Detection device and terminal equipment

Abstract

The invention provides a detection device and terminal equipment, the detection device comprises a camera module, a light guide piece, a near-infrared emission device and a near-infrared receiving device, the light guide piece is arranged on the camera module, and the light guide piece comprises an emission light path coupling part and a receiving light path coupling part which are separated from each other; the near-infrared emission device is arranged at the end part of the emission light path coupling part and is used for emitting near-infrared light, and the emitted near-infrared light can be transmitted to the outside of the device through the emission light path coupling part; and the near-infrared receiving device is arranged at the end part of the receiving light path coupling part and is used for receiving the near-infrared light emitted by the near-infrared emitting device, and the near-infrared light emitted by the near-infrared emitting device can be transmitted to the near-infrared receiving device through the receiving light path coupling part after being reflected. According to the detection device and the terminal equipment provided by the embodiment of the invention, the transmission loss of near-infrared light can be reduced.

Description

Technical Field

[0001] This application relates to the field of optical technologies, and specifically, to a detection device and a terminal device. Background Art

[0002] In the intelligent application scenarios of mobile terminals, there is a strong demand for judging the proximity distance of objects. For example, in call scenarios such as phone calls, Changlian, and WeChat, it is required that the terminal device turns off the screen when it is close to the ear and turns on the screen when it is away from the ear; in the anti-misoperation scenario, when it is recognized that the terminal device is in the pocket, it is required that the terminal device suspends processes such as unlocking or turning on the screen.

[0003] Existing mobile terminals mostly adopt the under-screen proximity light solution, in which a light source and a light receiving device are arranged under the screen. The light source generally uses the near-infrared band, for example, 850nm - 940nm. When an object approaches, the near-infrared light emitted by the light source passes through the screen and irradiates the object, and after diffuse reflection, it passes through the screen and is transmitted to the receiving end. The receiving end can convert the received optical signal into an electrical signal and judge the proximity distance of the object according to the strength of the electrical signal.

[0004] However, since the proximity light is transmitted through the screen, the stack design of the screen and the development and application of new screen technologies are likely to cause energy loss of the near-infrared light, reducing the sensing sensitivity of the proximity light device. Summary of the Invention

[0005] This application provides a detection device and a terminal device, which can reduce the transmission loss of near-infrared light.

[0006] In a first aspect, a detection device is provided, including: a camera module; a light guide member, at least part of the light guide member is arranged on the camera module, the light guide member includes an emission optical path coupling part and a reception optical path coupling part, and the emission optical path coupling part and the reception optical path coupling part are mutually separated; a near-infrared emission device, the near-infrared emission device is arranged at the end of the emission optical path coupling part for emitting near-infrared light, and the emitted near-infrared light can be transmitted to the outside of the device through the emission optical path coupling part; a near-infrared reception device, the near-infrared reception device is arranged at the end of the reception optical path coupling part for receiving the near-infrared light emitted by the near-infrared emission device, and the near-infrared light emitted by the near-infrared emission device can be transmitted to the near-infrared reception device through the reception optical path coupling part after reflection.

[0007] In the embodiments provided by the present application, the detection device includes a light guide member. The light guide member is disposed on the camera module, and the light guide member includes an emission optical path coupling portion and a reception optical path coupling portion for transmitting near-infrared light. It can reuse the screen light passing hole corresponding to the camera module to transmit near-infrared light, without transmitting near-infrared light through the display screen. Furthermore, it can reduce the energy transmission loss of near-infrared light, improve the emission and reception efficiency of near-infrared light, and improve the induction sensitivity of the detection device. Further, the design of the display screen can not need to consider the transmission of near-infrared light, which can improve the flexibility of the display screen design of the terminal device, provide space for the introduction of new technologies for the display screen, and improve the competitiveness of the terminal device. In addition, the emission optical path coupling portion and the reception optical path coupling portion of the light guide member are mutually separated, which can reduce the crosstalk energy in the device and increase the capture of effective energy.

[0008] In combination with the first aspect, in some implementation manners of the first aspect, one end of the emission optical path coupling portion away from the near-infrared emission device is in the shape of a convex mirror.

[0009] In the embodiments provided by the present application, one end of the emission optical path coupling portion away from the near-infrared emission device being in the shape of a convex mirror can reduce the divergence angle of the near-infrared light emitted by the emission coupling optical path, and further can improve the coupling efficiency of the received light.

[0010] In combination with the first aspect, in some implementation manners of the first aspect, one end of the reception optical path coupling portion away from the near-infrared reception device includes Fresnel teeth.

[0011] In the embodiments provided by the present application, one end of the reception optical path coupling portion away from the near-infrared reception device includes Fresnel teeth, which can increase the surface area of the end portion of the reception optical path coupling portion. Moreover, the Fresnel teeth have an inclination angle, and the near-infrared light reflected by an object outside the device and reaching the end portion of the reception optical path coupling portion can be continuously reflected in the area where the Fresnel teeth are located, and further can increase the coupling efficiency of the received optical signal.

[0012] In combination with the first aspect, in some implementation manners of the first aspect, one side of the emission optical path coupling portion away from the camera module includes a first reflective film.

[0013] In the embodiments provided by the present application, one side of the emission optical path coupling portion away from the camera module includes a first reflective film, which can reduce the divergence amount of the near-infrared light emitted by the near-infrared emission device and improve the emission efficiency of the near-infrared light.

[0014] In combination with the first aspect, in some implementation manners of the first aspect, one side of the reception optical path coupling portion away from the camera module includes a second reflective film.

[0015] In the embodiments provided by this application, one side of the receiving optical path coupling part away from the camera module includes a second reflective film, which can reduce the divergence of the near-infrared light transmitted in the receiving optical path coupling part, improve the receiving efficiency of the near-infrared light, and increase the effective energy received by the near-infrared receiving device.

[0016] Combined with the first aspect, in some implementation manners of the first aspect, the camera module includes a lens structural member, the lens structural member includes a lens barrel and a base, the lens barrel is disposed on the base, the lens barrel includes at least two recessed parts, and the transmitting optical path coupling part and the receiving optical path coupling part are respectively received in corresponding recessed parts.

[0017] In the embodiments provided by this application, the lens barrel part of the lens structural member includes at least two recessed parts, and the transmitting optical path coupling part and the receiving optical path coupling part are respectively received in corresponding recessed parts. Correspondingly, a protruding part may be formed between two adjacent recessed parts among the at least two recessed parts. This protruding part can separate the transmitting optical path coupling part and the receiving optical path coupling part from each other, reducing the crosstalk problem; and can reduce the size of the light passing hole of the screen of the terminal device, so that when the user uses the terminal device, it is not easy to observe the internal structural components from the light passing hole of the screen, further improving the user experience.

[0018] Combined with the first aspect, in some implementation manners of the first aspect, the device further includes a first circuit board, the camera module is disposed on the first circuit board, and the camera module, the near-infrared transmitting device, and the near-infrared receiving device are electrically connected to the first circuit board.

[0019] In the embodiments provided by this application, the camera module, the near-infrared transmitting device, and the near-infrared receiving device are all electrically connected to the first circuit board, which can reduce the internal assembly components and lower the assembly complexity and production cost of the detection device and the terminal device.

[0020] Combined with the first aspect, in some implementation manners of the first aspect, the camera module is an autofocus AF camera module, the device further includes a first circuit board and a second circuit board, the second circuit board and the AF camera module are disposed on the same side of the first circuit board, and there is a distance between the second circuit board and the first circuit board; the AF camera module is electrically connected to the first circuit board, and the near-infrared transmitting device and the near-infrared receiving device are disposed on the second circuit board and are electrically connected to the second circuit board.

[0021] In the embodiments provided by this application, when the camera module is an AF camera module, the thickness of the camera module is relatively large. By providing two circuit boards, the AF camera module is electrically connected to the first circuit board, and the near-infrared receiving device and the near-infrared transmitting device are electrically connected to the second circuit board. This can shorten the coupling path of the near-infrared light, reduce the volume of the light guide member, and thus reduce the volume of the device. Moreover, it can shorten the coupling path of the near-infrared light, and thereby reduce the divergence problem of the near-infrared light on the coupling path, so as to improve the transmission efficiency of the near-infrared light.

[0022] In combination with the first aspect, in some implementation manners of the first aspect, one side of the emission optical path coupling portion close to the AF camera module includes a third reflective film.

[0023] In the embodiments provided by this application, one side of the emission optical path coupling portion close to the AF camera module includes a third reflective film, which can reduce the crosstalk energy and increase the capture of the effective energy.

[0024] In combination with the first aspect, in some implementation manners of the first aspect, one side of the reception optical path coupling portion close to the AF camera module includes a fourth reflective film.

[0025] In the embodiments provided by this application, one side of the reception optical path coupling portion close to the AF camera module includes a fourth reflective film, which can reduce the crosstalk energy and increase the capture of the effective energy.

[0026] In combination with the first aspect, in some implementation manners of the first aspect, the device further includes a metal member, and the metal member is disposed on the outer periphery of the emission optical path coupling portion and the reception optical path coupling portion.

[0027] In the embodiments provided by this application, disposing a metal member on the outer periphery of the light guide member can seal and support the light guide member.

[0028] In a second aspect, a detection device is provided, including: a camera module, the camera module includes a lens structural member and a lens group, the lens group is disposed within the lens structural member, and the material of the lens structural member is transmissive to near-infrared light; a near-infrared transmitting device, the near-infrared transmitting device is disposed at an end of the lens structural member for emitting near-infrared light, and the near-infrared light emitted by the near-infrared transmitting device can be transmitted through the lens structural member to the outside of the device; a near-infrared receiving device, the near-infrared receiving device is separated from the near-infrared transmitting device, and the near-infrared receiving device is configured to receive the near-infrared light emitted by the near-infrared transmitting device.

[0029] In the embodiments provided by this application, a near-infrared emitting device is disposed at the end of the lens structural member of the camera module, and the material of the lens structural member is transmissive to near-infrared light. The lens structural member and the corresponding screen light-transmitting hole of the camera module can be reused to emit near-infrared light, improving the emission efficiency of near-infrared light. Compared with the situation where both the emission and reception of near-infrared light are transmitted through the display screen, it can reduce the energy transmission loss of near-infrared light, lower the power consumption of the detection device, and increase the induction sensitivity of the detection device. The near-infrared emitting device and the near-infrared receiving device are isolated from each other, which can reduce crosstalk energy and is beneficial to increasing the capture of effective energy.

[0030] In combination with the second aspect, in some implementation manners of the second aspect, the lens structural member includes a lens barrel and a base, the lens barrel is disposed on the base, the lens barrel includes at least one inclined surface, and the included angle range between the at least one inclined surface and the plane where the base is located is 55° to 75°.

[0031] In the embodiments provided by this application, the lens structural member includes at least one inclined surface, and the included angle range between the at least one inclined surface and the first circuit board is 55° to 75°, which is beneficial to the coupling of the emitted light.

[0032] In combination with the second aspect, in some implementation manners of the second aspect, the device further includes a display screen, the near-infrared receiving device is disposed on the side of the display screen close to the camera module, and the near-infrared light emitted by the near-infrared emitting device can be transmitted through the display screen to the near-infrared receiving device after being reflected by an object outside the device.

[0033] In the embodiments provided by this application, on the basis that the near-infrared emitting device is disposed at the end of the lens structural member and the emitted near-infrared light is transmitted through the lens structural member, the near-infrared receiving device is disposed on the side of the display screen close to the camera module, and the reflected near-infrared light is transmitted to the near-infrared receiving device through the display screen, which can reduce the volumes of the detection device and the terminal device and lower the production costs of the detection device and the terminal device.

[0034] In combination with the second aspect, in some implementation manners of the second aspect, the device further includes a display screen and a frame body, the frame body is disposed at the end of the display screen and is fixedly connected to the display screen, the material of the frame body is transmissive to near-infrared light, the near-infrared receiving device is disposed in the frame body, and the near-infrared light emitted by the near-infrared emitting device can be transmitted through the frame body to the near-infrared receiving device after being reflected by an object outside the device.

[0035] In combination with the second aspect, in some implementation manners of the second aspect, the material of the frame body includes polycarbonate.

[0036] In the embodiments provided in this application, the device includes a display screen and a frame body, and the material of the frame body is transmissive to near-infrared light. The near-infrared light emitted by the near-infrared emitting device can pass through the frame body and be transmitted to the near-infrared receiving device, without the need to transmit the near-infrared light through the display screen. This can improve the reception efficiency of the near-infrared light and reduce the transmission loss of the near-infrared light. Moreover, neither the emission nor the reception of the near-infrared light needs to pass through the display screen, so the design of the display screen can be without considering the transmission of the near-infrared light, which can improve the flexibility of the display screen design of the terminal device, provide space for introducing new technologies for the display screen, and enhance the competitiveness of the terminal device.

[0037] In combination with the second aspect, in some implementation manners of the second aspect, the device further includes a first circuit board and a third circuit board. The camera module is disposed on the first circuit board, and the camera module, the near-infrared emitting device are electrically connected to the first circuit board, and the near-infrared receiving device is electrically connected to the third circuit board.

[0038] In combination with the second aspect, in some implementation manners of the second aspect, the material of the lens structural member includes polycarbonate.

[0039] In a third aspect, a terminal device is provided, including a display screen, and a device as in the first aspect or any possible implementation manner in the first aspect, or a device as in the second aspect or any possible implementation manner in the second aspect. The display screen includes a light-transmitting hole, and the position of the light-transmitting hole corresponds to the position of the camera module. The light-transmitting hole is used to transmit light for the camera module and the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic structural diagram of a terminal device;

[0041] Figure 2 is a schematic structural diagram of a proximity light device;

[0042] Figure 3 is a schematic overall structural diagram of a detection device provided by an embodiment of the present application;

[0043] Figure 4 is an exploded structural diagram of a detection device provided by an embodiment of the present application;

[0044] Figure 5 is a schematic cross-sectional structural diagram of a detection device provided by an embodiment of the present application;

[0045] Figure 6 is a schematic structural diagram of a light guide member in a detection device provided by an embodiment of the present application;

[0046] Figure 7 is an exploded structural diagram of a detection device provided by an embodiment of the present application;

[0047] Figure 8 is a schematic cross-sectional structure diagram of a detection device provided by an embodiment of the present application;

[0048] Figure 9 is a schematic overall structure diagram of a detection device provided by an embodiment of the present application;

[0049] Figure 10 is an exploded structure diagram of a detection device provided by an embodiment of the present application;

[0050] Figure 11 is a schematic structure diagram of a lens structural member in a detection device provided by an embodiment of the present application;

[0051] Figure 12 is a schematic overall structure diagram of a detection device provided by an embodiment of the present application;

[0052] Figure 13 is an exploded structure diagram of a detection device provided by an embodiment of the present application;

[0053] Figure 14 is a schematic cross-sectional structure diagram of a detection device provided by an embodiment of the present application;

[0054] Figure 15 is a schematic structure diagram of a terminal device provided by an embodiment of the present application;

[0055] Figure 16 is a schematic partial structure diagram of a detection device provided by an embodiment of the present application;

[0056] Figure 17 is an exploded structure diagram of a detection device provided by an embodiment of the present application;

[0057] Figure 18 is a schematic cross-sectional structure diagram of a detection device provided by an embodiment of the present application;

[0058] Figure 19 is a schematic structure diagram of a terminal device provided by an embodiment of the present application;

[0059] Figure 20 is a schematic cross-sectional structure diagram of a detection device provided by an embodiment of the present application. Detailed implementation manners

[0060] Next, the technical solutions in the present application will be described with reference to the accompanying drawings.

[0061] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc., which appear in different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way.

[0062] In various embodiments of the present application, the first, second, etc. are only used to indicate that multiple objects are different. For example, the first circuit board and the second circuit board are only used to indicate different circuit boards. It should not have any impact on the nature and quantity of the circuit board itself, etc. The above first, second, etc. should not impose any restrictions on the embodiments of the present application.

[0063] The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in another way.

[0064] In the embodiments of the present application, for the number of nouns, unless otherwise specified, it means "singular noun or plural noun", that is, "one or more". "At least one" means one or more, "multiple" means two or more, and "multiple" in "one or more" also means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0065] Figure 1 FIG. is a schematic structural diagram of a terminal device, and the terminal device can be a mobile phone, a tablet computer, a television (or smart screen), a laptop computer, a camera, a video recorder, a camera, etc. For ease of understanding, in the embodiments of the present application, the terminal device 100 is taken as an example of a mobile phone for illustration.

[0066] The terminal device 100 may include a display screen 110, and a camera module 120 may be provided above the display screen 110. The camera module 120 may be a front camera module and may be used for selfies. The camera module 120 may be installed at the upper middle position of the display screen 110, or may also be installed at the upper left or upper right position of the display screen 110, etc. The present application does not limit this.

[0067] The proximity light detection device 130 can be arranged next to the camera module 120, for example, it can also be arranged in the upper middle position of the display screen 110. The device 130 can be used to detect and judge the proximity distance of an object to realize the intelligence of the terminal device 100. For example, in call scenarios such as telephone, Changlian, WeChat, etc., the terminal device 100 can detect the distance between the human body and the terminal device, turn off the display screen 110 when the terminal device 100 is close to the ear to prevent accidental touch, and light up the display screen 110 when the terminal device 100 is far away from the ear, so that the user can view and operate the display screen 110. For another example, when the terminal device 100 is placed in a pocket, the unlocking or screen lighting process can be terminated according to the proximity distance of the external object. For another example, the proximity light detection device 130 can also be used in face recognition scenarios to determine whether to turn on face recognition according to the distance between the face and the terminal device 100, so as to facilitate operations such as screen unlocking, application unlocking, and face payment.

[0068] The existing terminal device 100 generally adopts an under-screen proximity light solution. The proximity light detection device 130 is as follows: Figure 2 As shown. The near-infrared emitting device 131 and the near-infrared receiving device 132 can be arranged on a printed circuit board (PCB) 134 and electrically connected to the PCB 134. The near-infrared emitting device 131 can be used to emit near-infrared light, and the emitted near-infrared light can pass through the display screen 110 to irradiate the object 140. The object 140 can be, for example, human skin. After diffuse reflection on the surface of the object, it passes through the screen 110 to reach the near-infrared receiving device 132. The near-infrared receiving device 132 can be used to convert the received optical signal into an electrical signal, and judge the distance from the object to the screen according to the strength of the electrical signal. The emission and reception of light can refer to Figure 2 The direction indicated by the arrow in the figure. A foam 133 may be provided between the near infrared emitting device and the near infrared receiving device, and the foam 133 may be used to separate the near infrared receiving device 132 and the near infrared emitting device 131, so as to prevent the near infrared light emitted by the near infrared emitting device 131 from being directly transmitted from the device to the near infrared receiving device 132 without being reflected by an object outside the device. Figure 2 As shown by the dotted arrows in , crosstalk energy is generated, which affects the detection sensitivity of the device 130.

[0069] The near-infrared light emitted and received by the proximity light detection device needs to pass through the screen for transmission. The stacked design of the screen and the introduction of new technologies are likely to cause energy loss of the near-infrared light, reducing the detection sensitivity of the proximity light detection device. Therefore, the embodiments of the present application provide a proximity light detection device that can reduce the transmission loss of the near-infrared light. The proximity light detection device may also be referred to as a detection device, a proximity light device, or a near-infrared light detection device, etc. The present application does not limit the name of the device. The detection device provided by the embodiments of the present application will be introduced in detail below with reference to the accompanying drawings.

[0070] First, refer to Figures 3 to 6 the detection device 200 shown in Figure 3 which is the overall structural schematic diagram of the detection device 200, Figure 4 and Figure 3 which is the exploded structural diagram of the device 200 shown in Figure 5 and Figure 3 which is the sectional structural schematic diagram of the device 200 along the A-A direction, that is, the sectional schematic diagram along the yz plane, Figure 6 and Figure 3 which is the exploded structural diagram of the light guide member 210 in the device 200 shown. The device 200 may include a camera module, a light guide member 210, a near-infrared emitter 131, a near-infrared receiver 132, and a first circuit board 240. The light guide member 210 may be disposed on the camera module.

[0071] Exemplarily, the camera module may include the illustrated filter holder 230 and lens structure member 220. The filter holder 230 may be disposed on the first circuit board 240. The filter holder 230 being disposed on the first circuit board 240 may mean that the filter holder 230 is disposed above the first circuit board 240 along the illustrated z-axis direction. A filter 231 may be disposed on the filter holder 230 for filtering light and selecting light in the required radiation band. The lens structure member 220 may be disposed on the filter holder 230, that is, may be disposed above the filter holder 230 along the illustrated z-axis direction. The lens structure member 220 may include a lens barrel 222 and a base 221. The lens barrel 222 may be carried on the base 221. A lens group 2221 may be disposed in the lens barrel 222 for implementing the imaging function of the camera module. The lens barrel 222 may be used for installing and supporting the lens group 2221. The upper end of the lens barrel 222 may include a light passing hole 223, that is, the end of the lens barrel 222 close to the object to be photographed includes the light passing hole 223, so that light can enter the lens group 2221 through the light passing hole 223 after being reflected by the object and be imaged after being refracted, reflected, etc.

[0072] In some embodiments, the light guide member 210 may be disposed on the lens structural member 220 and may be disposed on the lens barrel 222. Since the lens group 2221 in the lens barrel 222 may include a plurality of lenses, the lens barrel 222 may have a certain thickness, that is, have a certain dimension in the illustrated z-axis direction. For example, the lens barrel 222 may be a structure in which the radial dimension gradually increases from top to bottom along the z-axis direction as illustrated. The light guide member 210 is disposed on the lens barrel 222, and the light guide member 210 may be sleeved on the lens barrel 222, and the shape of the light guide member 210 may be adapted to the shape of the lens barrel 222. The radial dimension of the lens barrel 222 gradually increases from top to bottom along the z-axis direction, and the radial dimension of the light guide member 210 may also gradually increase from top to bottom along the z-axis direction. For example, it may be in a hood-like structure, and the radial dimension of the light guide member 210 may be greater than the radial dimension of the lens barrel 222, so that the light guide member 210 can be sleeved on the lens barrel 222.

[0073] The light guide member 210 may include an emission optical path coupling portion 211 and a reception optical path coupling portion 212. The emission optical path coupling portion 211 may be used to transmit the near-infrared light emitted by the near-infrared emission device 131 outside the device 200, so that the emitted near-infrared light can be emitted to an external object, such as the human skin. Further, in order to enable the emission optical path coupling portion 211 to better transmit the near-infrared light emitted by the near-infrared emission device 131, the emission optical path coupling portion 211 may extend to the surface of the near-infrared emission device 131. That is to say, the near-infrared emission device 131 may be disposed at the lower end of the emission optical path coupling portion 211. Figures 3 to 6Taking the illustrated device as an example, the near-infrared emitting device 131 and the near-infrared receiving device 132 are disposed on the first circuit board 240 and electrically connected to the first circuit board 240. In this example, in order to enable the normal emission and reception of near-infrared light, light guide holes can be provided at corresponding positions of the camera module. On the emission optical path side, the lens structural member 220 and the filter holder 230 may sequentially include a light guide hole 224 and a light guide hole 232. The light guide hole 224 may be provided on the base 221 in the lens structural member 220. The positions of the light guide hole 224 and the light guide hole 232 may correspond to the position of the emission optical path coupling portion 211, and the sizes of the light guide hole 224 and the light guide hole 232 may be larger than the size of the emission optical path coupling portion 211. The size may be the size of the light guide hole 224 and the light guide hole 232 in the x-axis and y-axis directions shown in the figure. The emission optical path coupling portion 211 may extend downward along the z-axis from the base 221 and sequentially pass through the light guide hole 224 and the light guide hole 232, and extend to the surface of the near-infrared emitting device 131. That is to say, the emission optical path coupling portion 211 may be partially disposed above the lens structural member 220 and may also be partially disposed below the lens structural member 220. When the first circuit board 240, the lens structural member 220, and the filter holder 230 are stacked on each other, the near-infrared emitting device 131 may be received in the light guide hole 232.

[0074] The near-infrared light emitted by the near-infrared emission device 131 can be transmitted to the outside of the device through the emission optical path coupling part 211 and emitted to the human body. After being reflected by the human body, it can be transmitted to the near-infrared receiving device 132 through the receiving optical path coupling part 212. The near-infrared receiving device 132 converts the optical signal into an electrical signal and judges the distance of the object according to the strength of the electrical signal. Furthermore, the receiving optical path coupling part 212 can extend to the surface of the near-infrared receiving device 132 so that the near-infrared receiving device 132 can better receive the near-infrared light. That is to say, the near-infrared receiving device 132 can be arranged at the lower end of the receiving optical path coupling part 212. On the side of the receiving optical path, the lens structural member 220 and the filter holder 230 can sequentially include a light guide hole 225 and a light guide hole 233. The light guide hole 225 can be arranged on the base 221 of the lens structural member 220. The positions of the light guide hole 225 and the light guide hole 233 can correspond to the positions of the receiving optical path coupling part 212 and the near-infrared receiving device 132, and the sizes of the light guide hole 225 and the light guide hole 233 can be larger than the size of the receiving optical path coupling part 212, so that the receiving optical path coupling part 212 can sequentially pass through the light guide hole 225 and the light guide hole 233 and extend to the surface of the near-infrared receiving device 132. That is to say, the receiving optical path coupling part 212 can be partially arranged above the lens structural member 220 or partially arranged below the lens structural member 220. When the first circuit board 240, the lens structural member 220, and the filter holder 230 are stacked on each other, the near-infrared receiving device 132 can be accommodated in the light guide hole 233.

[0075] The illustrated emission optical path coupling part 211 and the receiving optical path coupling part 212 are arranged opposite to each other in the y-axis direction. Correspondingly, the light guide hole 224 and the light guide hole 225 can also be arranged opposite to each other in the y-axis direction, the light guide hole 232 and the light guide hole 233 can also be arranged opposite to each other in the y-axis direction, and the near-infrared emission device 131 and the near-infrared receiving device 132 can also be arranged opposite to each other in the y-axis direction. The emission optical path coupling part 211 and the receiving optical path coupling part 212 may not be arranged opposite to each other in the y-axis direction. It only needs to ensure that the emission optical path coupling part 211 and the receiving optical path coupling part 212 are isolated from each other, and the positions of the respective light guide holes correspond to the positions of the emission optical path coupling part 211 and the receiving optical path coupling part 212. The present application does not limit the setting positions and the area sizes of the emission optical path coupling part 211 and the receiving optical path coupling part 212.

[0076] The materials of the transmitting optical path coupling part 211 and the receiving optical path coupling part 212 can be materials that are transmissive to near-infrared light and can be materials that are low-transmissive or non-transmissive to visible light. For example, the materials of the transmitting optical path coupling part 211 and the receiving optical path coupling part 212 can be polycarbonate (PC), and PC can be selected to have a low transmittance for visible light in the wavelength range of 400 nm to 720 nm and a high transmittance for near-infrared light in the wavelength range of 850 nm to 940 nm. For example, the transmittance of PC for visible light can be less than 5%, and the transmittance for near-infrared light can be greater than 80%. The materials of the transmitting optical path coupling part 211 and the receiving optical path coupling part 212 can be the same or different. In the embodiments of the present application, the light guide member 210 can also be referred to as a light guide module, a light guide structural member, etc. The present application does not limit the name of the light guide member.

[0077] In some embodiments, the included angle range between the transmitting optical path coupling part 211 and the base 221 can be 55° to 75°, or rather, the included angle range between the transmitting optical path coupling part 211 and the xy plane shown in the figure can be 55° to 75°, so as to be conducive to the coupling of the transmitted light and better transmit the near-infrared light. When the near-infrared emitting device 131 is located below the lens structural member 220, that is, below the base 221, the transmitting optical path coupling part 211 can include a part located on the base 221 and a part located below the base 221. The included angle ranges between the two parts and the base 221 can both be 55° to 75°, and the included angles between the two parts and the base 221 can be the same or different. Exemplarily, the included angle between the transmitting optical path coupling part 211 and the base 221 can be 55°, 60°, 65°, 70°, or 75°, etc.

[0078] Similarly, the included angle range between the part of the receiving optical path coupling part 212 located on the base 221 and the base 221 can also be 55° to 75°, which is conducive to the coupling of the received light and better transmit the near-infrared light. When the near-infrared receiving device 132 is located below the lens structural member 220, that is, below the base 221, the receiving optical path coupling part 212 can include a part located on the base 221 and a part located below the base 221. The included angle ranges between the two parts and the base 221 can both be 55° to 75°. Exemplarily, the included angle between the receiving optical path coupling part 212 and the base 221 can be 55°, 60°, 65°, 70°, or 75°, etc.

[0079] The transmitting optical path coupling part 211 and the receiving optical path coupling part 212 can be mutually separated. Exemplarily, refer to Figure 6The structure of the light guide member 210 shown. The light guide member 210 may include a partition portion 213. The partition portion 213 may be disposed between the emission optical path coupling portion 211 and the reception optical path coupling portion 212. And the emission optical path coupling portion 211, the reception optical path coupling portion 212, and the partition portion 213 as a whole may form a cover-like structure. The outer shape of the light guide member 210 may be adapted to the outer shape of the lens barrel 222. Since the light guide member 210 is sleeved on the lens barrel 222, in order for the camera module to capture images normally, the light guide member 210 may also include a light passing hole 214. The light passing hole 214 may be jointly surrounded by the upper ends of the emission optical path coupling portion 211, the reception optical path coupling portion 212, and the partition portion 213. And the position of the light passing hole 214 may correspond to the position of the light passing hole 223 of the lens structural member 220.

[0080] The material of the partition portion 213 may be a material that is low-transmissive or non-transmissive to near-infrared light. For example, it may be a liquid crystal polymer (LCP) material. Also, for example, the material of the partition portion 213 may also be a metal material, such as stainless steel or aluminum alloy and other metal materials. The partition portion 213, the emission optical path coupling portion 211, and the reception optical path coupling portion 212 may be made by a two-color injection molding process.

[0081] It should be noted that Figure 6 a partition portion 213 is also provided at the upper ends of the emission optical path coupling portion 211 and the reception optical path coupling portion 212. The upper end of the partition portion 213 is arranged in an annular structure. The upper ends of the emission optical path coupling portion 211 and the reception optical path coupling portion 212 may also not be provided with a partition portion 213. It is only necessary to ensure that a partition portion 213 is provided between the emission optical path coupling portion 211 and the reception optical path coupling portion 212.

[0082] By providing a partition portion 213 between the reception optical path coupling portion 212 and the emission optical path coupling portion 211, the energy crosstalk problem of the detection device 200 can be reduced. The crosstalk problem is the problem that the near-infrared light emitted by the near-infrared emitter 131 reaches the near-infrared receiver 132 without being reflected by an object outside the device 200. For example, the near-infrared light emitted by the near-infrared emitter 131 reaches the near-infrared receiver 132 after being reflected inside the device. By providing a partition portion 213 between the reception optical path coupling portion 212 and the emission optical path coupling portion 211, the light output outside the optical path portion of the reception optical path coupling portion 212 and the emission optical path coupling portion 211 can be reduced. This light output is likely to be reflected by other components inside the device and reach the near-infrared receiver, thereby reducing the crosstalk energy.

[0083] The number of the near-infrared emission devices 131 may be one or multiple. For example, it may be 3 as shown in the figure. When the number of the near-infrared emission devices 131 is multiple, the emission efficiency of the near-infrared light can be improved, enabling the device 200 to operate at different frequencies or powers. The number of the near-infrared reception devices 132 may be one, and the same near-infrared reception device 132 determines the distance of the object based on the received optical signal.

[0084] One end of the emission optical path coupling part 211 close to the near-infrared emission device 131 may be referred to as the first emission surface 2112, and one end of the emission optical path coupling part 211 far from the near-infrared emission device 131 may be referred to as the second emission surface 2111. One end of the reception optical path coupling part 212 close to the near-infrared reception device 132 may be referred to as the first reception surface 2122, and one end of the reception optical path coupling part 212 far from the near-infrared reception device 132 may be referred to as the second reception surface 2122. When the detection device 200 is operating, the near-infrared light emitted by the near-infrared emission device 131 may enter the emission optical path coupling part 211 from the first emission surface 2112, and may be transmitted along the optical path formed by the emission optical path coupling part 211 to the second emission surface 2111, and then pass through the second emission surface 2111 and be transmitted outside the device. Further, after the emitted near-infrared light is reflected by an object outside the device, it may pass through the second reception surface 2121 and enter the reception optical path coupling part 212, and be transmitted along the optical path formed by the reception optical path coupling part 212 to the first reception surface 2122, and reach the near-infrared reception device 132 after passing through the first reception surface 2122. The near-infrared reception device 132 converts the intensity of the received optical signal into an electrical signal, thereby determining the distance between the device or the electronic device and the object.

[0085] In some embodiments, one end of the reception optical path coupling part 212 far from the near-infrared reception device 132 may include Fresnel teeth. One end of the reception optical path coupling part 212 far from the near-infrared reception device 132 may be the upper end of the reception optical path coupling part 212, that is, the upper end in the z-axis direction shown in the figure. Or, in other words, the second reception surface 2121 may include Fresnel teeth. Refer to Figure 5 the cross-sectional view of the device shown or Figure 6Structural diagram of the light guide member 210 shown. The upper end of the light guide member 210 includes a light passing hole 214. Correspondingly, the upper ends of the receiving optical path coupling portion 212, the transmitting optical path coupling portion 211, and the partition portion can jointly form an annular structure. Furthermore, the Fresnel teeth at the upper end of the receiving optical path coupling portion 212 can be arranged in an arc structure, and the Fresnel teeth can be arranged successively from the position near the light passing hole 214 at the upper end of the receiving optical path coupling portion 212 to the position away from the light passing hole 214. The Fresnel teeth can include a plurality of tooth peaks and tooth valleys, so as to increase the surface area of the end portion of the receiving optical path coupling portion 212. Moreover, the tooth surface between the tooth peaks and tooth valleys can have a certain inclination angle. Thus, the near-infrared light reflected by an object outside the device 200 and reaching the end portion of the receiving optical path coupling portion 212 can be continuously reflected in the area where the Fresnel teeth are located, increasing the coupling efficiency of the received optical signal.

[0086] In some embodiments, the end of the transmitting optical path coupling portion 211 away from the near-infrared emitting device 131 can be in the shape of a convex mirror. Or rather, the second light-emitting surface 2111 of the transmitting optical path coupling portion 211 can be in the shape of a convex mirror, so as to reduce the divergence angle of the near-infrared light emitted by the transmitting optical path coupling portion 212, and thus improve the coupling efficiency of the received light.

[0087] In some embodiments, the side of the transmitting optical path coupling portion 211 away from the camera module can include a first reflective film (not shown in the figure). The side of the transmitting optical path coupling portion 211 away from the camera module is also the upper side of the transmitting optical path coupling portion 211, or can also be referred to as the outer side of the transmitting optical path coupling portion 211. The material of the first reflective film can be a material with low transmittance or non-transmittance of near-infrared light. The first reflective film can be a metal film or a dielectric film. The first reflective film can be a single-layer or multi-layer film structure. Among them, the dielectric film can be a non-metallic compound. When the dielectric film is a multi-layer structure, the multi-layer films can have different refractive indexes to adjust the refraction and reflection of light and reduce the light spillage. The first reflective film can be deposited on at least part of the area of the transmitting optical path coupling portion 211. Exemplarily, the area of the transmitting optical path coupling portion 211 near the light passing hole 214 can be not provided with the first reflective film. For example, the convex mirror-shaped area at the end of the transmitting optical path coupling portion 211 can be not provided with the first reflective film, while the remaining positions of the transmitting optical path coupling portion 211 can be provided with the first reflective film, or the convex mirror-shaped area and at least part of the area near the convex mirror-shaped area can be not provided with the first reflective film, while the remaining positions can be provided with the first reflective film. So that the near-infrared light emitted by the near-infrared emitting device 131 can be emitted outside the device through the area of the transmitting optical path coupling portion 211 where the first reflective film is not provided.

[0088] A first reflective film is provided on the upper side of the emission optical path coupling portion 211, which can reduce the divergence amount of the near-infrared light emitted by the near-infrared emitting device, reduce the problem of near-infrared light overflowing from the upper side of the emission optical path coupling portion 211, improve the light emission efficiency, and thus improve the reception efficiency of the receiving end.

[0089] Similarly, on the side of the reception optical path coupling portion 212 away from the camera module, that is, the upper side of the reception optical path coupling portion 212, a reflective film may also be included, or may be referred to as a second reflective film. The material of the second reflective film may also be a material with low transmittance or non-transmittance of near-infrared light. The material of the second reflective film may be the same as or different from the material of the first reflective film. The second reflective film may be provided on a partial area of the reception optical path coupling portion 212. For example, the second reflective film may not be provided in the area of the reception optical path coupling portion 212 close to the light passing hole 214. For example, the second reflective film may not be provided in the area where the Fresnel teeth 2121 are provided on the reception optical path coupling portion 212, while the second reflective film may be provided in other areas. The near-infrared light reflected by the human body can enter the reception optical path coupling portion 212 through the area where the second reflective film is not provided and be transmitted to the near-infrared receiving device 132.

[0090] Providing a second reflective film on the upper side of the reception optical path coupling portion 212 can reduce the divergence amount of the light transmitted in the reception optical path coupling portion 212, reduce the problem of the light transmitted by the reception optical path coupling portion 212 overflowing from the upper side, and improve the effective energy received by the near-infrared receiving device 132.

[0091] In some embodiments, on the side of the emission optical path coupling portion 211 close to the camera module, a third reflective film (not shown in the figure) may be included. The side of the emission optical path coupling portion 211 close to the camera module is the lower side of the emission optical path coupling portion 211, or may be referred to as the inner side of the emission optical path coupling portion 211. The third reflective film may be plated on the entire area of the emission optical path coupling portion 211 where the near-infrared emitting device 132 is not provided, and the third reflective film may not be provided at the position of the emission optical path coupling portion 211 corresponding to the near-infrared emitting device 131, so that the near-infrared light emitted by the near-infrared emitting device 131 can be transmitted outside the device 200 through the emission optical path coupling portion 211. The third reflective film may also be a metal film or a dielectric film. Providing a third reflective film on the side of the emission optical path coupling portion 211 close to the second circuit board 260 can reduce the crosstalk energy in the device and is beneficial to increasing the capture of effective energy.

[0092] One side of the receiving optical path coupling portion 212 close to the camera module may include a fourth reflective film (not shown in the figure). One side of the receiving optical path coupling portion 212 close to the camera module is also the lower side of the receiving optical path coupling portion 212, or can be referred to as the inner side of the receiving optical path coupling portion 212. The fourth reflective film may be coated on the entire area of the receiving optical path coupling portion 212 where the near-infrared emitting device 131 is not provided, and the fourth reflective film may not be coated at the position of the receiving optical path coupling portion 212 corresponding to the near-infrared emitting device 131, so that the reflected near-infrared light can be transmitted to the near-infrared receiving device through the receiving optical path coupling portion 212. The fourth reflective film may also be a metal film or a dielectric film. Providing the fourth reflective film on one side of the receiving optical path coupling portion 212 close to the camera module can reduce the crosstalk energy in the device and is beneficial to increasing the capture of effective energy.

[0093] The material of the third reflective film and the material of the fourth reflective film may be the same or different, and the materials of the third reflective film, the fourth reflective film, the first reflective film, and the second reflective film may be the same or different. The light guide member 210 may be provided with a reflective film only on the lower side of the transmitting optical path coupling portion and / or the receiving optical path coupling portion, or only on the upper side of the transmitting optical path coupling portion 211 and / or the receiving optical path coupling portion 212, or may also be provided with reflective films on both the upper side and the lower side of the transmitting optical path coupling portion 211 and / or the receiving optical path coupling portion 212, as long as it is ensured that the near-infrared light emitted by the near-infrared emitting device 131 can be transmitted out of the device 200 through the transmitting optical path coupling portion 211, and can be transmitted to the near-infrared receiving device 132 through the receiving optical path coupling portion 212 after being reflected by an object outside the device 200. When reflective films are provided on both the upper side and the lower side of the transmitting optical path coupling portion 211 and the receiving optical path coupling portion 212, that is, reflective films can be provided in the areas of the transmitting optical path coupling portion 211 and the receiving optical path coupling portion 212 except for the first exit surface 2112, the second exit surface 2111, the first receiving surface 2122, and the second receiving surface 2121.

[0094] It should be noted that Figures 3 to 6 In the device shown, the near-infrared emitting device 131, the near-infrared receiving device 132, and the camera module are all electrically connected to the first circuit board 240. The device may also be provided with an additional circuit board electrically connected to the near-infrared emitting device 131 and the near-infrared receiving device 132 (not shown in the figure), and the present application does not limit this.

[0095] Figures 3 to 6 In the device shown, the near-infrared emitting device 131 and the near-infrared receiving device 132 are provided on the first circuit board 240. The near-infrared emitting device 131 and the near-infrared receiving device 132 may also be provided in the camera module, for example Figure 7and Figure 8 as shown. Among them, Figure 7 is a schematic explosion structure diagram of the device 200, Figure 8 is a schematic cross-sectional structure diagram of the device 200, and the Figure 7 and Figure 8 show the relative position of the device and the display screen 110.

[0096] Refer to Figure 7 or Figure 8 For the structure shown, the near-infrared emitting device 131 can be disposed on the first circuit board 240, and the near-infrared receiving device 132 can be disposed in the camera module, for example, on the filter holder 230. The structure of the near-infrared emitting device 131 and the setting of the corresponding emission optical path coupling portion 211 can be similar to the device described in Figures 3 to 6 and will not be elaborated here. For the receiving optical path side, since the near-infrared receiving device 132 is disposed on the filter holder, a light guiding hole 225 can be provided on the lens structural member 220, and the aforementioned light guiding hole 233 may not be provided on the filter holder 230. Moreover, when the various parts of the camera module are stacked on each other, the near-infrared receiving device 132 can be received in the light guiding hole 225. The receiving optical path coupling portion 212 can extend from the upper end position of the lens barrel 221 to the light guiding hole 225 and extend to the surface of the near-infrared receiving device 132.

[0097] Since the near-infrared receiving device 132 is disposed on the filter holder 230, to enable the near-infrared receiving device 132 to operate normally, the near-infrared receiving device 132 can be electrically connected to the first circuit board 240 through an electrical connector 2341. Exemplarily, as Figure 7 or Figure 8As shown, the filter holder 230 may include a boss 234. At least a part of the electrical connector 2341 may be disposed on the boss 234. The electrical connector 2341 and the boss 234 may be formed by an injection molding process, and at least a part of the electrical connector 2341 may be embedded in the boss 234. The near-infrared receiving device 132 may be disposed on the boss 234, and may be disposed on the electrical connector 2341 and electrically connected to the electrical connector 2341. The other end of the electrical connector 2341 may pass through the boss 234 and the filter holder 230 and be electrically connected to the first circuit board 240. In this example, when the lens structural member 220, the filter holder 230, and the first circuit board 240 are stacked on each other, the boss 234 and the near-infrared receiving device 132 may be received in the light guide hole 225 of the lens structural member 220, or a partial area of the near-infrared receiving device 132 may be received in the light guide hole 225, and a partial area may pass through the light guide hole 225 and be located above the base 221, or the whole of the near-infrared receiving device 132 may pass through the light guide hole 225 and be located above the base 221. The filter holder 230 may also not include the boss 234. At least a part of the electrical connector 2341 may be disposed on the filter holder 230, and another part of the electrical connector 2341 may be embedded in the filter holder 230 and extend to the side of the filter holder 230 close to the first circuit board 240 and be electrically connected to the first circuit board 240. The near-infrared receiving device may be disposed on the filter holder 230 and may be disposed on the electrical connector 2341 and electrically connected to the electrical connector 2341 (not shown in the figure).

[0098] It should be noted that Figure 7 and Figure 8 only the near-infrared receiving device 132 disposed on the filter holder 230 is schematically shown. The near-infrared receiving device 132 may also be disposed on the lens structural member 220. When the near-infrared receiving device 132 is disposed on the lens structural member 220, the near-infrared receiving device 132 is disposed on the base of the lens structural member 220, and the lens structural member 220 may not be provided with the aforementioned light guide hole 132. Similarly to Figures 3 to 6 the structure shown Figure 7 and Figure 8The near-infrared emission device 131 shown is also disposed on the first circuit board 240. Similar to the near-infrared reception device 132, the near-infrared emission device 131 can also be disposed on the lens structure member 220, or can also be disposed on the filter holder 230. When the near-infrared emission device 131 is disposed on the filter holder 230, the light guide hole 232 may not be provided on the filter holder 230. When the near-infrared emission device 131 is disposed on the lens structure member 220, the light guide hole may not be provided on both the filter holder 230 and the lens structure member 220. And an electrical connection member may also be provided on the emission optical path side to electrically connect the near-infrared emission device 131 to the first circuit board 240. The present application does not limit the installation positions of the near-infrared emission device 131 and the near-infrared reception device 132. Those skilled in the art can adjust the installation positions of the near-infrared emission device 131 and the near-infrared reception device 132 according to the design requirements of the actual product, as long as it is ensured that the near-infrared reception device 132 and the near-infrared emission device 131 can be electrically connected to the first circuit board 240, and the near-infrared light emitted or received can be transmitted through the corresponding coupling optical path part.

[0099] Figure 7 and Figure 8 The device shown further includes a display screen 110. When the detection device 200 is disposed in the terminal device 100, the light guide member 210, the lens structure member 220, the filter holder 230, and the first circuit board 240 can be sequentially disposed under the display screen 110. The display screen 110 may include a cover glass (CG) 111, a screen display stack 112, and a support member 113. The cover glass 111 can be disposed on the outermost layer of the display screen 110 for protecting the internal structure, and the cover glass 111 can transmit visible light and near-infrared light. The screen display stack 112 can be disposed under the cover glass 111 for generating and displaying images, etc. The support member 113 can be disposed under the screen display stack 112 for supporting the screen display stack 112 and the cover glass 111. The materials of the screen display stack 112 and the support member 113 can be materials that do not transmit or transmit visible light poorly. Therefore, in order for the camera module to work properly, the positions of the screen display stack 112 and the support member 113 corresponding to the light passing hole 223 of the camera module may include a light passing hole 114, or can be referred to as a screen light passing hole 114, such as Figure 8As shown, the position of the light passing hole 223 may correspond to the position of the light passing hole 114. Specifically, the light passing hole 223 may be disposed below the light passing hole 114 along the z-axis direction shown in the figure. The size of the light passing hole 114 of the screen may be larger than the size of the light passing hole 223, and at least a part of the projection of the upper end of the light guiding member 210 in the direction perpendicular to the display screen 110 may overlap with the light passing hole 114, so that the near-infrared light emitted by the near-infrared emitting device 131 can be transmitted through the light passing hole 114 of the screen to the outside of the device, and after being reflected by an object, it can be transmitted through the light passing hole of the screen to the receiving optical path coupling part and then transmitted to the near-infrared receiving device 132.

[0100] When the size of the light passing hole 114 of the screen is larger than the light passing hole 223 of the camera module, ink (not shown in the figure) may be coated below the CG 111, and the ink may be coated on the non-overlapping part of the projection of the light passing hole 114 of the screen in the direction perpendicular to the display screen 110 and the projection of the light passing hole 223 in the direction perpendicular to the display screen 110. The composition of the ink may be a substance that does not transmit visible light but transmits near-infrared light, so as to reduce the visual size of the light passing hole 114 of the screen and prevent users from observing the internal components of the terminal device 100 from outside the display screen 110, which may affect the use experience of the terminal device 100. Moreover, the composition of the ink may be a component that can transmit near-infrared light, so that the device can work properly, that is, the near-infrared light can pass through the light passing hole 114 of the screen to be transmitted to the outside of the display screen 110, or be transmitted from the outside of the display screen 110 into the device 200.

[0101] Figure 9 and Figure 10 Another detection device 200 provided by an embodiment of the present application is shown. An irregular structure may be cut on the surface of the lens structural member 220 in the device 200 to reduce the design size of the light passing hole 114 of the screen. Among them, Figure 9 is the overall structural schematic diagram of the device 200, Figure 10 is the exploded structural diagram of the device 200.

[0102] In the example, the barrel 222 of the lens structural member 220 may include at least two recessed portions. For example, it may include the illustrated recessed portion 226 and recessed portion 227, and the positions of the at least two recessed portions may correspond to the emission optical path coupling portion 211 and the reception optical path coupling portion 212 respectively. The emission optical path coupling portion 211 may be received in the recessed portion 226, and the reception optical path coupling portion 212 may be received in the recessed portion 227. The recessed portion 226 and the recessed portion 227 may extend from one end of the barrel 222 near the light passing hole 223 to the position of the barrel 222 near the base 221, and the shapes of the recessed portion 226 and the recessed portion 227 may be adapted to the inner shapes of the emission optical path coupling portion 211 and the reception optical path coupling portion 212 respectively, so that the emission optical path coupling portion 211 and the reception optical path coupling portion 212 can be as closely attached to the corresponding recessed portions as possible.

[0103] Since the barrel 222 includes at least two recessed portions, a protruding portion 228 will be formed correspondingly between two adjacent recessed portions. When the emission optical path coupling portion 211 and the reception optical path coupling portion 212 are respectively received in the corresponding recessed portions, the protruding portion 228 is located between the emission optical path coupling portion 211 and the reception optical path coupling portion 212, so that the emission optical path coupling portion 211 and the reception optical path coupling portion 212 are separated from each other.

[0104] The barrel 222 includes at least two recessed portions, and a protruding portion may be formed between two adjacent recessed portions. The protruding portion may serve as a partition portion between the emission optical path coupling portion 211 and the reception optical path coupling portion 212, and is used to reduce the crosstalk problem between the emission optical path and the reception optical path. Moreover, since the barrel 222 includes recessed portions and the emission optical path coupling portion 211 and the reception optical path coupling portion 212 are respectively received in the corresponding recessed portions, relative to Figure 3 and Figure 7 the light guide member 210 in the shape of a cover shown, the emission optical path coupling portion 211 and the reception optical path coupling portion 212 move a certain distance towards each other, and the distance between the emission optical path coupling portion 211 and the reception optical path coupling portion 212 is reduced. The size of the screen light passing hole 114 needs to be such that the light transmitted by the emission optical path coupling portion 211 can be transmitted outside the device 200, and the reception optical path coupling portion 212 can receive the light reflected back by an object outside the device 200. The reduction of the distance between the emission optical path coupling portion 211 and the reception optical path coupling portion 212 can reduce the size of the above-mentioned screen light passing hole 114. The reduction of the size of the screen light passing hole 114 can prevent a user from easily observing the internal structural components of the device through the screen light passing hole 114 when using the terminal device, further improving the user experience. Providing recessed portions on the barrel 222 can also reduce the overall mass of the device and the terminal device.

[0105] When the lens barrel 222 includes a recessed portion and the light emitting optical path coupling portion 211 and the light receiving optical path coupling portion 212 are respectively accommodated in the recessed portion, the light guide member 210 may or may not be provided with an additional partition portion 213, as Figure 9 or Figure 10 shown. The partition portion 213 may be provided on the base, and may be provided between the light emitting optical path coupling portion 211 and the light receiving optical path coupling portion 212, for example, it may be provided between the regions of the light emitting optical path coupling portion 211 and the light receiving optical path coupling portion 212 that are not accommodated in the recessed portion. As Figure 9 shown, when the near-infrared light receiving device 132 and the near-infrared light emitting device 131 are provided on the first circuit board 241 or on the filter holder 230, the lens structural member 220 includes light guide holes 224 and 225. And, to prevent the setting of the light guide holes from affecting the strength of structural members such as the lens barrel 222, there may be a certain distance between the light guide holes 224 and 225 and the lens barrel 222. Taking the light emitting optical path as an example, the light emitting optical path coupling portion 211 extends downward from one end close to the light passing hole 223, passes through the light guide hole 224 and extends to the near-infrared light emitting device 131. A part of the region of the light emitting optical path coupling portion 211 is accommodated in the recessed portion 226, a part is accommodated in the light guide hole 224, and another part is located on the base 221 of the lens structural member 220, that is, between the bottom end of the lens barrel 222 and the light guide hole 224. Similarly, a part of the region of the light receiving optical path coupling portion 212 may also be located on the base 221 of the lens structural member 220, and both the light receiving optical path coupling portion 212 and the light emitting optical path coupling portion 211 may have a thickness. The partition portion 213 may be provided between the parts of the light receiving optical path coupling portion 212 and the light emitting optical path coupling portion 211 that are located on the base 221 to reduce the energy crosstalk of this part. The partition portion 213 may also extend from the plane where the base 221 is located to one end of the lens barrel 222 close to the light passing hole 223 to partially cover or completely cover the protruding portion 228 of the lens barrel 222, and the present application does not limit this.

[0106] Figure 9 and Figure 10 In the devices shown, the recessed portion may be formed by an injection molding process. Correspondingly, the lens portion may be formed by an injection molding process and a cutting process (I CUT), and Figure 9 and Figure 10In the lens structural member 220 shown, the recessed portion on the lens barrel 222 may include three connecting surfaces. When the emission optical path coupling portion 211 is received in the recessed portion 226, the inner side surface of the emission optical path coupling portion 211 and the left and right end surfaces adjacent to the inner side surface may respectively be in contact with the three connecting surfaces of the recessed portion 226. Similarly, when the reception optical path coupling portion 212 is received in the recessed portion 227, the inner side surface of the reception optical path coupling portion 212 and the left and right end surfaces adjacent to the inner side surface may respectively be in contact with the three connecting surfaces of the recessed portion 227. And Figure 11 In the lens structural member 220 shown, the recessed portion on the lens barrel 222 may include only one connecting surface. When the emission optical path coupling portion 211 and the reception optical path coupling portion 212 are respectively received in the corresponding recessed portions, the inner side surfaces of the emission optical path coupling portion 211 and the reception optical path coupling portion 212 may be in contact with the connecting surfaces of the corresponding recessed portions. The present application does not limit the shape of the recessed portion, and it is only necessary to ensure that there is an accommodation space on the lens barrel that can accommodate the emission optical path coupling portion 211 and the reception optical path coupling portion 212, and that the emission optical path coupling portion 211 and the reception optical path coupling portion 212 can be isolated from each other.

[0107] Figures 3 to 11 The lens type corresponding to the lens structural member 220 shown may be a fixed-focus camera lens, that is, the focal length of the lens is fixed. In this example, the lens thickness is small, that is, the dimension of the illustrated lens barrel 222 in the z-axis direction is small. The lens type of this camera module may also be an automatic focus (AF) camera lens, that is, the focal length of the lens can be changed, and the corresponding camera module can be called an AF camera module. In the AF camera module, to adapt to the focusing range required by the camera module, the thickness of the lens structural member 220 is usually large, that is, the dimension of the lens barrel 222 in the z-axis direction is large. Correspondingly, there is a large distance between the first circuit board 240 and the screen light passing hole 114. When the light guiding member 210 is provided on the AF lens structural member 220, and the near-infrared emitting device 131 and the near-infrared receiving device 132 are provided on the filter holder 230 or the first circuit board 240, the volume of the light guiding member 210 is large, and the coupling path of the received light and the emitted light is long, which easily reduces the coupling transfer efficiency of the near-infrared light. Therefore, an additional circuit board may be provided to set the near-infrared emitting device 131 and the near-infrared receiving device 132, so as to miniaturize the light guiding member 210 and the detection device 200 and achieve high coupling transfer efficiency of the light guiding member 210.

[0108] See Figures 12 to 14 the structure shown, where Figure 12 is the overall structure schematic diagram of the device 200, Figure 13 is the exploded structure diagram of the device 200, Figure 14Schematic cross-sectional structure diagram of the device 200 along the B-B direction. As Figure 12 or Figure 14 shown, the device 200 may further include a second circuit board 260, which may be electrically connected to the first circuit board 240 and may be stacked with the first circuit board 240, and there may be a certain distance between the two. Exemplarily, the AF camera module may be disposed on the first circuit board 240, that is, similar to the structure shown in Figures 3 to 11 , the filter holder 230 and the lens structure 220 of the AF camera module may be sequentially disposed on the first circuit board 240. The AF camera module may further include components such as a motor (not shown in the figure) for driving the movement of the lens group 2221 in the lens structure 220. The specific structure of the AF camera in this application is not limited. The second circuit board 260 and the AF camera module may be disposed on the same side of the first circuit board 240, and the second circuit board 260 may be disposed at the middle position outside the AF camera module. For example, the second circuit board 260 may be provided with an opening, and the AF camera module passes through the opening of the second circuit board 260, so that the second circuit board 260 may be disposed at the middle position of the outer periphery of the AF camera module, or in other words, part of the structure of the AF camera module may be disposed above the second circuit board 260, and part of the structure may be disposed below the second circuit board 260.

[0109] The near-infrared emitting device 131 and the near-infrared receiving device 132 may be disposed on the second circuit board 260 and may be electrically connected to the second circuit board 260. Similar to the embodiment described in Figures 3 to 11 , the emission optical path coupling part 211 may extend from one end of the lens barrel 222 close to the light passing hole 223 to the position of the near-infrared emitting device 131, and the outer shape structure of the emission optical path coupling part 211 may be adapted to the outer shape structure of the lens barrel 222. The reception optical path coupling part 2112 may also extend from one end of the lens barrel 222 close to the light passing hole 223 to the position of the near-infrared receiving device 132. Since the second circuit board 260 is disposed at a position having a certain distance from the first circuit board 240, and the near-infrared emitting device 131 and the near-infrared receiving device 132 are disposed on the second circuit board 260, the coupling path of the near-infrared light can be shortened, the volume of the light guiding member 210 can be reduced, thereby reducing the volume of the entire detection device 200, and the shortening of the coupling path of the near-infrared light can reduce the divergence of the near-infrared light on the coupling path, thereby improving the coupling efficiency of the near-infrared light and improving the detection sensitivity of the detection device.

[0110] Similarly to when the camera module is a fixed-focus module, when the camera module is an AF camera module, one side of the light-emitting optical path coupling portion 211 away from the camera module may include a first reflective film, and one side of the light-receiving optical path coupling portion 212 close to the camera module may also include a second reflective film (not shown in the figure), reducing the problem of near-infrared light overflowing from the upper side of the light-emitting optical path coupling portion 211 and / or the light-receiving optical path coupling portion 212, and improving the efficiency of light emission and / or light reception. One side of the light-emitting optical path coupling portion 211 close to the camera module may include a third reflective film, and one side of the light-receiving optical path coupling portion 212 close to the camera module may also include a fourth reflective film (not shown in the figure), to reduce the crosstalk energy in the device and increase the capture of effective energy.

[0111] In some embodiments, the device 200 may further include a metal member 215. The metal member 215 may be stacked with the second circuit board 260, and the metal member 215 may be disposed on the outer periphery of the light-emitting optical path coupling portion 211 and the light-receiving optical path coupling portion 212. For example, the metal member 215 may include a through hole 2151, the light guide member may pass through the through hole 2151, and a partial area of the light guide member 210 may be disposed above the metal member 215 and a partial area may be disposed below the metal member 215. The metal member 215 may further include a bracket 216. The bracket 216 may be disposed between the metal member 215 and the second circuit board 260 for supporting the metal member 215. The number of the brackets 216 may be multiple and are distributed at different positions below the metal member 215. Disposing the metal member 215 on the outer periphery of the light guide member 210 can seal and support the light guide member 210. The illustrated bracket 216 has an annular structure. The bracket 216 may also be strip-shaped, block-shaped, irregular-shaped, etc. The present application does not limit the shape of the bracket 216.

[0112] Figures 2 to 14 The illustrated detection device disposes the light guide member 210 on the camera module and uses the light guide member 210 to transmit near-infrared light. The following Figures 15 to 20 The illustrated device 200 may not additionally dispose a light guide member 210 to transmit near-infrared light, but directly use the camera module to transmit near-infrared light.

[0113] First, refer to Figures 15 to 18 the structure of the illustrated device, wherein Figure 15 is a schematic diagram of the setting positions of the camera module 130 and the near-infrared receiving device provided by the embodiment of the present application, Figure 16 is a schematic diagram of the overall structure of the device 200, Figure 17 is an exploded structure schematic diagram of the device 200, Figure 18 is for the device 200 along Figure 15 the cross-sectional structure schematic diagram of the X-X position in Figures 3 to 14Similar to the device shown, the camera module may include a lens structure 220. The material of the lens structure 220 can transmit near-infrared light and cannot transmit visible light. The lens structure 220 may include a lens barrel 222 and a base 221. The material of the lens structure 220 can transmit near-infrared light, which may mean that the material of the lens barrel 222 part of the lens structure can transmit near-infrared light, and the material of the base 221 part can transmit near-infrared light or may not transmit near-infrared light.

[0114] Figures 16 to 18 The device 200 shown may also include a first circuit board 240. The camera module may be disposed on the first circuit board 240 and electrically connected to the first circuit board 240. The near-infrared emitting device 131 may be disposed at one end of the lens structure 220 close to the first circuit board 240, and the near-infrared light emitted by the near-infrared emitting device 211 can be transmitted out of the device 200 through the lens structure 220. Exemplarily, the near-infrared emitting device 131 may be disposed at a position on the base 221 close to the bottom end of the lens barrel 222. The number of the near-infrared emitting devices 131 may be one or more. When the number of the near-infrared emitting devices 131 is multiple, multiple near-infrared emitting devices 131 may all be disposed at a position on the base 221 close to the bottom end of the lens barrel 222, and multiple near-infrared emitting devices 131 may be spaced apart or may be adjacent to each other in sequence. Figure 15 In the figure, two near-infrared emitting devices 131 are exemplarily shown, and the structure in which the two near-infrared emitting devices 131 are disposed opposite to each other along the x-axis direction shown in the figure should not limit the number and the disposed position of the near-infrared emitting devices 131.

[0115] The illustrated lens structure 220 may be disposed on a filter holder 230, and the near-infrared emitting device 131 may also be disposed on the filter holder 230. To enable the near-infrared emitting device 131 to be electrically connected to the first circuit board 240, the device 200 may further include an electrical connector 2341. The electrical connector 2341 may have a folded-line structure, and at least part of the electrical connector 2341 may be disposed on the filter holder 230, and the part disposed on the filter holder 230 may be electrically connected to the near-infrared emitting device 131. For example, the near-infrared emitting device 131 may be disposed on the part of the electrical connector 2341 located on the filter holder 230. The electrical connector 2341 may pass through the filter holder 230 and extend to the first circuit board 240, so that one end of the electrical connector 2341 can be electrically connected to the first circuit board 240, thereby realizing the electrical connection between the near-infrared emitting device 131 and the first circuit board 240.

[0116] In some embodiments, the lens barrel 222 of the lens structure 220 may include at least one inclined surface, and the included angle range between the at least one inclined surface and the plane where the base 221 is located may be 55° to 75°. The included angle range between the at least one inclined surface and the plane where the base 221 is located being 55° to 75° may mean that the included angle range between each inclined surface in the at least one inclined surface and the plane where the base 221 is located can be 55° to 75°, and the lens barrel part corresponding to each inclined surface may have a conical structure. The plane where the base 221 is located may refer to the surface with a larger planar area of the base 221, or may refer to an approximately equivalent plane of the base 221. For the illustrated device 200, the plane where the base 221 is located may be the illustrated xy plane.

[0117] Exemplarily, as Figure 17 or Figure 18 shown, the lens structure may include an inclined surface 2222 and an inclined surface 2223. The included angle ranges between the inclined surface 2222 and the inclined surface 2223 and the plane where the base 221 is located can both be 55° to 75°, and the included angle between the inclined surface 2222 and the plane where the base 221 is located may be the same as or different from the included angle between the inclined surface 2223 and the plane where the base 221 is located. The inclined surface 2222 may be disposed above the inclined surface 2223 along the illustrated z-axis direction, and a step 2224 may be included between the inclined surface 2222 and the inclined surface 2223. The near-infrared light emitted by the near-infrared emitting device 131 may be partially transmitted to the inclined surface 2222 through the inclined surface 2223 and transmitted to the outside of the device 200 through the upper end of the inclined surface 2222. Alternatively, the near-infrared light emitted by the near-infrared emitting device 131 may also be transmitted to the step 2224 through the inclined surface 2223 and led out from the step 2224 and transmitted to the outside of the device 200 through the screen light transmission hole 114.

[0118] The lens structure 220 includes at least one inclined surface, and the included angle range between the at least one inclined surface and the base 221 is 55° to 75°, which can better couple the near-infrared light and transmit the near-infrared light emitted by the near-infrared emitting device 131 to the outside of the device 200.

[0119] The device 200 may further include a near-infrared receiving device 132 for receiving the near-infrared light emitted by the near-infrared emitting device 131 and reflected by an object outside the device. The near-infrared receiving device 132 may be disposed outside the camera module. The near-infrared receiving device 132 being disposed outside the camera module may mean that the projection of the near-infrared receiving device 132 along the direction perpendicular to the display screen 110 does not overlap with the projection of the camera module along the direction perpendicular to the display screen 110.

[0120] As an example, as Figure 15 or Figure 18As shown, the near-infrared receiving device 132 can be disposed below the display screen 110 and can be disposed on either side of the camera module 120. For example, it can be disposed on the right side of the camera module. The near-infrared light emitted by the near-infrared transmitting device 131 is transmitted to the outside of the device 200 through the emission optical path coupling portion 211 and reflected by an object outside the device 200, and then can pass through the display screen 110 to reach the near-infrared receiving device 132. The near-infrared receiving device 132 can be disposed at a position close to the display screen 110 below the display screen 110, so that the near-infrared light can directly reach the near-infrared device 132 after passing through the display screen 110, reducing the divergence of energy during the transmission process.

[0121] The device 200 may further include a third circuit board 270. The near-infrared receiving device 132 can be disposed on the third circuit board 270 and can be electrically connected to the third circuit board 270. The third circuit board 270 can be a PCB or a flexible printed circuit (FPC).

[0122] A partition portion 253 can be disposed between the near-infrared receiving device 132 and the near-infrared transmitting device 131. The material of the partition portion 253 can be a material that does not transmit or transmits near-infrared light poorly, such as LCP. The partition portion 253 can extend upward from the plane of the first circuit board 240 to below the display screen 110, so that the near-infrared receiving device 132 and the near-infrared transmitting device 131 are mutually partitioned, reducing crosstalk energy and preventing the near-infrared light emitted by the near-infrared transmitting device 131 from directly reaching the near-infrared receiving device 132 without being reflected by the human body. The partition portion 253 can be an extension portion of the terminal device housing, and the partition portion 253 can be perpendicular to the plane of the display screen 110, or can be disposed at an angle with the plane of the display screen 110, or can also be in a stepped structure form, etc. The present application does not make a limitation on this, and only requires that the partition portion 253 can reduce the crosstalk energy of the device 200.

[0123] As another example, the near-infrared receiving device 132 can also be disposed on the housing portion of the terminal device 100, as Figure 19 and Figure 20 shown, where Figure 19 is a schematic diagram of the setting positions of the camera module 120 and the near-infrared receiving device 132 in the terminal device 100, Figure 20 is a schematic cross-sectional structure diagram of the device 200 along the Figure 19 Y-Y position in Figure 19 and Figure 20 In the corresponding device, the setting position of the near-infrared transmitting device 131 can be similar to the setting position of the near-infrared transmitting device 131 in the device shown in Figures 15 to 18 and will not be described herein again.

[0124] The housing 140 may include a first part 141 and a second part 142, and the second part 142 may be fixedly connected to the first part 141. Among them, the first part 141 may be the part of the housing 140 close to the display screen 110, and the first part 141 may be disposed at the end of the display screen 110 and fixedly connected to the display screen 110. Exemplarily, the first part 141 may be in the illustrated broken-line structure, the part of the first part 141 parallel to the display screen 110 may be fixedly connected to the display screen 110, and the part of the first part 141 perpendicular to the display screen 110 may be fixedly connected to the second part 142. The first part 141 may also be referred to as the front frame or front shell of the terminal device 100. The second part 142 may be the part of the housing 140 away from the display screen 110, and the second part 142 may also be referred to as the middle frame of the terminal device 100. Exemplarily, a part of the second part 142 may be located at the end of the display screen 110 and perpendicular to the display screen 110 and fixedly connected to the first part 141, and another part of the second part 142 may be parallel to the display screen 110 and may extend to the other end of the display screen 110 to carry various components in the terminal device 100. The material of the housing 140 may transmit near-infrared light. Exemplarily, the material of the housing 140 may be PC. The material of the housing 140 being PC may mean that the material of the first part 141 of the housing 140 is PC, and the material of the second part 142 may or may not transmit near-infrared light.

[0125] Exemplarily, the near-infrared receiving device 132 is disposed at one end of the first part 141. When the second part 142 is disposed outside the first part 141 and fixedly connected to the first part 141, the near-infrared receiving device 132 may be disposed on the side of the first part 141 away from the second part 142. The near-infrared receiving device 132 may be vertically disposed, or rather, the plane where the near-infrared receiving device 132 is located may be perpendicular to the display screen 110. Correspondingly, the third circuit board 270 electrically connected to the near-infrared receiving device 132 may also be vertically disposed, and the third circuit board may be disposed between the near-infrared receiving device 132 and the near-infrared transmitting device 131. Furthermore, the third circuit board 270 can both provide a supporting function for the near-infrared receiving device 132 and isolate the near-infrared transmitting device 131 and the near-infrared receiving device 132 to reduce crosstalk problems.

[0126] It should be noted that Figure 20The near-infrared receiving device 132 shown is disposed on the side of the first part 141 away from the second part 142. The near-infrared receiving device 132 can also be disposed between the first part 141 and the second part 142. For example, the near-infrared receiving device 132 can be disposed between the first part 141 and the second part 142 along the z-axis direction shown in the figure. Another example is that the near-infrared receiving device 132 can also be disposed between the first part 141 and the second part 142 along the x-axis direction shown in the figure. This application does not make any limitations in this regard, and only needs to ensure that the near-infrared receiving device 132 can receive near-infrared light.

[0127] Similar to Figures 3 to 14 the structure of the light guide member 210 in, a reflective film (not shown in the figure) can also be disposed on the side of the lens structure member 220 away from the first circuit board 240. The side of the lens structure member 220 away from the first circuit board 240 is the outer side of the lens structure member 220. The reflective film can be disposed on the barrel 222 portion of the lens structure member 220, and the reflective film can be disposed on at least a part of the area of the barrel 222. For example, it can be disposed on the outer sides of the inclined surfaces 2222, 2223, and the step 2224, so that the emitted near-infrared light can pass through the inclined surface 2223 and the inclined surface 2222 in sequence and be emitted outside the device 200, and the overflow of the emitted light can be reduced.

[0128] The embodiment of the present application also provides a terminal device, which can include any one of the above-mentioned Figures 3 to 20 detection devices described.

[0129] It should be noted that in the embodiment of the present application, two structural members being parallel to each other can mean that the included angle between the two structural members is approximately 0°, rather than absolute parallelism. Similarly, two structural members being perpendicular to each other can mean approximately perpendicular.

[0130] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A detection device, characterized in that, it includes: a camera module; a light guide, at least part of the light guide is arranged on the camera module, the light guide includes a transmitting optical path coupling part and a receiving optical path coupling part, and the transmitting optical path coupling part and the receiving optical path coupling part are mutually separated; a near-infrared emitting device, the near-infrared emitting device is arranged at the end of the transmitting optical path coupling part for emitting near-infrared light, and the emitted near-infrared light can be transmitted outside the device through the transmitting optical path coupling part; a near-infrared receiving device, the near-infrared receiving device is arranged at the end of the receiving optical path coupling part for receiving the near-infrared light emitted by the near-infrared emitting device, and the near-infrared light emitted by the near-infrared emitting device can be transmitted to the near-infrared receiving device through the receiving optical path coupling part after reflection.

2. The device according to claim 1, characterized in that, one end of the transmitting optical path coupling part far from the near-infrared emitting device is in the shape of a convex mirror.

3. The device according to claim 1 or 2, characterized in that, one end of the receiving optical path coupling part far from the near-infrared receiving device includes Fresnel teeth.

4. The device according to any one of claims 1 to 3, characterized in that, the camera module includes a lens structural member, the lens structural member includes a lens barrel and a base, the lens barrel is arranged on the base, the lens barrel includes at least 2 recessed parts, and the transmitting optical path coupling part and the receiving optical path coupling part are respectively accommodated in the corresponding recessed parts.

5. The device according to any one of claims 1 to 4, characterized in that, the device further includes a first circuit board, the camera module is arranged on the first circuit board, and the camera module, the near-infrared emitting device and the near-infrared receiving device are electrically connected to the first circuit board.

6. The device according to any one of claims 1 to 4, characterized in that, the camera module is an autofocus AF camera module, the device further includes a first circuit board and a second circuit board, the second circuit board and the AF camera module are arranged on the same side of the first circuit board, and there is a distance between the second circuit board and the first circuit board; the AF camera module is electrically connected to the first circuit board, the near-infrared emitting device and the near-infrared receiving device are arranged on the second circuit board and are electrically connected to the second circuit board.

7. The device according to claim 6, characterized in that, the device further includes a metal part, and the metal part is arranged on the outer periphery of the transmitting optical path coupling part and the receiving optical path coupling part.

8. The device according to any one of claims 1 to 7, characterized in that, one side of the transmitting optical path coupling part far from the camera module includes a first reflective film.

9. The device according to any one of claims 1 to 8, characterized in that, one side of the receiving optical path coupling part far from the camera module includes a second reflective film.

10. The device according to any one of claims 1 to 9, characterized in that, One side of the emission optical path coupling portion close to the camera module includes a third reflective film.

11. The device according to any one of claims 1 to 10, wherein, One side of the reception optical path coupling portion close to the camera module includes a fourth reflective film.

12. A detection device, wherein, comprises: A camera module, the camera module includes a lens structural member and a lens group, the lens group is disposed within the lens structural member, and the material of the lens structural member is transmissive to near-infrared light; A near-infrared emitting device, the near-infrared emitting device is disposed at an end of the lens structural member for emitting near-infrared light, and the near-infrared light emitted by the near-infrared emitting device can be transmitted through the lens structural member to the outside of the device; A near-infrared receiving device, the near-infrared receiving device is separated from the near-infrared emitting device, and the near-infrared receiving device is used for receiving the near-infrared light emitted by the near-infrared emitting device.

13. The device according to claim 12, wherein, The lens structural member includes a lens barrel and a base, the lens barrel is disposed on the base, the lens barrel includes at least one inclined surface, and the included angle between the at least one inclined surface and the plane where the base is located ranges from 55° to 75°.

14. The device according to claim 12 or 13, wherein, The device further includes a display screen, the near-infrared receiving device is disposed on a side of the display screen close to the camera module, and after the near-infrared light emitted by the near-infrared emitting device is reflected by an object outside the device, it can pass through the display screen and be transmitted to the near-infrared receiving device.

15. The device according to claim 12 or 13, wherein, The device further includes a display screen and a frame body, the frame body is disposed at an end of the display screen and is fixedly connected to the display screen, the material of the frame body is transmissive to near-infrared light, The near-infrared receiving device is disposed within the frame body, and after the near-infrared light emitted by the near-infrared emitting device is reflected by an object outside the device, it can pass through the frame body and be transmitted to the near-infrared receiving device.

16. The device according to claim 15, wherein, The material of the frame body includes polycarbonate.

17. The device according to any one of claims 12 to 16, wherein, The device further includes a first circuit board and a third circuit board, the camera module is disposed on the first circuit board, and the camera module, the near-infrared emitting device and the first circuit board are electrically connected, and the near-infrared receiving device is electrically connected to the third circuit board.

18. The device according to any one of claims 12 to 17, wherein, The material of the lens structural member includes polycarbonate.

19. A terminal device, wherein, comprises a display screen, and the device according to any one of claims 1 to 11, or the device according to any one of claims 12 to 18, the display screen includes a light transmission hole, the position of the light transmission hole corresponds to the position of the camera module, and the light transmission hole is used for transmitting light to the camera module and the device.

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