Optical detection assembly and wearable device

Abstract

The embodiment of the invention provides a light detection assembly and wearable equipment. The light detection assembly is provided with a light emitting assembly, a light receiving assembly and a lens, light emitted by the light emitting assembly can enter the interior of the human skin through the lens and is reflected to the exterior from the interior of the human skin, and part of reflected light can be received by the light receiving assembly and can carry blood flow signals which are useful light signals; wherein light emitted by the emitting light can also be reflected in the lens and received by the receiving light assembly, and the part of reflected light does not contain blood flow signals and is a useless light signal, so that the part of reflected light needs to be eliminated as much as possible. According to the scheme, the first structure is arranged in the lens, the first structure can shield light reflected by the interior of the lens, that is, part of useless light signals are eliminated, then the intensity of the useless light received by the receiving light assembly is reduced, and therefore the detection accuracy when the light detection assembly is used for detecting body parameters such as the heart rate is improved.

Description

[0001] This application is a divisional application submitted to the State Intellectual Property Office of China on August 2, 2021 with application number 202110882137.4. Technical Field

[0002] The present application relates to the field of terminal technology, and in particular to a light detection component and a wearable device. Background Art

[0003] With the rapid improvement of the level of informatization and the increasing attention people pay to their 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

[0004] 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 for improving 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.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the present application provides a light 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 the at least one emitting light component, and the light emitted by the at least one emitting light component passes through the lens and is received by the at least one receiving light component after reflection; the interior of the lens has at least one first structure, and the projection of the 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 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; wherein the second projection is located in the first projection and / or the third projection is located in the first projection.

[0007] 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.

[0008] In one possible implementation, the first structure may include multiple substructures, which may be sequentially spaced from the inner surface of the lens toward the outer surface. This multi-layered structure can block unwanted light, thereby maximizing the amount of unwanted light blocked while ensuring lens reliability and improving detection accuracy.

[0009] In a possible implementation, the multiple substructures are all of the same shape and size. For example, the multiple sub-ring structures can all be circular in shape.

[0010] In the direction from the inner surface of the lens to the outer surface, multiple substructures can be coaxially arranged (ie Figure 3 That is, 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.

[0011] Furthermore, in the direction from the inner surface toward the outer surface of the lens, 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 at least partially overlap. The at least partial overlap of the projections of the multiple substructures on the first surface may facilitate the projections of the multiple substructures on the first surface forming a ring-shaped pattern.

[0012] In one possible implementation, the multiple substructures differ in at least one of shape and size, and the projections of the multiple substructures on the first surface at least partially overlap. The at least partial overlap of the projections of the multiple substructures on the first surface can facilitate the projections of the multiple substructures on the first surface forming a ring-shaped pattern.

[0013] The multiple substructures are coaxially arranged in the direction from the inner surface of the lens toward the outer surface. That is, the central axes of the multiple substructures are aligned in the direction from the inner surface of the lens toward the outer surface, thereby facilitating the processing of the substructures and reducing the difficulty. For example, the multiple substructures have the same shape but different sizes, and the substructures decrease in size in the direction from the inner surface of the lens toward the outer surface. In this case, the first structure formed by the multiple substructures is a conical structure.

[0014] Furthermore, in a direction from the inner surface toward the outer surface of the lens, 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 at least partial overlap of the projections of the multiple substructures on the first surface can facilitate the projections of the multiple substructures on the first surface forming a ring-shaped pattern.

[0015] In a possible implementation, the multiple substructures are arranged equidistantly in a direction from the inner surface toward the outer surface of the lens.

[0016] In a possible implementation, the substructure is in the form of a closed figure. For example, the closed figure may be a regular figure, such as a circle, rectangle, diamond, triangle, or the like.

[0017] In one possible implementation, the first structure is arranged in a spiral shape in a direction from the inner surface of the lens toward the outer surface. Thus, useless light is blocked to the greatest extent by the first structure. Exemplarily, the spiral shape is an equidistant spiral.

[0018] 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 projection of each light-emitting component on the first surface of the lens is located in the projection of a first structure on the first surface of the lens. In this way, by providing a corresponding first structure for all light-emitting components and shielding useless light from one side of the light-emitting path, the detection accuracy of the light detection component can be improved with a smaller number of first structures (with relatively simple processing technology).

[0019] In one possible implementation, there are multiple light-emitting components, and the projections of the light-emitting components on the first surface include 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 projections of one 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 portion (greater than or equal to two, and less than the total number of light-emitting components) of the multiple 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 light-emitting component, or by setting a first structure for at least two of the multiple light-emitting components according to the layout of the light-emitting components, useless light can be more effectively shielded from one side of the light-emitting path, thereby improving the detection accuracy of the light detection component.

[0020] 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 of the multiple first projections. In other words, the projection of each light-receiving component on the first surface of the lens is located in the projection of a first structure on the first surface of the lens. In this way, by providing a corresponding 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 smaller number of first structures (with relatively simple processing technology).

[0021] In one possible implementation, there are multiple light-receiving components, and the projections of the light-receiving components on the first surface include 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 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 one 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 portion (greater than or equal to two, and less than the total number of light-receiving components) of the multiple 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 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.

[0022] In one possible implementation, there are multiple emitting light components, and the projections of the emitting light components on the first surface include multiple second projections; there are multiple receiving light components, and the projections of the receiving light components on the first surface include 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 encloses a second projection or a third projection. In this way, by providing a corresponding first structure for each receiving light component and a corresponding first structure for each emitting light component, it is possible to more effectively shield useless light from both the receiving light path and the emitting light path, thereby maximizing the shielding of useless light and better improving the detection accuracy of the optical detection component.

[0023] Exemplarily, a portion of the multiple first projections can completely enclose multiple second projections. In this case, each second projection can correspond to one first projection, or multiple second projections can correspond to one first projection; at the same time, another portion of the multiple first projections can completely enclose multiple third projections. In this case, each third projection can correspond to one first projection, or multiple third projections can correspond to one first projection.

[0024] Furthermore, when a portion of the plurality of first projections completely encompasses the plurality of second projections, a portion of the plurality of third projections can be completely encompassed by another portion of the plurality of first projections. Alternatively, when a portion of the plurality of first projections completely encompasses the plurality of third projections, a portion of the plurality of second projections can be completely encompassed by another portion of the plurality of first projections.

[0025] In one possible implementation, the first structure is engraved in the lens and isolated from the outside of the lens, thereby preventing the first structure from contacting the outside and improving the rigidity of the lens.

[0026] In one 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.

[0027] 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 manner of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a smartwatch provided in an embodiment of the present application;

[0029] Figure 2This is a light path diagram of light emitted by a smart watch at a measured location provided by an embodiment of the present application;

[0030] Figure 3 is a cross-sectional schematic diagram of an upper body of a smart watch provided in an embodiment of the present application;

[0031] Figure 4 Schematic diagram of the projection 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;

[0032] Figure 5 is a schematic diagram of another annular structure in a lens provided in an embodiment of the present application;

[0033] Figure 6a This is a schematic diagram of the arrangement of a light emitting component and a light receiving component on a substrate in another smartwatch provided in an embodiment of the present application;

[0034] Figure 6b Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0035] Figure 6c Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0036] Figure 6d Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0037] Figure 7a This is a schematic diagram of the arrangement of a light emitting component and a light receiving component on a substrate in another smartwatch provided in an embodiment of the present application;

[0038] Figure 7b Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0039] Figure 7c Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0040] Figure 7d Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0041] Figure 8a This is a schematic diagram of the arrangement of a light emitting component and a light receiving component on a substrate in another smartwatch provided in an embodiment of the present application;

[0042] Figure 8bSchematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0043] Figure 9a This is a schematic diagram of the arrangement of a light emitting component and a light receiving component on a substrate in another smartwatch provided in an embodiment of the present application;

[0044] Figure 9b Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0045] Figure 9c Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0046] Figure 9d Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0047] Figure 10a This is a schematic diagram of the arrangement of a light emitting component and a light receiving component on a substrate in another smartwatch provided in an embodiment of the present application;

[0048] Figure 10b Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0049] Figure 11a This is a schematic diagram of the arrangement of a light emitting component and a light receiving component on a substrate in another smartwatch provided in an embodiment of the present application;

[0050] Figure 11b Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0051] Figure 11c Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0052] Figure 11d Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0053] Figure 11e Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0054] Figure 12a This is a schematic diagram of the arrangement of a light emitting component and a light receiving component on a substrate in another smartwatch provided in an embodiment of the present application;

[0055] Figure 12b Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0056] Figure 13a This is a schematic diagram of the arrangement of a light emitting component and a light receiving component on a substrate in another smartwatch provided in an embodiment of the present application;

[0057] Figure 13b Schematic diagram of projections of a light emitting component and a light receiving component on a lens in another smartwatch provided in an embodiment of the present application;

[0058] Figure 14 This is a schematic diagram of the arrangement of the emitting light component and the receiving light component on the substrate in another smart watch provided in an embodiment of the present application.

[0059] In the picture:

[0060] 11-watch body; 12-watch strap; 21-light shielding component;

[0061] 111-transmitting optical component; 112-receiving optical component; 113-lens; 114-substrate;

[0062] 1131-first structure; 11311-substructure. DETAILED DESCRIPTION

[0063] 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 with reference to the accompanying drawings.

[0064] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and 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 can exist; for example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0065] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing 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. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized. The term "connected" includes direct and indirect connections, unless otherwise stated.

[0066] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0067] In the embodiments of this application, words such as "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 this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0068] The embodiment of the present application provides a light detection component and a wearable device. 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. 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 the wearable device can be configured with a light detection component, 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 ease of description, the technical solution provided in the embodiment of the present application is described below using the wearable device as a smart watch as an example. It can be understood that the smart watch can also be replaced with other wearable devices, which is not limited here.

[0069] For example, Figure 1 This is a schematic diagram of the structure of a smart watch provided by an embodiment of the present application. Figure 1As shown, the smartwatch 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 by an integrally formed design, or detachably connected, such as by a snap-on connection, without limitation herein. It is understood that in some embodiments, the watch body 11 may also be referred to as the device body, and the watch strap 12 may also be referred to as a flexible fixing strap. The flexible fixing strap may be implemented as a single flexible strip or as multiple flexible strips, without limitation herein.

[0070] The watch body 11 can emit light in at least one optical band. This light can enter the human body and, after being partially absorbed by the blood and / or tissue within the body, be reflected from the skin to the outside of the body. The watch body 11 can then receive this reflected light and, based on the principle of photoelectrically detecting changes in blood volume with pulse pulsation, calculate one or more body parameters such as dynamic heart rate, resting heart rate, and blood oxygen saturation based on the changes in the reflected light intensity.

[0071] 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 understood 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.

[0072] In this embodiment, the emitting light component 111 can emit light in at least one wavelength band, and the receiving light component 112 can receive light in at least one wavelength band. Light emitted by the emitting light component 111 can pass through the lens 113 and exit the watch body 11. Light from the watch body 11 can also pass through the lens 113 and enter the watch body 11 to be received by the receiving light component 112. Exemplarily, the emitting light component 111 can be a light-emitting diode (LED), the receiving light 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 mirror, without limitation. Exemplarily, the material of the lens 113 can be, but is not limited to, glass, crystal, or the like. It will be understood that, in this embodiment, the lens 113 is merely a schematic illustration, and it may be replaced by other devices capable of allowing light from inside the watch body 11 to be emitted to the outside, and allowing light from outside the watch body 11 to enter the inside of the watch body 11, as long as it can achieve the same effect as the lens 113, and this is not limited here.

[0073] 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 illustrate the optical path of the optical detection component, only one emitting light component 111 and one receiving light component 112 are shown), the first portion of reflected light R1 is light reflected by the surface of the lens 113 close to the receiving light component 111 (i.e., the inner surface), the second portion of reflected light R2 is light reflected by the surface of the lens 113 away from the receiving light component 111 (i.e., the outer surface), and the third portion of reflected light R3 is light emitted by the emitting light component 111. A portion of the light 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 portion of reflected light R1 and the second portion of reflected light R2 are both useless light (i.e., useless signals), and the third portion of reflected light R3 is useful light (i.e., useful signals). During the detection process, the first portion of reflected light R1 and the second portion of reflected light R2 will affect the detection results. If these two portions of reflected light are strong, it will easily cause the receiving light component 112 to reach a saturated state when receiving these two portions of reflected light, thereby causing the detection to fail. In addition, even if these two portions of reflected light are weak, detection noise will be introduced, affecting the detection results and resulting in low detection accuracy.

[0074] 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 little effect 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.

[0075] To reduce the impact of the second portion of reflected light R2 on detection, in this embodiment of the present application, a first structure (e.g., a circular structure, a rectangular structure, a diamond structure, a triangular structure, etc.) is engraved within the interior of lens 113 to encompass the projection of the emitting light component 111 and / or the receiving light component 112 on lens 113. This reduces the light transmittance of lens 113, thereby blocking the second portion of reflected light R2 and achieving the purpose of light shielding. It is understood that in this embodiment of the present application, laser engraving technology can be used to engrave the first structure within lens 113. The principle of laser engraving technology is to create a three-dimensional model using a computer and then generate a three-dimensional image through computer processing. Laser technology is then used to control the laser deflection through a galvanometer mirror, so that two laser beams are injected into a transparent object (e.g., glass, crystal, etc.) from different angles and precisely intersect at a single point. Due to the interference and cancellation of the two laser beams at the intersection point, the energy of the two laser beams is converted from optical energy to internal energy, thereby releasing a large amount of heat, melting the point and forming a tiny cavity. When the two laser beams are controlled to intersect at different positions, a large number of tiny cavities can be created, which eventually form the desired pattern.

[0076] For example, Figure 3 is a partial cross-sectional schematic diagram of the upper body of the 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. The projection of the first structure 1131 on the inner or outer surface of the lens 113 is projection n, which can be an annular figure. Exemplarily, the annular figure can be a closed figure. In addition, the projection of the transmitting light component 111 on the inner or outer surface of the lens 113 is projection m; and the projection of the receiving light component 112 on the inner or outer surface of the lens 113 is projection p. Projection n can enclose projection m; and in this case, projection p is not enclosed by projection n. Exemplarily, the first structure 1131 can include one or more substructures 11311; preferably, there can be 2-4 substructures 11311. Multiple substructures 11311 can be arranged in sequence from the inner surface of the lens 113 toward the outer surface. Exemplarily, the shape of the substructures 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 composed of 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 111.

[0077] In one example, see Figure 3 When the first structure 1131 includes multiple substructures 11311, the multiple substructures 11311 can be arranged equidistantly in the Y direction. For example, a substructure 11311 can be arranged at every interval L in the Y direction. Of course, the multiple substructures 11311 can also be arranged at non-equidistant intervals, which can be determined according to actual conditions and is not limited here.

[0078] In one example, see Figure 3 When the first structure 1131 includes multiple substructures 11311, the multiple substructures 11311 may have the same shape and size. In this case, the multiple substructures 11311 may be coaxially arranged in the Y direction, that is, the central axes of the multiple substructures 11311 in the Y direction are the same axis.

[0079] Furthermore, in the Y direction, at least two of the multiple substructures 11311 may not be coaxially arranged. For example, 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 at least partially overlap. In this case, the projections of the multiple substructures 11311 on the first surface of the lens 113 may form a ring-shaped pattern.

[0080] In one example, see Figure 3When the first structure 1131 includes multiple substructures 11311, at least one of the shapes and sizes of the multiple substructures 11311 may also be different. In this case, the projections of the multiple substructures 11311 on the first surface of the lens 113 overlap at least partially. In this case, the projections of the multiple substructures 11311 on the first surface of the lens 113 may form a ring-shaped pattern. In the Y direction, the multiple substructures 11311 may be coaxially arranged, that is, the central axes of the multiple substructures 11311 in the Y direction are the same axis. In addition, in the Y direction, at least two substructures 11311 among the multiple substructures 11311 may not be coaxially arranged. Exemplarily, the central axes of the multiple substructures 11311 are at least partially different.

[0081] 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 actual circumstances. For example, a regular figure can be a figure that can be defined and / or named, while an irregular figure can be a figure that cannot be defined and / or named.

[0082] In addition, in this embodiment, the closed figure can be a completely closed figure or an approximately closed figure. For example, 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.

[0083] It can be understood that if one substructure 11311 arranged within the first structure 1131 can block a% of the second portion of reflected light R2, then after arranging n substructures 11311, n*a% of the second portion of reflected light R2 can be blocked. In other words, the more substructures 11311 arranged, the more second portion of reflected light R2 is blocked, and the better the effect. For example, in this embodiment, "A envelops B" can be understood as "B is entirely within A."

[0084] Continue reading Figure 3In the Y direction, the first structure 1131 can be arranged flush with the shielding component 21 that blocks the first portion of the reflected light R1. The Y direction can be understood as the direction from the outer surface to the inner surface of the lens 113. For example, 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 114, 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. To avoid blocking 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. For example, the inner diameter of the first structure 1131 can be smaller than the outer diameter of the first structure 1131.

[0085] In addition, the first structure 1131 is Figure 3 In addition to being composed of multiple substructures 11311 as shown in FIG, it can also be other structures. For example, the first structure 1131 can be a spiral structure. Figure 5 As shown, the first structure 1131 can spirally extend from a side close to the inner surface of the lens 113 at a certain inclination angle toward the outer surface of the lens 113. For example, when the first structure 1131 is spiral, the first structure 1131 can be an equidistant spiral or a non-equidistant spiral, depending on the actual situation and is not limited here. In this case, the projection of the first structure 1131 on the inner or outer surface of the lens 113 can also be a ring-shaped figure.

[0086] It is understandable that the shape of the structure 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 enough 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.

[0087] 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 being too thick.

[0088] It is understandable that, in this embodiment, the first structure 1131 in the lens 113 may be engraved inside the lens 113 , so that it can be isolated from the outside of the lens 113 .

[0089] 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.

[0090] 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 arranged on the substrate 114 and spaced apart 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.

[0091] 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 within 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, all of m1 is located in n1.

[0092] 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 within 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.

[0093] 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 corresponding 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; the projection of the receiving light component 112 on the inner surface of the lens 113 is p1, and the corresponding projection of the 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.

[0094] In another possible implementation, when there is one transmitting light component 111, there may be multiple receiving light components 112, and all the receiving light components 112 may be arranged around the transmitting light component 111. In this case, the light emitted by one transmitting light component 111 may be received by multiple receiving light components 112. For example, Figure 7a As shown, there is one emitting light component 111 and four receiving light components 112, and both the emitting light component 111 and the receiving light component 112 are fixedly mounted on the substrate 114 and spaced apart on the substrate 114. Figure 7a In the embodiment, the emitting light component 111 can be disposed on the substrate 114 at a position 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 .

[0095] exist Figure 7a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a first structure 1131 can 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 can 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 is understandable 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 can be set inside the lens 113, and one annular structure corresponds to one light receiving component 112; two annular structures can also be set inside the lens 113, and one annular structure corresponds to two light receiving components 112; one annular structure can also be set inside the lens 113, and the annular structure corresponds to one light receiving component 112, and the other three light receiving components 112 do not correspond to annular structures. The specific selection can be made according to actual conditions and is not limited here.

[0096] In addition, in addition to the arrangement of the ring structure described above, Figure 7a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a plurality of first structures 1131 can be provided inside the lens 113, and each receiving light component 112 corresponds to at least one first structure 1131. In this case, the projection of the receiving light component 112 on the inner surface or outer surface of the lens 113 can be located within 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, with p1 entirely located in n1, p2 entirely located in n2, p3 entirely located in n3, and p4 entirely located in n4. It is understandable that an annular structure corresponding to the emitting light component 111 can also be provided inside the lens 113. In this case, the projection of the emitting light component 111 on the inner or outer surface of the lens 113 can be located in the projection of the corresponding annular structure on the inner or outer surface of the lens 113.

[0097] 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, multiple first structures 1131 can be provided inside the lens 113. In this case, the projections of the multiple receiving light components 112 on the inner surface or outer surface of the lens 113 can be located within 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, 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 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 is understandable that at this time, an annular structure corresponding to the emitting light component 111 can also be set inside the lens 113. In this case, 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. The specific number can be determined according to actual conditions and is not limited here.

[0098] In another possible implementation, when there is one emitting light component 111 and there are multiple receiving light components 112, the multiple receiving light components 112 can be arranged around the position corresponding to the central area of the lens 113 on the substrate 114, and the emitting light component 111 is arranged outside the ring formed by the multiple receiving light components 112. Figure 8a As shown, the four receiving light components 112 can be arranged around the position corresponding to the central area of the lens 113 on the substrate 114, and one transmitting light component 111 is arranged outside the ring formed by the multiple receiving light components 112.

[0099] exist Figure 8a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a first structure 1131 can be provided inside the lens 113, and the first structure 1131 corresponds to the four receiving light components 112. In this case, the projections of the four receiving light components 112 on the inner surface or outer surface of the lens 113 are all located within 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. In this case, p1, p2, p3 and p4 are all located in n1. It is understandable that an annular structure corresponding to the emitting light component 111 can also be set inside the lens 113. In this case, 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.

[0100] In another possible implementation, when there is one receiving optical component 112, there may be multiple transmitting optical components 111, and all the transmitting optical components 111 may be arranged around the receiving optical component 112. In this case, the light emitted by the multiple transmitting optical components 111 may be received by one receiving optical component 112. For example, Figure 9a As shown, there is one receiving light component 112 and four transmitting light components 111, and both the transmitting light component 111 and the receiving light component 112 are fixedly mounted on the substrate 114 and spaced apart on the substrate 114. Figure 9a In the embodiment, the receiving light component 112 can be arranged at a position on the substrate 114 corresponding to the central area of the lens 113 , and the transmitting light component 111 can be arranged entirely around the receiving light component 112 .

[0101] exist Figure 9a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a first structure 1131 can 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 can 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 is understandable 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 9aUnder the arrangement shown, four additional annular structures can be set inside the lens 113, and one annular structure corresponds to one light emitting component 111; two annular structures can also be set inside the lens 113, and one annular structure corresponds to two light emitting components 111; one annular structure can also be set inside the lens 113, and the annular structure corresponds to one light emitting component 111. In this case, the other three light emitting components 111 do not correspond to annular structures. The specific selection can be made according to actual conditions and is not limited here.

[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, a plurality of first structures 1131 can 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 can be located within the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 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 is understood that an annular structure corresponding to the receiving light component 112 can also be provided inside the lens 113. In this case, the projection of the receiving light component 112 on the inner or outer surface of the lens 113 can be located in the projection of the corresponding annular structure on the inner or outer surface of the lens 113.

[0103] 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, multiple first structures 1131 can be provided inside the lens 113. In this case, the projections of the multiple emitting light components 111 on the inner surface or outer surface of the lens 113 can be located within 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 is understandable that at this time, an annular structure corresponding to the receiving light component 112 can also be set inside the lens 113. In this case, 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. The specific number can be determined according to actual conditions and is not limited here.

[0104] In another possible implementation, when there is one receiving light component 112 and there are multiple transmitting light components 111, the multiple transmitting light components 111 can be arranged around the position corresponding to the central area of the lens 113 on the substrate 114, and the receiving light component 112 is arranged outside the ring formed by the multiple transmitting light components 111. Figure 10a As shown, the four transmitting light components 111 can be arranged around the position corresponding to the central area of the lens 113 on the substrate 114, and the one receiving light component 112 is arranged outside the ring formed by the multiple transmitting light components 111.

[0105] exist Figure 10a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a first structure 1131 can be provided inside the lens 113, and the first structure 1131 corresponds to the four emitting light components 111. In this case, the projections of the four emitting light components 111 on the inner surface or outer surface of the lens 113 are all located within the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 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. The projection of the first structure 1131 on the inner surface of the lens 113 is a closed circular ring n1. In this case, m1, m2, m3, and m4 are all located in n1. It is understandable that an annular structure corresponding to the receiving light component 112 can also be provided inside the lens 113. In this case, 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.

[0106] 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 mounted on the substrate 114 and spaced apart on the substrate 114. Figure 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 corresponding to the central area of the lens 113 on the substrate 114 .

[0107] Among them, Figure 11a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a first structure 1131 can 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 can be located within the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 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 ring n1. At this time, m1 and m2 are all located in n1.

[0108] In addition, in addition to the arrangement of the ring structure described above, Figure 11a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, two first structures 1131 may also be provided 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 within the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 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, Figure 11aUnder the arrangement shown, you can choose to set up another annular structure inside the lens 113, and the annular structure corresponds to two light receiving components 112; you can also choose to set up two annular structures inside the lens 113, and one annular structure corresponds to one light receiving component 112; you can also choose to set up another annular structure inside the lens 113, and the annular structure corresponds to one light receiving component 112, in which case the other light receiving component 112 does not correspond to the annular structure. The specific selection can be made according to actual conditions and is not limited here.

[0109] In addition, in addition to the arrangement of the ring structure described above, Figure 11a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, a first structure 1131 can 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 within the projection of the first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 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 ring n1. At this time, p1 and p2 are all located in n1.

[0110] In addition, in addition to the arrangement of the ring structure described above, Figure 11a In the arrangement of the emitting light component 111 and the receiving light component 112 shown, two first structures 1131 may also be provided 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 within the projection of the corresponding first structure 1131 on the inner surface or outer surface of the lens 113. For example, Figure 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, Figure 11aUnder the arrangement shown, you can choose to set up another annular structure inside the lens 113, and the annular structure corresponds to two emitting light components 111; you can also choose to set up two additional annular structures inside the lens 113, and one annular structure corresponds to one emitting light component 111; you can also choose to set up another annular structure inside the lens 113, and the annular structure corresponds to one emitting light component 111, in which case the other emitting light component 111 does not correspond to the annular structure. The specific selection can be made according to actual conditions and is not limited here.

[0111] 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 Figure 11 above, 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.

[0112] For example, Figure 12a As shown, the transmitting light components 111 can be arranged 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 transmitting light components 111. Figure 12a In the arrangement shown, multiple light emitting components 111 may correspond to one first structure 1131. In this case, the projections of the multiple light emitting components 111 on the inner or outer surface of the lens 113 may be located within the projection of the first structure 1131 on the inner 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. The projection of the first structure 1131 on the inner surface of the lens 113 is a closed circular ring n1. In this case, m1, m2, m3, and m4 are all located in n1. It is understood that an annular structure corresponding to the receiving light component 112 can also be set inside the lens 113, which is not limited here.

[0113] For example, Figure 13aAs shown, the receiving light components 112 can all be arranged 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. Figure 13a In the arrangement shown, multiple light receiving components 112 may correspond to one first structure 1131. In this case, the projections of the multiple light receiving components 112 on the inner or outer surface of the lens 113 may be located within the projection of the first structure 1131 on the inner or outer surface of the lens 113. Figure 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. The projection of the first structure 1131 on the inner surface of the lens 113 is a closed ring n1. In this case, p1, p2, p3, and p4 are all located in n1. It is understandable that an annular structure corresponding to the emitting light component 111 can also be set inside the lens 113. The specific selection can be made according to actual conditions and is not limited here.

[0114] 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 around the position corresponding to the central area of the lens 113 on the substrate 114. For example, Figure 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. Figure 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 .

[0115] It can be understood that, in this embodiment, FIG. 6 to FIG. Figure 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.

[0116] In one example, the projection of the first structure 1131 on the inner or outer surface of the lens 113 can be referred to as a first projection, the projection of the light emitting component 111 on the inner or outer surface of the lens 113 can be referred to as a second projection, and the projection of the light receiving component 112 on the inner or outer surface of the lens 113 can be referred to as a third projection. Furthermore, the inner or outer surface of the lens 113 can be referred to as a first surface. For example, the inner surface of the lens 113 can be the surface on the side close to the light emitting component 111 and the light receiving component 112; the outer surface of the lens 113 can be the surface on the side away from the light emitting component 111 and the light receiving component 112, i.e., the surface facing away from the inner surface.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A light detection component, characterized in that: The device comprises at least one emitting light component, at least one receiving light component and a light shielding glass, wherein the light shielding glass is located on the light-emitting side of the at least one emitting light component, and the light emitted by the at least one emitting light component passes through the light shielding glass and is received by the at least one receiving light component after being reflected; The shading glass is used to reduce the useless light received by the at least one light receiving component, thereby improving signal quality.

2. The light detection assembly according to claim 1, wherein: The shading glass includes at least one shading structure, the projection of the at least one shading structure on the first surface of the shading glass is a first projection, and the first projection is a ring-shaped figure; 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.

3. The light detection assembly according to claim 2, wherein: The shading structure includes a plurality of substructures, and the plurality of substructures are sequentially spaced from the inner surface to the outer surface of the shading glass.

4. The light detection assembly according to claim 3, wherein: The multiple substructures are of the same shape and size.

5. The light detection assembly according to claim 3, wherein: 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 at least partially overlap.

6. The light detection assembly according to any one of claims 3 to 5, characterized in that: A plurality of the substructures are coaxially arranged in a direction from the inner surface to the outer surface of the shading glass.

7. The light detection assembly according to any one of claims 3 to 5, characterized in that: In a direction from the inner surface to the outer surface of the shading glass, 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.

8. The light detection assembly according to any one of claims 3 to 7, characterized in that: In a direction from the inner surface to the outer surface of the shading glass, a plurality of the substructures are arranged equidistantly.

9. The light detection assembly according to any one of claims 3 to 8, characterized in that: The substructure is in the form of a closed figure.

10. The light detection assembly according to claim 9, wherein: The closed figure is a regular figure.

11. The light detection assembly according to claim 2, wherein: The shading structure is arranged in a spiral shape in a direction from the inner surface of the shading glass toward the outer surface.

12. The light detection assembly according to claim 11, wherein: The spiral shape is an equidistant spiral.

13. The light detection assembly according to any one of claims 2 to 12, characterized in that: There are one or more light-emitting components, and the projection of the light-emitting components on the first surface includes one or more second projections. The interior of the shading glass has one or more shading structures, and the projection of one or more shading structures on the first surface includes one or more first projections. The one or more second projections are all located in the one first projection or in one of the multiple first projections.

14. The light detection assembly according to any one of claims 2 to 12, characterized in that: There are multiple light-emitting components, and projections of the light-emitting components on the first surface include multiple second projections. The light-shielding glass has multiple light-shielding structures inside, and projections of the multiple light-shielding structures on the first surface include multiple first projections. wherein each of the second projections is located in one of the first projections; Alternatively, at least two of the plurality of second projections are located in one of the plurality of first projections.

15. The light detection assembly according to any one of claims 2 to 12, characterized in that: There are one or more light-receiving components, and the projections of the light-receiving components on the first surface include one or more third projections. The interior of the shading glass has one or more shading structures, and the projections of one or more shading structures on the first surface include one or more first projections. The one or more third projections are all located in the one first projection or in one of the multiple first projections.

16. The light detection assembly according to any one of claims 2 to 12, characterized in that: There are multiple light receiving components, and projections of the light receiving components on the first surface include multiple third projections. The light shielding glass has multiple light shielding structures inside, and projections of the multiple light shielding structures on the first surface include multiple first projections. Each of the third projections is located in one of the first projections; Alternatively, at least two of the plurality of third projections are located in one of the plurality of first projections.

17. The light detection assembly according to any one of claims 2 to 12, 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 second projections; There are multiple light receiving components, and the projections of the light receiving components on the first surface include multiple third projections; The shading glass has a plurality of shading structures inside, and projections of the plurality of shading structures on the first surface include a plurality of first projections; The sum of the number of the second projections and 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.

18. The light detection assembly according to any one of claims 2 to 17, characterized in that: The shading structure is carved in the shading glass, and the shading structure is isolated from the outside of the shading glass.

19. The light detection assembly according to any one of claims 2 to 18, characterized in that: The first surface is the inner surface or the outer surface of the shading glass.

20. A wearable device, characterized in that: The method comprises the light detection component as claimed in any one of claims 1 to 19.

21. The wearable device according to claim 20, wherein: The wearable devices include smart watches and smart bracelets.

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