Wearable devices

Abstract

The present application relates to a wearable device. The wearable device includes a bonding layer, a light-emitting element and an isolating member. The bonding layer has a light-emitting surface, the light-emitting element is arranged in the bonding layer, and has a light-emitting surface arranged toward the light-emitting surface; the isolating member includes a main body portion and a light-transmitting portion that are connected to each other, the main body portion is arranged around the circumference of the light-emitting element, and the light-transmitting portion is arranged opposite to the light-emitting surface and spaced apart. The above-mentioned wearable device is provided with an isolating member to improve the light utilization efficiency of the wearable device and reduce the power consumption of the light-emitting element.

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] The binding layer has a glossy surface;

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

[0007] The isolating member comprises a main body portion and a light-transmitting portion which are connected to each other. The main body portion is arranged around the circumference of the light-emitting element, and the light-transmitting portion is arranged opposite to the light-emitting surface and spaced apart from each other.

[0008] In the above-mentioned wearable device, an isolation piece is arranged on the light-emitting element to form an air gap between the light-transmitting part and the light-emitting surface, and at least part of the light emitted by the light-emitting surface passes through the air, the light-transmitting part and the adhesive layer in sequence before emitting out of the adhesive layer. When the light emitted by the light-emitting surface enters the light-transmitting part from the air, it is emitted from the light-sparse medium into the light-dense medium. The light is not easy to be totally reflected at the interface between the light-transmitting part and the air, and the exit angle when the light is refracted at the interface between the light-transmitting part and the air is usually smaller than the incident angle, which can converge the light and is beneficial to reducing the incident angle when the light hits the light-emitting surface of the adhesive layer, thereby reducing the probability of total reflection of the light on the light-emitting surface of the adhesive layer, and increasing the probability of the light emitted by the light-emitting element emitting out of the adhesive layer, which is beneficial to improving the light utilization efficiency of the wearable device and reducing 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 the structure 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 optical path of light converged at the interface between the light-transmitting portion and the air in some embodiments.

[0013] Figure 4 FIG. 4 is a schematic diagram of a structure in which the first surface is a curved surface in some embodiments.

[0014] Figure 5 Schematic diagram of a structure in which a microstructure is provided on the first surface in some embodiments.

[0015] Figure 6 It is a cross-sectional schematic diagram of an inner side surface of the main body portion in some embodiments as a curved surface.

[0016] Figure 7 This is a schematic diagram of the structure in which the inner side surface is outside the maximum divergence angle range of the light-emitting element in some embodiments.

[0017] 10. Wearable device; 11. Light-emitting element; 111. Light-emitting surface; 12. Photoelectric sensor; 13. Glue layer; 131. Light-emitting surface; 14. Isolator; 141. Main body; 1411. Inner side; 142. Light-transmitting portion; 1421. First surface; 1422. Second surface; 15. Shell. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] In order to solve the above problems, the present application provides a wearable device.

[0026] See also Figure 1 , 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.

[0027] 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 11 can be set according to monitoring requirements, and are not limited in this application. The photoelectric sensor 12 can be any suitable sensor such as a photodiode. The light emitting element 11 can emit 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 can receive 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.

[0028] Furthermore, combined with Figure 1 and Figure 2 As shown, Figure 2 for Figure 1A partial enlarged schematic diagram of area A of the wearable device 10 is shown. In some embodiments, the wearable device 10 further includes a bonding layer 13 and an isolating member 14, the light-emitting element 11 and the isolating member 14 are disposed in the bonding layer 13, 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, and when the wearable device 10 is worn, the light-emitting surface 111 of the light-emitting element 11 can be oriented toward the user's fingers or wrist. The isolating member 14 is disposed on the light-emitting element 11, and is used to isolate the light-emitting element 11 from the bonding layer 13. The spacer 14 includes a main body 141 and a light-transmitting part 142 which are connected to each other. The main body 141 can be arranged around the circumference of the light-emitting element 11. The light-transmitting part 142 is arranged opposite to and spaced from the light-emitting surface 111. The insulating effect of the spacer 14 prevents the adhesive layer 13 from being injected between the light-transmitting part 142 and the light-emitting surface 111, so as to form an air gap between the light-transmitting part 142 and the light-emitting surface 111. In other words, the space between the light-transmitting part 142 and the light-emitting surface 111 is filled with air. The material of the adhesive layer 13 can be any suitable organic encapsulating glue. The adhesive layer 13 can be used as the packaging structure of the wearable device 10. After the light-emitting element 11, the spacer 14 and the photoelectric sensor 12 are assembled, the organic encapsulating glue can be injected into the wearable device 10 by vacuum glue filling to provide insulation protection for the light-emitting element 11, the photoelectric sensor 12 and other components. When the organic encapsulating glue solidifies, the adhesive layer 13 is formed. The adhesive layer 13 has a light emitting surface 131 disposed on the side of the light-transmitting portion 142 facing away from the light-emitting element 11. When the wearable device 10 is worn, the light emitting surface 131 faces the user's fingers or wrist, and at least part of the light emitted by the light-emitting surface 111 can pass through the air, the light-transmitting portion 142 and the adhesive layer 13 in sequence, and then be emitted from the light emitting surface 131 to the adhesive layer 13 and onto the user's vascular tissue.

[0029] Combination Figure 2 and Figure 3As shown, the wearable device 10 is provided with an isolator 14 on the light-emitting element 11 so that an air gap is formed between the light-transmitting portion 142 and the light-emitting surface 111. At least part of the light emitted by the light-emitting surface 111 passes through the air, the light-transmitting portion 142 and the adhesive layer 13 in sequence and then exits the adhesive layer 13. When the light emitted by the light-emitting surface 111 enters the light-transmitting portion 142 from the air, it is emitted from the light-sparse medium into the light-dense medium. It is not easy for the light to be totally reflected at the interface between the light-transmitting portion 142 and the air, and when the light is refracted at the interface between the light-transmitting portion 142 and the air, The angle of emission is usually smaller than the angle of incidence, that is, the setting of the light-transmitting portion 142 can play a role in converging light, which is beneficial to reducing the angle of incidence of light when it hits the light-emitting surface 131 of the adhesive layer 13, thereby reducing the probability that the angle of incidence of light on the light-emitting surface 131 is greater than the critical angle of total reflection, reducing the probability of total reflection of light on the light-emitting surface 131 of the adhesive layer 13, and increasing the probability of light emitted by the light-emitting element 11 emitting from the adhesive layer 13, thereby facilitating the improvement of the light utilization efficiency of the wearable device 10 and reducing the power consumption of the light-emitting element 11. In addition, due to the improvement of the 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 facilitating the reduction of the size of the wearable device 10. Furthermore, an isolation member 14 is provided inside the adhesive layer 13 to improve light utilization efficiency. The isolation member 14 is not likely to cause an uneven light-emitting surface 131 of the adhesive layer 13, nor will it increase the size and weight of the adhesive layer 13, which is beneficial to improving the wearing experience of the wearable device 10 and reducing the manufacturing cost of the wearable device 10.

[0030] refer to Figure 3 As shown, in some embodiments, the side of the light-transmitting portion 142 facing away from the light-emitting surface 111 is attached to the adhesive layer 13, and the adhesive layer 13 can cover the light-transmitting portion 142 and the surface of the main body 141 facing away from the light-emitting element 11, and the refractive index of the light-transmitting portion 142 is greater than the refractive index of air, and less than or equal to the refractive index of the adhesive layer 13. The refractive index of the light-transmitting portion 142 is between the air medium between the light-transmitting portion 142 and the light-emitting surface 111 and the adhesive layer 13, so that a smoothly transitioned refractive index gradient is formed between the air, the light-transmitting portion 142 and the adhesive layer 13, which is conducive to gathering and converging light, reducing the incident angle of light on the light-emitting surface 131, and thus reducing the probability of total reflection of light on the light-emitting surface 131.

[0031] It can be understood that when the refractive index of the light-transmitting portion 142 and the binding layer 13 is different, the light is emitted from the interface between the light-transmitting portion 142 and the binding layer 13 to the binding layer 13, which is from an optically sparse medium to an optically dense medium, which easily causes the light emission angle to be greater than the incident angle, which is not conducive to reducing the incident angle of the light on the light-emitting surface 131. The closer the refractive index of the light-transmitting portion 142 and the binding layer 13 is, the smaller the refraction angle of the light at the interface between the light-transmitting portion 142 and the binding layer 13 is, and the more conducive it is for the light-transmitting portion 142 to converge the light. In some embodiments, the refractive index of the light-transmitting portion 142 is equal to the refractive index of the adhesive layer 13, so that the exit angle of the light at the interface between the light-transmitting portion 142 and the adhesive layer 13 is approximately equal to the incident angle, and the convergence effect of the interface between the light-transmitting portion 142 and the air on the light can effectively reduce the incident angle of the light on the light-emitting surface 131, and increase the probability of the light emitting from the adhesive layer 13 from the light-emitting surface 131, thereby effectively improving the light utilization efficiency of the wearable device 10. In some embodiments, the material of the light-transmitting portion 142 can be a light-transmitting plastic or light-transmitting glass material with a refractive index approximately equal to that of the adhesive layer 13.

[0032] Combination Figure 2 and Figure 4 As shown, in some embodiments, the thickness of the middle part of the light-transmitting portion 142 is greater than the thickness of the edge part. For example, the thickness of the position of the light-transmitting portion 142 corresponding to the geometric center of the light-emitting surface 111 in the axial direction of the light-emitting element 11 is greater than the thickness of the edge part of the light-transmitting portion 142 in the axial direction of the light-emitting element 11. In other words, the shape of the light-transmitting portion 142 is a convex lens. Setting the light-transmitting portion 142 in a convex lens shape can enhance the convergence effect of the light-transmitting portion 142 on light. Combined with the convergence effect of the interface between the light-transmitting portion 142 and the air on light, the incident angle of the light on the light-emitting surface 131 when the light passes through the light-transmitting portion 142 and is emitted to the light-emitting surface 131 can be effectively reduced, thereby further increasing the probability of light emitting from the light-emitting surface 131 out of the adhesive layer 13, and improving the light utilization efficiency of the wearable device 10.

[0033] In some embodiments, the light-transmitting portion 142 has a first surface 1421 facing the light-emitting surface 111 and a second surface 1422 facing away from the light-emitting surface 111. The first surface 1421 is configured as a convex curved surface convex toward the light-emitting surface 111, and the second surface 1422 is configured as a plane. The shapes of the first surface 1421 and the second surface 1422 are matched so that the light-transmitting portion 142 forms a convex lens with a converging effect, which is beneficial to improving the converging effect of the light-transmitting portion 142 on light. At the same time, the curved surface is configured on the first surface 1421, so that the second surface 1422 does not convex toward the light-emitting surface 131, which is not likely to increase the thickness of the adhesive layer 13, and is also beneficial to reducing the size of the wearable device 10. In addition, it is also beneficial to prevent the light-emitting surface 131 from forming a bulge, which is beneficial to improving the user experience of the wearable device 10. Of course, there is no limit to the configuration of the light-transmitting portion 142 as a convex lens. For example, the first surface 1421 and the second surface 1422 can both be configured as convex curved surfaces convex to the light-emitting surface 111, and the radius of curvature of the first surface 1421 is smaller than the radius of curvature of the second surface 1422, which can also enable the light-transmitting portion 142 to form a convex lens structure. When at least one surface of the light-transmitting portion 142 is configured as a curved surface, the surface of the light-transmitting portion 142 can be a spherical surface or an aspherical surface, and the shapes of the first surface 1421 and the second surface 1422 can also have any other applicable configuration methods, for example, the first surface 1421 can be configured as a plane, and the second surface 1422 can be configured as a convex curved surface convex to the light-emitting surface 131. As long as the light-transmitting portion 142 can form a convex lens to enhance the light-transmitting portion 142's convergence effect on light, this will not be described in detail in this application.

[0034] Combination Figure 1 and Figure 5 As shown, in some embodiments, the first surface 1421 may also be provided with a microstructure capable of converging light, so as to enhance the converging effect of the light-transmitting portion 142 on the light, thereby reducing the incident angle of the light passing through the light-transmitting portion 142 on the light-emitting surface 131, and enhancing the probability of the light emitting from the adhesive layer 13 from the light-emitting surface 131. The light is converged by the microstructure, which is also conducive to compressing the thickness dimension of the light-transmitting portion 142 in the axial direction of the light-emitting element 11, thereby facilitating the compression of the size of the wearable device 10. In some embodiments, a Fresnel texture may be provided on the first surface 1421 to form a microstructure. The Fresnel texture occupies a small space and has a strong converging effect on light, thereby effectively reducing the size of the wearable device 10 while enhancing the converging effect of the light-transmitting portion 142. Of course, the microstructure provided on the first surface 1421 can also be any other applicable optical texture such as a diffraction texture, or the microstructure can also be provided on the second surface 1422. Of course, in some embodiments, corresponding microstructures can be provided on both the first surface 1421 and the second surface 1422, as long as the converging effect of the light-transmitting portion 142 on light can be enhanced.

[0035] Combination Figure 2 and Figure 6 As shown, in some embodiments, the material of the main body 141 can be any suitable material such as metal or plastic, and the main body 141 can be an optically transparent material or an opaque material. The main body 141 has sufficient structural strength to provide structural protection and isolation for the light-emitting element 11. The main body 141 has an inner side surface 1411 facing the light-emitting element 11, and the inner side surface 1411 is set as a reflective surface. For example, the main body 141 can be made of an opaque material, and the inner side surface 1411 of the main body 141 is coated or plated with a reflective film layer to form a reflective surface. In the present application, the reflective surface can be understood as a surface with a high reflectivity to the incident light. For example, a reflectivity of more than 70% to the incident light can be regarded as a reflective surface. Of course, according to different reflectivity requirements, the reflectivity of the reflective surface can also have different designs, for example, the reflectivity can be greater than 60%, 80%, and other values. The inner side surface 1411 is set as a reflective surface, so that at least part of the light emitted by the light-emitting element 11 and emitted to the inner side surface 1411 can be reflected once or multiple times to the first surface 1421 of the light-transmitting portion 142, or at least part of the light reflected from the first surface 1421 of the light-transmitting portion 142 to the inner side surface 1411 can be reflected back to the first surface 1421 of the light-transmitting portion 142, thereby increasing the probability that the light emitted by the light-emitting surface 111 is emitted to the adhesive layer 13 through the light-transmitting portion 142 and then emitted from the adhesive layer 13, thereby facilitating further improving the light utilization efficiency of the wearable device 10 and reducing the power consumption of the wearable device 10.

[0036] In some embodiments, the shape of the inner side surface 1411 is set to be a concave arc surface, and the inner side surface 1411 can be a concave arc surface set around the circumference of the light-emitting element 11, and the inner side surface 1411 as a whole can be a part of a spherical surface or a non-spherical surface. For example, in some embodiments, the distance between the end of the inner side surface 1411 connected to the light-transmitting portion 142 and the axis of the light-emitting element 11 is greater than the distance between the end of the inner side surface 1411 away from the light-transmitting portion 142 and the axis of the light-emitting element 11. When the inner side surface 1411 is a part of a spherical surface as a whole, in the direction from the light-transmitting portion 142 to the light-emitting surface 111 along the axis of the light-emitting element 11, the distance between the inner side surface 1411 and the axis of the light-emitting element 11 gradually decreases. Therefore, the shape of the inner side surface 1411 can cooperate with the design of setting the inner side surface 1411 as a reflective surface. When the inner side surface 1411 reflects light, the light can be deflected in the direction of the light-transmitting portion 142, thereby increasing the probability that the inner side surface 1411 reflects the light onto the light-emitting surface 131, thereby increasing the probability that the light emitted by the light-emitting element 11 exits the adhesive layer 13, and improving the light utilization efficiency of the wearable device 10. It should be noted that in the present application, the axis of the light-emitting element 11 can be the central axis of the light-emitting surface 111.

[0037] Of course, the shape of the inner side surface 1411 is not limited thereto. The inner side surface 1411 may also be a continuous arc surface arranged around the light-emitting element 11 and parallel to the axis of the light-emitting element 11, and the isolating member 14 may be roughly in the shape of a cylinder with one side open. The light-emitting element 11 may be roughly in the shape of a rectangular parallelepiped, and the inner side surface 1411 may also be composed of four surfaces respectively opposite to and parallel to the four side surfaces of the light-emitting element 11, and the isolating member 14 may be roughly in the shape of a rectangular parallelepiped with one side open. The shape of the isolating member 14 may also have any other suitable design, as long as it can isolate the light-emitting element 11 from the adhesive layer 13 to form an air gap between the light-transmitting portion 142 and the light-emitting surface 111.

[0038] Combination Figure 6 and Figure 7 As shown, when the inner side surface 1411 is set as a reflective surface and / or a concave arc surface, part of the inner side surface 1411 can be located within the maximum divergence angle range of the light-emitting element 11, that is, part of the light emitted by the light-emitting surface 111 can directly hit the inner side surface 1411 and be emitted toward the light-emitting surface 131 by the inner side surface 1411. In some embodiments, the main body 141 can also be located outside the maximum divergence angle range of the light-emitting element 11. In other words, the inner side surface 1411 is spaced apart from the side surface of the light-emitting element 11, and the inner side surface 1411 is located outside the maximum divergence angle range of the light-emitting element 11, and the light-transmitting portion 142 covers the maximum divergence angle range of the light-emitting element 11. Figure 7 The dashed line shown roughly illustrates the maximum divergence angle of the light emitting element 11 in some embodiments. With such a configuration, the light emitted by the light emitting surface 111 can be emitted to the light-transmitting portion 142 to the greatest extent, and then emitted from the light-emitting surface 131 through the light-transmitting portion 142 and the adhesive layer 13. The light emitted by the light emitting surface 111 will not directly hit the inner side surface 1411, which is beneficial to reduce the loss of light on the inner side surface 1411, further improve the light utilization efficiency of the wearable device 10, and reduce the power consumption of the wearable device 10. Of course, in Figure 7 In the described embodiment, when the inner side surface 1411 is outside the range of the maximum divergence angle of the light-emitting element 11, the inner side surface 1411 can also be set as a reflective surface, and can also be set as a concave arc surface, which can enhance the reflection effect of the inner side surface 1411 on the light reflected from the light-transmitting portion 142 to the inner side surface 1411, so that the light incident on the inner side surface 1411 can be reflected once or multiple times by the inner side surface 1411 and then be re-injected onto the light-transmitting portion 142, thereby improving the light utilization efficiency of the wearable device 10.

[0039] 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 light-emitting element 11 may be disposed on the inner surface of the housing 15, and the isolation member 14 may be covered on the light-emitting element 11. The isolation member 14 may be jointly enclosed with the inner surface of the housing 15 to form a housing space for the light-emitting element 11, so as to isolate the light-emitting element 11 from the adhesive layer 13. During the assembly process of the wearable device 10, after the light-emitting element 11 and the anti-isolator 14 are disposed on the inner surface of the housing 15, an organic encapsulation glue may be poured into one side of the inner surface of the housing 15. After the organic encapsulation glue solidifies, it forms a cover on the side of the isolation member 14 facing away from the light-emitting element 11.

[0040] In some embodiments, the refractive index of the adhesive layer 13 and the light-transmitting portion 142 are both set to 1.59, and the light output efficiency of the light emitted by the light-emitting element 11 on the light output surface 131 of the adhesive layer 13 is approximately 84.4%. 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 is provided with an isolation member 14, which can effectively improve the light utilization efficiency of the wearable device 10 and reduce the power consumption of the wearable device 10.

[0041] 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 1In 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 adhesive layer 13 can be roughly annular, and the plurality of light-emitting elements 11 are arranged in sequence and at intervals along the extension direction of the adhesive layer 13. The wearable device 10 also includes a plurality of photoelectric sensors 12, and 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, and each photoelectric sensor 12 is used to receive the 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 and 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 the 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.

[0042] 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.

[0043] 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 an isolator 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 isolator 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.

[0044] 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.

[0045] 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.

[0046] 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: The binding layer has a glossy surface; A light emitting element is disposed in the adhesive layer and has a light emitting surface disposed toward the light emitting surface; as well as, The isolating member comprises a main body portion and a light-transmitting portion which are connected to each other. The main body portion is arranged around the circumference of the light-emitting element, and the light-transmitting portion is arranged opposite to the light-emitting surface and spaced apart from each other.

2. The wearable device according to claim 1, characterized in that: The side of the light-transmitting portion facing away from the light-emitting surface is in contact with the adhesive layer, and the refractive index of the light-transmitting portion is greater than the refractive index of air and less than or equal to the refractive index of the adhesive layer.

3. The wearable device according to claim 1, characterized in that: The thickness of the middle portion of the light-transmitting portion is greater than the thickness of the edge portion.

4. The wearable device according to claim 3, characterized in that: The light-transmitting portion has a first surface facing the light-emitting surface and a second surface facing away from the light-emitting surface, the first surface is a convex arc surface convex toward the light-emitting surface, and the second surface is a plane.

5. The wearable device according to claim 1, characterized in that: The light-transmitting portion has a first surface facing the light-emitting surface and a second surface facing away from the light-emitting surface, and the first surface and / or the second surface are provided with a microstructure capable of converging light.

6. The wearable device according to claim 5, characterized in that: The microstructure includes a Fresnel texture.

7. The wearable device according to claim 1, characterized in that: The main body has an inner side surface facing the light emitting element, and the inner side surface is configured as a light reflecting surface.

8. The wearable device according to claim 1, characterized in that: The main body has an inner side surface facing the light emitting element, and the inner side surface is configured as a concave arc surface to reflect at least part of the light incident on the inner side surface toward the light transmitting portion.

9. The wearable device according to claim 8, characterized in that: The distance between one end of the inner side surface connected to the light-transmitting portion and the axis of the light-emitting element is greater than the distance between one end of the inner side surface away from the light-transmitting portion and the axis of the light-emitting element.

10. The wearable device according to claim 9, characterized in that: In a direction from the light-transmitting portion to the light-emitting surface along the axis of the light-emitting element, a distance between the inner side surface and the axis of the light-emitting element gradually decreases.

11. The wearable device according to claim 1, characterized in that: The main body is spaced apart from the side surface of the light emitting element.

12. The wearable device according to claim 11, characterized in that: The main body is located outside the maximum divergence angle range of the light emitting element.

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

14. The wearable device according to claim 1, characterized in that: There are multiple light-emitting elements, which are spaced apart and evenly distributed 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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