Wearable devices

Abstract

The present application relates to a wearable device. The wearable device includes a bonding layer, a light-emitting element and a reflective member. The light-emitting element is disposed in the bonding layer and has a light-emitting surface. The reflective member is disposed in the bonding layer, and the reflective member has a reflective surface, and the reflective surface and the light-emitting surface face the same side, and when the light-emitting surface emits light, at least part of the light is transmitted through the bonding layer to the reflective surface, and the reflective surface is used to reflect the light emitted by the light-emitting surface and transmitted through the bonding layer to the reflective surface. In the above-mentioned wearable device, the provision of the reflective member can increase the probability of the light emitted by the light-emitting element emitting out of the bonding layer, improve the light utilization efficiency of the wearable device, and thus reduce the power consumption of the wearable device.

Description

Technical Field

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

[0002] Heart rate and blood oxygen saturation are important vital signs of the human body. In order to monitor the user's heart rate and blood oxygen saturation and other indicators, wearable devices such as smart rings and smart watches equipped with photoplethysmograph (PPG) modules have emerged. The photoplethysmograph module is usually equipped with a light-emitting diode (LED) and a photodiode (PD). The LED can emit light to illuminate the user's vascular tissue, and the photodiode can receive light scattered and reflected by the vascular tissue to obtain changes in blood volume, thereby monitoring the user's heart rate and blood oxygen saturation and other indicators. However, traditional wearable devices have low light utilization efficiency and high power consumption. Summary of the invention

[0003] The embodiment of the present application provides a wearable device to solve the problems of low light utilization efficiency and high power consumption of traditional wearable devices.

[0004] A wearable device, comprising:

[0005] Binding layer;

[0006] a light emitting element, disposed in the adhesive layer and having a light emitting surface; and

[0007] A reflective member is arranged in the adhesive layer, and the reflective member has a reflective surface. The reflective surface and the luminous surface face the same side. When the luminous surface emits light, at least part of the light is transmitted through the adhesive layer to the reflective surface. The reflective surface is used to reflect the light emitted by the luminous surface and transmitted through the adhesive layer to the reflective surface.

[0008] In the above-mentioned wearable device, the light emitted by the light-emitting element located in the adhesive layer can be emitted from the adhesive layer from the interface between the adhesive layer and the air. A reflective surface is provided adjacent to the light-emitting surface, and the reflective surface is provided on the same side as the light-emitting surface. At least part of the light emitted by the light-emitting element and reflected by the adhesive layer to the reflective surface can be re-reflected to the interface between the adhesive layer and the air, which is beneficial to increase the probability of the light emitted by the light-emitting element being emitted from the adhesive layer, improve the light utilization efficiency of the wearable device, and thus help reduce the power consumption of the light-emitting element. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 Schematic diagram of a cross-section of a wearable device in some embodiments.

[0011] Figure 2 for Figure 1 A partial enlarged schematic diagram of area A of the wearable device shown.

[0012] Figure 3 Schematic diagram of the light path of part of the light emitted by the light-emitting element in some embodiments.

[0013] Figure 4 Schematic diagram of the structure in which the light-emitting element is disposed on the reflective element in some embodiments.

[0014] Reference numerals:

[0015] 10. Wearable device; 11. Light-emitting element; 111. Light-emitting surface; 12. Photoelectric sensor; 13. Glue layer; 131. Light-emitting surface; 14. Reflector; 141. Reflective surface; 1411. First part; 1412. Second part; 1413. Third part; 1414. Fourth part; 142. Accommodating groove; 15. Shell; 16. First direction; 17. Second direction. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0017] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0018] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0019] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0020] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0022] Traditional wearable devices with photoplethysmography modules are usually equipped with light-emitting diodes and photodiodes. The light-emitting diodes are used to emit light to the user's vascular tissue, and the photodiodes are used to receive light scattered and reflected by the user's vascular tissue to obtain changes in the user's blood volume, thereby monitoring indicators such as the user's heart rate and blood oxygen saturation. In traditional wearable devices, the light-emitting diodes are usually set in the adhesive layer, and the light emitted by the light-emitting diodes is emitted from the wearable device from the interface between the adhesive layer and the air. Since the refractive index of the adhesive layer material is usually much greater than the refractive index of the air, the critical angle of total reflection at the interface is small. The light is emitted from the adhesive layer to the air, which is from a dense medium to a sparse medium. When the incident angle is less than the critical angle of total reflection, total reflection is likely to occur and cannot be emitted from the adhesive layer, resulting in low light utilization efficiency of the wearable device, increased power consumption of the light-emitting element, and a higher-power light-emitting element is required to meet the light output power requirements, which is likely to increase the size of the wearable device.

[0023] In order to solve the above problems, the present application provides a wearable device.

[0024] refer to Figure 1 As shown, Figure 1 Schematic diagram of a cross section of a wearable device 10 in some embodiments. The wearable device 10 may be an electronic product such as a smart ring or a smart watch equipped with a photoplethysmography module. The wearable device 10 may be worn on a user's finger or wrist and detect indicators such as the user's heart rate and blood oxygen saturation through the photoplethysmography module.

[0025] In some embodiments, the photoplethysmography module includes a light emitting element 11 and a photoelectric sensor 12. The light emitting element 11 includes but is not limited to an infrared light emitting diode or a red light emitting diode. The light emitting element 11 may also include one of a red light emitting diode and an infrared light emitting diode and a green light emitting diode. The type and number of light emitting diodes in the light emitting element may be set according to monitoring requirements. The photoelectric sensor 12 may be any applicable sensor such as a photodiode. The light emitting element 11 is capable of emitting light. The light emitted by the light emitting element 11 passes through the user's skin and reaches the user's vascular tissue. Part of the light is absorbed by the vascular tissue, and the rest of the light is scattered and reflected by the vascular tissue. The photoelectric sensor 12 is capable of receiving at least part of the light reflected and scattered from the vascular tissue. By monitoring the intensity change of the light received by the photoelectric sensor 12, the change in the user's blood volume can be obtained, thereby monitoring indicators such as the user's heart rate and blood oxygen saturation.

[0026] Furthermore, combined with Figure 1 and Figure 2 As shown, Figure 2 for Figure 1 A partial enlarged schematic diagram of area A of the wearable device 10 shown. In some embodiments, the wearable device 10 further includes a glue layer 13 and a reflector 14, and the light-emitting element 11 and the reflector 14 are arranged in the glue layer 13. The material of the glue layer 13 can be any suitable organic encapsulation glue, and the glue layer 13 can be used as a packaging structure of the wearable device 10. After the light-emitting element 11, the reflector 14 and the photoelectric sensor 12 are assembled, the organic encapsulation glue can be injected into the wearable device 10 by a vacuum glue potting method to provide insulation protection for the light-emitting element 11, the photoelectric sensor 12 and other components. When the organic encapsulation glue solidifies, the glue layer 13 is formed. The light-emitting element 11 has a light-emitting surface 111, and the light emitted by the light-emitting element 11 can be emitted from the light-emitting surface 111 to the light-emitting element 11. When the wearable device 10 is worn, the light-emitting surface 111 of the light-emitting element 11 can face the user's finger or wrist. The reflective element 14 has a reflective surface 141 , which is disposed on the same side as the luminous surface 111 . In other words, when the wearable device 10 is worn, the reflective surface 141 may also face the user's fingers or wrist, and the reflective surface 141 is disposed adjacent to the luminous surface 111 .

[0027] In the above-mentioned wearable device 10, the light emitted by the light-emitting element 11 located in the adhesive layer 13 can be emitted from the adhesive layer 13 from the interface between the adhesive layer 13 and the air. A reflective surface 141 is provided adjacent to the light-emitting surface 111, and the reflective surface 141 is provided on the same side as the light-emitting surface 111. At least part of the light emitted from the light-emitting surface 111 and totally reflected on the surface of the adhesive layer 13 can be emitted onto the reflective surface 141. The reflective surface 141 can re-reflect at least part of the light reflected by the adhesive layer 13 to the reflective surface 141 to the interface between the adhesive layer 13 and the air, so that at least part of the reflected light can be re-emitted from the adhesive layer 13 and hit the user's vascular tissue, which is beneficial to improve the probability of the light emitted by the light-emitting element 11 being emitted from the adhesive layer 13, and improve the light utilization efficiency of the wearable device 10, thereby helping to reduce the power consumption of the light-emitting element 11. In addition, due to the improvement in light utilization efficiency, the use of a light-emitting element 11 with lower power can also meet the monitoring requirements, which is beneficial to reducing the space occupied by the light-emitting element 11, thereby helping to reduce the size of the wearable device 10.

[0028] It should be noted that, in the present application, the description that the reflective surface 141 is disposed adjacent to the light-emitting surface 111 can be understood as at least part of the light emitted from the light-emitting surface 111 being reflected by the interface between the adhesive layer 13 and the air and being able to be projected onto the reflective surface, and then being reflected again by the reflective surface onto the interface between the adhesive layer 13 and the air, so as to achieve the effect of improving the light utilization efficiency. The specific degree of proximity can be designed according to the reflection requirements of the light. For example, in some embodiments, when the light emitted by the maximum divergence angle of the light-emitting element 11 is reflected by the interface between the adhesive layer 13 and the air and is able to be projected onto the reflective surface 141, it can be considered that the reflective surface 141 is disposed adjacent to the light-emitting surface 111. In some embodiments, the adhesive layer 13 has a light-emitting surface 131 opposite to the light-emitting surface 111, and at least part of the light emitted from the light-emitting surface 111 can be emitted from the light-emitting surface 131. The light-emitting surface 131 of the adhesive layer 13 can be understood as the interface between the adhesive layer 13 and the air.

[0029] Further, refer to Figure 1 and Figure 3As shown, in some embodiments, the reflective surface 141 is a diffuse reflection surface. In other words, the light reflected from the light emitting surface 131 to the reflective surface 141 can be diffusely reflected by the reflective surface 141 to form multiple light beams with different emitting directions. After the diffuse reflection effect of the reflective surface 141, the light is emitted to the light emitting surface 131 from multiple different directions. It can be understood that if the reflective surface 141 is a smooth reflective surface, after the light reflected by the light emitting surface 131 is reflected by the reflective surface 141, the reflection angle on the reflective surface 141 is close to the incident angle, and is also close to the incident angle on the light emitting surface 131 when reflected from the light emitting surface 131. Therefore, when the light is reflected again by the reflective surface 141 to the light emitting surface 131, the incident angle is still likely to be greater than the critical angle of total reflection, so that it is reflected by the light emitting surface 131 again. By setting the reflective surface 141 as a diffuse reflection surface, when the light is reflected by the light emitting surface 131 to the reflective surface 141, it can be reflected by the light emitting surface 131 to the light emitting surface 131 in all directions, which can increase the probability that the incident angle of the light on the light emitting surface 131 is less than the critical angle of total reflection, thereby increasing the probability of the light emitting from the light emitting surface 131 out of the adhesive layer 13, and effectively improving the light efficiency of the wearable device 10.

[0030] There is no limit to the way in which the reflective surface 141 forms a diffuse reflection surface. For example, the reflective surface 141 can be provided with a diffuse reflection film layer to form a diffuse reflection surface, or the reflective surface 141 can also be provided with an irregular microstructure to form a diffuse reflection surface. The reflective surface 141 can be set to a frosted surface or a matte surface, and a diffuse reflection effect is produced by the uneven irregular microstructure set on the surface.

[0031] In some embodiments, the projections of the reflective surface 141 and the light emitting surface 111 on the light emitting surface 131 are connected to each other. In other words, there is no gap between the projections of the reflective surface 141 and the light emitting surface 111 on the light emitting surface 131. The reflective surface 141 may be connected to the light emitting surface 131, or connected to the side of the light emitting element 11. In this way, the light emitted by the reflective surface 141 can be reflected by the light emitting surface 131 to the greatest extent and then reflected by the reflective surface 141 to the light emitting surface 131, thereby improving the utilization efficiency of the light.

[0032] Further, refer to Figure 1 and Figure 4As shown, in some embodiments, the projection of the reflective surface 141 on the light emitting surface 131 surrounds the light emitting surface 111 along the periphery of the projection of the light emitting surface 111 on the light emitting surface 131. The light emitting element 11 may be surrounded by the reflector 14 on all sides, and the portions of the reflector 14 located on all sides of the light emitting element 11 are provided with the reflective surface 141. For example, in some embodiments, the reflective surface 141 has a first portion 1411 and a second portion 1412 disposed on both sides of the light emitting surface 111 along the first direction 16, and the reflective surface 141 also has a third portion 1413 and a fourth portion 1414 disposed on both sides of the light emitting surface 111 along the second direction 17, and the first portion 1411, the third portion 1413, the second portion 1412, and the fourth portion 1414 are sequentially connected to form the entire reflective surface 141. The first direction 16 and the second direction 17 are two mutually perpendicular directions on the light-emitting surface 111. For example, the light-emitting surface 111 may be roughly rectangular and have a length direction and a width direction. The first direction 16 and the second direction 17 may be respectively the length direction and the width direction of the light-emitting surface 111. The reflective surface 141 is arranged to surround the light-emitting surface 111 so that when the light emitted by the light-emitting surface 111 is reflected by the light-emitting surface 131, no matter which direction the light is reflected in around the light-emitting surface 111, it can be projected onto the reflective surface 141 and thus reflected by the reflective surface 141 onto the light-emitting surface 131, thereby maximizing the light utilization efficiency of the wearable device 10.

[0033] It can be understood that the larger the coverage area of ​​the reflective surface 141 on the projection of the light emitting surface 131, the more light can be reflected to the light emitting surface 131, thereby improving the light utilization efficiency of the wearable device 10 to a greater extent. In some embodiments, the size of the first part 1411 and the second part 1412 in the first direction 16 is larger than the size of the light emitting surface 111 in the first direction 16, and the size of the third part 1413 and the fourth part 1414 in the second direction 17 is larger than the size of the light emitting surface 111 in the second direction 17, so that the reflective surface 141 has sufficient coverage area in each part around the light emitting surface 111, and can effectively reflect light to the light emitting surface 131, thereby improving the light utilization efficiency of the wearable device 10. Further, in some embodiments, the size of the first part 1411 and the second part 1412 in the first direction 16 is greater than or equal to twice the size of the light emitting surface 111 in the first direction 16, and the size of the third part 1413 and the fourth part 1414 in the second direction 17 is greater than or equal to twice the size of the light emitting surface 111 in the second direction 17. By increasing the coverage area of ​​the reflective surface 141, the light utilization efficiency of the wearable device 10 can be further improved. In some embodiments, the size of the first portion 1411 and the second portion 1412 in the first direction 16 can be twice the size of the light-emitting surface 111 in the first direction 16, and the size of the third portion 1413 and the fourth portion 1414 in the second direction 17 can be twice the size of the light-emitting surface 111 in the second direction 17, which can effectively improve the light utilization efficiency of the wearable device 10 and also prevent the size of the reflective member 14 from being too large, which is conducive to compressing the volume of the wearable device 10.

[0034] Of course, the above are only some examples of the size of the reflective surface 141. The reflective surface 141 can also be designed according to different requirements of light output efficiency and light output area. For example, in the optical path simulation design, the target coverage area and / or target light output efficiency of the light emitted by the light-emitting element 11 on the light output surface 131 after being reflected by the reflective surface 141 can be set, and the reflective surface 141 that can meet the target coverage area and / or target light output efficiency can be obtained through simulation.

[0035] The arrangement of the light emitting element 11 and the reflective element 14 is not limited, refer to Figure 2As shown, in some embodiments, the reflector 14 is roughly in the shape of a rectangular parallelepiped, and a receiving groove 142 is provided on one side of the reflective surface 141 of the reflector 14. At least part of the light-emitting element 11 is received in the receiving groove 142, and the light-emitting element 11 can be fixed in the receiving groove 142 of the reflector 14 by any suitable fixing method such as gluing. In this way, the various parts of the reflector 14 are integrally formed, and the light-emitting element 11 is fixed on the reflector 14, which can improve the setting accuracy and structural stability of the light-emitting element 11 and the reflector 14, so that the reflector 14 can form a good match with the light-emitting element 11, and effectively improve the light utilization efficiency of the wearable device 10. Of course, in other embodiments, the reflector 14 can also be an independent element arranged on the side of the light-emitting element 11, and the four parts of the reflector 14 arranged around the light-emitting element 11 can be four split structures.

[0036] In some embodiments, the light-emitting surface 111 of the light-emitting element 11 protrudes from the reflective surface 141 or is flush with the reflective surface 141. In other words, the distance between the light-emitting surface 111 and the light-emitting surface 131 is less than or equal to the distance between the reflective surface 141 and the light-emitting surface 131. For example, when the light-emitting element 11 is disposed in the receiving groove 142 of the reflector 14, the side surface of the light-emitting element 11 abuts against the groove wall, and the light-emitting surface 111 of the light-emitting element 11 can be higher than the reflective surface 141, or just flush with and connected to the reflective surface 141. In this way, the light emitted by the light-emitting surface 111 will not be blocked by the reflector 14 within the range of the maximum divergence angle. When the reflector 14 is disposed, it is also possible to avoid the situation where the reflector 14 blocks the light from being emitted and reduces the light utilization efficiency.

[0037] In some embodiments, when the wearable device 10 is a smart ring or a smart watch, the wearable device 10 may further include a housing 15, which is generally annular and has an outer surface and an inner surface disposed opposite to each other. When the wearable device 10 is worn, the inner surface of the housing 15 may face the user's finger or wrist. In some embodiments, the reflector 14 may be disposed on the inner surface of the housing 15, and the light-emitting element 11 may be disposed on the reflector 14, or both the light-emitting element 11 and the reflector 14 may be disposed on the inner surface of the housing 15. During the assembly process of the wearable device 10, after the light-emitting element 11 and the reflector 14 are disposed on the housing 15, an organic encapsulating glue may be poured into one side of the inner surface of the housing 15, and after the organic encapsulating glue solidifies, a glue layer 13 covering the reflector 14 and the light-emitting element 11 is formed.

[0038] In some embodiments, the shape of the adhesive layer 13 is adapted to the shape of the inner surface of the shell 15. The adhesive layer 13 is roughly annular. The adhesive layer 13 also has an inner surface and an outer surface that are arranged opposite to each other. When the wearable device 10 is worn, the inner surface of the adhesive layer 13 can also face the user's fingers or wrist. The inner surface of the adhesive layer 13 is the above-mentioned light emitting surface 131, and the light emitting surface 131 is opposite to the light emitting surface 111 of the light emitting element 11.

[0039] In some embodiments, the reflective surface 141 of the reflector 14 is a concave arc surface. When the light-emitting element 11 is disposed in the receiving groove 142 of the reflector 14, the reflective surface 141 can be a concave arc surface as a whole, and the receiving groove 142 is set at the bottom of the concave arc surface of the reflective surface 141, and the reflector 14 is disposed at the bottom of the concave arc surface of the reflective surface 141. The reflecting surface 141 is set to be a concave arc surface facing the light emitting surface 131, so that the reflecting surface 141 has the effect of converging light, thereby being able to change the emission angle of the light reflected by the light emitting surface 131 to the reflecting surface 141 when it is reflected by the reflecting surface 141. For example, it can reduce the emission angle of the light after being reflected by the reflecting surface 141, which is beneficial to reduce the incident angle of the light reflected by the reflecting surface 141 to the light emitting surface 131 on the light emitting surface 131, and increase the probability that the incident angle of the light on the light emitting surface 131 is less than the critical angle of total reflection, which is beneficial to increase the probability that the light reflected by the reflecting surface 141 to the light emitting surface 131 is emitted from the adhesive layer 13 from the light emitting surface 131, thereby further improving the light utilization efficiency of the wearable device 10.

[0040] Furthermore, in some embodiments, the curvature of the reflective surface 141 is substantially the same as the curvature of the light emitting surface 131 of the adhesive layer 13, and the shape of the reflective surface 141 is adapted to the shape of the light emitting surface 131. This improves light utilization efficiency while also helping to maintain the flatness of the surface of the adhesive layer 13 when the adhesive layer 13 is formed by pouring glue, thereby avoiding unevenness on the light emitting surface 131, making it less likely that the surface of the wearable device 10 will squeeze the user, thereby helping to improve the wearing comfort of the wearable device 10.

[0041] In some embodiments, the refractive index of the adhesive layer 13 is 1.59, the size of the reflector 14 in the first direction 16 is 8 mm, the size in the second direction 17 is 4 mm, the thickness of the reflector 14 is 0.64 mm, the reflective surface 141 is set to a white Lambertian diffuse reflection surface, and the light emitted by the light-emitting element 11 has a light output efficiency of approximately 76.3% on the light output surface 131 of the adhesive layer 13. It can be seen that compared with the light output efficiency of traditional wearable devices of only 30%-40%, the wearable device 10 provided in the present application can effectively improve the light utilization efficiency of the wearable device 10 and reduce the power consumption of the wearable device 10.

[0042] It is understandable that in the wearable device 10, the light emitting element 11 may be provided with a corresponding photoelectric sensor 12, and the photoelectric sensor 12 is used to receive the light emitted by the corresponding light emitting element 11 and reflected and scattered by the user's vascular tissue, so as to monitor the user's heart rate and / or blood oxygen saturation and other indicators. Figure 1 As shown, in some embodiments, the wearable device 10 may also be provided with a plurality of light emitting elements 11. Figure 1 In the figure, two light-emitting elements 11 are taken as an example, and three, four or more light-emitting elements 11 can also be provided. The plurality of light-emitting elements 11 are arranged in sequence and spaced apart along the extension direction of the adhesive layer 13. The wearable device 10 also includes a plurality of photoelectric sensors 12. The photoelectric sensors 12 are arranged one by one with the light-emitting elements 11. The photosensitive surface of each photoelectric sensor 12 and the light-emitting surface 111 of the corresponding light-emitting element 11 face the same side. Each photoelectric sensor 12 is used to receive light emitted by a corresponding light-emitting element 11 and reflected and scattered by the user's vascular tissue. When the wearable device 10 monitors the user's heart rate, blood oxygen saturation and other indicators, it is necessary to rotate the wearable device 10 until the corresponding light-emitting element 11 and the photoelectric sensor 12 are opposite to the user's position to be monitored to ensure the accuracy of monitoring. A plurality of groups of light-emitting elements 11 and photoelectric sensors 12 are provided, and any group of corresponding light-emitting elements 11 and photoelectric sensors 12 can be opposite to the user's position to be monitored to monitor the user's indicators, which is conducive to improving the convenience of using the wearable device 10. In some embodiments, multiple light-emitting elements 11 are evenly arranged along the extension direction of the adhesive layer 13, and the photoelectric sensors 12 corresponding to the multiple light-emitting elements 11 are also evenly arranged along the extension direction of the adhesive layer 13. The arrangement of multiple groups of light-emitting elements 11 and photoelectric sensors 12 along the adhesive layer 13 can be reasonably allocated, so that the superimposed detection range of the multiple groups of light-emitting elements 11 and photoelectric sensors 12 is maximized, which can further improve the convenience of use of the wearable device 10.

[0043] It can be understood that in order to avoid the movement of the wearable device 10 relative to the wearing part when worn and affecting the detection, the arrangement of the light-emitting element 11 and the photoelectric sensor 12 can be set according to the detectable range of the wearing part, so that no matter which direction the wearable device 10 is rotated to, it can be detected, and the user does not need to consider the wearing direction when wearing it, which is convenient for users to use.

[0044] Of course, multiple groups of light emitting elements 11 and photoelectric sensors 12 can also be monitored at the same time. By comparing the monitoring results of multiple groups of light emitting elements 11 and photoelectric sensors 12, it is helpful to improve the monitoring efficiency and accuracy. At the same time, the wearable device 10 provided by the present application is provided with a reflector 14, which can improve the light utilization efficiency of the wearable device 10, reduce the energy consumption of the wearable device 10, and reduce the size of the wearable device 10. The reflector 14 is arranged in the adhesive layer 13, which will not increase the size of the adhesive layer 13, nor will it cause the plane of the adhesive layer 13 to be incomplete. While improving the light utilization efficiency, it will not increase the size or weight of the wearable device 10, will not affect the aesthetics of the wearable device 10, and can ensure the wearing comfort of the wearable device 10.

[0045] In some embodiments, the photoplethysmography module in the wearable device 10 may also include a control element (not shown), which is integrated with a computing chip, a circuit board and other structures, and is electrically connected to the photoelectric sensor 12. The control element can obtain the user's heart rate and blood oxygen saturation and other indicators according to the change of the photoelectric signal received by the photoelectric sensor 12. The control element can be the central processor of the wearable device 10, or it can be a chip in the control element specifically used for user indicator monitoring. The wearable device 10 may also include other elements, and the above-mentioned elements may also be replaced by other elements. As long as the wearable device 10 can monitor the user's heart rate, blood oxygen saturation and other indicators, it will not be repeated in this application.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A wearable device, characterized in that: include: Binding layer; A light emitting element is disposed in the adhesive layer and has a light emitting surface; as well as, A reflective member is arranged in the adhesive layer, and the reflective member has a reflective surface. The reflective surface and the luminous surface face the same side. When the luminous surface emits light, at least part of the light is transmitted through the adhesive layer to the reflective surface. The reflective surface is used to reflect the light emitted by the luminous surface and transmitted through the adhesive layer to the reflective surface.

2. The wearable device according to claim 1, characterized in that: A receiving groove is provided on one side of the reflective surface of the reflective element, at least a part of the light emitting element is received in the receiving groove, and the reflective surface is arranged to face away from the reflective element.

3. The wearable device according to claim 1, characterized in that: The light emitting surface protrudes from the light reflecting surface or is flush with the light reflecting surface.

4. The wearable device according to claim 1, characterized in that: The adhesive layer is roughly annular, the inner surface of the adhesive layer is opposite to the light-emitting surface, and the reflective surface is a plane or a concave arc surface.

5. The wearable device according to claim 4, characterized in that: The curvature of the reflective surface is substantially the same as that of the inner surface of the binding layer.

6. The wearable device according to claim 1, characterized in that: The first direction and the second direction are two mutually perpendicular directions on the light-emitting surface. The reflective surface has a first part and a second part arranged on both sides of the light-emitting surface along the first direction. The reflective surface also has a third part and a fourth part arranged on both sides of the light-emitting surface along the second direction.

7. The wearable device according to claim 6, characterized in that: The sizes of the first part and the second part in the first direction are larger than the size of the light emitting surface in the first direction, and the sizes of the third part and the fourth part in the second direction are larger than the size of the light emitting surface in the second direction.

8. The wearable device according to claim 7, characterized in that: The sizes of the first part and the second part in the first direction are greater than or equal to twice the size of the light-emitting surface in the first direction, and the sizes of the third part and the fourth part in the second direction are greater than or equal to twice the size of the light-emitting surface in the second direction.

9. The wearable device according to claim 1, characterized in that: The reflective surface is a diffuse reflection surface.

10. The wearable device according to claim 9, characterized in that: The reflective surface is provided with a diffuse reflection film layer to form a diffuse reflection surface, or the reflective surface is provided with an irregular microstructure to form a diffuse reflection surface.

11. The wearable device according to claim 1, characterized in that: The adhesive layer has a light emitting surface opposite to the light emitting surface, and the light reflecting surface and the projection of the light emitting surface on the light emitting surface are connected to each other.

12. The wearable device according to claim 1, characterized in that: The adhesive layer has a light emitting surface opposite to the light emitting surface, and the projection of the reflective surface on the light emitting surface surrounds the light emitting surface along the periphery of the projection of the light emitting surface on the light emitting surface.

13. The wearable device according to claim 1, characterized in that: The wearable device also includes a shell, which is roughly ring-shaped. The reflective element is arranged on the inner surface of the shell, and the adhesive layer covers the reflective element and the light-emitting element.

14. The wearable device according to claim 1, characterized in that: There are multiple light-emitting elements, which are spaced apart and evenly arranged along the extension direction of the adhesive layer. The wearable device also includes multiple photoelectric sensors, which are arranged one-to-one corresponding to the light-emitting elements. The photosensitive surface of each photoelectric sensor and the light-emitting surface of the corresponding light-emitting element face the same side.

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