WO2020088129A1 - 指纹模组、电子设备以及指纹采集方法 - Google Patents

指纹模组、电子设备以及指纹采集方法 Download PDF

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Publication number
WO2020088129A1
WO2020088129A1 PCT/CN2019/105991 CN2019105991W WO2020088129A1 WO 2020088129 A1 WO2020088129 A1 WO 2020088129A1 CN 2019105991 W CN2019105991 W CN 2019105991W WO 2020088129 A1 WO2020088129 A1 WO 2020088129A1
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WO
WIPO (PCT)
Prior art keywords
screen
polarizer
light
fingerprint
fingerprint module
Prior art date
Application number
PCT/CN2019/105991
Other languages
English (en)
French (fr)
Inventor
吴安平
杨乐
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201811280520.7A external-priority patent/CN109376668B/zh
Priority claimed from CN201821777832.4U external-priority patent/CN209086953U/zh
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP19879208.7A priority Critical patent/EP3862915A4/en
Publication of WO2020088129A1 publication Critical patent/WO2020088129A1/zh
Priority to US17/243,424 priority patent/US20210248345A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/147—Details of sensors, e.g. sensor lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/30—Collimators
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state

Definitions

  • This application relates to the field of electronic technology, in particular to a fingerprint module, electronic equipment, and fingerprint collection method.
  • the principle of under-screen fingerprint collection is to use the light emitted by the screen to illuminate the finger placed on the screen.
  • the light emitted by the screen reflects when the finger reaches the finger.
  • the optical fingerprint module located below the screen receives the reflected light signal. ,
  • the light absorption range is different, and fingerprint images with different light and dark are obtained.
  • the optical fingerprint module will affect the quality of the collected fingerprint image due to some optical noise.
  • Embodiments of the present application provide a fingerprint module, an electronic device, and a fingerprint collection method for filtering optical noise to improve the quality of fingerprint images collected.
  • an embodiment of the present application provides a fingerprint module, which is applied to an electronic device.
  • the electronic device includes a screen and the fingerprint module.
  • the fingerprint module is disposed below a preset area of the screen.
  • the screen is provided with a first polarizer, the fingerprint module includes a collimating lens and an optical fingerprint sensor, the collimating lens is provided on a side of the optical fingerprint sensor close to the screen, and the collimating lens is provided There is a second polarizer, and the polarizing directions of the first polarizer and the second polarizer are the same;
  • the first polarizer and the second polarizer are used to filter the first light, and the first light is the light emitted by the screen in the first direction and reflected by the screen;
  • the second polarizer is used to filter the second light, the second light is light emitted by the screen in a second direction, and the first direction and the second direction are perpendicular to the screen, The first direction points to the outside of the electronic device, and the second direction points to the inside of the electronic device.
  • an embodiment of the present application provides an electronic device including a screen and a fingerprint module, the fingerprint module is disposed below a preset area of the screen; the screen is provided with a first polarizer, the The fingerprint module includes a collimating lens and an optical fingerprint sensor, the collimating lens is provided on a side of the optical fingerprint sensor close to the screen, the collimating lens is provided with a second polarizer, and the first polarizer The polarization direction of the second polarizer is the same;
  • the first polarizer and the second polarizer are used to filter the first light, and the first light is the light emitted by the screen in the first direction and reflected by the screen;
  • the second polarizer is used to filter the second light, the second light is light emitted by the screen in a second direction, and the first direction and the second direction are perpendicular to the screen, The first direction points to the outside of the electronic device, and the second direction points to the inside of the electronic device.
  • an embodiment of the present application provides a fingerprint collection method, which is applied to an electronic device.
  • the electronic device includes a screen and the fingerprint module, and the fingerprint module is disposed below a preset area of the screen.
  • the screen is provided with a first polarizer
  • the fingerprint module includes a collimating lens and an optical fingerprint sensor
  • the collimating lens is provided on a side of the optical fingerprint sensor close to the screen
  • the collimating lens is provided
  • There is a second polarizer and the polarizing directions of the first polarizer and the second polarizer are the same; the method includes:
  • the screen When a fingerprint collection instruction is detected, the screen is turned on and the fingerprint module is activated.
  • the light emitted by the screen in the first direction is reflected by the screen.
  • the first light reflected by the screen is separated by the first polarizer and the Filtered by a second polarizer, the second light emitted by the screen in a second direction is filtered by the second polarizer, the first direction and the second direction are both perpendicular to the screen, the first The direction points to the outside of the electronic device, and the second direction points to the inside of the electronic device;
  • a third light is collected by the fingerprint module and processed to obtain a fingerprint image.
  • the third light is light reflected by the user's fingerprint from light emitted by the screen in the first direction.
  • an embodiment of the present application provides a mobile terminal, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be processed by the above
  • the above program includes instructions for performing the steps in the method described in the third aspect of the embodiments of the present application.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the first embodiment of the present application. Part or all of the steps described in the method described in the third aspect.
  • an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium that stores the computer program, and the computer program is operable to cause the computer to execute as implemented in the present application Examples of some or all of the steps described in the method described in the third aspect.
  • the computer program product may be a software installation package.
  • the optical noise affecting the fingerprint module usually includes a first light and a second light.
  • the first light is light emitted by the screen in the first direction and reflected by the screen
  • the second light is The light emitted by the screen in the second direction, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic device, and the second direction points to the inside of the electronic device, through the first polarizer and the standard
  • the second polarizer on the straight lens filters the first light, and the second polarizer filters the second light, so that the fingerprint module is less affected by the above two types of optical noise when collecting fingerprints To further improve the quality of fingerprint images collected.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a fingerprint module provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of three collimating lenses provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a fingerprint collection method provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a fingerprint collection device provided by an embodiment of the present application.
  • Electronic devices can include various handheld devices with wireless communication capabilities, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to wireless modems, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station (MS), terminal device (terminal) and so on.
  • User Equipment User Equipment
  • MS Mobile Station
  • terminal terminal device
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a fingerprint module provided by an embodiment of the present application.
  • the fingerprint module provided in this application is applied to an electronic device, and the electronic device includes a screen and the fingerprint module, the fingerprint module is disposed below a preset area of the screen, and the screen is provided with a first polarized light
  • the fingerprint module includes a collimating lens and an optical fingerprint sensor.
  • the collimating lens is provided on a side of the optical fingerprint sensor close to the screen.
  • the collimating lens is provided with a second polarizer.
  • the polarizing directions of the first polarizer and the second polarizer are the same;
  • the first polarizer and the second polarizer are used to filter the first light, and the first light is the light emitted by the screen in the first direction and reflected by the screen;
  • the second polarizer is used to filter the second light, the second light is light emitted by the screen in a second direction, and the first direction and the second direction are perpendicular to the screen, The first direction points to the outside of the electronic device, and the second direction points to the inside of the electronic device.
  • the first direction is perpendicular to the screen and points to the outside of the electronic device, that is, the first direction is the direction upward of the vertical screen
  • the second direction is vertical to the screen, and points to the inside of the electronic device, that is, the second direction For the vertical screen downward direction.
  • the preset area may be a part of the screen or the entire screen, which is not limited herein.
  • the location of the preset area may be the middle of the screen, the upper left corner of the screen, the upper right corner of the screen, the lower left corner of the screen, etc., which is not limited herein.
  • the size of the preset area may be 5mm * 5mm, 8mm * 8mm, 1cm * 1cm, or other values.
  • the shape of the preset area may be square, rectangle, ellipse, polygon, etc., which is not limited herein.
  • the first polarizer is disposed above the display layer of the screen, and the role of the polarizer is to reduce the reflection of external light.
  • the screen includes a cover glass, a display screen and a touch screen, then the first polarizer is above the display screen.
  • the first light is the light reflected from the upper surface of the screen (that is, the outer glass of the screen, that is, the cover glass) by the light emitted by the screen in the first direction.
  • the polarizer (Polarizer) is called polarizer, which can control the polarization direction of a specific light beam.
  • the polarizer When natural light passes through the polarizer, the light whose vibration direction is perpendicular to the transmission axis of the polarizer will be absorbed, and only the polarized light whose vibration direction is parallel to the transmission axis of the polarizer is transmitted.
  • the second light is light emitted vertically downwards from the screen. After the second light passes through the second polarizer, only light with the same polarization direction as the second polarizer is allowed to pass, so After passing through the second polarizer, the second light will also be attenuated.
  • the first light is the light emitted vertically upward from the screen and reflected by the screen.
  • the first light is already the polarization direction obtained by the first polarizer and the first polarizer
  • the polarization direction of the first light will change after passing through the medium, so that after passing through the first polarizer and the second polarizer, the first light will also be attenuated. Therefore, the light passing through the polarizer is less affected, so that the fingerprint module is less affected by the above two types of optical noise when collecting fingerprints, thereby improving the quality of the collected fingerprint image.
  • the collimator lens is provided with a second polarizer, including: a second polarizer is provided on the upper surface of the collimator lens; or, a A second polarizer; or, a second polarizer is provided on the lower surface of the collimating lens.
  • a second polarizer is provided on the upper surface of the collimator lens; or, a A second polarizer; or, a second polarizer is provided on the lower surface of the collimating lens.
  • the collimator lens and the second polarizer are provided in an integrated manner, or in a stacked manner.
  • a second polarizer is provided on the upper or lower surface of the collimating lens
  • the integrated setting refers to embedding the polarizer on the upper or lower surface of the collimating lens to form a collimating lens with polarizing function
  • the upper surface or the lower surface of the straight lens is coated with a polarizing film by optical coating to form a collimating lens with a polarizing function.
  • a second polarizer is provided in the middle of the collimating lens, and the integrated setting refers to embedding the polarizer in the middle of the collimating lens to form a collimating lens with a polarizing function.
  • a second polarizer is provided on the upper surface or lower surface of the collimator lens
  • the stacked arrangement refers to a layer of polarizer is stacked on the upper surface or lower surface of the collimator lens.
  • an infrared (Infrared Radiation, IR) film is provided on the surface of the optical fingerprint sensor.
  • the IR film function is mainly to cut off infrared light, and through visible light, the IR film can be manufactured by optical coating.
  • an IR film is provided on the surface of the collimating lens.
  • a second polarizer is provided in the middle of the collimator lens, and an IR film may be provided on the upper or lower surface of the collimator lens; a second polarizer is provided on the upper surface of the collimator lens, and the second polarizer The film is arranged on the collimating lens in the form of optical coating.
  • An IR film may be provided on the lower surface of the collimating lens; a second polarizing film is provided on the upper surface of the collimating lens.
  • an IR film may be provided on the upper or lower surface of the collimator lens; a second polarizer is provided on the lower surface of the collimator lens, and the second polarizer is optically coated
  • an IR film may be provided on the upper surface of the collimator lens; a second polarizer is provided on the lower surface of the collimator lens, and the second polarizer is arranged on the collimator lens in a stack Yes, an IR film may be provided on the upper or lower surface of the collimating lens.
  • an IR film is provided on the surface of the optical fingerprint sensor or the collimating lens, which can filter out infrared light, and further improve the quality of the collected fingerprint image.
  • the screen includes a liquid crystal display (Liquid Crystal) display (LCD) screen or an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display screen.
  • LCD Liquid Crystal
  • OLED Organic Light-Emitting Diode
  • the first light and the second light are lights emitted from the preset area.
  • the first light and the second light are light of a single color
  • the single color includes a single green, a single red, or a single blue.
  • the single color when the single color is a single green, the first light and the second light are light emitted by green pixels in the preset area.
  • the single color when the single color is a single red, the first light and the second light are light emitted by red pixels in the preset area.
  • the single color is a single blue, the first light and the second light are light emitted by blue pixels in the preset area.
  • the red, green and blue pixels in the preset area are used in turn. If the green pixels in the preset area are used this time, the red pixels in the preset area next time, the blue pixels in the preset area next time, and the green pixels in the preset area next time, And so on.
  • the preset area Since the preset area is always used, it will affect the life span of the preset area. In the embodiment of the present application, red, green, and blue pixels are used in turn, thereby extending the life span of the preset area.
  • FIG. 4 is a schematic flowchart of a fingerprint collection method provided by an embodiment of the present application, which is applied to the foregoing electronic device. The method includes:
  • Step 401 When a fingerprint collection instruction is detected, the electronic device lights up the screen, activates the fingerprint module, and the light emitted by the screen in the first direction is reflected by the screen by the first light
  • the polarizer and the second polarizer filter, the second light emitted by the screen in the second direction is filtered by the second polarizer, and the first direction and the second direction are both perpendicular to the screen ,
  • the first direction points to the outside of the electronic device, and the second direction points to the inside of the electronic device;
  • Step 402 The electronic device collects a third light through the fingerprint module and obtains a fingerprint image after processing.
  • the third light is light reflected by the user's fingerprint from light emitted by the screen in the first direction.
  • the second light is light emitted vertically downwards from the screen. After the second light passes through the second polarizer, only light with the same polarization direction as the second polarizer is allowed to pass, so After passing through the second polarizer, the second light will also be attenuated.
  • the first light is the light emitted vertically upward from the screen and reflected by the screen.
  • the first light is already the polarization direction obtained by the first polarizer and the first polarizer For the same light, the polarization direction of the first light will change after passing through the medium, so that after the first polarizer and the second polarization, the first light will also be attenuated.
  • the light reflected by the user's fingerprint is consistent with the polarization direction of the polarizer Therefore, the light passing through the polarizer is less affected, so that the fingerprint module is less affected by the above two types of optical noise when collecting fingerprints, thereby improving the quality of the collected fingerprint image.
  • the electronic device lighting the screen includes: the electronic device lighting the preset area of the screen.
  • the electronic device lighting the preset area of the screen includes: the electronic device lighting the preset area to a target brightness.
  • the target brightness is a preset brightness; or the target brightness is determined by the electronic device according to the ambient light brightness of the environment in which the electronic device is currently located, for example, the ambient light is determined according to the mapping relationship between the ambient light brightness and the preset area brightness
  • the target brightness corresponding to the brightness; or the target brightness is determined by the electronic device according to the current geographic position of the electronic device, such as the target brightness corresponding to the current geographic position according to the mapping relationship between the geographic position and the brightness of the preset area; and so on.
  • the detected fingerprint collection instruction includes: when a long-press operation for the preset area is detected, or a click operation for the first area of the preset area is detected in advance, and When a long-press operation on the second area of the preset area is detected, or a tap operation on an area of the screen other than the preset area is detected first, and a target is detected later In the case of a long-press operation of the preset area, the electronic device detects a fingerprint collection instruction, and the first area is different from the second area.
  • the fingerprint collection instruction is triggered by more complicated operations to avoid user misoperation.
  • FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • the electronic device includes a screen and the fingerprint module
  • the fingerprint module is located below the preset area of the screen, the screen is provided with a first polarizer, the fingerprint module includes a collimating lens and an optical fingerprint sensor, and the collimating lens is located on the screen A side of the optical fingerprint sensor close to the screen, the collimating lens is provided with a second polarizer, and the polarizing directions of the first polarizer and the second polarizer are the same;
  • the electronic device further includes a processor, A memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for performing the following steps:
  • the screen When a fingerprint collection instruction is detected, the screen is turned on and the fingerprint module is activated.
  • the light emitted by the screen in the first direction is reflected by the screen.
  • the first light reflected by the screen is separated by the first polarizer and the Filtered by a second polarizer, the second light emitted by the screen in a second direction is filtered by the second polarizer, the first direction and the second direction are both perpendicular to the screen, the first The direction points to the outside of the electronic device, and the second direction points to the inside of the electronic device;
  • a third light is collected by the fingerprint module and processed to obtain a fingerprint image.
  • the third light is light reflected by the user's fingerprint from light emitted by the screen in the first direction.
  • the second light is light emitted vertically downwards from the screen. After the second light passes through the second polarizer, only light with the same polarization direction as the second polarizer is allowed to pass, so After passing through the second polarizer, the second light will also be attenuated.
  • the first light is the light emitted vertically upward from the screen and reflected by the screen.
  • the first light is already the polarization direction obtained by the first polarizer and the first polarizer For the same light, the polarization direction of the first light will change after passing through the medium, so that after the first polarizer and the second polarization, the first light will also be attenuated.
  • the light reflected by the user's fingerprint is consistent with the polarization direction of the polarizer Therefore, the light passing through the polarizer is less affected, so that the fingerprint module is less affected by the above two types of optical noise when collecting fingerprints, thereby improving the quality of the collected fingerprint image.
  • the above program includes instructions specifically for performing the following steps: lighting the preset area of the screen.
  • the electronic device includes a hardware structure and / or a software module corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed by hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiments of the present application may divide the functional unit of the electronic device according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the integrated unit may be implemented in the form of hardware or a software functional unit. It should be noted that the division of the units in the embodiments of the present application is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.
  • FIG. 6 is a fingerprint collection device provided by an embodiment of the present application, which is applied to the above electronic device.
  • the fingerprint collection device includes:
  • the screen control unit 601 is used to light up the screen when a fingerprint collection instruction is detected
  • the module control unit 602 is used to enable the fingerprint module, and the light emitted by the screen in the first direction is filtered by the first polarizer and the second polarizer by the first light reflected by the screen, The second light emitted by the screen in the second direction is filtered by the second polarizer, the first direction and the second direction are both perpendicular to the screen, and the first direction is directed to the electronic device Outside, the second direction points to the inside of the electronic device;
  • the image collection unit 603 is configured to collect a third light through the fingerprint module and obtain a fingerprint image after processing.
  • the third light is light reflected by the user's fingerprint from light emitted by the screen in the first direction.
  • the second light is light emitted vertically downwards from the screen. After the second light passes through the second polarizer, only light with the same polarization direction as the second polarizer is allowed to pass, so After passing through the second polarizer, the second light will also be attenuated.
  • the first light is the light emitted vertically upward from the screen and reflected by the screen.
  • the first light is already the polarization direction obtained by the first polarizer and the first polarizer For the same light, the polarization direction of the first light will change after passing through the medium, so that after the first polarizer and the second polarization, the first light will also be attenuated.
  • the light reflected by the user's fingerprint is consistent with the polarization direction of the polarizer Therefore, the light passing through the polarizer is less affected, so that the fingerprint module is less affected by the above two types of optical noise when collecting fingerprints, thereby improving the quality of the collected fingerprint image.
  • the screen control unit is specifically configured to: light the preset area of the screen.
  • screen control unit 601, module control unit 602, and image acquisition unit 603 can be implemented by a processor.
  • An embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program causes the computer to perform part or all of the steps of any method described in the foregoing method embodiments ,
  • the aforementioned computer includes electronic devices.
  • An embodiment of the present application also provides a computer program product, the computer program product includes a non-transitory computer-readable storage medium that stores the computer program, and the computer program is operable to cause the computer to perform any of the methods described in the foregoing method embodiments Some or all steps of the method.
  • the computer program product may be a software installation package, and the computer includes an electronic device.
  • the disclosed device may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the above-mentioned units is only a division of logical functions.
  • there may be other division methods for example, multiple units or components may be combined or integrated To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above integrated unit may be implemented in the form of hardware or software functional unit.
  • the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer readable memory.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or all or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a memory, Several instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the above methods in various embodiments of the present application.
  • the aforementioned memory includes: U disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.
  • the program may be stored in a computer-readable memory, and the memory may include: a flash disk , Read-Only Memory (English: Read-Only Memory, abbreviation: ROM), Random Access Device (English: Random Access Memory, abbreviation: RAM), magnetic disk or optical disk, etc.
  • ROM Read-Only Memory
  • RAM Random Access Device
  • magnetic disk or optical disk etc.

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Abstract

本申请公开了一种指纹模组，应用于包括屏幕和指纹模组的电子设备，指纹模组设于屏幕的预设区域的下方，屏幕设有第一偏光片，指纹模组包括准直透镜和光学指纹传感器，准直透镜设于光学指纹传感器靠近屏幕的一侧，准直透镜设有第二偏光片，第一偏光片和第二偏光片的偏光方向一致；第一偏光片和第二偏光片用于对第一光线进行滤光，第一光线为屏幕向第一方向发射的光线经屏幕反射的光线；第二偏光片用于对第二光线进行滤光，第二光线为屏幕向第二方向发射的光线。本申请实施例还提供了一种电子设备和指纹采集图像。采用本申请实施例可过滤光学噪声，以提升采集到的指纹图像的质量。

Description

指纹模组、电子设备以及指纹采集方法 技术领域
本申请涉及电子技术领域，尤其涉及一种指纹模组、电子设备以及指纹采集方法。
背景技术
屏下指纹采集原理是利用屏幕发出的光来照射放在屏幕上的手指，屏幕发出的光达到手指时发生反射，设置在屏幕下方的光学指纹模组接收到反射的光信号，由于指纹凹凸不平的纹路，光线吸收幅度不同，从而得到明暗不同的指纹图像。目前，光学指纹模组会因一些光学噪声而影响采集到的指纹图像的质量。
发明内容
本申请实施例提供一种指纹模组、电子设备以及指纹采集方法，用于过滤光学噪声，以提升采集到的指纹图像的质量。
第一方面，本申请实施例提供一种指纹模组，应用于电子设备，所述电子设备包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；
所述第一偏光片和所述第二偏光片用于对第一光线进行滤光，所述第一光线为所述屏幕向第一方向发射的光线经所述屏幕反射的光线；
所述第二偏光片用于对第二光线进行滤光，所述第二光线为所述屏幕向第二方向发射的光线，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部。
第二方面，本申请实施例提供一种电子设备，包括屏幕和指纹模组，所述指纹模组设于所述屏幕的预设区域的下方；所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感 器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；
所述第一偏光片和所述第二偏光片用于对第一光线进行滤光，所述第一光线为所述屏幕向第一方向发射的光线经所述屏幕反射的光线；
所述第二偏光片用于对第二光线进行滤光，所述第二光线为所述屏幕向第二方向发射的光线，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部。
第三方面，本申请实施例提供一种指纹采集方法，应用于电子设备，所述电子设备包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；所述方法包括：
在检测到指纹采集指令时，点亮所述屏幕，启用所述指纹模组，所述屏幕向第一方向发射的光线经过所述屏幕反射的第一光线被所述第一偏光片和所述第二偏光片滤光，所述屏幕向第二方向发射的第二光线被所述第二偏光片滤光，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部；
通过所述指纹模组采集第三光线，处理后得到指纹图像，所述第三光线为所述屏幕向所述第一方向发射的光线经用户指纹反射的光线。
第四方面，本申请实施例提供一种移动终端，包括处理器、存储器、通信接口以及一个或多个程序，其中，上述一个或多个程序被存储在上述存储器中，并且被配置由上述处理器执行，上述程序包括用于执行本申请实施例第三方面所述的方法中的步骤的指令。
第五方面，本申请实施例提供了一种计算机可读存储介质，其中，上述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，上述计算机程序使得计算机执行如本申请实施例第三方面所述的方法中所描述的部分或全部步骤。
第六方面，本申请实施例提供了一种计算机程序产品，其中，上述计算机 程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如本申请实施例第三方面所述的方法中所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包。
可以看出，在本申请实施例中，影响指纹模组的光学噪声通常有第一光线和第二光线，第一光线为屏幕向第一方向发射的光线经屏幕反射的光线，第二光线为屏幕向第二方向发射的光线,第一方向和第二方向均垂直屏幕，第一方向指向电子设备的外部，第二方向指向电子设备的内部，通过屏幕上设有的第一偏光片和准直透镜上设有的第二偏光片对第一光线进行滤光，通过第二偏光片对第二光线进行滤光，以使得在采集指纹时指纹模组受到上述两种光学噪声的影响减小，进而提升采集到的指纹图像的质量。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种电子设备的结构示意图；
图2是本申请实施例提供的一种指纹模组的结构示意图；
图3是本申请实施例提供的三种准直透镜的结构示意图；
图4是本申请实施例提供的一种指纹采集方法的流程示意图；
图5是本申请实施例提供的一种电子设备的结构示意图；
图6是本申请实施例提供的一种指纹采集装置的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所 有其他实施例，都应当属于本申请保护的范围。
以下分别进行详细说明。
本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
电子设备可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile Station，MS)，终端设备(terminal device)等等。
请参见图1和图2，图1是本申请实施例提供的一种电子设备的结构示意图，图2是本申请实施例提供的一种指纹模组的结构示意图。本申请提供的指纹模组应用于电子设备，所述电子设备包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；
所述第一偏光片和所述第二偏光片用于对第一光线进行滤光，所述第一光线为所述屏幕向第一方向发射的光线经所述屏幕反射的光线；
所述第二偏光片用于对第二光线进行滤光，所述第二光线为所述屏幕向第二方向发射的光线，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部。
其中，在图1的基础上，第一方向垂直屏幕，并指向电子设备的外部，即第一方向为垂直屏幕向上的方向，第二方向垂直屏幕，并指向电子设备的内部，即第二方向为垂直屏幕向下的方向。
其中，该预设区域可以是屏幕的一部分、也可以是整个屏幕，在此不作限定。在预设区域是屏幕的一部分的情况下，该预设区域所在的位置可以是屏幕的中间、屏幕的左上角、屏幕的右上角、屏幕的左下角等，在此不作限定。在预设区域是屏幕的一部分的情况下，该预设区域的大小可以是5mm*5mm、8mm*8mm、1cm*1cm或是其他值。在预设区域是屏幕的一部分的情况下，该预设区域的形状可以是正方形、长方形、椭圆形、多边形等，在此不作限定。
其中，第一偏光片设置在屏幕的显示层的上方，该偏光片的作用是减小外部光线反射。屏幕包括盖板玻璃、显示屏和触控屏，那么第一偏光片在显示屏的上方。
其中，所述第一光线为所述屏幕向第一方向发射的光线经所述屏幕的上表面(即屏幕的外侧玻璃，即盖板玻璃)反射的光线。
其中，偏光片(Polarizer)全称为偏振光片，可控制特定光束的偏振方向。自然光在通过偏光片时，振动方向与偏光片透过轴垂直的光将被吸收，透过光只剩下振动方向与偏光片透过轴平行的偏振光。
可以看出，在本申请实施例中，第二光线是屏幕垂直向下发射的光线，在第二光线经过第二偏光片后，仅允许与第二偏光片偏振方向相同的光线经过，因此在经过第二偏光片后，第二光线也会衰减，第一光线是屏幕垂直向上发射的光线经过屏幕反射回来的光线，第一光线已经是经过第一偏光片得到的偏振方向与第一偏光片相同的光线，第一光线经过介质后偏振方向会发生变化，这样经过第一偏振片和第二偏振片后，第一光线也会衰减，经用户指纹反射的光线由于与偏光片的偏光方向一致，所以经过偏光片光线影响较少，使得在采集指纹时指纹模组受到上述两种光学噪声的影响减小，进而提升采集到的指纹图像的质量。
在本申请的一实现方式中，所述准直透镜设有第二偏光片，包括：所述准直透镜的上表面设有第二偏光片；或者，所述准直透镜的中间设有第二偏光片；或者，所述准直透镜的下表面设有第二偏光片。具体如图3所示。
在本申请的一实现方式中，所述准直透镜和所述第二偏光片集成设置，或者叠层设置。
其中，在准直透镜的上表面或下表面设有第二偏光片，集成设置指的是将偏光片嵌入准直透镜的上表面或下表面，形成具有偏光功能的准直透镜，或者在准直透镜的上表面或下表面以光学镀膜的方式镀制偏光膜，形成具有偏光功能的准直透镜。
其中，在准直透镜的中间设有第二偏光片，集成设置指的是将偏光片嵌入准直透镜的中间，形成具有偏光功能的准直透镜。
其中，在准直透镜的上表面或下表面设有第二偏光片，叠层设置指的是在准直透镜的上表面或下表面叠加一层偏光片。
在本申请的一实现方式中，所述光学指纹传感器的表面设有红外(Infrared Radiation，IR)膜。IR膜功能主要是截止红外光线，透过可见光线，IR膜可以通过光学镀膜来实现制造。
在本申请的一实现方式中，所述准直透镜的表面设有IR膜。
具体有：在准直透镜的中间设有第二偏光片，可以在准直透镜的上表面或下表面设有IR膜；在准直透镜的上表面设有第二偏光片，该第二偏光片是以光学镀膜的方式设置在准直透镜上的，可以在准直透镜的下表面设有IR膜；在准直透镜的上表面设有第二偏光片，该第二偏光片是以叠层设置在准直透镜上的，可以在准直透镜的上表面或下表面设有IR膜；在准直透镜的下表面设有第二偏光片，该第二偏光片是以光学镀膜的方式设置在准直透镜上的，可以在准直透镜的上表面设有IR膜；在准直透镜的下表面设有第二偏光片，该第二偏光片是以叠层设置在准直透镜上的，可以在准直透镜的上表面或下表面设有IR膜。
可以看出，在光学指纹传感器或准直透镜的表面设有IR膜，可过滤掉红外光，进一步提升采集到的指纹图像的质量。
在本申请的一实现方式中，所述屏幕包括液晶显示(Liquid Crystal Display，LCD)屏幕或者有机发光二极管(Organic Light-Emitting Diode，OLED)显示幕。
在本申请的一实现方式中，所述第一光线和所述第二光线为所述预设区域 发出的光线。
可以看出，在采集指纹图像时，仅点亮预设区域，可降低电子设备的功耗，提升电子设备的使用时长。
在本申请的一实现方式中，所述第一光线和所述第二光线为单一颜色的光线，所述单一颜色包括单一绿色、单一红色或单一蓝色。
进一步地，在单一颜色为单一绿色时，所述第一光线和所述第二光线为所述预设区域中的绿色像素发出的光线。在单一颜色为单一红色时，所述第一光线和所述第二光线为所述预设区域中的红色像素发出的光线。在单一颜色为单一蓝色时，所述第一光线和所述第二光线为所述预设区域中的蓝色像素发出的光线。
进一步地，在采集指纹图像时，预设区域中的红绿蓝像素轮流使用。如本次使用预设区域中的绿色像素、下次使用预设区域中的红色像素、下下次使用预设区域中的蓝色像素，下下下次使用预设区域中的绿色像素，以此类推。
由于预设区域总是被使用，会影响预设区域的寿命，在本申请实施例中，轮流使用红绿蓝像素，进而延长预设区域的寿命。
请参见图4，图4是本申请实施例提供的一种指纹采集方法的流程示意图，应用于上述电子设备，方法包括：
步骤401：在检测到指纹采集指令时，电子设备点亮所述屏幕，启用所述指纹模组，所述屏幕向第一方向发射的光线经过所述屏幕反射的第一光线被所述第一偏光片和所述第二偏光片滤光，所述屏幕向第二方向发射的第二光线被所述第二偏光片滤光，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部；
步骤402：电子设备通过所述指纹模组采集第三光线，处理后得到指纹图像，所述第三光线为所述屏幕向所述第一方向发射的光线经用户指纹反射的光线。
可以看出，在本申请实施例中，第二光线是屏幕垂直向下发射的光线，在第二光线经过第二偏光片后，仅允许与第二偏光片偏振方向相同的光线经过，因此在经过第二偏光片后，第二光线也会衰减，第一光线是屏幕垂直向上发射 的光线经过屏幕反射回来的光线，第一光线已经是经过第一偏光片得到的偏振方向与第一偏光片相同的光线，第一光线经过介质后偏振方向会发生变化，这样经过第一偏振片和第二偏振偏后，第一光线也会衰减，经用户指纹反射的光线由于与偏光片的偏光方向一致，所以经过偏光片光线影响较少，使得在采集指纹时指纹模组受到上述两种光学噪声的影响减小，进而提升采集到的指纹图像的质量。
进一步地，电子设备点亮所述屏幕，包括：电子设备点亮所述屏幕的所述预设区域。
进一步地，电子设备点亮所述屏幕的所述预设区域，包括：电子设备将所述预设区域点亮至目标亮度。
其中，目标亮度是预先设定的一个亮度；或者目标亮度是电子设备根据电子设备当前所处环境的环境光亮度确定的，如根据环境光亮度与预设区域亮度的映射关系确定所述环境光亮度对应的目标亮度；或者目标亮度是电子设备根据电子设备当前地理位置确定的，如根据地理位置与预设区域亮度的映射关系确定所述当前地理位置对应的目标亮度；等等。
可以看出，在采集指纹图像时，仅调亮预设区域的亮度，可降低功耗。
进一步地，所述检测到指纹采集指令，包括：在检测到针对所述预设区域的长按操作的情况下，或者在先检测到针对所述预设区域的第一区域的点击操作，以及后检测到针对所述预设区域的第二区域的长按操作的情况下，或者，在先检测到针对所述屏幕除所述预设区域之外的区域的点击操作，以及后检测到针对所述预设区域的长按操作的情况下，电子设备检测到指纹采集指令，第一区域不同于第二区域。
可以看出，通过较复杂的操作来触发指纹采集指令，避免了用户误操作。
与上述图4所示的实施例一致的，请参阅图5，图5是本申请实施例提供的一种电子设备的结构示意图，如图所示，该电子设备包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光 片和所述第二偏光片的偏光方向一致；该电子设备还包括处理器、存储器、通信接口以及一个或多个程序，其中，上述一个或多个程序被存储在上述存储器中，并且被配置由上述处理器执行，上述程序包括用于执行以下步骤的指令：
在检测到指纹采集指令时，点亮所述屏幕，启用所述指纹模组，所述屏幕向第一方向发射的光线经过所述屏幕反射的第一光线被所述第一偏光片和所述第二偏光片滤光，所述屏幕向第二方向发射的第二光线被所述第二偏光片滤光，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部；
通过所述指纹模组采集第三光线，处理后得到指纹图像，所述第三光线为所述屏幕向所述第一方向发射的光线经用户指纹反射的光线。
可以看出，在本申请实施例中，第二光线是屏幕垂直向下发射的光线，在第二光线经过第二偏光片后，仅允许与第二偏光片偏振方向相同的光线经过，因此在经过第二偏光片后，第二光线也会衰减，第一光线是屏幕垂直向上发射的光线经过屏幕反射回来的光线，第一光线已经是经过第一偏光片得到的偏振方向与第一偏光片相同的光线，第一光线经过介质后偏振方向会发生变化，这样经过第一偏振片和第二偏振偏后，第一光线也会衰减，经用户指纹反射的光线由于与偏光片的偏光方向一致，所以经过偏光片光线影响较少，使得在采集指纹时指纹模组受到上述两种光学噪声的影响减小，进而提升采集到的指纹图像的质量。
在本申请的一实现方式中，在点亮所述屏幕方面，上述程序包括具体用于执行以下步骤的指令：点亮所述屏幕的所述预设区域。
需要说明的是，本实施例的具体实现过程可参见上述方法实施例所述的具体实现过程，在此不再叙述。
上述实施例主要从方法侧执行过程的角度对本申请实施例的方案进行了介绍。可以理解的是，电子设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬 件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据所述方法示例对电子设备进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。所述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
下面为本申请装置实施例，本申请装置实施例用于执行本申请方法实施例所实现的方法。请参阅图6，图6是本申请实施例提供的一种指纹采集装置，应用于上述电子设备，该指纹采集装置包括：
屏幕控制单元601，用于在检测到指纹采集指令时，点亮所述屏幕；
模块控制单元602，用于启用所述指纹模组，所述屏幕向第一方向发射的光线经过所述屏幕反射的第一光线被所述第一偏光片和所述第二偏光片滤光，所述屏幕向第二方向发射的第二光线被所述第二偏光片滤光，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部；
图像采集单元603，用于通过所述指纹模组采集第三光线，处理后得到指纹图像，所述第三光线为所述屏幕向所述第一方向发射的光线经用户指纹反射的光线。
可以看出，在本申请实施例中，第二光线是屏幕垂直向下发射的光线，在第二光线经过第二偏光片后，仅允许与第二偏光片偏振方向相同的光线经过，因此在经过第二偏光片后，第二光线也会衰减，第一光线是屏幕垂直向上发射的光线经过屏幕反射回来的光线，第一光线已经是经过第一偏光片得到的偏振方向与第一偏光片相同的光线，第一光线经过介质后偏振方向会发生变化，这样经过第一偏振片和第二偏振偏后，第一光线也会衰减，经用户指纹反射的光线由于与偏光片的偏光方向一致，所以经过偏光片光线影响较少，使得在采集指纹时指纹模组受到上述两种光学噪声的影响减小，进而提升采集到的指纹图像的质量。
在本申请的一实现方式中，在点亮所述屏幕方面，屏幕控制单元具体用于：点亮所述屏幕的所述预设区域。
需要说明的是，屏幕控制单元601、模块控制单元602和图像采集单元603可通过处理器实现。
本申请实施例还提供一种计算机存储介质，其中，该计算机存储介质存储用于电子数据交换的计算机程序，该计算机程序使得计算机执行如上述方法实施例中记载的任一方法的部分或全部步骤，上述计算机包括电子设备。
本申请实施例还提供一种计算机程序产品，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如上述方法实施例中记载的任一方法的部分或全部步骤。该计算机程序产品可以为一个软件安装包，上述计算机包括电子设备。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请并不受所描述的动作顺序的限制，因为依据本申请，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本申请所必须的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置，可通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如上述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性或其它的形式。
上述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
上述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储器中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储器中，包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本申请各个实施例上述方法的全部或部分步骤。而前述的存储器包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储器中，存储器可以包括：闪存盘、只读存储器(英文：Read-Only Memory，简称：ROM)、随机存取器(英文：Random Access Memory，简称：RAM)、磁盘或光盘等。
以上对本申请实施例进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种指纹模组，其特征在于，应用于电子设备，所述电子设备包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；
    所述第一偏光片和所述第二偏光片用于对第一光线进行滤光，所述第一光线为所述屏幕向第一方向发射的光线经所述屏幕反射的光线；
    所述第二偏光片用于对第二光线进行滤光，所述第二光线为所述屏幕向第二方向发射的光线，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部。
  2. 根据权利要求1所述的指纹模组，其特征在于，所述准直透镜设有第二偏光片，包括：所述准直透镜的上表面设有第二偏光片。
  3. 根据权利要求1所述的指纹模组，其特征在于，所述准直透镜设有第二偏光片，包括：所述准直透镜的中间设有第二偏光片。
  4. 根据权利要求1所述的指纹模组，其特征在于，所述准直透镜设有第二偏光片，包括：所述准直透镜的下表面设有第二偏光片。
  5. 根据权利要求1-4任一项所述的指纹模组，其特征在于，所述准直透镜和所述第二偏光片集成设置。
  6. 根据权利要求1-4任一项所述的指纹模组，其特征在于，所述准直透镜和所述第二偏光片叠层设置。
  7. 根据权利要求1-6任一项所述的指纹模组，其特征在于，所述光学指纹传感器的表面设有红外IR膜。
  8. 根据权利要求1-7任一项所述的指纹模组，其特征在于，所述准直透镜的表面设有IR膜。
  9. 根据权利要求1-8任一项所述的指纹模组，其特征在于，所述第一光线和所述第二光线为单一颜色的光线。
  10. 根据权利要求9所述的指纹模组，所述单一颜色包括单一绿色、单一 红色或单一蓝色。
  11. 根据权利要求1-10任一项所述的指纹模组，其特征在于，所述第一光线和所述第二光线为所述预设区域发出的光线。
  12. 一种电子设备，其特征在于，包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；
    所述第一偏光片和所述第二偏光片用于对第一光线进行滤光，所述第一光线为所述屏幕向第一方向发射的光线经所述屏幕反射的光线；
    所述第二偏光片用于对第二光线进行滤光，所述第二光线为所述屏幕向第二方向发射的光线，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部。
  13. 根据权利要求12所述的电子设备，其特征在于，所述屏幕包括液晶显示LCD屏幕或者有机发光二极管OLED显示幕。
  14. 根据权利要求12或13所述的电子设备，其特征在于，所述预设区域是所述屏幕的一部分，或是整个所述屏幕。
  15. 一种指纹采集方法，其特征在于，应用于电子设备，所述电子设备包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；所述方法包括：
    在检测到指纹采集指令时，点亮所述屏幕，启用所述指纹模组，所述屏幕向第一方向发射的光线经过所述屏幕反射的第一光线被所述第一偏光片和所述第二偏光片滤光，所述屏幕向第二方向发射的第二光线被所述第二偏光片滤光，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部；
    通过所述指纹模组采集第三光线，处理后得到指纹图像，所述第三光线为所述屏幕向所述第一方向发射的光线经用户指纹反射的光线。
  16. 根据权利要求15述的方法，其特征在于，所述点亮所述屏幕，包括：点亮所述屏幕的所述预设区域。
  17. 一种指纹采集装置，其特征在于，应用于电子设备，所述电子设备包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；
    屏幕控制单元，用于在检测到指纹采集指令时，点亮所述屏幕；
    模块控制单元，用于启用所述指纹模组，所述屏幕向第一方向发射的光线经过所述屏幕反射的第一光线被所述第一偏光片和所述第二偏光片滤光，所述屏幕向第二方向发射的第二光线被所述第二偏光片滤光，所述第一方向和所述第二方向均垂直所述屏幕，所述第一方向指向所述电子设备的外部，所述第二方向指向所述电子设备的内部；
    图像采集单元，用于通过所述指纹模组采集第三光线，处理后得到指纹图像，所述第三光线为所述屏幕向所述第一方向发射的光线经用户指纹反射的光线。
  18. 根据权利要求17所述的装置，其特征在于，在点亮所述屏幕方面，所述屏幕控制单元具体用于：点亮所述屏幕的所述预设区域。
  19. 一种电子设备，其特征在于，所述电子设备包括屏幕和所述指纹模组，所述指纹模组设于所述屏幕的预设区域的下方，所述屏幕设有第一偏光片，所述指纹模组包括准直透镜和光学指纹传感器，所述准直透镜设于所述光学指纹传感器靠近所述屏幕的一侧，所述准直透镜设有第二偏光片，所述第一偏光片和所述第二偏光片的偏光方向一致；所述电子设备还包括处理器、存储器、通信接口，以及一个或多个程序，所述一个或多个程序被存储在所述存储器中，并且被配置由所述处理器执行，所述程序包括用于执行如权利要求15或16所述的方法中的步骤的指令。
  20. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，其中，所述计算机程序被处理执行如权利要求15或16所述的方法。
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