WO2023236898A1 - 光电检测模组及电子设备 - Google Patents

光电检测模组及电子设备 Download PDF

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Publication number
WO2023236898A1
WO2023236898A1 PCT/CN2023/098282 CN2023098282W WO2023236898A1 WO 2023236898 A1 WO2023236898 A1 WO 2023236898A1 CN 2023098282 W CN2023098282 W CN 2023098282W WO 2023236898 A1 WO2023236898 A1 WO 2023236898A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection module
photoelectric detection
bracket
frame
ring member
Prior art date
Application number
PCT/CN2023/098282
Other languages
English (en)
French (fr)
Inventor
杨素林
佘勇
李东
李小林
赵梦龙
田宇强
Original Assignee
华为技术有限公司
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
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023236898A1 publication Critical patent/WO2023236898A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/026—Measuring blood flow
    • A61B5/0295—Measuring blood flow using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue

Definitions

  • This application relates to the field of health detection technology, and in particular to a photoelectric detection module and electronic equipment.
  • Sports wearable products are the most popular among users. Sports wearable products can detect users' heart rate, blood oxygen and other biological parameters, allowing users to understand their own physical conditions. Sports wearable products usually use photoplethysmography (PPG) to detect changes in blood volume in living tissues.
  • PPG photoplethysmography
  • the basic principle is to use a light emitter to irradiate a beam of light onto the skin surface, and the contraction and expansion of blood vessels (i.e., blood vessels) caused by each heartbeat are Changes in volume) will affect the transmission of light (such as the light passing through the fingertip in the transmission PPG) or the reflection of the light (such as the light coming from near the wrist surface in the reflective PPG), and the use of light detectors can detect the projected light Or changes in reflected light, by converting changes in light into electrical signals, thereby reflecting blood flow characteristics.
  • blood vessels i.e., blood vessels
  • modules in sports wearable products that can detect blood status are usually PPG modules.
  • PPG module In order for the PPG module to meet the detection accuracy required by users, high assembly and processing requirements are required, resulting in a complicated production process. .
  • This application provides a photoelectric detection module and electronic equipment. Compared with the existing technology, the production process of the photoelectric detection module and electronic equipment of this application is more optimized.
  • the first aspect of this application provides a photoelectric detection module.
  • the photoelectric detection module includes a protective cover, a bracket and a circuit board.
  • the circuit board includes a main body, a light emitter and a light detector are installed on the main body, one side of the bracket is installed on the main body, and a protective cover is installed on the side of the bracket away from the main body.
  • the main body, the bracket and the protective cover form a cavity, and the light emitter and light detector are The detectors are all located in the chamber.
  • the body of the circuit board serves as the installation carrier for the light emitter and the light detector.
  • the light emitter and the light detector are electrically connected to the body respectively.
  • the light emitter When powered on, the light emitter irradiates light to the outside of the photoelectric detection module, and the light detector receives the light.
  • the reflected light reflects the user's blood flow by detecting changes in reflected light, and calculates the user's heart rate, blood oxygen and other biological parameters.
  • the light emitted by the light emitter is illuminated to the user through the protective cover, and the reflected light is received by the light detector through the protective cover.
  • the body, bracket and protective cover form a cavity, that is, a closed space, when the light emitter and the light detector are both located in the cavity, the cavity can protect the light emitter and the light detector from interference and damage by external foreign objects. , so that the light emitter and light detector work in a normal state, thereby ensuring the working reliability of the photoelectric detection module.
  • this application uses the body, the bracket and the protective cover to form a cavity that can protect the light emitter and the light detector, so that the protection of the light emitter and the light detector is It does not rely on the casing, that is, the photoelectric detection module and the casing can be decoupled and manufactured.
  • the required processing technology is less difficult and high assembly accuracy is not required, thus making the manufacturing process more optimized and reducing the manufacturing cost.
  • the process difficulty of enclosing the body, bracket and protective cover to form a cavity is also less difficult than the injection molding process.
  • the injection molding protection method needs to be on the surface of the light emitter and light detector.
  • the packaging process is precisely controlled to meet optical performance requirements such as light transmittance and light loss. Therefore, the production process of the injection molding protection method is more complicated and costly.
  • a pre-made protective cover can be used to be directly installed on the bracket. Yes, therefore the manufacturing process of the photoelectric detection module of the present application is more optimized and the manufacturing cost is lower.
  • the bracket includes a hollow portion located in the cavity, and the light emitter and the light detector are both located in the hollow portion.
  • the hollow part prevents the light from being obstructed by the bracket between the body and the protective cover, so that the light emitted by the light emitter installed on the body can be irradiated to the protective cover through the hollow part, and the light passes through the transparent part.
  • the optical protective cover irradiates the user, and the reflected light is received by the light detector installed on the body along the opposite path.
  • both the light emitter and the light detector are located in the hollow part, making the distance between the body and the protective cover closer, thereby making the structure of the photoelectric detection module of the present application more compact, which is conducive to the miniaturization of electronic equipment. .
  • the bracket is provided with a hollow portion, which reduces the mass of the bracket, that is, the photoelectric detection module is lighter.
  • the electronic device is a mobile electronic device (such as a bracelet, a watch)
  • the user's sense of weight is smaller, thus improving the User experience.
  • the hollow part includes a first hollow part and a second hollow part, the light emitter is located in the first hollow part, and the light detector is located in the second hollow part.
  • the light emitter is located in the first hollow part, and the light detector is located in the second hollow part, so that the light emitter and the light detector are located in different hollow areas.
  • This setting can limit the illumination range of the light emitter and reduce the illumination light of the light emitter.
  • the interference effect on the reflected light to be received by the light detector, or to prevent the light from the light transmitter from directly irradiating the light receiver, so that the light detector can accurately detect the reflected light, which is beneficial to calculating more accurate heart rate and blood pressure. Oxygen and other biological parameters to improve the user experience.
  • the second hollow part surrounds the first hollow part.
  • the arrangement of the second hollow part surrounding the first hollow part can make full use of the area of the hollow space of the bracket, making the structure of the photoelectric detection module more compact, saving production costs, and correspondingly, the electronic equipment is lighter , the user's sense of weight is smaller, improving the user's experience.
  • the second hollow part surrounds the first hollow part, so that the photodetector can also be arranged around the light emitter, increasing the acceptable range of the photodetection module for reflected light, making the photodetection module of the present application more applicable In more complex detection environments (for example, the lens of the electronic device is partially blocked by foreign objects, or the user's blood vessels move relative to the photoelectric detection module), the user's experience is improved.
  • the stent includes an inner ring member and an outer ring member.
  • the inner ring member is in a space enclosed by the outer ring member.
  • the inner ring member forms a first hollow portion.
  • the inner ring member and the outer ring member surround the space. Combined to form a second hollow part.
  • the inner ring When the inner ring is annular, it is easy to enclose and form the first hollow part.
  • the outer ring is also annular and the inner ring is in the space enclosed by the outer ring, it is also easy to enclose and form the third hollow part.
  • the structure of the bracket in this application is simpler and easier to manufacture, and the cost is lower.
  • the bracket further includes a connecting piece, the two ends of the connecting piece are respectively connected to the outer ring member and the inner ring piece, and the connecting piece, the outer ring piece and the inner ring piece together form a plurality of second hollow parts.
  • the inner ring is connected to the outer ring through a connecting piece.
  • the inner ring and the outer ring can be installed on the body at the same time, reducing the number of required positioning installation benchmarks and simplifying the installation process of the bracket and the body.
  • the structural strength of the bracket is greater, the connection reliability between the bracket and the body is higher, and the service life of the photoelectric detection module of the present application is improved.
  • multiple connectors can be provided to form a plurality of second hollow portions that can surround the first hollow portion, so that multiple light detectors can be installed, which can increase the acceptable range of reflected light and can also detect individual light. In the event of detector failure, the photoelectric detection module can continue to work, improving the reliability of the photoelectric detection module.
  • both the outer ring member and the inner ring member are circular.
  • both the outer ring member and the inner ring member are circular, so that the installation area of the bracket on the body is smaller, the structure is more compact, and the third hole opened on the bracket is The areas of the first hollow part and the second hollow part are maximized to reduce the weight of the bracket, which is beneficial to the lightweight of the photoelectric detection module, and the user's sense of load on the electronic device is smaller, improving the user experience.
  • the connecting piece is connected from the inner ring to the outer ring along the radial direction of the inner ring.
  • This setting allows the connector to connect the inner ring member and the outer ring member with the shortest length.
  • the weight of the bracket is smaller, which is conducive to the lightweight of the photoelectric detection module. The user feels less burden on the electronic device, which improves the user's use. experience.
  • the outer ring member is provided with a third hollow portion, and the body is also equipped with an electrode spring piece and a temperature sensor, and the electrode spring piece and the temperature sensor are located in the third hollow portion.
  • the outer ring is provided with a third hollow part, the electrode spring piece and the temperature sensor are located in the third hollow part, so that the electrode spring piece and the temperature sensor installed on the body can be closer to the photodetector, reducing the area of the body, and making the electrode spring piece and the temperature sensor
  • the sensor is in contact with the housing without interference from the bracket structure, thus making the photoelectric detection component of the present application more miniaturized.
  • the user feels less burden on the electronic device, which improves the user experience.
  • the miniaturization of the photoelectric detection component also helps It enables electronic devices to integrate more modules and provide users with more functions.
  • the bracket includes an inner ring member and a first frame, the inner ring member is enclosed to form a first hollow part, and the first frame is enclosed to form a second hollow part.
  • the inner ring is annular, it can be easily enclosed to form the first hollow part.
  • the first frame has a frame structure and can also be easily enclosed to form the second hollow part, making the structure of the bracket simpler and easier to manufacture. Therefore, the photoelectric detection module The production process of the group is more optimized and less expensive.
  • the inner ring is circular and/or the first frame is a sector frame.
  • the inner ring When the inner ring is circular, the area of the first hollow portion opened on the bracket is maximized, reducing the weight of the bracket, which is conducive to the lightweight of the photoelectric detection module. The user feels less burden on the electronic device and improves the user experience. usage experience.
  • the first frame is a sector-shaped frame, that is, the periphery of the frame is an arc, it occupies a smaller installation area on the body and the structure is more compact, which is beneficial to the lightweight of the photoelectric detection module, and the user feels less burden on the electronic device. Improve user experience.
  • the inner ring is circular and the first frame is a fan-shaped frame
  • the fan-shaped first frame can be arranged to closely fit the circular inner ring, making the structure more compact and more conducive to optoelectronics.
  • the lightweight detection module reduces the user's sense of weight on the electronic device, improving the user experience.
  • the inner ring is connected to the first frame.
  • the inner ring and the first frame can be installed on the body at the same time, reducing the number of required positioning and installation benchmarks and simplifying the installation process of the bracket and the body.
  • the structural strength of the bracket is greater, and the connection between the bracket and the body is Higher reliability, extending the service life of the photoelectric detection module.
  • the body is also equipped with an electrode spring and a temperature sensor, and the electrode spring and the temperature sensor are located in the space.
  • the spacing allows the electrode shrapnel and temperature sensor installed on the body to be closer to the light emitter, reducing the unnecessary area of the body and helping to reduce the weight of the photoelectric detection module.
  • the spacing allows the electrode spring piece and the temperature sensor to contact the housing without being interfered by the structure of the bracket, making the structure of the photoelectric detection module more compact. Therefore, the user feels less weight on the electronic device equipped with the photoelectric detection module, and the user experience is higher.
  • first hollow portion and the second hollow portion are alternately arranged on the bracket along the circumferential direction.
  • the first hollow portion and the second hollow portion are alternately arranged on the bracket.
  • the light irradiator is in the first hollow portion, that is, the light irradiator is also arranged on the body at intervals along the circumferential direction. Therefore, the illumination of the photoelectric detection module The range is larger and the light irradiating the user is more uniform, which is beneficial to improving the detection accuracy of the photoelectric detection module.
  • the photoelectric detection module since the photodetector is in the second hollow part, that is, the photodetector is also arranged on the body at intervals along the circumferential direction, the photoelectric detection module has a wider acceptable range for reflected light, making the photoelectric detection module more applicable. In more complex detection environments (for example, the lens of the electronic device is partially blocked by foreign objects, or the user's blood vessels move relative to the photoelectric detection module), the user's experience is improved.
  • the second hollow part is arranged opposite to both ends of the first hollow part.
  • the structure of the photoelectric detection module is relatively simplified and is suitable for use in electronic equipment with small installation space. It is also suitable for scenarios that do not have high requirements for the detection environment.
  • the electronic equipment is a handheld detector and the user can hold the electronic equipment. Aim at the position to be detected, that is, manually adjust the acceptable range of reflected light.
  • the bracket includes a second frame and a third frame, the second frame is enclosed to form a first hollow portion, and the third frame is enclosed to form a second hollow portion.
  • the second frame is a frame structure, which is simple and easy to make, and can easily be enclosed to form the first hollow portion.
  • the third frame is also a frame structure, which is simple and easy to make, and can easily be enclosed to form the second hollow portion.
  • the second and third frames are connected.
  • the second frame and the third frame are connected, on the one hand, the second frame and the third frame can be installed on the body at the same time, reducing the number of required positioning installation benchmarks and simplifying the installation process of the bracket and the body.
  • the structural strength of the bracket is greater, and the connection reliability between the bracket and the body is higher, which increases the service life of the photoelectric detection module of the present application.
  • a protrusion is provided on a side of the connection position of the second frame and the third frame away from the body.
  • the raised portion can further limit the irradiation angle range of the light emitted by the light emitter on the basis of the second frame and the third frame, and reduce the interference effect of the irradiation light of the light emitter on the reflected light to be received by the light detector, thereby making
  • the light detector can accurately detect changes in reflected light, which is helpful for calculating accurate biological parameters such as heart rate and blood oxygen, thus improving the user experience.
  • the second frame and the third frame are respectively installed with protective covers, and the protective covers are both abutted against the side walls of the raised portion.
  • protective covers are installed on the second frame and the third frame respectively.
  • the protective covers installed on the second frame are designed and produced according to different materials, structures, or sizes. and a protective cover installed on the third frame to optimize the performance of the photoelectric detection module of the present application.
  • the protective cover is in contact with the side wall of the raised part.
  • the raised part can be used as a positioning and installation reference for the protective cover to prevent the protective cover from deviating from the installation position relative to the bracket, which is beneficial to the photoelectric detection module of the present application.
  • the external dimensions of the group are more in line with the design standards.
  • the installation and connection area of the protective cover and the bracket can also be increased to make the connection between the protective cover and the bracket more reliable, thereby increasing the service life of the photoelectric detection module of this application. .
  • the stand includes magnetic components.
  • the photoelectric detection module or the electronic device including the photoelectric detection module can generate magnetic attraction with external metal objects or magnetic substances, so that the photoelectric detection module or the electronic device including the photoelectric detection module can stabilize It is grounded to a certain component, so there is no need for a more complicated connection structure, which simplifies the manufacturing process and also makes the photoelectric detection module or the electronic device including the photoelectric detection module more miniaturized.
  • the electronic device is a small mobile electronic device (such as a mobile phone, a bracelet, a watch, a tablet, a handheld detector), and the electronic device is attached to a wireless charger, since the bracket includes magnetic parts, the magnetic parts can be used with the wireless charging
  • the metal object or magnetic material built into the device generates magnetic attraction so that the electronic device will not move randomly relative to the wireless charger to ensure the stability and continuity of the charging process.
  • an adhesive layer is provided between the bracket and the body, and/or an adhesive layer is provided between the bracket and the protective cover.
  • bracket and the body When there is an adhesive layer between the bracket and the body, there is no need to set up an additional connection structure on the bracket and the body, which reduces the difficulty of the processing process of the bracket and the body. It is more convenient to use the adhesive layer to connect the bracket and the body, and the production process is more optimized and cost-effective. lower. Similarly, providing an adhesive layer between the bracket and the protective cover has the same effect, which will not be described again here. Depending on the materials of the body, bracket and protective cover, you can choose to provide an adhesive layer between the bracket and the body, or an adhesive layer between the bracket and the protective cover, or between the bracket and the body and between the bracket and the protective cover. There is an adhesive layer between the protective covers.
  • a step is provided on the side of the bracket away from the body, and the protective cover is installed on the step.
  • the bracket When the protective cover is installed on the steps of the bracket, on the one hand, the bracket can be closer to the body of the circuit board, and the photoelectric detection module is more compact, which is conducive to the lightweight of the photoelectric detection module. The user feels less weight on the electronic device, which improves the user's safety. Use experience.
  • the steps protect the edge of the protective cover. During the transportation of the photoelectric detection module, the steps prevent the edge of the protective cover from colliding with external foreign objects, reducing the risk of the protective cover failing.
  • the body is provided with a positioning portion, and the positioning portion is used to cooperate with the housing to limit the position of the body relative to the housing.
  • the positioning part is used to position and install the main body on the casing to improve the optical path accuracy of the photoelectric detection module of the present application, so that accurate biological parameters such as heart rate and blood oxygen can be calculated to improve the user experience.
  • a second aspect of this application provides an electronic device.
  • the electronic device includes a photoelectric detection module, a housing and a lens.
  • the housing is provided with a light-transmitting hole.
  • the photoelectric detection module is installed on one side of the light-transmitting hole located inside the housing.
  • the lens Installed on the side of the light-transmitting hole outside the housing.
  • Figure 1 is a schematic structural diagram of a PPG module with integrated bottom case assembly
  • Figure 2 is a schematic structural diagram of a PPG module with injection molding protection
  • Figure 3 is a schematic diagram of the cooperation between the housing and the lens in the electronic device provided by this application;
  • Figure 4 is a schematic diagram of the cooperation between the housing and the photoelectric detection module in the electronic device provided by this application;
  • Figure 5 is a schematic structural diagram of the housing in Figure 4.
  • Figure 6 is a schematic structural diagram of the photoelectric detection module provided by the present application in the first embodiment
  • Figure 7 is a cross-sectional view of the photoelectric detection module in Figure 6 along direction A;
  • Figure 8 is a schematic structural diagram of the photoelectric detection module in Figure 6, in which the protective cover is not shown;
  • Figure 9 is a schematic structural diagram of the first embodiment in Figure 6, in which there is no connection between the inner ring member and the outer ring member;
  • Figure 10 is a schematic structural diagram of the bracket in Figure 8.
  • Figure 11 is a cross-sectional view of the bracket in Figure 6 along direction A;
  • Figure 12 is a schematic structural diagram of the photoelectric detection module in Figure 6 from another perspective
  • Figure 13 is a schematic structural diagram of the electrode spring piece in Figure 12;
  • Figure 14 is a schematic structural diagram of the photoelectric detection module provided by the present application in the second embodiment.
  • Figure 15 is a cross-sectional view of the photoelectric detection module in Figure 14 along direction C;
  • Figure 16 is a schematic structural diagram of the photoelectric detection module in Figure 14, in which the protective cover is not shown;
  • Figure 17 is a schematic structural diagram of the bracket in Figure 16;
  • Figure 18 is a schematic structural diagram of the photoelectric detection module in Figure 16 from another perspective
  • Figure 19 is a schematic structural diagram of the photoelectric detection module provided by this application in the third embodiment.
  • Figure 20 is a partially enlarged schematic diagram of part B in Figure 7;
  • Figure 21 is a partially enlarged schematic diagram of part D in Figure 15;
  • Figure 22 is a schematic structural diagram of the photoelectric detection module provided by this application in the fourth embodiment.
  • Figure 23 is a cross-sectional view of the photoelectric detection module in Figure 22 along the E direction;
  • Figure 24 is a schematic structural diagram of the photoelectric detection module in Figure 22, in which the protective cover is not shown;
  • Figure 25 is a schematic structural diagram of the bracket in Figure 24;
  • Figure 26 is a schematic structural diagram of the photoelectric detection module in Figure 22 from another perspective
  • Figure 27 is a rear view of the photoelectric detection module in Figure 8.
  • Figure 28 is a schematic diagram of the dimensions of the photoelectric detection module in Figure 7;
  • Figure 29 is a schematic diagram of the dimensions of the bracket and photodetector in Figure 25.
  • connection can be a fixed connection, a detachable connection, or an integral connection.
  • Connection, or electrical connection may be direct or indirect through an intermediary.
  • the first is the assembly method of the integrated bottom case as shown in Figure 1, that is, the circuit board 3' and the bottom case 20' are integrated and assembled.
  • the bottom case 20' is equipped with a large lens 30' and a Fresnel lens film 40' to protect the light emitting diode 31', the photodetector 32' and the electrical connection wire 70'.
  • a light-blocking strip 50' is provided between the Fresnel lens film 40' and the circuit board 3'.
  • a foam 60' is also provided between the light-blocking strip 50' and the Fresnel lens film 40'.
  • the circuit board 3 An auxiliary electrical component 6' is also provided on the side away from the bottom case 20'.
  • the PPG module shown in Figure 1 has high requirements for assembly and processing. Otherwise, the optical path accuracy of the PPG module will be easily reduced and the detection performance of the PPG module will be deteriorated. Therefore, the processing and manufacturing are more complicated.
  • the second method is the injection molding protection method shown in Figure 2.
  • Plastic 80' is formed on the circuit board 3' by injection molding and packaging, and the plastic 80' is used to protect the light-emitting diode 31', the photodetector 32' and the electrical connecting wire 70. 'To protect.
  • an auxiliary electrical component 6' is also provided, and the auxiliary electrical component 6' is protected by an electromagnetic shielding cover 5'.
  • the PPG module shown in Figure 2 can achieve decoupling processing of the circuit board 3' and the bottom case 20', the injection molding process has relatively high requirements for production and equipment.
  • the plastic 80' is not suitable for the light-emitting diode 31' and photoelectric
  • the detector 32' also has the problem of light loss, which will deteriorate the detection performance of the PPG module.
  • the electronic device can be a fixed electronic device or a mobile electronic device.
  • the mobile electronic device can be a mobile phone, a tablet, a sports bracelet, a watch or a handheld detector. etc., used in the field of health detection technology, such as detecting changes in human blood flow and calculating the user's heart rate, blood oxygen and other biological parameters, so that users can understand their own health status.
  • the electronic device includes a photoelectric detection module.
  • the electronic device also includes a housing 20 and a lens 30 .
  • the lens 30 is installed on the housing 20 . As shown in FIG.
  • the housing 20 may be provided with a light-transmitting hole 20 a, and the lens 30 is installed on a side of the light-transmitting hole 20 a located outside the housing 20 .
  • the photoelectric detection module 10 is installed on the side of the light-transmitting hole 20 a located inside the housing 20 .
  • the photoelectric detection module 10 is inside the housing 20.
  • the housing 20 and the lens 30 are used to protect the photoelectric detection module 10 and prevent the photoelectric detection module 10 from being exposed to foreign objects outside the external electronic equipment. Contamination or damage, the photoelectric detection module 10 emits light to the outside of the housing 20 through the lens 30 installed in the light-transmitting hole 20a, and then receives the reflected light from the outside of the housing 20 through the lens 30, detects the change of the reflected light, thereby reflecting the detected light. Changes in the state of the detected object.
  • the photoelectric detection module 10 in the embodiment of the present application also includes protective measures that can protect the internal electrical components.
  • the housing 20 and the lens 30 are only used as the first line of protection for the internal electrical components of the photoelectric detection module 10. Therefore, the photoelectric detection module 10
  • the detection module 10 and the housing 20 can be decoupled and processed, and the specific technical details will be introduced later.
  • the housing 20 shown in FIGS. 3-5 may be a part of the housing of the electronic device.
  • the electronic device of the embodiment of the present application can also be applied to other scenarios where fluid changes affect light reflection, such as detecting the flow rate of liquid flowing inside a pipeline, detecting the density of gas inside a closed container, and other scenarios.
  • the photoelectric detection module 10 includes a protective cover 1, a bracket 2 and a circuit board 3.
  • the circuit board 3 includes a body 3a.
  • the body 3a is equipped with a light emitter 31 and a light detector 32.
  • the bracket 2 One side is installed on the main body 3a, and the protective cover 1 is installed on the side of the bracket 2 facing away from the main body 3a.
  • the main body 3a, the bracket 2 and the protective cover 1 form a cavity 4, and the light emitter 31 and the light detector 32 are both located in the cavity 4.
  • the body 3a of the circuit board 3 serves as the installation carrier for the light emitter 31 and the light detector 32.
  • the light emitter 31 and the light detector 32 are electrically connected to the body 3a respectively.
  • the light emitter 31 irradiates light to the outside of the photoelectric detection module 10, and the light detector 32 receives the reflected light.
  • the light detector 32 receives the reflected light.
  • the light emitted by the light emitter 31 is irradiated to the user through the protective cover 1 , and the reflected light is received by the light detector 32 through the protective cover 1 .
  • the body 3a, the bracket 2 and the protective cover 1 are enclosed to form a cavity 4, that is, a closed space is formed.
  • the cavity 4 can protect the light emitter 31 and the light detector.
  • the detector 32 is not interfered with and damaged by external foreign objects, so that the light emitter 31 and the light detector 32 work in a normal state, thereby ensuring the working reliability of the photoelectric detection module 10 .
  • the embodiment of the present application uses the body 3a, the bracket 2 and the protective cover 1 to form a cavity 4 that can protect the light emitter 31 and the light detector 32, so that for The protection of the light emitter 31 and the light detector 32 does not depend on the housing 20, that is, the photoelectric detection module 10 and the housing 20 can be decoupled and manufactured, and the required processing technology is less difficult and does not require high assembly accuracy.
  • This makes the production process more optimized and reduces production costs.
  • the process difficulty of enclosing the body 3a, the bracket 2 and the protective cover 1 to form the cavity 4 is also less difficult than the injection molding process.
  • the injection molding protection method requires that the light emitter 31 and the light
  • the packaging process is precisely controlled on the surface of the detector 32 to meet optical performance requirements such as light transmittance and light loss. Therefore, the manufacturing process of the injection molding protection method is relatively complicated and costly.
  • pre-made products can be selected.
  • the protective cover 1 can be directly installed on the bracket 2. Therefore, the manufacturing process of the photoelectric detection module 10 in the embodiment of the present application is more optimized and the cost is lower.
  • the protective cover 1 can be made of a material with a higher light transmittance than plastic, and the light loss is smaller, which can improve the detection accuracy and accurately reflect the user's heart rate, blood oxygen and other biological parameters, thereby improving the user's experience.
  • the protective cover 1 can be made of a material with a light transmittance of at least greater than 90%, such as polyethylene terephthalate (PET) or glass.
  • PET polyethylene terephthalate
  • a filter film can also be plated on the protective cover 1 so that light of a specific spectrum can pass through the protective cover 1, thereby improving the detection accuracy of the photoelectric detection module 10 in the embodiment of the present application, or a Fresnel film can be used.
  • the protective cover 1 is made of a piece of film.
  • One side of the Fresnel diaphragm is a smooth surface, and concentric circles from small to large are burned on the other side.
  • the Fresnel diaphragm can keep the brightness of the light passing through the protective cover 1 at different positions uniform.
  • the light detector 32 can accurately detect changes in reflected light, thereby obtaining more accurate biological parameters such as heart rate and blood oxygen, thereby improving the user experience.
  • the bracket 2 includes a hollow portion 21 located in the cavity 4 .
  • the light emitter 31 and the light detector 32 are both located in the hollow portion 21 .
  • the hollow portion 21 prevents light from being obstructed by the bracket 2 located between the body 3a and the protective cover 1, so that the light emitted by the light installed on the body 3a
  • the light emitted by the detector 31 can be irradiated to the protective cover 1.
  • the light is irradiated to the user through the light-transmitting protective cover 1, and the reflected light is received by the light detector 32 installed on the body 3a along the opposite path.
  • the light emitter 31 and the light detector 32 are both located in the hollow part 21, so that the distance between the body 3a and the protective cover 1 is closer, thereby making the photoelectric detection module 10 of the embodiment of the present application
  • the structure is more compact, which is beneficial to the miniaturization of electronic equipment.
  • the bracket 2 of this embodiment is provided with a hollow portion 21, so that the mass of the bracket 2 is reduced, that is, the photoelectric detection module 10 is made lighter.
  • the electronic device is a mobile electronic device (such as a bracelet, a watch), the user The weight-bearing feeling is smaller, thus improving the user experience.
  • the bracket 2 may include a hollow part 21 , and the light emitter 31 and the light detector 32 may both be located in the same hollow part 21 .
  • the bracket 2 may include two or more hollow parts 21 , and the light emitter 31 and the light detector 32 may be located in different hollow parts 21 .
  • the hollow part 21 includes a first hollow part 211 and a second hollow part 212 .
  • the light emitter 31 is located in the first hollow part 211
  • the light detector 32 is located in the second hollow part.
  • the light emitter 31 is located in the first hollow part 211
  • the light detector 32 is located in the second hollow part 212 , so that the light emitter 31 and the light detector 32 are located in different hollow areas.
  • this setting can limit the irradiation range of the light emitter 31, reduce the interference effect of the irradiation light of the light emitter 31 on the reflected light to be received by the photodetector 32, or prevent the irradiation light of the light emitter 31 from directly irradiating the light receiver.
  • the detector 32 enables the light detector 32 to accurately detect changes in reflected light, which is beneficial to calculating more accurate biological parameters such as heart rate and blood oxygen, and improves the user experience.
  • first hollow parts 211 There may be one or more first hollow parts 211 , and there may also be one or more second hollow parts 212 .
  • the second hollow portion 212 surrounds the first hollow portion 211 .
  • the arrangement of the second hollow portion 212 surrounding the first hollow portion 211 can make full use of the area of the bracket 2 that can create a hollow space, so that the photoelectric detection module 10's structure is more compact, saving production costs.
  • electronic devices are lighter, users feel less burdened, and improve the user experience.
  • the second hollow part 212 surrounds the first hollow part 211, so that the photodetector 32 can also be disposed around the light emitter 31, increasing the acceptable range of the photodetection module 10 with respect to reflected light, so that
  • the photoelectric detection module 10 of the embodiment of the present application is more suitable for use in more complex detection environments (for example, the lens 30 of the electronic device is partially blocked by foreign objects, or the user's blood vessels move relative to the photoelectric detection module 10), thereby improving the user's use experience.
  • the second hollow part 212 may completely surround the first hollow part 211.
  • the second hollow portion 212 can also partially surround the first hollow portion 211 .
  • first hollow part 211 and the second hollow part 212 may be triangular, rectangular, hexagonal, or annular.
  • the center of the first hollow part 211 may be the center of the bracket 2 , and the second hollow part 212 may be relative to the third hollow part 211 .
  • a central circumferential array of hollow portions 211 is provided.
  • the bracket 2 includes an inner ring 22 and an outer ring 23.
  • the inner ring 22 is in a space enclosed by the outer ring 23.
  • the inner ring 22 forms a first hollow portion 211.
  • the inner ring member 22 and the outer ring member 23 enclose to form a second hollow portion 212 .
  • the inner ring member 22 and the outer ring member 23 may be circular or elliptical ring-shaped members.
  • the inner ring member 22 may not be connected to the outer ring member 23 .
  • the inner ring member 22 can also be connected to the outer ring member 23 .
  • the bracket 2 also includes a connecting piece 24.
  • the two ends of the connecting piece 24 are connected to the outer ring 23 and the inner ring 22 respectively.
  • the connecting piece 24, the outer ring 23 and the inner ring 22 are connected together.
  • a plurality of second hollow portions 212 are formed.
  • the inner ring member 22 is connected to the outer ring member 23 through the connecting member 24.
  • the inner ring member 22 and the outer ring member 23 can be installed on the body 3a as shown in Figure 8 at the same time, reducing the required number of steps. Position the installation reference quantity to simplify the installation process of the bracket 2 and the body 3a.
  • the structural strength of the bracket 2 is greater, the connection reliability between the bracket 2 and the body 3a is higher, and the service life of the photoelectric detection module 10 of the embodiment of the present application is improved.
  • the connecting piece 24 , the outer ring piece 23 and the inner ring piece 22 are part of the bracket 2 , and the connecting piece 24 , the outer ring piece 23 and the inner ring piece 22 can all abut against the protective cover 1 to further limit the light emitter 31
  • the irradiation range and the irradiation light of the light emitter 31 are prevented from directly irradiating the light receiver 32, so that the light detector 32 can accurately detect changes in reflected light, which is beneficial to calculating more accurate biological parameters such as heart rate and blood oxygen, and improves User experience.
  • multiple connectors 24 can be provided to form multiple second hollow portions 212 that can surround the first hollow portion 211 , so that multiple photodetectors 32 can be installed, which can increase the reflection efficiency.
  • the acceptable range of light also allows the photoelectric detection module 10 to continue to work even if individual photodetectors 32 fail, thereby improving the reliability of the photoelectric detection module 10 .
  • connection between the connecting member 24, the outer ring member 23 and the inner ring member 22 may be detachable or integrally formed.
  • both the outer ring member 23 and the inner ring member 22 are circular.
  • both the outer ring member 23 and the inner ring member 22 are circular, so that the installation area of the bracket 2 on the body 3a is smaller, and the structure It is more compact, and maximizes the area of the first hollow part 211 and the second hollow part 212 opened on the bracket 2, reducing the weight of the bracket 2, which is conducive to the lightweight of the photoelectric detection module 10, and the user's use of electronic equipment.
  • the weight-bearing feeling is smaller, which improves the user's experience.
  • the connecting member 24 is connected from the inner ring member 22 to the outer ring member 23 .
  • the arrangement of this embodiment allows the connecting member 24 to connect the inner ring member 22 and the outer ring member 23 with the shortest length.
  • the weight of the bracket 2 is small, which is beneficial to the lightweight of the photoelectric detection module 10 and reduces the user's load on the electronic equipment. It feels smaller and improves the user experience.
  • the outer ring 23 is provided with a third hollow portion 231 , and the body 3 a is also equipped with an electrode elastic piece 33 and a temperature sensor 34 , and the electrode elastic piece 33 and the temperature sensor 34 are located in the third hollow portion 231 .
  • the outer ring 23 is provided with a third hollow portion 231 , the electrode elastic piece 33 and the temperature sensor 34 are located in the third hollow portion 231 , so that the electrode elastic piece 33 and the temperature sensor 34 installed on the body 3 a
  • the temperature sensor 34 can be closer to the photodetector 32, reducing the area of the body 3a, and allowing the electrode elastic piece 33 and the temperature sensor 34 to contact the housing 20 without interference from the structure of the bracket 2, thereby enabling photoelectric detection in the embodiment of the present application.
  • the component 10 is more miniaturized, and the user feels less burden on the electronic device, which improves the user's experience.
  • the miniaturization of the photoelectric detection component 10 also helps the electronic device integrate more modules and provide the user with more functions.
  • the electrode elastic piece 33 is used to contact the housing 20 or the lens 30.
  • the electrode elastic piece 33 can detect the user's skin surface. It detects the ECG signal generated by the heartbeat to detect the ECG or heart rate. Or the electrode spring piece 33 is used to send or/and receive electrical signals to the user's skin, and these electrical signals are used to monitor physiological parameters such as body composition (eg, body fat, muscle content) of the human body.
  • the temperature sensor 34 is also used to contact the housing 20 or the lens 30. When the housing 20 or the lens 30 is in contact with the user's skin, the temperature sensor 34 is used to measure the surface temperature of the user's skin. Thermal conductive glue is coated on the contact surface between the temperature sensor 34 and the housing 20 to transmit the temperature of the housing 20 or the lens 30 to the temperature sensor 34 .
  • the embodiment of the present application does not limit the number of the third hollow portion 231.
  • the electrode spring piece 33 and the temperature sensor 34 can be in the same third hollow portion 231, or the electrode spring piece 33 and the temperature sensor 34 can be in different third hollow portions. Within 231.
  • the body 3a can also be equipped with other electronic components, and other electronic components can also be located in the third hollow portion 231.
  • a through hole 331 is opened in the electrode elastic piece 33 .
  • the through hole 331 can reduce the internal extrusion stress of the electrode elastic piece 33 and improve the performance of the electrode elastic piece 33 .
  • the service life of the electrode elastic piece 33 can, on the other hand, reduce the extrusion stress of the elastic piece 33 on the bottom case 20 and improve the service life of the electronic device.
  • the body 3 a is provided with a positioning portion 35 , and the positioning portion 35 is used to cooperate with the housing 20 to limit the position of the body 3 a relative to the housing 20 .
  • the positioning part 35 is used to position and install the main body 3a on the casing 20 to improve the optical path accuracy of the photoelectric detection module 10 in the embodiment of the present application, so as to be able to calculate accurate biological parameters such as heart rate and blood oxygen, and improve User experience.
  • FIGS. 14 to 16 Please refer to FIGS. 14 to 16 .
  • This embodiment also includes the arrangement of the second hollow portion 212 surrounding the first hollow portion 211 .
  • the bracket 2 includes an inner ring member 22 and a first frame 25 .
  • the inner ring member 22 is enclosed to form a first hollow portion 211
  • the first frame 25 is enclosed to form a second hollow portion 212 .
  • the inner ring 22 is annular, it can be easily enclosed to form the first hollow part 211.
  • the first frame 25 is a frame structure, and it is also easy to enclose the second hollow part 212, so that the structure of the bracket 2 It is simpler and easier to manufacture, so the manufacturing process of the photoelectric detection module 10 is more optimized and the cost is lower.
  • the inner ring member 22 is circular, and/or the first frame 25 is a sector-shaped frame.
  • the area of the first hollow portion 211 opened on the bracket 2 is maximized, which reduces the weight of the bracket 2 and is conducive to the lightweight of the photoelectric detection module 10. Users can The weight of the electronic device is less, which improves the user experience.
  • the first frame 25 is a sector-shaped frame, that is, the periphery of the frame is an arc, it occupies a smaller installation area on the body 3a and the structure is more compact, which is beneficial to the lightweight of the photoelectric detection module 10 and reduces the user's sense of load on the electronic device. Smaller, improves user experience.
  • the inner ring member 22 is circular and the first frame 25 is a fan-shaped frame, not only the above effects are achieved at the same time, but also the fan-shaped first frame 25 can be placed closely in close contact with the circular inner ring member 22, making the structure more compact. It is more conducive to the lightweight of the photoelectric detection module 10, and the user has less burden on the electronic device, thereby improving the user experience.
  • the inner ring member 22 can be connected to the first frame 25 .
  • the inner ring member 22 is connected to the first frame 25 .
  • the inner ring 22 and the first frame 25 can be installed on the body 3a at the same time, thereby reducing the number of required positioning and installation benchmarks and simplifying the installation process of the bracket 2 and the body 3a.
  • the bracket 2 The structural strength is greater, the connection reliability between the bracket 2 and the body 3a is higher, and the service life of the photoelectric detection module 10 is improved.
  • the embodiment of the present application does not limit the number of first frames 25.
  • the bracket 2 may include four first frames 25 spaced apart.
  • the body 3 a is also equipped with an electrode spring 33 and a temperature sensor 34 , and the electrode spring 33 and the temperature sensor 34 are located in the separation space 251 .
  • the spacing space 251 enables the electrode elastic piece 33 and the temperature sensor 34 installed on the body 3a to be closer to the light emitter 31, reducing the unnecessary area of the body 3a, which is beneficial to the lightweight of the photodetection module 10.
  • the spacing space 251 allows the electrode elastic piece 33 and the temperature sensor 34 to contact the housing 20 without being interfered by the structure of the bracket 2, making the structure of the photoelectric detection module 10 more compact. Therefore, the user feels less weight on the electronic device equipped with the photoelectric detection module 10, and the user's usage experience is higher.
  • the electrode elastic piece 33 and the temperature sensor 34 can be in different separation spaces 251 .
  • the electrode elastic piece 33 and the temperature sensor 34 can also be in the same separation space 251
  • the body 3a can also be installed with other electronic components, and other electronic components can also be located in the separation space 251, such as the circuit for driving the light emitter 31, and the receiving circuit and processing circuit for the detection signal of the light detector 32.
  • the first hollow portion 211 is arranged around the second hollow portion 212, and the first hollow portion 211 is a fan-shaped frame, and the first hollow portion 211 is a fan-shaped frame.
  • the two hollow parts 212 are ring-shaped parts, the light emitter 31 is located in the first hollow part 211 , and the light detector 32 is located in the second hollow part 212 .
  • the first hollow portions 211 and the second hollow portions 212 are staggeredly arranged on the bracket 2 .
  • the first hollow portions 211 and the second hollow portions 212 are alternately arranged on the bracket 2 along the circumferential direction, and the light illuminators 31 are inside the first hollow portions 211 , that is, the light illuminators 31 are also arranged at intervals along the circumferential direction.
  • the irradiation range of the photoelectric detection module 10 in this embodiment is larger, and the light irradiated on the user is more uniform, which is beneficial to improving the detection accuracy of the photoelectric detection module 10.
  • the photodetector 32 is in the second hollow part 212, that is, the photodetector 32 is also arranged on the body 3a at intervals along the circumferential direction.
  • the photoelectric detection module 10 in this embodiment has an acceptable range for reflected light. Larger, making the photoelectric detection module 10 in this embodiment more suitable for more complex detection environments (for example, the lens 30 of the electronic device is partially blocked by foreign objects, or the user's blood vessels move relative to the photoelectric detection module 10), Improve user experience.
  • the bracket 2 may be provided with eight hollow portions 21 along the circumferential direction, and four first hollow portions 211 and four second hollow portions 212 are arranged in a staggered manner.
  • the bracket 2 may also include a fourth hollow part 213 , and the first hollow part 211 and the second hollow part 212 are both arranged around the fourth hollow part 213 .
  • the light emitter 31 may be placed in the fourth hollow part 213 , or the light detector 32 may be placed in the fourth hollow part 213 .
  • the bracket 2 when the protective cover 1 is installed on the step 29 of the bracket 2, on the one hand, the bracket 2 can be closer to the body 3a of the circuit board 3, and the photoelectric detection module 10 is more compact, which is beneficial to the lightweight of the photoelectric detection module 10. The user feels less weight on the electronic device, which improves the user experience.
  • the step 29 protects the edge of the protective cover 1. During the transportation of the photoelectric detection module 10, the step 29 prevents the edge of the protective cover 1 from colliding with external foreign objects, thereby reducing the risk of the protective effect of the protective cover 1 failing. .
  • the second hollow part 212 may be disposed opposite to both ends of the first hollow part 211 .
  • the structure of the photoelectric detection module 10 in this embodiment is relatively simplified and is suitable for use in electronic devices with small installation space. It is also suitable for scenarios that do not have high requirements for the detection environment.
  • the electronic device is a handheld detector and the user You can hold the electronic device and align it with the position to be detected, that is, manually adjust the acceptable range of reflected light.
  • first hollow portion 211 can also be disposed oppositely at both ends of the second hollow portion 212 , that is, the light emitter 31 is located at both ends of the photodetector 32 .
  • This embodiment is not shown in the figure.
  • three hollow portions 21 can also be provided on the bracket 2 along a straight line.
  • One of the hollow portions 21 can be selected as the first hollow portion 211 for placing the light emitter 31
  • the remaining two hollow portions 21 can be used as the second hollow portions 212 , used to place the light detector 32
  • one of the hollow parts 21 is used as the second hollow part 212, used to place the light detector 32
  • the remaining two hollow parts 21 are used as the first hollow part 211, used to place the light emitter. 31.
  • the bracket 2 includes a second frame 26 and a third frame 27 .
  • the second frame 26 encloses to form a first hollow part 211
  • the third frame 27 encloses to form a second hollow part 212 .
  • the second frame 26 is a frame structure, which is simple and easy to manufacture, and can easily be enclosed to form the first hollow portion 211.
  • the third frame 27 is also a frame structure, which is simple and easy to manufacture, and is easy to Enclosed to form a second hollow portion 212 .
  • the dotted and dashed lines in FIG. 25 are only used to represent the ranges of the second frame 26 and the third frame 27 .
  • the second frame 26 may be connected to the third frame 27, or the second frame 26 may not be connected to the third frame 27.
  • FIG. 25 where the second frame 26 and the third frame 27 are connected.
  • the second frame 26 and the third frame 27 are connected.
  • the second frame 26 and the third frame 27 can be installed on the body 3a at the same time, which reduces the number of positioning and installation benchmarks and simplifies the connection between the bracket 2 and the body 3a. Installation process.
  • the structural strength of the bracket 2 is greater, and the connection reliability between the bracket 2 and the body 3a is higher, which increases the service life of the photoelectric detection module 10 in the embodiment of the present application.
  • connection method between the second frame 26 and the third frame 27 may be detachable connection or integral connection.
  • a protruding portion 28 is provided on the side of the connection position of the second frame 26 and the third frame 27 away from the body 3 a.
  • the protruding portion 28 can further limit the irradiation angle range of the light emitted by the light emitter 31 on the basis of the second frame 26 and the third frame 27, thereby reducing the irradiation light of the light emitter 31.
  • the interference effect on the reflected light to be received by the light detector 32 enables the light detector 32 to accurately detect changes in the reflected light, which is beneficial to calculating accurate biological parameters such as heart rate and blood oxygen, thereby improving the user experience.
  • the second frame 26 and the third frame 27 are respectively installed with protective covers 1 , and the protective covers 1 are both in contact with the side walls of the protruding portion 28 .
  • the light transmitter 31 is installed in the space enclosed by the second frame 26 and the light receiver 32 is installed in the space enclosed by the third frame 27, the reflected light to be received by the light receiver 32 is different from that of the light receiver 32.
  • the irradiation light emitted by the light emitter 31 has different optical parameter requirements such as light intensity, spectrum, transmittance, etc. Therefore, protective covers 1 are installed on the second frame 26 and the third frame 27 respectively, and according to different materials, The protective cover 1 installed on the second frame 26 and the protective cover 1 installed on the third frame 27 are designed and manufactured in structure or size to optimize the performance of the photoelectric detection module 10 in the embodiment of the present application. In addition, the protective cover 1 is in contact with the side wall of the raised portion 28.
  • the raised portion 28 can be used as a positioning and installation reference for the protective cover 1, preventing the protective cover 1 from deviating from the installation position relative to the bracket 2, which is beneficial to
  • the external dimensions of the photoelectric detection module 10 in the embodiment of the present application are more in line with the design standards.
  • the installation and connection area between the protective cover 1 and the bracket 2 can also be increased to make the connection between the protective cover 1 and the bracket 2 more reliable. , thereby improving the service life of the photoelectric detection module 10 in the embodiment of the present application.
  • the protective cover 1 can also be used as a whole to cover the first hollow portion 211 and the second hollow portion 212 at the same time (this embodiment is not shown in the figure).
  • the bracket 2 includes magnetic parts.
  • the photoelectric detection module 10 or the electronic device including the photoelectric detection module 10 in the embodiment of the present application can generate magnetic attraction with external metal objects or magnetic substances, so that the photoelectric detection module 10 or The electronic device including the photoelectric detection module 10 can be stably installed to a certain component, so there is no need for a more complicated connection structure, which simplifies the manufacturing process and also makes the photoelectric detection module 10 or the electronic device including the photoelectric detection module 10 more compact. .
  • the electronic device when the electronic device is a small mobile electronic device (such as a mobile phone, a bracelet, a watch, a tablet, a handheld detector), and the electronic device is attached to a wireless charger, since the bracket 2 includes a magnetic component, the magnetic component can be used Due to the magnetic attraction generated by the metal object or magnetic material built into the wireless charger, the electronic device will not move randomly relative to the wireless charger to ensure the stability and continuity of the charging process.
  • a small mobile electronic device such as a mobile phone, a bracelet, a watch, a tablet, a handheld detector
  • the inner ring member 22 can be made of magnetic material, and the outer ring member 23 can also be made of magnetic material.
  • the inner ring 22 can be made of magnetic material
  • the first frame 25 can also be made of magnetic material.
  • the second frame 26 can be made of magnetic material
  • the third frame 27 can also be made of magnetic material.
  • An adhesive layer 5 is provided between the bracket 2 and the body 3a, and/or an adhesive layer is provided between the bracket 2 and the protective cover 1. 5.
  • the adhesive layer 5 is provided between the bracket 2 and the body 3a, there is no need to provide an additional connection structure on the bracket 2 and the body 3a, which reduces the difficulty of the processing technology of the bracket 2 and the body 3a.
  • the adhesive layer 5 is used to connect the bracket 2 and the body 3a.
  • the method of using the bracket 2 and the body 3a is more convenient, the manufacturing process is more optimized and the cost is lower.
  • the effect of providing the adhesive layer 5 between the bracket 2 and the protective cover 1 is the same, and will not be described again here.
  • bracket 2 and the protective cover 1 you can choose to provide an adhesive layer 5 between the bracket 2 and the main body 3a, or an adhesive layer 5 between the bracket 2 and the protective cover 1, or an adhesive layer 5 between the bracket 2 and the protective cover 1.
  • An adhesive layer 5 is provided between the bracket 2 and the body 3a and between the bracket 2 and the protective cover 1.
  • the adhesive layer 5 may be glue, tape, or other substances with adhesive and fixing properties.
  • different adhesive layers 5 can be provided on the inner ring member 22 and the outer ring member 23 respectively.
  • the adhesive layer 5 of the inner ring member 22 is annular, and the adhesive layer 5 of the outer ring member 23 is also annular.
  • the material of the bracket 2 may be plastic, and a hot melt process may be used to melt the surface of the bracket 2 to form an adhesive layer 5 between the bracket 2 and the protective cover 1 and between the bracket 2 and the body 3a.
  • the material of the bracket 2 can also be metal.
  • the bracket 2 can be fixedly connected to the body 3a of the circuit board 3 by welding, and then the bracket 2 can be fixedly connected to the protective cover 1 with glue.
  • the light emitter 31 can be a light emitting diode (LED)
  • the light detector 32 can be a photodiode (Photodiode Detector, PD)
  • both can be a die.
  • Both the detector 31 and the photodetector 32 are electrically connected to the main body 3a (PCB board) of the circuit board 3 through gold wires (Bonding wires, not shown in the figure).
  • FIG. 27 Other electrical components 36 and a shielding cover 6 can also be installed on the side of the body 3a of the circuit board 3 away from the bracket 2.
  • the shielding cover 6 and the body 3a form a closed space.
  • some electrical components 36 may be in the enclosed space, and the shielding cover 6 is used to prevent electromagnetic interference to the electrical components 36 from the outside.
  • the electrical components 36 may include components such as analog front end (Analog Front End, AFE), capacitors, inductors, pressure pads or interface pins.
  • AFE Analog Front End
  • capacitors capacitors
  • inductors pressure pads or interface pins.
  • the height H3a of the body 3a is 0.4mm
  • the height H2 of the bracket 2 is 0.6mm
  • the height H1 of the protective cover 1 is 0.15mm
  • the protective cover 1 The height H4 between the body 3a and the body 3a is 0.35mm
  • the height H31 of the light emitter 31 is 0.15mm-0.2mm
  • the height H32 of the light detector 32 is 0.15mm
  • the height H6 of the shielding cover 6 is 1mm.
  • the height dimensions of the photodetection module 10 of the second embodiment may be the same as or similar to those of the first embodiment. Among them, when there is no electrical component 36 on the side of the body 3a away from the bracket 2 in the second embodiment, the height H3a of the body 3a in the photodetection module 10 is 0.4mm, and the height H2 of the bracket 2 is 0.6mm.
  • the total height H10 of the photoelectric detection module 10 of the fourth embodiment is 1mm, the height H3a of the body 3a is 0.4mm, the length L2 of the bracket 2 is 14.8mm, and the width of the bracket 2 W2 is 5.8mm, the width W211 of the first hollow part 211 is 4.4mm, the width W212 of the second hollow part 212 is 3.8mm, the length L32 of the photodetector 32 is 3mm, and the width W32 of the photodetector 32 is 3mm.
  • the length L32 of the photodetector 32 is 3 mm, and the width W32 of the photodetector 32 is 2 mm.
  • the assembly method of the photoelectric detection module 10 in the embodiment of the present application is divided into the following steps:
  • Step (1) Use surface mounting technology (SMT chip technology) to install electrical components 36 (chips, resistors, capacitors, electrode springs 33, temperature sensors 34, etc.) on the body 3a of the circuit board 3.
  • electrical components 36 chips, resistors, capacitors, electrode springs 33, temperature sensors 34, etc.
  • Step (2) When the bracket 2 is made of metal, SMT chip technology is also used to install the bracket 2 to the body 3a of the circuit board 3; when the bracket 2 is made of non-metal material, use the adhesive layer 5 (glue or light-shielding tape) ) Bond the bracket 2 to the body 3a of the circuit board 3.
  • SMT chip technology is also used to install the bracket 2 to the body 3a of the circuit board 3; when the bracket 2 is made of non-metal material, use the adhesive layer 5 (glue or light-shielding tape) ) Bond the bracket 2 to the body 3a of the circuit board 3.
  • Step (3) Use the Die Bonding process to mount the bare chips of the light emitter 31 and the light detector 32 onto the body 3a of the circuit board 3, and then use the Wiring bonding process to coat the body 3a with gold. wire, so that the gold wire is electrically connected to the light emitter 31 and the light detector 32.
  • Step (4) Use the adhesive layer 5 (glue or light-shielding tape) to bond the protective cover 1 to the bracket 2.
  • step (1) and step (2) can be interchanged, or the order of step (2) and step (3) can be interchanged.

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Abstract

本申请提供一种光电检测模组及电子设备，光电检测模组包括保护罩、支架和电路板。电路板包括本体，本体安装有光发射器和光探测器，支架的一侧安装于本体，保护罩安装于支架背离本体的一侧，本体、支架和保护罩围合形成容腔，光发射器和光探测器均位于容腔内。容腔能够保护光发射器和光探测器不受外部异物的干扰和损害，以使光发射器和光探测器在正常状态下工作，从而保证光电检测模组的工作可靠性，本申请的光电检测模组及电子设备的制作过程更加优化。

Description

光电检测模组及电子设备 技术领域
本申请涉及健康检测技术领域，尤其涉及一种光电检测模组及电子设备。
 背景技术
现今人们对个人身体健康越来越关注，个人健康检测设备的应用越来越广泛，其中以运动穿戴产品最受用户青睐。运动穿戴产品能够检测用户的心率、血氧等生物参数，使用户了解自身身体情况。运动穿戴产品通常利用光体积变化描记图法(Photoplethysmography,PPG)检测活体组织血液容积变化，基本原理是利用光发射器通过向皮肤表面照射光束，每次心跳引起的血管的收缩和扩张(即血容积的变化)都会影响光的透射(例如在透射PPG中，通过指尖的光线)或是光的反射(例如在反射PPG中，来自手腕表面附近的光线)，利用光探测器能够检测投射光或反射光的变化，通过将光的变化转化为电信号，从而反映血液流动特点。
现有技术中运动穿戴产品中能够实现检测血液状态的模组通常为PPG模组，为了使PPG模组能够满足用户所需的检测精度，需要较高的组装加工要求较高，导致制作过程复杂。
申请内容
本申请提供了一种光电检测模组及电子设备，相比现有技术，本申请的光电检测模组及电子设备的制作过程更加优化。
本申请第一方面提供一种光电检测模组，光电检测模组包括保护罩、支架和电路板。电路板包括本体，本体安装有光发射器和光探测器，支架的一侧安装于本体，保护罩安装于支架背离本体的一侧，本体、支架和保护罩围合形成容腔，光发射器和光探测器均位于容腔内。
电路板的本体作为光发射器和光探测器的安装载体，光发射器和光探测器分别和本体电连接，在通电情况下，光发射器向光电检测模组的外部照射光线，光探测器接收被反射回来的光线，通过检测反射光的变化，反映用户的血液流动情况，计算出用户的心率、血氧等生物参数。其中，光发射器发出的光线经过保护罩照射至用户，反射光再经过保护罩被光探测器接收。由于本体、支架和保护罩围合形成容腔，即形成封闭空间，当光发射器和光探测器均位于容腔内时，容腔能够保护光发射器和光探测器不受外部异物的干扰和损害，以使光发射器和光探测器在正常状态下工作，从而保证光电检测模组的工作可靠性。进一步地，相比现有技术中的集成底壳组装方式，本申请利用本体、支架和保护罩围合形成可以保护光发射器和光探测器的容腔，使得针对光发射器和光探测器的保护不依赖于壳体，即光电检测模组和壳体可以实现解耦加工制作，所需的加工工艺难度降低，也无需较高的装配精度，从而使得制作过程更加优化以及降低制作成本。相比现有技术中的注塑保护方式，本体、支架和保护罩围合形成容腔的工艺难度也比注塑工艺难度较低，具体地，注塑保护方式需要在光发射器和光探测器的表面上精准地控制封装工艺，以满足对透光率、光损耗等光学性能要求，因此注塑保护方式的制作过程较为复杂且成本较高，而本申请可以选用预先制作好的保护罩直接安装于支架即可，因此本申请的光电检测模组的制作过程更加优化且制作成本较低。
在一种可能的设计中，支架包括位于容腔内的镂空部，光发射器和光探测器均位于镂空部内。
在一方面中，镂空部使得光线不会受到位于本体和保护罩之间的支架的阻碍，使得安装在本体的光发射器所发出的光线能够通过镂空部照射至保护罩，光线在通过具有透光性质的保护罩照射至用户，反射光再沿着相反的路径被安装在本体的光探测器接收。在另一方面中，光发射器和光探测器均位于镂空部内，使得本体和保护罩之间的距离更近，从而使得本申请的光电检测模组的结构更紧凑，有利于电子设备的小型化。另外，支架开设有镂空部，使得支架的质量减小，即光电检测模组的更加轻量化，当电子设备为移动电子设备时(例如手环、手表)，用户的负重感较小，从而提高用户的使用体验。
在一种可能的设计中，镂空部包括第一镂空部和第二镂空部，光发射器位于第一镂空部内，光探测器位于第二镂空部内。
光发射器位于第一镂空部内，光探测器位于第二镂空部内，使得光发射器和光探测器位于不同的镂空区域内，该设置能够限制光发射器的照射范围，降低光发射器的照射光对光探测器所要接收的反射光的干涉影响，或者避免光发射器的照射光直接照射至光接收器，使得光探测器能够精准地检测反射光的，有利于计算出较为准确的心率、血氧等生物参数，提高用户的使用体验。
在一种可能的设计中，第二镂空部围绕第一镂空部。
在一方面中，第二镂空部围绕第一镂空部的设置能够充分利用支架的可开设镂空空间的面积，使得光电检测模组的结构更加紧凑，节约制作成本，相应地，电子设备更加轻量化，用户的负重感较小，提高用户的使用体验。在另一方面中，第二镂空部围绕第一镂空部，使得光探测器也可以围绕光发射器设置，增加光电检测模组关于反射光的可接收范围，使得本申请光电检测模组更加适用于较为复杂的检测环境中(例如电子设备的透镜被异物局部地遮挡，或者用户血管相对于光电检测模组存在相对运动)，提高用户的使用体验。
在一种可能的设计中，支架包括内环件和外环件，内环件在外环件围合的空间内，内环件围合形成第一镂空部，内环件和外环件围合形成第二镂空部。
当内环件为环形时，很容易地围合形成第一镂空部，当外环件也为环形，并且内环件在外环件围合的空间内时，也很容易地围合形成第二镂空部，并且能够实现第二镂空部围绕第一镂空部地设置，本申请中支架的结构更加简单且容易制作，成本较低。
在一种可能的设计中，支架还包括连接件，连接件的两端分别连接外环件和内环件，连接件、外环件和内环件共同围合形成多个第二镂空部。
内环件通过连接件与外环件连接，一方面使得内环件和外环件可以同时安装至本体上，减少所需的定位安装基准数量，简化支架与本体的安装过程。另一方面，使得支架的结构强度更大，支架与本体的连接可靠性更高，提高本申请的光电检测模组的使用寿命。其中，连接件可以设置有多个，形成多个能够围绕第一镂空部的第二镂空部，从而可以安装多个光探测器，既可以增加关于反射光的可接受范围，也可以在个别光探测器失效情况下，光电检测模组还能够继续工作，提高光电检测模组的可靠性。
在一种可能的设计中，外环件与内环件均为圆形。
在满足第二镂空部围绕第一镂空部的条件下，外环件与内环件均为圆形，使得支架在本体上的安装面积较小，结构更加紧凑，并且使得在支架上开设的第一镂空部和第二镂空部的面积最大化，减少支架的重量，因此有利于光电检测模组的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。
在一种可能的设计中，沿内环件的径向，连接件由内环件连接至外环件。
该设置使得连接件在长度最短的条件下连接内环件和外环件，支架的重量较小，有利于光电检测模组的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。
在一种可能的设计中，外环件设置有第三镂空部，本体还安装有电极弹片和温度传感器，且电极弹片和温度传感器位于第三镂空部。
由于外环件设置有第三镂空部，电极弹片和温度传感器位于第三镂空部内，使得安装在本体的电极弹片和温度传感器能够更加靠近光探测器，减少本体的面积，并且使得电极弹片和温度传感器在不受支架结构干涉情况下与壳体接触，从而使得本申请的光电检测组件更加小型化，用户对电子设备的负重感较小，提高用户的使用体验，光电检测组件的小型化也有助于使电子设备能够集成更多的模块，为用户提供更多功能。
在一种可能的设计中，支架包括内环件和第一框架，内环件围合形成第一镂空部，第一框架围合形成第二镂空部。
由于内环件为环形，能够很容易围合形成第一镂空部，第一框架为框架结构，也很容易围合形成第二镂空部，使得支架的结构更加简单且容易制作，因此光电检测模组的制作过程更加优化且成本较低。
在一种可能的设计中，内环件为圆形，和/或第一框架为扇形框架。
当内环件为圆形时，使得在支架上开设的第一镂空部面积最大化，减少支架的重量，有利于光电检测模组的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。当第一框架为扇形框架，即框架的外围为圆弧，在本体上占用的安装面积较小，结构更加紧凑，有利于光电检测模组的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。当内环件为圆形，并且第一框架为扇形框架时，不仅同时具有上述效果，并且扇形的第一框架能够紧密地贴合圆形的内环件设置，结构更加紧凑，更有利于光电检测模组的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。
在一种可能的设计中，内环件与第一框架连接。
一方面可以使内环件和第一框架同时安装至本体上，减少所需的定位安装基准数量，简化支架与本体的安装过程，另一方面，支架的结构强度更大，支架与本体的连接可靠性更高，提高光电检测模组的使用寿命。
在一种可能的设计中，相邻两个第一框架之间具有间隔空间，本体还安装有电极弹片和温度传感器，且电极弹片和温度传感器位于间隔空间内。
间隔空间能够使得安装在本体的电极弹片和温度传感器能够更加靠近光发射器，减少本体不必要的面积，有利于光电检测模组的轻量化。另外，间隔空间使得电极弹片和温度传感器在不受支架的结构干涉情况下还能与壳体接触，使得光电检测模组的结构更加紧凑。因此，用户对装有光电检测模组的电子设备的负重感较小，用户的使用体验较高。
在一种可能的设计中，沿圆周方向，第一镂空部和第二镂空部交错设置于支架。
沿圆周方向，第一镂空部和第二镂空部交错设置于支架，当光照射器在第一镂空部内，即光照射器也沿圆周方向间隔设置在本体上，因此，光电检测模组的照射范围更大，并且照射在用户的光线更均匀，有利于提高光电检测模组的检测精度。同理，由于光探测器在第二镂空部内，即光探测器也沿圆周方向间隔设置在本体上，因此，光电检测模组对反射光的可接受范围更大，使得光电检测模组更加适用于较为复杂的检测环境中(例如电子设备的透镜被异物局部地遮挡，或者用户血管相对于光电检测模组存在相对运动)，提高用户的使用体验。
在一种可能的设计中，第二镂空部相对设置于第一镂空部的两端。
光电检测模组的结构较为简化，适合应用于可安装空间较小的电子设备中，也适用于对检测环境要求不高的场景中，例如电子设备为手持检测器，用户可以手握住电子设备对准待检测位置，即手动调整反射光的可接收范围。
在一种可能的设计中，支架包括第二框架和第三框架，第二框架围合形成第一镂空部，第三框架围合形成第二镂空部。
第二框架为框架结构，该结构简单易制作，很容易围合形成第一镂空部，同理，第三框架也为框架结构，该结构简单易制作，很容易围合形成第二镂空部。
在一种可能的设计中，第二框架和第三框架连接。
第二框架和第三框架连接，一方面可以使第二框架和第三框架可以同时安装至本体上，减少所需的定位安装基准数量，简化支架与本体的安装过程。另一方面，支架的结构强度更大，支架与本体的连接可靠性更高，提高本申请的光电检测模组的使用寿命。
在一种可能的设计中，第二框架和第三框架的连接位置背离本体的一侧设置有凸起部。
凸起部可以在第二框架和第三框架的基础上进一步限制光发射器所发出光线的照射角度范围，降低光发射器的照射光对光探测器所要接收的反射光的干涉影响，从而使得光探测器能够精准地检测反射光的变化，有利于计算出准确的心率、血氧等生物参数，从而提高用户的使用体验。
在一种可能的设计中，第二框架和第三框架分别安装有保护罩，且保护罩均抵接至凸起部的侧壁。
由于在第二框架围合的空间内安装有光发射器，在第三框架围合的空间内安装有光接收器，光接收器所要接收的反射光与光发射器所发出的照射光在光照强度、频谱、透光率等光学参数要求方面有所不同，因此在第二框架和第三框架分别安装有保护罩，并按照不同材质、结构或尺寸设计制作出安装于第二框架的保护罩和安装于第三框架的保护罩，以使本申请的光电检测模组的性能达到最佳。另外，保护罩均抵接至凸起部的侧壁，一方面凸起部既可以作为保护罩的定位安装基准，避免保护罩相对于支架的安装位置偏离，有利于使得本申请的光电检测模组的外部尺寸更加符合设计标准，另一方面，还可以增加保护罩与支架的安装连接面积，以使保护罩与支架的连接可靠性更高，从而提高本申请的光电检测模组的使用寿命。
在一种可能的设计中，支架包括磁性件。
当支架包括磁性件时，光电检测模组或包括光电检测模组的电子设备可以和外部的金属物或磁性物质产生磁吸力，以使光电检测模组或包括光电检测模组的电子设备能够稳定地安装至某一部件，因此无需较为复杂的连接结构，简化制作过程，也使得光电检测模组或包括光电检测模组的电子设备更加小型化。当电子设备为小型移动电子设备(例如手机、手环、手表、平板、手持检测器)，并且电子设备在与无线充电器贴合时，由于支架包括磁性件，磁性件可以用于与无线充电器内置的金属物或磁性物质产生磁吸力，使得电子设备不会相对于无线充电器随意运动，以保证充电过程的稳定和连续。
在一种可能的设计中，支架和本体之间设置有粘接层，和/或，支架和保护罩之间设置有粘接层。
当支架和本体之间设置有粘接层，无需在支架和本体上额外设置连接结构，降低支架和本体的加工工艺难度，利用粘接层连接支架和本体方式较为方便，制作过程更加优化且成本较低。同理，支架和保护罩之间设置有粘接层的效果相同，此处不再赘述。根据本体、支架和保护罩的材质不同，可以选择在支架和本体之间设置有粘接层、或者在支架和保护罩之间设置有粘接层，或者在支架和本体之间和在支架和保护罩之间均设置有粘接层。
在一种可能的设计中，支架背离本体的一侧还设置有台阶，保护罩安装于台阶。
保护罩安装于支架的台阶时，一方面支架能够更加靠近电路板的本体，光电检测模组更加紧凑，有利于光电检测模组的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。另一方面，台阶对于保护罩的边缘起到保护作用，在运输光电检测模组的过程中，台阶防止保护罩的边缘与外部异物磕碰，降低保护罩保护作用失效的风险。
在一种可能的设计中，本体设置有定位部，定位部用于与壳体配合，以限制本体相对于壳体的位置。
定位部用于使本体定位安装于壳体，以提高本申请光电检测模组的光路精度，从而能够计算出准确的心率、血氧等生物参数，提高用户的使用体验。
本申请第二方面提供一种电子设备，电子设备包括光电检测模组、壳体和透镜，壳体设置有透光孔，光电检测模组安装于透光孔的位于壳体内的一侧，透镜安装于透光孔的位于壳体外的一侧。本申请的电子设备具有上述内容的效果。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本申请。
 附图说明
图1为集成底壳组装方式的PPG模组的结构示意图；
图2为注塑保护方式的PPG模组的结构示意图；
图3为本申请所提供的电子设备中壳体和透镜的配合示意图；
图4为本申请所提供的电子设备中壳体和光电检测模组的配合示意图；
图5为图4中壳体的结构示意图；
图6为本申请所提供的光电检测模组在第一种实施例中的结构示意图；
图7为图6中光电检测模组沿A方向的剖视图；
图8为图6中光电检测模组的结构示意图，其中，未显示保护罩；
图9为图6中第一种实施例的结构示意图，其中，内环件与外环件之间无连接；
图10为图8中支架的结构示意图；
图11为图6中支架沿A方向的剖视图；
图12为图6中光电检测模组在另一视角下的结构示意图；
图13为图12中电极弹片的结构示意图；
图14为本申请所提供的光电检测模组在第二种实施例中的结构示意图；
图15为图14中光电检测模组沿C方向的剖视图；
图16为图14中光电检测模组的结构示意图，其中，未显示保护罩；
图17为图16中支架的结构示意图；
图18为图16中光电检测模组在另一视角下的结构示意图；
图19为本申请所提供的光电检测模组在第三种实施例中的结构示意图；
图20为图7中B部分的局部放大示意图；
图21为图15中D部分的局部放大示意图；
图22为本申请所提供的光电检测模组在第四种实施例中的结构示意图；
图23为图22中光电检测模组沿E方向的剖视图；
图24为图22中光电检测模组的结构示意图，其中，未显示保护罩；
图25为图24中支架的结构示意图；
图26为图22中光电检测模组在另一视角下的结构示意图；
图27为图8中光电检测模组的后视图；
图28为图7中光电检测模组的尺寸示意图；
图29为图25中支架和光探测器的尺寸示意图。
附图标记：
3'-电路板；
31'-发光二极管；
32'-光电检测器；
5'-电磁屏蔽罩；
6'-辅助电元器件；
20'-底壳；
30'-大透镜；
40'-菲涅尔透镜膜；
50'-隔光条；
60'-泡棉；
70'-电连接线；
80'-塑胶；
10-光电检测模组；
1-保护罩；
2-支架；
21-镂空部；
211-第一镂空部；
212-第二镂空部；
213-第四镂空部；
22-内环件；
23-外环件；
231-第三镂空部；
24-连接件；
25-第一框架；
251-间隔空间；
26-第二框架；
27-第三框架；
28-凸起部；
29-台阶；
3-电路板；
3a-本体；
31-光发射器；
32-光探测器；
33-电极弹片；
331-通孔；
34-温度传感器；
35-定位部；
36-电元器件；
4-容腔；
5-粘接层；
6-屏蔽罩；
20-壳体；
20a-透光孔；
30-透镜。
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
 具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
在本申请的描述中，除非另有明确的规定和限定，术语“第一”、“第二”仅用于描述的目的，而不能理解为指示或暗示相对重要性；除非另有规定或说明，术语“多个”是指两个或两个以上；术语“连接”、“固定”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接，或电连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。
现有技术中，PPG(Photoplethysmography)模组的制作方式主要包括两种，第一种是如图1所示的集成底壳的组装方式，即电路板3'和底壳20'集成组装，在底壳20'安装大透镜30'和菲涅尔透镜膜40'，以形成对发光二极管31'、光电检测器32'以及电连接线70'的保护。在菲涅尔透镜膜40'和电路板3'之间设置隔光条50'，在隔光条50'和菲涅尔透镜膜40'之间还设置有泡棉60'，在电路板3'背离底壳20'一侧还设置有辅助电元器件6'。
图1所示的PPG模组对组装加工要求较高，否则容易降低PPG模组的光路精度，恶化PPG模组的检测性能，因此加工制作较为复杂。
第二种是如图2所示的注塑保护方式，在电路板3'上通过注塑封装的方式形成塑胶80'，利用塑胶80'对发光二极管31'、光电检测器32'和电连接线70'进行保护。在电路板3'的另一侧，还设置有辅助电元器件6'，通过电磁屏蔽罩5'对辅助电元器件6'形成保护。
图2所示的PPG模组虽然能够实现电路板3'与底壳20'的解耦加工制作，但注塑工艺对制作和设备的要求也比较高，另外塑胶80'对于发光二极管31'和光电检测器32'还存在光损耗问题，会恶化PPG模组的检测性能。
为解决上述问题，本申请实施例提供一种电子设备，该电子设备可以是固定式电子设备或移动式电子设备，例如移动式电子设备可以为手机，平板，运动手环，手表或手持检测器等，用于健康检测技术领域，例如检测人体血液流动变化，计算出用户的心率、血氧等生物参数，以使用户了解自身健康状态。电子设备包括光电检测模组，具体地，如图3所示，电子设备还包括壳体20和透镜30，透镜30安装于壳体20。如图4所示，壳体20可以设置有透光孔20a，透镜30安装于透光孔20a的位于壳体20外的一侧。如图5所示，光电检测模组10安装于透光孔20a的位于壳体20内的一侧。
请同时参照图3至图5所示，光电检测模组10在壳体20内，壳体20和透镜30用于保护光电检测模组10，防止光电检测模组10被外部电子设备外的异物污染或损害，光电检测模组10通过安装于透光孔20a的透镜30向壳体20的外部发出光线，再通过透镜30接收壳体20外部的反射光，检测反射光的变化，从而反映被检测物的状态变化。其中，本申请实施例的光电检测模组10内部还包括能够保护内部电器件的防护措施，壳体20和透镜30仅作为光电检测模组10内部电元器件的第一道防护，因此，光电检测模组10和壳体20可以解耦加工制作，具体技术细节在后续内容介绍。
其中，如图3-图5所示的壳体20可以是电子设备的外壳中一部分。
当然，本申请实施例的电子设备还可以应用于其它存在流体变化影响光反射的场景，例如检测管道内部流动液体的流速、检测封闭容器内部气体密度的等场景。
本文后续关于电子设备的内容描述主要以应用于健康检测技术领域为主。
请参照图6-图7所示，光电检测模组10包括保护罩1、支架2和电路板3，电路板3包括本体3a，本体3a安装有光发射器31和光探测器32，支架2的一侧安装于本体3a，保护罩1安装于支架2背离本体3a的一侧，本体3a、支架2和保护罩1围合形成容腔4，光发射器31和光探测器32均位于容腔4内。
本实施例中，请参照图6-图7所示，电路板3的本体3a作为光发射器31和光探测器32的安装载体，光发射器31和光探测器32分别和本体3a电连接，在通电情况下，光发射器31向光电检测模组10的外部照射光线，光探测器32接收被反射回来的光线，通过检测反射光的变化，反映用户的血液流动情况，计算出用户的心率、血氧等生物参数。其中，光发射器31发出的光线经过保护罩1照射至用户，反射光再经过保护罩1被光探测器32接收。由于本体3a、支架2和保护罩1围合形成容腔4，即形成封闭空间，当光发射器31和光探测器32均位于容腔4内时，容腔4能够保护光发射器31和光探测器32不受外部异物的干扰和损害，以使光发射器31和光探测器32在正常状态下工作，从而保证光电检测模组10的工作可靠性。进一步地，相比现有技术中的集成底壳组装方式，本申请实施例利用本体3a、支架2和保护罩1围合形成可以保护光发射器31和光探测器32的容腔4，使得针对光发射器31和光探测器32的保护不依赖于壳体20，即光电检测模组10和壳体20可以实现解耦加工制作，所需的加工工艺难度降低，也无需较高的装配精度，从而使得制作过程更加优化以及降低制作成本。相比现有技术中的注塑保护方式，本体3a、支架2和保护罩1围合形成容腔4的工艺难度也比注塑工艺难度较低，具体地，注塑保护方式需要在光发射器31和光探测器32的表面上精准地控制封装工艺，以满足对透光率、光损耗等光学性能要求，因此注塑保护方式的制作过程较为复杂且成本较高，而本申请实施例可以选用预先制作好的保护罩1直接安装于支架2即可，因此本申请实施例的光电检测模组10的制作过程更加优化且成本较低。
进一步地，保护罩1可以选用透光率比塑胶较高的材质制作，光损耗较小，能够提高检测精度和精准地反映用户的心率、血氧等生物参数，从而提高用户的使用体验。
例如可以选用透光率至少大于90％的材质制作保护罩1，例如聚对苯二甲酸乙二醇酯(PET)或玻璃。本申请实施例也可以在保护罩1上镀滤光膜，以使特定光谱的光能够经过保护罩1，从而提高本申请实施例的光电检测模组10的检测精度，或者利用菲涅尔膜片制作保护罩1，菲涅尔膜片的一面为光面，另一面刻录了由小到大的同心圆，菲涅尔膜片能够使穿过不同位置的保护罩1的光线保持亮度均匀，从而使得光探测器32能够精准地检测反射光的变化，从而获取较为准确的心率、血氧等生物参数，从而提高用户的使用体验。
具体地，请参照图8-图9所示，支架2包括位于容腔4内的镂空部21，光发射器31和光探测器32均位于镂空部21内。
本实施例，请参照图8-图9所示，在一方面中，镂空部21使得光线不会受到位于本体3a和保护罩1之间的支架2的阻碍，使得安装在本体3a的光发射器31所发出的光线能够照射至保护罩1，光线在通过具有透光性质的保护罩1照射至用户，反射光再沿着相反的路径被安装在本体3a的光探测器32接收。本实施例另一方面中，光发射器31和光探测器32均位于镂空部21内，使得本体3a和保护罩1之间的距离更近，从而使得本申请实施例的光电检测模组10的结构更紧凑，有利于电子设备的小型化。另外，本实施例的支架2开设有镂空部21，使得支架2的质量减小，即光电检测模组10的更加轻量化，当电子设备为移动电子设备时(例如手环、手表)，用户的负重感较小，从而提高用户的使用体验。
其中，支架2可以包括一个镂空部21，光发射器31和光探测器32可以均位于同一个镂空部21内。或者，支架2可以包括两个或多个镂空部21，光发射器31和光探测器32可以位于不同的镂空部21内。
更具体地，请参照图8-图10所示，镂空部21包括第一镂空部211和第二镂空部212，光发射器31位于第一镂空部211内，光探测器32位于第二镂空部212内。
本实施例中，请参照图8所示，光发射器31位于第一镂空部211内，光探测器32位于第二镂空部212内，使得光发射器31和光探测器32位于不同的镂空区域内，该设置能够限制光发射器31的照射范围，降低光发射器31的照射光对光探测器32所要接收的反射光的干涉影响，或者避免光发射器31的照射光直接照射至光接收器32，使得光探测器32能够精准地检测反射光的变化，有利于计算出较为准确的心率、血氧等生物参数，提高用户的使用体验。
其中，第一镂空部211可以是一个或多个，第二镂空部212也可以是一个或多个。
请参照图8-图9所示，第二镂空部212围绕第一镂空部211。
本实施例，请参照图8-图9所示，在一方面中，第二镂空部212围绕第一镂空部211的设置能够充分利用支架2的可开设镂空空间的面积，使得光电检测模组10的结构更加紧凑，节约制作成本，相应地，电子设备更加轻量化，用户的负重感较小，提高用户的使用体验。本实施例在另一方面中，第二镂空部212围绕第一镂空部211，使得光探测器32也可以围绕光发射器31设置，增加光电检测模组10关于反射光的可接收范围，使得本申请实施例光电检测模组10更加适用于较为复杂的检测环境中(例如电子设备的透镜30被异物局部地遮挡，或者用户血管相对于光电检测模组10存在相对运动)，提高用户的使用体验。
其中，请参照图8-图9所示，第二镂空部212可以完全围绕第一镂空部211。当然，第二镂空部212也可以部分地围绕第一镂空部211。
另外，第一镂空部211和第二镂空部212可以为三角形、矩形、六边形或环形等形状，第一镂空部211的中心可以是支架2的中心，第二镂空部212可以相对于第一镂空部211的中心圆周阵列设置。
本申请实施例中，第二镂空部212围绕第一镂空部211的实施例包含两种，本文首先介绍第一种实施例。
请参照图9-图10所示，支架2包括内环件22和外环件23，内环件22在外环件23围合的空间内，内环件22围合形成第一镂空部211，内环件22和外环件23围合形成第二镂空部212。
本实施例中，请参照图9-图10所示，当内环件22为环形时，很容易地围合形成第一镂空部211，当外环件23也为环形，并且内环件22在外环件23围合的空间内时，也很容易地围合形成第二镂空部212，并且能够实现第二镂空部212围绕第一镂空部211的设置，因此，本实施例中的支架2的结构更加简单且容易制作，成本较低。
其中，内环件22和外环件23可以为圆形或椭圆等环形件。
请参照图9所示，内环件22可以与外环件23不连接。或者，请参照图10所示，内环件22也可以与外环件23连接。
请参照图10-图11所示，支架2还包括连接件24，连接件24的两端分别连接外环件23和内环件22，连接件24、外环件23和内环件22共同围合形成多个第二镂空部212。
本实施例中，内环件22通过连接件24与外环件23连接，一方面使得内环件22和外环件23可以同时安装至如图8所示的本体3a上，减少所需的定位安装基准数量，简化支架2与本体3a的安装过程。另一方面，使得支架2的结构强度更大，支架2与本体3a的连接可靠性更高，提高本申请实施例的光电检测模组10的使用寿命。
其中，连接件24、外环件23和内环件22作为支架2的一部分，连接件24、外环件23和内环件22可以均抵接至保护罩1，进一步地限制光发射器31的照射范围和避免光发射器31的照射光直接照射至光接收器32，使得光探测器32能够精准地检测反射光的变化，有利于计算出较为准确的心率、血氧等生物参数，提高用户的使用体验。
其中，请参照图10所示，连接件24可以设置有多个，形成多个能够围绕第一镂空部211的第二镂空部212，从而可以安装多个光探测器32，既可以增加关于反射光的可接受范围，也可以在个别光探测器32失效情况下，光电检测模组10还能够继续工作，提高光电检测模组10的可靠性。
另外，连接件24、外环件23和内环件22之间的连接方式可以为可拆卸连接或一体成型方式连接。
请参照图10所示，外环件23与内环件22均为圆形。
本实施例中，在满足第二镂空部212围绕第一镂空部211的条件下，外环件23与内环件22均为圆形，使得支架2在本体3a上的安装面积较小，结构更加紧凑，并且使得在支架2上开设的第一镂空部211和第二镂空部212的面积最大化，减少支架2的重量，因此有利于光电检测模组10的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。
请参照图10所示，沿内环件22的径向，连接件24由内环件22连接至外环件23。
本实施例的设置使得连接件24在长度最短的条件下连接内环件22和外环件23，支架2的重量较小，有利于光电检测模组10的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。
请参照图11-图12所示，外环件23设置有第三镂空部231，本体3a还安装有电极弹片33和温度传感器34，且电极弹片33和温度传感器34位于第三镂空部231。
本实施例中，请参照图12所示，由于外环件23设置有第三镂空部231，电极弹片33和温度传感器34位于第三镂空部231内，使得安装在本体3a的电极弹片33和温度传感器34能够更加靠近光探测器32，减少本体3a的面积，并且使得电极弹片33和温度传感器34在不受支架2结构干涉情况下与壳体20接触，从而使得本申请实施例的光电检测组件10更加小型化，用户对电子设备的负重感较小，提高用户的使用体验，光电检测组件10的小型化也有助于使电子设备能够集成更多的模块，为用户提供更多功能。
其中，当光电检测模组10安装至壳体20时，电极弹片33用于与壳体20或透镜30接触，当壳体20或透镜30与用户皮肤接触时，电极弹片33能够检测用户皮肤表面上由心脏搏动产生的心电信号，从而检测心电或心率。或者电极弹片33用于向用户皮肤发送电信号或/和接收电信号，这些电信号用于监测人体的体成分(例如体脂、肌肉含量)等生理参数。温度传感器34也用于与壳体20或透镜30接触，当壳体20或透镜30与用户皮肤接触时，温度传感器34用于测量用户皮肤表面温度。在温度传感器34和壳体20的接触面上涂有导热胶，把壳体20或透镜30的温度传到至温度传感器34。
另外，本申请实施例对第三镂空部231的数量不限制，电极弹片33和温度传感器34可以在同一个第三镂空部231内，或者电极弹片33和温度传感器34在不同的第三镂空部231内。
当然，本体3a还可以安装有其它电子部件，其它电子部件也可以位于第三镂空部231内。
请参照图13所示，在电极弹片33开设通孔331，在电极弹片33与壳体20接触时发生形变情况下，通孔331一方面能够减小电极弹片33的内部的挤压应力，提高电极弹片33的使用寿命，另一方面可以减少弹片33对底壳20的挤压应力，提高电子设备的使用寿命。
在上述实施例中，请参照图12所示，本体3a设置有定位部35，定位部35用于与壳体20配合，以限制本体3a相对于壳体20的位置。
本实施例中，定位部35用于使本体3a定位安装于壳体20，以提高本申请实施例光电检测模组10的光路精度，从而能够计算出准确的心率、血氧等生物参数，提高用户的使用体验。
请参照图14-图16所示，接下来介绍关于光电检测模组10的第二种实施例，该实施例也包括第二镂空部212围绕第一镂空部211的设置。
具体地，请参照图17所示，支架2包括内环件22和第一框架25，内环件22围合形成第一镂空部211，第一框架25围合形成第二镂空部212。
本实施例中，由于内环件22为环形，能够很容易围合形成第一镂空部211，第一框架25为框架结构，也很容易围合形成第二镂空部212，使得支架2的结构更加简单且容易制作，因此光电检测模组10的制作过程更加优化且成本较低。
更具体地，请参照图17所示，内环件22为圆形，和/或第一框架25为扇形框架。
本实施例中，当内环件22为圆形时，使得在支架2上开设的第一镂空部211面积最大化，减少支架2的重量，有利于光电检测模组10的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。当第一框架25为扇形框架，即框架的外围为圆弧，在本体3a上占用的安装面积较小，结构更加紧凑，有利于光电检测模组10的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。当内环件22为圆形，并且第一框架25为扇形框架时，不仅同时具有上述效果，并且扇形的第一框架25能够紧密地贴合圆形的内环件22设置，结构更加紧凑，更有利于光电检测模组10的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。
其中，请参照图17所示，内环件22可以与第一框架25连接。或者，内环件22可以与第一框架25之间没有物理连接(图中未示出)，即内环件22与第一框架25分别单独安装至本体3a上。
请参照图17所示，内环件22与第一框架25连接。
本实施例中，一方面可以使内环件22和第一框架25同时安装至本体3a上，减少所需定位安装基准数量，简化支架2与本体3a的安装过程，另一方面，支架2的结构强度更大，支架2与本体3a的连接可靠性更高，提高光电检测模组10的使用寿命。
其中，本申请实施例对第一框架25的数量不限制。
在上述实施例中，如图18所示，支架2可以包括间隔分布的四个第一框架25。
请参照图18所示，相邻两个第一框架25之间具有间隔空间251，本体3a还安装有电极弹片33和温度传感器34，且电极弹片33和温度传感器34位于间隔空间251内。
本实施例中，间隔空间251能够使得安装在本体3a的电极弹片33和温度传感器34能够更加靠近光发射器31，减少本体3a不必要的面积，有利于光电检测模组10的轻量化。另外，间隔空间251使得电极弹片33和温度传感器34在不受支架2的结构干涉情况下还能与壳体20接触，使得光电检测模组10的结构更加紧凑。因此，用户对装有光电检测模组10的电子设备的负重感较小，用户的使用体验较高。
其中，电极弹片33和温度传感器34的作用已在上述内容中介绍，此处不再赘述。
另外，请参照图18所示，电极弹片33和温度传感器34可以在不同的间隔空间251内。当然，电极弹片33和温度传感器34也可以在同一个间隔空间251内
此外，本体3a还可以安装有其它电子部件，其它电子部件也可以位于间隔空间251内，例如驱动光发射器31的电路，以及关于光探测器32检测信号的接收电路和处理电路。
关于图16所示的第二种实施例，还可以有替换实施例(图中未示出)，即将第一镂空部211围绕第二镂空部212设置，第一镂空部211为扇形框架，第二镂空部212为环形件，光发射器31位于第一镂空部211内，光探测器32位于第二镂空部212内。
在第三种实施例中，请参照图19所示，沿圆周方向，第一镂空部211和第二镂空部212交错设置于支架2。
本实施例中，沿圆周方向，第一镂空部211和第二镂空部212交错设置于支架2，而光照射器31在第一镂空部211内，即光照射器31也沿圆周方向间隔设置在本体3a上，因此，本实施例中的光电检测模组10的照射范围更大，并且照射在用户的光线更均匀，有利于提高光电检测模组10的检测精度。同理，光探测器32在第二镂空部212内，即光探测器32也沿圆周方向间隔设置在本体3a上，因此，本实施例中的光电检测模组10对反射光的可接受范围更大，使得本实施例中光电检测模组10更加适用于较为复杂的检测环境中(例如电子设备的透镜30被异物局部地遮挡，或者用户血管相对于光电检测模组10存在相对运动)，提高用户的使用体验。
其中，请参照图19所示，支架2可以沿圆周方向开设有八个镂空部21，四个第一镂空部211和四个第二镂空部212交错设置。
另外，请参照图19所示，支架2还可以包括第四镂空部213，第一镂空部211和第二镂空部212均围绕第四镂空部213设置。第四镂空部213内可以放置光发射器31，或者第四镂空部213内放置光探测器32。
在上述第一种实施例、第二种实施例和第三种实施例中，请参照图20-图21所示，支架2背离本体3a的一侧还设置有台阶29，保护罩1安装于台阶29。
本实施例中，保护罩1安装于支架2的台阶29时，一方面支架2能够更加靠近电路板3的本体3a，光电检测模组10更加紧凑，有利于光电检测模组10的轻量化，用户对电子设备的负重感较小，提高用户的使用体验。另一方面，台阶29对于保护罩1的边缘起到保护作用，在运输光电检测模组10的过程中，台阶29防止保护罩1的边缘与外部异物磕碰，降低保护罩1保护作用失效的风险。
请参照图22-图23所示，本文后续介绍第四种实施例。
请参照图24-图25所示，第二镂空部212可以相对设置于第一镂空部211的两端。
本实施例中的光电检测模组10的结构较为简化，适合应用于可安装空间较小的电子设备中，也适用于对检测环境要求不高的场景中，例如电子设备为手持检测器，用户可以手握住电子设备对准待检测位置，即手动调整反射光的可接收范围。
当然，第一镂空部211也可以相对设置于第二镂空部212的两端，即光发射器31位于光探测器32的两端，图中未示出该实施例。
当然，还可以在支架2上沿直线开设三个镂空部21，任选一个镂空部21作为第一镂空部211，用于放置光发射器31，其余两个镂空部21作为第二镂空部212，用于放置光探测器32，或者任选一个镂空部21作为第二镂空部212，用于放置光探测器32，其余两个镂空部21作为第一镂空部211，用于放置光发射器31。
具体地，请参照图25所示，支架2包括第二框架26和第三框架27，第二框架26围合形成第一镂空部211，第三框架27围合形成第二镂空部212。
本实施例中，第二框架26为框架结构，该结构简单易制作，很容易围合形成第一镂空部211，同理，第三框架27也为框架结构，该结构简单易制作，很容易围合形成第二镂空部212。
其中，图25中点划线仅用于表示第二框架26和第三框架27的范围。
另外，第二框架26可以连接至第三框架27，第二框架26也可以不连接至第三框架27。
更具体地，请参照图25所示，第二框架26和第三框架27连接。
本实施例中，第二框架26和第三框架27连接，一方面可以使第二框架26和第三框架27可以同时安装至本体3a上，减少定位安装基准数量，简化支架2与本体3a的安装过程。另一方面，支架2的结构强度更大，支架2与本体3a的连接可靠性更高，提高本申请实施例的光电检测模组10的使用寿命。
其中，第二框架26和第三框架27的连接方式可以是可拆卸连接或一体成型连接。
请参照图26所示，第二框架26和第三框架27的连接位置背离本体3a的一侧设置有凸起部28。
本实施例中，在一方面中，凸起部28可以在第二框架26和第三框架27的基础上进一步限制光发射器31所发出光线的照射角度范围，降低光发射器31的照射光对光探测器32所要接收的反射光的干涉影响，从而使得光探测器32能够精准地检测反射光的变化，有利于计算出准确的心率、血氧等生物参数，从而提高用户的使用体验。
请参照图26所示，第二框架26和第三框架27分别安装有保护罩1，且保护罩1均抵接至凸起部28的侧壁。
本实施例中，由于在第二框架26围合的空间内安装有光发射器31，在第三框架27围合的空间内安装有光接收器32，光接收器32所要接收的反射光与光发射器31所发出的照射光在光照强度、频谱、透光率等光学参数要求方面有所不同，因此在第二框架26和第三框架27分别安装有保护罩1，并按照不同材质、结构或尺寸设计制作出安装于第二框架26的保护罩1和安装于第三框架27的保护罩1，以使本申请实施例的光电检测模组10的性能达到最佳。另外，保护罩1均抵接至凸起部28的侧壁，一方面凸起部28既可以作为保护罩1的定位安装基准，避免保护罩1相对于支架2的安装位置偏离，有利于使得本申请实施例的光电检测模组10的外部尺寸更加符合设计标准，另一方面，还可以增加保护罩1与支架2的安装连接面积，以使保护罩1与支架2的连接可靠性更高，从而提高本申请实施例的光电检测模组10的使用寿命。
当然，保护罩1也可以作为一个整体，同时覆盖第一镂空部211和第二镂空部212(图中未示出该实施例)。
在上述实施例中，支架2包括磁性件。
当支架2包括磁性件时，本申请实施例中的光电检测模组10或包括光电检测模组10的电子设备可以和外部的金属物或磁性物质产生磁吸力，以使光电检测模组10或包括光电检测模组10的电子设备能够稳定地安装至某一部件，因此无需较为复杂的连接结构，简化制作过程，也使得光电检测模组10或包括光电检测模组10的电子设备更加小型化。
具体地，当电子设备为小型移动电子设备(例如手机、手环、手表、平板、手持检测器)，并且电子设备在与无线充电器贴合时，由于支架2包括磁性件，磁性件可以用于与无线充电器内置的金属物或磁性物质产生磁吸力，使得电子设备不会相对于无线充电器随意运动，以保证充电过程的稳定和连续。
其中，请参照图9和图10所示，内环件22可以由磁性材质制成，外环件23也可以由磁性材质制成。请参照图17所示，内环件22可以由磁性材质制成，第一框架25也可以由磁性材质制成。请参照图25所示，第二框架26可以由磁性材质制成，第三框架27也可以由磁性材质制成。在上述实施例中，请参照图20、图21和图23所示，支架2和本体3a之间设置有粘接层5，和/或，支架2和保护罩1之间设置有粘接层5。
本实施例中，当支架2和本体3a之间设置有粘接层5，无需在支架2和本体3a上额外设置连接结构，降低支架2和本体3a的加工工艺难度，利用粘接层5连接支架2和本体3a方式较为方便，制作过程更加优化且成本较低。同理，支架2和保护罩1之间设置有粘接层5的效果相同，此处不再赘述。根据本体3a、支架2和保护罩1的材质不同，可以选择在支架2和本体3a之间设置有粘接层5、或者在支架2和保护罩1之间设置有粘接层5，或者在支架2和本体3a之间和在支架2和保护罩1之间均设置有粘接层5。
其中，粘接层5可以是胶水、胶带或其它具有粘结固定性质的物质。
另外，可以在内环件22和外环件23分别设置不同的粘接层5，内环件22的粘接层5为环形，外环件23的粘接层5也为环形。
支架2的材质可以是塑化物，可以利用热熔工艺使支架2的表面熔化，在支架2和保护罩1之间、支架2和本体3a之间形成粘接层5。
支架2的材质也可以是金属，可以利用焊接的方式将支架2与电路板3的本体3a固定连接，再用胶水将支架2与保护罩1固定连接。
在上述实施例中，光发射器31可以为发光二极管(Light Emitting Diode，LED)，光探测器32可以为光电二极管(Photodiode Detector，PD)，二者均可以为裸片(die)，光发射器31和光探测器32均通过金线(Bonding线，图中未示出)与电路板3的本体3a(PCB板)电连接。
在上述实施例中，请参照图27所示，在电路板3的本体3a背离支架2的一侧还可以安装有其它的电元器件36和屏蔽罩6，屏蔽罩6和本体3a形成封闭空间，部分电元器件36可以在该封闭空间内，屏蔽罩6用于防止外界对电元器件36的电磁干扰。
其中，电元器件36可以包括模拟前端(Analog Front End，AFE)、电容、电感、压焊盘或接口引脚等元件。
请参照图28所示，第一种实施例的光电检测模组10中本体3a的高度H3a为0.4mm，支架2的高度H2为0.6mm，保护罩1的高度H1为0.15mm，保护罩1和本体3a之间间隔的高度H4为0.35mm，光发射器31的高度H31为0.15mm-0.2mm，光探测器32的高度H32为0.15mm，屏蔽罩6的高度H6为1mm。
第二种实施例的光电检测模组10关于高度尺寸可以与第一种实施例中尺寸相同或近似。其中，当第二种实施例中本体3a背离支架2的一侧没有电元器件36时，光电检测模组10中本体3a的高度H3a为0.4mm，支架2的高度H2为0.6mm。
请参照图26和图29所示的第四种实施例的光电检测模组10的总高度H10为1mm，本体3a的H3a高度为0.4mm，支架2的长度L2为14.8mm，支架2的宽度W2为5.8mm，第一镂空部211的宽度W211为4.4mm，第二镂空部212的宽度W212为3.8mm，光探测器32的长度L32为3mm，光探测器32的宽度W32为3mm。或者，光探测器32的长度L32为3mm，光探测器32的宽度W32为2mm。
本申请实施例的光电检测模组10的组装方法分为如下步骤：
步骤(1)：采用表面贴装工艺(SMT贴片工艺)，将电元器件36(芯片、电阻、电容、电极弹片33、温度传感器34等)安装至电路板3的本体3a上。
步骤(2)：当支架2为金属材质时，也采用SMT贴片工艺，将支架2安装至电路板3的本体3a；当支架2为非金属材质，用粘接层5(胶水或遮光胶带)将支架2粘接至电路板3的本体3a。
步骤(3)：采用贴片工艺(Die Bonding)将光发射器31和光探测器32的裸芯片贴装至电路板3的本体3a上，再利用打线工艺(Wiring bonding)在本体3a打上金线，使金线与光发射器31和光探测器32电连接。
步骤(4)：利用粘接层5(胶水或遮光胶带)将保护罩1粘接至支架2。
其中步骤(1)和步骤(2)的顺序可以互换，或者步骤(2)和步骤(3)的顺序可以互换。
[根据细则91更正 08.08.2023]
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (24)

  1. 一种光电检测模组，其特征在于，所述光电检测模组(10)包括：
    电路板(3)，所述电路板(3)包括本体(3a)，所述本体(3a)安装有光发射器(31)和光探测器(32)；
    支架(2)，所述支架(2)的一侧安装于所述本体(3a)；
    保护罩(1)，所述保护罩(1)安装于所述支架(2)背离所述本体(3a)的一侧；
    本体(3a)、所述支架(2)和所述保护罩(1)围合形成容腔(4)，所述光发射器(31)和所述光探测器(32)均位于所述容腔(4)内。
  2. 根据权利要求1所述的光电检测模组，其特征在于，所述支架(2)包括位于所述容腔(4)内的镂空部(21)；
    光发射器(31)和所述光探测器(32)均位于所述镂空部(21)内。
  3. 根据权利要求2所述的光电检测模组，其特征在于，所述镂空部(21)包括第一镂空部(211)和第二镂空部(212)；
    所述光发射器(31)位于所述第一镂空部(211)内，所述光探测器(32)位于所述第二镂空部(212)内。
  4. 根据权利要求3所述的光电检测模组，其特征在于，所述第二镂空部(212)围绕所述第一镂空部(211)。
  5. 根据权利要求4所述的光电检测模组，其特征在于，所述支架(2)包括内环件(22)和外环件(23)；
    所述内环件(22)在所述外环件(23)围合的空间内，所述内环件(22)围合形成所述第一镂空部(211)，所述内环件(22)和所述外环件(23)围合形成所述第二镂空部(212)。
  6. 根据权利要求5所述的光电检测模组，其特征在于，所述支架(2)还包括连接件(24)，所述连接件(24)的两端分别连接所述外环件(23)和所述内环件(22)；
    所述连接件(24)、所述外环件(23)和所述内环件(22)共同围合形成多个所述第二镂空部(212)。
  7. 根据权利要求6所述的光电检测模组，其特征在于，所述外环件(23)与所述内环件(22)均为圆形。
  8. 根据权利要求7所述的光电检测模组，其特征在于，沿所述内环件(22)的径向，所述连接件(24)由所述内环件(22)连接至所述外环件(23)。
  9. 根据权利要求5所述的光电检测模组，其特征在于，所述外环件(23)设置有第三镂空部(231)；
    所述本体(3a)还安装有电极弹片(33)和温度传感器(34)，且所述电极弹片(33)和所述温度传感器(34)位于所述第三镂空部(231)。
  10. 根据权利要求4所述的光电检测模组，其特征在于，所述支架(2)包括内环件(22)和第一框架(25)，所述内环件(22)围合形成所述第一镂空部(211)，所述第一框架(25)围合形成所述第二镂空部(212)。
  11. 根据权利要求10所述的光电检测模组，其特征在于，所述内环件(22)为圆形，和/或所述第一框架(25)为扇形框架。
  12. 根据权利要求11所述的光电检测模组，其特征在于，所述内环件(22)与所述第一框架(25)连接。
  13. 根据权利要求10所述的光电检测模组，其特征在于，相邻两个所述第一框架(25)之间具有间隔空间(251)；
    所述本体(3a)还安装有电极弹片(33)和温度传感器(34)，且所述电极弹片(33)和所述温度传感器(34)位于所述间隔空间(251)内。
  14. 根据权利要求3所述的光电检测模组，其特征在于，沿圆周方向，第一镂空部(211)和第二镂空部(212)交错设置于所述支架(2)。
  15. 根据权利要求3所述的光电检测模组，其特征在于，所述第二镂空部(212)相对设置于所述第一镂空部(211)的两端。
  16. 根据权利要求3所述的光电检测模组，其特征在于，所述支架(2)包括第二框架(26)和第三框架(27)；
    所述第二框架(26)围合形成所述第一镂空部(211)，所述第三框架(27)围合形成所述第二镂空部(212)。
  17. 根据权利要求16所述的光电检测模组，其特征在于，所述第二框架(26)和所述第三框架(27)连接。
  18. 根据权利要求17所述的光电检测模组，其特征在于，所述第二框架(26)和所述第三框架(27)的连接位置背离所述本体(3a)的一侧设置有凸起部(28)。
  19. 根据权利要求18所述的光电检测模组，其特征在于，所述第二框架(26)和所述第三框架(27)分别安装有所述保护罩(1)，且所述保护罩(1)均抵接至所述凸起部(28)的侧壁。
  20. 根据权利要求1-19中任一项所述的光电检测模组，其特征在于，所述支架(2)包括磁性件。
  21. 根据权利要求1-19中任一项所述的光电检测模组，其特征在于，所述支架(2)和所述本体(3a)之间设置有粘接层(5)，和/或，所述支架(2)和所述保护罩(1)之间设置有粘接层(5)。
  22. 根据权利要求1-13中任一项所述的光电检测模组，其特征在于，所述支架(2)背离所述本体(3a)的一侧还设置有台阶(29)，所述保护罩(1)安装于所述台阶(29)。
  23. 根据权利要求1-9中任一项所述的光电检测模组，其特征在于，所述本体(3a)设置有定位部(35)，所述定位部(35)用于与壳体(20)配合，以限制所述本体(3a)相对于所述壳体(20)的位置。
  24. 一种电子设备，其特征在于，所述电子设备包括：
    壳体(20)，所述壳体(20)设置有透光孔(20a)；
    光电检测模组(10)，所述光电检测模组(10)为权利要求1-23中任一项所述的光电检测模组(10)，所述光电检测模组(10)安装于所述透光孔(20a)的位于所述壳体(20)内的一侧；
    透镜(30)，安装于所述透光孔(20a)的位于所述壳体(20)外的一侧。
PCT/CN2023/098282 2022-06-09 2023-06-05 光电检测模组及电子设备 WO2023236898A1 (zh)

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