CN115701342A - Light detection assembly and wearable equipment - Google Patents

Abstract

The embodiment of the application provides a light detection assembly and wearable equipment. The light detection component is provided with a light emitting component, a light receiving component and a lens, light emitted by the light emitting component can enter the inside of human skin through the lens and is reflected to the outside from the inside of the human skin, part of reflected light can be received by the light receiving component, and the part of reflected light can carry blood flow signals and is useful light signals; in this case, the light emitted from the emitted light may also be reflected inside the lens and received by the light receiving element, and this part of the reflected light does not include a blood flow signal, which is a waste light signal, and it is necessary to eliminate this part of the reflected light as much as possible. This scheme has carved with first structure in lens are inside, and this first structure can shelter from the light of lens internal reflection, eliminates partial useless light signal promptly, and then has reduced the intensity of receiving the useless light of optical assembly receipt, has promoted the degree of accuracy that detects when utilizing this optical detection subassembly to detect health parameters such as rhythm of the heart from this.

Description

Light detection assembly and wearable equipment

Technical Field

The application relates to the technical field of terminals, in particular to a light detection assembly and wearable equipment.

Background

With the rapid increase of informatization level and the increase of attention of people to physical health, the demand and application of wearable devices capable of monitoring physical conditions (especially monitoring heart rate) in real time are gradually increasing. Currently, in order to monitor heart rate, a heart rate monitoring device may be configured in the wearable device. Typically, the heart rate monitoring device may be an optical heart rate sensor. Among them, the heart rate can be monitored by photoplethysmography (PPG). However, in the monitoring process, the optical heart rate sensor often generates a useless light signal (i.e. a noise signal), so as to affect the corresponding useful light signal, so that the signal-to-noise ratio of the signal of the optical heart rate sensor is poor, and the detection result is affected.

Disclosure of Invention

The embodiment of the application provides a light detection component and wearable equipment, and the main objective provides one kind can improve the signal to noise ratio of the signal that light detection component received, and then improves the accuracy of light detection component and the wearable equipment that possesses this light detection component and detect body parameters such as rhythm of the heart.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

in a first aspect, the present application provides a light detection assembly, which may include: the lens is positioned on the light outlet side of the at least one light emitting component, and light emitted by the at least one light emitting component passes through the lens and is received by the at least one light receiving component after being reflected; the lens is internally provided with at least one first structure, the projection of the at least one first structure on the first surface of the lens is a first projection, and the first projection can be an annular figure; the projection of the at least one light-emitting component on the first surface is a second projection, and the projection of the at least one light-receiving 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.

From this, through set up the first structure of projection for cyclic annular figure in lens to shelter from the light that is sent by the inside reflection of lens transmission optical assembly, thereby reduced the intensity of receiving the received useless light of optical assembly, and then improve the signal-to-noise ratio of receiving the signal that optical assembly received, detection precision when having promoted to utilize this optical detection assembly to detect body parameters such as rhythm of the heart.

In one possible implementation, the first structure may include a plurality of sub-structures, which may be sequentially spaced apart in a direction of the inner surface toward the outer surface of the lens. Therefore, the useless light can be shielded through the multilayer structure, so that the useless light is shielded to the greatest extent on the premise of ensuring the reliability of the lens, and the detection precision is improved.

In one possible implementation, the shapes and sizes of the plurality of sub-structures are the same. Illustratively, the plurality of sub-ring structures may each be circular in shape.

Wherein the plurality of substructures may be arranged coaxially (i.e. in the arrangement shown in fig. 3) in a direction from the inner surface towards the outer surface of the lens. That is, in the direction in which the inner surface of the lens faces the outer surface, the central axes of the plurality of substructures are the same axis, so that the substructures can be conveniently machined, and the machining difficulty is reduced.

Furthermore, the central axes of the plurality of substructures may at least partially differ in a direction of the inner surface of the lens towards the outer surface, and projections of the plurality of substructures on the first surface at least partially overlap. Wherein the at least partial overlapping of the projections of the plurality of substructures on the first surface may facilitate the projection of the plurality of substructures on the first surface to form a ring-shaped pattern.

In one possible implementation, at least one of the shape and the size of the plurality of substructures is different, and projections of the plurality of substructures on the first surface overlap at least partially. Wherein the at least partial overlapping of the projections of the plurality of substructures on the first surface may facilitate the projection of the plurality of substructures on the first surface to form a ring-shaped pattern.

Wherein the plurality of substructures are coaxially arranged in a direction in which the inner surface of the lens faces the outer surface. That is, in the direction in which the inner surface of the lens faces the outer surface, the central axes of the plurality of substructures are the same axis, so that the substructures can be conveniently machined, and the machining difficulty is reduced. Illustratively, the shapes of the plurality of substructures are the same, but the sizes of the plurality of substructures are different, and the substructures are gradually decreased from the large to the small in the direction from the inner surface to the outer surface of the lens, and in this case, the first structure formed by the plurality of substructures is a conical structure.

Furthermore, the central axes of the plurality of substructures are at least partially different in a direction of the inner surface of the lens towards the outer surface, and projections of the plurality of substructures on the first surface overlap at least partially. Wherein the at least partial overlapping of the projections of the plurality of substructures on the first surface may facilitate the projection of the plurality of substructures on the first surface to form a ring-shaped pattern.

In a possible implementation, the plurality of substructures are arranged equidistantly in a direction from the inner surface towards the outer surface of the lens.

In one possible implementation, the shape of the substructure is a closed figure. Illustratively, the closed graph may be a regular graph. The closed graph can be a regular graph such as a circle, a rectangle, a diamond, a triangle and the like.

In a possible implementation, the first structure is arranged as a spiral in the direction of the inner surface towards the outer surface of the lens. Thereby, the waste light is blocked to the maximum extent by one first structure. Illustratively, the spiral is an equidistant spiral.

In one possible implementation, the one or more light-emitting components are one or more, the projection of the light-emitting components onto the first surface comprises 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 onto the first surface comprises one or more first projections, and the one or more second projections are all located in the one or more first projections. That is, the projection of each of the light-emitting assemblies onto the first surface of the lens is in the projection of one of the first structures onto the first surface of the lens. Therefore, the first structures are correspondingly arranged for all the light emitting components, the waste light is shielded from one side of the light emitting path, and the detection precision of the light detection components can be improved by the first structures with less quantity (the processing technology is relatively simple).

In one possible implementation, the light emitting assembly is plural, the projection of the light emitting assembly on the first surface includes plural second projections, the lens has plural first structures inside, and the projection of the plural first structures on the first surface includes plural first projections; wherein each second projection is respectively located in one of the plurality of first projections; alternatively, at least two of the plurality of second projections are located in one of the plurality of first projections. That is, the projection of each light-emitting component on the first surface of the lens may be located in the projection 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; alternatively, a projection of a portion (greater than or equal to two, and less than the total number of light-emitting assemblies) of the plurality of light-emitting assemblies onto the first surface of the lens may all be in a projection of one first structure onto the first surface of the lens; furthermore, the projection of the remaining light-emitting components on the first surface of the lens may be in the projection of the other first structure on the first surface of the lens. Therefore, the first structure is correspondingly arranged for each light emitting component, or the first structure is correspondingly arranged for at least two of the light emitting components according to the layout mode of the light emitting components, so that the waste light can be effectively shielded from one side of the light emitting path, and the detection precision of the light detection component is improved.

In a possible implementation manner, the number of the light receiving components is one or more, the projection of the light receiving components on the first surface includes one or more third projections, the inside 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 or more first projections. That is, the projection of each receiving optical component onto the first surface of the lens is located in the projection of one first structure onto the first surface of the lens. Therefore, the first structures are correspondingly arranged for all the light receiving components, the useless light is shielded from one side of the light receiving path, and the detection precision of the light detection components can be improved by the first structures with less quantity (the processing technology is relatively simple).

In a possible implementation manner, the number of the light receiving assemblies is multiple, the projection of the light receiving assemblies on the first surface includes multiple third projections, the inside 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 plurality of first projections; alternatively, at least two of the plurality of third projections are located in one of the plurality of first projections. That is, the projections of the respective light-receiving components on the first surface of the lens may 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; alternatively, a projection of a portion (greater than or equal to two, and less than the total number of light-receiving components) of the plurality of light-receiving components onto the first surface of the lens may all lie in a projection of one first structure onto the first surface of the lens; furthermore, the projection of the remaining light receiving elements on the first surface of the lens may also be located in the projection of the other first structures on the first surface of the lens. Therefore, the first structures are correspondingly arranged for each receiving light assembly, or the first structures are correspondingly arranged for at least two of the receiving light assemblies according to the layout mode of the receiving light assemblies, so that useless light can be effectively shielded from one side of the receiving light path, and the detection accuracy of the light detection assembly is improved.

In one possible implementation, the light emitting assembly is plural, and the projection of the light emitting assembly on the first surface includes plural second projections; the light receiving assemblies are multiple, and the projection of the light receiving assemblies on the first surface comprises multiple third projections; the inner part of the lens is provided with a plurality of first structures, and the projection of the plurality of first structures on the first surface comprises a plurality of first projections; wherein each first projection is wrapped by one second projection or wrapped by one third projection. Like this, through for every receive optical assembly correspondence set up a first structure to and for every transmit optical assembly correspondence set up a first structure, can shield useless light from receiving light path one side and transmitting light path one side more effectively, thereby furthest shelters from useless light, with better realization promotion optical detection subassembly's detection precision.

For example, a part of the first projections in the plurality of first projections may completely wrap the plurality of second projections, and at this time, each of the second projections may correspond to one of the first projections, or the plurality of second projections may correspond to one of the first projections; meanwhile, another part of the first projections in the plurality of first projections may completely wrap the plurality of third projections, and at this time, each third projection may correspond to one first projection, or the plurality of third projections may correspond to one first projection.

In addition, when a part of the first projections in the plurality of first projections may completely wrap the plurality of second projections, a part of the third projections in the plurality of third projections may be completely wrapped by another part of the first projections in the plurality of first projections. Alternatively, when a part of the first projections in the plurality of first projections may fully wrap the plurality of third projections, a part of the second projections in the plurality of second projections may be fully wrapped by another part of the first projections in the plurality of first projections.

In one possible implementation, the first structure is engraved in the lens, the first structure being isolated from the outside of the lens. Thus, the first structure is prevented from contacting the outside, and the rigidity of the lens is improved.

In one possible implementation, the first surface may be an inner or outer surface of the lens. For example, the inner surface may be a surface of the lens on a side thereof adjacent to the light emitting and receiving elements, and the outer surface may be a surface of the lens on a side thereof remote from the light emitting and receiving elements.

In a second aspect, the present application provides a wearable device, which may include the light detection component provided in any one of the implementations of the first aspect and the first aspect.

Drawings

Fig. 1 is a schematic structural diagram of a smart watch provided in an embodiment of the present application;

fig. 2 is an optical path diagram of light emitted by a smart watch at a measured portion according to an embodiment of the present application;

fig. 3 is a schematic cross-sectional view of an upper body of a smart watch provided in an embodiment of the present application;

fig. 4 is a schematic diagram of a projection of a light emitting element and a light receiving element on a lens in a watch body of a smart watch provided in an embodiment of the present application;

FIG. 5 is a schematic diagram of an annular structure in another lens provided in an embodiment of the present application;

fig. 6a is a schematic layout diagram of an emitting optical assembly and a receiving optical assembly on a substrate in another smart watch provided in an embodiment of the present application;

fig. 6b is a schematic diagram of a projection 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;

fig. 6c is a schematic diagram of a projection 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;

fig. 6d is a schematic diagram of a projection 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;

fig. 7a is a schematic layout diagram of an emitting optical element and a receiving optical element on a substrate in yet another smart watch provided in an embodiment of the present application;

fig. 7b is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 7c is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 7d is a schematic view of a projection of a light emitting element and a light receiving element on a lens in yet another smart watch provided in an embodiment of the present application;

fig. 8a is a schematic layout diagram of an emitting optical component and a receiving optical component on a substrate in yet another smart watch provided in an embodiment of the present application;

fig. 8b is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 9a is a schematic layout diagram of an emitting optical element and a receiving optical element on a substrate in another smart watch provided in an embodiment of the present application;

fig. 9b is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 9c is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 9d is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 10a is a schematic layout diagram of an emitting optical element and a receiving optical element on a substrate in another smart watch provided in an embodiment of the present application;

fig. 10b is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 11a is a schematic layout diagram of an emitting optical element and a receiving optical element on a substrate in another smart watch provided in an embodiment of the present application;

fig. 11b is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 11c is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 11d is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 11e is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 12a is a schematic layout diagram of an emitting optical element and a receiving optical element on a substrate in another smart watch provided in an embodiment of the present application;

fig. 12b is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 13a is a schematic layout diagram of an emitting optical element and a receiving optical element on a substrate in another smart watch provided in an embodiment of the present application;

fig. 13b is a schematic diagram of a projection of a light emitting component and a light receiving component on a lens in yet another smart watch provided by an embodiment of the present application;

fig. 14 is a schematic layout diagram of an emitting optical component and a receiving optical component on a substrate in another smart watch provided in an embodiment of the present application.

In the figure:

11-a watch body; 12-a watchband; 21-a shading component;

111-an emitting light component; 112-a light receiving component; 113-a lens; 114-a substrate;

1131 — a first structure; 11311-substructure.

Detailed Description

In order to make the objects, 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.

The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" means one or more than two (including two). The term "and/or" is used to describe an association relationship that associates objects, meaning that three relationships may exist; for example, a and/or B, may represent: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise. The term "coupled" includes both direct and indirect connections, unless otherwise noted.

In the following, the terms "first", "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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The embodiment of the application provides a light detection assembly and wearable equipment. The optical detection component can be used for detecting body parameters of a user, such as dynamic heart rate, static heart rate, blood oxygen saturation and the like. The light detection assembly may be configured in a wearable device. The wearable device may be worn on the body of the user or integrated into the clothing or accessories of the user, which is not limited herein. When the wearable device can be provided with a light detection component, the body parameters of the user, such as dynamic heart rate, static heart rate, blood oxygen saturation and the like, can be detected through the light detection component. By way of example, the wearable device includes, but is not limited to, a smart watch, a smart bracelet, smart glasses, and the like. For convenience of description, the wearable device is taken as an example of a smart watch, and the technical solutions provided in the embodiments of the present application are described below. It is understood that the smart watch may be replaced with other wearable devices, which is not limited herein.

Exemplarily, fig. 1 is a schematic structural diagram of a smart watch provided in an embodiment of the present application. As shown in fig. 1, the smart watch may include a watch body 11 and a band 12 connected to the watch body 11. The watchband 12 and the watch body 11 can be connected together in a non-detachable manner, for example: the integrated design can also be detachably connected, for example: snap fit, etc., without limitation herein. It will be appreciated that in some embodiments, the watch body 11 may also be referred to as the device body and the wristband 12 may also be referred to as the flexible strap. The flexible fixing belt can be realized by one section of flexible strip or multiple sections of flexible strips, and the flexible fixing belt is not limited in the position.

The watch body 11 can emit light of at least one optical band, and the light can enter the human body and be reflected to the outside of the human skin from the inside of the human skin after being partially absorbed by blood and/or tissues in the human body. Then, the meter body 11 can receive the part of the reflected light, and calculate one or more body parameters of dynamic heart rate, static heart rate, blood oxygen saturation and the like according to the intensity change of the reflected light based on the principle that the volume of blood is detected by photoelectricity to change along with pulse.

Illustratively, and with continued reference to FIG. 1, a light sensing assembly and substrate (not shown) may be included in the watch body 11. Wherein the light detecting components may comprise at least one light emitting component 111, at least one light receiving component 112, a lens 113. The light emitting element 111 and the light receiving element 112 are both fixedly mounted on the substrate, and the light emitting element 111 and the light receiving element 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 may be fixedly mounted on the substrate, or may be fixedly mounted on the watch body 11, which is not limited herein. Among them, the lens 113 is mainly used for making the light emitted from the light emitting element 111 exit from the inside of the watch body 11 to the outside of the watch body 11, and making the light receiving element 112 receive the light outside the watch body 11. In fig. 1, the number of the light emitting elements 111 is 1, and the number of the light receiving elements 112 is 4. It is understood that the number of the light emitting components 111 and the light receiving components 112 and the layout manner thereof on the watch body 11 can be selected according to practical situations, and is not limited herein.

In this embodiment, the light emitting component 111 can emit light in at least one wavelength band, and the light receiving component 112 can receive light in at least one wavelength band. Wherein, the light emitted from the emitting light assembly 111 can exit to the outside of the watch body 11 through the lens 113, and the light outside the watch body 11 can enter to the inside of the watch body 11 through the lens 113 and be received by the receiving light assembly 112. For example, the light-emitting element 111 may be a light-emitting diode (LED), the light-receiving element 112 may be a Photodiode (PD), and the substrate 114 may be a Printed Circuit Board (PCB). For example, the lens 113 may be a convex lens, a fresnel lens, or another transparent mirror, which is not limited herein. Illustratively, the material of the lens 113 may be, but is not limited to, glass, crystal, etc. It should be understood that, in the present embodiment, the lens 113 is only schematically illustrated, and it may be replaced by another device capable of emitting light inside the watch body 11 to the outside and entering light outside the watch body 11 to the inside of the watch body 11, which can achieve the same effect as the lens 113, and is not limited herein.

Generally, after the light emitting component 111 emits light, there are three portions of reflected light. As shown in fig. 2 (to better show the optical path of the light detecting element, only one light emitting element 111 and one light receiving element 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 on the side close to the light receiving element 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 on the side away from the light receiving element 111, and the third part of the reflected light R3 is the reflected light which is emitted by the light emitting element 111 and absorbed in a part inside the human skin tissue S and reflected to the outside by the inside of the human skin tissue S. 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). In the detection process, both the first part of the reflected light R1 and the second part of the reflected light R2 affect the detection result, and if the two parts of the reflected light are strong, the receiving optical assembly 112 may easily reach a saturation state when receiving the two parts of the reflected light, thereby causing detection failure. In addition, even if the two reflected lights are weak, detection noise is introduced, which affects the detection result, resulting in low detection accuracy.

With continued reference to fig. 2, for the first part of the reflected light R1, a light shielding element 21 (e.g., black foam, etc.) may be added between the light emitting element 111 and the light receiving element 112 to shield the part of the reflected light. Illustratively, the shutter assembly may be bonded to the substrate 114. The second part of the reflected light R2 can be blocked by pasting a grating on the inner surface of the lens 113, but this method can only block a part of the reflected light at a certain angle, and cannot block most of the reflected light, and at the same time, the grating also blocks a 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 a small influence on the detection, and the second part of the reflected light R2 is difficult to be effectively blocked, so the second part of the reflected light R2 has a large influence on the detection.

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 (for example, a circular structure, a rectangular structure, a diamond structure, a triangular structure, or the like) that can wrap the projection of the light emitting component 111 and/or the light receiving component 112 on the lens 113 is engraved in the inside of the lens 113 to reduce the light transmittance of the lens 113, so as to block the second part of the reflected light R2, thereby achieving the purpose of blocking light. It is understood that the laser engraving technique may be employed to engrave the first structure on the inside of the lens 113 in the embodiments of the present application. Wherein, the principle of the laser inner carving technology is as follows: making a three-dimensional model through a computer, and generating a three-dimensional image after computer operation processing; and then, by utilizing the laser technology, controlling laser deflection through a galvanometer, enabling two beams of laser to be incident into a transparent object (such as glass, crystal and the like) from different angles, and enabling the two beams of laser to accurately intersect at one point. Because the two laser beams interfere and offset at the junction, the energy of the two laser beams can be converted into internal energy by light energy, so that a large amount of heat is emitted, and the junction is melted to form a tiny cavity. When two laser beams are controlled to meet at different positions, a large number of tiny holes can be manufactured, and finally the holes form a required pattern.

Fig. 3 is a schematic partial cross-sectional view of a watch body of a smart watch provided in an embodiment of the present application, and fig. 4 is a schematic view of a projection of a light emitting element and a light receiving element on a lens in the watch body of the smart watch provided in the embodiment of the present application. As shown in fig. 3 and 4, the lens 113 has a first structure 1131 engraved therein, and a projection of the first structure 1131 on the inner surface or the outer surface of the lens 113 is a projection n, which may be a ring-shaped pattern. Illustratively, the ring-shaped pattern may be a closed pattern. Further, the projection of the emitting light assembly 111 on the inner or outer surface of the lens 113 is a projection m; the projection of the receiving light assembly 112 on the inner or outer surface of the lens 113 is a projection p. Wherein projection n may wrap projection m; and at this point, projection p is not wrapped by projection n. Illustratively, the first structure 1131 may include one or more substructures 11311; preferably, there may be 2-4 substructures 11311. Wherein the plurality of substructures 11311 may be sequentially arranged at intervals in a direction from the inner surface to the outer surface of the lens 113. Illustratively, the shape of the substructure 11311 may be a closed figure. Illustratively, when the first structure 1131 includes a plurality of substructures 11311, the inner diameters of the different substructures 11311 may be the same or different; likewise, the outer diameters of the different sub-structures 11311 may be the same or different, as long as the projection n of the first structure 1131 formed by the plurality of sub-structures 11311 on the surface of the lens 113 can wrap the projection m of the light emitting assembly 111 on the surface of the lens 113, and does not block the light emitted by the light emitting assembly 111 through the lens 111.

In one example, with continued reference to fig. 3, when the first structure 1131 includes a plurality of sub-structures 11311, the plurality of sub-structures 11311 may be arranged equidistantly in the Y-direction, e.g., one sub-structure 11311 may be arranged every separation distance L in the Y-direction. Of course, the plurality of substructures 11311 may also be arranged in a non-equidistant manner, which may be determined according to the actual situation and is not limited herein.

In an example, with continued reference to fig. 3, when the first structure 1131 includes a plurality of sub-structures 11311, the plurality of sub-structures 11311 may all be the same in shape and size. At this time, in the Y direction, the plurality of substructures 11311 may be coaxially arranged, that is, central axes of the plurality of substructures 11311 in the Y direction are the same axis.

In addition, at least two substructures 11311 of the plurality of substructures 11311 may not be coaxially arranged in the Y direction. Illustratively, the central axes of the plurality of substructures 11311 are at least partially different, and the projections of the plurality of substructures 11311 on the first surface of the lens 113 at least partially overlap, in which case the projections of the plurality of substructures 11311 on the first surface of the lens 113 may form a ring-shaped pattern.

In an example, with continued reference to fig. 3, when 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 be different, and at this time, the projections of the plurality of substructures 11311 on the first surface of the lens 113 overlap at least partially, and at this time, the projections of the plurality of substructures 11311 on the first surface of the lens 113 may form a ring-shaped pattern. In the Y direction, the plurality of substructures 11311 may be arranged coaxially, that is, the central axes of the plurality of substructures 11311 in the Y direction are the same axis. In addition, at least two substructures 11311 of the plurality of substructures 11311 may not be coaxially arranged in the Y direction. Illustratively, the central axes of the plurality of substructures 11311 are at least partially different.

It is understood that, in the present embodiment, the closed figure may be a regular figure, for example, a circle, a rectangle, a diamond, a triangle, etc. Of course, the closed pattern may be an irregular pattern, which may be determined according to the actual situation. For example, a regular graph may be a graph that can be defined and/or named, and an irregular graph may be a graph that cannot be defined and/or named.

In addition, in this embodiment, the closed pattern may be a completely closed pattern or an approximately closed pattern. For example, when the closed figure is a nearly closed figure, the closed figure may be a figure having a certain gap, for example, a figure having a gap of 0.1 mm.

It can be understood that if one sub-structure 11311 is disposed in the first structure 1131 to block a% of the second partial reflected light R2, after the n sub-structures 11311 are disposed, n × a% of the second partial reflected light R2 can be blocked, that is, the greater the number of the sub-structures 11311 disposed, the greater the blocked second partial reflected light R2, the better the effect. For example, in the present embodiment, "a wraps B" may be understood as "B is located entirely in a".

With continued reference to fig. 3, the first structure 1131 may be disposed flush with the shielding component 21 shielding the first portion of the reflected light R1 in the Y direction, which may be understood as a direction from the outer surface toward the inner surface of the lens 113. Illustratively, when the shape of the projection of the shielding assembly 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 that of the shielding assembly 114, and the outer diameter of the first structure 1131 is the same as that of the shielding assembly 21; in addition, the inner diameter of the first structure 1131 may also be smaller than the inner diameter of the shielding assembly 21, and in order to avoid shielding the light emitted from the light emitting assembly 111, the inner diameter of the first structure 1131 is slightly larger than the diameter of the projection m of the light emitting assembly 111 on the surface of the lens 113, and meanwhile, the outer diameter of the first structure 1131 may also be smaller than the outer diameter of the shielding assembly 21, which is not limited herein. Illustratively, the inner diameter of the first structure 1131 may be smaller than the outer diameter of the first structure 1131.

In addition, the first structure 1131 may be formed by a plurality of substructures 11311 as shown in fig. 3, and may also be formed by other structures, for example, the first structure 1131 may be a spiral structure. For example, as shown in fig. 5, the first structure 1131 may gradually extend from a side close to the inner surface of the lens 113 to the outer surface of the lens 113 in a spiral manner at a certain inclination angle. For example, when the structure of the first structure 1131 is a spiral, the first structure 1131 may be an equidistant spiral or a non-equidistant spiral, which is determined according to the actual situation and is not limited herein; here, in this case, the projection of the first structure 1131 on the inner surface or the outer surface of the lens 113 may be a ring-shaped pattern.

It is understood that the shape of the first structure 1131 may also be other shapes, and the projection of the first structure on the inner surface or the outer surface of the lens 113 may be as long as the projection of the first structure on the inner surface or the outer surface of the lens 113 wraps the light emitting component 111 and/or the light receiving component 112, and is not limited herein.

Illustratively, with continued reference to fig. 3, the thickness of at least one ring of the first structure 1131 in the Y direction may be less than a predetermined thickness to avoid having a thickness that is too large to affect the reliability of the lens 113.

It is understood that, in the present 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.

It is 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 the outer surface of the lens 113 may only wrap the projection of the light emitting component 111 on the inner surface or the outer surface of the lens 113, may only wrap the projection of the light receiving component 112 on the inner surface or the outer surface of the lens 113, and may also wrap the projection of the light emitting component 111 on the inner surface or the outer surface of the lens 113 and the projection of the light receiving component 112 on the inner surface or the outer surface of the lens 113, which will be described in detail below.

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

When the first structure 1131 corresponds to the light emitting assembly 111, the projection of the light emitting assembly 111 on the inner or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 6b, the projection of the light emitting 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, where m1 is located in n 1.

When the first structure 1131 corresponds to the light receiving component 112, a projection of the light receiving component 112 on the inner surface or the outer surface of the lens 113 may be located in a projection of the first structure 1131 on the inner surface or the outer surface of the lens 113. For example, as shown in fig. 6c, the projection of the receiving optical 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, where p1 is located in n 1.

Furthermore, in addition to the above described arrangement of ring structures, two first structures 1131 may be provided inside the lens 113 in the arrangement of the light emitting component 111 and the light receiving component 112 shown in fig. 6 a. Here, the light emitting element 111 may correspond to one first structure 1131, and the light receiving element 112 may correspond to another first structure 1131. At this time, the projection of the emitting light assembly 111 on the inner surface or the outer surface of the lens 113 may be located in the projection of its corresponding first structure 1131 on the inner surface or the outer surface of the lens 113; the projection of the light receiving component 112 on the inner or outer surface of the lens 113 may be located in its corresponding projection of the first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 6d, the projection of the light emitting component 111 on the inner surface of the lens 113 is m1, and the projection of its corresponding first structure 1131 on the inner surface of the lens 113 is a closed circular ring n1, where m1 is located in n 1; the projection of the receiving optical component 112 on the inner surface of the lens 113 is p1, and the projection of its corresponding first structure 1131 on the inner surface of the lens 113 is a closed circular ring n2, where p1 is located in n 2.

In yet another possible implementation, when the emitting light assembly 111 is one, the receiving light assembly 112 may be plural, and the receiving light assembly 112 may be disposed all around the emitting light assembly 111. At this time, light emitted from one light emitting element 111 may be received by a plurality of light receiving elements 112. For example, as shown in fig. 7a, the number of the light emitting elements 111 is 1, the number of the light receiving elements 112 is 4, and the light emitting elements 111 and the light receiving elements 112 are both fixedly disposed on the substrate 114 and are arranged on the substrate 114 at intervals. In fig. 7a, the light emitting element 111 may be disposed on the substrate 114 at a position corresponding to the central region of the lens 113, and the light receiving element 112 may be disposed entirely around the light emitting element 112.

In the arrangement of the light emitting component 111 and the light receiving component 112 shown in fig. 7a, a first structure 1131 may be disposed inside the lens 113, and the first structure 1131 corresponds to the light emitting component 111. At this time, the projection of the emitting light assembly 111 on the inner or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 7b, the projection of the light emitting component 111 on the inner surface of the lens 113 is m1, the projections of the 4 light receiving 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 corresponding to the light emitting component 111 on the inner surface of the lens 113 is a closed circular ring n1, where m1 is located in n 1. It is understood that, at this time, a ring structure corresponding to the light receiving component 112 may also be provided inside the lens 113, for example, in the arrangement shown in fig. 7a, 4 ring structures may be alternatively provided inside the lens 113, and one ring structure corresponds to one light receiving component 112; alternatively, 2 ring structures may be disposed inside the lens 113, and one ring structure corresponds to two receiving optical elements 112; optionally, 1 ring structure may be disposed inside the lens 113, and the ring structure corresponds to one receiving light element 112, and at this time, the other three receiving light elements 112 do not correspond to the ring structure, which may be selected according to actual situations, and is not limited herein.

Furthermore, in addition to the above-described arrangement of ring-shaped structures, in the arrangement of the light emitting module 111 and the light receiving module 112 shown in fig. 7a, a plurality of first structures 1131 may be disposed inside the lens 113, and each light receiving module 112 corresponds to at least one first structure 1131. At this time, the projection of the light receiving component 112 on the inner surface or the outer surface of the lens 113 may be located in the projection of its corresponding first structure 1131 on the inner surface or the outer surface of the lens 113. For example, as shown in fig. 7c, the projection of the light emitting component 111 on the inner surface of the lens 113 is m1, the projections of the 4 light receiving components 112 on the inner surface of the lens 113 are p1, p2, p3 and p4, respectively, the projection of the 4 first structures 1131 on the inner surface of the lens 113 are closed circles n1, n2, n3 and n4, p1 is located in n1, p2 is located in n2, p3 is located in n3, and p4 is located in n 4. It is understood that, at this time, a ring-shaped structure corresponding to the emitting light assembly 111 may be disposed inside the lens 113, and at this time, the projection of the emitting light assembly 111 on the inner surface or the outer surface of the lens 113 may be located in the projection of the corresponding ring-shaped structure on the inner surface or the outer surface of the lens 113.

In addition, in addition to the above-described arrangement of the ring-shaped structures, a plurality of first structures 1131 may be provided inside the lens 113 in the arrangement of the light emitting element 111 and the light receiving element 112 shown in fig. 7 a. At this time, the projections of the multiple light receiving components 112 on the inner or outer surface of the lens 113 may be located in the same projection of the first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 7d, the projection of the light emitting component 111 on the inner surface of the lens 113 is m1, the projections of the 4 light receiving 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 circles n1 and n2, where p1 and p4 are all located in n1 and p2 and p3 are all located in n 2. It is understood that, at this time, a ring-shaped structure corresponding to the emitting light assembly 111 may be disposed inside the lens 113, and at this time, the projection of the emitting light assembly 111 on the inner surface or the outer surface of the lens 113 may be located in the projection of the corresponding ring-shaped structure on the inner surface or the outer surface of the lens 113. In addition, besides that two receiving optical components 112 correspond to one first structure 1131, other numbers of receiving optical components 112 may correspond to one first structure 1131, which may be determined according to actual situations and is not limited herein.

In yet another possible implementation manner, when there is one emitting light assembly 111 and there are a plurality of receiving light assemblies 112, the plurality of receiving light assemblies 112 may be disposed on the substrate 114 in a surrounding manner at a position corresponding to the central region of the lens 113, and the emitting light assembly 111 is disposed outside the ring formed by the plurality of receiving light assemblies 112. For example, as shown in fig. 8a, 4 receiving optical elements 112 may be disposed all around the substrate 114 at positions corresponding to the central region of the lens 113, and 1 emitting optical element 111 is disposed outside the ring formed by the plurality of receiving optical elements 112.

In the arrangement of the light emitting element 111 and the light receiving element 112 shown in fig. 8a, a first structure 1131 may be disposed inside the lens 113, and the first structure 1131 corresponds to 4 light receiving elements 112. At this time, the projections of the 4 light receiving elements 112 on the inner surface or the outer surface of the lens 113 are all located in the projection of the first structure 1131 on the inner surface or the outer surface of the lens 113. For example, as shown in fig. 8b, the projection of the light emitting component 111 on the inner surface of the lens 113 is m1, the projections of the 4 light receiving 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 circular ring n1, where p1, p2, p3 and p4 are all located in n 1. It is understood that, at this time, a ring-shaped structure corresponding to the light emitting component 111 may be disposed inside the lens 113, and at this time, the projection of the light emitting component 111 on the inner surface or the outer surface of the lens 113 is located in the projection of the corresponding first structure 1131 on the inner surface or the outer surface of the lens 113.

In yet another possible implementation, when the receiving light assembly 112 is one, the emitting light assembly 111 may be plural, and the emitting light assembly 111 may be arranged all around the receiving light assembly 112. At this time, the light emitted from the plurality of light emitting elements 111 may be received by one light receiving element 112. For example, as shown in fig. 9a, the number of the receiving light assemblies 112 is 1, the number of the emitting light assemblies 111 can be 4, and both the emitting light assemblies 111 and the receiving light assemblies 112 are fixedly disposed on the substrate 114 and are arranged on the substrate 114 at intervals. In fig. 9a, the light receiving member 112 may be disposed on the substrate 114 at a position corresponding to the central region of the lens 113, and the light emitting member 111 may be disposed entirely around the light receiving member 112.

In the arrangement of the light emitting component 111 and the light receiving component 112 shown in fig. 9a, a first structure 1131 may be disposed inside the lens 113, and the first structure 1131 corresponds to the light receiving component 112. At this time, the projection of the light receiving component 112 on the inner or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 9b, the projections of the 4 light emitting components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4, respectively, 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 corresponding to the light receiving component 112 on the inner surface of the lens 113 is a closed circular ring n1, where p1 is located in n 1. It will be appreciated that a ring-like structure corresponding to the light-emitting element 111 may also be provided inside the lens 113, for example, in the arrangement shown in fig. 9a, another 4 ring structures may be optionally disposed inside the lens 113, and one ring structure corresponds to one light emitting element 111; alternatively, 2 ring structures may be disposed inside the lens 113, and one ring structure corresponds to two light emitting elements 111; alternatively, 1 ring structure may be disposed inside the lens 113, and the ring structure corresponds to one emitting light element 111, and at this time, the other three emitting light elements 111 do not correspond to the ring structure.

Furthermore, in addition to the above-described arrangement of ring structures, in the arrangement of the light emitting and receiving components 111 and 112 shown in fig. 9a, a plurality of first structures 1131 may be disposed inside the lens 113, and each light emitting component 111 corresponds to at least one first structure 1131. At this time, the projection of the emitting light assembly 111 on the inner or outer surface of the lens 113 may be located in the projection of its corresponding first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 9c, the projections of the 4 light emitting components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4, respectively, the projection of the light receiving component 112 on the inner surface of the lens 113 is p1, and the projections of the 4 first structures 1131 on the inner surface of the lens 113 are closed circles n1, n2, n3 and n4, where m1 is located entirely in n1, m2 is located entirely in n2, m3 is located entirely in n3, and m4 is located entirely in n 4. It is understood that, at this time, a ring-shaped structure corresponding to the light receiving component 112 may be disposed inside the lens 113, and at this time, the projection of the light receiving component 112 on the inner surface or the outer surface of the lens 113 may be located in the projection of its corresponding ring-shaped structure on the inner surface or the outer surface of the lens 113.

In addition, in addition to the above-described arrangement of the ring-shaped structures, a plurality of first structures 1131 may be provided inside the lens 113 in the arrangement of the light emitting element 111 and the light receiving element 112 shown in fig. 9 a. At this time, the projections of the multiple light emitting assemblies 111 on the inner or outer surface of the lens 113 may be located in the projection of the same first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 9d, the projections of the 4 light emitting components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4, respectively, the projection of the light receiving 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, where m1 and m4 are all located in n1 and m2 and m3 are all located in n 2. It is understood that, at this time, a ring-shaped structure corresponding to the light receiving component 112 may be disposed inside the lens 113, and at this time, the projection of the light receiving component 112 on the inner surface or the outer surface of the lens 113 may be located in the projection of its corresponding ring-shaped structure on the inner surface or the outer surface of the lens 113. In addition, besides that two light emitting assemblies 111 correspond to one first structure 1131, other numbers of light emitting assemblies 111 correspond to one first structure 1131, which may be determined according to practical situations and is not limited herein.

In yet another possible implementation manner, when there is one receiving light assembly 112, and there are a plurality of emitting light assemblies 111, the plurality of emitting light assemblies 111 may be all disposed around the substrate 114 at a position corresponding to the central region of the lens 113, and the receiving light assembly 112 is disposed outside the ring formed by the plurality of emitting light assemblies 111. For example, as shown in fig. 10a, 4 light emitting elements 111 may be arranged all around the substrate 114 at a position corresponding to the central region of the lens 113, and 1 light receiving element 112 is arranged outside the ring formed by the plurality of light emitting elements 111.

In the arrangement of the light emitting and receiving components 111, 112 shown in fig. 10a, a first structure 1131 may be disposed inside the lens 113, and the first structure 1131 corresponds to 4 light emitting components 111. At this time, the projections of the 4 light emitting components 111 on the inner surface or the outer surface of the lens 113 are all located in the projection of the first structure 1131 on the inner surface or the outer surface of the lens 113. For example, as shown in fig. 10b, the projections of the 4 light emitting components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4, respectively, 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, where m1, m2, m3 and m4 are all located in n 1. It is understood that, at this time, a ring-shaped structure corresponding to the light receiving component 112 may also be disposed inside the lens 113, and in this case, the projection of the light receiving component 112 on the inner surface or the outer surface of the lens 113 is located in the projection of its corresponding first structure 1131 on the inner surface or the outer surface of the lens 113.

In yet another possible implementation manner, when the light emitting component 111 and the light receiving component 112 are both multiple, both the light emitting component 111 and the light receiving component 112 may be fixedly disposed on the substrate 114 and arranged on the substrate 114 at intervals. For example, as shown in fig. 11a, when both the light emitting element 111 and the light receiving element 112 are provided, the light emitting element 111 and the light receiving element 112 may be disposed on the substrate 114 at intervals around a position on the substrate 114 corresponding to the central region of the lens 113.

In the arrangement of the light emitting component 111 and the light receiving component 112 shown in fig. 11a, a first structure 1131 may be disposed inside the lens 113, and the first structure 1131 corresponds to two light emitting components 111. At this time, the projections of the two light emitting assemblies 111 on the inner or outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 11b, the projections of the two light emitting components 111 on the inner surface of the lens 113 are m1 and m2, respectively, the projections of the two light receiving 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, where m1 and m2 are all located in n 1.

In addition, in addition to the above-described arrangement of ring structures, in the arrangement of the light emitting component 111 and the light receiving component 112 shown in fig. 11a, two first structures 1131 may be disposed inside the lens 113, and one first structure 1131 corresponds to one light emitting component 111. At this time, the projection of the emitting light assembly 111 on the inner or outer surface of the lens 113 may be located in the projection of its corresponding first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 11c, the projections of the two light emitting components 111 on the inner surface of the lens 113 are m1 and m2, the projections of the two light receiving components 112 on the inner surface of the lens 113 are p1 and p2, and the projections of the two first structures 1131 on the inner surface of the lens 113 are closed circles n1 and n2, where m1 is located in n1 and m2 is located in n 2. It is understood that, at this time, a ring-shaped structure corresponding to the light receiving component 112 may also be disposed inside the lens 113, for example, in the arrangement shown in fig. 11a, another ring-shaped structure may be disposed inside the lens 113 and the ring-shaped structure corresponds to two light receiving components 112; optionally, two additional ring structures may be further disposed inside the lens 113, and one ring structure corresponds to one light receiving element 112; optionally, an annular structure may be further disposed inside the lens 113, and the annular structure corresponds to one of the light receiving elements 112, and at this time, the other light receiving element 112 does not correspond to the annular structure.

Furthermore, in addition to the above-described arrangement of the ring structures, in the arrangement of the light emitting module 111 and the light receiving module 112 shown in fig. 11a, one first structure 1131 may be disposed inside the lens 113, and the first structure 1131 corresponds to two light receiving modules 112. At this time, the projections of the two light receiving components 112 on the inner or outer surface of the lens 113 are both located in the projection of the first structure 1131 on the inner or outer surface of the lens 113. For example, as shown in fig. 11d, the projections of the two light emitting components 111 on the inner surface of the lens 113 are m1 and m2, respectively, the projections of the two light receiving 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, where p1 and p2 are all located in n 1.

Furthermore, in addition to the above-described arrangement of ring structures, in the arrangement of the light emitting component 111 and the light receiving component 112 shown in fig. 11a, two first structures 1131 may also be provided inside the lens 113, with one first structure 1131 corresponding to one light receiving component 112. At this time, the projection of the light receiving component 112 on the inner surface or the outer surface of the lens 113 may be located in the projection of its corresponding first structure 1131 on the inner surface or the outer surface of the lens 113. For example, as shown in fig. 11e, the projections of the two light emitting components 111 on the inner surface of the lens 113 are m1 and m2, the projections of the two light receiving components 112 on the inner surface of the lens 113 are p1 and p2, and the projections of the two first structures 1131 on the inner surface of the lens 113 are closed circles n1 and n2, where p1 is located in n1 and p2 is located in n 2. It is understood that, at this time, a ring-shaped structure corresponding to the light emitting components 111 may also be disposed inside the lens 113, for example, in the arrangement shown in fig. 11a, another ring-shaped structure may be disposed inside the lens 113 and the ring-shaped structure corresponds to two light emitting components 111; optionally, two additional ring structures are disposed inside the lens 113, and one ring structure corresponds to one emitting light assembly 111; optionally, another ring-shaped structure may be disposed inside the lens 113, and the ring-shaped structure corresponds to one of the light emitting elements 111, and the other light emitting element 111 does not correspond to the ring-shaped structure.

It is understood that, when the light emitting components 111 and the light receiving components 112 are both plural, and the light emitting components 111 and the light receiving components 112 can be both fixedly disposed on the substrate 114 and arranged on the substrate 114 at intervals, in addition to the arrangement described in the above fig. 11, the plural light emitting components 111 can be all arranged around the substrate 114 at positions corresponding to the central regions of the lenses 113, and the plural light receiving components 112 can be arranged outside the ring formed by the plural light emitting components 111, or the plural light receiving components 112 can be all arranged around the substrate 114 at positions corresponding to the central regions of the lenses 113, and the plural light emitting components 111 can be arranged outside the ring formed by the plural light receiving components 112.

For example, as shown in fig. 12a, the light emitting elements 111 may be disposed on the substrate 114 in a position corresponding to the central region of the lens 113, and the light receiving elements 112 may be disposed outside the ring shape formed by the light emitting elements 111. In the arrangement shown in fig. 12a, the plurality of light-emitting components 111 may correspond to one first structure 1131, and in this case, the projection of the plurality of light-emitting components 111 on the inner surface or the outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner surface or the outer surface of the lens 113. As shown in fig. 12b, the projections of the 4 light emitting components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4, respectively, the projections of the 4 light receiving 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 circular ring n1, where m1, m2, m3 and m4 are all located in n 1. It is understood that, at this time, a ring-shaped structure corresponding to the light receiving component 112 may also be disposed inside the lens 113, and is not limited herein.

For example, as shown in fig. 13a, the light receiving elements 112 may be disposed on the substrate 114 in a position corresponding to the central region of the lens 113, and the plurality of light emitting elements 111 may be disposed outside the ring formed by the plurality of light receiving elements 112. In the arrangement shown in fig. 13a, the plurality of light receiving elements 112 may correspond to one first structure 1131, and in this case, the projection of the plurality of light receiving elements 112 on the inner surface or the outer surface of the lens 113 may be located in the projection of the first structure 1131 on the inner surface or the outer surface of the lens 113. As shown in fig. 13b, the projections of the 4 light emitting components 111 on the inner surface of the lens 113 are m1, m2, m3 and m4, respectively, the projections of the 4 light receiving 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 circular ring n1, where p1, p2, p3 and p4 are all located in n 1. It is understood that, at this time, a ring-shaped structure corresponding to the light emitting component 111 may also be disposed inside the lens 113, which may be selected according to practical situations and is not limited herein.

In addition, when the light emitting elements 111 and the light receiving elements 112 are both plural, and the light emitting elements 111 and the light receiving elements 112 can be both fixedly disposed on the substrate 114 and arranged at intervals on the substrate 114, in addition to the arrangement described in fig. 11, 12 and 13, the plural light emitting elements 111 and the plural light receiving elements 112 can also be arranged at intervals on the substrate 114 all around the position on the substrate 114 corresponding to the central region of the lens 113. For example, as shown in fig. 14, when the light emitting elements 111 and the light receiving elements 112 are four each, the light emitting elements 111 and the light receiving elements 112 may be arranged on the substrate 114 at intervals around a position on the substrate 114 corresponding to the central region of the lens 113. In the arrangement shown in fig. 14, each light-emitting assembly 111 may correspond to one first structure 1131, and/or each light-receiving assembly 112 may correspond to one first structure 1131.

It is understood that, in the present embodiment, the number and the arrangement of the light emitting assemblies 111, the light receiving assemblies 112 and the first structures 1131 shown in fig. 6 to 14 are only schematic illustrations, and it is obvious to a person skilled in the art that the number and the arrangement of the light emitting assemblies 111, the light receiving assemblies 112 and the first structures 1131 can be adjusted according to actual needs, and are not limited herein.

In one example, the projection of the first structure 1131 on the inner or outer surface of the lens 113 may 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 may 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 may be referred to as a third projection. Further, the inner or outer surface of the lens 113 may be referred to as a first surface. Illustratively, the inner surface of the lens 113 may be a surface near one side of the light emitting element 111 and the light receiving element 112; the outer surface of the lens 113 may be the surface of the side facing away from the light emitting component 111 and the light receiving component 112, i.e. the side facing away from the inner surface.

It should be noted that, in the embodiment of the present application, the distance between the light emitting component 111 and the light receiving component 112 may be selected according to needs, and is not limited herein. Illustratively, the light emitting component 111 and the light receiving component 112 may be spaced 5 millimeters apart.

It is to be understood that the illustrated structure of the embodiments of the present application does not constitute a specific limitation to the smart watch. In other embodiments of the present application, the smart watch may include more or fewer components than shown, or combine certain components, or split certain components, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware. In addition, the number, shape, arrangement and the like of the light emitting components and the light receiving components illustrated in the embodiments of the present application do not constitute a specific limitation to the light emitting components and the light receiving components. In other embodiments of the present application, the number, shape, arrangement manner, and the like of the light emitting component, the light receiving component, and the ring structure may be other numbers, shapes, and arrangement methods, which are not limited herein.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (19)

1. A light detection assembly, characterized by: the lens is positioned on the light outlet side of the at least one light emitting component, and light emitted by the at least one light emitting component passes through the lens and is received by the at least one light receiving component after being reflected;

the inside of the lens is provided with at least one first structure, the projection of the at least one first structure on the first surface of the lens is a first projection, and the first projection is an annular figure;

the projection of the at least one light-emitting component on the first surface is a second projection and the projection of the at least one light-receiving 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.

2. A light detecting assembly according to claim 1, wherein the first structure comprises a plurality of sub-structures arranged in a sequential spaced-apart arrangement in a direction of the inner surface towards the outer surface of the lens.

3. A light detecting assembly according to claim 2, wherein a plurality of said substructures are all the same in shape and size.

4. A light detection assembly as claimed in claim 2, wherein at least one of the shape and size of a plurality of the sub-structures is different and the projections of the plurality of sub-structures on the first surface at least partially overlap.

5. A light detection assembly as claimed in any one of claims 2 to 4, wherein a plurality of the sub-structures are arranged coaxially in a direction from the inner surface towards the outer surface of the lens.

6. A light detecting assembly according to any of claims 2-4, wherein a central axis of a plurality of said sub-structures is at least partly different in a direction from the inner surface towards the outer surface of the lens, and projections of a plurality of said sub-structures onto the first surface overlap at least partly.

7. A light detection assembly as claimed in any one of claims 2 to 6, wherein a plurality of said sub-structures are arranged equidistantly in a direction from the inner surface towards the outer surface of the lens.

8. A light detection assembly as in any of claims 2-7, wherein the shape of the sub-structure is a closed figure.

9. A light detection assembly as defined in claim 8, wherein the closed pattern is a regular pattern.

10. A light detection assembly as claimed in claim 1, wherein the first structure is arranged in a spiral shape in a direction from the inner surface towards the outer surface of the lens.

11. A light detection assembly as defined in claim 10, wherein the spiral shape is an equidistant spiral.

12. A light detection assembly as claimed in any one of claims 1 to 11, wherein said light emitting assembly is one or more, the projection of said light emitting assembly on said first surface comprises one or more of said second projections, said lens has one or more of said first structures therein, the projection of one or more of said first structures on said first surface comprises one or more of said first projections, and the one or more of said second projections are all located in the one of said first projections or in one of said first projections.

13. A light detection assembly as claimed in any one of claims 1 to 11, wherein said light emitting assembly is plural, a projection of said light emitting assembly on said first surface includes plural of said second projections, an interior of said lens has plural of said first structures, and a projection of plural of said first structures on said first surface includes plural of said first projections;

wherein each of the second projections is respectively located in one of the first projections;

alternatively, at least two of the second projections of the plurality of second projections are located in one of the first projections of the plurality of first projections.

14. A light detection assembly as claimed in any one of claims 1 to 11, wherein said light receiving assembly is one or more, the projection of said light receiving assembly on said first surface comprises one or more of said third projections, said lens has one or more of said first structures therein, the projection of one or more of said first structures on said first surface comprises one or more of said first projections, and the one or more of said third projections are all located in the one of said first projections or in one of said first projections.

15. A light detection assembly as claimed in any one of claims 1 to 11, wherein said light receiving assembly is plural, a projection of said light receiving assembly on said first surface comprises plural of said third projections, an interior of said lens has plural of said first structures, and a projection of plural of said first structures on said first surface comprises plural of said first projections;

wherein each of the third projections is respectively located in one of the first projections;

alternatively, at least two of the third projections of the plurality of third projections are located in one of the first projections of the plurality of first projections.

16. A light detection assembly according to any of claims 1-11,

the emitting light assembly is plural, and the projection of the emitting light assembly on the first surface comprises a plurality of the second projections;

the light receiving component is multiple, and the projection of the light receiving component on the first surface comprises multiple third projections;

the inner part of the lens is provided with a plurality of first structures, and the projection of the first structures on the first surface comprises a plurality of 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 first projection wraps one second projection or one third projection.

17. A light detecting assembly according to any of claims 1-16, wherein said first structure is inscribed in said lens, said first structure being isolated from an exterior of said lens.

18. A light detection assembly as in any of claims 1-17, wherein the first surface is an inner or outer surface of the lens.

19. A wearable device comprising the light detection assembly of any of claims 1-18.

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