Wearable device

Abstract

The utility model relates to wearable equipment, which comprises a light emitting assembly, a first lens structure and a first spacing structure, and is characterized in that the light emitting assembly comprises a first light emitting element and a second light emitting element which are arranged side by side, and the first light emitting element and the second light emitting element have different light emitting colors; the first lens structure is arranged on the light emitting side of the light emitting assembly, the first lens structure comprises a first lens part opposite to the first light emitting element and a second lens part opposite to the second light emitting element, and the first spacing structure is arranged between the first lens part and the second lens part; the refractive index of the first spacing structure is smaller than that of the first lens structure. According to the design, the effectiveness of light emitted by the first light emitting element and light emitted by the second light emitting element is improved, and therefore the accuracy of the monitoring result of the wearable device can be effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic devices, and in particular to a wearable device. Background Art

[0002] At present, more and more wearable devices such as smart bracelets have the function of monitoring the user's physiological parameters, such as monitoring the user's heart rate, blood oxygen, etc. However, the existing wearable devices have the problem of poor accuracy of monitoring results when performing monitoring, which affects the user's experience. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a wearable device.

[0004] The present disclosure provides a wearable device, which includes a light emitting component, wherein the light emitting component includes a first light emitting element and a second light emitting element arranged side by side, and the first light emitting element and the second light emitting element have different luminous colors; a first lens structure, which is arranged on the light emitting side of the light emitting component, and the first lens structure includes a first lens portion opposite to the first light emitting element and a second lens portion opposite to the second light emitting element; a first spacing structure, which is arranged between the first lens portion and the second lens portion, and the refractive index of the first spacing structure is less than the refractive index of the first lens structure.

[0005] In some embodiments of the present disclosure, a first cavity is provided between the first lens portion and the second lens portion, and the first cavity constitutes the first spacing structure.

[0006] In some embodiments of the present disclosure, the first lens structure further includes a connecting portion connecting the first lens portion and the second lens portion.

[0007] In some embodiments of the present disclosure, the wearable device includes a shell, the light emitting component is arranged in the shell, a light emitting hole is arranged on the shell at a position corresponding to the light emitting component, the connecting part is installed on the light emitting hole, and the light emitting side opening of the light emitting hole is closed.

[0008] In some embodiments of the present disclosure, the wearable device also includes a second spacing structure surrounding the first lens portion and the second lens portion, and the refractive index of the second spacing structure is smaller than the refractive index of the first lens structure.

[0009] In some embodiments of the present disclosure, the second spacing structure is connected to the first spacing structure.

[0010] In some embodiments of the present disclosure, the first lens portion and the second lens portion are located in a light emitting hole of a shell of the wearable device, a second cavity is provided between the hole wall of the light emitting hole and the first lens portion and the second lens portion, and the second cavity constitutes the second spacing structure.

[0011] In some embodiments of the present disclosure, the wearable device also includes: a light receiver, which is used to receive light emitted by the first light emitting element and the second light emitting element; a second lens structure, which is arranged on the light incident side of the light receiver, and the second lens structure includes a third lens portion opposite to the light receiver; and a third spacing structure, which is arranged around the third lens portion, and the refractive index of the third spacing structure is less than the refractive index of the second lens structure.

[0012] In some embodiments of the present disclosure, the second lens structure also includes a mounting portion connected to the third lens portion, a light entrance hole is provided on the shell of the wearable device at a position corresponding to the light receiver, and the mounting portion is installed on the light entrance hole to close the light entrance side opening of the light entrance hole.

[0013] In some embodiments of the present disclosure, the first light emitting element is a red light emitting element, the second light emitting element is a green light emitting element, and the second light emitting element is disposed closer to the light receiver than the first light emitting element.

[0014] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0015] In the wearable device provided by the present disclosure, a first spacing structure is provided between a first lens portion opposite to the first light emitting element and a second lens portion opposite to the second light emitting element. Since the refractive index of the first spacing structure is less than the refractive index of the first lens structure, the light emitted by the first light emitting element forms a total reflection in the first lens portion, and the light emitted by the second light emitting element forms a total reflection in the second lens portion. In this way, the light emitted by the first light emitting element is prevented from entering the second lens portion, causing a waste of the light, and the light emitted by the second light emitting element is prevented from entering the first lens portion, causing a waste of the light, thereby improving the effectiveness of the light emitted by the first light emitting element and the light emitted by the second light emitting element, thereby effectively improving the accuracy of the monitoring results of the wearable device.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0018] Figure 1 is a light path simulation diagram of a wearable device in the related art when emitting red light;

[0019] Figure 2 It is a light path simulation diagram of a wearable device in the related art when emitting green light;

[0020] Figure 3 is a schematic structural diagram of a wearable device according to an exemplary embodiment;

[0021] Figure 4 yes Figure 3 Sectional view along AA direction;

[0022] Figure 5 is a light path simulation diagram of a wearable device when a first light emitting element emits light according to an exemplary embodiment;

[0023] Figure 6 is a light path simulation diagram of a wearable device when a second light emitting element emits light according to an exemplary embodiment;

[0024] Figure 7 is a schematic structural diagram of a wearable device according to another exemplary embodiment;

[0025] Figure 8 yes Figure 7 Cross-sectional view along the BB axis.

[0026] In the figure:

[0027] 1-light emitting assembly; 11-first light emitting element; 12-second light emitting element; 2-first lens structure; 21-first lens portion; 22-second lens portion; 23-first spacing structure; 24-second spacing structure; 25-connecting portion; 3-light receiver; 4-second lens structure; 41-third spacing structure; 42-third lens portion; 43-mounting portion; 5-housing; 51-light exit hole; 52-light entrance hole; 6-lens structure. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0029] At present, more and more wearable devices such as smart bracelets have the function of monitoring the user's physiological parameters, such as monitoring the user's heart rate, blood oxygen, etc. In the related art, when realizing the function of monitoring physiological parameters, photoplethysmography (PPG) is generally used, which is based on LED light source and detector, measures the attenuated light after reflection and absorption by human blood vessels and tissues, records the pulsation state of blood vessels and measures pulse waves to obtain corresponding physiological parameters.

[0030] Exemplarily, a photoelectric sensor and a signal processor are provided on the wearable device, and the photoelectric sensor is used to illuminate the skin surface and measure the amount of light passing through the skin. For example, the photoelectric sensor includes a light emitting component and a light receiver, the light emitting component is, for example, at least one light emitting diode, the light receiver is, for example, a photodiode, the light emitting diode can emit green light and red light and illuminate the skin, and the photodiode receives and measures the intensity of the light passing through the skin.

[0031] Blood causes changes in blood volume in the skin during heartbeats. When the heart contracts, blood is pushed into the arteries, causing the blood volume in the arteries to increase, thereby reducing the amount of light absorbed by the area. When the heart relaxes, blood flows back from the arteries, reducing the blood volume in the arteries and increasing the amount of light absorbed by the area. These changes can be captured by a photoelectric sensor on the surface of the skin, generating a light intensity signal that varies over time, namely a pulse waveform. The troughs and peaks in the signal correspond to the relaxation and contraction of the heart, and the pulse waveform is usually amplified and filtered to improve the signal-to-noise ratio. The corresponding physiological parameters are obtained based on the pulse waveform.

[0032] Taking the measurement of blood oxygen saturation as an example, the photoelectric sensor emits red light and infrared light, and the degree of absorption of red light and infrared light by hemoglobin in the blood depends on its oxygenation state. By comparing the absorption of red light and infrared light, the SpO2 (SPO2 refers to transcutaneous arterial oxygen saturation) level can be calculated to obtain the value of blood oxygen saturation, which is an important indicator of oxygen delivery to body tissues.

[0033] Exemplarily, in the related art, the light emitting component includes a first light emitting element for emitting red light and a second light emitting element for emitting green light, and a lens structure is provided on the light output side of the light emitting component. Generally, since red light has good permeability in skin tissue and can penetrate deep into the skin tissue, and the measurement of blood oxygen also needs to be in the deep tissue of the skin, the first light emitting element for emitting red light needs to maintain a relatively long distance from the light receiver to ensure the penetration depth of the red light. Green light is easily absorbed by tissue in the skin. If closer contact is required to obtain a clear signal, the second light emitting element for emitting green light needs to maintain a relatively close distance from the light receiver to reduce the loss of green light when penetrating the skin tissue.

[0034] However, when the first light emitting element and the second light emitting element emit light, Figure 1 In the optical path simulation diagram shown in FIG, part of the red light emitted by the first light emitting element 11 will irradiate the area on the lens structure 6 opposite to the second light emitting element 12, and then after being refracted by the lens structure 6, the optical path of this part of the red light will be shortened, reducing the penetration depth of this part of the red light, thereby causing the effective signal to be collected through this part of the red light, resulting in the waste of this part of the red light, and further resulting in the low effectiveness of the light emitted by the first light emitting element. Similarly, if Figure 2 As shown in the optical path simulation diagram, part of the green light emitted by the second light emitting element 12 will irradiate the area on the lens structure 6 opposite to the first light emitting element 11. After being refracted by the lens structure 6, the optical path of this part of the green light will be increased, and the penetration depth of this part of the green light will be improved, which will cause this part of the green light to be absorbed by the skin tissue and wasted, resulting in the waste of this part of the green light, which in turn leads to the low effectiveness of the light emitted by the second light emitting element, and ultimately causes the poor accuracy of the monitoring results of the wearable device, affecting the user experience.

[0035] Based on this, the relevant technology improves the effectiveness of light by increasing the number of light receivers and light emitting elements, adjusting the placement of the first light emitting element and the second light emitting element, or by optimizing the distance between the light receiver and the light emitting elements. However, increasing the number of light receivers and light emitting elements will not only be limited by the layout, but also lead to an increase in production costs. Adjusting the placement of the first light emitting element and the second light emitting element will increase the area occupied by the light emitting component of the wearable device, which will also lead to an increase in costs. The method of optimizing the distance between the light receiver and the light emitting elements is not universal, and the optimization effect is limited.

[0036] In order to solve the above technical problems, the present disclosure provides a wearable device, in which a first spacing structure is arranged between a first lens portion opposite to a first light emitting element and a second lens portion opposite to a second light emitting element. Since the refractive index of the first spacing structure is less than the refractive index of the first lens structure, the light emitted by the first light emitting element forms a total reflection in the first lens portion, and the second light emitting element forms a total reflection in the second lens portion. In this way, the light emitted by the first light emitting element is prevented from entering the second lens portion, causing a waste of the light, and the light emitted by the second light emitting element is prevented from entering the first lens portion, causing a waste of the light, thereby improving the effectiveness of the light emitted by the first light emitting element and the light emitted by the second light emitting element, thereby effectively improving the accuracy of the monitoring results of the wearable device.

[0037] An exemplary embodiment of the present disclosure provides a wearable device, such as Figure 3 and Figure 4 As shown, the wearable device includes a light emitting component 1, a first lens structure 2 and a first spacing structure 23. The light emitting component 1 includes a first light emitting element 11 and a second light emitting element 12 arranged side by side, and the first light emitting element 11 and the second light emitting element 12 have different luminous colors. Exemplarily, the light emitted by the first light emitting element 11 is a first color light, and the light emitted by the second light emitting element 12 is a second color light, which can be red light for the first color light and green light for the second color light; or the first color light can be green light and the second color light can be red light. The first lens structure 2 is arranged on the light emitting side of the light emitting component 1, and the light emitted by the first light emitting element 11 and the light emitted by the second light emitting element 12 are both reflected, refracted, etc. by the first lens structure 2 and then emitted to the skin.

[0038] The first lens structure 2 includes a first lens portion 21 opposite to the first light emitting element 11 and a second lens portion 22 opposite to the second light emitting element 12, and a first spacing structure 23 is disposed between the first lens portion 21 and the second lens portion 22. The refractive index of the first spacing structure 23 is smaller than the refractive index of the first lens structure 2. Figure 5 As shown in the light path simulation diagram, the first color light will be unable to enter the second lens portion 22 due to total reflection in the first lens portion 21; Figure 6In the light path simulation diagram shown in , the second color light will not be able to enter the first lens portion 21 due to total reflection in the second lens portion 22. In this way, under the action of the first spacing structure 23, the first color light is prevented from entering the second lens portion 22 to cause a waste of the first color light, and the second color light is prevented from entering the first lens portion 21 to cause a waste of the second color light, which effectively improves the effectiveness of the first color light and the second color light, so that the first color light and the second color light can more effectively enter the skin tissue to collect effective signals, thereby effectively improving the accuracy of the monitoring results of the wearable device and improving the user experience. It can be understood that total reflection refers to the phenomenon that when light is emitted from a dense medium (i.e., the light has a large refractive index in this medium) to the interface of a sparse medium (i.e., the light has a small refractive index in this medium), it is completely reflected back into the original medium.

[0039] In addition, the method of improving the light effectiveness by setting the first spacing structure 23 can effectively reduce the production cost compared to the method of increasing the number of emitting elements in the prior art, and the method of improving the light effectiveness by setting the first spacing structure 23 is more versatile, for example, it can be applied to medical equipment, optical equipment, detection equipment and other fields.

[0040] In one embodiment, the first spacing structure 23 includes a first gelatinous structure member, and the refractive index of the first gelatinous structure member is smaller than the refractive index of the first lens structure 2. In this way, the structure of the first spacing structure 23 is simple and easy to process.

[0041] like Figure 4 As shown, in one embodiment, there is a first cavity between the first lens portion 21 and the second lens portion 22, and the first cavity constitutes a first spacing structure 23. Exemplarily, a groove may be provided on the first lens structure 2, the groove constituting the first cavity, and the first lens portion 21 and the second lens portion 22 are formed under the separation of the groove. There is air in the first cavity, and since the refractive index of air is less than the refractive index of the first lens structure 2, for example, the refractive index of air is 1, and the refractive index of the first lens structure 2 is 1.5, the first cavity constitutes the first spacing structure 23, so as to form total reflection in the first lens portion 21 and the second lens portion 22. With such a setting form, the structure is simple, and it is convenient to set the first spacing structure 23, thereby effectively reducing the production cost. At the same time, it will not increase the weight and internal space inside the wearable device, which is conducive to the lightweight design of the wearable device.

[0042] In one embodiment, the first lens portion 21 and the second lens portion 22 are connected via a first spacing structure 23 , which not only improves the structural strength of the first lens structure 2 , but also facilitates the installation of the first lens structure 2 , thereby effectively improving the efficiency of assembly and disassembly of the first lens structure 2 .

[0043] Continue to refer Figure 4 In one embodiment, the first lens structure 2 further includes a connecting portion 25 connecting the first lens portion 21 and the second lens portion 22. Exemplarily, the first lens portion 21, the second lens portion 22 and the connecting portion 25 may be an integrally formed structure or may be a mutually independent split structure, and the first lens structure 2 is formed by bonding or the like. By providing the connecting portion 25, the first lens portion 21 and the second lens portion 22 are connected as one body while the structural strength of the first lens structure 2 can be effectively improved, thereby facilitating the installation of the first lens structure 2, and thereby effectively improving the efficiency of disassembly and assembly of the wearable device.

[0044] like Figure 3 and Figure 4 As shown, in one embodiment, the wearable device includes a housing 5, a light emitting component 1 is disposed in the housing 5, a light exit hole 51 is disposed on the housing 5 at a position corresponding to the light emitting component 1, and a connecting portion 25 is installed on the light exit hole 51, so that the first lens portion 21 and the second lens portion 22 are located between the connecting portion 25 and the light exit side of the light emitting component 1, the first lens portion 21 is opposite to the first light emission, and the second lens portion 22 is opposite to the second light emitting element 12. The connecting portion 25 closes the light exit side opening of the light exit hole 51. With such a design, on the one hand, the first color light and the second color light are both refracted by the first lens structure 2 and then emitted from the light exit hole 51, thereby effectively improving the comprehensiveness of the first lens structure 2 in processing the first color light and the second color light. On the other hand, the light-emitting side opening of the light-emitting hole 51 is closed by the connecting part 25, thereby improving the tightness of the connection between the connecting part 25 and the shell 5, which can not only effectively improve the stability of the setting of the first lens structure 2, thereby improving the reliability of the wearable device, but also prevent dust and other impurities from entering through the light-emitting hole 51 to affect the light-emitting effect of the light-emitting component 1, thereby improving the accuracy of the monitoring results of the wearable device.

[0045] like Figure 4 , Figure 7 and Figure 8 As shown, in one embodiment, the wearable device further includes a second spacing structure 24 surrounding the first lens portion 21 and the second lens portion 22, and the refractive index of the second spacing structure 24 is less than the refractive index of the first lens structure 2. With such a configuration, the first color light cannot be projected to the outside of the first lens portion 21 due to total reflection, and the second color light cannot be projected to the outside of the second lens portion 22 due to total reflection, thereby further improving the effectiveness of the first color light and the second color light.

[0046] like Figure 4 and 8As shown, in one embodiment, the second spacing structure 24 is connected to the first spacing structure 23. In this way, the first spacing structure 23 and the second spacing structure 24 can surround the outer periphery of the first lens portion 21, so that the first color light irradiated into the first lens portion 21 is completely confined in the first lens portion 21 due to total reflection, and is emitted from the light exit hole 51 through the connecting portion 25 after refraction. At the same time, the first spacing structure 23 and the second spacing structure 24 can also surround the outer periphery of the second lens portion 22, so that the second color light irradiated into the second lens portion 22 is completely confined in the second lens portion 22 due to total reflection, and is emitted from the light exit hole 51 through the connecting portion 25 after refraction. By connecting the second spacing structure 24 to the first spacing structure 23, the effectiveness of the first color light and the second color light can be further improved.

[0047] In one embodiment, the second spacing structure 24 includes a second colloid structure, and the refractive index of the second colloid structure is smaller than that of the second lens structure 4. For example, a layer of colloid is coated on the outer surface of the first lens portion 21 and the second lens portion 22, and the colloid is cured to form the second colloid structure. In this way, the structure of the second spacing structure 24 is simple and easy to process.

[0048] like Figure 4 As shown, in one embodiment, the first lens portion 21 and the second lens portion 22 are located in the light exit hole 51 of the housing 5 of the wearable device, and a second cavity is provided between the hole wall of the light exit hole 51 and the first lens portion 21 and the second lens portion 22, and the second cavity constitutes the second spacing structure 24. Exemplarily, there is air in the second cavity, and since the refractive index of air is less than the refractive index of the first lens structure 2, the second cavity constitutes the second spacing structure 24. With such a setting form, the structure is simple, and it is convenient to set the second spacing structure 24, thereby effectively reducing the production cost. At the same time, it will not increase the weight and internal space of the wearable device, which is conducive to the lightweight design of the wearable device.

[0049] Continue to refer Figure 4 In one embodiment, the wearable device further includes a light receiver 3, a second lens structure 4 and a third spacing structure 41. Exemplarily, the first light emitting element 11 emits a first color light, and the second light emitting element 12 emits a second color light. After the first color light and the second color light are emitted from the light exit hole 51, they are reflected and absorbed in human tissue and then received by the light receiver 3, and then the corresponding physiological parameters can be obtained according to the light received by the light receiver 3.

[0050] The second lens structure 4 is arranged on the light incident side of the light receiver 3, and the second lens structure 4 gathers the lights of different colors, so as to facilitate the reception of the light receiver 3, improve the effectiveness of the lights of different colors, and obtain more effective signals, thereby improving the accuracy of the monitoring results of the wearable device. The second lens structure 4 includes a third lens portion 42 opposite to the light receiver 3, and a third spacing structure 41 is arranged around the third lens portion 42. The refractive index of the third spacing structure 41 is less than the refractive index of the second lens structure 4, so that the light entering the third lens portion 42 cannot be emitted from the outside of the second lens structure 4 due to total reflection, thereby effectively improving the comprehensiveness of the light receiver 3 for the light entering the second lens structure 4, thereby further improving the effectiveness of the light.

[0051] In one embodiment, the third spacing structure 41 includes a third colloid structure, and the refractive index of the third colloid structure is smaller than that of the second lens structure 4. Exemplarily, a layer of colloid is coated on the outer surface of the third lens portion 42, and the colloid is cured to form the third colloid structure. In this way, the structure of the third spacing structure 41 is simple and easy to process.

[0052] In one embodiment, the second lens structure 4 is connected to the housing 5 via the third spacing structure 41, thereby fixing the second lens structure 4. Exemplarily, the third spacing structure 41 is a colloid structure, thereby bonding the second lens structure 4 to the housing 5. In this way, the convenience of installing the second lens structure 4 can be effectively improved.

[0053] Continue to refer Figure 4 In one embodiment, the second lens structure 4 further includes a mounting portion 43 connected to the third lens portion 42. For example, the third lens portion 42 and the mounting portion 43 may be an integrally formed structure or may be a separate structure independent of each other, and the second lens structure 4 is formed by bonding or the like. A light entry hole 52 is provided on the housing 5 of the wearable device at a position corresponding to the light receiver 3, and the mounting portion 43 is mounted on the light entry hole 52 so that the third lens portion 42 is located between the mounting portion 43 and the light entry side of the light receiver 3. The mounting portion 43 closes the light entry side opening of the light entry hole 52. With such a design, on the one hand, the comprehensiveness of the light receiver 3 receiving the light entering from the light entry hole 52 is improved, thereby further improving the effectiveness of the light. On the other hand, it not only effectively improves the tightness of the connection between the mounting portion 43 and the housing 5, thereby improving the stability of the second lens structure 4, further improving the reliability of the wearable device, but also prevents dust and other impurities from entering from the light entry hole 52 to affect the receiving effect of the light receiver 3, thereby further improving the accuracy of the monitoring results of the wearable device.

[0054] like Figure 4 and Figure 8As shown, in one embodiment, the first light emitting element 11 is a red light emitting element, and the second light emitting element 12 is a green light emitting element. Since red light has good permeability in skin tissue, it can penetrate deep into the skin tissue, and the measurement of blood oxygen also needs to be in the deep tissue of the skin; while green light is easily absorbed by the tissue in the skin. Based on this, in this embodiment, the second light emitting element 12 is arranged closer to the light receiver 3 than the first light emitting element 11, so that the optical path of the red light is extended and the optical path of the green light is shortened, thereby increasing the penetration depth of the red light while reducing the absorption of the green light by the skin tissue, thereby further improving the effectiveness of the red light and the green light.

[0055] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0056] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A wearable device, characterized in that: The wearable device comprises: A light emitting assembly, the light emitting assembly comprising a first light emitting element and a second light emitting element arranged side by side, the first light emitting element and the second light emitting element having different luminous colors; a first lens structure, the first lens structure being arranged at the light emitting side of the light emitting component, the first lens structure comprising a first lens portion opposite to the first light emitting element and a second lens portion opposite to the second light emitting element, A first spacing structure, wherein the first spacing structure is disposed between the first lens portion and the second lens portion, and a refractive index of the first spacing structure is smaller than a refractive index of the first lens structure.

2. The wearable device according to claim 1, characterized in that: A first cavity is defined between the first lens portion and the second lens portion, and the first cavity constitutes the first spacing structure.

3. The wearable device according to claim 2, characterized in that: The first lens structure further includes a connecting portion connecting the first lens portion and the second lens portion.

4. The wearable device according to claim 3, characterized in that: The wearable device includes a shell, the light emitting component is arranged in the shell, a light emitting hole is arranged on the shell at a position corresponding to the light emitting component, the connecting part is installed on the light emitting hole, and the light emitting side opening of the light emitting hole is closed.

5. The wearable device according to any one of claims 1 to 4, characterized in that: The wearable device also includes a second spacing structure surrounding the first lens portion and the second lens portion, and the refractive index of the second spacing structure is smaller than the refractive index of the first lens structure.

6. The wearable device according to claim 5, characterized in that: The second spacing structure is connected to the first spacing structure.

7. The wearable device according to claim 5, characterized in that: The first lens portion and the second lens portion are located in the light exit hole of the shell of the wearable device, and a second cavity is provided between the hole wall of the light exit hole and the first lens portion and the second lens portion, and the second cavity constitutes the second spacing structure.

8. The wearable device according to any one of claims 1 to 4, characterized in that: The wearable device further comprises: a light receiver, the light receiver being used to receive light emitted by the first light emitting element and the second light emitting element; a second lens structure, the second lens structure being disposed on a light incident side of the light receiver, the second lens structure comprising a third lens portion opposite to the light receiver; The third spacing structure is arranged around the third lens portion, and the refractive index of the third spacing structure is smaller than the refractive index of the second lens structure.

9. The wearable device according to claim 8, characterized in that: The second lens structure also includes a mounting portion connected to the third lens portion. A light entrance hole is provided on the shell of the wearable device at a position corresponding to the light receiver. The mounting portion is installed on the light entrance hole and closes the light entrance side opening of the light entrance hole.

10. The wearable device according to claim 8, characterized in that: The first light emitting element is a red light emitting element, the second light emitting element is a green light emitting element, and the second light emitting element is disposed closer to the light receiver than the first light emitting element.

Images