Light detection component and wearable device

Abstract

The embodiment of the present application provides a light detection component and a wearable device. The light detection component has a transmitting light component, a receiving light component and a lens. The light emitted by the transmitting light component can enter the human skin through the lens and be reflected from the human skin to the outside. The part of the reflected light can be received by the receiving light component. The part of the reflected light can carry a blood flow signal, which is a useful light signal; wherein, the light emitted by the transmitting light can also be reflected inside the lens and received by the receiving light component. The part of the reflected light does not contain a blood flow signal, which is a useless light signal, and it is necessary to eliminate the part of the reflected light as much as possible. In this solution, a first structure is carved inside the lens. The first structure can block the light reflected inside the lens, that is, eliminate part of the useless light signal, thereby reducing the intensity of the useless light received by the receiving light component, thereby improving the accuracy of detection when using the light detection component to detect body parameters such as heart rate.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a light detection component and a wearable device. Background Art

[0002] With the rapid improvement of the level of informatization and the increasing attention people pay to physical health, the demand and application of wearable devices that can monitor physical conditions (especially heart rate) in real time are gradually increasing. At present, in order to monitor heart rate, a heart rate monitoring device can be configured in a wearable device. Generally, the heart rate monitoring device can be an optical heart rate sensor. Among them, the heart rate can be monitored by photoplethysmograph (PPG). However, during the monitoring process, the optical heart rate sensor often generates useless light signals (i.e., noise signals), which affect the corresponding useful light signals, resulting in a poor signal-to-noise ratio of the optical heart rate sensor signal, affecting the detection results. Summary of the invention

[0003] The embodiments of the present application provide a light detection component and a wearable device, the main purpose of which is to provide a method that can improve the signal-to-noise ratio of the signal received by the light detection component, thereby improving the accuracy of the light detection component and the wearable device equipped with the light detection component in detecting body parameters such as heart rate.

[0004] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0005] In a first aspect, the present application provides an optical detection component, which may include: at least one emitting light component, at least one receiving light component and a lens, wherein the lens is located on the light emitting side of at least one emitting light component, and the light emitted by at least one emitting light component passes through the lens and is received by at least one receiving light component after reflection; the interior of the lens has at least one first structure, and the projection of at least one first structure on the first surface of the lens is a first projection, and the first projection may be a ring-shaped figure; the projection of at least one emitting light component on the first surface is a second projection, and the projection of at least one receiving light component on the first surface is a third projection; wherein the second projection is located in the first projection and / or the third projection is located in the first projection.

[0006] Therefore, by setting a first structure projected as a ring-shaped figure in the lens to block the light emitted by the emitting light component reflected by the inside of the lens, the intensity of useless light received by the receiving light component is reduced, thereby improving the signal-to-noise ratio of the signal received by the receiving light component, and improving the detection accuracy when using the light detection component to detect body parameters such as heart rate.

[0007] In a possible implementation, the first structure may include a plurality of substructures, and the plurality of substructures may be arranged in sequence and spaced from the inner surface of the lens toward the outer surface. Thus, the multi-layer structure may be used to block useless light, thereby blocking useless light to the greatest extent and improving detection accuracy while ensuring the reliability of the lens.

[0008] In a possible implementation, the shapes and sizes of the plurality of sub-structures are the same. For example, the shapes of the plurality of sub-ring structures can all be circular.

[0009] In the direction from the inner surface of the lens to the outer surface, multiple substructures can be coaxially arranged (i.e. Figure 3 That is to say, in the direction from the inner surface of the lens toward the outer surface, the central axes of the multiple substructures are the same axis, thereby facilitating the processing of the substructures and reducing the processing difficulty.

[0010] In addition, in the direction from the inner surface of the lens toward the outer surface, the central axes of the multiple substructures may be at least partially different, and the projections of the multiple substructures on the first surface may overlap in at least a portion of their regions. The overlap of at least a portion of the projections of the multiple substructures on the first surface may facilitate the projections of the multiple substructures on the first surface to form a ring-shaped figure.

[0011] In a possible implementation, at least one of the shapes and sizes of the multiple substructures is different, and the projections of the multiple substructures on the first surface overlap at least partially. The overlapping of the projections of the multiple substructures on the first surface can facilitate the projections of the multiple substructures on the first surface to form a ring-shaped figure.

[0012] Wherein, in the direction from the inner surface of the lens to the outer surface, the multiple substructures are coaxially arranged. That is to say, in the direction from the inner surface of the lens to the outer surface, the central axes of the multiple substructures are the same axis, thereby facilitating the processing of the substructures and reducing the processing difficulty. Exemplarily, the multiple substructures are of the same shape but different sizes, and in the direction from the inner surface of the lens to the outer surface, the substructures are reduced from large to small. In this case, the first structure composed of the multiple substructures is a conical structure.

[0013] In addition, in the direction from the inner surface of the lens toward the outer surface, the central axes of the multiple substructures are at least partially different, and the projections of the multiple substructures on the first surface at least partially overlap. The overlapping of the projections of the multiple substructures on the first surface at least partially can facilitate the projections of the multiple substructures on the first surface to form a ring-shaped figure.

[0014] In a possible implementation manner, the plurality of substructures are arranged equidistantly in a direction from the inner surface of the lens toward the outer surface.

[0015] In a possible implementation, the shape of the substructure is a closed figure. Exemplarily, the closed figure can be a regular figure. Among them, the closed figure can be a regular figure such as a circle, a rectangle, a diamond, a triangle, etc.

[0016] In a possible implementation, the first structure is arranged in a spiral shape in the direction from the inner surface of the lens toward the outer surface, thereby shielding useless light to the greatest extent by the first structure. Exemplarily, the spiral shape is an equidistant spiral.

[0017] In one possible implementation, there are one or more light emitting components, the projection of the light emitting components on the first surface includes one or more second projections, the interior of the lens has one or more first structures, the projection of the one or more first structures on the first surface includes one or more first projections, and the one or more second projections are all located in the one first projection or in one first projection among the multiple first projections. In other words, the projections of each light emitting component on the first surface of the lens are all located in the projection of a first structure on the first surface of the lens. In this way, by providing a first structure for all light emitting components and shielding useless light from one side of the emitting light path, the detection accuracy of the light detection component can be improved with a small number of first structures (with relatively simple processing technology).

[0018] In a possible implementation, there are multiple light-emitting components, and the projection of the light-emitting components on the first surface includes multiple second projections. The interior of the lens has multiple first structures, and the projections of the multiple first structures on the first surface include multiple first projections; wherein each second projection is respectively located in one of the multiple first projections; or, at least two of the multiple second projections are located in one of the multiple first projections. In other words, the projections of each light-emitting component on the first surface of the lens can be respectively located in the projection of a first structure on the first surface of the lens, that is, the projection of one light-emitting component corresponds to the projection of one first structure; or, the projections of a part of the multiple light-emitting components (greater than or equal to two, and less than the total number of light-emitting components) on the first surface of the lens can all be located in the projection of one first structure on the first surface of the lens; in addition, the projections of the remaining light-emitting components on the first surface of the lens can be located in the projections of other first structures on the first surface of the lens. In this way, by setting a first structure for each emitting light component, or by setting a first structure for at least two of the multiple emitting light components according to the layout of the emitting light components, it is possible to more effectively shield useless light from one side of the emitting light path, thereby improving the detection accuracy of the light detection component.

[0019] In one possible implementation, there are one or more light receiving components, the projection of the light receiving components on the first surface includes one or more third projections, the interior of the lens has one or more first structures, the projection of the one or more first structures on the first surface includes one or more first projections, and the one or more third projections are all located in the one first projection or in one first projection among the multiple first projections. In other words, the projections of each light receiving component on the first surface of the lens are all located in the projection of a first structure on the first surface of the lens. In this way, by providing a first structure for all light receiving components and shielding useless light from one side of the receiving light path, the detection accuracy of the light detection component can be improved with a small number of first structures (with relatively simple processing technology).

[0020] In a possible implementation, there are multiple light-receiving components, and the projection of the light-receiving components on the first surface includes multiple third projections. The interior of the lens has multiple first structures, and the projection of the multiple first structures on the first surface includes multiple first projections; wherein each third projection is respectively located in one of the multiple first projections; or, at least two of the multiple third projections are located in one of the multiple first projections. In other words, the projections of each light-receiving component on the first surface of the lens can be respectively located in the projection of a first structure on the first surface of the lens, that is, the projection of one light-receiving component corresponds to the projection of one first structure; or, the projections of a part of the multiple light-receiving components (greater than or equal to two, and less than the total number of light-receiving components) on the first surface of the lens can all be located in the projection of one first structure on the first surface of the lens; in addition, the projections of the remaining light-receiving components on the first surface of the lens can also be located in the projections of other first structures on the first surface of the lens. In this way, by setting a first structure for each light receiving component, or by setting a first structure for at least two of the multiple light receiving components according to the layout of the light receiving components, it is possible to more effectively shield useless light from one side of the light receiving path, thereby improving the detection accuracy of the light detection component.

[0021] In a possible implementation, there are multiple emitting light components, and the projection of the emitting light components on the first surface includes multiple second projections; there are multiple receiving light components, and the projection of the receiving light components on the first surface includes multiple third projections; the interior of the lens has multiple first structures, and the projections of the multiple first structures on the first surface include multiple first projections; wherein each first projection wraps around a second projection or a third projection. In this way, by providing a first structure for each receiving light component and a first structure for each emitting light component, it is possible to more effectively shield useless light from one side of the receiving light path and one side of the emitting light path, thereby shielding useless light to the greatest extent, so as to better improve the detection accuracy of the light detection component.

[0022] Exemplarily, a part of the multiple first projections may completely cover the multiple second projections. In this case, each second projection may correspond to one first projection, or multiple second projections may correspond to one first projection. Meanwhile, another part of the multiple first projections may completely cover the multiple third projections. In this case, each third projection may correspond to one first projection, or multiple third projections may correspond to one first projection.

[0023] In addition, when a portion of the first projections in the plurality of first projections can completely cover the plurality of second projections, a portion of the third projections in the plurality of third projections can be completely covered by another portion of the first projections in the plurality of first projections. Alternatively, when a portion of the first projections in the plurality of first projections can completely cover the plurality of third projections, a portion of the second projections in the plurality of second projections can be completely covered by another portion of the first projections in the plurality of first projections.

[0024] In a possible implementation, the first structure is carved into the lens, and the first structure is isolated from the outside of the lens, so that the first structure can be prevented from contacting the outside, thereby improving the rigidity of the lens.

[0025] In a possible implementation, the first surface may be an inner surface or an outer surface of the lens. For example, the inner surface may be a surface of the lens close to the emitting light component and the receiving light component, and the outer surface may be a surface of the lens away from the emitting light component and the receiving light component.

[0026] In a second aspect, the present application provides a wearable device, which may include the light detection component provided by the above-mentioned first aspect and any implementation method of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the structure of a smart watch provided in an embodiment of the present application;

[0028] Figure 2 is a light path diagram of light emitted by a smart watch at a measured part provided by an embodiment of the present application;

[0029] Figure 3 is a cross-sectional schematic diagram of an upper body of a smart watch provided in an embodiment of the present application;

[0030] Figure 4 It is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in a watch body of a smart watch provided in an embodiment of the present application;

[0031] Figure 5 is a schematic diagram of another annular structure in a lens provided in an embodiment of the present application;

[0032] Figure 6a It is a schematic diagram of arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application;

[0033] Figure 6b is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0034] Figure 6c is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0035] Figure 6d is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0036] Figure 7a This is a schematic diagram of the arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application;

[0037] Figure 7b is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0038] Figure 7c is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0039] Figure 7d is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0040] Figure 8a It is a schematic diagram of arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application;

[0041] Figure 8b is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0042] Figure 9a It is a schematic diagram of arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application;

[0043] Figure 9b is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0044] Fig.9cis a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0045] Figure 9d is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0046] Fig.10a It is a schematic diagram of arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application;

[0047] Fig.10b is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0048] Fig.11a It is a schematic diagram of arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application;

[0049] Fig.11b is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0050] Fig.11c is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0051] Fig.11d is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0052] Fig.11e is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0053] Fig.12a It is a schematic diagram of arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application;

[0054] Figure 12b is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0055] Fig.13a It is a schematic diagram of arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application;

[0056] Fig.13b is a schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smart watch provided in an embodiment of the present application;

[0057] Fig.14 This is a schematic diagram of the arrangement of a transmitting light component and a receiving light component on a substrate in another smart watch provided in an embodiment of the present application.

[0058] In the figure:

[0059] 11-watch body; 12-watch strap; 21-shading component;

[0060] 111 - transmitting optical component; 112 - receiving optical component; 113 - lens; 114 - substrate;

[0061] 1131-first structure; 11311-substructure. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0063] The terms used in the following embodiments are only for the purpose of describing specific embodiments, and are not intended to be used as limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" refer to one or more (including two). The term "and / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0064] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Thus, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that 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 other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. The term "connected" includes direct and indirect connections, unless otherwise stated.

[0065] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0066] In the embodiments of the present application, the words "exemplarily" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0067] The embodiment of the present application provides a light detection component and a wearable device. Among them, the light detection component can be used to detect the user's dynamic heart rate, static heart rate, blood oxygen saturation and other physical parameters. The light detection component can be configured in a wearable device. Among them, the wearable device can be worn on the user's body, or integrated into the user's clothes or accessories, which is not limited here. When a light detection component can be configured in the wearable device, the user's dynamic heart rate, static heart rate, blood oxygen saturation and other physical parameters can be detected by the light detection component. Exemplarily, the wearable device includes but is not limited to smart watches, smart bracelets, smart glasses, etc., which are not limited here. For the sake of ease of description, the technical solution provided in the embodiment of the present application is described below by taking the wearable device as a smart watch as an example. It can be understood that the smart watch can also be replaced by other wearable devices, which is not limited here.

[0068] For example, Figure 1 Schematic diagram of the structure of a smart watch provided by an embodiment of the present application. Figure 1 As shown, the smart watch may include a watch body 11 and a watch strap 12 connected to the watch body 11. The watch strap 12 may be non-detachably connected to the watch body 11, such as an integrally formed design, or may be detachably connected, such as a snap-on connection, etc., which is not limited here. It is understandable that in some embodiments, the watch body 11 may also be referred to as a device body, and the watch strap 12 may also be referred to as a flexible fixing belt. The flexible fixing belt may be implemented by a section of flexible strip, or may be implemented by multiple sections of flexible strips, which is not limited here.

[0069] The watch body 11 can emit light of at least one optical band, which can enter the human body and be partially absorbed by the blood and / or tissues in the human body and then reflected from the inside of the human skin to the outside of the human skin. Afterwards, the watch body 11 can receive the reflected light and calculate one or more body parameters such as dynamic heart rate, static heart rate, and blood oxygen saturation based on the change in the intensity of the reflected light based on the principle of photoelectric detection of changes in blood volume with pulse pulsation.

[0070] For example, see Figure 1 , the watch body 11 may include a light detection component and a substrate (not shown in the figure). The light detection component may include at least one light emitting component 111, at least one light receiving component 112, and a lens 113. The light emitting component 111 and the light receiving component 112 are both fixedly mounted on the substrate, and the light emitting component 111 and the light receiving component 112 are located on the same side of the substrate. The lens 113 is located on the light emitting side of the light emitting component 111, and it may be fixedly mounted on the substrate or on the watch body 11, which is not limited here. The lens 113 is mainly used to make the light emitted by the light emitting component 111 be emitted from the inside of the watch body 11 to the outside of the watch body 11, and to make the light receiving component 112 receive the light outside the watch body 11. In Figure 1 In the embodiment, there is one emitting light component 111 and four receiving light components 112. It is understandable that the number of emitting light components 111 and receiving light components 112 and their layout on the watch body 11 can be selected according to actual conditions and are not limited here.

[0071] In this embodiment, the light emitting component 111 can emit light of at least one wavelength band, and the light receiving component 112 can receive light of at least one wavelength band. The light emitted by the light emitting component 111 can pass through the lens 113 to the outside of the watch body 11, and the light outside the watch body 11 can pass through the lens 113 to enter the inside of the watch body 11 and be received by the light receiving component 112. Exemplarily, the light emitting component 111 can be a light-emitting diode (LED), the light receiving component 112 can be a photodiode (PD), and the substrate 114 can be a printed circuit board (PCB). Exemplarily, the lens 113 can be a convex lens, a Fresnel lens, or other light-transmitting mirrors, which are not limited here. Exemplarily, the material of the lens 113 can be, but not limited to, glass, crystal, etc. It can be understood that in this embodiment, the lens 113 is only for schematic illustration, and it can also be replaced by other devices that can make the light inside the watch body 11 emit to the outside, and make the light outside the watch body 11 enter the inside of the watch body 11, as long as it can achieve the same effect as the lens 113, and no limitation is made here.

[0072] Generally, after the light emitting component 111 emits light, there will be three parts of reflected light. Figure 2 As shown (in order to better show the optical path of the optical detection component, only one emitting light component 111 and one receiving light component 112 are shown), the first part of the reflected light R1 is the light reflected by the surface (i.e., the inner surface) of the lens 113 close to the receiving light component 111, the second part of the reflected light R2 is the light reflected by the surface (i.e., the outer surface) of the lens 113 away from the receiving light component 111, and the third part of the reflected light R3 is the light emitted by the emitting light component 111. A part of it is absorbed inside the human skin tissue S and reflected from the inside of the human skin tissue S to the outside. Among them, the first part of the reflected light R1 and the second part of the reflected light R2 are both useless light (i.e., useless signals), and the third part of the reflected light R3 is useful light (i.e., useful signals). During the detection process, the first part of the reflected light R1 and the second part of the reflected light R2 will affect the detection results. If these two parts of reflected light are strong, it will easily cause the receiving light component 112 to reach a saturated state when receiving these two parts of reflected light, thereby causing the detection to fail. In addition, even if these two parts of reflected light are weak, detection noise will be introduced, affecting the detection results, resulting in low detection accuracy.

[0073] Continue reading Figure 2For the first part of the reflected light R1, a shading component 21 (for example, black foam, etc.) can be added between the emitting light component 111 and the receiving light component 112 to block this part of the reflected light. Exemplarily, the shading component can be bonded to the substrate 114. For the second part of the reflected light R2, a grating can be pasted on the inner surface of the lens 113 for blocking, but this method can only block the reflected light at a certain angle, and cannot block most of the reflected light, and at the same time the grating also blocks part of the third part of the reflected light R3. Since the first part of the reflected light R1 can be completely blocked, the first part of the reflected light R1 has less impact on the detection, while the second part of the reflected light R2 is difficult to effectively block, so the second part of the reflected light R2 has a greater impact on the detection.

[0074] In order to reduce the influence of the second part of the reflected light R2 on the detection, in the embodiment of the present application, a first structure (such as a circular structure, a rectangular structure, a diamond structure, a triangular structure, etc.) that can wrap the projection of the emitting light component 111 and / or the receiving light component 112 on the lens 113 is engraved inside the lens 113 to reduce the light transmittance of the lens 113, thereby blocking the second part of the reflected light R2, thereby achieving the purpose of light shielding. It can be understood that in the embodiment of the present application, the laser engraving technology can be used to engrave the first structure inside the lens 113. Among them, the principle of the laser engraving technology is: a three-dimensional model is made by a computer, and a three-dimensional image is generated after computer calculation and processing; then, laser technology is used to control the deflection of the laser through a galvanometer, and two laser beams are shot into a transparent object (such as glass, crystal, etc.) from different angles, and the two laser beams are accurately intersected at one point. Because the two laser beams interfere and cancel each other at the intersection, the energy of the two laser beams can be converted from light energy to internal energy, thereby releasing a large amount of heat, melting the point to form a tiny cavity. When the two laser beams are controlled to intersect at different locations, a large number of tiny holes can be created, which eventually form the desired pattern.

[0075] For example, Figure 3 is a partial cross-sectional schematic diagram of the upper body of a smart watch provided in an embodiment of the present application, Figure 4 Schematic diagram of the projection of the light emitting component and the light receiving component on the lens in the watch body of the smart watch provided by the embodiment of the present application. Figure 3 and 4As shown, a first structure 1131 is engraved in the lens 113, and the projection of the first structure 1131 on the inner surface or outer surface of the lens 113 is projection n, and the projection n can be a ring-shaped figure. Exemplarily, the ring-shaped figure can be a closed figure. In addition, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 is projection m; the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 is projection p. Among them, projection n can wrap projection m; and at this time, projection p is not wrapped by projection n. Exemplarily, the first structure 1131 can include one or more substructures 11311; preferably, the substructure 11311 can be 2-4. Among them, multiple substructures 11311 can be arranged in sequence from the inner surface of the lens 113 to the outer surface. Exemplarily, the shape of the substructure 11311 can be a closed figure. Exemplarily, when the first structure 1131 includes multiple substructures 11311, the inner diameters of different substructures 11311 may be the same or different; similarly, the outer diameters of different substructures 11311 may also be the same or different, as long as the projection n of the first structure 1131 formed by the multiple substructures 11311 on the surface of the lens 113 can cover the projection m of the emitting light component 111 on the surface of the lens 113 and does not block the light emitted by the emitting light component 111 through the lens 113.

[0076] In one example, see Figure 3 When the first structure 1131 includes a plurality of substructures 11311, the plurality of substructures 11311 may be arranged equidistantly in the Y direction, for example, a substructure 11311 may be arranged at a distance L in the Y direction. Of course, the plurality of substructures 11311 may also be arranged unequally, which may be determined according to actual conditions and is not limited here.

[0077] In one example, see Figure 3 When the first structure 1131 includes a plurality of substructures 11311, the shapes and sizes of the plurality of substructures 11311 may be the same. In this case, in the Y direction, the plurality of substructures 11311 may be coaxially arranged, that is, the central axes of the plurality of substructures 11311 in the Y direction are the same axis.

[0078] In addition, in the Y direction, at least two substructures 11311 of the multiple substructures 11311 may not be coaxially arranged. Exemplarily, the central axes of the multiple substructures 11311 are at least partially different, and the projections of the multiple substructures 11311 on the first surface of the lens 113 overlap at least partially, and the projections of the multiple substructures 11311 on the first surface of the lens 113 may form a ring-shaped figure.

[0079] In one example, see Figure 3When the first structure 1131 includes a plurality of substructures 11311, at least one of the shapes and sizes of the plurality of substructures 11311 may also be different. In this case, the projections of the plurality of substructures 11311 on the first surface of the lens 113 overlap at least partially. In this case, the projections of the plurality of substructures 11311 on the first surface of the lens 113 may form a ring-shaped figure. In the Y direction, the plurality of substructures 11311 may be coaxially arranged, that is, the central axes of the plurality of substructures 11311 in the Y direction are the same axis. In addition, in the Y direction, at least two of the plurality of substructures 11311 may not be coaxially arranged. Exemplarily, the central axes of the plurality of substructures 11311 are at least partially different.

[0080] It is understood that in this embodiment, the closed figure can be a regular figure, such as a circle, rectangle, diamond, triangle, etc. Of course, the closed figure can also be an irregular figure, which can be determined according to the actual situation. Exemplarily, the regular figure can be a figure that can be defined and / or named, and the irregular figure can be a figure that cannot be defined and / or named.

[0081] In addition, in this embodiment, the closed figure can be a completely closed figure or an approximately closed figure. Exemplarily, when the closed figure is an approximately closed figure, the closed figure can be a figure with a certain gap, for example, a figure with a gap of 0.1 mm.

[0082] It can be understood that if one substructure 11311 is arranged in the first structure 1131 to block a% of the second partial reflected light R2, then after arranging n substructures 11311, n*a% of the second partial reflected light R2 can be blocked, that is, the more substructures 11311 are arranged, the more the second partial reflected light R2 is blocked, and the better the effect. Exemplarily, in this embodiment, "A encloses B" can be understood as "B is entirely located in A".

[0083] Continue reading Figure 3In the Y direction, the first structure 1131 can be arranged flush with the shielding component 21 that shields the first part of the reflected light R1. The Y direction can be understood as the direction from the outer surface of the lens 113 to the inner surface. Exemplarily, when the shape of the projection of the shielding component 21 on the lens 113 is the same as that of the first structure 1131, in the X direction, the inner diameter of the first structure 1131 is the same as the inner diameter of the shielding component 21, and the outer diameter of the first structure 1131 is the same as the outer diameter of the shielding component 21; in addition, the inner diameter of the first structure 1131 can also be smaller than the inner diameter of the shielding component 21. In order to avoid shielding the light emitted by the emitting light component 111, the inner diameter of the first structure 1131 is slightly larger than the diameter of the projection m of the emitting light component 111 on the surface of the lens 113. At the same time, the outer diameter of the first structure 1131 can also be smaller than the outer diameter of the shielding component 21, which is not limited here. Exemplarily, the inner diameter of the first structure 1131 can be smaller than the outer diameter of the first structure 1131.

[0084] In addition, the first structure 1131 is Figure 3 In addition to being composed of multiple substructures 11311 as shown in FIG, other structures may also be used. For example, the first structure 1131 may be a spiral structure. Figure 5 As shown, the first structure 1131 can be gradually extended spirally from the side close to the inner surface of the lens 113 at a certain inclination angle to the outer surface of the lens 113. Exemplarily, when the shape of the first structure 1131 is a spiral, the first structure 1131 can be an equidistant spiral or a non-equidistant spiral, which can be determined according to actual conditions and is not limited here; wherein, at this time, the projection of the first structure 1131 on the inner surface or outer surface of the lens 113 can also be a ring-shaped figure.

[0085] It is understandable that the shape of the first structure 1131 can also be other shapes, and its projection on the inner surface or outer surface of the lens 113 can be sufficient to wrap the projection of the emitting light component 111 and / or the receiving light component 112 on the inner surface or outer surface of the lens 113, which is not limited here.

[0086] For example, see Figure 3 The thickness of at least one ring of the first structure 1131 in the Y direction may be less than a preset thickness to avoid the reliability of the lens 113 being affected by the excessive thickness.

[0087] It can be understood that, in this embodiment, the first structure 1131 in the lens 113 can be engraved inside the lens 113 , so it can be isolated from the outside of the lens 113 .

[0088] It can be understood that in the embodiment of the present application, the projection of the first structure 1131 on the lens 113 on the inner surface or outer surface of the lens 113 may only cover the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113, or may only cover the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113, or may cover both the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 and the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113, which is described in detail below.

[0089] In a possible implementation, when there is only one emitting light component 111, as shown in FIG. Figure 6a As shown, at this time, there can also be one receiving light component 112, and both are fixedly disposed on the substrate 114 and arranged at intervals on the substrate 114. Figure 6a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a first structure 1131 may be provided inside the lens 113. The first structure 1131 may correspond to the emitting light component 111 or the receiving light component 112.

[0090] When the first structure 1131 corresponds to the light emitting component 111, the projection of the light emitting component 111 on the inner surface or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. Figure 6b As shown, at this time, the projection of the emitting light component 111 on the inner surface of the lens 113 is m1, and the projection of the first structure 1131 on the inner surface of the lens 113 is a closed circular ring n1. At this time, m1 is entirely located in n1.

[0091] When the first structure 1131 corresponds to the light receiving component 112, the projection of the light receiving component 112 on the inner surface or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. Figure 6c As shown, at this time, the projection of the light receiving component 112 on the inner surface of the lens 113 is p1, and the projection of the first structure 1131 on the inner surface of the lens 113 is a closed circular ring n1. At this time, p1 is entirely located in n1.

[0092] In addition, in addition to the arrangement of the ring structure described above, Figure 6aIn the arrangement of the emitting light component 111 and the receiving light component 112 shown, two first structures 1131 can be set inside the lens 113. The emitting light component 111 can correspond to one first structure 1131, and the receiving light component 112 can correspond to the other first structure 1131. At this time, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 can be located in the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113; the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 can be located in the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 6d As shown, the projection of the emitting light component 111 on the inner surface of the lens 113 is m1, and the projection of the corresponding first structure 1131 on the inner surface of the lens 113 is a closed circular ring n1. At this time, m1 is entirely located in n1; the projection of the receiving light component 112 on the inner surface of the lens 113 is p1, and the projection of the corresponding first structure 1131 on the inner surface of the lens 113 is a closed circular ring n2. At this time, p1 is entirely located in n2.

[0093] In another possible implementation, when there is one transmitting optical component 111, there may be multiple receiving optical components 112, and all the receiving optical components 112 may be arranged around the transmitting optical component 111. In this case, the light emitted by one transmitting optical component 111 may be received by multiple receiving optical components 112. Figure 7a As shown, there is one transmitting light component 111, and there can be four receiving light components 112, and both the transmitting light component 111 and the receiving light component 112 are fixedly disposed on the substrate 114 and arranged at intervals on the substrate 114. Figure 7a In the embodiment, the emitting light component 111 can be disposed at a position on the substrate 114 corresponding to the central area of ​​the lens 113 , and the receiving light component 112 can be arranged entirely around the emitting light component 112 .

[0094] exist Figure 7a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in FIG. 1 , a first structure 1131 may be provided inside the lens 113, and the first structure 1131 corresponds to the emitting light component 111. In this case, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 may be located within the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 7bAs shown, the projection of the emitting light component 111 on the inner surface of the lens 113 is m1, and the projections of the four receiving light components 112 on the inner surface of the lens 113 are p1, p2, p3 and p4 respectively. The projection of the first structure 1131 corresponding to the emitting light component 111 on the inner surface of the lens 113 is a closed ring n1. At this time, all of m1 is located in n1. It can be understood that at this time, a ring structure corresponding to the receiving light component 112 can also be set inside the lens 113, for example, Figure 7a In the arrangement shown, four additional annular structures may be provided inside the lens 113, and one annular structure corresponds to one light receiving component 112; two annular structures may be provided inside the lens 113, and one annular structure corresponds to two light receiving components 112; or one annular structure may be provided inside the lens 113, and the annular structure corresponds to one light receiving component 112, and in this case, the other three light receiving components 112 do not correspond to annular structures. The specific selection may be made according to the actual situation and is not limited here.

[0095] In addition, in addition to the arrangement of the ring structure described above, Figure 7a In the arrangement of the emitting optical component 111 and the receiving optical component 112 shown in the figure, a plurality of first structures 1131 may be arranged inside the lens 113, and each receiving optical component 112 corresponds to at least one first structure 1131. In this case, the projection of the receiving optical component 112 on the inner surface or outer surface of the lens 113 may be located in the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 7c As shown, the projection of the emitting light component 111 on the inner surface of the lens 113 is m1, the projections of the four receiving light components 112 on the inner surface of the lens 113 are p1, p2, p3 and p4 respectively, and the projections of the four first structures 1131 on the inner surface of the lens 113 are closed circular rings n1, n2, n3 and n4, p1 is entirely located in n1, p2 is entirely located in n2, p3 is entirely located in n3, and p4 is entirely located in n4. It can be understood that at this time, an annular structure corresponding to the emitting light component 111 can also be provided inside the lens 113, and at this time, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 can be located in the projection of the corresponding annular structure on the inner surface or outer surface of the lens 113.

[0096] In addition, in addition to the arrangement of the ring structure described above, Figure 7aIn the arrangement of the emitting light component 111 and the receiving light component 112 shown in FIG. 1 , a plurality of first structures 1131 may be provided inside the lens 113. In this case, the projections of the plurality of receiving light components 112 on the inner surface or outer surface of the lens 113 may be located in the projection of the same first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 7d As shown, the projection of the emitting light component 111 on the inner surface of the lens 113 is m1, the projections of the four receiving light components 112 on the inner surface of the lens 113 are p1, p2, p3 and p4 respectively, and the projections of the two first structures 1131 on the inner surface of the lens 113 are closed circular rings n1 and n2, wherein p1 and p4 are all located in n1, and p2 and p3 are all located in n2. It can be understood that at this time, an annular structure corresponding to the emitting light component 111 can also be set inside the lens 113, and at this time, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 can be located in the projection of the corresponding annular structure on the inner surface or outer surface of the lens 113. In addition, in addition to two receiving light components 112 corresponding to one first structure 1131, other numbers of receiving light components 112 can also correspond to one first structure 1131, which can be determined according to actual conditions and is not limited here.

[0097] In another possible implementation, when there is one emitting optical component 111 and there are multiple receiving optical components 112, the multiple receiving optical components 112 can all be arranged around the position corresponding to the central area of ​​the lens 113 on the substrate 114, and the emitting optical component 111 is arranged outside the ring formed by the multiple receiving optical components 112. Figure 8a As shown, four receiving light components 112 can be arranged around the positions on the substrate 114 corresponding to the central area of ​​the lens 113 , and one transmitting light component 111 is arranged outside the ring formed by the multiple receiving light components 112 .

[0098] exist Figure 8a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in the figure, a first structure 1131 can be arranged inside the lens 113, and the first structure 1131 corresponds to the four receiving light components 112. At this time, the projections of the four receiving light components 112 on the inner surface or outer surface of the lens 113 are all located in the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 8bAs shown, the projection of the emitting light component 111 on the inner surface of the lens 113 is m1, the projections of the four receiving light components 112 on the inner surface of the lens 113 are p1, p2, p3 and p4 respectively, and the projection of the first structure 1131 on the inner surface of the lens 113 is a closed ring n1, at this time, p1, p2, p3 and p4 are all located in n1. It can be understood that at this time, a ring structure corresponding to the emitting light component 111 can also be set inside the lens 113, at this time, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 is located in the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113.

[0099] In another possible implementation, when there is one receiving optical component 112, there may be multiple transmitting optical components 111, and all of the transmitting optical components 111 may be arranged around the receiving optical component 112. In this case, light emitted by multiple transmitting optical components 111 may be received by one receiving optical component 112. Figure 9a As shown, there is one receiving optical component 112, and there can be four transmitting optical components 111, and both the transmitting optical components 111 and the receiving optical components 112 are fixedly disposed on the substrate 114 and arranged at intervals on the substrate 114. Figure 9a In the embodiment, the receiving light component 112 can be disposed on the substrate 114 at a position corresponding to the central area of ​​the lens 113 , and the emitting light component 111 can be arranged entirely around the receiving light component 112 .

[0100] exist Figure 9a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in FIG. 1 , a first structure 1131 may be provided inside the lens 113, and the first structure 1131 corresponds to the receiving light component 112. In this case, the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 may be located within the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 9b As shown, the projections of the four emitting light components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4 respectively, the projection of the receiving light component 112 on the inner surface of the lens 113 is p1, and the projection of the first structure 1131 corresponding to the receiving light component 112 on the inner surface of the lens 113 is a closed ring n1, at this time, p1 is entirely located in n1. It can be understood that at this time, a ring structure corresponding to the emitting light component 111 can also be set inside the lens 113, for example, Figure 9aIn the arrangement shown, four additional annular structures may be provided inside the lens 113, and one annular structure corresponds to one light emitting component 111; two annular structures may be provided inside the lens 113, and one annular structure corresponds to two light emitting components 111; or one annular structure may be provided inside the lens 113, and the annular structure corresponds to one light emitting component 111, and in this case, the other three light emitting components 111 do not correspond to annular structures. The specific selection may be made according to the actual situation and is not limited here.

[0101] In addition, in addition to the arrangement of the ring structure described above, Figure 9a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a plurality of first structures 1131 may be provided inside the lens 113, and each emitting light component 111 corresponds to at least one first structure 1131. In this case, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 may be located in the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113. For example, Fig.9c As shown, the projections of the four emitting light components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4 respectively, the projection of the receiving light component 112 on the inner surface of the lens 113 is p1, and the projections of the four first structures 1131 on the inner surface of the lens 113 are closed circular rings n1, n2, n3 and n4, wherein all of m1 is located in n1, all of m2 is located in n2, all of m3 is located in n3, and all of m4 is located in n4. It can be understood that at this time, an annular structure corresponding to the receiving light component 112 can also be set inside the lens 113, and at this time, the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 can be located in the projection of the corresponding annular structure on the inner surface or outer surface of the lens 113.

[0102] In addition, in addition to the arrangement of the ring structure described above, Figure 9a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in FIG. 1 , a plurality of first structures 1131 may be provided inside the lens 113. In this case, the projections of the plurality of emitting light components 111 on the inner surface or outer surface of the lens 113 may be located in the projection of the same first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 9dAs shown, the projections of the four emitting light components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4 respectively, the projection of the receiving light component 112 on the inner surface of the lens 113 is p1, and the projections of the two first structures 1131 on the inner surface of the lens 113 are closed circular rings n1 and n2, wherein m1 and m4 are all located in n1, and m2 and m3 are all located in n2. It can be understood that at this time, an annular structure corresponding to the receiving light component 112 can also be set inside the lens 113, and at this time, the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 can be located in the projection of the corresponding annular structure on the inner surface or outer surface of the lens 113. In addition, in addition to two emitting light components 111 corresponding to one first structure 1131, other numbers of emitting light components 111 can also correspond to one first structure 1131, which can be determined according to actual conditions and is not limited here.

[0103] In another possible implementation, when there is one receiving optical component 112 and there are multiple transmitting optical components 111, the multiple transmitting optical components 111 can all be arranged around the position corresponding to the central area of ​​the lens 113 on the substrate 114, and the receiving optical component 112 is arranged outside the ring formed by the multiple transmitting optical components 111. Fig.10a As shown, four emitting light components 111 can be arranged around the position corresponding to the central area of ​​the lens 113 on the substrate 114, and one receiving light component 112 is arranged outside the ring formed by the multiple emitting light components 111.

[0104] exist Fig.10a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in the figure, a first structure 1131 can be arranged inside the lens 113, and the first structure 1131 corresponds to the four emitting light components 111. At this time, the projections of the four emitting light components 111 on the inner surface or outer surface of the lens 113 are all located in the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Fig.10b As shown, the projections of the four emitting light components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4 respectively, the projection of the receiving light component 112 on the inner surface of the lens 113 is p1, and the projection of the first structure 1131 on the inner surface of the lens 113 is a closed ring n1. At this time, m1, m2, m3 and m4 are all located in n1. It can be understood that at this time, a ring structure corresponding to the receiving light component 112 can also be set inside the lens 113. At this time, the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 is located in the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113.

[0105] In another possible implementation, when there are multiple light emitting components 111 and multiple light receiving components 112, both the light emitting components 111 and the light receiving components 112 can be fixedly disposed on the substrate 114 and arranged at intervals on the substrate 114. Fig.11a As shown, when there are two emitting light components 111 and two receiving light components 112 , the emitting light components 111 and the receiving light components 112 can be arranged at intervals on the substrate 114 around a position on the substrate 114 corresponding to the central area of ​​the lens 113 .

[0106] Among them, Fig.11a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in the figure, a first structure 1131 may be provided inside the lens 113, and the first structure 1131 corresponds to the two emitting light components 111. In this case, the projections of the two emitting light components 111 on the inner surface or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Fig.11b As shown, the projections of the two emitting light components 111 on the inner surface of the lens 113 are m1 and m2 respectively, the projections of the two receiving light components 112 on the inner surface of the lens 113 are p1 and p2 respectively, and the projection of the first structure 1131 on the inner surface of the lens 113 is a closed circular ring n1, at this time, m1 and m2 are all located in n1.

[0107] In addition, in addition to the arrangement of the ring structure described above, Fig.11a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in the figure, two first structures 1131 may also be arranged inside the lens 113, and one first structure 1131 corresponds to one emitting light component 111. In this case, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 may be located in the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113. For example, Fig.11c As shown, the projections of the two emitting light components 111 on the inner surface of the lens 113 are m1 and m2 respectively, the projections of the two receiving light components 112 on the inner surface of the lens 113 are p1 and p2 respectively, and the projections of the two first structures 1131 on the inner surface of the lens 113 are closed circular rings n1 and n2. At this time, m1 is entirely located in n1, and m2 is entirely located in n2. It can be understood that at this time, a ring structure corresponding to the receiving light component 112 can also be set inside the lens 113, for example, Fig.11aIn the arrangement shown, an annular structure may be provided inside the lens 113, and the annular structure corresponds to two light receiving components 112; two annular structures may be provided inside the lens 113, and one annular structure corresponds to one light receiving component 112; an annular structure may be provided inside the lens 113, and the annular structure corresponds to one light receiving component 112, and in this case, the other light receiving component 112 does not correspond to the annular structure. The specific selection may be made according to the actual situation and is not limited here.

[0108] In addition, in addition to the arrangement of the ring structure described above, Fig.11a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in the figure, a first structure 1131 may also be provided inside the lens 113, and the first structure 1131 corresponds to the two receiving light components 112. In this case, the projections of the two receiving light components 112 on the inner surface or outer surface of the lens 113 are both located in the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Fig.11d As shown, the projections of the two emitting light components 111 on the inner surface of the lens 113 are m1 and m2 respectively, the projections of the two receiving light components 112 on the inner surface of the lens 113 are p1 and p2 respectively, and the projection of the first structure 1131 on the inner surface of the lens 113 is a closed circular ring n1, at this time, p1 and p2 are all located in n1.

[0109] In addition, in addition to the arrangement of the ring structure described above, Fig.11a In the arrangement of the emitting light component 111 and the receiving light component 112 shown in the figure, two first structures 1131 may also be arranged inside the lens 113, and one first structure 1131 corresponds to one receiving light component 112. In this case, the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 may be located in the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113. For example, Fig.11e As shown, the projections of the two emitting light components 111 on the inner surface of the lens 113 are m1 and m2 respectively, the projections of the two receiving light components 112 on the inner surface of the lens 113 are p1 and p2 respectively, and the projections of the two first structures 1131 on the inner surface of the lens 113 are closed circular rings n1 and n2. At this time, p1 is entirely located in n1, and p2 is entirely located in n2. It can be understood that at this time, a ring structure corresponding to the emitting light component 111 can also be set inside the lens 113, for example, Fig.11aIn the arrangement shown, an annular structure may be provided inside the lens 113, and the annular structure corresponds to two light emitting components 111; two annular structures may be provided inside the lens 113, and one annular structure corresponds to one light emitting component 111; an annular structure may be provided inside the lens 113, and the annular structure corresponds to one light emitting component 111, and in this case the other light emitting component 111 does not correspond to the annular structure. The specific selection may be made according to the actual situation and is not limited here.

[0110] It can be understood that when there are multiple emitting light components 111 and receiving light components 112, and both the emitting light components 111 and the receiving light components 112 can be fixedly set on the substrate 114 and arranged at intervals on the substrate 114, in addition to the arrangement described in the above Figure 11, the multiple emitting light components 111 can all be arranged around the position on the substrate 114 corresponding to the central area of ​​the lens 113, and the multiple receiving light components 112 can be arranged on the outside of the ring formed by the multiple emitting light components 111, or the multiple receiving light components 112 can all be arranged around the position on the substrate 114 corresponding to the central area of ​​the lens 113, and the multiple emitting light components 111 can be arranged on the outside of the ring formed by the multiple receiving light components 112.

[0111] For example, Fig.12a As shown, at this time, the emitting light components 111 can be arranged all around the position corresponding to the central area of ​​the lens 113 on the substrate 114, and the multiple receiving light components 112 can be arranged outside the ring formed by the multiple emitting light components 111. Fig.12a In the arrangement shown, the plurality of light emitting components 111 may correspond to one first structure 1131. In this case, the projections of the plurality of light emitting components 111 on the inner surface or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. Figure 12b As shown, the projections of the four emitting light components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4 respectively, the projections of the four receiving light components 112 on the inner surface of the lens 113 are p1, p2, p3 and p4 respectively, and the projection of the first structure 1131 on the inner surface of the lens 113 is a closed ring n1, at this time, m1, m2, m3 and m4 are all located in n1. It can be understood that at this time, a ring structure corresponding to the receiving light component 112 can also be set inside the lens 113, which is not limited here.

[0112] For example, Fig.13aAs shown, at this time, the receiving light components 112 can be arranged all around the position corresponding to the central area of ​​the lens 113 on the substrate 114, and the multiple transmitting light components 111 can be arranged outside the ring formed by the multiple receiving light components 112. Fig.13a In the arrangement shown, a plurality of light receiving components 112 may correspond to one first structure 1131. In this case, the projections of the plurality of light receiving components 112 on the inner surface or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. Fig.13b As shown, the projections of the four emitting light components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4 respectively, the projections of the four receiving light components 112 on the inner surface of the lens 113 are p1, p2, p3 and p4 respectively, and the projection of the first structure 1131 on the inner surface of the lens 113 is a closed ring n1, at this time, p1, p2, p3 and p4 are all located in n1. It can be understood that at this time, a ring structure corresponding to the emitting light component 111 can also be set inside the lens 113, which can be selected according to actual conditions and is not limited here.

[0113] In addition, when there are multiple light emitting components 111 and multiple light receiving components 112, and both the light emitting components 111 and the light receiving components 112 can be fixedly set on the substrate 114 and arranged at intervals on the substrate 114, in addition to the arrangement described in Figures 11, 12 and 13 above, the multiple light emitting components 111 and the multiple light receiving components 112 can also be arranged at intervals on the substrate 114 all around the position corresponding to the central area of ​​the lens 113 on the substrate 114. For example, Fig.14 As shown, when there are four emitting light components 111 and receiving light components 112, the emitting light components 111 and receiving light components 112 can be arranged on the substrate 114 at intervals around the position corresponding to the central area of ​​the lens 113 on the substrate 114. Fig.14 In the arrangement shown, each emitting optical component 111 may correspond to a first structure 1131 , and / or each receiving optical component 112 may correspond to a first structure 1131 .

[0114] It can be understood that in this embodiment, FIG. 6 to FIG. Fig.14 The number and arrangement of the emitting light component 111, the receiving light component 112 and the first structure 1131 shown are only schematic illustrations. For those skilled in the art, the number and arrangement of the emitting light component 111, the receiving light component 112 and the first structure 1131 can be adjusted according to actual needs, and no limitation is made here.

[0115] In one example, the projection of the first structure 1131 on the inner surface or outer surface of the lens 113 may be referred to as a first projection, the projection of the emitting light component 111 on the inner surface or outer surface of the lens 113 may be referred to as a second projection, and the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 may be referred to as a third projection. In addition, the inner surface or outer surface of the lens 113 may be referred to as a first surface. Exemplarily, the inner surface of the lens 113 may be a surface close to the emitting light component 111 and the receiving light component 112; the outer surface of the lens 113 may be a surface away from the emitting light component 111 and the receiving light component 112, that is, a surface facing away from the inner surface.

[0116] It should be noted that, in the embodiment of the present application, the spacing between the emitting light component 111 and the receiving light component 112 can be selected as needed, and is not limited here. For example, the spacing between the emitting light component 111 and the receiving light component 112 can be 5 mm.

[0117] It is understandable that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the smart watch. In other embodiments of the present application, the smart watch may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The illustrated components can be implemented in hardware, software, or a combination of software and hardware. In addition, the number, shape, and arrangement of the emitting light components and the receiving light components illustrated in the embodiment of the present application do not constitute a specific limitation on the emitting light components and the receiving light components. In other embodiments of the present application, the number, shape, and arrangement of the emitting light components, the receiving light components, and the annular structure may be other numbers, shapes, and arrangement methods, which are not limited here.

[0118] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0119] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A light detection component, characterized in that: The optical detection component is applied to a wearable device for detecting a user's body parameters, and the optical detection component includes at least one emitting optical component, at least one receiving optical component and a lens, wherein the lens is located at a light emitting side of the at least one emitting optical component, and the light emitted by the at least one emitting optical component passes through the lens and is received by the at least one receiving optical component after being reflected; The lens has at least one first structure inside, the projection of the at least one first structure on the first surface of the lens is a first projection, the first projection is a ring-shaped figure, the first structure is a structure with a light shielding effect, the first structure includes a plurality of substructures, and in the direction from the inner surface of the lens to the outer surface, the plurality of substructures are coaxially arranged; The projection of the at least one emitting light component on the first surface is a second projection, and the projection of the at least one receiving light component on the first surface is a third projection; The second projection is located in the first projection and / or the third projection is located in the first projection.

2. The light detection assembly according to claim 1, characterized in that: The plurality of substructures are sequentially spaced from the inner surface to the outer surface of the lens.

3. The light detection assembly according to claim 2, characterized in that: The plurality of substructures are of the same shape and size.

4. The light detection assembly according to claim 2, characterized in that: At least one of shapes and sizes of the plurality of substructures is different, and projections of the plurality of substructures on the first surface overlap at least partially.

5. The optical detection assembly according to any one of claims 2 to 4, characterized in that: In a direction from the inner surface to the outer surface of the lens, central axes of the plurality of substructures are at least partially different, and projections of the plurality of substructures on the first surface at least partially overlap.

6. The optical detection assembly according to any one of claims 2 to 4, characterized in that: In a direction from the inner surface of the lens toward the outer surface, a plurality of the substructures are arranged equidistantly.

7. The optical detection assembly according to any one of claims 2 to 4, characterized in that: The substructure is in the shape of a closed figure.

8. The light detection assembly according to claim 7, characterized in that: The closed figure is a regular figure, and the regular figure includes at least one of a circular structure, a rectangular structure, a diamond structure, and a triangular structure.

9. The light detection assembly according to claim 1, characterized in that: The first structure is arranged in a spiral shape in a direction from the inner surface of the lens toward the outer surface.

10. The light detection assembly according to claim 9, characterized in that: The spiral shape is an equidistant spiral.

11. The optical detection assembly according to any one of claims 1 to 4, characterized in that: There are one or more emitting light components, the projection of the emitting light components on the first surface includes one or more second projections, the interior of the lens has one or more first structures, the projection of one or more first structures on the first surface includes one or more first projections, and the one or more second projections are all located in the one first projection or in one of the multiple first projections.

12. The optical detection assembly according to any one of claims 1 to 4, characterized in that: There are multiple light emitting components, and the projection of the light emitting components on the first surface includes multiple second projections. The interior of the lens has multiple first structures, and the projections of the multiple first structures on the first surface include multiple first projections. wherein each of the second projections is respectively located in one of the first projections among the first projections; Alternatively, at least two of the plurality of second projections are located in one of the plurality of first projections.

13. The optical detection assembly according to any one of claims 1 to 4, characterized in that: There are one or more light-receiving components, the projection of the light-receiving components on the first surface includes one or more third projections, the interior of the lens has one or more first structures, the projection of one or more first structures on the first surface includes one or more first projections, and the one or more third projections are all located in the one first projection or in one of the first projections among the first projections.

14. The optical detection assembly according to any one of claims 1 to 4, characterized in that: There are multiple light receiving components, and the projection of the light receiving components on the first surface includes multiple third projections. The interior of the lens has multiple first structures, and the projections of the multiple first structures on the first surface include multiple first projections. Each of the third projections is located in one of the first projections among the plurality of the first projections; Alternatively, at least two of the plurality of third projections are located in one of the plurality of first projections.

15. The optical detection assembly according to any one of claims 1 to 4, characterized in that: There are a plurality of light emitting components, and the projection of the light emitting component on the first surface includes a plurality of the second projections; There are a plurality of light receiving components, and the projection of the light receiving component on the first surface includes a plurality of the third projections; The lens has a plurality of the first structures inside, and projections of the plurality of the first structures on the first surface include a plurality of the first projections; The sum of the number of the second projections and the number of the third projections is the same as the number of the first projections, and each of the first projections encloses one of the second projections or one of the third projections.

16. The optical detection assembly according to any one of claims 1 to 4, characterized in that: The first structure is engraved in the lens, and the first structure is isolated from the outside of the lens.

17. The optical detection assembly according to any one of claims 1 to 4, characterized in that: The first surface is an inner surface or an outer surface of the lens.

18. A wearable device, characterized in that: Comprising the light detection component as described in any one of claims 1-17.

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