WO2019213861A1 - 一种光源模组、图像获取装置、身份识别装置及电子设备 - Google Patents

一种光源模组、图像获取装置、身份识别装置及电子设备 Download PDF

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Publication number
WO2019213861A1
WO2019213861A1 PCT/CN2018/086148 CN2018086148W WO2019213861A1 WO 2019213861 A1 WO2019213861 A1 WO 2019213861A1 CN 2018086148 W CN2018086148 W CN 2018086148W WO 2019213861 A1 WO2019213861 A1 WO 2019213861A1
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Prior art keywords
light source
light
source module
infrared laser
laser beam
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PCT/CN2018/086148
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English (en)
French (fr)
Inventor
王小明
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深圳阜时科技有限公司
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Application filed by 深圳阜时科技有限公司 filed Critical 深圳阜时科技有限公司
Priority to PCT/CN2018/086148 priority Critical patent/WO2019213861A1/zh
Priority to CN201880000787.8A priority patent/CN108713203A/zh
Publication of WO2019213861A1 publication Critical patent/WO2019213861A1/zh

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    • 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
    • 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

Definitions

  • the present application belongs to the field of optical technologies, and in particular, to a light source module, an image acquisition device, an identification device, and an electronic device using the same.
  • Structural light refers to light having a specific morphology that can be designed as a stripe pattern, a regular lattice pattern, a mesh morphology, a speckle pattern, a coded morphology, etc., or even a more complex form of light.
  • the application range of structured light is more and more extensive, such as face recognition, projector, 3D contour reproduction, distance measurement, anti-counterfeiting identification. Therefore, how to provide a light source module capable of emitting structured light has become the focus of research.
  • a surface light source when outputting light in the form of stripes or the like, a surface light source is required, but now a laser is generally used as a light source for structured light, and the light-emitting area of the laser is generally small. If a laser having a large light-emitting area is expensive, it will be large. Increase production costs.
  • the technical problem to be solved by the present application is to provide a light source module, an image acquisition device, an identification device, and an electronic device, which are intended to effectively reduce production costs.
  • a light source module includes a laser, a beam former, and a mirror.
  • the laser is used to emit an infrared laser beam.
  • the mirror is configured to reflect the infrared laser beam to extend the optical path of the infrared laser beam, increase the transmission distance of the infrared laser beam, and increase the area of the surface light source formed by the infrared laser beam reflected by the mirror. Big.
  • the beamformer is configured to receive an infrared laser beam reflected by the mirror and modulate the received infrared laser beam to form patterned structured light.
  • the light source module further includes a hollow package.
  • the laser, the beam former and the mirror are both housed in the package.
  • the package includes a light exit portion.
  • the light exiting portion is disposed corresponding to the light beam former such that structured light formed by the light beam former can be emitted from the light exiting portion.
  • the light emitting surface of the laser is perpendicular to the light exiting surface of the light exit portion.
  • the mirror is located below the beam former and is located on one side of the light exit surface of the laser.
  • the angle of inclination of the mirror relative to the light emitting face of the laser ranges from [30, 60] degrees.
  • the angle of inclination of the mirror relative to the light emitting face of the laser ranges from 45 degrees.
  • the light exit portion is transparent or translucent.
  • the package further includes an accommodating cavity and a receiving groove, and the laser and the mirror are received in the accommodating cavity, and the beam former is received in the accommodating groove .
  • the laser and the mirror are respectively disposed at opposite ends of the accommodating cavity in the longitudinal direction to further increase the transmission distance of the infrared laser beam.
  • the light source module further includes a collimating optical element.
  • the collimating optical element is located on an optical path between the mirror and the beam former for calibrating the infrared laser beam reflected by the mirror to form a parallel beam; the parallel beam is modulated into the beam former The patterned structured light.
  • the collimating optical element is a microlens array or a Fresnel lens.
  • the beamformer comprises a diffractive optical element.
  • the present application also provides an image acquisition device including a sensing module and the above-described light source module.
  • the light source module is configured to emit patterned structured light and project the structured light onto a target.
  • the sensing module is configured to acquire an image of structured light reflected by the target.
  • the image acquisition device further includes a processor for deriving a 3D map of the object based on the image acquired by the sensing module.
  • the present application also provides an identification device including a sensing module, an identification module, and the above-described light source module.
  • the light source module is configured to emit patterned structured light and project the structured light to an object to be tested.
  • the sensing module is configured to acquire an image of structured light reflected by the object to be tested.
  • the identification module is configured to perform identity recognition according to an image acquired by the image acquisition device.
  • the identification device comprises a face recognition device.
  • the present application also provides an electronic device, comprising the identity recognition device according to any one of the above, wherein the electronic device is configured to correspond to whether to perform a corresponding function according to the recognition result of the identity recognition device.
  • the respective function includes unlocking, paying, launching any one or more of the pre-stored applications.
  • the light source module uses the divergence angle of the infrared laser beam emitted by the laser to extend the optical path of the non-collimated infrared laser beam by means of mirror reflection.
  • the transmission distance of the non-collimated infrared laser beam is increased, so that the area of the surface light source formed by the non-collimated infrared laser beam is increased, thereby converting the infrared laser beam emitted by the laser having a small light-emitting area into a larger
  • the area of the surface light source therefore, does not require the use of expensive lasers with a large light-emitting area, effectively reducing production costs.
  • FIG. 1 is a schematic structural diagram of a light source module according to a first embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an image acquiring apparatus according to a second embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of an identity recognition apparatus according to a third embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present application.
  • a light source module 100 includes a hollow package 10 and a laser 20 , a mirror 30 , and a beam former housed in the package 10 . 40.
  • the package body 10 includes a receiving cavity 11 , a receiving groove 12 and a light exiting portion 13 .
  • the accommodating groove 12 communicates with the accommodating cavity 11 .
  • the light exiting portion 13 is disposed on a side of the accommodating groove 12 away from the accommodating cavity 11 .
  • the light exiting portion 13 is configured to receive and allow structured light formed by the beam former 40 to exit the package 10.
  • the light exit portion 13 is, for example, transparent or translucent.
  • the package body 10 is substantially rectangular parallelepiped, and the package body 10 is divided into a first portion and a second portion by a cross section parallel to the bottom surface and the top surface of the package body 10.
  • the receiving cavity 11 is a space inside the first portion
  • the accommodating groove 12 is a space inside the one end of the second portion in the longitudinal direction of the package body
  • portions of the second portion other than the accommodating groove 12 are, for example, For a solid structure.
  • the laser 20 is disposed in the accommodating cavity 11 for emitting an infrared laser beam.
  • the infrared laser beam has, for example, a certain divergence angle and is non-collimated.
  • a side-emitting infrared laser is used, and the light-emitting surface 21 of the laser 20 is perpendicular to the light-emitting surface of the light-emitting portion 13.
  • the laser 20 can be an edge emitting laser (Vertical Emitter Laser), a Vertical Cavity Surface Emitting Laser (VCSEL) or other type of laser.
  • VCSEL Vertical Cavity Surface Emitting Laser
  • the laser 20 can also be a light source for front side illumination.
  • the laser 20 is assembled into the accommodating cavity 11, the laser 20 is placed sideways, and the light emitting surface 21 is perpendicular to the light exit portion 13 . The light side.
  • the mirror 30 is disposed in the accommodating cavity 11 and located on the optical path of the infrared laser beam emitted by the laser 20 for receiving the infrared laser beam emitted by the laser 20, and receiving the infrared laser beam Reflection is performed to extend the optical path of the infrared laser beam, and the transmission distance of the infrared laser beam is increased, so that the area of the surface light source formed by the infrared laser beam reflected by the mirror 30 is increased.
  • the angle of inclination of the mirror 30 with respect to the light-emitting surface 21 of the laser 20 is, for example, [30, 60] degrees. Accordingly, the inclination angle of the mirror 30 with respect to the light-emitting surface 21 of the laser 20 is, for example, any one of [30, 60] degrees. In the present embodiment, the inclination angle is preferably 45 degrees.
  • the laser 20 and the mirror 30 are respectively disposed at opposite ends of the accommodating cavity 11 in the longitudinal direction to effectively utilize the accommodating cavity 11
  • the space further increases the distance between the mirror 30 and the laser 20, and extends the optical path of the infrared laser beam, thereby further increasing the area of the surface light source formed by the infrared beam.
  • the beam former 40 is disposed in the accommodating groove 12 and is disposed corresponding to the light exit portion 13 .
  • the beam former 40 is located on the optical path of the mirror 30 for receiving the infrared laser beam reflected by the mirror 30 and modulating the received infrared laser beam to form patterned structured light.
  • the beam former 40 is, for example, substantially rectangular parallelepiped, and includes a transparent substrate and a phase band diffraction structure formed on the transparent substrate.
  • the infrared laser beam processed by the diffraction of the beam former 40 can be projected onto any suitable plane or space to form a laser dot pattern having a pattern. By changing the phase band diffraction structure, the pattern of the infrared laser beam processed by the beam former 40 can be changed.
  • the beam former 40 includes, for example but not limited to, a Diffractive Optical Element (DOE). However, in other embodiments, the beam former 40 can be other suitable types of devices to enable the formation of patterned structured light.
  • the patterned structured light is, for example, striped, dot matrix, mesh format, coded, or the like.
  • the working process of the light source module 100 is: the laser 20 emits an infrared laser beam and reaches the mirror 30, and is reflected by the mirror 30 to increase the transmission distance of the infrared laser beam, so that the infrared laser beam is formed.
  • the area of the surface light source is increased; the beam former 40 receives the surface light source, and modulates the infrared laser beam in the received surface light source to form patterned structured light, and finally the structured light is emitted through the light exit portion 13. .
  • a collimating optical element such as a microlens array or a Fresnel lens
  • the reflected non-collimated infrared laser beam is calibrated to form parallel light to obtain a surface light source having a uniform intensity distribution.
  • the surface light source having a uniform intensity distribution is modulated by the beam former 40, and structured light having a uniform intensity distribution can be obtained, and the conversion efficiency and pattern accuracy of the structured light can be improved.
  • the working process of the light source module 100 is: the non-collimated infrared laser beam emitted by the laser 20 is reflected by the mirror 30 to form a large surface light source; the surface light source is non-standard A straight infrared laser beam enters the collimating optical element to be aligned to form a collimated infrared laser beam, and then the collimated infrared laser beam enters the beam former 40 to be modulated into structured light, and finally the structured light is emitted from the light exit portion 13. .
  • the second embodiment of the present application provides an image acquisition device 200, which includes a sensing module 201 and a light source module 100 as described above.
  • the light source module 100 is configured to emit patterned structured light and project the structured light onto a target.
  • the sensing module 201 is configured to acquire an image of structured light reflected by the target.
  • the image obtaining apparatus 200 further includes a processor 203, configured to derive a 3D map of the target according to the image acquired by the sensing module 201.
  • the third embodiment of the present application provides an identity recognition device 300, which includes a sensing module 301, an identification module 302, and the above-described light source module 100.
  • the light source module 100 is configured to emit patterned structured light and project the structured light to an object to be tested.
  • the sensing module 301 is configured to acquire an image of structured light reflected by the object to be tested.
  • the identification module 302 is configured to perform identity recognition according to an image obtained by the sensing module 301.
  • the identification device 300 is, for example, a face recognition device. However, the identification device 300 can also be used to identify other suitable locations of the human body, even to identify other organisms or non-living organisms.
  • the fourth embodiment of the present application provides an electronic device 400, such as but not limited to a suitable type of consumer electronic products, home electronic products, vehicle-mounted electronic products, financial terminal products, and the like.
  • Electronic products such as but not limited to mobile phones, tablets, notebook computers, desktop monitors, computer integrated machines.
  • Home-based electronic products such as, but not limited to, smart door locks, televisions, refrigerators, wearable devices, and the like.
  • Vehicle-mounted electronic products such as, but not limited to, car navigation systems, car DVDs, and the like.
  • the financial terminal products are, for example, but not limited to ATM machines, terminals for self-service business, and the like.
  • the electronic device 400 includes the above-described identity recognition device 300.
  • the electronic device 400 corresponds to whether to perform a corresponding function according to the identity recognition result of the identity authentication device 300.
  • the respective functions are, for example but not limited to, any one or more of an application including unlocking, paying, and starting a pre-stored application.
  • the electronic device 400 will be described as an example of a mobile phone.
  • the mobile phone is, for example, a full screen mobile phone, and the identification device 300 is disposed, for example, at the front top of the mobile phone.
  • the mobile phone is not limited to a full screen mobile phone.
  • the screen of lifting up the mobile phone or touching the mobile phone can function to wake up the identity recognition device 300.
  • the identity recognition device 300 is woken up and recognizes that the user in front of the mobile phone is a legitimate user, the screen is unlocked.
  • the light source module 100, the image acquisition device 100, the identification device 300, and the electronic device 400 of the present application reflect the divergence angle of the infrared laser beam emitted by the laser 20 through the mirror 30.
  • the beam is converted into a large-area surface light source, and it is not necessary to use an expensive laser having a large light-emitting area, thereby effectively reducing the production cost.
  • the mirror 30 bends the optical path of the infrared laser beam, the volume of the light source module 100 can be effectively reduced.

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Abstract

一种光源模组（100）以及一种使用光源模组的图像获取装置（200）、身份识别装置（300）及电子设备（400）。光源模组（100）包括激光器（20）、光束形成器（40）及反射镜（30）。该激光器（20）用于发射非准直的红外激光束。反射镜（30）将红外激光束进行反射，以延长红外激光束的光路，增大红外激光束的传递距离，使得被该反射镜反射的红外激光束所形成的面光源的面积增大。光束形成器（40）接收反射镜（30）所反射的红外激光束，并将所接收的红外激光束进行调制，形成图案化的结构光。将发光面积较小的激光器（20）所发射的红外激光束转换成较大面积的面光源，从而有效降低生产成本。

Description

一种光源模组、图像获取装置、身份识别装置及电子设备 技术领域
本申请属于光学技术领域，尤其涉及一种光源模组及使用该光源模组的图像获取装置、身份识别装置、及电子设备。
背景技术
“结构光(structure light)”是指具有特定形态的光，其可被设计成条纹形态、规则点阵形态、网格形态、散斑形态、编码形态等，甚至更复杂形态的光形。随着光学技术的蓬勃发展，结构光的应用范围越来越广泛，比如脸部识别、投影仪、3D轮廓重现、距离测量、防伪辨识等。因此如何提供一种能够发射结构光的光源模组成为人们研究的重点。例如，当输出条纹等形态的结构光时，需要一个面光源，但是现在一般采用激光器作为结构光的光源，激光器的发光面积一般比较小，若采用具有较大发光面积的激光器比较贵，会大幅提高生产成本。
发明内容
本申请所要解决的技术问题在于提供一种光源模组、图像获取装置、身份识别装置及电子设备，旨在能够有效降低生产成本。
本申请是这样实现的，一种光源模组，其包括激光器、光束形成器及反射镜。该激光器用于发射红外激光束。该反射镜用于将该红外激光束进行反射，以延长该红外激光束的光路，增大该红外激光束的传递距离，使得被该反射镜反射的红外激光束所形成的面光源的面积增大。该光束形成器用于接收该反射镜所反射的红外激光束，并将所接收的红外激光束进行调制，形成图案化的结构光。
在某些实施方式中，该光源模组还包括一个中空的封装体。该激光器、该光束形成器及该反射镜均容置在该封装体内。
在某些实施方式中，该封装体包括一个出光部。该出光部与该光束形成器对应设置，使得该光束形成器所形成的结构光能够自该出光部射出。
在某些实施方式中，该激光器的发光面垂直于该出光部的出光面。
在某些实施方式中，该反射镜位于该光束形成器的下方，且位于该激光器的出光面的一侧。
在某些实施方式中，该反射镜相对于该激光器的发光面的倾斜角度范围为[30,60]度。
在某些实施方式中，该反射镜相对于该激光器的发光面的倾斜角度范围为45度。
在某些实施方式中，该出光部是透明的或半透明的。
在某些实施方式中，该封装体还包括相互贯通的容置腔及容置槽，该激光器及该反射镜容置在该容置腔内，该光束形成器容置在该容置槽内。
在某些实施方式中，该激光器及该反射镜分别设置在该容置腔的长度方向的相对两端，以进一步增大该红外激光束的传递距离。
在某些实施方式中，该光源模组还包括准直光学元件。该准直光学元件位于该反射镜与该光束形成器之间的光路上，用于将该反射镜所反射的红外激光束进行校准，形成平行光束；该平行光束进入该光束形成器内被调制成该图案化的结构光。
在某些实施方式中，该准直光学元件为微透镜阵列或菲涅尔透镜。
在某些实施方式中，该光束形成器包括衍射光学元件。
本申请还提供了一种图像获取装置，其包括传感模组及上述的光源模组。该光源模组用于发射图案化的结构光，并将该结构光投射至一目标物上。该传感模组用于获取被该目标物所反射的结构光的图像。
在某些实施方式中，该图像获取装置进一步包括处理器，用于根据该传感 模组获取的图像导出该目标物的3D图。
本申请还提供了一种身份识别装置，其包括传感模组、识别模组及上述的光源模组。该光源模组用于发射图案化的结构光，并将该结构光投射至一待测物体。该传感模组用于获取被该待测物体所反射的结构光的图像。该识别模组用于根据该图像获取装置所获取的图像进行身份识别。
在某些实施方式中，该身份识别装置包括脸部识别装置。
本申请还提供了一种电子设备，包括上述中任意一项所述的身份识别装置，所述电子设备用于根据该身份识别装置的识别结果来对应是否执行相应的功能。
在某些实施方式中，所述相应的功能包括解锁、支付、启动预存的应用程序中的任意一种或几种。
本申请与现有技术相比，有益效果在于：该光源模组利用该激光器所发射的红外激光束的发散角，通过反射镜反射的方式延长该非准直的红外激光束的光路，以增大该非准直的红外激光束的传递距离，使得该非准直的红外激光束所形成的面光源的面积增大，从而将发光面积较小的激光器所发射的红外激光束转换成较大面积的面光源，因此不需要采用昂贵的具有较大发光面积的激光器，有效降低生产成本。
附图说明
图1是本申请第一实施例提供的光源模组的结构示意图。
图2是本申请第二实施例提供的图像获取装置的结构示意图。
图3是本申请第三实施例提供的身份识别装置的结构示意图。
图4是本申请第四实施例提供的电子设备的结构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅 仅用以解释本申请，并不用于限定本申请。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设定进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设定之间的关系。
进一步地，所描述的特征、结构可以以任何合适的方式结合在一个或更多实施方式中。在下面的描述中，提供许多具体细节从而给出对本申请的实施方式的充分理解。然而，本领域技术人员应意识到，没有所述特定细节中的一个或更多，或者采用其它的结构、组元等，也可以实践本申请的技术方案。在其它情况下，不详细示出或描述公知结构或者操作以避免模糊本申请。
如图1所示，本申请第一实施例所提供的一种光源模组100，其包括一个中空的封装体10及容置在该封装体10内的激光器20、反射镜30、光束形成器40。
该封装体10包括一个容置腔11、一个容置槽12及一个出光部13。该容置槽12与该容置腔11相连通。该出光部13设置在该容置槽12远离该容置腔11的一侧。该出光部13用于接收并允许该光束形成器40所形成的结构光射出该封装体10。该出光部13例如是透明的或半透明的。
在本实施例中，该封装体10大致为长方体状，利用一个平行于该封装体10的底面及顶面的横截面将该封装体10分成第一部分及第二部分，该容置腔11为该第一部分内部的空间，该容置槽12为该第二部分中位于该封装体的长度方向上其中一端的内部的空间，该第二部分中除了该容置槽12之外的部分例如均为实心结构。
该激光器20设置在该容置腔11内，用于发射红外激光束。该红外激光束例如具有一定的发散角度，是非准直的。本实施例采用侧面发光的红外激光器，且该激光器20的发光面21垂直于该出光部13的出光面。该激光器20可以为 半导体边射型激光器(Edge Emitting Laser)，垂直共振腔面发射激光器(Vertical Cavity Surface Emitting Laser，VCSEL)或其它类型的激光器。
可变更地，在其它实施方式中，该激光器20也可是正面发光的光源，当该激光器20组装到该容置腔11中时，该激光器20侧放，其发光面21垂直于该出光部13的出光面。
该反射镜30设置在该容置腔11内，且位于该激光器20所发射的红外激光束的光路上，用于接收该激光器20所发射的红外激光束，并将所接收的该红外激光束进行反射，以延长该红外激光束的光路，增大该红外激光束的传递距离，使得被该反射镜30反射的红外激光束所形成的面光源的面积增大。在本实施例中，该反射镜30相对于该激光器20的发光面21的倾斜角度范围例如为[30,60]度。相应地，该反射镜30相对于该激光器20的发光面21的倾斜角度例如为[30,60]度中的任意一数值。在本实施方式中，该倾斜角度优选为45度。
由于该激光器20所发射的该红外激光束的发散角比较小，因此该激光器20及该反射镜30分别设置在该容置腔11的长度方向的相对两端，以有效利用该容置腔11的空间，进一步增大该反射镜30与该激光器20之间的距离，延长该红外激光束的光路，从而进一步增大该红外光束所形成的面光源的面积。
另外，该封装体10中对应该激光器20的上方并未设置其它光学元件，从而也有利于对该激光器20进行散热。
该光束形成器40设置在该容置槽12内，且与该出光部13对应设置。该光束形成器40位于所述反射镜30的光路上，用于接收该反射镜30所反射的红外激光束，并将所接收的红外激光束进行调制，形成图案化的结构光。在本实施例中，该光束形成器40例如大致为长方体状，且包括透明基板及形成在透明基板的上的相位波带衍射结构。经过该光束形成器40的衍射处理后的红外激光束能投影至任何适当的平面或空间上，形成具有一定图案的激光点阵图。通过改变该相位波带衍射结构，就能改变该光束形成器40处理后的红外激光束的图案。该光束形成器40例如但不局限于包括衍射光学元件(Diffractive Optical Element， DOE)。然而，可变更地，在其它实施方式中，该光束形成器40也可为其它合适类型的器件，能够实现形成图案化的结构光即可。该图案化的结构光例如呈条纹式、点阵式、网格式、编码式等。
该光源模组100的工作过程为：该激光器20发射红外激光束，并到达该反射镜30，被该反射镜30反射，以增大该红外激光束的传递距离，使得该红外激光束所形成的面光源的面积增大；该光束形成器40接收该面光源，并将所接收的面光源中的红外激光束进行调制，形成图案化的结构光，最后该结构光通过该出光部13射出。
在其它实施例中，也可在该反射镜30与该光束形成器40之间的光路上设置一个准直光学元件(比如微透镜阵列或菲涅尔透镜)，用于将该反射镜30所反射的非准直的红外激光束进行校准，形成平行光，以得到一个强度分布均匀的面光源。强度分布均匀的面光源被该光束形成器40调制后，能够得到强度分布均匀的结构光，并能够提高结构光的转换效率及图案精度。此时，该光源模组100的工作过程为：该激光器20发射出的非准直的红外激光束被该反射镜30反射后，形成一个面积较大的面光源；该面光源中的非准直的红外激光束进入该准直光学元件被校准形成准直的红外激光束，然后准直的红外激光束进入该光束形成器40被调制成结构光，最后该结构光从该出光部13射出。
进一步的，如图2所示，本申请第二实施例提供一种图像获取装置200，其包括传感模组201及如上述的光源模组100。该光源模组100用于发射图案化的结构光，并将该结构光投射至一目标物上。该传感模组201用于获取被该目标物所反射的结构光的图像。
另外，在某些实施例中，该图像获取装置200进一步包括处理器203，用于根据该传感模组201获取的图像导出该目标物的3D图。
进一步的，如图3所示，本申请第三实施例提供一种身份识别装置300，其包括传感模组301、识别模组302及上述的光源模组100。该光源模组100用于发射图案化的结构光，并将该结构光投射至一待测物体。该传感模组301 用于获取被该待测物体所反射的结构光的图像。该识别模组302用于根据该传感模组301所获得的图像进行身份识别。
该身份识别装置300例如为脸部识别装置。然，该身份识别装置300也可用于识别人体的其它合适部位，甚至用于识别其它的生物体或非生物体。
进一步的，如图4所示，本申请第四实施例提供一种电子设备400，其例如但不局限于为消费性电子产品、家居式电子产品、车载式电子产品、金融终端产品等合适类型的电子产品。其中，消费性电子产品例如但不局限为手机、平板电脑、笔记本电脑、桌面显示器、电脑一体机等。家居式电子产品例如但不局限为智能门锁、电视、冰箱、穿戴式设备等。车载式电子产品例如但不局限为车载导航仪、车载DVD等。金融终端产品例如但不局限为ATM机、自助办理业务的终端等。所述电子设备400包括上述身份识别装置300。所述电子设备400根据所述身份鉴权装置300的身份识别结果来对应是否执行相应的功能。所述相应的功能例如但不局限于包括解锁、支付、启动预存的应用程序中的任意一种或几种。
在本实施方式中，以电子设备400为手机为例进行说明。所述手机例如为全面屏的手机，所述身份识别装置300例如设置在手机的正面顶端。当然，所述手机也并不限制于全面屏手机。
例如，当用户需要进行开机解锁时，抬起手机或触摸手机的屏幕都可以起到唤醒该身份识别装置300的作用。当该身份识别装置300被唤醒之后，识别该手机前方的用户是合法的用户时，则解锁屏幕。
与现有技术相比较，本申请的光源模组100、图像获取装置100、身份识别装置300及电子设备400，利用该激光器20发射的红外激光束所具有的发散角，通过该反射镜30反射的方式延长该红外激光束的光路，以增大该红外激光束的传递距离，使得该红外激光束所形成的面光源的面积增大，从而将发光面积较小的激光器20所发射的红外激光束转换成较大面积的面光源，不需要采用昂贵的具有较大发光面积的激光器，有效降低生产成本。同时，由于该反射镜30 将该红外激光束的光路进行弯折，因此能有效缩小该光源模组100的体积。
在本说明书的描述中，参考术语“一个实施方式”、“某些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (19)

  1. 一种光源模组，其包括激光器及光束形成器，其特征在于，该光源模组还包括反射镜；该激光器用于发射非准直的红外激光束；该反射镜用于将该红外激光束进行反射，以延长该红外激光束的光路，增大该红外激光束的传递距离，使得被该反射镜反射的红外激光束所形成的面光源的面积增大；该光束形成器用于接收该反射镜所反射的红外激光束，并将所接收的红外激光束进行调制，形成图案化的结构光。
  2. 如权利要求1所述的光源模组，其特征在于，该光源模组还包括一个中空的封装体，该激光器、该光束形成器及该反射镜均容置在该封装体内。
  3. 如权利要求2所述的光源模组，其特征在于，该封装体包括一个出光部，该出光部与该光束形成器对应设置，使得该光束形成器所形成的结构光能够自该出光部射出。
  4. 如权利要求3所述的光源模组，其特征在于，该激光器的发光面垂直于该出光部的出光面。
  5. 如权利要求4所述的光源模组，其特征在于，该反射镜位于该光束形成器的下方，且位于该激光器的出光面的一侧。
  6. 如权利要求5所述的光源模组，其特征在于，该反射镜相对于该激光器的发光面的倾斜角度范围为[30,60]度。
  7. 如权利要求5所述的光源模组，其特征在于，该反射镜相对于该激光器的发光面的倾斜角度范围为45度。
  8. 如权利要求3所述的光源模组，其特征在于，该出光部是透明的或半透明的。
  9. 如权利要求2所述的光源模组，其特征在于，该封装体还包括相互贯通的容置腔及容置槽，该激光器及该反射镜容置在该容置腔内，该光束形成器容置在该容置槽内。
  10. 如权利要求9所述的光源模组，其特征在于，该激光器及该反射镜分 别设置在该容置腔的长度方向的相对两端，以进一步增大该红外激光束的传递距离。
  11. 如权利要求1所述的光源模组，其特征在于，该光源模组还包括准直光学元件，该准直光学元件位于该反射镜与该光束形成器之间的光路上，用于将该反射镜所反射的红外激光束进行校准，形成平行光束；该平行光束进入该光束形成器内被调制成该图案化的结构光。
  12. 如权利要求11所述的光源模组，其特征在于，该准直光学元件为微透镜阵列或菲涅尔透镜。
  13. 如权利要求1-12中任意一项所述的光源模组，其特征在于，该光束形成器包括衍射光学元件。
  14. 一种图像获取装置，其特征在于，其包括传感模组及如上述权利要求1-13中任一项所述的光源模组，该光源模组用于发射图案化的结构光，并将该结构光投射至一目标物上；该传感模组用于获取被该目标物所反射的结构光的图像。
  15. 如权利要求14所述的图像获取装置，其特征在于，该图像获取装置进一步包括处理器，用于根据该传感模组获取的图像导出该目标物的3D图。
  16. 一种身份识别装置，其特征在于，其包括传感模组、识别模组及权利要求1-13中任一项所述的光源模组，该光源模组用于发射图案化的结构光，并将该结构光投射至一待测物体；该传感模组用于获取被该待测物体所反射的结构光的图像；该识别模组用于根据该传感模组所获取的图像进行身份识别。
  17. 如权利要求16所述的身份识别装置，其特征在于，该身份识别装置包括脸部识别装置。
  18. 一种电子设备，包括权利要求16-17中任意一项所述的身份识别装置，所述电子设备用于根据该身份识别装置的识别结果来对应是否执行相应的功能。
  19. 如权利要求18所述的电子设备，其特征在于：所述相应的功能包括解锁、支付、启动预存的应用程序中的任意一种或几种。
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