical image capturing devices according to the first embodiment of the present application.

The processor 201 receives the image collected by the optical image collecting device 202 and performs biometric matching on the image, and the processor 201 performs strong light configuration on the photoelectric sensing unit array of the optical image collecting device 202.

In particular, the processor 201 may be a central processing unit CPU, or a specific integrated circuit ASIC, or one or more integrated circuits configured to implement an embodiment of the present invention.

It should be noted that the electronic device according to the embodiment of the present application exists in various forms, including but not limited to:

(1) a mobile communication device: such devices are characterized by mobile communications capabilities and are primarily targeted at providing voice, data communications. Such terminals include: smart phones (e.g., iphones), multimedia phones, functional phones, and low-end phones, among others.

(2) Ultra mobile personal computer device: the equipment belongs to the category of personal computers, has calculation and processing functions and generally has the characteristic of mobile internet access. Such terminals include: PDA, MID, and UMPC devices, etc., such as ipads.

(3) A portable entertainment device: such devices can display and play multimedia content. This type of device comprises: audio, video players (e.g., ipods), handheld game consoles, electronic books, and smart toys and portable car navigation devices.

(4) And other electronic equipment with data interaction function.

Specifically, the photoelectric sensing unit array of the optical image capturing device receives the light signals passing through the first light guide hole and the second light guide hole to obtain a first photoelectric sensing signal and a second photoelectric sensing signal, respectively, wherein the inner diameter of the first light guide hole is larger than the inner diameter of the second light guide hole, and the first photoelectric sensing signal and the second photoelectric sensing signal are used for obtaining the highlight configuration of the photoelectric sensing unit array.

In the electronic device provided by the embodiment of the application, the photoelectric sensing unit array of the optical image acquisition device 202 is subjected to highlight configuration through the processor 201, when the light illumination intensity irradiated on the optical image acquisition device 202 is high, the photoelectric sensing unit array under the highlight configuration acquires photoelectric sensing signals, so that the acquired photoelectric sensing signals are not distorted, the accuracy of acquiring image data according to the photoelectric sensing signals is improved, and the success rate of biological feature matching according to the image data is high.

Optionally, in an embodiment of the present application, the processor 201 performs a highlight configuration on the optical image capturing device 202, including: if the processor 201 fails to perform the biometric matching according to the first and second photoelectric sensing signals, the photoelectric sensing unit array is configured with a highlight.

Illustratively, in performing the biometric matching, the optical image capturing device 202 captures first frame data through the photo sensor cell array, and acquires image data according to a first photo sensor signal and a second photo sensor signal acquired when the first frame data is captured, so as to perform the biometric matching according to the image data. If the processor 201 fails to perform the biometric matching according to the first photoelectric sensing signal and the second photoelectric sensing signal, the first photoelectric sensing signal may be distorted due to too high illumination intensity of light passing through the first light guide hole when the first frame data is collected by the photoelectric sensing unit array, and the biometric matching may fail due to a lower accuracy of image data acquired according to the first photoelectric sensing signal and the second photoelectric sensing signal. Under the condition, the processor 201 obtains the highlight configuration of the photoelectric sensing unit array of the optical image acquisition device according to the first photoelectric sensing signal and the second photoelectric sensing signal, and obtains the photoelectric sensing signals such as the third photoelectric sensing signal and the fourth photoelectric sensing signal through the photoelectric sensing unit array under the highlight configuration, the obtained photoelectric sensing signals obtained by the photoelectric sensing unit array under the highlight configuration are not distorted, the accuracy of image data obtained according to the obtained photoelectric sensing signals is high, and the success rate of biological feature matching according to the image data is improved.

Optionally, in an embodiment of the present application, the performing a highlight configuration on the array of photoelectric sensing units includes: if the first photoelectric sensing signal reaches the maximum photoelectric sensing threshold value, calculating to obtain a theoretical value of the first photoelectric sensing signal according to a preset light flux ratio of the first light guide hole and the second photoelectric sensing signal; obtaining a gain value of the first photoelectric sensing signal according to a theoretical value of the first photoelectric sensing signal; and obtaining configuration parameters for configuring the strong light of the photoelectric sensing unit array according to the gain value.

Specifically, when the first photoelectric sensing signal reaches the maximum photoelectric sensing threshold, the light signal illumination intensity received by the optical image acquisition device is too high, the photoelectric sensing unit corresponding to the first light guide hole in the photoelectric sensing unit array or the analog circuit in the photoelectric sensing unit array is saturated, the first photoelectric sensing signal cannot truly reflect the light signal illumination intensity passing through the first light guide hole, and the first photoelectric sensing signal is distorted. Illustratively, the resolution of the analog-to-digital converter in the photo sensor unit array is 12bit, the maximum signal value of the signal output by the analog-to-digital converter is 4096, and when the illumination intensity of the optical signal passing through the first light guide hole is too high, the signal value of the first photo sensor signal output by the analog-to-digital converter is 4096, that is, the signal value of the first photo sensor signal is the maximum value of the photo sensor signal, and the first photo sensor signal is distorted.

The preset light flux ratio of the first light guide hole and the second light guide hole can be obtained in advance and stored in the electronic equipment, and the processor can read the preset light flux ratio. The preset light flux ratio of the first light guide hole and the second light guide hole can be understood as follows: when the light intensity of the light passing through the first light guide hole is the same as that of the light passing through the second light guide hole, the ratio of the light quantity of the light passing through the first light guide hole to the light quantity of the light passing through the second light guide hole in unit time is determined, wherein the first photoelectric sensing signal is in direct proportion to the light quantity of the light passing through the first light guide hole, and the second photoelectric sensing signal is in direct proportion to the light quantity of the light passing through the second light guide hole. Because the illumination intensity of the light passing through the first light guide hole is the same as the illumination intensity of the light passing through the second light guide hole, the preset light flux ratio of the first light guide hole and the second light guide hole is the same as the ratio of the signal value of the first photoelectric sensing signal to the signal value of the second photoelectric sensing signal when the first photoelectric sensing signal and the second photoelectric sensing signal are not distorted.

The theoretical value of the first photoelectric sensing signal can be understood as: and assuming that the photoelectric sensing unit array does not generate distortion, the photoelectric sensing unit array acquires a signal value of a first photoelectric sensing signal according to the light passing through the first light guide hole.

The gain value of the first photoelectric sensing signal is obtained according to the theoretical value of the first photoelectric sensing signal, and may be calculated according to the theoretical value of the first photoelectric sensing signal through a preset algorithm to obtain the gain value of the first photoelectric sensing signal, or may be searched in a database obtained in advance according to the theoretical value of the first photoelectric sensing signal to obtain the gain value of the first photoelectric sensing signal. In this embodiment, a specific implementation manner of obtaining the gain value of the first photo-sensing signal according to the theoretical value of the first photo-sensing signal is not limited.

The configuration parameters of the corresponding strong light configuration are obtained according to the gain value, the configuration parameters of the corresponding strong light configuration can be obtained by calculating according to the gain value through a preset algorithm, and the configuration parameters of the corresponding strong light configuration can also be obtained by searching in a pre-obtained database according to the gain value. In this embodiment, a specific implementation manner of obtaining the configuration parameter of the corresponding highlight configuration according to the gain value is not limited.

The configuration parameters include at least one of exposure time and operational amplification factor of the analog circuit.

Specifically, shortening the exposure time can reduce the light quantity of the light passing through the first light guide hole and the second light guide hole, reduce the signal values of the first photoelectric sensing signal and the second photoelectric sensing signal, and avoid the distortion of the first photoelectric sensing signal or the second photoelectric sensing signal due to the overhigh illumination intensity of the light.

The signal value of the first photoelectric sensing signal or the second photoelectric sensing signal can be reduced by reducing the operational amplification factor of the analog circuit, and the signal value of the first photoelectric sensing signal or the second photoelectric sensing signal is prevented from reaching the maximum photoelectric sensing threshold value, namely, the first photoelectric sensing signal or the second photoelectric sensing signal is prevented from being distorted.

Illustratively, the photo sensor cell array may include an analog-to-digital converter for performing analog-to-digital conversion to output the photo sensor signal, and the resolution of the analog-to-digital converter is 12 bits, i.e. the maximum signal value of the output signal of the analog-to-digital converter is 4096. When the optical image acquisition device acquires first frame data, if the illumination intensity of the optical signal passing through the first light guide hole is too high, the signal value of the first photoelectric sensing signal output by the analog-digital converter is 4096, and the first photoelectric sensing signal reaches the maximum photoelectric sensing threshold value. The preset light flux ratio of the first light guide hole and the second light guide hole stored in the electronic device in advance is obtained, the preset light flux ratio is 10:1, namely when the illumination intensity of the light passing through the first light guide hole is the same as the illumination intensity of the light passing through the first light guide hole, the signal value of the first photoelectric sensing signal is 10 times that of the second photoelectric sensing signal, the signal value of the second photoelectric sensing signal is 500, and the theoretical value of the first photoelectric sensing signal is 5000. The optimal empirical value of the first photo-sensing signal, i.e. the signal value without distortion, is 3000, and the gain value gain2 of the first photo-sensing signal can be obtained through gain2 = gain1 × 3000/5000, and if the gain1 is 1, the gain2 is 0.6, wherein the gain1 is the gain value when the optical image capturing device captures the first frame data. According to the gain value gain2, the configuration parameters of the photo sensor cell array corresponding to the gain value gain2 for highlight configuration can be obtained by searching in a configuration parameter database stored in the electronic device in advance.

When the first photoelectric sensing signal reaches the maximum photoelectric sensing threshold value, a theoretical value of the first photoelectric sensing signal is obtained through calculation according to a preset light flux ratio of the first light guide hole and the second photoelectric sensing signal, a gain value of the first photoelectric sensing signal is obtained according to the theoretical value of the first photoelectric sensing signal, configuration parameters of the photoelectric sensing unit array for strong light configuration are obtained according to the gain value, strong light configuration can be conveniently carried out on the photoelectric sensing unit array according to the configuration parameters, and the third photoelectric sensing signal and the fourth photoelectric sensing signal which are obtained by the photoelectric sensing unit array under the strong light configuration cannot be distorted.

Optionally, in an embodiment of the present application, the processor receiving and biometric-matching the image acquired by the optical image acquisition device includes: the processor receives a third photoelectric sensing signal and a fourth photoelectric sensing signal, and performs biological characteristic matching on the third photoelectric sensing signal and the fourth photoelectric sensing signal, wherein the third photoelectric sensing signal is acquired according to a light signal received by the photoelectric sensing unit array through the first light guide hole under the strong light configuration, and the fourth photoelectric sensing signal is acquired according to a light signal received by the photoelectric sensing unit array through the second light guide hole under the strong light configuration.

Specifically, the processor receives the third photoelectric sensing signal and the fourth photoelectric sensing signal and performs biological characteristic matching on the third photoelectric sensing signal and the fourth photoelectric sensing signal, so that the processor can acquire biological characteristic data with high accuracy according to the undistorted third photoelectric sensing signal and the fourth photoelectric sensing signal and perform biological characteristic matching according to the biological characteristic data with high accuracy, and the success rate of biological characteristic matching is improved.

EXAMPLE III

Fig. 7 is a schematic flowchart of an optical image capturing method provided in an embodiment of the present application, where the optical image capturing method is applied to any one of the optical image capturing devices provided in the first embodiment, as shown in fig. 7, and the optical image capturing method includes the following steps:

s301, receiving the light signals passing through the first light guide hole and the second light guide hole through the photoelectric sensing unit array of the optical image acquisition device to respectively obtain a first photoelectric sensing signal and a second photoelectric sensing signal, wherein the inner diameter of the first light guide hole is larger than that of the second light guide hole.

Specifically, the photoelectric sensing unit array of the optical image capturing device receives the light signals passing through the first light guide hole and the second light guide hole when capturing the first frame data to obtain a first photoelectric sensing signal and a second photoelectric sensing signal, respectively, wherein an inner diameter of the first light guide hole is larger than an inner diameter of the second light guide hole, and the first photoelectric sensing signal and the second photoelectric sensing signal are used for obtaining a highlight configuration of the photoelectric sensing unit array.

S302, performing strong light configuration on the photoelectric sensing unit array according to the first photoelectric sensing signal and the second photoelectric sensing signal.

Specifically, the optical image acquisition device may send information including a first photoelectric sensing signal and a second photoelectric sensing signal to a processor of the electronic device where the optical image acquisition device is located, the processor of the electronic device may obtain configuration parameters of the highlight configuration of the photoelectric sensing unit array according to the first photoelectric sensing signal and the second photoelectric sensing signal, and the optical image acquisition device may receive the information including the configuration parameters of the highlight configuration sent by the processor, and adjust the configuration parameters of the photoelectric sensing unit array according to the configuration parameters of the highlight configuration, that is, perform the highlight configuration on the highlight sensing unit array.

When the optical image capturing device includes a processor or other components with processing functions, the processor or other components with processing functions of the optical image capturing device may also obtain configuration parameters of the hard light configuration of the photo-electric sensing unit array according to the first photo-electric sensing signal and the second photo-electric sensing signal, so as to adjust the configuration parameters of the photo-electric sensing unit array according to the configuration parameters of the hard light configuration, that is, perform the hard light configuration on the photo-electric sensing unit array.

And S303, under the configuration of strong light, receiving the light signals passing through the first light guide hole and the second light guide hole through the photoelectric sensing unit array to respectively obtain a third photoelectric sensing signal and a fourth photoelectric sensing signal.

Specifically, the photoelectric sensing unit array of the optical image acquisition device can acquire second frame data under the configuration of strong light, and receive light signals passing through the first light guide hole and the second light guide hole when the photoelectric sensing unit array acquires the second frame data so as to respectively acquire a third photoelectric sensing signal and a fourth photoelectric sensing signal.

In the optical image capturing method provided in the embodiment of the application, the photoelectric sensing unit array of the optical image capturing device receives the light signals passing through the first light guide hole and the second light guide hole to respectively obtain a first photoelectric sensing signal and a second photoelectric sensing signal, the photoelectric sensing unit array is subjected to highlight configuration according to the first photoelectric sensing signal and the second photoelectric sensing signal, and the photoelectric sensing unit array receives the light signals passing through the first light guide hole and the second light guide hole to respectively obtain a third photoelectric sensing signal and a fourth photoelectric sensing signal under the highlight configuration. If the first photoelectric sensing signal is distorted under the irradiation of strong light, the second photoelectric sensing signal is not distorted, and the photoelectric sensing signal acquired by the photoelectric sensing unit array is not distorted by configuring the photoelectric sensing unit array with the strong light according to the first photoelectric sensing signal and the second photoelectric sensing signal, so that the accuracy of acquiring image data according to the photoelectric sensing signal is improved.

Optionally, in an embodiment of the present application, as shown in fig. 8, fig. 8 is a schematic flowchart of an optical image capturing method provided in an embodiment of the present application, where the optical image capturing method includes the following steps:

S304, if the biological feature matching according to the first photoelectric sensing signal and the second photoelectric sensing signal fails, performing strong light configuration on the photoelectric sensing unit array.

For example, the optical image capturing device may capture first frame data by the photo sensor cell array when performing biometric matching, and capture image data according to the first photo sensor signal and the second photo sensor signal obtained when capturing the first frame data, so as to perform biometric matching according to the image data. If the optical image acquisition device itself or the electronic device where the optical image acquisition device is located fails to perform the matching of the biological characteristics according to the first photoelectric sensing signal and the second photoelectric sensing signal, the first photoelectric sensing signal may be distorted due to the excessively high illumination intensity of the light passing through the first light guide hole when the first frame data is acquired by the photoelectric sensing unit array, and the biological characteristic matching may fail due to the relatively low accuracy of the image data acquired according to the first photoelectric sensing signal and the second photoelectric sensing signal. Under the condition, the photoelectric sensing unit array is subjected to strong light configuration according to the first photoelectric sensing signal and the second photoelectric sensing signal, second frame data are collected through the photoelectric sensing unit array under the strong light configuration, a third photoelectric sensing signal and a fourth photoelectric sensing signal which are obtained when the second frame data are collected cannot be distorted, the accuracy of image data obtained according to the third photoelectric sensing signal and the fourth photoelectric sensing signal is high, and the success rate of biological feature matching according to the image data is improved.

Specifically, the configuring the photoelectric sensing unit array with strong light may include: if the first photoelectric sensing signal reaches the maximum photoelectric sensing threshold value, calculating to obtain a theoretical value of the first photoelectric sensing signal according to a preset light flux ratio of the first light guide hole and the second photoelectric sensing signal; obtaining a gain value of the first photoelectric sensing signal according to a theoretical value of the first photoelectric sensing signal; and obtaining configuration parameters for configuring the strong light of the photoelectric sensing unit array according to the gain value.

The configuration parameters may include at least one of exposure time and operational amplification factor of the analog circuit.

The exposure time is shortened, the light quantity of light passing through the first light guide hole and the second light guide hole can be reduced, the signal values of the first photoelectric sensing signal and the second photoelectric sensing signal are reduced, and the distortion of the first photoelectric sensing signal or the second photoelectric sensing signal due to the overhigh illumination intensity of the light is avoided. The signal value of the first photoelectric sensing signal or the second photoelectric sensing signal can be reduced by reducing the operational amplification factor of the analog circuit, and the signal value of the first photoelectric sensing signal or the second photoelectric sensing signal is prevented from reaching the maximum photoelectric sensing threshold value, namely, the first photoelectric sensing signal or the second photoelectric sensing signal is prevented from being distorted.

Optionally, in an embodiment of the present application, as shown in fig. 9, fig. 9 is a schematic flowchart of an optical image capturing method provided in an embodiment of the present application, where the optical image capturing method includes the following steps:

S305, performing biological characteristic matching according to the third photoelectric sensing signal and the fourth photoelectric sensing signal.

The third photoelectric sensing signal is acquired by the light signal received by the first light guide hole under the strong light configuration according to the photoelectric sensing unit array, and the fourth photoelectric sensing signal is acquired by the light signal received by the second light guide hole under the strong light configuration according to the photoelectric sensing unit array.

Specifically, the biometric data with higher accuracy can be obtained by performing biometric matching according to the undistorted third photoelectric sensing signal and the fourth photoelectric sensing signal, and the success rate of biometric matching can be improved by performing biometric matching according to the biometric data with higher accuracy.

Thus, particular embodiments of the present subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may be advantageous.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An optical image capturing device for placement below a display screen of an electronic device, comprising: the light guide structure is positioned above the photoelectric sensing unit array;

the light guide structure comprises a light blocking layer, the light blocking layer comprises at least two first light guide holes and at least one second light guide hole, and the inner diameter of each first light guide hole is larger than that of each second light guide hole;

the photoelectric sensing unit array is used for receiving optical signals passing through the first light guide hole and the second light guide hole to respectively acquire a first photoelectric sensing signal and a second photoelectric sensing signal, and the first photoelectric sensing signal and the second photoelectric sensing signal are used for acquiring a strong light configuration of the photoelectric sensing unit array; if the first photoelectric sensing signal reaches a maximum photoelectric sensing threshold value, calculating to obtain a theoretical value of the first photoelectric sensing signal according to a preset light flux ratio of the first light guide hole and the second photoelectric sensing signal; obtaining a gain value of the first photoelectric sensing signal according to a theoretical value of the first photoelectric sensing signal; and obtaining configuration parameters for performing strong light configuration on the photoelectric sensing unit array according to the gain value.

2. The optical image capturing device as claimed in claim 1, wherein the light guide structure further includes a micro lens array disposed above the light blocking layer, the micro lens array includes a first micro lens disposed above and corresponding to the first light guide hole and a second micro lens disposed above and corresponding to the second light guide hole.

3. The optical image capturing device as claimed in claim 1, wherein the inner diameter of the first light guide hole is in a range of 2.0um to 3.0 um;

and/or, the range of the internal diameter of second leaded light hole is 0.6um-1.8 um.

4. The optical image capturing device as claimed in claim 1, wherein the number of the first light guide holes is greater than the number of the second light guide holes.

5. The optical image capturing device of claim 1, wherein the light blocking layer is a top metal layer of the optical image capturing device.

6. The optical image capturing device as claimed in claim 1, wherein the first light guide hole and the second light guide hole are disposed on the light blocking layer in a region corresponding to an effective photosensitive area of the array of photoelectric sensing units.

7. The optical image capturing device as claimed in claim 6, wherein the first light guiding hole corresponds to a first photo-electric sensing unit located under the first light guiding hole, the second light guiding hole corresponds to a second photo-electric sensing unit located under the second light guiding hole, and both the first photo-electric sensing unit and the second photo-electric sensing unit are located in the effective photosensitive area.

8. The optical image capturing device as claimed in claim 6, wherein the second light guiding holes are arranged along an outer edge of the corresponding region of the effective photosensitive area.

9. The optical image capturing device as claimed in claim 8, wherein the outer edge of the corresponding region of the effective photosensitive area is a region corresponding to one row or one column of the photoelectric sensing units at the outermost side of the effective photosensitive area.

10. The optical image capturing device as claimed in claim 8, wherein the second light guide hole is spaced apart from the first light guide hole.

11. The optical image capturing device as claimed in claim 1, wherein the second light guiding hole is disposed on the light blocking layer in a region corresponding to the dark current photo sensing unit of the photo sensing unit array.

12. The optical image capturing device as claimed in claim 11, wherein the first light guiding hole corresponds to a first photo-electric sensing unit located under the first light guiding hole, the second light guiding hole corresponds to a second photo-electric sensing unit located under the second light guiding hole, the first photo-electric sensing unit is located in an effective photo-sensing area of the photo-electric sensing unit array, and the second photo-electric sensing unit is located in an area corresponding to the dark current photo-electric sensing unit.

13. The optical image capturing device as claimed in claim 11, wherein the second light guiding hole is disposed along an outer edge of the region corresponding to the dark current photo-electric sensing unit.

14. The optical image capturing device as claimed in claim 11, wherein the second light guiding holes are uniformly arranged.

15. The optical image capturing device according to any of claims 1 to 14, further comprising a processor for obtaining a glare light configuration of the photo sensor unit array according to the first photo sensor signal and the second photo sensor signal.

16. An electronic device, comprising a processor and the optical image capturing device of any one of claims 1-14, wherein the processor receives and biometrically matches images captured by the optical image capturing device, and wherein the processor performs highlight configuration on the array of photo-sensing units of the optical image capturing device; the strong light configuration of the photoelectric sensing unit array comprises: if the first photoelectric sensing signal reaches a maximum photoelectric sensing threshold value, calculating to obtain a theoretical value of the first photoelectric sensing signal according to a preset light flux ratio of the first light guide hole and the second photoelectric sensing signal; obtaining a gain value of the first photoelectric sensing signal according to a theoretical value of the first photoelectric sensing signal; and obtaining configuration parameters for performing strong light configuration on the photoelectric sensing unit array according to the gain value.

17. The electronic device of claim 16, wherein the processor performs highlight configuration on the photo sensor unit array of the optical image capturing device, and comprises:

and if the processor fails to perform biological characteristic matching according to the first photoelectric sensing signal and the second photoelectric sensing signal, performing strong light configuration on the photoelectric sensing unit array.

18. The electronic device of claim 16, wherein the configuration parameters comprise: at least one of exposure time and operational amplification factor of the analog circuit.

19. The electronic device of claim 16, wherein the processor receiving and biometric matching the image captured by the optical image capture device comprises:

the processor receives a third photoelectric sensing signal and a fourth photoelectric sensing signal and performs biological characteristic matching on the third photoelectric sensing signal and the fourth photoelectric sensing signal, the third photoelectric sensing signal is acquired according to the light signals received by the photoelectric sensing unit array through the first light guide hole under the high light configuration, and the fourth photoelectric sensing signal is acquired according to the light signals received by the photoelectric sensing unit array through the second light guide hole under the high light configuration.

20. An optical image acquisition method, characterized in that the method comprises:

receiving optical signals passing through a first light guide hole and a second light guide hole through a photoelectric sensing unit array of an optical image acquisition device to respectively acquire a first photoelectric sensing signal and a second photoelectric sensing signal, wherein the inner diameter of the first light guide hole is larger than that of the second light guide hole;

performing strong light configuration on the photoelectric sensing unit array according to the first photoelectric sensing signal and the second photoelectric sensing signal;

under the high-light configuration, receiving the light signals passing through the first light guide hole and the second light guide hole through the photoelectric sensing unit array to respectively obtain a third photoelectric sensing signal and a fourth photoelectric sensing signal;

the strong light configuration of the photoelectric sensing unit array comprises: if the first photoelectric sensing signal reaches a maximum photoelectric sensing threshold value, calculating to obtain a theoretical value of the first photoelectric sensing signal according to a preset light flux ratio of the first light guide hole and the second photoelectric sensing signal; obtaining a gain value of the first photoelectric sensing signal according to a theoretical value of the first photoelectric sensing signal; and obtaining configuration parameters for performing strong light configuration on the photoelectric sensing unit array according to the gain value.

21. The method according to claim 20, wherein said performing a highlight configuration on said photo sensor cell array according to said first photo sensing signal and said second photo sensing signal further comprises:

and if the biological characteristic matching according to the first photoelectric sensing signal and the second photoelectric sensing signal fails, performing strong light configuration on the photoelectric sensing unit array.

22. The method according to claim 20, wherein the configuration parameters for performing the intense light configuration on the photo-sensing unit array comprise: at least one of exposure time and operational amplification factor of the analog circuit.

23. The optical image acquisition method of claim 20, further comprising: and performing biological feature matching according to the third photoelectric sensing signal and the fourth photoelectric sensing signal.