Distance sensing device and electronic equipment

Abstract

The utility model discloses a distance sensing device and electronic equipment, and belongs to the technical field of electronics. The distance sensing device comprises a shielding shell, a first circuit board, a light emitting assembly, a light receiving assembly and a shading piece. The shielding shell is installed on the first circuit board, the shielding shell and the first circuit board form a containing cavity, and the shielding shell is provided with a light outlet hole and a light inlet hole. The shading piece comprises a body and a retaining wall, the body is connected with the side, facing the first circuit board, of the shielding shell, the retaining wall divides the containing cavity into a first area and a second area, and the body is provided with a first light transmitting hole opposite to the light outlet hole and a second light transmitting hole opposite to the light inlet hole in the two sides of the retaining wall respectively. The light emitting assembly and the light receiving assembly are installed on the first circuit board, the light emitting assembly is located in the first area, and the light receiving assembly is located in the second area. By adopting the technical scheme provided by the invention, the occupied space of the distance sensing device can be reduced.

Description

Technical Field

[0001] This application relates to the field of electronic technologies, and particularly to a distance sensing device and an electronic device. Background Art

[0002] A distance sensor is a sensing device that continuously sends light pulses to a target object, then receives the light returned from the target object, and obtains the distance of the target object by detecting the flight time of the emitted and received light pulses. The data generated and captured by the distance sensor can provide depth information and can be used in application scenarios such as taking pictures, positioning, and face recognition. Currently, devices such as mobile terminals (such as mobile phones), robots, or surveillance cameras are usually equipped with distance sensors to implement functions such as positioning or rapid focusing when the camera function is started. Since the pulsed electromagnetic waves emitted by the distance sensor in the working state will interfere with other signals on the device, the distance sensor is usually shielded.

[0003] In the related art, a distance sensor with a shielding function occupies a relatively large space, and the circuit board used to dock with the distance sensor in the electronic device needs to reserve a relatively large avoidance space for it, reducing the utilization rate of the circuit board. Summary of the Utility Model

[0004] In view of this, embodiments of this application provide a distance sensing device and an electronic device, which can reduce the space occupied by the distance sensing device.

[0005] On the one hand, embodiments of this application provide a distance sensing device, which includes a shielding case, a first circuit board, a light emitting component, a light receiving component, and a light shielding member;

[0006] The shielding case is installed on the first circuit board, and the shielding case and the first circuit board form a receiving cavity. The shielding case is provided with a light outlet hole and a light inlet hole;

[0007] The light shielding member includes a main body and a retaining wall. The main body is connected to the side of the shielding case facing the first circuit board, and the retaining wall divides the receiving cavity into a first area and a second area. The main body is respectively provided with a first light transmission hole opposite to the light outlet hole and a second light transmission hole opposite to the light inlet hole on both sides of the retaining wall;

[0008] The light emitting component and the light receiving component are respectively installed on the first circuit board. The light emitting component is located in the first area, and the light receiving component is located in the second area.

[0009] Optionally, the shielding case includes a light outlet wall and a side wall. One end of the side wall is circumferentially connected to the light outlet wall, and the other end extends away from the light outlet wall and is connected to the first circuit board;

[0010] The light-emitting wall is provided with the light-emitting hole and the light-incident hole.

[0011] Optionally, the side wall includes a first sub-side wall and a second sub-side wall which are oppositely arranged;

[0012] Both the body and the retaining wall are light-impermeable. The body abuts against the light-emitting wall. The retaining wall includes a first side wall, a second side wall and a third side wall which are connected in sequence;

[0013] Wherein, the first side wall and the third side wall respectively abut against the first sub-side wall and the second sub-side wall, and the second side wall abuts against the surface of the first circuit board facing the shielding case.

[0014] Optionally, the orthographic projection area of the body on the first circuit board is equal to the orthographic projection area of the light-emitting wall on the first circuit board.

[0015] Optionally, the light-emitting component includes a driving member and a light source member;

[0016] The driving member is electrically connected to the first circuit board;

[0017] The light source member is electrically connected to the driving member, and the light-emitting side of the light source member is aligned with the first light-transmitting hole.

[0018] Optionally, the distance sensing device further includes a first light filter and a second light filter;

[0019] The first light filter is embedded in the first light-transmitting hole, and the second light filter is embedded in the second light-transmitting hole.

[0020] Optionally, the body and the retaining wall are of an integrally formed structure.

[0021] Optionally, one end of the shielding case connected to the first circuit board extends towards the outside of the shielding case to form a lapping portion;

[0022] The lapping portion is connected to the first circuit board.

[0023] On the other hand, an embodiment of the present application further provides an electronic device, and the electronic device includes the distance sensing device as described in any one of the above.

[0024] Optionally, the electronic device further includes a second circuit board, and the first circuit board is electrically connected to the second circuit board.

[0025] In the distance sensing device provided by the embodiment of the present application, the shielding case is mounted on the first circuit board. An accommodation cavity is formed between the shielding case and the first circuit board. The shielding case is provided with a light-emitting hole and a light-receiving hole to provide an emission channel and a receiving channel for light respectively. The light-shielding member includes a main body and a retaining wall. The main body is provided with a first light-transmitting hole opposite to the light-emitting hole and a second light-transmitting hole opposite to the light-receiving hole on both sides of the retaining wall, so as to ensure that light can be emitted through the first light-transmitting hole and the light-emitting hole in sequence, and ensure that the reflected light can be incident through the light-receiving hole and the second light-transmitting hole in sequence. The retaining wall divides the accommodation cavity into a first area and a second area. Since the light-emitting component and the light-receiving component are located in the first area and the second area respectively, it is possible to prevent interference between the light emitted by the light-emitting component and the light received by the light-receiving component, and ensure the normal propagation of light. With such a setting, since the distance sensing device itself has a shielding function and there is no need to additionally add a shielding member, and the assembly of the light-shielding member in the accommodation cavity and the shielding case is relatively compact, the occupied space of the distance sensing device is greatly reduced, and the utilization rate of the circuit board docked with the distance sensing device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 is an exploded view of a distance sensing device provided by an embodiment of the present application;

[0028] Figure 2 is a cross-sectional schematic view of some structures in a distance sensing device provided by an embodiment of the present application;

[0029] Figure 3 is an exploded view of a light-shielding member, a first light-transmitting member and a second light-transmitting member in a distance sensing device provided by an embodiment of the present application;

[0030] Figure 4 is a schematic structural view of a distance sensing device and a second circuit board provided by an embodiment of the present application.

[0031] Each label in the drawings is as follows:

[0032] 100. Shielding case; 110. Accommodation cavity; 120. Light-emitting hole; 130. Light-receiving hole; 140. Light-emitting wall; 150. Side wall; 160. Lapping portion; 111. First area; 112. Second area; 151. First sub-side wall; 152. Second sub-side wall;

[0033] 200. First circuit board;

[0034] 300, Optical emission component; 310, Driving component; 320, Light source component;

[0035] 400, Optical reception component;

[0036] 500, Light shielding component; 510, Body; 520, Retaining wall; 511, First light transmission hole; 512, Second light transmission hole; 521, First side wall; 522, Second side wall; 523, Third side wall;

[0037] 600, First light filtering component;

[0038] 700, Second light filtering component;

[0039] 800, Second circuit board;

[0040] 900, Light ray.

[0041] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0043] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meaning as commonly understood by those skilled in the art.

[0044] To make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the drawings.

[0045] In conjunction with Figure 1 and Figure 2 As shown, the embodiments of the present application provide a distance sensing device. The distance sensing device includes a shielding case 100, a first circuit board 200, an optical emission component 300, an optical reception component 400, and a light shielding component 500. It should be noted that the first circuit board 200 in the embodiments of the present application may be a printed circuit board or a flexible circuit board. The distance sensing device provided in the embodiments of the present application may be, for example, a TOF (Time of flight) sensor.

[0046] The shielding case 100 is installed on the first circuit board 200. The shielding case 100 and the first circuit board 200 form a receiving cavity 110. The shielding case 100 is provided with a light-emitting hole 120 and a light-incident hole 130. It can be understood that the light 900 can be emitted through the light-emitting hole 120, and the reflected light 900 can be incident through the light-incident hole 130. The shielding case 100 can not only prevent external electromagnetic waves from entering the receiving cavity 110, but also prevent the electromagnetic waves generated by the distance sensing device from leaking out of the receiving cavity 110 to the outside, thus achieving a shielding effect. The shielding case 100 can be made of a metal material.

[0047] The light-shielding member 500 includes a main body 510 and a retaining wall 520. The main body 510 is connected to the side of the shielding case 100 facing the first circuit board 200. The retaining wall 520 divides the receiving cavity 110 into a first region 111 and a second region 112. The light-emitting component 300 and the light-receiving component 400 are respectively installed on the first circuit board 200. The light-emitting component 300 is located in the first region 111, and the light-receiving component 400 is located in the second region 112. It can be understood that the light-shielding member 500 has light-impermeability. By using the retaining wall 520, the light-emitting component 300 and the light-receiving component 400 can be separated, so as to prevent the light 900 emitted by the light-emitting component 300 from interfering with the light 900 received by the light-receiving component 400, and ensure the normal propagation of the light 900.

[0048] The main body 510 is respectively provided with a first light-transmitting hole 511 opposite to the light-emitting hole 120 and a second light-transmitting hole 512 opposite to the light-incident hole 130 on both sides of the retaining wall 520. It can be understood that the retaining wall 520 has light-impermeability, and the regions of the main body 510 other than the first light-transmitting hole 511 and the second light-transmitting hole 512 are all light-impermeable. With such a setting, the light 900 can be emitted through the first light-transmitting hole 511 and the light-emitting hole 120 in sequence, and it is ensured that the reflected light 900 can be incident through the light-incident hole 130 and the second light-transmitting hole 512 in sequence.

[0049] By adopting the distance sensing device provided by the embodiment of the present application, the distance sensing device itself has a shielding function, and there is no need to additionally increase a shielding member. The structural composition is simple, and the space occupied by the distance sensing device can be reduced. Moreover, the assembly of the light-shielding member 500 in the receiving cavity 110 and the shielding case 100 is relatively compact, so the space occupied by the distance sensing device is greatly reduced. When it is necessary to assemble the distance sensing device inside the electronic device, only the first circuit board 200 of the distance sensing device needs to be electrically connected to the circuit board for docking inside the electronic device. Since the distance sensing device occupies a small space, the utilization rate of the circuit board docked with the distance sensing device can be improved, and the internal space of the electronic device can be efficiently utilized. At the same time, since the distance sensing device has fewer components, the manufacturing cost of the distance sensing device can be greatly reduced.

[0050] The following will combine the appended Figures 1 to 4 to provide a more specific and detailed description of the structures and functions of the various components of the distance sensing device provided in the embodiments of the present application.

[0051] As Figure 1 shown, in some embodiments, the shielding case 100 includes a light-emitting wall 140 and a side wall 150. One end of the side wall 150 is circumferentially connected to the light-emitting wall 140, and the other end extends away from the light-emitting wall 140 and is connected to the first circuit board 200. The light-emitting wall 140 is provided with a light-emitting hole 120 and a light-incident hole 130. Thus, the light 900 emitted by the light-emitting component 300 located on the opposite side of the light-emitting wall 140 can be emitted through the light-emitting hole 120, and after being reflected, the light 900 can be incident on the light-receiving component 400 through the light-incident hole 130 to obtain time-of-flight data. It can be understood that an accommodation cavity 110 is formed by enclosing the inner side of the side wall 150, the inner side of the light-emitting wall 140, and the first circuit board 200. It should be noted that one end of the side wall 150 of the shielding case 100 close to the first circuit board 200 can be assembled to the first circuit board 200 by SMT (Surface Mount Technology).

[0052] Combined with Figure 1 and Figure 3 shown, in some embodiments, the side wall 150 includes a first sub-side wall 151 and a second sub-side wall 152 that are oppositely arranged. Both the body 510 and the retaining wall 520 are light-impermeable. The body 510 abuts against the light-emitting wall 140, so that the arrangement between the body 510 and the shielding case 100 can be made more compact, reducing the space occupied by the distance sensing device.

[0053] The retaining wall 520 includes a first side wall 521, a second side wall 522, and a third side wall 523 that are connected in sequence. Among them, the first side wall 521 and the third side wall 523 abut against the first sub-side wall 151 and the second sub-side wall 152 respectively, and the second side wall 522 abuts against the surface of the first circuit board 200 facing the shielding case 100. With such an arrangement, it can be ensured that the light 900 on both sides of the retaining wall 520 is completely separated to avoid mutual interference, thereby ensuring the accuracy of the data obtained by the distance sensing device.

[0054] As Figure 1As shown, in some embodiments, the orthographic projection area of the body 510 on the first circuit board 200 is equal to the orthographic projection area of the light-emitting wall 140 on the first circuit board 200. With such a setting, it can be ensured that the light rays 900 emitted by the light-emitting component 300 towards the side of the light-emitting wall 140 will not be affected by reflection or refraction of the light-emitting wall 140, but directly emit from the light-emitting hole 120, further ensuring the accuracy of the data obtained by the distance sensing device. In some embodiments, the surface area of the first circuit board 200 on the side facing the light-emitting wall 140 may be the same as the area of the orthographic projection of the shielding case 100 on the first circuit board 200, so that the space occupied by the distance sensing device can be further reduced.

[0055] Combined with Figure 1 and Figure 2 As shown, in some embodiments, the light-emitting component 300 includes a driving member 310 and a light source member 320. The driving member 310 is electrically connected to the first circuit board 200. The light source member 320 is electrically connected to the driving member 310, and the light-emitting side of the light source member 320 is aligned with the first light-transmitting hole 511. It should be noted that signals or instructions can be transmitted between two electrically connected components. In response to receiving a driving signal or a driving instruction, the driving member 310 controls the light source member 320 to be in an on state. At this time, the light source member 320 can emit light rays 900, and then the light rays 900 can emit through the first light-transmitting hole 511 and the light-emitting hole 120. The light rays 900 emitted by the light source member 320 can be infrared light, for example. The light-receiving component 400 in the embodiments of the present application can be a light-sensitive chip, for example.

[0056] As Figure 1 and Figure 3 As shown, in some embodiments, the distance sensing device further includes a first filter member 600 and a second filter member 700. The first filter member 600 is embedded in the first light-transmitting hole 511, and the second filter member 700 is embedded in the second light-transmitting hole 512. By the embedding method, the first filter member 600 and the second filter member 700 can be respectively integrated with the body 510 of the light-shielding member 500, reducing the overall thickness of the distance sensing device, and thus further reducing the space occupied by the distance sensing device. It should be noted that the first filter member 600 and the second filter member 700 can be infrared filter sheets respectively. It should be understood that the first filter member 600 and the second filter member 700 can filter out unnecessary light rays and only allow light of a specific wavelength to pass through, for example, only allowing infrared laser to pass through. In the distance sensing device, the first filter member 600 and the second filter member 700 can help enhance the target signal, reduce background noise, and improve the sensitivity and reliability of the time-of-flight device.

[0057] As Figure 1As shown, in some embodiments, the body 510 and the retaining wall 520 are integrally formed structures. This can improve the stability of the light-shielding member 500. It should be noted that the light-shielding member 500 can be processed by a dispensing process within the shielding case 100. The portion of the light-shielding member 500 other than the first light-transmitting hole 511 and the second light-transmitting hole 512 can be black, so as to better isolate the light 900 on both sides of the retaining wall 520 and improve the accuracy of the distance sensing device for collecting light flight data.

[0058] Combined with Figure 1 and Figure 2 As shown, in some embodiments, one end of the shielding case 100 connected to the first circuit board 200 extends outward from the shielding case 100 to form a lapping portion 160. The lapping portion 160 is connected to the first circuit board 200. With such a setting, the contact area between the shielding case 100 and the first circuit board 200 can be increased, and the stability and reliability of the connection between the shielding case 100 and the first circuit board 200 are enhanced.

[0059] Combined with Figures 1 to 4 As shown, on the other hand, an embodiment of the present application further provides an electronic device, and the electronic device includes a distance sensing device as described in any one of the above. It should be noted that the composition and functions of the distance sensing device in the electronic device are the same as those of the distance sensing device provided in the embodiments of the present application, so the embodiments of the present application will not be described in detail here. The electronic device provided by the embodiments of the present application can be a mobile terminal, a robot, a monitoring camera, or other devices with functions such as photographing, positioning, or face recognition. In the process of implementing the above functions, the distance sensing device can be used to obtain relevant data on the distance between the electronic device and the target object, that is, distance measurement can be performed.

[0060] As Figure 4 shown, in some embodiments, the electronic device further includes a second circuit board 800, and the first circuit board 200 and the second circuit board 800 are electrically connected. It should be noted that the second circuit board 800 can be a printed circuit board or a flexible circuit board. Since the distance sensing device itself has a compact structure and occupies a small space, the distance sensing device will occupy a small space on the second circuit board 800. That is to say, only a small avoidance space needs to be reserved on the second circuit board 800 for the distance sensing device. In this way, the remaining space on the second circuit board 800 is larger, which can be used to install more other devices, improving the utilization rate of the second circuit board 800 and also making it possible to more fully utilize the internal space of the electronic device and facilitate layout.

[0061] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plurality" means two or more unless otherwise clearly defined.

[0062] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only illustrative.

[0063] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A distance sensing device, characterized in that, The distance sensing device includes a shielding case (100), a first circuit board (200), a light emitting component (300), a light receiving component (400), and a light shielding member (500); The shielding case (100) is mounted on the first circuit board (200). The shielding case (100) and the first circuit board (200) form a receiving cavity (110). The shielding case (100) is provided with a light emitting hole (120) and a light entering hole (130); The light shielding member (500) includes a body (510) and a retaining wall (520). The body (510) is connected to a side of the shielding case (100) facing the first circuit board (200). The retaining wall (520) divides the receiving cavity (110) into a first region (111) and a second region (112). The body (510) is respectively provided with a first light transmitting hole (511) opposite to the light emitting hole (120) and a second light transmitting hole (512) opposite to the light entering hole (130) on both sides of the retaining wall (520); The light emitting component (300) and the light receiving component (400) are respectively mounted on the first circuit board (200). The light emitting component (300) is located in the first region (111), and the light receiving component (400) is located in the second region (112).

2. The distance sensing device according to claim 1, characterized in that, The shielding case (100) includes a light emitting wall (140) and a side wall (150). One end of the side wall (150) is circumferentially connected to the light emitting wall (140), and the other end extends away from the light emitting wall (140) and is connected to the first circuit board (200); The light emitting hole (120) and the light entering hole (130) are provided on the light emitting wall (140).

3. The distance sensing device according to claim 2, wherein The side wall (150) includes a first sub-side wall (151) and a second sub-side wall (152) arranged oppositely; Both the body (510) and the retaining wall (520) are light-impermeable. The body (510) abuts against the light emitting wall (140). The retaining wall (520) includes a first side wall (521), a second side wall (522), and a third side wall (523) connected in sequence; Wherein, the first side wall (521) and the third side wall (523) respectively abut against the first sub-side wall (151) and the second sub-side wall (152), and the second side wall (522) abuts against a surface of the first circuit board (200) facing the shielding case (100).

4. The distance sensing device according to claim 3, wherein The orthographic projection area of the body (510) on the first circuit board (200) is equal to the orthographic projection area of the light emitting wall (140) on the first circuit board (200).

5. The distance sensing device according to claim 1, wherein The light emitting component (300) includes a driving member (310) and a light source member (320); The driving member (310) is electrically connected to the first circuit board (200); The light source member (320) is electrically connected to the driving member (310). The light emitting side of the light source member (320) is aligned with the first light transmitting hole (511).

6. The distance sensing device according to claim 1, characterized in that, The distance sensing device further includes a first light filter (600) and a second light filter (700); The first light filter (600) is embedded in the first light transmission hole (511), and the second light filter (700) is embedded in the second light transmission hole (512).

7. The distance sensing device according to claim 1, wherein The main body (510) and the retaining wall (520) are integrally formed.

8. The distance sensing device according to claim 1, characterized in that, One end of the shielding case (100) connected to the first circuit board (200) extends outward from the shielding case (100) to form a lapping portion (160); The lapping portion (160) is connected to the first circuit board (200).

9. An electronic device, characterized in that, The electronic device includes the distance sensing device according to any one of claims 1 to 8.

10. The electronic device according to claim 9, characterized in that, The electronic device further includes a second circuit board (800), and the first circuit board (200) is electrically connected to the second circuit board (800).

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