Glasses

Abstract

The utility model discloses a pair of glasses, and relates to the technical field of glasses. The surface of the lens is provided with a metal area, and the side surface of the lens is provided with a pad area. The metal area is provided with a gap formed by slotting, and the feed end of the gap is located in the bonding pad area. The glasses frame is composed of a front glasses frame and a rear glasses frame, the front glasses frame and the rear glasses frame define a containing space, and the bonding pad area is located in the containing space. Wherein the feed coaxial line is located in the accommodating space and is connected with the feed end, so that the feed end connected with the feed coaxial line enters an open circuit state, that is, the feed coaxial line is directly used as a feed line of the gap, the situation that a bonding pad area needs to be set to be large when a coupling mode is conventionally adopted is avoided, the miniaturization design of the bonding pad area is achieved, and the size of the antenna is reduced. Therefore, the bonding pad area and the camera module can be effectively accommodated in the accommodating space enclosed by the front glasses frame and the rear glasses frame, so that the miniaturization requirement of the glasses is met.

Description

Technical Field

[0001] This application relates to the technical field of glasses, and particularly to a pair of glasses. Background Art

[0002] Currently, some glasses are provided with transparent lens antennas, which are antennas designed on transparent lenses using transparent metals such as metal grids. This solution can not only achieve the functions of the antenna but also does not occupy additional space.

[0003] With the emergence of the demand for miniaturization of glasses, the volume of the frame housing will gradually shrink. In the case where a camera module needs to be retained, since the antenna provided on the lens of the glasses excites the frame through a coupling method, the area of the relatively set pad region is large, so that the shrunk frame cannot effectively accommodate the pad region, and the pad region will be partially exposed outside the frame housing, which is not conducive to the miniaturization of the glasses. Summary of the Utility Model

[0004] The main purpose of this application is to provide a pair of glasses, aiming to solve the technical problem of how to enable the frame housing with reduced volume to effectively accommodate the camera module and the pad region.

[0005] To achieve the above object, this application proposes a pair of glasses, which includes a lens and a frame.

[0006] A metal region is provided on the surface of the lens, and a pad region is provided on the side surface of the lens.

[0007] There is a slit formed by a slit on the metal region, and the feeding end of the slit is located within the pad region.

[0008] The frame is composed of a front frame and a rear frame. The front frame and the rear frame enclose an accommodation space, and the pad region is located within the accommodation space.

[0009] Among them, the feeding coaxial line is located within the accommodation space and is connected to the feeding end.

[0010] In one embodiment, the lens includes a first surface and a second surface opposite to the first surface, and a side surface located between the first surface and the second surface. At least part of the pad region is provided on the side surface.

[0011] In one embodiment, at least part of the feeding coaxial line extends along the side surface.

[0012] In one embodiment, the lens includes a front protection sheet and an antenna carrier sheet, and the metal region and the pad region are located on the antenna carrier sheet.

[0013] The first surface of the front protection sheet is attached to a part of the inner surface of the front frame.

[0014] The first surface of the antenna carrier sheet is attached to the second surface of the front protection sheet.

[0015] In one embodiment, the glasses are AR glasses. Among them, the accommodation space includes a first accommodation space and a second accommodation space located below the first accommodation space;

[0016] At least part of the optical engine module is located in the first accommodation space, and the second accommodation space is used to accommodate the pad area and the camera module.

[0017] In one embodiment, the feeding coaxial line is composed of an inner conductor and an outer conductor, and the feeding end is composed of a first stitch and a second stitch;

[0018] The inner conductor is connected to the second stitch, the outer conductor is connected to the first stitch, and the feeding end is in an open state.

[0019] In one embodiment, the pad area of the pad has an area of 5mm * 0.9mm;

[0020] The slit includes a first slit unit, a second slit unit, and a third slit unit;

[0021] The length of the first slit unit is 7.25mm, and the width of the first slit unit is 0.2mm;

[0022] The length of the second slit unit is 20mm, and the width of the second slit unit is 0.5mm;

[0023] The length of the third slit unit is 4.5mm, and the width of the third slit unit is 0.5mm;

[0024] Among them, the first end of the first slit unit is the feeding end.

[0025] In one embodiment, the second end of the first slit unit is perpendicular to the second slit unit and is connected to the second slit unit, forming an L-shaped open slit unit with the second slit unit;

[0026] The second slit unit is perpendicular to the third slit unit and is connected to the third slit unit, forming an L-shaped slit unit with the third slit unit.

[0027] In one embodiment, the metal area is divided into a transparent metal grid area and a solid metal area;

[0028] Inside the first slit unit, the second slit unit, and the third slit unit located on the transparent metal grid area, filling grids are provided, and the grid line shape of the filling grids is the same as the grid line shape of the transparent metal grid area.

[0029] In one embodiment, no contour lines are provided at the edges of the slit and the edges of each filling grid; and,

[0030] There are gaps between the filled meshes, and there are also gaps between the slits and the filled meshes provided in the slits.

[0031] In one embodiment, the transparent metal mesh area is composed of a first metal mesh partial area and a second metal mesh partial area. The first metal mesh partial area, the pad area, and the solid metal area are located within the accommodation space, and the second metal mesh partial area is located outside the accommodation space.

[0032] One or more technical solutions proposed in this application have at least the following technical effects:

[0033] A pair of glasses is proposed, which includes: lenses and a frame; a metal area is provided on the surface of the lenses, and a pad area is provided on the side of the lenses; there are slits formed by openings on the metal area, and the feeding ends of the slits are located within the pad area; the frame is composed of a front frame and a rear frame, and the front frame and the rear frame enclose an accommodation space, and the pad area is located within the accommodation space; wherein, the feeding coaxial line is located within the accommodation space and is connected to the feeding end.

[0034] That is, in this application, by setting the feeding ends of the slits formed by opening slits on the metal area on the surface of the lenses within the pad area on the side of the lenses, the feeding coaxial line inserted into the pad area can be directly connected to the feeding ends, so that the feeding ends connected to the feeding coaxial line enter an open circuit state, that is, the feeding coaxial line is directly used as the feeder of the slits, avoiding the conventional coupling method and the need for a relatively large pad area when coupling and feeding the slits through a microstrip line. The miniaturized design of the pad area is realized, so that the pad area and the camera module can be effectively accommodated within the accommodation space enclosed by the front frame and the rear frame, thereby meeting the miniaturization requirements of the glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0036] In order to more clearly illustrate the technical solutions in the embodiments of this application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 It is a schematic structural diagram of the glasses of this application;

[0038] Figure 2 It is a schematic structural diagram of the conventional glasses of this application;

[0039] Figure 3 It is a schematic diagram of the position of the camera module on the glasses;

[0040] Figure 4 Schematic diagram of the lens structure of the glasses in this application;

[0041] Figure 5 Schematic diagram of the specific connection of the feeding coaxial line and the feeding end in this application;

[0042] Figure 6 Schematic diagram of the positions of the gap units in the gap in this application;

[0043] Figure 7 Schematic diagram of the curve of the simulated input impedance of the gap in this application varying with frequency;

[0044] Figure 8 Schematic diagram of the surface current distribution of the gap in this application at the 2.6 GHz frequency point;

[0045] Figure 9 Schematic diagram of the surface current distribution of the gap in this application at the 5.6 GHz frequency point;

[0046] Figure 10 Schematic diagram of the surface current distribution of the gap in this application at the 7.5 GHz frequency point;

[0047] Figure 11 Schematic diagram of the curve of the antenna efficiency of the gap proposed in this application and the antenna efficiency of the conventional pure metal gap varying with frequency;

[0048] Figure 12 Schematic diagram of the specific structure of the filled grid in the gap in this application;

[0049] Figure 13 Schematic diagram of the curve of the antenna efficiency when there is a filled grid inside the gap and the antenna efficiency when there is no filled grid inside the gap;

[0050] Figure 14 Schematic diagram of the curve of the antenna efficiency of the gap proposed in this application and the antenna efficiency of the conventional non - transparent gap varying with frequency.

[0051] Explanation of the reference numerals in the attached drawings:

[0052] 10. Metal area; 101. Transparent metal grid area; 102. Solid metal area;

[0053] 20. Gap; a. Feeding end; 201. First gap unit; 202. Second gap unit; 203. Third gap unit;

[0054] 30. Pad area;

[0055] 40. Feeding coaxial line;

[0056] 2011, the first suture; 2012, the second suture; 4011, the inner conductor; 4012, the outer conductor;

[0057] b. The first filling grid; c. The second filling grid; d. The third filling grid.

[0058] The realization of the purpose, functional features and advantages of this application will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0059] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of this application and are not used to limit this application.

[0060] To better understand the technical solutions of this application, the following will be described in detail with reference to the drawings of the specification and specific embodiments.

[0061] The main solution of the embodiment of this application is: a pair of glasses is proposed, and the glasses include: lenses and a frame; a metal area is provided on the surface of the lens, and a pad area is provided on the side of the lens; there is a slit formed on the metal area, and the feeding end of the slit is located within the pad area; the frame is composed of a front frame and a rear frame, and the front frame and the rear frame enclose an accommodation space, and the pad area is located within the accommodation space; wherein, the feeding coaxial line is located within the accommodation space and is connected to the feeding end.

[0062] With the emergence of the demand for miniaturization of glasses, the volume of the frame shell will gradually shrink. In the case where the camera module needs to be retained, since the slit provided on the lens of the glasses excites the frame by means of coupling, the area of the relatively arranged pad area is large, so that the shrunk frame cannot effectively accommodate the pad area, and the pad area will be partially exposed outside the frame shell, which is not conducive to the miniaturization of the glasses.

[0063] This application provides a solution. By setting the feeding end of the slit formed by slitting the metal area on the surface of the lens within the pad area on the side of the lens, the feeding coaxial line inserted into the pad area can be directly connected to the feeding end, so that the feeding end connected to the feeding coaxial line enters an open state, that is, the feeding coaxial line is directly used as the feeder of the slit, avoiding the situation where a relatively large pad area needs to be set in the conventional coupling method of coupling the slit through a microstrip line, realizing the miniaturized design of the pad area, enabling the pad area and the camera module to be effectively accommodated within the accommodation space enclosed by the front frame and the rear frame, thereby meeting the miniaturization requirements of the glasses.

[0064] Based on this, the embodiment of this application provides a pair of glasses, referring to Figure 1 , Figure 1 is the structural schematic diagram of the glasses of this application.

[0065] In this embodiment, the glasses include lenses and a frame; a metal area 10 is provided on the surface of the lens, and a pad area 30 is provided on the side of the lens; a slit 20 formed by a slit is provided on the metal area 10, and the feeding end a of the slit 20 is located within the pad area 30; the frame consists of a front frame and a rear frame, and the front frame and the rear frame enclose an accommodation space, and the pad area 30 is located within the accommodation space; wherein, the feeding coaxial line 40 is located within the accommodation space and is connected to the feeding end a. Among them, in a feasible implementation manner, the pad area of the pad area 30 is 5mm * 0.9mm.

[0066] Combined Figure 2 with Figure 3 a conventional pair of glasses will be described. First, from Figure 2 it can be seen that Figure 2 a transparent slit provided on the lens of the glasses is proposed, which excites the frame on the glasses by a coupling method. Specifically, the coupling part (microstrip line) is provided on the pad area, and based on this coupling part, the coaxial line is indirectly connected to the feeding coplanar waveguide. Therefore, the area of the corresponding pad area is relatively large, which is 8.4mm * 5mm. However, according to Figure 3 it can be seen that in addition to the pad area, the camera module also needs to be synchronously provided within the frame housing (i.e., the accommodation space in this embodiment). Therefore, in the case where the frame housing is miniaturized with the glasses and the accommodation space is reduced, the accommodation space in the frame that can be used to hide devices will also be reduced accordingly. Under the condition of first meeting the hiding requirements of the camera module, it will not be possible to effectively accommodate the pad area, resulting in the pad area being partially exposed outside the accommodation space.

[0067] Therefore, based on the above existing defects, a pair of glasses as shown in this embodiment is proposed. Combined Figure 1 for description. In this embodiment, by setting the feeding end a of the slit 20 formed by slitting the metal area 10 within the pad area 30, the feeding coaxial line 40 inserted into the pad area 30 can be directly connected to the feeding end a. At this time, the feeding end a connected to the feeding coaxial line 40 will enter an open circuit state, enabling the electromagnetic wave inside the feeding coaxial line 40 to excite an electromagnetic field at the feeding end a in the open circuit state. Through this electromagnetic field, the slit 20 becomes a device capable of receiving and transmitting wireless signals. Compared with the coupling method shown in Figure 2 , in this embodiment, the feeding coaxial line 40 is directly used as the feeder of the slit 20, avoiding the situation where a relatively large pad area needs to be set for coupling feeding the slit through a microstrip line (coupling part). According to Figure 1 it can be seen that the pad area 30 in this embodiment is significantly smaller than the pad area in Figure 2 , only being 5mm * 0.9mm, compared with Figure 2It is reduced by 89.3% compared with the previous one. It not only realizes the miniaturization of the pad area 30, enables the pad area 30 to be hidden in the accommodation space together with the camera module without the risk of exposure, but also avoids the complex design of the feeding structure due to the need for slot feeding through coupling.

[0068] Among them, the materials of the front frame and the rear frame can be plastic or metal, which play the role of fixing the lens and the camera module.

[0069] It should be noted that the lens includes a first surface, a second surface opposite to the first surface, and a side surface located between the first surface and the second surface. Refer to Figure 1 It can be seen that at least part of the pad area 30 is arranged on the side surface (i.e., Figure 1 at Z in

[0070] In addition, at least part of the feeding coaxial line 30 extends along the side surface. Since the feeding coaxial line is inserted into the accommodation space, in order to facilitate subsequent replacement, a part of the feeding coaxial line is located inside the accommodation space and the other part is located outside the accommodation space, that is, as Figure 1 shown, it extends along the side surface of the lens.

[0071] Specifically, refer to Figure 4 shown, the lens includes a front protection sheet and an antenna carrier sheet; the metal area and the pad area are located on the antenna carrier sheet; the first surface of the front protection sheet is attached to a part of the inner surface of the front frame; the first surface of the antenna carrier sheet is attached to the second surface of the front protection sheet.

[0072] The first surface of the antenna carrier sheet provided with the metal area 10 and the pad area 30 is pasted on the second surface of the front protection sheet through an optically transparent adhesive, and then the first surface of the front protection sheet is attached to a part of the inner surface of the front frame and the second surface of the antenna carrier sheet is attached to a part of the inner surface of the rear frame to form a complete pair of glasses.

[0073] It should be noted that in order to ensure that the composed lens is an integral whole, the shapes of the front protection sheet and the antenna carrier sheet need to be the same, so that the front protection sheet can not only protect the antenna carrier sheet provided with the metal area 10 and the pad area 30, but also provide support for the pad area 30 to prevent the pad area 30 from breaking.

[0074] Among them, the material of the antenna carrier sheet is PET, which is transparent and colorless, and its thickness can be 100um. The material of the front protection sheet is PC, which plays the role of protecting the antenna carrier sheet.

[0075] Further, in the case where the glasses are AR glasses, the accommodation space enclosed by the front frame and the rear frame includes a first accommodation space and a second accommodation space located below the first accommodation space. Part of the optical engine module required for the AR glasses can be located in the first accommodation space, and the camera required for the AR glasses and the pad area proposed in this embodiment are located in the second accommodation space.

[0076] According to Figure 1 it can be seen that at least part of the optical engine module is located in Figure 1 the first accommodation space in Figure 1 (i.e., ① in Figure 1 ), while the pad area and the camera module are arranged in Figure 1 the second accommodation space in

[0077] (i.e., ② in

[0078] ). In this way, the optical engine module and the pad area are separately arranged in different accommodation spaces, avoiding the adverse effects of heat and electromagnetic interference generated by the pad area on the performance of the optical engine module, and improving the overall reliability of the glasses. Figure 5 Specifically, according to

[0079] Figure 5 it can be seen that the feed coaxial line 40 has an inner conductor 4011 and an outer conductor 4012, and an insulating medium between the two. The slit in this embodiment is formed by the first stitch 2011 and the second stitch 2012. Therefore, the two ends enclosing the feed end a can be defined as the first stitch 2011 and the second stitch 2012.

[0079] In this embodiment, in order to enable electromagnetic waves to propagate in the form of an electromagnetic field between the inner conductor 4011 and the outer conductor 4012 in the feed coaxial line 40, to enable the electromagnetic waves to form a complete current loop, and to maintain the structure of the electromagnetic field, so that the electromagnetic waves can transition from the feed coaxial line 40 to the feed end a without loss and feed the slot 20 to which the feed end a belongs, when the feed coaxial line 40 is connected to the feed end a, it is proposed that the inner conductor 4011 of the feed coaxial line 40 needs to be connected to the second suture 2012 of the feed end a, and the outer conductor 4012 of the feed coaxial line 40 needs to be connected to the first suture 2011 of the feed end a. This connection method can make the feed end a enter an open state, enabling the feed coaxial line 40 to directly serve as the feeder of the slot 20 to which the feed end a belongs. Specifically: the inner conductor 4011 is connected to the second suture 2012 by means of low-temperature welding, and at the same time, the outer conductor 4012 is connected to the first suture 2011 by means of low-temperature welding, ensuring that electromagnetic waves can be effectively transmitted from the feed coaxial line 40 to the slot 20 to which the feed end a belongs, and ensuring the integrity and transmission efficiency of the wireless signal.

[0080] At the same time, since the input impedance of the slot 20 is usually not a pure resistance but a complex impedance with a reactance component, connecting the inner conductor 4011 and the outer conductor 4012 of the feed coaxial line 40 to the two sutures of the feed end a respectively helps to achieve impedance matching between the slot 20 and the feed coaxial line 40, reduce wireless signal reflection and loss, and improve the transmission efficiency. In addition, if only the inner conductor 4011 of the feed coaxial line 40 is connected to one suture of the feed end a and the outer conductor 4012 is not connected to the other suture of the feed end a, it will cause wireless signal leakage in the feed coaxial line 40, resulting in energy loss and potential interference problems.

[0081] In a feasible implementation manner, the slot 20 includes a first slot unit 201, a second slot unit 202, and a third slot unit 203;

[0082] The length of the first slot unit 201 is 7.25 mm, and the width of the first slot unit 201 is 0.2 mm; the length of the second slot unit 202 is 20 mm, and the width of the second slot unit 202 is 0.5 mm; the length of the third slot unit 203 is 4.5 mm, and the width of the third slot unit 203 is 0.5 mm; among them, the first end of the first slot unit 201 is the feed end a.

[0083] According to Figure 6 It can be seen that the slot 20 formed by opening a slot in the metal area in this embodiment is composed of three slot units. Through the combination of slot units with different slot lengths, while reducing the slot length and shrinking the metal area 10, multiple resonance points are generated at high frequencies. Specifically as follows:

[0084] As shown Figure 6 in the figure, the second end of the first slot unit 201 is perpendicular to the second slot unit 202 and is connected to the second slot unit 202, forming an L-shaped open slot unit with the second slot unit 202. The length of the L-shaped open slot unit can reach about 26 mm, and the corresponding slot length at 2.4 GHz is 1 / 4 wavelength, which can reduce the length by half compared with the traditional slot. The second slot unit 202 is perpendicular to the third slot unit 203 and is connected to the third slot unit 203, forming an L-shaped slot unit with the third slot unit 203.

[0085] Through the above slot units, multiple resonance points can be generated at high frequencies, specifically as Figures 7 - 10 shown in the figure.

[0086] As Figure 7 shown in the figure is the curve of the simulated input impedance of the slot 20 composed of the first slot unit 201 to the third slot unit 203 in this embodiment changing with frequency. The real part represents the resistance component of the slot 20, including the loss resistance and the radiation resistance, and the imaginary part represents the reactance component of the slot 20, including the inductive reactance and the capacitive reactance. It can be seen that the slot 20 has resonance points at about 2.6 GHz, 5.6 GHz, and 7.5 GHz, that is, the slot 20 in this application can have resonance points at different frequencies, indicating that the slot 20 can effectively transmit or receive electromagnetic waves at these frequencies and will not cause energy loss or reflection due to the inductive or capacitive components of the input impedance. Among them, Figure 7 the horizontal axis in the figure represents frequency, and the vertical axis represents the resistance unit.

[0087] As Figure 8 shown in the figure is the schematic diagram of the surface current distribution of the slot 20 composed of the first slot unit 201 to the third slot unit 203 in this embodiment at the 2.6 GHz frequency point. It can be seen that there is a strong current distribution at the second slot unit 202 of the slot 20. Since the total length of the first slot unit 201 and the second slot unit 202 is about 26 mm, considering the dielectric effect, the total dielectric electrical length of the L-shaped open slot unit composed of the first slot unit 201 and the second slot unit 202 is about 1 / 4 wavelength at the 2.6 GHz frequency point. Therefore, the working mode of the L-shaped open slot unit at this frequency point is 1 / 4 wavelength. Compared with the traditional slot length of 1 / 2 wavelength, the L-shaped open slot unit can reduce the length by half, which is beneficial to reducing the area of the metal region 10 and meeting the subsequent trend of reducing the lens area.

[0088] As Figure 9The figure shows the schematic diagram of the surface current distribution of the slot 20 in this embodiment at the 5.6 GHz frequency point. It can be seen that the surface current is mainly concentrated in the second slot unit 202 and the third slot unit 203, and the directions of the surface currents on the upper surfaces of the second slot unit 202 and the third slot unit 203 are opposite. That is, the second slot unit 202 and the third slot unit 203 play a complementary role in the slot radiation process. Such currents in opposite directions can superimpose the electromagnetic fields, thereby enhancing the radiation efficiency of the slot. In addition, the total length of the second slot unit 202 and the third slot unit 203 is about 25 mm. Therefore, at this time, the second slot unit 202 and the third slot unit 203 together form an L-shaped slot unit with a length of 1 / 2 wavelength for radiation.

[0089] As Figure 10 The figure shows the schematic diagram of the surface current distribution of the slot 20 in this embodiment at the 7.5 GHz frequency point. It can be seen that the surface current is mainly concentrated in the second slot unit 202 and the third slot unit 203, indicating that the second slot unit 202 and the third slot unit 203 are the main regions for radiating or receiving electromagnetic waves at the 7.5 GHz frequency. The operating mode is 3 / 4 wavelength, which means that the lengths of the second slot unit 202 and the third slot unit 203 are 3 / 4 of the wavelength at the 7.5 GHz frequency, enabling the second slot unit 202 and the third slot unit 203 to have a higher radiation efficiency at the 7.5 GHz frequency.

[0090] It should be noted that Figures 8 - 10 the color scale in

[0091] denotes the current density A / m when the surface current flows on the slot 20. Figure 11 the transparent curve in Figure 11 and the curve of the antenna efficiency of the pure metal slot varying with frequency (i.e., the pure metal curve in Figure 11 are compared as

[0092] shown in Figure 11It is also known that when the antenna efficiency of the slot 20 in this embodiment is less than -10 dB, the corresponding operating frequency bands are 2.29 GHz - 2.57 GHz and 3.3 GHz - 8 GHz. According to the WIFI 6E / 7 protocol requirements, the operating frequency bands are 2.4 GHz (802.11b / g, frequency band range 2.400 GHz to 2.4835 GHz), 5 GHz (802.11a, frequency band range 5.150 GHz to 5.825 GHz), and 6E (802.11ax, frequency band range 5.925 GHz to 7.125 GHz). The operating frequency bands of the slot 20 in this embodiment can cover mobile communication frequency bands such as wifi6e / 7, meeting the requirements of antenna broadband and multi-frequency. At the same time, compared with traditional terminal antennas such as LOOP, dipole, and monopole, the slot 20 in this embodiment not only has a simple structure, but also has a wider bandwidth range that it can achieve. Among them, Figure 11 The horizontal axis in it represents frequency, and the vertical axis represents antenna efficiency.

[0093] Furthermore, it should be noted that since the slot 20 in this embodiment is formed by making a slit on the metal area 10, compared with the conventional method of making a slit or window on the metal frame to form a multi-frequency slot antenna, this embodiment will not increase the structural design of the metal frame, and at the same time can ensure the integrity and aesthetics of the metal frame, avoiding the situation of high complexity in glasses design and complex antenna routing caused by making a slit on the metal frame.

[0094] In a feasible implementation manner, referring to Figure 12 As shown, the metal area 10 is divided into a transparent metal mesh area 101 and a solid metal area 102. The functions of the transparent metal mesh area 101 and the solid metal area 102 in this embodiment are the same, and both serve as the ground end of the slot 20. The difference is only that the transparent metal mesh area 101 is exposed outside the accommodation space of the glasses, that is, set on the lens of the glasses. In order to achieve a transparent effect and avoid blocking the user's line of sight, the transparent metal mesh area 101 is realized by an ultra-fine metal mesh. Among them, the grid lines of the ultra-fine metal mesh can be set to be 6 um wide, 3 um thick, and 150 um apart, and the light transmittance can reach 83%, which can effectively avoid blocking the user's line of sight and achieve a transparent effect.

[0095] The solid metal area 102 is hidden inside the accommodation space of the glasses. By connecting the solid metal area 102 and the transparent metal mesh area 101, a larger ground end area is formed. Because a larger ground end area can provide a more stable reference plane, reduce wireless signal reflection, and enable more energy to be effectively radiated, thereby better achieving impedance matching and improving the efficiency of the slot 20.

[0096] Inside the first slit unit 201, the second slit unit 202, and the third slit unit 203 located on the transparent metal grid area 101, a filling grid is provided, and the grid line shape of the filling grid is the same as that of the grid lines in the transparent metal grid area 101.

[0097] Because the slits are exposed outside the accommodation space of the glasses, that is, they are provided on the lenses of the glasses. Although the slits 20 formed by slitting on the transparent metal grid area 101 have the same transparent effect as the transparent metal grid area 101, there are still differences in transparency between the lens area with the transparent metal grid area 101 and the lens area without the transparent metal grid area 101. Therefore, in the case of relatively strong light, users can still observe the shape of the slits 20 on the transparent metal grid area 101, which is not conducive to the confidentiality of the slits 20.

[0098] Based on this, this embodiment proposes to provide a filling grid inside each slit unit. Specifically, as Figure 12 shown, a first filling grid b is provided inside the first slit unit 201, a second filling grid c is provided inside the second slit unit 202, and a first filling grid d is provided inside the third slit unit 203. Since the grid line shape of the provided filling grid is the same as that of the grid lines in the transparent metal grid area 101, with a grid line width of 6um, a line thickness of 3um, and a line pitch of 150um, visually, the slits 20 can blend in with the transparent metal grid area 101. Even when users observe the transparent metal grid area 101 in relatively strong light, because the filling grid is provided inside the slits 20, users cannot depict the structure of the slits 20 on the transparent metal grid area 101, ensuring the confidentiality of the slits 20.

[0099] Furthermore, in order to further enhance the confidentiality of the slits 20, no contour lines are provided at the edges of the slits 20 and the edges of each filling grid in this embodiment, that is, the slits 20 and each filling grid are not outlined, reducing the observability of the slits 20 and each filling grid.

[0100] It should be noted that the first filling grid b is partially provided inside the first slit unit 201. As Figure 12 known, that is, the first filling grid b is only provided inside the first slit unit 201 located on the transparent metal grid area 101. Since the first slit unit 201 located in the solid metal area 102 and the pad area 30 does not need to have a transparent effect, the first filling grid b does not need to be provided.

[0101] At the same time, there are gaps between the filling grids, and there are also gaps between the slits 20 and the filling grids provided in the slits 20.

[0102] In order to avoid deterioration of the antenna performance of the slot 20 while achieving the confidentiality of the slot 20, there is no connection between the filling grids arranged inside different slot units in the slot 20, and between each slot unit and the filling grids arranged in each slot unit. That is, there is a certain gap between each filling grid and between each slot unit and the filling grids arranged in each slot unit. This gap can ensure the confidentiality of the slot 20 while not affecting the antenna performance. The gap in this embodiment is set to 50um, and the influence on the antenna performance is as Figure 13 shown in the simulation results shown:

[0103] Figure 13 When the coaxial feeder 40 of this embodiment directly feeds the slot 20, the antenna efficiency when there is a filling grid inside the slot 20 (i.e., the filling grid curve in Figure 13 ) and the antenna efficiency when there is no filling grid inside the slot (i.e., the curve without filling grid in Figure 13 ) are shown in the graph of the change with frequency. It can be seen that the curve of the antenna efficiency when there is a filling grid inside the slot 20 changes less compared with the curve of the antenna efficiency when there is no filling grid inside the slot. This shows that setting a filling grid inside the slot 20 has a small influence on the antenna performance, and can ensure the confidentiality of the slot 20 and achieve transparent operation of the slot 20 without causing adverse effects on the antenna performance.

[0104] In addition, the curve of the change with frequency of the antenna efficiency of the slot 20 composed of the first slot unit 201 to the third slot unit 203 (i.e., the transparent curve in Figure 14 ) and the curve of the change with frequency of the antenna efficiency of the non-transparent slot (i.e., the non-transparent curve in Figure 14 ) are compared as shown in Figure 14 . In this embodiment, for the slot 20, in the frequency band of 2.38GHz - 2.5GHz, its antenna efficiency is about -2.76dB to -3.23dB; in the frequency band of 5.15GHz - 7.125GHz, its antenna efficiency is about -3.55dB to -5.25dB, which can meet the communication index requirements; for the non-transparent slot, in the frequency band of 2.38GHz - 2.5GHz, its antenna efficiency is about -1.45dB to -1.98dB; in the frequency band of 5.15GHz - 7.125GHz, its antenna efficiency is about -1.89dB to -5.65dB. Therefore, compared with the non-transparent slot, for the slot 20 in this embodiment, in the frequency band of 2.38GHz - 2.5GHz, its antenna efficiency loss is less than 1.3dB, and in the frequency band of 5.15 - 7.125GHz, its antenna efficiency loss is less than 1.9dB.

[0105] Among them, Figure 13 and Figure 14The horizontal axis in [it] represents frequency, and the vertical axis represents antenna efficiency.

[0106] In a feasible implementation manner, the transparent metal mesh area is composed of a first metal mesh partial area and a second metal mesh partial area. The first metal mesh partial area, the pad area, and the solid metal area are located inside the accommodation space, and the second metal mesh partial area is located outside the accommodation space.

[0107] In order to improve the fault tolerance rate of the glasses formed after the combination of the lens and the frame, in this embodiment, the transparent metal mesh area is further divided into a first metal mesh partial area and a second metal mesh partial area. Among them, the first metal mesh partial area, the pad area 30, and the solid metal area 102 are located inside the accommodation space. The purpose is to avoid the situation where the accommodation space enclosed by the combined front frame and rear frame produced partially is smaller than the preset accommodation space, resulting in part of the solid metal area being exposed outside the accommodation space. In this embodiment, the area of part of the solid metal area 102 will be converted into the first metal mesh partial area, so as to ensure that the solid metal area 102 and the pad area 30 will not be exposed outside the accommodation space after combination.

[0108] The above are only partial embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the technical concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A pair of glasses, characterized in that, The glasses include lenses and frames; A metal area is provided on the surface of the lens, and a pad area is provided on the side of the lens; There is a slit formed on the metal area, and the feeding end of the slit is located within the pad area; The frame consists of a front frame and a rear frame. The front frame and the rear frame enclose an accommodation space, and the pad area is located within the accommodation space; Among them, a feeding coaxial line is located within the accommodation space and is connected to the feeding end.

2. The glasses according to claim 1, characterized in that, The lens includes a first surface and a second surface opposite to the first surface, and a side surface located between the first surface and the second surface. At least part of the pad area is provided on the side surface.

3. The glasses according to claim 2, characterized in that, At least part of the feeding coaxial line extends along the side surface.

4. The glasses according to claim 1, characterized in that, The lens includes a front protection sheet and an antenna carrier sheet, and the metal area and the pad area are located on the antenna carrier sheet; The first surface of the front protection sheet is attached to a part of the inner surface of the front frame; The first surface of the antenna carrier sheet is attached to the second surface of the front protection sheet.

5. The glasses according to claim 1, characterized in that, The glasses are AR glasses. Among them, the accommodation space includes a first accommodation space and a second accommodation space located below the first accommodation space; At least part of the optical engine module is located within the first accommodation space, and the second accommodation space is used to accommodate the pad area and the camera module.

6. The glasses according to claim 1, characterized in that, The feeding coaxial line consists of an inner conductor and an outer conductor, and the feeding end is composed of a first stitch and a second stitch; The inner conductor is connected to the second stitch, the outer conductor is connected to the first stitch, and the feeding end is in an open state.

7. The glasses according to claim 1, characterized in that, The pad area of the pad has an area of 5mm * 0.9mm; The slit includes a first slit unit, a second slit unit, and a third slit unit; The length of the first slit unit is 7.25mm, and the width of the first slit unit is 0.2mm; The length of the second slit unit is 20mm, and the width of the second slit unit is 0.5mm; The length of the third slit unit is 4.5mm, and the width of the third slit unit is 0.5mm; Among them, the first end of the first slit unit is the feeding end.

8. The glasses according to claim 7, characterized in that, The second end of the first slit unit is perpendicular to the second slit unit and is connected to the second slit unit, forming an L-shaped open slit unit with the second slit unit; The second slit unit is perpendicular to the third slit unit and is connected to the third slit unit, forming an L-shaped slit unit with the third slit unit.

9. The glasses according to claim 8, characterized in that, The metal area is divided into a transparent metal grid area and a solid metal area; Filling grids are provided inside the first slit unit, the second slit unit, and the third slit unit on the transparent metal grid area, and the grid line shape of the filling grids is the same as that of the grid lines in the transparent metal grid area.

10. The glasses according to claim 9, characterized in that, No contour lines are provided at the edges of the slit and the edges of each filling grid; And, There are gaps between each filling grid, and there are also gaps between the slit and the filling grids provided in the slit.

11. The glasses according to claim 9, characterized in that, The transparent metal mesh region is composed of a first metal mesh partial region and a second metal mesh partial region. The first metal mesh partial region, the pad region, and the solid metal region are located within the accommodation space, and the second metal mesh partial region is located outside the accommodation space.

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