Intelligent glasses

Abstract

The embodiment of the invention provides a pair of intelligent glasses, which comprises a glasses frame and an antenna device, the antenna device comprises an antenna radiator, the antenna radiator is arranged at the edge of the glasses frame, the antenna radiator comprises a body, and a first branch knot and a second branch knot which extend out along the two ends of the body; a reference ground terminal; one end of the feed structure is connected with the body, and the other end of the feed structure is connected with the reference grounding end; wherein the first branch knot and the second branch knot have adjustable lengths and / or shapes, and the working bandwidth of the antenna device comprises a low-frequency band bandwidth and a high-frequency band bandwidth. According to the intelligent glasses provided by the invention, the antenna shape of the antenna device has good bendability, so that the antenna device can be well adapted to the structure of the glasses frame, and the space occupied by the antenna system in the intelligent glasses structure is reduced; the antenna is stable in structure, high-quality transmission of signals can be guaranteed, and radiation directionality of the antenna can be enhanced.

Description

Technical Field

[0001] This application relates to the field of antenna device technology, and more specifically, to a smart pair of glasses. Background Technology

[0002] Smart glasses are wearable devices that combine computer technology and intelligent functions. Typically presented in the form of eyeglasses, they integrate displays, cameras, sensors, computing power, and communication capabilities, providing users with a diverse and intelligent experience. Currently, smart glasses are widely used in fields such as healthcare, positioning and navigation, and entertainment.

[0003] As a crucial platform for VR (Virtual Reality) and AR (Augmented Reality) technologies, smart glasses require antennas to receive and process data from the external environment to achieve seamless integration with the real world. Therefore, the antenna system must possess efficient and stable data transmission capabilities to ensure a positive user experience. Summary of the Invention

[0004] This application provides a smart glasses solution that can at least partially solve the above-mentioned technical problems or other technical problems.

[0005] Some embodiments of this application provide a smart glasses, including a frame and an antenna device. The antenna device includes: an antenna radiator disposed on the edge of the frame, the antenna radiator including a body and a first branch and a second branch extending from both ends of the body; a reference ground terminal; and a feeding structure, one end of the feeding structure being connected to the body and the other end being connected to the reference ground terminal; wherein the first branch and the second branch have adjustable lengths and / or shapes, and the operating bandwidth of the antenna device includes a low-frequency bandwidth and a high-frequency bandwidth.

[0006] In some embodiments, the frame includes a front frame and a rear frame, with a clearance area between the front frame and the rear frame; the antenna radiator is disposed on the inner edge of the front frame, wherein the inner side of the front frame faces the rear frame.

[0007] In some embodiments, the front frame includes a left frame, a right frame, and a connecting portion connecting the left and right frames, with the antenna radiator being disposed wholly or partially on the inner edge of the right frame; or the antenna radiator being disposed wholly or partially on the inner edge of the left frame; or the antenna radiator being disposed simultaneously on the inner edge of the left frame, the connecting portion, and the inner edge of the right frame.

[0008] In some embodiments, the front frame further includes a right temple pivotally connected to the right frame and a left temple pivotally connected to the left frame. The main body is disposed on the right edge of the right frame near the right temple, and the first branch and the second branch extend from both ends of the main body and are disposed on the edge of the right frame, respectively. Alternatively, the main body is disposed on the left edge of the left frame near the left temple, and the first branch and the second branch extend from both ends of the main body and are disposed on the edge of the left frame, respectively.

[0009] In some embodiments, the main body is located at the connecting part, the first branch extends from the connecting part along the lower edge of the right frame, and the second branch extends from the connecting part along the lower edge of the left frame; or, the main body is located at the connecting part, the first branch extends from the connecting part along the upper edge of the right frame, and the second branch extends from the connecting part along the upper edge of the left frame.

[0010] In some implementations, the length of the first branch is 0.1λ. L1 ~0.2λ L1 The width is 0.01λ L1 ~0.022λ L1 The length of the second branch is 0.07λ. L1 ~0.12λ L1 The width is 0.01λ L1 ~0.03λ L1 ; where λ L1 The wavelength of the antenna device in free space at the low-frequency operating frequency is 1.57 GHz.

[0011] In some implementations, the low-frequency bandwidth is 1.47 GHz to 1.78 GHz; the high-frequency bandwidth includes a first high-frequency bandwidth and a second high-frequency bandwidth, the first high-frequency bandwidth is 2.2 GHz to 3.1 GHz, and the second high-frequency bandwidth is 4.6 GHz to 6.5 GHz.

[0012] In some implementations, the length of the first branch is 0.2λ. L2 ~0.34λ L2 The width is 0.01λ L2 ~0.022λ L2 The length of the second branch is 0.17λ. L2 ~0.3λ L2 The width is 0.01λ L2 ~0.022λ L2 ; where λ L2 The wavelength of the antenna device in free space at the low-frequency operating frequency is 1.7 GHz.

[0013] In some implementations, the low-frequency bandwidth is 1.57 GHz to 2.5 GHz, and the high-frequency bandwidth is 4.88 GHz to 6.4 GHz.

[0014] In some implementations, the antenna device employs a laser-guided antenna, a modified polyimide antenna, or a liquid crystal polymer antenna.

[0015] According to at least one embodiment of the present application, the smart glasses provide an antenna device inside the frame of the smart glasses, which can improve the isolation between the antenna device and metal components such as circuit boards at the temples, reduce the space occupied by the temples, reduce the difficulty of antenna design and manufacturing, and ensure that there is a certain distance between the antenna device and the human body, which is beneficial to ensure the performance of antenna bandwidth, impedance matching, efficiency and other properties.

[0016] The smart glasses provided according to at least one embodiment of this application have an antenna shape with good bendability, which allows them to adapt well to the structure of the frame, further reducing the space occupied by the antenna system in the smart glasses structure; and the antenna structure is stable, which can ensure high-quality signal transmission and can achieve antenna radiation in areas that conventional antennas cannot reach, thereby enhancing the radiation directionality of the antenna. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of smart glasses according to an exemplary embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the antenna device of the smart glasses according to Embodiment 1 of this application;

[0020] Figure 3 This is a schematic diagram of the reflection coefficient of the antenna device of the smart glasses according to Embodiment 1 of this application;

[0021] Figure 4 This is a schematic diagram of the overall efficiency of the antenna device of the smart glasses according to Embodiment 1 of this application;

[0022] Figure 5 This is a 3D radiation direction schematic diagram of the antenna device of the smart glasses according to Embodiment 1 of this application;

[0023] Figure 6 This is a schematic diagram of the antenna device of the smart glasses according to Embodiment 2 of this application;

[0024] Figure 7This is a schematic diagram of the reflection coefficient of the antenna device of the smart glasses according to Embodiment 2 of this application;

[0025] Figure 8 This is a schematic diagram of the overall efficiency of the antenna device of the smart glasses according to Embodiment 2 of this application;

[0026] Figure 9 This is a 3D radiation direction schematic diagram of the antenna device of the smart glasses according to Embodiment 2 of this application;

[0027] Figure 10 This is a schematic diagram of the structure of smart glasses according to Embodiment 3 of this application. Detailed Implementation

[0028] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features, especially not any order of precedence. Therefore, without departing from the teachings of this application, the first blurred image dataset discussed in this application may also be referred to as the second blurred image dataset, and the first loss function may also be referred to as the second loss function, and vice versa.

[0030] The terminology used herein is for the purpose of describing particular exemplary embodiments and is not intended to be limiting. When used in this specification, the terms “comprising,” “including,” “including,” and / or “comprising” indicate the presence of the stated features, integrals, elements, components, and / or combinations thereof, but do not exclude the presence of one or more other features, integrals, elements, components, and / or combinations thereof.

[0031] It should also be understood that expressions such as "comprising," "including," "having," "containing," and / or "comprising" are open-ended rather than closed-ended expressions in this specification, indicating the presence of the stated features, elements, and / or components, but not excluding the presence of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not just individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to examples or illustrations.

[0032] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms such as those defined in common dictionaries shall be interpreted as having the meaning consistent with their meaning in the context of the relevant field and shall not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0033] The present application will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0034] This application provides a smart glasses solution in some embodiments. Figure 1 A schematic diagram of the structure of a smart glasses 100 according to an exemplary embodiment of this application is shown.

[0035] like Figure 1 As shown, the smart glasses 100 may include lenses 10, a frame 20, and temples. Figure 1 (Not shown in the image). The lens 10 may include a left lens 11 and a right lens 12. The frame 20 may include a left frame 21 surrounding the left lens 11, a right frame 22 surrounding the right lens 12, and a connecting portion 23 connecting the left frame 21 and the right frame 22. Correspondingly, the temples may also include a left temple pivotally connected to the left frame 21 and a right temple pivotally connected to the right frame 22. Additionally, the smart glasses 100 may also include a circuit board, a chip, a sensor, a camera, an audio output module, and a battery module, etc.

[0036] refer to Figure 1 The smart glasses 100 includes an antenna device disposed on the edge of the frame 20 of the smart glasses 100. More specifically, the antenna device may be disposed on the inner edge of the frame 20. Taking the smart glasses as an example worn on a human head model or user's head, the inner edge refers to the side facing the human head model or user's head. The antenna device may include one or more antenna elements, such as... Figure 1 The number of antenna elements, such as antenna elements 101 and 102, is not specifically limited in this application.

[0037] In an exemplary embodiment, each antenna element of the antenna device may include an antenna radiator, a reference ground terminal, and a feed structure. The antenna radiator may include a main body and a first stub and a second stub extending from both ends of the main body. One end of the feed structure is connected to the main body, and the other end is connected to the reference ground terminal. The feed structure may be coupled to the circuit board of the smart glasses via wired or wireless means. The reference ground terminal may be connected to a ground point in the circuit board of the smart glasses.

[0038] In an exemplary embodiment, the first branch and the second branch have adjustable lengths and / or shapes.

[0039] In an exemplary embodiment, the first and second branches of the antenna radiator are bendable, which facilitates changing the shape of the antenna radiator to adapt to the structure of the frame, and can improve the connection stability and reliability between the antenna radiator and the frame.

[0040] In an exemplary embodiment, the first branch and the second branch have different lengths. Further, the first branch is longer than the second branch.

[0041] In an exemplary embodiment, the antenna radiator may be wholly or partially disposed on the left edge of the left frame 21. For example, the body of the antenna element 101 may be located on the left edge of the left frame 21 near the left temple. A first branch extends from the body along the left edge of the left frame 21, and a second branch extends from the body along the upper edge of the left frame 21. It should be understood that the first and second branches of the antenna element 101 may also extend along the inner left edge and lower edge of the left frame 21, respectively.

[0042] In an exemplary embodiment, the antenna radiator may be wholly or partially disposed on the right edge of the right frame 22. For example, the body of the antenna element 102 may be located on the right edge of the right frame 22 near the right temple. A first branch extends from the body along the right edge of the right frame 22, and a second branch extends from the body along the lower edge of the right frame 22. It should be understood that the first and second branches of the antenna element 102 may also extend along the inner right edge and upper edge of the right frame 22, respectively.

[0043] In an exemplary embodiment, the antenna radiator can be simultaneously disposed on the inner edge of the left frame 21, the connecting portion 23, and the inner edge of the right frame 22.

[0044] In an exemplary embodiment, the antenna radiator of the antenna device can be an LDS (Laser Directed Structure) antenna. LDS antennas utilize a laser direct forming technology, employing a numerically controlled laser to directly transfer circuit patterns onto the surface of components, and using the three-dimensional surface of the workpiece to form a circuit interconnection structure. Its core material is a modified plastic containing an organometallic compound. Under laser irradiation, this material releases metal particles, forming a 5-10 micrometer metal layer, thereby creating a metal antenna. LDS antennas can meet the communication and interaction requirements of antenna devices in devices such as smart glasses.

[0045] In an exemplary embodiment, the antenna radiator of the antenna device may be an MPI (Modified Polyimide) antenna. MPI antennas are high-performance antennas manufactured by modifying the formulation of traditional PI (polyimide) materials. MPI antennas possess excellent dielectric constant, moisture absorption, and low transmission loss, as well as good heat resistance and flexibility. They can operate stably in various environments, maintain stable signal transmission quality, and effectively meet the space utilization requirements of wearable devices such as smart glasses.

[0046] In an exemplary embodiment, the antenna radiator of the antenna device may be an LCP (Liquid Crystal Polymer) antenna. An LCP antenna is a novel type of antenna manufactured using liquid crystal polymer materials. LCP antennas offer advantages such as low loss, stable dielectric constant, and good sealing performance. They also possess excellent bendability, allowing for optimized utilization of internal and external space through bending or folding.

[0047] In an exemplary embodiment, the operating bandwidth of the antenna device may include at least a low-frequency band bandwidth and a high-frequency band bandwidth. Further, the operating bandwidth of the antenna device may cover the L1 band of GPS (Global Positioning System), the B1 band of BDS (BeiDou Satellite Navigation System), the 2.4GHz band and the 5GHz band of WIFI (Wireless Fidelity), etc.

[0048] In smart glasses based on known technology, the circuit board is typically located in one temple of the glasses, while the antenna system is positioned around it. This arrangement is limited by the size of the smart glasses themselves, resulting in a small antenna system size and limited clearance, leading to less than ideal bandwidth and radiation efficiency. Furthermore, the antenna system is close to some metal components, and in actual use, it is also close to the user, affecting performance such as bandwidth, impedance matching, and efficiency. Additionally, current smart glasses antenna systems typically use FPC (Flexible Printed Circuit) antennas, which are relatively thick and prone to warping due to uneven bonding surfaces, further degrading antenna performance.

[0049] Compared to the smart glasses of the known technologies described above, the smart glasses according to the exemplary embodiments of this application, by setting the antenna device inside the frame of the smart glasses, can, on the one hand, reduce the space occupied by circuit boards and other components at the temples, reduce the difficulty of antenna design and manufacturing, and ensure a certain distance between the antenna device and the human body, which is beneficial to ensuring the performance of antenna bandwidth, impedance matching, efficiency, etc.; on the other hand, by adopting LDS antenna, MPI antenna, or LCP antenna, the antenna structure is stable, which can ensure high-quality signal transmission, and the antenna shape has good bendability, which can adapt well to the structure of the frame, further reducing the space occupied by the antenna system in the structure of the smart glasses, and enabling antenna radiation in areas that conventional antennas cannot reach, thereby enhancing the antenna's radiation directionality.

[0050] Furthermore, according to the smart glasses of the exemplary embodiments of this application, the antenna radiator of the antenna device may include a first stub and a second stub. The parasitic coupling effect between the long and short stubs can generate additional resonant points (resonant frequencies), enabling the coverage of multiple frequency bands' operating bandwidth compared to a simple antenna structure. Moreover, the parasitic coupling effect between the first and second stubs also helps improve the radiation directivity in a specific area, thereby significantly improving the antenna's impedance matching and radiation performance, enabling the smart glasses to possess excellent communication capabilities and interactive performance.

[0051] The smart glasses and their antenna device according to the above embodiments will be described in further detail below with reference to specific examples.

[0052] Example 1

[0053] Figure 2 A schematic diagram of the antenna device of a smart glasses according to Embodiment 1 of this application is shown.

[0054] Combination Figure 2 As shown, the antenna device of this embodiment may include a first antenna element, which includes an antenna radiator, a feeding structure 91, and a reference ground terminal 813. The antenna radiator includes a body 81 and a first branch 811 and a second branch 812 extending from both ends of the body 81. The length of the first branch 811 is greater than that of the second branch 812.

[0055] In this embodiment, the antenna radiator of the first antenna element may be partially located on the inner edge of the right frame 22. Specifically, the first branch 811 may extend from the first end of the body 81 along a first direction and be disposed on the edge of the right frame 22, and the second branch 812 may extend from the second end of the body 81 along a second direction and be disposed on the edge of the right frame 22. In some exemplary embodiments, when the frame of the right frame 22 is a right-angled frame, the first direction may be, for example, a vertical direction, and the second direction may be, for example, a horizontal direction. Alternatively, in other exemplary embodiments, when the frame of the right frame 22 is an elliptical or circular frame, the first direction may be, for example, a clockwise direction, and the second direction may be, for example, a counter-clockwise direction.

[0056] For example, the main body 81 can be located on the right edge of the inner side of the right frame 22 near the right temple. A first branch 811 extends from one end (first end) of the main body 81 along the right edge of the right frame 22, and a second branch 812 extends from the other end (second end) of the main body 81 along the upper edge of the right frame 22. It should be understood that the first and second branches of the antenna radiator can also extend along the upper and right edges of the right frame 22, respectively; that is, the positions of the first and second branches can be interchanged. Furthermore, the antenna radiator of this first antenna element can also be located on the left edge of the left frame, which will not be elaborated further here.

[0057] In this embodiment, the antenna structure of the first antenna element is a monopole antenna. The first stub 811 and the second stub 812 constitute the long and short stubs of the antenna radiator. There is a parasitic coupling effect between the long and short stubs, which can generate additional resonant points.

[0058] As an exemplary implementation, the length of the first branch 811 ranges from 0.1λ. L1 ~0.2λ L1 The width is 0.01λ L1 ~0.022λ L1 The length of the second branch 812 is 0.07λ. L1 ~0.12λ L1 The width is 0.01λ L1 ~0.03λ L1 Wherein, λ L1 The low-frequency operating frequency is the wavelength of the antenna device in free space at the low-frequency operating frequency. In this embodiment, the low-frequency operating frequency is 1.57 GHz.

[0059] In some implementations, the length and / or shape of the antenna radiator can be adjusted by making slits, bending, or extending the antenna radiator.

[0060] In some implementations, the feed structure 91 is a discrete port, with one end connected to the reference ground terminal 813 and the other end connected to the body 81 of the antenna radiator.

[0061] In other embodiments, the power supply structure 91 may also adopt a coaxial power supply, a metal spring-type power supply, a metal pin-type power supply, or other similar structures.

[0062] Figure 3 This is a schematic diagram of the reflection coefficient of the antenna device in Example 1. The horizontal axis in the figure represents the operating frequency of the antenna device, and the vertical axis represents the reflection coefficient of the antenna device.

[0063] Depend on Figure 3 It can be seen that the parasitic coupling effect between the first stub 811 and the second stub 812 enables the antenna device to have three resonant frequencies: 1.57 GHz, 2.47 GHz, and 5.6 GHz (where 1.57 GHz is the low-frequency operating frequency). The operating bandwidths of the antenna device are 1.47 GHz to 1.78 GHz in the low-frequency band and 2.2 GHz to 3.1 GHz and 4.6 GHz to 6.5 GHz in the high-frequency band. These three operating bandwidths can satisfy GPS mode, BDS mode, and WIFI mode, etc.

[0064] Furthermore, from Figure 3 It can be seen that the amplitude of |S11| is less than -15dB in all three bandwidths mentioned above, indicating good impedance matching performance. The S11 parameter represents the return loss characteristic of the antenna device.

[0065] Continue to refer to Figure 4 , Figure 4 This is a schematic diagram of the overall efficiency of the antenna device in Example 1. Figure 4 The horizontal axis represents the operating frequency of the antenna device (in GHz), and the vertical axis represents the total efficiency of the antenna device. From... Figure 4 It can be seen that the overall efficiency of the antenna device in the above three working bandwidths is between 70% and 95%. Therefore, the antenna device in this embodiment has good radiation performance and can meet the application requirements of high-precision positioning and navigation.

[0066] Next, refer to Figure 5 , Figure 5This is a 3D radiation direction diagram of the antenna device in Embodiment 1. In the diagram, the darker the color, the stronger the antenna's radiation performance. Taking a frequency of 1.559GHz as an example, it can be seen that the main radiation direction of the antenna device in this embodiment is located directly in front of the right side of the smart glasses. Therefore, when the user wears the smart glasses for VR or AR experiences, the antenna device can accurately receive signals directly in front of the user's right hand and emit electromagnetic waves in front of the right hand, thereby enabling real-time information interaction with the game controller or control handle in the right hand and enhancing the gaming experience.

[0067] According to the antenna device of this embodiment, the resonant frequency of the antenna device can be adjusted by adjusting the length and / or shape of the first stub 811 and the second stub 812, realizing a multi-frequency antenna. This allows the smart glasses to cover multiple operating bandwidths, thereby enabling various operating modes such as GPS mode, BDS mode, and WIFI mode. In GPS and BDS modes, the smart glasses can achieve high-precision positioning and navigation; in WIFI mode, the smart glasses can have excellent communication capabilities and interactive performance.

[0068] Furthermore, according to the antenna device of this embodiment, the parasitic coupling effect between the first stub 811 and the second stub 812 can improve the directivity of the antenna, thereby significantly improving the impedance matching and radiation performance of the antenna, enabling the smart glasses to have excellent communication capabilities and interactive performance, thus enhancing the user experience.

[0069] Example 2

[0070] Figure 6 A schematic diagram of the antenna device of the smart glasses according to Embodiment 2 of this application is shown.

[0071] Combination Figure 6 As shown, the antenna device of this embodiment may include a second antenna unit, which includes an antenna radiator, a feed structure 92, and a reference ground terminal 823. The antenna radiator includes a body 82 and a first branch 821 and a second branch 822 extending from both ends of the body 82. The length of the first branch 821 is greater than that of the second branch 822.

[0072] In this embodiment, the antenna radiator of the second antenna unit can be simultaneously disposed on the inner edge of the left frame 11, the connecting part 23, and the inner edge of the right frame 12.

[0073] For example, the main body 82 may be located at the connecting portion 23 in the middle of the frame. The first branch 821 extends from the connecting portion 23 along the lower edge of the right frame 22, and the second branch 822 extends from the connecting portion 23 along the lower edge of the left frame 21. It should be understood that the first and second branches of the antenna radiator may also extend along the lower edges of the left frame 21 and the right frame 22, respectively; that is, the positions of the first and second branches may be interchanged. Alternatively, the first and second branches of the antenna radiator may also extend along the upper edges of the right frame 22 and the left frame 21, respectively, which will not be elaborated further here.

[0074] In this embodiment, the antenna structure of the second antenna element is a monopole antenna. The first stub 821 and the second stub 822 constitute the long and short stubs of the antenna radiator. There is a parasitic coupling effect between the long and short stubs, which can generate additional resonant points.

[0075] As an exemplary implementation, the length of the first branch 821 ranges from 0.2λ. L2 ~0.34λ L2 The width ranges from 0.01λ. L2 ~0.022λ L2 The length of the second branch 822 ranges from 0.17λ. L2 ~0.3λ L2 The width ranges from 0.01λ. L2 ~0.022λ L2 Wherein, λ L2 The low-frequency operating frequency is the wavelength of the antenna device in free space at the low-frequency operating frequency. In this embodiment, the low-frequency operating frequency is 1.7 GHz.

[0076] In some implementations, the length and / or shape of the antenna radiator can be adjusted by making slits, bending, or extending the antenna radiator.

[0077] In some implementations, the feed structure 92 is a discrete port, with one end connected to the reference ground terminal 823 and the other end connected to the body 82 of the antenna radiator.

[0078] In other embodiments, the power supply structure 92 may also adopt a coaxial power supply, a metal spring-type power supply, a metal pin-type power supply, or other similar structures.

[0079] Figure 7 This is a schematic diagram of the reflection coefficient of the antenna device in Example 2. The horizontal axis in the figure represents the operating frequency of the antenna device, and the vertical axis represents the reflection coefficient of the antenna device.

[0080] Depend on Figure 7It is known that the parasitic coupling effect between the first branch 821 and the second branch 822 enables the antenna device to have four resonant frequencies: 1.7GHz, 2.34GHz, 5.2GHz, and 6.2GHz (where 1.7GHz is the low-frequency operating frequency). The operating bandwidths of the antenna device are 1.57GHz to 2.5GHz in the low-frequency band and 4.88GHz to 6.4GHz in the high-frequency band. Furthermore, |S11| is less than -10dB in both operating bandwidths, indicating good impedance matching performance. The two operating bandwidths of the antenna device in this embodiment can satisfy GPS mode, BDS mode, and WIFI mode, enabling the applied smart glasses to achieve high-precision positioning and navigation, and possess excellent communication capabilities and interactive performance.

[0081] Figure 8 This is a schematic diagram showing the overall efficiency of the antenna device in Embodiment 2. From... Figure 8 It can be seen that the overall efficiency of the antenna device in the two working bandwidths mentioned above is between 70% and 90%. Therefore, the antenna device in this embodiment has good radiation performance and can meet the application requirements of high-precision positioning and navigation.

[0082] Continue to refer to Figure 9 , Figure 9 This is a 3D radiation direction diagram of the antenna device in Embodiment 2. In the diagram, the darker the color, the stronger the antenna's radiation performance. Taking a frequency of 1.559GHz as an example, it can be seen that the main radiation direction of the antenna device in this embodiment is located directly in front of the smart glasses. Therefore, when the smart glasses are worn on a human head model or on the user's head, the antenna device can accurately receive signals directly in front of the human body and emit electromagnetic waves in front, thereby achieving high-precision positioning, navigation, and information interaction.

[0083] According to the antenna device of this embodiment, the resonant frequency of the antenna device can be adjusted by adjusting the length and / or shape of the first stub 821 and the second stub 822, realizing a multi-frequency antenna. This allows the smart glasses applied to it to cover multiple operating bandwidths, thereby realizing multiple operating modes such as GPS mode, BDS mode, and WIFI mode. In GPS mode and BDS mode, the smart glasses can achieve high-precision positioning and navigation; in WIFI mode, the smart glasses can have excellent communication capabilities and interactive performance.

[0084] Furthermore, according to the antenna device of this embodiment, the parasitic coupling effect between the first stub 821 and the second stub 822 can improve the directivity of the antenna, thereby significantly improving the impedance matching and radiation performance of the antenna, enabling the smart glasses to have excellent communication capabilities and interactive performance, thus enhancing the user experience.

[0085] Example 3

[0086] Figure 10 A schematic diagram of the structure of smart glasses according to Embodiment 3 of this application is shown.

[0087] Combination Figure 10 As shown, the smart glasses in this embodiment may include a frame, lenses, and temples. The frame may include a front frame 2 and a rear frame 3, with a clearance area between the front frame 2 and the rear frame 3.

[0088] In an exemplary embodiment, the front frame 2 may include a left frame, a right frame, and a connecting portion connecting the left frame and the right frame; the lens may include a left lens 11 and a right lens 12; and the temples may include a left temple 41 and a right temple 42.

[0089] In this embodiment, the smart glasses also include an antenna device disposed on the inner edge of the front frame 2, wherein the inner edge of the front frame 2 refers to the side facing the rear frame 3. The antenna device may include an antenna radiator, a reference ground terminal, and a feeding structure. The antenna radiator includes a main body, and a first branch and a second branch extending from both ends of the main body. One end of the feeding structure is connected to the main body, and the other end is connected to the reference ground terminal. The first and second branches have adjustable lengths and / or shapes, and the operating bandwidth of the antenna device may include low-frequency bandwidth and high-frequency bandwidth.

[0090] In this embodiment, the smart glasses may also include a circuit board, an audio output module, a battery module, sensors, a camera, etc.

[0091] In an exemplary embodiment, the circuit board of the smart glasses may include a main board 52 and a sub-board 51. The main board 52 is the core control part of the smart glasses and may include components such as chips and shielding covers. The sub-board 51 may include an audio output module and control buttons, etc. Exemplarily, the main board 52 and the sub-board 51 may be respectively disposed on the right temple 42 and the left temple 41 or in a receiving cavity within the temple, and the main board 52 and the sub-board 51 may be connected via an FPC.

[0092] In an exemplary embodiment, the smart glasses may include a left speaker 61 and a right speaker 62 respectively disposed on the left temple 41 and the right temple 42. The left speaker 61 and the right speaker 62 can transmit sound by vibrating the user's earlobe and skull, providing an open listening experience.

[0093] In an exemplary embodiment, the smart glasses may include a battery module for powering the smart glasses. The battery module may include a first battery module 71 and a second battery module 72 respectively disposed at the left temple 41 and the right temple 42, enabling the smart glasses to achieve long-term standby time.

[0094] In an exemplary embodiment, the smart glasses may further include an interaction module that can interact with information related to VR or AR displays via an antenna device.

[0095] In an exemplary embodiment, the smart glasses may further include a positioning and navigation module that receives positioning and navigation information via an antenna device.

[0096] In this embodiment, the antenna device may include one or more of the first antenna element and the second antenna element described in Embodiments 1 and 2 above. For details regarding the structure and other features of the antenna device, please refer to the relevant descriptions in Embodiments 1 and 2 above, which will not be repeated here.

[0097] According to the smart glasses provided in this embodiment, the antenna device has a stable structure, which can ensure high-quality signal transmission. The antenna shape has good bendability, which can achieve antenna radiation in areas that conventional antennas cannot reach. This reduces the space occupied by the antenna system in the smart glasses, meeting the requirements of smart glasses devices for light weight and small size.

[0098] Furthermore, according to the smart glasses provided in this embodiment, the antenna device can generate additional resonant points by utilizing the parasitic coupling effect between long and short stubs, realizing a multi-frequency antenna. This allows the smart glasses to operate in multiple modes (GPS mode, BDS mode, WIFI mode, etc.), and the resonant frequency of the antenna system can be adjusted by adjusting the length and / or shape of the long and short stubs. This also enhances the working bandwidth, radiation efficiency, and other performance of the antenna system, enabling the smart glasses to achieve high-precision positioning and navigation, and possess excellent communication capabilities and interactive performance.

[0099] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept of this application. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A type of smart glasses, characterized in that, Includes a frame and an antenna device, the antenna device comprising: An antenna radiator is disposed on the edge of the frame. The antenna radiator includes a body and a first branch and a second branch extending from both ends of the body. Reference ground terminal; and A power supply structure, one end of which is connected to the main body and the other end of which is connected to the reference ground terminal; The first stub and the second stub have adjustable lengths and / or shapes, and the operating bandwidth of the antenna device includes low-frequency bandwidth and high-frequency bandwidth.

2. The smart glasses according to claim 1, wherein, The frame includes a front frame and a rear frame, with a clear area between the front frame and the rear frame; The antenna radiator is disposed on the inner edge of the front frame, wherein the inner side of the front frame is the side facing the rear frame.

3. The smart glasses according to claim 2, wherein, The front frame includes a left frame, a right frame, and a connecting portion that connects the left frame and the right frame. The antenna radiator is wholly or partially disposed on the inner edge of the right mirror frame; Alternatively, the antenna radiator may be wholly or partially located on the inner edge of the left mirror frame; Alternatively, the antenna radiator may be simultaneously located on the inner edge of the left frame, the connecting portion, and the inner edge of the right frame.

4. The smart glasses according to claim 3, wherein, The front frame also includes a right temple pivotally connected to the right frame and a left temple pivotally connected to the left frame. The main body is disposed on the right edge of the right frame near the right temple, and the first branch and the second branch extend from both ends of the main body and are disposed on the edge of the right frame. Alternatively, the main body is disposed on the left edge of the left frame near the left temple, and the first branch and the second branch extend from both ends of the main body and are disposed on the edge of the left frame.

5. The smart glasses according to claim 3, wherein, The main body is located at the connecting part, the first branch extends from the connecting part along the lower edge of the right frame, and the second branch extends from the connecting part along the lower edge of the left frame; Alternatively, the main body is located at the connecting portion, the first branch extends from the connecting portion along the upper edge of the right frame, and the second branch extends from the connecting portion along the upper edge of the left frame.

6. The smart glasses according to claim 4, wherein, The length of the first branch is 0.1λ L1 ~0.2λ L1 , and the width is 0.01λ L1 ~0.022λ L1 ; The length of the second branch is 0.07λ L1 ~0.12λ L1 The width of the second branch is 0.01λ L1 ~0.03λ L1 ; Where, λ L1 The wavelength of the antenna device in free space at the low-frequency operating frequency is 1.57 GHz.

7. The smart glasses according to claim 6, wherein, The low-frequency band bandwidth is 1.47 GHz to 1.78 GHz; The high-frequency bandwidth includes a first high-frequency bandwidth and a second high-frequency bandwidth, wherein the first high-frequency bandwidth is 2.2GHz to 3.1GHz and the second high-frequency bandwidth is 4.6GHz to 6.5GHz.

8. The smart glasses according to claim 5, wherein, The length of the first branch is 0.2λ. L2 ~0.34λ L2 The width is 0.01λ L2 ~0.022λ L2 ; The length of the second branch is 0.17λ. L2 ~0.3λ L2 The width is 0.01λ L2 ~0.022λ L2 ; Where, λ L2 The wavelength of the antenna device in free space at the low-frequency operating frequency is 1.7 GHz.

9. The smart glasses according to claim 8, wherein, The low-frequency band bandwidth is 1.57GHz to 2.5GHz, and the high-frequency band bandwidth is 4.88GHz to 6.4GHz.

10. The smart glasses according to any one of claims 1-9, wherein, The antenna device employs a laser-guided antenna, a modified polyimide antenna, or a liquid crystal polymer antenna.

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