Intelligent glasses

Abstract

The embodiment of the utility model 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] The present application relates to the technical field of antenna devices, and in particular, to smart glasses. Background Art

[0002] Smart glasses are wearable devices that combine computer technology and intelligent functions. Typically presented as glasses, they integrate displays, cameras, sensors, computing power, communications, and other functions to provide users with a diverse, intelligent experience. Currently, smart glasses are widely used in healthcare, positioning and navigation, entertainment, and other fields.

[0003] Smart glasses, as a key enabler of VR (Virtual Reality) and AR (Augmented Reality) technologies, rely on 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. Utility Model Content

[0004] The present application provides a smart glasses that can at least partially solve the above technical problems or other technical problems.

[0005] Some embodiments of the present application provide a pair of smart glasses, including a frame and an antenna device, the antenna device including: an antenna radiator, which is arranged at the edge of the frame, the antenna radiator including a main body, and a first branch and a second branch extending from both ends of the main body; a reference ground terminal; and a feeding structure, one end of the feeding structure is connected to the main body, and the other end is connected to the reference ground terminal; wherein the first branch and the second branch have adjustable length and / or shape, and the operating bandwidth of the antenna device includes a low-frequency band bandwidth and a high-frequency band 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 arranged at the inner edge of the front frame, wherein the inner side of the front frame is the side facing the rear frame.

[0007] In some embodiments, the front frame includes a left frame, a right frame, and a connecting portion connecting the left frame and the right frame, and the antenna radiator is entirely or partially disposed on the inner edge of the right frame; or the antenna radiator is entirely or partially disposed on the inner edge of the left frame; or the antenna radiator is simultaneously disposed 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 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 arranged on the right edge of the right frame near the right temple, and the first branch and the second branch are respectively extended from the two ends of the main body and arranged at the edge of the right frame; or, the main body is arranged on the left edge of the left frame near the left temple, and the first branch and the second branch are respectively extended from the two ends of the main body and arranged at the edge of the left frame.

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

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

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

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

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

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

[0015] According to the smart glasses provided by at least one embodiment of the present application, by arranging the antenna device on the inside of the frame of the smart glasses, the isolation from metal devices such as circuit boards at the temples can be improved, the space occupied by the temples can be reduced, the difficulty of antenna design and processing can be reduced, and a certain distance can be maintained between the antenna device and the human body, which is conducive to ensuring the antenna bandwidth, impedance matching, efficiency and other performance.

[0016] According to the smart glasses provided in at least one embodiment of the present application, the antenna shape of the antenna device has good bendability, so that it can 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 realize antenna radiation in some areas that conventional antennas cannot reach, thereby enhancing the radiation directionality of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0019] Figure 2 1 is a schematic structural diagram of an antenna device of smart glasses according to the first embodiment of the present application;

[0020] Figure 3 is a schematic diagram of the reflection coefficient of the antenna device of the smart glasses according to the first embodiment of the present application;

[0021] Figure 4 is a schematic diagram of the total efficiency of the antenna device of the smart glasses according to the first embodiment of the present application;

[0022] Figure 5 3D radiation direction diagram of the antenna device of the smart glasses according to the first embodiment of the present application;

[0023] Figure 6 is a structural diagram of an antenna device of smart glasses according to the second embodiment of the present application;

[0024] Figure 7is a schematic diagram of the reflection coefficient of the antenna device of the smart glasses according to the second embodiment of the present application;

[0025] Figure 8 is a schematic diagram of the total efficiency of the antenna device of the smart glasses according to the second embodiment of the present application;

[0026] Figure 9 3D radiation direction diagram of the antenna device of the smart glasses according to the second embodiment of the present application;

[0027] Figure 10 3 is a schematic structural diagram of the smart glasses according to the third embodiment of the present application. DETAILED DESCRIPTION

[0028] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present 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 feature region, and do not represent any limitation on the features, and in particular, do not represent 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 terms used herein are for the purpose of describing particular exemplary embodiments and are not intended to be limiting. When used in this specification, the terms "comprise," "comprising," "include," and / or "comprising" indicate the presence of the stated features, integers, elements, parts, and / or combinations thereof, but do not exclude the presence of one or more other features, integers, elements, parts, and / or combinations thereof.

[0031] It should also be understood that expressions such as "comprises," "including," "having," "includes," and / or "comprising" are open rather than closed expressions in this specification, indicating the presence of the stated features, elements, and / or components, but do not exclude the presence of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than just the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

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

[0033] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0034] Some embodiments of the present application provide a pair of smart glasses. Figure 1 1 shows a schematic structural diagram of smart glasses 100 according to an exemplary embodiment of the present application.

[0035] like Figure 1 As shown, the smart glasses 100 may include lenses 10, a frame 20, and temples ( Figure 1 (not shown). The lenses 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 and right frames 21 and 22. Accordingly, 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. Furthermore, the smart glasses 100 may further include a circuit board, a chip, a sensor, a camera, an audio output module, a battery module, and the like.

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

[0037] In an exemplary embodiment, each antenna unit 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 first and second branches extending from opposite 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 a wired or wireless connection. The reference ground terminal may be connected to a ground point on 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 branch and the second branch of the antenna radiator are bendable, which facilitates changing the shape of the antenna radiator to adapt it to the structure of the frame and improves the connection stability and reliability between the antenna radiator and the frame.

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

[0041] In an exemplary embodiment, the antenna radiator may be entirely or partially disposed on the left edge of the left frame 21. For example, the main body of the antenna unit 101 may be located on the left edge of the left frame 21 near the left temple, with a first branch extending from the main body along the left edge of the left frame 21, and a second branch extending from the main body along the upper edge of the left frame 21. It should be understood that the first and second branches of the antenna unit 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 entirely or partially disposed on the right edge of the right frame 22. For example, the main body of the antenna unit 102 may be located on the right edge of the right frame 22 near the right temple, with a first branch extending from the main body along the right edge of the right frame 22, and a second branch extending from the main body along the lower edge of the right frame 22. It should be understood that the first and second branches of the antenna unit 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 may be 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 may adopt an LDS (Laser Directed Structure) antenna. The LDS antenna is a laser direct forming technology that uses a CNC laser to directly transfer the circuit pattern to the surface of the component, and uses the three-dimensional surface of the three-dimensional workpiece to form a circuit interconnection structure. Its core material is a modified plastic containing an organic metal complex. This material can release metal particles under laser irradiation to form a 5-10 micron metal layer, thereby forming a metal antenna. The LDS antenna can meet the communication and interaction requirements of the antenna device in devices such as smart glasses.

[0045] In an exemplary embodiment, the antenna radiator of the antenna device may utilize an MPI (Modified Polyimide) antenna. MPI antennas are high-performance antennas manufactured by modifying the formulation of traditional PI (polyimide) materials. MPI antennas have excellent dielectric constant, hygroscopicity, and low transmission loss. They also possess good heat resistance and flexibility, enabling stable operation in various environments while maintaining stable signal transmission quality. These antennas are well suited to the internal 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. LCP antennas are a new type of antenna made of liquid crystal polymer material. LCP antennas have advantages such as low loss, stable dielectric constant, and good sealing. They also have good flexibility and can be bent or folded to optimize the use of space inside and outside the device.

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

[0048] According to the known smart glasses, the circuit board is usually set in one of the temples of the smart glasses, and the antenna system is arranged around the circuit board. This arrangement is limited by the size of the smart glasses themselves, which makes the size of the antenna system itself and the clearance area small, resulting in unsatisfactory working bandwidth and radiation efficiency of the antenna system. In addition, the antenna system is close to some metal components, and in actual use, the antenna is also close to the human body, which affects the antenna bandwidth, impedance matching, efficiency and other performance. In addition, the antenna system of current smart glasses usually uses FPC (Flexible Printed Circuit) antenna, which is relatively thick and may cause warping problems due to uneven bonding surface, which in turn leads to deterioration of antenna performance.

[0049] Compared with the smart glasses of the above-mentioned known technology, the smart glasses according to the exemplary embodiment of the present application, by arranging the antenna device on the inside of the frame of the smart glasses, on the one hand, can reduce the space occupied by the circuit board and the like at the temples, reduce the difficulty of antenna design and processing, and make a certain distance between the antenna device and the human body, which is conducive to ensuring the antenna bandwidth, impedance matching, efficiency and other performance; on the other hand, by adopting the LDS antenna or MPI antenna or LCP antenna form, the antenna structure is stable, which can ensure high-quality signal transmission, and the antenna shape has good bendability, so that it can be well adapted to the structure of the frame, further reducing the space occupied by the antenna system in the smart glasses structure, and can realize antenna radiation in some areas that conventional antennas cannot reach, thereby enhancing the radiation directionality of the antenna.

[0050] Furthermore, according to the exemplary embodiments of the present application, the antenna radiator of the antenna device may include a first branch and a second branch. The parasitic coupling effect between the long and short branches can be used to generate additional resonance points (resonant frequencies). Compared to a simple antenna structure, this can cover operating bandwidths in multiple frequency bands. Furthermore, the parasitic coupling effect between the first and second branches helps improve the radiation directionality in specific areas, significantly enhancing the antenna's impedance matching and radiation performance, thus enabling the smart glasses to possess excellent communication capabilities and interactive performance.

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

[0052] Example 1

[0053] Figure 2 A schematic structural diagram of an antenna device of smart glasses according to the first embodiment of the present application is shown.

[0054] Combine Figure 2 As shown, the antenna device of this embodiment may include a first antenna unit, which includes an antenna radiator, a feed 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 first branch 811 is longer than the second branch 812.

[0055] In this embodiment, the antenna radiator of the first antenna unit may be partially located at the inner edge of the right frame 22. The first branch 811 may extend from the first end of the main body 81 along the first direction and be arranged at the edge of the right frame 22, and the second branch 812 may extend from the second end of the main body 81 along the second direction and be arranged at the edge of the right frame 22. In some exemplary embodiments, when the frame of the right frame 22 is a right-angle 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 counterclockwise direction.

[0056] For example, the main body 81 can be located on the right side edge of the inner side of the right frame 22 near the right temple, the first branch 811 extends from one end (first end) of the main body 81 along the right edge of the right frame 22, and the 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 branch and the second branch of the antenna radiator can also extend along the upper edge and the right edge of the right frame 22, respectively, that is, the positions of the first branch and the second branch can be interchangeable. In addition, the antenna radiator of the first antenna unit can also be set on the left edge of the left frame, which will not be repeated here.

[0057] In this embodiment, the antenna structure of the first antenna unit is a monopole antenna. The first branch 811 and the second branch 812 constitute the long and short branches of the antenna radiator. There is a parasitic coupling effect between the long and short branches, which can parasitize additional resonance points.

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

[0059] In some embodiments, the length and / or shape of the branches of the antenna radiator can be adjusted by slits, bends, extensions, etc. on the antenna radiator.

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

[0061] In some other implementations, the feeding structure 91 may also adopt coaxial feeding, metal spring feeding, metal thimble feeding and other structures.

[0062] Figure 3 Schematic diagram of the reflection coefficient of the antenna device of 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 As can be seen, the parasitic coupling effect between the first branch 811 and the second branch 812 gives the antenna device three resonant frequencies: 1.57 GHz, 2.47 GHz, and 5.6 GHz (1.57 GHz is the low-frequency operating frequency). The antenna device's operating bandwidths range from 1.47 GHz to 1.78 GHz for the low frequency band, and from 2.2 GHz to 3.1 GHz and 4.6 GHz to 6.5 GHz for the high frequency band. The three operating bandwidths of the antenna device can meet the needs of GPS mode, BDS mode, and WiFi mode, among others.

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

[0065] Continue to refer Figure 4 , Figure 4 FIG. 4 is a schematic diagram of the total efficiency of the antenna device according to the first embodiment. 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 (Total Efficiency). Figure 4 It can be seen that the total efficiency of the antenna device in the above three working bandwidths is between 70% and 95%. Therefore, the antenna device of this embodiment has good radiation performance and can meet the application requirements of high-precision positioning and navigation.

[0066] Next reference Figure 5 , Figure 5This is a schematic diagram of the 3D radiation direction of the antenna device of Example 1. In the figure, the darker the color, the stronger the antenna's radiation performance. Taking the frequency of 1.559 GHz as an example, it can be seen that the main radiation direction of the antenna device of this embodiment is located directly in front of the right side of the smart glasses. Therefore, when the user wears smart glasses for a VR or AR experience, the antenna device can accurately receive signals directly in front of the human right hand and transmit electromagnetic waves directly in front of the right hand, thereby enabling real-time information interaction with the game controller or control handle in the right hand, 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 branch 811 and the second branch 812, thereby realizing a multi-frequency antenna. This allows the smart glasses to cover multiple operating bandwidths, thereby achieving multiple operating modes such as GPS mode, BDS mode, and Wi-Fi mode. In GPS and BDS modes, the smart glasses can achieve high-precision positioning and navigation; in Wi-Fi mode, the smart glasses can have excellent communication capabilities and interactive performance.

[0068] In addition, according to the antenna device of this embodiment, the parasitic coupling effect between the first branch 811 and the second branch 812 can improve the directionality of the antenna, thereby greatly improving the impedance matching and radiation performance of the antenna, so that the smart glasses have excellent communication capabilities and interactive performance, thereby improving the user experience.

[0069] Example 2

[0070] Figure 6 A schematic structural diagram of an antenna device of smart glasses according to the second embodiment of the present application is shown.

[0071] Combine 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 first branch 821 is longer than 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 portion 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, with the first branch 821 extending from the connecting portion 23 along the lower edge of the right frame 22, and the second branch 822 extending 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 and right frames 21, respectively, i.e., the positions of the first and second branches may be interchangeable. Alternatively, the first and second branches of the antenna radiator may also extend along the upper edges of the right and left frames 22, respectively, which will not be further described here.

[0074] In this embodiment, the antenna structure of the second antenna unit is a monopole antenna. The first branch 821 and the second branch 822 constitute the long and short branches of the antenna radiator. There is a parasitic coupling effect between the long and short branches, which can parasitize additional resonance points.

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

[0076] In some embodiments, the length and / or shape of the branches of the antenna radiator can be adjusted by slitting, bending, extending, etc. the antenna radiator.

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

[0078] In some other implementations, the feeding structure 92 may also adopt coaxial feeding, metal spring feeding, metal thimble feeding and other structures.

[0079] Figure 7 Schematic diagram of the reflection coefficient of the antenna device of 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 can be seen that the parasitic coupling effect between the first branch 821 and the second branch 822 enables the antenna device to have four resonant frequencies, namely 1.7GHz, 2.34GHz, 5.2GHz and 6.2GHz (where 1.7GHz is a low-frequency operating frequency); and the working bandwidth of the antenna device is 1.57GHz to 2.5GHz for the low-frequency band bandwidth and 4.88GHz to 6.4GHz for the high-frequency band bandwidth. Moreover, the antenna device has |S11| less than -10dB in both working bandwidths, so the impedance matching performance is good. The two working bandwidths of the antenna device of this embodiment can meet the GPS mode, BDS mode, WIFI mode, etc., so that the smart glasses used in it can achieve high-precision positioning and navigation, and can have excellent communication capabilities and interactive performance.

[0081] Figure 8 Schematic diagram of the total efficiency of the antenna device of Example 2. Figure 8 It can be seen that the total efficiency of the antenna device in the above two working bandwidths is 70% to 90%. Therefore, the antenna device of this embodiment has good radiation performance and can meet the application requirements of high-precision positioning and navigation.

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

[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 branch 821 and the second branch 822, thereby realizing a multi-frequency antenna. This allows the smart glasses to cover multiple operating bandwidths, thereby achieving multiple operating modes such as GPS mode, BDS mode, and Wi-Fi mode. In GPS and BDS modes, the smart glasses can achieve high-precision positioning and navigation; in Wi-Fi mode, the smart glasses can have excellent communication capabilities and interactive performance.

[0084] In addition, according to the antenna device of this embodiment, the parasitic coupling effect between the first branch 821 and the second branch 822 can improve the directionality of the antenna, thereby greatly improving the impedance matching and radiation performance of the antenna, so that the smart glasses have excellent communication capabilities and interactive performance, thereby improving the user experience.

[0085] Example 3

[0086] Figure 10 A schematic structural diagram of smart glasses according to the third embodiment of the present application is shown.

[0087] Combine Figure 10 As shown, the smart glasses of this embodiment may include a frame, lenses, temples, etc. 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 lenses 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 further include an antenna device disposed on the inner edge of the front frame 2, wherein the inner side 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 branch and the second branch have an adjustable length and / or shape, and the operating bandwidth of the antenna device may include a low-frequency band bandwidth and a high-frequency band bandwidth.

[0090] In this embodiment, the smart glasses may further include a circuit board, an audio output module, a battery module, a sensor, 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 unit of the smart glasses and may include components such as a chip and a shield. The sub-board 51 may include an audio output module and control buttons. For example, the main board 52 and sub-board 51 may be respectively disposed on the right and left temples 42 and 41, or in cavities within the temples. The main board 52 and 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 ear bones and skull of the user, thereby 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, so that the smart glasses can 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 display through the antenna device.

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

[0096] In this embodiment, the antenna device may include one or more of the first antenna unit and the second antenna unit in the aforementioned embodiment 1 and embodiment 2. For the structure, details, and characteristics of the antenna device, please refer to the relevant descriptions in the aforementioned embodiment 1 and embodiment 2, respectively, and 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, and the antenna shape has good flexibility, which can realize antenna radiation in areas that conventional antennas cannot reach, reducing the space occupied by the antenna system in the smart glasses, and meeting the requirements of smart glasses devices for light weight and small size.

[0098] In addition, according to the smart glasses provided in this embodiment, the antenna device thereof utilizes the parasitic coupling effect between the long and short branches to generate additional resonance points, realize a multi-frequency antenna, and enable the smart glasses to operate in multiple modes (GPS mode, BDS mode, WIFI mode, etc.), and can adjust the resonant frequency of the antenna system by adjusting the length and / or shape of the long and short branches, and can enhance the working bandwidth, radiation efficiency and other performance of the antenna system, so that the smart glasses can achieve high-precision positioning and navigation, and have excellent communication capabilities and interactive performance.

[0099] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model disclosed in this application. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A pair of smart glasses, characterized in that: The invention comprises a mirror frame and an antenna device, wherein the antenna device comprises: an antenna radiator, which is disposed at the edge of the mirror frame, and includes a main body, and a first branch and a second branch extending from two ends of the main body; a reference ground terminal; and a feeding structure, one end of which is connected to the body, and the other end of which is connected to the reference ground terminal; 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 band bandwidth and a high-frequency band bandwidth.

2. The smart glasses according to claim 1, wherein: The mirror frame comprises a front frame and a rear frame, and a clearance area is provided between the front frame and the rear frame; The antenna radiator is arranged 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 connecting the left frame and the right frame. The antenna radiator is entirely or partially arranged on the inner edge of the right mirror frame; Or the antenna radiator is entirely or partially arranged on the inner edge of the left mirror frame; Alternatively, the antenna radiator is simultaneously arranged 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 further includes a right temple pivotally connected to the right temple frame, and a left temple pivotally connected to the left temple frame. The main body is arranged 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 arranged on the edge of the right frame; Alternatively, the main body is arranged on the left edge of the left frame close to the left temple, and the first branch and the second branch are respectively extended from two ends of the main body and arranged on the edge of the left frame.

5. The smart glasses according to claim 3, wherein: The main body is located at the connecting portion, the first branch extends from the connecting portion along the lower edge of the right frame, and the second branch extends from the connecting portion 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 , with a width of 0.01λ L1 ~0.022λ L1 ; The length of the second branch is 0.07λ L1 ~0.12λ L1 , with a width of 0.01λ L1 ~0.03λ L1 ; Among them, λ L1 is the wavelength of the antenna device in free space at the low-frequency operating frequency, and 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 band bandwidth includes a first high frequency band bandwidth and a second high frequency band bandwidth, the first high frequency band bandwidth is 2.2 GHz to 3.1 GHz, and the second high frequency band bandwidth is 4.6 GHz to 6.5 GHz.

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

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

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

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