WO2019213865A1 - Light source module, image acquisition device, identity recognition device and electronic apparatus - Google Patents

Light source module, image acquisition device, identity recognition device and electronic apparatus Download PDF

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Publication number
WO2019213865A1
WO2019213865A1 PCT/CN2018/086152 CN2018086152W WO2019213865A1 WO 2019213865 A1 WO2019213865 A1 WO 2019213865A1 CN 2018086152 W CN2018086152 W CN 2018086152W WO 2019213865 A1 WO2019213865 A1 WO 2019213865A1
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Prior art keywords
light source
light
source module
electronic device
image acquisition
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PCT/CN2018/086152
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French (fr)
Chinese (zh)
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/CN2018/086152 priority Critical patent/WO2019213865A1/en
Priority to CN201880000782.5A priority patent/CN108702218A/en
Publication of WO2019213865A1 publication Critical patent/WO2019213865A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/502—LED transmitters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components

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.
  • 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 identification, projector, three-dimensional (3D) contour reproduction, depth measurement, anti-counterfeiting identification. Therefore, how to provide a light source module capable of emitting structured light has become the focus of research.
  • the current light source module generally uses a laser emitter array as a light source, which results in a large volume of the light source module, which can only be applied to a large-sized device. If the size of the device itself is small, the size of the light source module must also be small. For example, the distance between the exit points of two adjacent laser emitters in the light source module on the mobile phone is 10 micrometers, and an expensive vertical cavity surface emitting laser (VCSEL) is usually adopted, and the complicated And the special manufacturing process can achieve this requirement, and the pattern formed by the VCSEL is fixed, so it is not easy to widely spread the application.
  • VCSEL vertical cavity surface emitting laser
  • 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 capable of changing a light source pattern, which are intended to be small in size, low in cost, and simple in manufacturing process.
  • a light source module that converts a light source pattern includes a light source and a beam former.
  • This light source is used to emit light.
  • the beamformer is configured to receive light emitted by the light source and modulate the received light to form patterned structured light.
  • the light source includes a miniature light emitting diode array.
  • the light source module further includes a driving chip capable of dynamically controlling the lighting of each of the miniature light emitting diodes as needed to form a desired patterned light emitting array.
  • the light source module further includes a package.
  • the package includes a receiving cavity and a light exiting portion.
  • the light source and the beam forming element are both housed in the accommodating cavity.
  • the structured light formed by the beam former can be emitted from the light exit portion.
  • the light exiting portion is transparent or translucent.
  • the light source module further includes a collimating lens.
  • the collimating lens is disposed between the light source and the beam forming element for aligning the light emitted by the light source into parallel light and then entering the beam forming element.
  • the collimating optical element is a microlens array or a Fresnel lens.
  • the beam former comprises a diffractive optical element or an imaging lens.
  • 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 obtaining device further includes a processor, configured to derive a 3D map of the target according to the image acquired by the sensing module.
  • the application also provides an identification device including an identification module and the image acquisition device described above.
  • 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 including the above-mentioned identity recognition device, and 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 corresponding function includes unlocking, paying, and starting any one or more of the pre-stored applications.
  • the electronic device includes a display screen, which is a miniature light emitting diode array, and a top end region of the display screen is multiplexed as a light source of the light source module.
  • the electronic device further includes an earpiece located on one side or opposite sides of the earpiece.
  • the application has the advantages that the light source module comprises a miniature light emitting diode array, which is small in size, low in cost and simple in manufacturing process.
  • FIG. 1 is a schematic structural diagram of a light source module according to an embodiment of the present application.
  • FIG. 2 and 3 are schematic structural views of a light source of the light source module of FIG. 1.
  • FIG. 4 and FIG. 5 are schematic diagrams showing the structure of an image acquiring apparatus according to a second embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a facial identity recognition apparatus according to a third embodiment of the present application.
  • FIG. 7 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 light source 20 and a beam former 30 housed in the package 10 .
  • the package body 10 includes a receiving cavity 11 and a light exiting portion 13.
  • the light source 20 and the beam former 30 are both accommodated in the accommodating cavity 11.
  • the light source 20 is for emitting light.
  • the light source 20 is an array including a micro light emitting diode (Micro-LED).
  • the light source 20 can be a plurality of independent Micro-LEDs.
  • the plurality of independent Micro-LEDs are arranged, for example, in a rectangular array.
  • the plurality of independent Micro-LEDs may also be arranged in other regular or irregular manners.
  • the light source module 100 further includes, for example, a driving chip 40 capable of dynamically controlling the lighting of each Micro-LED according to a user's needs, thereby forming a desired patterned light-emitting array. Therefore, when the DOE diffraction layer is superimposed on the Micro-LED array, any dynamically changing diffraction pattern can be achieved, and the control pattern change requires almost no cost.
  • a driving chip 40 capable of dynamically controlling the lighting of each Micro-LED according to a user's needs, thereby forming a desired patterned light-emitting array. Therefore, when the DOE diffraction layer is superimposed on the Micro-LED array, any dynamically changing diffraction pattern can be achieved, and the control pattern change requires almost no cost.
  • Each Micro-LED can be regarded as one pixel, which can be addressed and individually driven to light, reducing the pitch of adjacent pixels to the micron level. That is to say, the light source 20 is made by using a micro-light emitting diode (Micro-LED) technology.
  • the Micro-LED technology is a technology for miniaturization and matrixing of LEDs, which not only has the advantages of high efficiency, high brightness, high reliability and fast response time, but also has small size, light weight, and can effectively save energy and electricity.
  • the beam former 30 is configured to receive the light emitted by the light source 20 and modulate the received light to form patterned structured light.
  • the patterned structured light is projected onto an indexing surface 101 (see Figure 1) to form an image. This image is determined by the pattern of the light source 20 and the structure of the beam former 30.
  • the beam former 30 is, for example, substantially rectangular parallelepiped, and includes a transparent substrate and a phase band diffraction structure formed on the transparent substrate.
  • the diffracted light passing through the beam former 30 can be projected onto any suitable plane or space to form an image having a pattern.
  • the pattern of the structured light formed by the beam former 30 can be changed.
  • the beam former 30 includes, for example but without limitation, a diffractive optical element (DOE) or an imaging lens.
  • DOE diffractive optical element
  • the beam former 30 can be other suitable types of devices, and can form patterned structured light.
  • the patterned structured light is, for example, striped, dot matrix, mesh format, coded, or the like.
  • the light exiting portion 13 is configured to receive and allow structured light formed by the beam former 30 to exit the package 10.
  • the light exit portion 13 is, for example, transparent or translucent.
  • the light source module 100 operates in such a manner that the light emitted by the light source 20 reaches the beam former 30, is modulated into 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
  • a collimating optical element may be disposed on the optical path between the light source 20 and the beam former 30 for the light emitted by the light source 20. Calibration is performed to form parallel light to obtain a light source having a uniform intensity distribution.
  • the light source having a uniform intensity distribution is modulated by the beam former 30 to obtain structured light having a uniform intensity distribution, and the conversion efficiency and pattern accuracy of the structured light can be improved.
  • the light source module 100 works by: the light emitted by the light source 20 reaches a collimating optical element (not shown) and is calibrated into parallel light; the parallel light reaches the beam former 30 and is modulated into The structured light is patterned; finally, the structured light is emitted through 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 acquisition device 200 further includes a processor (not shown) for deriving a 3D map of the target according to the image acquired by the sensing module 201.
  • the light source module 100 when the light source module 100 is a patterned light-emitting array composed of a plurality of independent micro-LEDs, the light source 20 (see FIG. 1) may be disposed on an electron applied by the image acquisition device 200.
  • the display screen 401 of the device 400 (such as a cell phone) (such as the area surrounded by thick lines in the figure) is external (such as around).
  • the light source 20 when the light source module 100 is fabricated by Micro-LED technology, the light source 20 (see FIG. 1) can be displayed with the display screen 401 of the electronic device 400 (such as a mobile phone) to which the image acquisition device 200 is applied. (The area surrounded by the thick line in the figure) is an integrally formed structure, and then the beam forming element 30 is superimposed on the outside of the light source 20.
  • the display screen 401 is a micro-LED array, and the top end area of the display screen 401 is multiplexed as the light source 20 of the light source module 100.
  • the electronic device 400 further includes an earpiece (not labeled) that is located on one or opposite sides of the earpiece.
  • 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 onto 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 light source 20 may be disposed on an electronic device (such as a mobile phone) to which the identification device 300 is applied.
  • the outside of the display (such as around).
  • the light source 20 may be integrally formed with the display screen of the electronic device (such as a mobile phone) to which the identification device 300 is applied, and then The light beam forming element 30 may be superposed on the outer side of the light source 20.
  • 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 recognition 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 200, the identification device 300, and the electronic device 400 of the present application use a patterned illumination array composed of a plurality of independent Micro-LEDs as a light source, and has a small volume. The cost is low and the production process is simple, and at the same time, energy saving and energy saving can be achieved.
  • the diffraction pattern of the light source module 100 can be dynamically adjusted according to user needs.

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Abstract

The present invention is applicable to the field of optical techniques. Provided is a light source module. The light source module comprises a light source and a beam shaper. The light source is used to emit light rays. The light source comprises an array of micro-light-emitting diodes. The beam shaper is used to receive the light rays emitted by the light source, and to modulate the received light rays so as to form patterned structure light. Also provided are an image acquisition device using the light source module, an identity recognition device, and an electronic apparatus. The present invention uses a light source comprising an array of micro-light-emitting diodes, and thus has a compact size and can provide patterns flexibly.

Description

一种光源模组、图像获取装置、身份识别装置及电子设备Light source module, image acquisition device, identification device and electronic device 技术领域Technical field
本申请属于光学技术领域，尤其涉及一种光源模组、图像获取装置、身份识别装置及电子设备。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.
背景技术Background technique
“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，比如身份识别、投影仪、三维(Three-dimensional，3D)轮廓重现、深度测量、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。"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. With the rapid development of optical technology, the application range of structured light is more and more extensive, such as identification, projector, three-dimensional (3D) contour reproduction, depth measurement, anti-counterfeiting identification. Therefore, how to provide a light source module capable of emitting structured light has become the focus of research.
现在的光源模组一般采用激光发射器阵列作为光源，这就导致光源模组的体积较大，只能应用在体积较大的设备上。若设备本身的体积较小，就必须要求光源模组的尺寸也必须很小。比如手机上的光源模组中的相邻两个激光发射器出光点之间的间距为10微米级别，通常采用价格昂贵的垂直腔面发射激光器(Vertical Cavity Surface Emitting Laser，VCSEL)，且采用复杂且特殊的制作工艺才能达到这种要求，并且VCSEL形成的图案固定，因此并不容易广泛推广应用。The current light source module generally uses a laser emitter array as a light source, which results in a large volume of the light source module, which can only be applied to a large-sized device. If the size of the device itself is small, the size of the light source module must also be small. For example, the distance between the exit points of two adjacent laser emitters in the light source module on the mobile phone is 10 micrometers, and an expensive vertical cavity surface emitting laser (VCSEL) is usually adopted, and the complicated And the special manufacturing process can achieve this requirement, and the pattern formed by the VCSEL is fixed, so it is not easy to widely spread the application.
发明内容Summary of the invention
本申请所要解决的技术问题在于提供一种可变换光源图案的光源模组、图像获取装置、身份识别装置及电子设备，旨在体积小、成本低且制作工艺简单。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 capable of changing a light source pattern, which are intended to be small in size, low in cost, and simple in manufacturing process.
本申请是这样实现的，一种可变换光源图案的光源模组，其包括光源及光束形成器。该光源用于发射光线。该光束形成器用于接收该光源所发射的光线， 并将所接收的光线进行调制，形成图案化的结构光。该光源包括微型发光二极管阵列。The present application is implemented in such a manner that a light source module that converts a light source pattern includes a light source and a beam former. This light source is used to emit light. The beamformer is configured to receive light emitted by the light source and modulate the received light to form patterned structured light. The light source includes a miniature light emitting diode array.
进一步地，该光源模组进一步包括驱动芯片，该驱动芯片能够根据需要动态控制每个微型发光二极管的点亮与否，从而形成所需的图案化的发光阵列。Further, the light source module further includes a driving chip capable of dynamically controlling the lighting of each of the miniature light emitting diodes as needed to form a desired patterned light emitting array.
进一步地，该光源模组还包括一个封装体。该封装体包括容置腔及出光部。该光源及该光束形成元件均容置在该容置腔内。该光束形成器所形成的结构光能够自该出光部射出。Further, the light source module further includes a package. The package includes a receiving cavity and a light exiting portion. The light source and the beam forming element are both housed in the accommodating cavity. The structured light formed by the beam former can be emitted from the light exit portion.
进一步地，该出光部是透明的或半透明的。Further, the light exiting portion is transparent or translucent.
进一步地，该光源模组还包括一个准直透镜。该准直透镜设置在该光源与该光束形成元件之间，用于将该光源所发射的光线校准成平行光之后，再射入该光束形成元件。Further, the light source module further includes a collimating lens. The collimating lens is disposed between the light source and the beam forming element for aligning the light emitted by the light source into parallel light and then entering the beam forming element.
进一步地，该准直光学元件为微透镜阵列或菲涅尔透镜。Further, the collimating optical element is a microlens array or a Fresnel lens.
进一步地，该光束形成器包括衍射光学元件或者成像透镜。Further, the beam former comprises a diffractive optical element or an imaging lens.
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。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.
进一步地，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。Further, the image obtaining device further includes a processor, configured to derive a 3D map of the target according to the image acquired by the sensing module.
本申请还提供了一种身份识别装置，其包括识别模组及上述的图像获取装置。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。The application also provides an identification device including an identification module and the image acquisition device described above. The identification module is configured to perform identity recognition according to an image acquired by the image acquisition device.
在某些实施方式中，该身份识别装置包括脸部识别装置。In some embodiments, the identification device comprises a face recognition device.
本申请还提供了一种电子设备，包括上述的身份识别装置，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。The present application also provides an electronic device including the above-mentioned identity recognition device, and the electronic device is configured to correspond to whether to perform a corresponding function according to the recognition result of the identity recognition device.
进一步地，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。Further, the corresponding function includes unlocking, paying, and starting any one or more of the pre-stored applications.
进一步地，该电子设备包括显示屏幕，该显示屏幕为微型发光二极管阵列， 该显示屏幕的顶端区域复用作为该光源模组的光源。Further, the electronic device includes a display screen, which is a miniature light emitting diode array, and a top end region of the display screen is multiplexed as a light source of the light source module.
进一步地，该电子设备进一步包括听筒，该顶端区域位于听筒的一侧或相对两侧。Further, the electronic device further includes an earpiece located on one side or opposite sides of the earpiece.
本申请与现有技术相比，有益效果在于：该光源模组采用包括微型发光二极管阵列，体积小、成本低且制作工艺简单。Compared with the prior art, the application has the advantages that the light source module comprises a miniature light emitting diode array, which is small in size, low in cost and simple in manufacturing process.
附图说明DRAWINGS
图1是本申请实施例提供的光源模组的结构示意图。FIG. 1 is a schematic structural diagram of a light source module according to an embodiment of the present application.
图2及图3是图1的光源模组的光源的结构示意图。2 and 3 are schematic structural views of a light source of the light source module of FIG. 1.
图4及图5是本申请第二实施例提供的图像获取装置的结构示意图。FIG. 4 and FIG. 5 are schematic diagrams showing the structure of an image acquiring apparatus according to a second embodiment of the present application.
图6是本申请第三实施例提供的脸部身份识别装置的结构示意图。FIG. 6 is a schematic structural diagram of a facial identity recognition apparatus according to a third embodiment of the present application.
图7是本申请第四实施例提供的电子设备的结构示意图。FIG. 7 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present application.
具体实施方式detailed description
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。In order to make the objects, technical solutions, and advantages of the present application more comprehensible, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.
如图1所示，本申请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内的一光源20、一光束形成器30。As shown in FIG. 1 , a light source module 100 includes a hollow package 10 and a light source 20 and a beam former 30 housed in the package 10 .
该封装体10包括一个容置腔11及一个出光部13。The package body 10 includes a receiving cavity 11 and a light exiting portion 13.
该光源20及该光束形成器30均容置在该容置腔11内。The light source 20 and the beam former 30 are both accommodated in the accommodating cavity 11.
该光源20用于发射光线。该光源20为包括微型发光二极管(micro light emitting diode，Micro-LED)阵列。The light source 20 is for emitting light. The light source 20 is an array including a micro light emitting diode (Micro-LED).
具体的，如图2所示，该光源20可以为多个独立的Micro-LED。在本实施例中，该多个独立的Micro-LED例如呈矩形阵列排布。然，可变更地，在其它实施方式中，该多个独立的Micro-LED也可以呈其它规则或非规则方式排布。Specifically, as shown in FIG. 2, the light source 20 can be a plurality of independent Micro-LEDs. In this embodiment, the plurality of independent Micro-LEDs are arranged, for example, in a rectangular array. However, in other embodiments, the plurality of independent Micro-LEDs may also be arranged in other regular or irregular manners.
如图1所示，该光源模组100例如进一步包括驱动芯片40，该驱动芯片40能够根据用户需要动态控制每个Micro-LED的点亮与否，从而形成所需的图案化的发光阵列。因此，当在Micro-LED阵列上叠加DOE衍射层时，可以达到任意动态变化衍射图案，且控制图案变化几乎不需要成本。As shown in FIG. 1 , the light source module 100 further includes, for example, a driving chip 40 capable of dynamically controlling the lighting of each Micro-LED according to a user's needs, thereby forming a desired patterned light-emitting array. Therefore, when the DOE diffraction layer is superimposed on the Micro-LED array, any dynamically changing diffraction pattern can be achieved, and the control pattern change requires almost no cost.
每个Micro-LED均可视为一个像素，均可定址、单独驱动点亮，将相邻像素点的间距降低至微米级。也就是说，该光源20采用微型发光二极管(Micro-Light emitting diode，Micro-LED)技术制成。该Micro-LED技术为LED的微缩化和矩阵化的技术，不仅具有高效率、高亮度及高可靠性及反应时间快的优点，而且体积小、轻薄，能有效节能省电。Each Micro-LED can be regarded as one pixel, which can be addressed and individually driven to light, reducing the pitch of adjacent pixels to the micron level. That is to say, the light source 20 is made by using a micro-light emitting diode (Micro-LED) technology. The Micro-LED technology is a technology for miniaturization and matrixing of LEDs, which not only has the advantages of high efficiency, high brightness, high reliability and fast response time, but also has small size, light weight, and can effectively save energy and electricity.
该光束形成器30用于接收该光源20所发射的光线，并将所接收的光线进行调制，形成图案化的结构光。该图案化的结构光投影在一标定面101(见图1)上形成图像。该图像由该光源20的图案及该光束形成器30的结构决定。The beam former 30 is configured to receive the light emitted by the light source 20 and modulate the received light to form patterned structured light. The patterned structured light is projected onto an indexing surface 101 (see Figure 1) to form an image. This image is determined by the pattern of the light source 20 and the structure of the beam former 30.
在本实施例中，该光束形成器30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30的衍射处理后的光线能投影至任何适当的平面或空间上，形成具有一定图案的图像。通过改变该相位波带衍射结构，就能改变该光束形成器30所形成的结构光的图案。该光束形成器30例如但不局限于包括衍射光学元件(Diffractive Optical Element，DOE)或成像透镜。然而，可变更地，在其它实施方式中，该光束形成器30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。In the present embodiment, the beam former 30 is, for example, substantially rectangular parallelepiped, and includes a transparent substrate and a phase band diffraction structure formed on the transparent substrate. The diffracted light passing through the beam former 30 can be projected onto any suitable plane or space to form an image having a pattern. By changing the phase band diffraction structure, the pattern of the structured light formed by the beam former 30 can be changed. The beam former 30 includes, for example but without limitation, a diffractive optical element (DOE) or an imaging lens. However, in other embodiments, the beam former 30 can be other suitable types of devices, and can form patterned structured light. The patterned structured light is, for example, striped, dot matrix, mesh format, coded, or the like.
该出光部13用于接收并允许该光束形成器30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。The light exiting portion 13 is configured to receive and allow structured light formed by the beam former 30 to exit the package 10. The light exit portion 13 is, for example, transparent or translucent.
该光源模组100的工作过程为：该光源20所发射的光线到达该光束形成器30，被调制成图案化的结构光，最后该结构光通过该出光部13射出。The light source module 100 operates in such a manner that the light emitted by the light source 20 reaches the beam former 30, is modulated into patterned structured light, and finally the structured light is emitted through the light exit portion 13.
其它实施例中，也可在该光源20与该光束形成器30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)，用于将该光源20所发射的 光线进行校准，形成平行光，以得到一个强度分布均匀的光源。强度分布均匀的光源被该光束形成器30调制后，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：该光源20所发射的光线到达准直光学元件(图未示)，被校准成平行光；该平行光到达该光束形成器30，被调制成图案化的结构光；最后该结构光通过该出光部13射出。In other embodiments, a collimating optical element (such as a microlens array or a Fresnel lens) may be disposed on the optical path between the light source 20 and the beam former 30 for the light emitted by the light source 20. Calibration is performed to form parallel light to obtain a light source having a uniform intensity distribution. The light source having a uniform intensity distribution is modulated by the beam former 30 to obtain structured light having a uniform intensity distribution, and the conversion efficiency and pattern accuracy of the structured light can be improved. At this time, the light source module 100 works by: the light emitted by the light source 20 reaches a collimating optical element (not shown) and is calibrated into parallel light; the parallel light reaches the beam former 30 and is modulated into The structured light is patterned; finally, the structured light is emitted through the light exit portion 13.
进一步的，如图4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。Further, as shown in FIG. 4, 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.
在某些实施方式中，该图像获取装置200例如进一步包括处理器(图未示)，用于根据该传感模组201获取的图像导出该目标物的3D图。In some embodiments, the image acquisition device 200 further includes a processor (not shown) for deriving a 3D map of the target according to the image acquired by the sensing module 201.
如图4所示，当该光源模组100为多个独立的Micro-LED所组成的图案化的发光阵列时，该光源20(见图1)可以设置在该图像获取装置200所应用的电子设备400(比如手机)的显示屏幕401(图中粗线所包围的区域)的外部(比如周围)。As shown in FIG. 4, when the light source module 100 is a patterned light-emitting array composed of a plurality of independent micro-LEDs, the light source 20 (see FIG. 1) may be disposed on an electron applied by the image acquisition device 200. The display screen 401 of the device 400 (such as a cell phone) (such as the area surrounded by thick lines in the figure) is external (such as around).
如图5所示，当该光源模组100采用Micro-LED技术制成时，该光源20(见图1)可以与该图像获取装置200所应用的电子设备400(比如手机)的显示屏幕401(图中粗线所包围的区域)为一体成型结构，然后在该光源20的外侧叠加该光束形成元件30即可。As shown in FIG. 5, when the light source module 100 is fabricated by Micro-LED technology, the light source 20 (see FIG. 1) can be displayed with the display screen 401 of the electronic device 400 (such as a mobile phone) to which the image acquisition device 200 is applied. (The area surrounded by the thick line in the figure) is an integrally formed structure, and then the beam forming element 30 is superimposed on the outside of the light source 20.
例如，该显示屏幕401为Micro-LED阵列，该显示屏幕401的顶端区域复用作为该光源模组100的光源20。For example, the display screen 401 is a micro-LED array, and the top end area of the display screen 401 is multiplexed as the light source 20 of the light source module 100.
该电子设备400进一步包括听筒(未标示)，该顶端区域位于听筒的一侧或相对两侧。The electronic device 400 further includes an earpiece (not labeled) that is located on one or opposite sides of the earpiece.
进一步的，如图6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。Further, as shown in FIG. 6, 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 onto 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.
该身份识别装置300例如为脸部识别装置。然而，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。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.
当该光源模组100为多个独立的Micro-LED所组成的图案化的发光阵列时，该光源20(见图1)可以设置在该身份识别装置300所应用的电子设备(比如手机)的显示屏的外部(比如周围)。When the light source module 100 is a patterned light-emitting array composed of a plurality of independent micro-LEDs, the light source 20 (see FIG. 1) may be disposed on an electronic device (such as a mobile phone) to which the identification device 300 is applied. The outside of the display (such as around).
当该光源模组100采用Micro-LED技术制成时，该光源20(见图1)可以与该身份识别装置300所应用的电子设备(比如手机)的显示屏为一体成型结构，然后在该光源20的外侧叠加该光束形成元件30即可。When the light source module 100 is fabricated by using the Micro-LED technology, the light source 20 (see FIG. 1) may be integrally formed with the display screen of the electronic device (such as a mobile phone) to which the identification device 300 is applied, and then The light beam forming element 30 may be superposed on the outer side of the light source 20.
进一步的，如图7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根据所述身份识别装置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。Further, as shown in FIG. 7, 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. Among them, consumer 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 recognition 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.
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。In the present embodiment, 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. Of course, the mobile phone is not limited to a full screen mobile phone.
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200、身份识别装置300及电子设备400，采用多个独立的Micro-LED所组成的图案化的发光阵列作为光源，体积小、成本低且制作工艺简单，同时还能有效节能省电。另外，光源模组100的衍射图案可根据用户需要动态调整。For example, when the user needs to perform boot unlocking, the screen of lifting up the mobile phone or touching the mobile phone can function to wake up the identity recognition device 300. When 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. Compared with the prior art, the light source module 100, the image acquisition device 200, the identification device 300, and the electronic device 400 of the present application use a patterned illumination array composed of a plurality of independent Micro-LEDs as a light source, and has a small volume. The cost is low and the production process is simple, and at the same time, energy saving and energy saving can be achieved. In addition, the diffraction pattern of the light source module 100 can be dynamically adjusted according to user needs.
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。The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection of the present application. Within the scope.

Claims (15)

  1. 一种光源模组，其包括光源及光束形成器，该光源用于发射光线；该光束形成器用于接收该光源所发射的光线，并将所接收的光线进行调制，形成图案化的结构光；其特征在于，该光源包括微型发光二极管阵列。A light source module includes a light source and a beam former for emitting light; the beam former is configured to receive light emitted by the light source, and modulate the received light to form patterned structured light; Characterized in that the light source comprises a miniature light emitting diode array.
  2. 如权利要求1或2所述的光源模组，其特征在于，该光源模组进一步包括驱动芯片，该驱动芯片能够根据需要动态控制每个微型发光二极管的点亮与否，从而形成所需的图案化的发光阵列。The light source module of claim 1 or 2, wherein the light source module further comprises a driving chip, wherein the driving chip can dynamically control the lighting of each of the micro LEDs as needed to form a desired A patterned array of illumination.
  3. 如权利要求1或2所述的光源模组，其特征在于，该光源模组还包括一个封装体，该封装体包括容置腔及出光部，该光源及该光束形成元件均容置在该容置腔内，该光束形成器所形成的结构光能够自该出光部射出。The light source module of claim 1 or 2, wherein the light source module further comprises a package body, the package body includes a receiving cavity and a light exiting portion, and the light source and the light beam forming component are accommodated in the light source module The structured light formed by the beam former can be emitted from the light exiting portion in the accommodating cavity.
  4. 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。The light source module according to claim 3, wherein the light exiting portion is transparent or translucent.
  5. 如权利要求1或2所述的光源模组，其特征在于，该光源模组还包括一个准直透镜；该准直透镜设置在该光源与该光束形成元件之间，用于将该光源所发射的光线校准成平行光之后，再射入该光束形成元件。The light source module according to claim 1 or 2, wherein the light source module further comprises a collimating lens; the collimating lens is disposed between the light source and the beam forming element for the light source The emitted light is calibrated into parallel light and then incident on the beam forming element.
  6. 如权利要求5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。The light source module according to claim 5, wherein the collimating optical element is a microlens array or a Fresnel lens.
  7. 如权利要求1或2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或者成像透镜。The light source module according to claim 1 or 2, wherein the beam former comprises a diffractive optical element or an imaging lens.
  8. 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1-7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。An image acquisition device, comprising: a sensing module and a light source module according to any one of claims 1-7, wherein the light source module is configured to emit patterned structured light and The structured light is projected onto a target; the sensing module is configured to acquire an image of the structured light reflected by the target.
  9. 如权利要求1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。The image acquisition device according to claim 1, wherein the image acquisition device further comprises a processor, configured to derive a 3D image of the object according to the image acquired by the sensing module.
  10. 一种身份识别装置，其特征在于，其包括识别模组及权利要求8-9中 任一项所述的图像获取装置；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。An identification device, comprising: an identification module and the image acquisition device according to any one of claims 8-9; the identification module is configured to perform identification according to an image acquired by the image acquisition device .
  11. 如权利要求10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。The identity recognition device of claim 10 wherein the identity recognition device comprises a face recognition device.
  12. 一种电子设备，包括权利要求10-11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。An electronic device comprising the identity recognition device according to any one of claims 10-11, wherein the electronic device is configured to correspond to whether a corresponding function is performed according to a recognition result of the identity recognition device.
  13. 如权利要求12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。The electronic device of claim 12, wherein the corresponding function comprises unlocking, paying, and starting any one or more of the pre-stored applications.
  14. 如权利要求12所述的电子设备，其特征在于：该电子设备包括显示屏幕，该显示屏幕为微型发光二极管阵列，该显示屏幕的顶端区域复用作为该光源模组的光源。The electronic device according to claim 12, wherein the electronic device comprises a display screen, wherein the display screen is a miniature light emitting diode array, and a top end region of the display screen is multiplexed as a light source of the light source module.
  15. 如权利要求14所述的电子设备，其特征在于：该电子设备进一步包括听筒，该顶端区域位于听筒的一侧或相对两侧。The electronic device of claim 14 wherein the electronic device further comprises an earpiece, the top end region being located on one or opposite sides of the earpiece.
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