Wearable device and method for enhancing optical signal by using same
By adopting multi-light sources and converging lens design in wearable devices, the problem of weak deep vascular reflection signals is solved, the optical signal is enhanced, and the accuracy and efficiency of physiological parameter monitoring are improved.
Patent Information
- Application Number
- CN202510591348.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2025-07-11
AI Technical Summary
In existing wearable devices, the deep vascular reflection signal received by the detector is weak, which affects the accuracy and efficiency of judging physiological parameters. It is difficult for traditional solutions to increase the intensity of the optical signal without increasing the device size and power consumption.
The multi-light source design and converging lens structure are adopted to emit light signals of different wavelengths through the first light transmitting channel and the second light transmitting channel, and the converging lens is used to converge the deep diffuse reflected light signals in the skin to the detector module to enhance the intensity of the light signal.
It significantly improves the intensity of the light signal received by the detector, improves the monitoring accuracy and efficiency of physiological parameters such as heart rate and blood oxygen saturation, and makes the monitoring data more accurate and reliable.
Smart Images
Figure CN120294994A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of optical technologies, and in particular, to a wearable device and a method for enhancing optical signals using the same. Background Art
[0002] With the popularization of wearable devices such as smart watches and bracelets, the combination of built-in green LEDs (wavelength about 530 nm) and red / infrared LEDs (wavelength about 660 nm / 940 nm) has become the core component for detecting indicators such as heart rate and blood oxygen saturation. Through the differential absorption characteristics of light signals with different wavelengths in skin tissues (green light detects the pulsation of superficial subcutaneous capillaries, and red / infrared light penetrates to deep blood vessels), combined with a photodetector receiving diffuse reflection signals, and then physiological parameters are obtained through photoplethysmography (PPG) analysis.
[0003] However, there are significant technical bottlenecks in the prior art: on the one hand, the reflection signals of deep blood vessels received by the detector are usually weak, affecting the judgment accuracy and efficiency of indicators; on the other hand, limited by the trend of device miniaturization, traditional solutions are difficult to increase the intensity of received optical signals by increasing the LED power. In this technical background, there is an urgent need for a solution that can effectively enhance the detection signal intensity through innovative design of the optical system without increasing the device volume or power consumption. Summary of the Invention
[0004] The present invention provides a wearable device and a method for enhancing optical signals using the same, which are used to solve the problems that the reflection signals of deep blood vessels received by the detector of existing wearable devices are usually weak, affecting the judgment accuracy and efficiency of indicators, and at the same time, limited by the trend of device miniaturization, traditional solutions are difficult to increase the intensity of received optical signals by increasing the LED power.
[0005] The present invention provides a wearable device, including: An optical enhancement component formed with a first light transmission channel and a second light transmission channel, both the first light transmission channel and the second light transmission channel being disposed opposite to the human skin; A light emitting module including a first light source and a second light source, the first light source and the second light source being opposite to the first light transmission channel, and the first light source and the second light source being used to emit light signals with different wavelengths toward the human skin through the first light transmission channel; A detector module opposite to the second light transmission channel; A converging lens disposed in the second light transmission channel, the converging lens being located between the human skin and the detector module, and the converging lens being used to receive the light signals diffusely reflected by the human skin and direct the light signals to converge to the detector module.
[0006] A wearable device provided according to the present invention, wherein the converging lens is a spherical lens or a Fresnel lens.
[0007] A wearable device provided according to the present invention, wherein the first light source is a green LED light source, the second light source is an infrared LED light source, and a plurality of the first light sources and the second light sources are provided. The plurality of first light sources and the second light sources are both opposite to the first light-transmitting channel along a ring shape.
[0008] A wearable device provided according to the present invention, wherein a plurality of second light-transmitting channels are provided, and a plurality of the converging lenses and the detector modules are respectively provided corresponding to the second light-transmitting channels; The plurality of second light-transmitting channels are located on the circumferential side of the first light-transmitting channel. Each second light-transmitting channel is provided with the converging lens therein, and each second light-transmitting channel is opposite to at least one of the detector modules.
[0009] A wearable device provided according to the present invention, wherein at least three of the first light sources and the second light sources are provided; At least three of the first light sources are arranged corresponding to the outer circle of the first light-transmitting channel, and at least three of the second light sources are arranged corresponding to the inner circle of the first light-transmitting channel.
[0010] A wearable device provided according to the present invention, wherein the first light-transmitting channel and the second light-transmitting channel are both cylindrical channels. The converging lens is sealed on the side of the second light-transmitting channel close to the human skin, and the detector module is correspondingly arranged on the side of the second light-transmitting channel away from the human skin; The first light source and the second light source are correspondingly arranged on the side of the first light-transmitting channel away from the human skin.
[0011] A wearable device provided according to the present invention, wherein the wearable device further includes: A base, arranged on the side of the optical enhancement member away from the human skin, and provided with a first installation groove and a second installation groove; the first installation groove is opposite to the first light-transmitting channel and is adapted to accommodate the first light source and the second light source; the second installation groove is opposite to the second light-transmitting channel and is adapted to accommodate the detector module.
[0012] A wearable device provided according to the present invention, wherein the converging lens is slidably and rotatably arranged in the second light-transmitting channel.
[0013] A wearable device provided according to the present invention, wherein the wearable device is one of a smart bracelet, a smart watch or a medical monitoring device.
[0014] The present invention also provides a method for optical signal enhancement of a wearable device, including: Adjust the position parameters of the converging lens relative to the X-axis, Y-axis, and Z-axis and the optical axis direction, so that the converging lens directs and converges the optical signal to the detector module; Based on the measured optical signal power value received by the detector module, correct the position parameters of the converging lens relative to the X-axis, Y-axis, and Z-axis and the optical axis direction to maximize the optical signal power.
[0015] The wearable device provided by the present invention sets a first light-transmitting channel and a second light-transmitting channel in the optical enhancement component, with the light-emitting module opposite to the first light-transmitting channel and the converging lens opposite to the second light-transmitting channel. This enables the first light source and the second light source in the light-emitting module to emit optical signals of different wavelengths towards the human skin through the first light-transmitting channel, while the converging lens can direct and converge the optical signal reflected diffusely by the deep blood vessels in the human skin to the detector module. This effectively solves the problem of weak reflected signals from deep blood vessels in the prior art, significantly enhancing the intensity of the optical signal received by the detector, thereby improving the accuracy and efficiency of monitoring physiological parameters such as heart rate and blood oxygen saturation, and making the monitoring data more accurate and reliable. Description of the Drawings
[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0017] Figure 1 It is a schematic diagram of the base and related components in the wearable device provided by the present invention.
[0018] Figure 2 It is the front view of the wearable device provided by the present invention.
[0019] Figure 3 It is a three-dimensional structural schematic diagram of the wearable device provided by the present invention without the converging lens installed.
[0020] Figure 4 It is a three-dimensional structural schematic diagram of the wearable device provided by the present invention with the converging lens installed.
[0021] Figure 5 It is the optical path schematic diagram provided by the present invention.
[0022] Figure 6 It is a schematic diagram of the detection result of the detector module when the wearable device provided by the present invention does not use the converging lens for optical enhancement.
[0023] Figure 7 It is a schematic diagram of the detection result of the detector module when the wearable device provided by the present invention uses a converging lens for optical enhancement.
[0024] Figure 8 It is a flowchart of optical signal enhancement of the wearable device provided by the present invention.
[0025] Reference numerals: 10. Optical enhancement member; 110. First light transmission channel; 120. Second light transmission channel; 20. First light source; 30. Second light source; 40. Detector module; 50. Converging lens; 60. Base; 610. First mounting groove; 620. Second mounting groove. Detailed implementation manners
[0026] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.
[0027] The following combines Figures 1-8 to describe the wearable device provided by the present invention and the method for optical signal enhancement using the same. The wearable device may be a smart watch, a smart bracelet, a medical monitoring device or other wearable devices that directly contact the human skin.
[0028] In an embodiment provided by the present invention, as Figures 1 to 5 shown, the wearable device includes: an optical enhancement member 10, a light emitting module, a detector module 40 and a converging lens 50. The optical enhancement member 10 is formed with a first light transmission channel 110 and a second light transmission channel 120, and both the first light transmission channel 110 and the second light transmission channel 120 are disposed opposite to the human skin to ensure that the optical signal can accurately enter and exit the human skin area. The light emitting module includes: a first light source 20 and a second light source 30. The first light source 20 and the second light source 30 are opposite to the first light transmission channel 110. The first light source 20 and the second light source 30 are used to emit optical signals with different wavelengths towards the human skin through the first light transmission channel 110. The optical signals with different wavelengths can penetrate different depths of the skin, and then interact with structures such as tissues and blood vessels under the skin, providing a rich and distinguishable information basis for subsequent detection. The detector module 40 is opposite to the second light transmission channel 120. The converging lens 50 is disposed in the second light transmission channel 120. The converging lens 50 is located between the human skin and the detector module 40. The converging lens 50 is used to receive the optical signal diffusely reflected by the human skin and direct the optical signal to the detector module 40.
[0029] During operation, as Figure 5 shown, when the optical signal emitted by the light-emitting module enters the human skin, after a series of complex optical processes such as scattering and reflection, a part of the optical signal will be diffusely reflected from the skin surface. The converging lens 50 can receive these diffusely reflected optical signals and, relying on its own optical characteristics, direct and converge the originally scattered and disordered optical signals, so that they are projected onto the detector module 40 in a more regular and concentrated manner. The converging lens 50 can significantly enhance the collected diffusely reflected optical signals, thereby increasing the intensity of the useful signals. After filtering out the interference light, the signal-to-noise ratio can also be improved. The intensity of the optical signals received by the detector module 40 is significantly increased, which in turn greatly improves the monitoring accuracy and efficiency of important physiological parameters such as heart rate and blood oxygen saturation calculated based on these optical signals. Finally, the monitoring data is made more accurate and reliable, providing a strong guarantee for the user's health monitoring. Whether it is for daily health tracking or auxiliary diagnosis in a medical scenario, it can provide a more valuable reference basis.
[0030] The wearable device provided by the present invention, by providing a first light-transmitting channel 110 and a second light-transmitting channel 120 in the optical enhancement member 10, with the light-emitting module opposite to the first light-transmitting channel 110 and the converging lens 50 opposite to the second light-transmitting channel 120, enables the first light source 20 and the second light source 30 in the light-emitting module to emit optical signals of different wavelengths towards the human skin through the first light-transmitting channel 110, while the converging lens 50 can direct and converge the optical signals diffusely reflected by the deep blood vessels in the human skin to the detector module 40. This effectively solves the problem of weak reflection signals of deep blood vessels in the prior art, significantly enhancing the intensity of the optical signals received by the detector, thereby improving the accuracy and efficiency of monitoring physiological parameters such as heart rate and blood oxygen saturation, and making the monitoring data more accurate and reliable.
[0031] It should be noted that the converging lens 50 is a spherical lens or a Fresnel lens. The spherical lens has good optical performance and can effectively collect and focus light. Its surface is spherical, and it can converge the optical signals diffusely reflected from the human skin, making the light more concentratedly irradiate on the detector module 40, thereby increasing the intensity and quality of the optical signals. The Fresnel lens, with its unique annular structure, greatly reduces the thickness and weight of the lens. At the same time, it also has excellent performance in light convergence. It can make the device thinner and lighter and easier to wear while ensuring the optical performance, and can also effectively converge the diffusely reflected optical signals to the detector module 40, enhancing the intensity of the optical signals received by the detector.
[0032] In a specific embodiment, the following results are simulated by ZEMAX non-sequential mode, as Figure 6As shown, in a certain configuration, when the lens is not used, the total power collected by the detector module 40 is 2.16×10-3W. As Figure 7 shown, when the lens has a focal length of 6.7775mm, a size radius of 2.5mm, an X position of 5.4mm, and is tilted -5° with respect to the Y axis, the total power collected by the detector reaches 2.54×10-3W. When the lens has a focal length of 6.2742mm, a size radius of 3mm, an X position of 5.8mm, and is tilted -10° with respect to the Y axis, the total power collected by the detector reaches 2.72×10-3W, an increase of approximately 25.93%. Among them, the X direction is parallel to the bottom plane and perpendicular to the light-emitting direction of the detector (outward), the Y direction is parallel to the bottom plane and orthogonal to the X direction (outward). The Z axis is the normal direction of the light source parallel to the bottom plane.
[0033] In some embodiments, as Figures 1 to 4 shown, the first light source 20 is a green LED light source, and the second light source 30 is an infrared LED light source. Both the green LED light source and the infrared LED light source are common light source types with different wavelength characteristics, which can meet the detection requirements for different types of physiological signals. A plurality of the first light sources 20 and the second light sources 30 are provided, and the plurality of first light sources 20 and the second light sources 30 are all arranged along a ring opposite to the first light-transmitting channel 110. Such a multi-light-source design can increase the intensity and coverage range of the optical signal. The annular arrangement of the first light sources 20 and the second light sources 30 can ensure that the optical signal irradiates the human skin evenly from multiple directions, thereby improving the acquisition efficiency and accuracy of the optical signal. This arrangement not only can expand the coverage area of the optical signal, but also can effectively reduce the signal blind area that may be caused by the single-direction emission of the light source, ensuring that the optical signals emitted from different angles can effectively interact with tissues such as blood vessels under the skin, and further improving the comprehensiveness and reliability of the monitoring data.
[0034] As Figures 1 to 4 shown, a plurality of second light-transmitting channels 120 are provided, and a plurality of converging lenses 50 and detector modules 40 are provided corresponding to the second light-transmitting channels 120. The plurality of second light-transmitting channels 120 are located on the periphery of the first light-transmitting channel 110. A converging lens 50 is provided in each second light-transmitting channel 120, and each second light-transmitting channel 120 is opposite to at least one detector module 40. Such a design layout enables the device to receive the optical signals diffusely reflected from the human skin from multiple angles. The plurality of converging lenses 50 can converge the diffusely reflected optical signals in different directions, ensuring that each detector module 40 can receive optical signals with sufficient intensity. This multi-channel and multi-detector design not only improves the acquisition efficiency of the optical signal, but also enhances the stability and reliability of the signal, avoiding problems such as signal loss or interference that may occur in a single channel or a single detector.
[0035] Taking a wearable bracelet as an example, at least three of the first light sources 20 and the second light sources 30 are provided; at least three of the first light sources 20 are arranged corresponding to the outer circle of the first light-transmitting channel 110, and at least three of the second light sources 30 are arranged corresponding to the inner circle of the first light-transmitting channel 110.
[0036] As Figure 1 and Figure 2 shown, the three small rectangular modules in the middle are green LED light sources; the three small rectangles in the innermost circle are infrared LED light sources. The six rectangles on the periphery are detector modules 40, covering the ranges of green light and infrared light. The light emitted by the LED enters the detector module 40 after diffuse reflection at different depths of the skin and subcutaneous tissue and becomes the received signal.
[0037] It should be noted that according to different practical scenarios and detection parts of the wearable device, the first light source 20, the second light source 30 and the detector module 40 of the device can have various configuration methods. For example, in the scenario of detecting heart rate, the number of green LED light sources can be increased to improve the detection sensitivity to blood flow changes; in the scenario of detecting blood oxygen saturation, the number of infrared LED light sources can be increased to improve the detection accuracy of blood oxygen content. Correspondingly, the optical parameters such as the type, shape, focal length, and size of the converging lens 50 can all be designed for matching. For example, in the case of a shallower detection part, a converging lens 50 with a shorter focal length can be used to improve the converging effect on the signals of superficial blood vessels; in the case of a deeper detection part, a converging lens 50 with a longer focal length can be used to improve the converging effect on the signals of deep blood vessels. In addition, the spectral response range of the detector module 40 can also be adjusted according to the actual detection requirements to ensure that different wavelength optical signals can be accurately received and processed.
[0038] In some embodiments, as Figures 1 to 4 shown, both the first light-transmitting channel 110 and the second light-transmitting channel 120 are cylindrical channels. The converging lens 50 is sealed on the side of the second light-transmitting channel 120 close to the human skin, while the detector module 40 is arranged on the side of the second light-transmitting channel 120 away from the human skin. This layout enables the converging lens 50 to first receive the optical signal reflected diffusely from the human skin and converge it, so that the optical signal can be more concentratedly projected onto the detector module 40. This setting of the converging lens 50 not only increases the intensity of the optical signal but also improves the quality of the optical signal received by the detector module 40 by reducing the divergence of the optical signal. The first light source 20 and the second light source 30 are correspondingly arranged on the side of the first light-transmitting channel 110 away from the human skin. It can ensure that the optical signal emitted by the light source can be efficiently transmitted through the first light-transmitting channel 110 to the human skin, while reducing the direct contact of the light source with the human skin and improving the wearing comfort.
[0039] The converging lens 50 can be coated with an anti-reflection film according to the LED wavelength used to further enhance the intensity of the useful optical signal, while reducing stray light interference and improving the signal-to-noise ratio. The anti-reflection film is an optical thin film that can effectively reduce the reflection loss of the optical signal on the lens surface and improve the transmittance of the optical signal. By designing the anti-reflection film for a specific wavelength LED light source, the intensity of the optical signals of these wavelengths can be significantly enhanced, thereby improving the quality of the optical signals received by the detector module 40. In addition, the anti-reflection film can also reduce the interference of stray light and improve the signal-to-noise ratio, making the monitoring data more accurate and reliable.
[0040] In some embodiments, such as Figure 1 and Figure 2 shown, the wearable device further includes: a base 60. The base 60 plays an important role in supporting and integrating structurally, providing a stable mounting platform for each optical component, thereby ensuring the reliability and durability of the device. The base 60 is disposed on the side of the optical enhancement member 10 away from the human skin, and the base 60 is provided with a first mounting groove 610 and a second mounting groove 620.
[0041] The first mounting groove 610 is opposite to the first light-transmitting channel 110 and is suitable for accommodating the first light source 20 and the second light source 30, such that the light source can be accurately aligned with the first light-transmitting channel 110, ensuring that the optical signal can be efficiently transmitted through the light-transmitting channel to the human skin. At the same time, the first mounting groove 610 provides physical protection for the light source, reducing the impact of external shocks and vibrations on the light source, and improving the service life and stability of the light source.
[0042] The second mounting groove 620 is opposite to the second light-transmitting channel 120 and is suitable for accommodating the detector module 40. The detector module 40 can be accurately aligned with the second light-transmitting channel 120 in the second mounting groove 620, ensuring that the optical signal diffusely reflected from the human skin can be accurately received by the detector module 40. In addition, the design of the second mounting groove 620 also helps to protect the detector module 40 from the influence of the external environment, such as sweat, dust, etc., thereby ensuring the normal operation of the detector module 40 and the accuracy of the data.
[0043] The design of the base 60 can also include some additional functions, such as a heat dissipation structure, to help the light source and the detector module 40 maintain stable performance during long-term operation.
[0044] Based on the above embodiments, in some embodiments, such as Figures 1 to 4As shown, to facilitate the adjustment of the converging lens 50 so that the converging lens 50 directs and converges the optical signal to the detector module 40; the converging lens 50 is slidably and rotatably arranged in the second light transmission channel 120. This adjustable design allows for flexible adjustment of the position and angle of the converging lens 50 according to the actual optical signal conditions and the specific needs of the user during the use of the device. By sliding adjustment, the position of the converging lens 50 in the second light transmission channel 120 can be changed, thereby optimizing the focal length and enabling the optical signal to be more accurately converged onto the detector module 40. At the same time, rotational adjustment can change the angle of the converging lens 50 to adapt to optical signals in different directions, ensuring that the optical signal can be efficiently received by the detector module 40.
[0045] This adjustment mechanism not only improves the flexibility and adaptability of the device but also significantly enhances the accuracy and reliability of the monitoring data. By precisely adjusting the position and angle of the converging lens 50, the loss and scattering of the optical signal can be minimized, the intensity and quality of the optical signal can be improved, and thus the signal-to-noise ratio of the optical signal received by the detector module 40 can be enhanced.
[0046] It should be noted that the wearable device is one of a smart bracelet, a smart watch, or a medical monitoring device. These devices play important roles in different application scenarios. For example, smart bracelets and smart watches are suitable for daily health monitoring, while medical monitoring devices are suitable for more professional medical environments. Through flexible configuration and design, these devices can meet the needs of different users and provide comprehensive support for health management.
[0047] The embodiment of the present invention also provides a method for enhancing an optical signal using a wearable device, as Figure 8 shown, including the following steps: Step S810: Adjust the position parameters of the converging lens relative to the X-axis, Y-axis, and Z-axis and the optical axis direction so that the converging lens directs and converges the optical signal to the detector module.
[0048] In actual operation, by precisely adjusting the position of the converging lens in three axial directions and the direction of the optical axis, the converging path of the optical signal can be optimized to make it as concentrated as possible on the receiving surface of the detector module, thereby improving the intensity and quality of the optical signal. Such an adjustment mechanism lays a good foundation for subsequent signal processing and analysis and helps to enhance the accuracy and reliability of the monitoring data.
[0049] Step S820: By actually measuring the optical signal power value received by the detector module, correct the position parameters of the converging lens in the X-axis, Y-axis, and Z-axis and the optical axis direction to maximize the optical signal power.
[0050] After completing the initial adjustment of the position and orientation of the converging lens, it is necessary to verify and optimize the adjustment effect. This step is to evaluate whether the current setting of the converging lens is appropriate by actually measuring the power value of the optical signal received by the detector module. According to the measured results, the position and optical axis direction of the converging lens are finely adjusted to gradually increase the power of the optical signal. This process may need to be iterated repeatedly until the power of the optical signal received by the detector module reaches the maximum value. In this way, it can be ensured that the setting of the converging lens reaches the optimal state, thereby realizing the efficient convergence and enhancement of the optical signal, providing a strong guarantee for further improving the accuracy and efficiency of physiological parameter monitoring.
[0051] The method for enhancing optical signals provided by the wearable device of the present invention effectively enhances the intensity of the optical signals received by the detector module, thereby improving the performance of the wearable device when monitoring physiological parameters such as heart rate and blood oxygen saturation, enabling it to provide more accurate and reliable monitoring data to meet the needs of users in daily health monitoring and medical scenarios.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A wearable device, characterized in that, Comprising: An optical enhancement component formed with a first light transmission channel and a second light transmission channel, both the first light transmission channel and the second light transmission channel being disposed opposite to the human skin; A light emitting module including a first light source and a second light source, the first light source and the second light source being opposite to the first light transmission channel, the first light source and the second light source being configured to emit optical signals of different wavelengths toward the human skin through the first light transmission channel; A detector module opposite to the second light transmission channel; A converging lens disposed in the second light transmission channel, the converging lens being located between the human skin and the detector module, the converging lens being configured to receive the optical signal diffusely reflected by the human skin and direct the optical signal to converge to the detector module.
2. The wearable device according to claim 1, wherein, The converging lens is a spherical lens or a Fresnel lens.
3. The wearable device according to claim 1, characterized in that, The first light source is a green LED light source, the second light source is an infrared LED light source, a plurality of the first light sources and a plurality of the second light sources are provided, and the plurality of the first light sources and the plurality of the second light sources are all opposite to the first light transmission channel along a ring shape.
4. The wearable device according to claim 3, characterized in that, A plurality of the second light transmission channels are provided, and a plurality of the converging lenses and a plurality of the detector modules are respectively provided corresponding to the second light transmission channels; The plurality of the second light transmission channels are located on the circumferential side of the first light transmission channel, the converging lens is disposed in each of the second light transmission channels, and each of the second light transmission channels is opposite to at least one of the detector modules.
5. The wearable device according to claim 3, wherein, At least three of the first light sources and at least three of the second light sources are provided; At least three of the first light sources are disposed corresponding to the outer circle of the first light transmission channel, and at least three of the second light sources are disposed corresponding to the inner circle of the first light transmission channel.
6. The wearable device according to claim 1, wherein Both the first light transmission channel and the second light transmission channel are cylindrical channels, the converging lens is sealed on the side of the second light transmission channel close to the human skin, and the detector module is correspondingly disposed on the side of the second light transmission channel away from the human skin; The first light source and the second light source are correspondingly disposed on the side of the first light transmission channel away from the human skin.
7. The wearable device according to claim 1, characterized in that, The wearable device further includes: A base disposed on the side of the optical enhancement component away from the human skin, having a first installation groove and a second installation groove; the first installation groove is opposite to the first light transmission channel and is adapted to accommodate the first light source and the second light source; the second installation groove is opposite to the second light transmission channel and is adapted to accommodate the detector module.
8. The wearable device according to any one of claims 1-7, characterized in that, The converging lens is slidably and rotatably disposed in the second light transmission channel.
9. The wearable device according to any one of claims 1-7, characterized in that, The wearable device is one of a smart bracelet, a smart watch or a medical monitoring device.
10. A method for enhancing an optical signal by using the wearable device according to any one of claims 1-9, including: Adjusting the position parameters and the optical axis direction of the converging lens with respect to the X-axis, Y-axis and Z-axis, so that the converging lens directs the optical signal to converge to the detector module; By measuring the optical signal power value received by the detector module, correcting the position parameters and the optical axis direction of the converging lens with respect to the X-axis, Y-axis and Z-axis to maximize the optical signal power.