Smart glasses

Abstract

A pair of smart glasses. The smart glasses comprise a supporting piece, an imaging device and an antenna. The imaging device is mounted on the supporting piece; the antenna comprises an antenna body and coaxial lines electrically connected to the antenna body, wherein each coaxial line is provided with a shielding layer; and the supporting piece has electrical conductivity, the coaxial lines are fixed to the supporting piece, and the shielding layer is electrically connected to the supporting piece so as to realize grounding of the antenna. A grounding structure, which is additionally provided on the antenna, can be omitted, such that a space occupied by the antenna is reduced, thereby improving a space utilization rate of the smart glasses, and in turn improving the compactness thereof.

Description

Smart glasses

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 29, 2024, with application number 202420627892.7 and invention name “Smart Glasses”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The utility model relates to the technical field of smart glasses, in particular to a pair of smart glasses. Background Art

[0003] With the continuous development of technology, smart glasses have now been deeply integrated with augmented reality (AR) technology. The resulting AR smart glasses combine processors, displays, sensors, and input devices to provide an AR platform in the form of a vehicle. Through the physical carrier of the glasses, the display screen is brought close to the user's eyes. These products are generally used for a long time, and the hardware design requires strict control over the size and weight of the smart glasses, leaving very limited space for antennas. Summary of the Invention

[0004] The main purpose of the utility model is to provide a kind of smart glasses, aiming to reduce the space occupied by the antenna.

[0005] To achieve the above-mentioned purpose, the smart glasses proposed in the present invention include:

[0006] Support members;

[0007] an imaging device mounted on the support member; and

[0008] An antenna comprising an antenna body and a coaxial line electrically connected to the antenna body, wherein the coaxial line has a shielding layer;

[0009] The support member is conductive, the coaxial line is fixed to the support member, and the shielding layer is electrically connected to the support member to achieve grounding of the antenna.

[0010] Optionally, the coaxial line further has an outer insulating layer covering the shielding layer, and the coaxial line is peeled to have a plurality of contact positions spaced apart along its length, the contact positions exposing the shielding layer to be electrically connected to the support member.

[0011] Optionally, a protective layer is provided on the outer surface of the support member, and the support member is provided with an electrical connection position corresponding to each grounding position, and the protective layer is removed at the electrical connection position to be electrically connected to the shielding layer corresponding to the grounding position.

[0012] Optionally, the electrical connection position is configured as a laser engraving position or a polishing position.

[0013] Optionally, the electrical connection position and the grounding position are electrically connected via a conductive adhesive.

[0014] Optionally, the imaging device includes an optical engine and a waveguide plate, and the supporting member includes a first supporting portion for mounting the waveguide plate and a second supporting portion for mounting the optical engine, and both the first supporting portion and the second supporting portion are provided with the electrical connection position.

[0015] Optionally, the outer insulating layer of the coaxial line is bonded and fixed to the support member.

[0016] Optionally, the coaxial line is provided with a plurality of bonding positions spaced apart along its length direction, and the plurality of bonding positions and the plurality of connection positions are alternately arranged in sequence.

[0017] Optionally, the support member is a frame of the smart glasses or an independent component located in the frame.

[0018] Optionally, the imaging device includes two waveguide plates, and the support member includes two first support parts for installing the two waveguide plates respectively. Each waveguide plate is provided with an antenna, and the coaxial lines of the two antennas extend to the upper side of the same first support part and are fixed and electrically connected to the first support part.

[0019] The above-mentioned smart glasses have at least the following beneficial effects:

[0020] The technical solution of the present utility model adopts a support, an imaging device and an antenna, which is installed on the support; the antenna includes an antenna body and a coaxial line electrically connected to the antenna body, and the coaxial line has a shielding layer; the support is conductive, the coaxial line is fixed to the support, and the shielding layer is electrically connected to the support to achieve antenna grounding. It can be understood that smart glasses such as AR glasses require built-in antennas to receive Wifi and Bluetooth signals, among which coaxial line feeding is a common feeding method for antennas. However, the electrical length of a longer coaxial line is comparable to the working wavelength of the antenna, and the shielding layer of the coaxial line has a strong surface current distribution, which affects the impedance matching and consistency of the antenna. This solution electrically connects the shielding layer of the coaxial line to a conductive support, so that the support not only has its own supporting effect, but also can improve the surface current distribution of the shielding layer of the coaxial line, improve the influence of the surface current on the impedance matching and consistency of the antenna, and improve the antenna performance; therefore, this solution can save the additional grounding structure of the antenna, thereby reducing the space occupied by the antenna, improving the space utilization of smart glasses, and thus improving the compactness of smart glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] FIG1 is a schematic structural diagram of an embodiment of the smart glasses of the present invention;

[0023] FIG2 is a schematic structural diagram of the electrical connection position of the antenna of the smart glasses of the present invention;

[0024] FIG3 is a partial enlarged view of point A in FIG2 .

[0025] Description of Figure Numbers:

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The utility model provides a pair of smart glasses.

[0032] 1 to 3 , in one embodiment of the present invention, the smart glasses include a support 100, an imaging device 200, and an antenna, which is mounted on the support 100; the antenna includes an antenna body, and a coaxial line 300 electrically connected to the antenna body, the coaxial line 300 having a shielding layer; the support 100 is conductive, the coaxial line 300 is fixed to the support 100, and the shielding layer is electrically connected to the support 100 to achieve antenna grounding.

[0033] Smart glasses such as AR glasses require built-in antennas to receive signals such as Wifi and Bluetooth. Among them, coaxial line 300 feeding is a common feeding method for antennas. However, the electrical length of the longer coaxial line 300 is comparable to the working wavelength of the antenna. The shielding layer of the coaxial line 300 has a strong surface current distribution, which affects the impedance matching and consistency of the antenna. This solution electrically connects the shielding layer of the coaxial line 300 to the conductive support 100. In this way, the support 100 not only has its own supporting effect, but also can improve the surface current distribution of the shielding layer of the coaxial line 300, improve the effect of the surface current on the impedance matching and consistency of the antenna, and improve the antenna performance. Therefore, this solution can save the additional grounding structure of the antenna, thereby reducing the space occupied by the antenna, improving the space utilization of the smart glasses, and thus improving the compactness of the smart glasses.

[0034] Furthermore, the coaxial line 300 also has an outer insulating layer covering the shielding layer, and when the coaxial line 300 is peeled off, a plurality of grounding positions are spaced apart along its length, exposing the shielding layer at the grounding positions for electrical connection with the support member 100. It is understood that collisions are inevitable during use or transportation, and collisions can easily cause the grounding positions to become electrically disconnected from the support member 100, that is, the shielding layer and the support member 100 to become electrically disconnected. In this solution, multiple grounding positions are provided on the coaxial line 300. Even if the electrical connection between a particular grounding position and the support member 100 is disconnected, the remaining grounding positions remain electrically connected to the support member 100. This ensures the stability of the electrical connection between the shielding layer and the support member 100, thereby improving antenna performance.

[0035] Specifically, in this embodiment, the coaxial line 300 is provided with three grounding positions. The shielding layer of the coaxial line 300 is exposed at three positions, and each grounding position is electrically connected to three positions of the support member 100. In a second embodiment, the coaxial line 300 may also have two grounding positions. In a third embodiment, the coaxial line 300 may also have five grounding positions; the specific number of grounding positions of the coaxial line 300 is not limited herein.

[0036] Optionally, a protective layer is provided on the outer surface of the support member 100, and an electrical connection position 110 is provided on the support member 100 corresponding to each grounding position. The protective layer is removed at the electrical connection position 110 to electrically connect it to the shielding layer of the corresponding grounding position. It can be understood that by first removing the protective layer on the outer surface of the support member 100 and then electrically connecting the electrical connection position 110 to the shielding layer of the corresponding grounding position, the influence of the protective layer on the electrical connection can be avoided, thereby increasing the stability of the antenna grounding.

[0037] The electrical connection points 110 are configured as laser engraved points. Specifically, these points are where the protective layer on the outer surface of the support member 100 is removed through a laser engraving process. Laser engraving offers high precision, accurately removing the protective layer at fixed locations, thereby reducing machining errors and improving the fit between the electrical connection points 110 and the connection points. Furthermore, the laser engraving process is cost-effective due to its high speed, one-step processing, and low energy consumption. Furthermore, its high processing efficiency can improve the production efficiency of smart glasses.

[0038] The electrical connection position 110 is configured as a grinding position. Specifically, the grinding position refers to a position where a protective layer on the outer surface of the support member 100 is removed by a grinding process.

[0039] The protective layer may be a coating layer. When the support member 100 is a metal support member 100 , the protective layer may also be an oxide layer.

[0040] Optionally, the electrical connection position 110 is electrically connected to the grounding position through a conductive adhesive 400. This is because, firstly, the conductive adhesive 400 has good conductivity and can effectively conduct current, which can improve the conductivity between the shielding layer and the support member 100. Secondly, the conductive adhesive 400 is easy to process and can be easily processed into various forms. When the conductive adhesive 400 is used to conduct the shielding layer and the support member 100, the conductive adhesive 400 can adapt to the gap between the shielding layer and the support member 100 and form a specific form, thereby reducing the operational difficulty of conduction between the shielding layer and the support member 100. Thirdly, the conductive adhesive 400 has a long service life and will not reduce its conductivity and adhesion over time. Therefore, using the conductive adhesive 400 to conduct the support member 100 and the shielding layer can not only ensure the stability of the grounding of the shielding layer, but also increase the stability of the connection between the support member 100 and the shielding layer. Fourthly, the conductive adhesive 400 also has excellent plasticity and scalability, and can be processed by coating, printing, spraying, and other processing methods on substrates of different shapes and sizes formed between the shielding layer and the support member 100, thereby reducing the difficulty of operation. Fifthly, the conductive adhesive 400 has excellent adhesion properties, and therefore, the conductive adhesive 400 can also increase the connection strength between the coaxial line 300 and the support member 100. Sixthly, the conductive adhesive 400 has high stability. During the preparation process, the conductive adhesive 400 can control its conductive performance and stability by adjusting parameters such as the composition of the colloidal matrix and the concentration of the conductive particles. In this way, it can be formulated according to the current intensity of the shielding layer of the coaxial line 300 of the smart glasses, which can better improve the impedance matching and consistency of the surface current on the antenna. Seventhly, the conductive adhesive 400 has a low cost, which can reduce the grounding cost of the smart glasses.

[0041] Among them, the conductive glue 400 can be silver powder conductive glue, carbon conductive glue, copper silver conductive glue, carbon nanotube conductive glue, silver paste conductive glue, conductive epoxy resin glue, nickel coating conductive glue or high viscosity conductive glue, etc., and no specific restrictions are made on the conductive glue 400 here.

[0042] In other embodiments, copper oxide paste may also be used to achieve grounding of the support member 100 and the shielding layer.

[0043] Optionally, the imaging device 200 includes an optical machine and a waveguide plate 210, and the support member 100 includes a first support portion 120 for installing the waveguide plate 210, and a second support portion 130 for installing the optical machine, and the first support portion 120 and the second support portion 130 are both provided with an electrical connection position 110; this is because the side area of ​​the second support portion 130 is larger, so that the area of ​​the electrical connection position 110 on the second support portion 130 can be larger, so that more conductive glue 400 can be applied, so that the volume of the cured conductive glue 400 is larger, thereby making the conductive performance and fixing performance of the shielding layer and the support member 100 more stable.

[0044] Optionally, the outer insulating layer of the coaxial line 300 is bonded and fixed to the support member 100 . This is because the bonding connection method is simple and can improve the connection efficiency between the coaxial line 300 and the insulating layer.

[0045] Furthermore, the outer insulating layer of the coaxial line 300 is bonded to the support member 100 by means of the structural adhesive 500. This is because the structural adhesive 500 has high strength, which can improve the connection strength between the outer insulating layer of the coaxial line 300 and the support member 100, and reduce the probability of unstable connection between the outer insulating layer of the coaxial line 300 and the support member 100, thereby affecting the grounding effect between the support member 100 and the shielding layer. Secondly, the structural adhesive 500 has a short curing time, which can greatly improve the connection efficiency between the outer insulating layer of the coaxial line 300 and the support member 100, thereby improving the production efficiency of the smart glasses. Furthermore, the structural adhesive 500 is waterproof and shockproof, making the smart glasses more durable. Of course, the present invention is not limited to this. In other embodiments, the outer insulating layer of the coaxial line 300 can also be directly bonded to the support member 100 by means of the conductive adhesive 400.

[0046] In this solution, the coaxial line 300 is connected to the outer insulating layer and the support member 100 through the structural adhesive 500, and the shielding layer and the support member 100 are electrically connected through the conductive adhesive 400, so that the coaxial line 300 can be stably fixed and have an excellent grounding effect.

[0047] Furthermore, the structural adhesive 500 is configured as UV adhesive (shadowless adhesive, photosensitive adhesive or ultraviolet light curing adhesive). This is because the UV adhesive can cure quickly, which can greatly improve the connection efficiency between the outer insulating layer of the coaxial cable 300 and the support 100, thereby improving the production efficiency of the smart glasses. Secondly, the UV adhesive has strong adhesion, which can improve the connection strength between the outer insulating layer of the coaxial cable 300 and the support 100, and reduce the probability of unstable connection between the outer insulating layer of the coaxial cable 300 and the support 100, which affects the grounding effect between the support 100 and the shielding layer. Moreover, the odor is small, which can reduce the odor of the smart glasses and improve the comfort of the user. Furthermore, the reliability of the UV adhesive is high, which can improve the connection stability between the outer insulating layer of the coaxial cable 300 and the support 100. Of course, the present invention is not limited to this. In other embodiments, the structural adhesive 500 can also be configured as a polyurethane structural adhesive (PUR) or a polycarbonate structural adhesive (PC).

[0048] Optionally, the coaxial line 300 is provided with a plurality of bonding positions spaced apart along its length direction, and the plurality of bonding positions and the plurality of connection positions are alternately arranged in sequence, which can increase the stability of the electrical connection between the connection positions and the electrical connection positions 110 .

[0049] Optionally, the support member 100 is the frame of the smart glasses or an independent component located in the frame. Specifically, the present solution achieves grounding through the frame of the smart glasses or an independent component located in the frame. This can save the additional grounding structure of the antenna, thereby reducing the space occupied by the antenna grounding structure, improving the space utilization of the frame, and further improving the compactness of the frame.

[0050] Furthermore, in this embodiment, the support member 100 is made of a conductive metal. This is because conductive metal not only has excellent electrical conductivity but also possesses high strength and rigidity. This metal can improve current distribution on the surface of the shielding layer of the coaxial cable 300 while providing more stable support for the imaging device 200. Of course, the present invention is not limited to this. In other embodiments, the support member 100 can also be made of a conductive non-metal, as long as it can achieve both electrical conductivity and support.

[0051] Optionally, the imaging device 200 includes two waveguides 210, and the support member 100 includes two first support portions 120 for mounting the two waveguides 210, respectively. Each waveguide 210 is provided with an antenna, and the coaxial lines 300 of the two antennas extend to the upper side of the same first support portion 120 and are fixed and electrically connected thereto. This reduces the number of electrical connection points on the support member 100, thereby improving the electrical connection efficiency between the coaxial lines 300 and the support member 100, and thereby increasing the production efficiency of the smart glasses.

[0052] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pair of smart glasses, characterized in that: include: Support members; an imaging device, mounted on the support member; as well as An antenna comprising an antenna body and a coaxial line electrically connected to the antenna body, wherein the coaxial line has a shielding layer; The support member is conductive, the coaxial line is fixed to the support member, and the shielding layer is electrically connected to the support member to achieve grounding of the antenna.

2. The smart glasses according to claim 1, wherein: The coaxial line further comprises an outer insulating layer covering the shielding layer, and the coaxial line is peeled to have a plurality of contact positions spaced apart along its length direction, wherein the shielding layer is exposed at the contact positions for electrical connection with the support member.

3. The smart glasses according to claim 2, wherein: The outer surface of the support member is provided with a protective layer. The support member is provided with an electrical connection position corresponding to each of the grounding positions. The protective layer is removed at the electrical connection position to electrically connect with the shielding layer corresponding to the grounding position.

4. The smart glasses according to claim 3, wherein: The electrical connection position is configured as a laser engraving position or a polishing position.

5. The smart glasses according to claim 3, wherein: The electrical connection position is electrically connected to the grounding position through conductive glue.

6. The smart glasses according to claim 3, wherein: The imaging device includes an optical engine and a waveguide plate. The supporting member includes a first supporting portion for mounting the waveguide plate and a second supporting portion for mounting the optical engine. Both the first supporting portion and the second supporting portion are provided with the electrical connection position.

7. The smart glasses according to claim 2, wherein: The outer insulating layer of the coaxial line is bonded and fixed to the support member.

8. The smart glasses according to claim 7, wherein: The coaxial line is provided with a plurality of bonding positions spaced apart along its length direction, and the plurality of bonding positions and the plurality of connection positions are alternately arranged in sequence.

9. The smart glasses according to claim 1, wherein: The supporting member is a frame of the smart glasses or an independent component located in the frame.

10. The smart glasses according to any one of claims 1 to 9, wherein: The imaging device includes two waveguide plates, and the support member includes two first support parts for mounting the two waveguide plates respectively. Each waveguide plate is provided with an antenna, and the coaxial lines of the two antennas extend to the upper side of the same first support part and are fixed and electrically connected to the first support part.

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