Smart glasses

Abstract

The application discloses intelligent glasses and belongs to the technical field of electronic equipment. The intelligent glasses comprise a radar antenna and a reflection device, wherein the radar antenna is arranged on a lens of the intelligent glasses, and the reflection device is arranged on a lens leg of the intelligent glasses; when the intelligent glasses are in a wearing state, a first part of electromagnetic wave signals emitted by the radar antenna is transmitted to a first face area, a second part of electromagnetic wave signals emitted by the radar antenna is transmitted to the reflection device, and the reflection device is used for reflecting the second part of electromagnetic wave signals to a second face area.

Description

Technical Field

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

[0002] As a medium for users to interact with the real or virtual world, smart glasses need to identify the user's identity information in order to provide better services.

[0003] Currently, facial recognition is typically performed using cameras to identify users. However, this method is susceptible to lighting conditions, and the accuracy of facial recognition is low in poor lighting. Summary of the Invention

[0004] This application discloses a smart glasses that can improve the accuracy of facial recognition.

[0005] This application discloses a smart glasses, including a radar antenna and a reflector, wherein the radar antenna is disposed on the lens of the smart glasses, and the reflector is disposed on the temple of the smart glasses; when the smart glasses are worn, a first part of the electromagnetic wave signal emitted by the radar antenna is transmitted to a first face area, and a second part of the electromagnetic wave signal emitted by the radar antenna is transmitted to the reflector, which is used to reflect the second part of the electromagnetic wave signal to a second face area.

[0006] This application provides a smart glasses system, which includes a radar antenna and a reflector. The radar antenna is disposed on the lens of the smart glasses, and the reflector is disposed on the temple of the smart glasses. When the smart glasses are worn, a first portion of the electromagnetic wave signal emitted by the radar antenna is transmitted to a first face region to collect data information from the first face region. A second portion of the electromagnetic wave signal emitted by the radar antenna is transmitted to the reflector, which reflects the second portion of the electromagnetic wave signal emitted by the radar antenna to a second face region to collect data information from the second face region. Since the solution provided in this application is not affected by light, it can improve the accuracy of face recognition. In addition, the solution provided in this application achieves the reuse of the radar antenna, enabling the collection of data information from the second face region without increasing the number of radar antennas, thus reducing costs and minimizing the space occupied by the antennas. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a smart glasses disclosed in an embodiment of this application;

[0008] Figure 2This is a schematic diagram of a smart glasses in a wearing state, as disclosed in an embodiment of this application;

[0009] Figure 3 This is a schematic diagram of the radiation pattern of a radar antenna disclosed in an embodiment of this application;

[0010] Figure 4 This is a schematic diagram of the radiation pattern of another radar antenna disclosed in an embodiment of this application;

[0011] Figure 5 This is a schematic diagram of the radiation pattern of another radar antenna disclosed in the embodiments of this application;

[0012] Figure 6 This is a schematic diagram of the display screen of a smart glasses disclosed in an embodiment of this application;

[0013] Figure 7 This is a schematic diagram of a reflective device disclosed in an embodiment of this application;

[0014] Figure 8 This is a schematic diagram of the antenna system architecture of a smart glasses disclosed in an embodiment of this application. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0017] This application discloses a smart glasses, Figure 1 This is a schematic diagram of a smart glasses disclosed in an embodiment of this application. Figure 2 This is a schematic diagram of a smart glasses in a wearing state, as disclosed in an embodiment of this application.

[0018] like Figure 1 and Figure 2As shown, the smart glasses disclosed in this application include: a radar antenna 110 and a reflector 120, wherein: the radar antenna 110 is disposed on the lens 130 of the smart glasses, and the reflector 120 is disposed on the temple 140 of the smart glasses; when the smart glasses are worn, a first part of the electromagnetic wave signal emitted by the radar antenna 110 is transmitted to a first face area, and a second part of the electromagnetic wave signal emitted by the radar antenna 110 is transmitted to the reflector 120, and the reflector 120 is used to reflect the second part of the electromagnetic wave signal to a second face area.

[0019] When the smart glasses are being worn, an electromagnetic wave signal is emitted to the face via a radar antenna 110 located on the lens 130 of the smart glasses. The face reflects the electromagnetic wave signal, which can provide feedback on the face data. Then, based on the feedback face data and pre-configured face data, face recognition is performed.

[0020] In this application, the first face region is the frontal face region, and the second face region is the side face region. When the smart glasses are being worn, the first part of the electromagnetic wave signal emitted by the radar antenna 110 on the lens 130 of the smart glasses is transmitted to the first face region, which can collect data information of the frontal face region. The second part of the electromagnetic wave signal emitted by the radar antenna 110 is reflected to the second face region by the reflector 120 on the temple 140 of the smart glasses, which can collect data information of the side face region.

[0021] This application provides a smart glasses system, which includes a radar antenna 110 and a reflector 120. The radar antenna 110 is disposed on the lens 130 of the smart glasses, and the reflector 120 is disposed on the temple 140 of the smart glasses. When the smart glasses are worn, a first portion of the electromagnetic wave signal emitted by the radar antenna 110 is transmitted to a first face region to collect data information from the first face region. A second portion of the electromagnetic wave signal emitted by the radar antenna 110 is transmitted to the reflector 120, which reflects the second portion of the electromagnetic wave signal emitted by the radar antenna 110 to a second face region to collect data information from the second face region. Since the solution provided in this application is not affected by light, it can improve the accuracy of face recognition. In addition, the solution provided in this application achieves the reuse of the radar antenna 110, which can collect data information from the second face region without increasing the number of radar antennas 110, thus reducing costs and minimizing the space occupied by the antennas.

[0022] In the embodiments of this application, such as Figure 3As shown, the radiation pattern of the radar antenna 110 may include a first lobe 111 and a second lobe 112. The first lobe 111 is oriented towards the first face region, covering the first face region and collecting data information of the first face region. The second lobe 112 is oriented towards the reflecting device 120. After the electromagnetic wave signal emitted by the second lobe 112 propagates to the reflecting device 120, the reflecting device 120 changes the propagation direction of the electromagnetic wave signal emitted by the second lobe 112 and reflects it to the second face region, covering the second face region and collecting data information of the second face region.

[0023] In this application, the reflective device 120 is disposed on the temple 140 of the smart glasses at a position corresponding to the second lobe 112, in order to improve the reflection effect. In one implementation, the reflective device 120 may be disposed on the inner side of the temple 140 of the smart glasses.

[0024] For example, the first lobe 111 can be the main lobe of the radiation pattern of the radar antenna 110, and the second lobe 112 can be the sidelobe of the radiation pattern of the radar antenna 110. Since the first lobe 111 of the radiation pattern of the radar antenna 110 is oriented towards the first face region, and the second lobe 112 is oriented towards the reflecting device 120, higher gain coverage of the first face region can be achieved, and richer data information of the first face region can be obtained. At the same time, the effective acquisition of data information of the second face region is also guaranteed.

[0025] In one implementation, the radar antenna 110 may include a patch antenna. Exemplarily, the patch antenna may be in the form of a rectangular patch, a circular patch, or a triangular patch, etc., and this application does not impose specific limitations on this.

[0026] In this embodiment of the application, when the patch antenna is a rectangular patch antenna, such as Figure 4 As shown, the equivalent dielectric wavelength of the patch antenna in the operating frequency band is equal to the length of the resonant side of the patch antenna. The feed point 113 of the patch antenna is set at the radiating side of the patch antenna. At this time, the surface current of the patch antenna is symmetrical about the center of the patch antenna, so that a radiation pattern null point can be formed at the angle perpendicular to the patch, thereby forming a double-lobed radiation pattern. As a result, the first lobe 111 of the radiation pattern of the radar antenna 110 faces the first face region, and the second lobe 112 faces the reflecting device 120.

[0027] In this application, the antenna can be fed by coaxial feeding, microstrip feeding, coupled feeding, etc., and this application does not make specific limitations on this.

[0028] It should be noted that, taking a coaxially fed patch antenna as an example, such as Figure 4As shown, when the antenna is working, a surface current is generated on the patch antenna. The side parallel to the surface current is the resonant side, and the side perpendicular to the surface current is the radiating side. The dielectric wavelength is the wavelength of the electromagnetic wave propagating in the dielectric. For example, the patch antenna is partially disposed on a dielectric substrate and partially exposed to air; that is, the patch antenna is located at the interface between the dielectric substrate and air. Based on the dielectric constants of the dielectric substrate and air, the equivalent dielectric constant is obtained. The equivalent dielectric constant is the dielectric constant of the equivalent medium corresponding to the dielectric substrate and air, and the equivalent dielectric wavelength is the wavelength obtained based on the equivalent dielectric constant.

[0029] Furthermore, regardless of the form of the patch antenna, as long as the patch antenna is in TM02 mode (also known as secondary mode), a double-lobed radiation pattern can be formed, thereby making the first lobe 111 of the radiation pattern of the radar antenna 110 face the first face region and the second lobe 112 face the reflector 120.

[0030] In another implementation, such as Figure 5 As shown, the radar antenna 110 may include an antenna element array. In this case, a double-lobed radiation pattern can be obtained by controlling the amplitude and phase of the input signals of different antenna elements in the antenna element array, such that the first lobe 111 of the radiation pattern of the radar antenna 110 faces the first face region, and the second lobe 112 faces the reflecting device 120. Furthermore, this approach facilitates the formation of the double-lobed radiation pattern required by this application.

[0031] In addition to using a fixed-beam antenna element array, a double-lobe pattern can also be achieved by beam scanning, and this application does not impose any specific restrictions on this.

[0032] In this embodiment, the radar antenna 110 can be made of a transparent conductive material. Transparent conductive materials have good light transmittance and electrical conductivity. Examples of transparent conductive materials include, but are not limited to, nano-indium tin oxide (ITO) and silver nanowires.

[0033] Smart glasses mainly include: lenses 130, a frame (primarily composed of conductive metal), nose pads (which can be made of metal or plastic), hinges (made of plastic, used to unfold or fold the glasses), temples 140, and a plastic outer shell. The lenses 130 of the smart glasses mainly consist of glass lenses and a display screen, for example, such as... Figure 6As shown, the display screen mainly consists of a protective glass 131, an optically clear adhesive (OCA) 132, a polarizer 133, a touch layer 134, a panel layer (including an upper glass, a liquid crystal layer, and a lower glass) 135, and a backlight 136. In this application, the radar antenna 110 is disposed on the touch layer of the display screen of the lens 130. Since the glasses display screen does not require touch functionality, the impact of partially damaging the touch layer on the screen is limited. Furthermore, since the touch layer is typically made of ITO, disposing of the radar antenna 110 on the touch layer of the display screen of the lens 130, by reusing the original ITO layer, can reduce the thickness of the lens 130.

[0034] Furthermore, by placing the radar antenna 110 on the touch layer of the display screen of the lens 130, this application does not require additional space occupied by the temple 140 and the mid-frame of the glasses. It can achieve coexistence with wireless connection (WIFI), Bluetooth (BT), 4G and 5G communication antennas on smart glasses, and has good design flexibility.

[0035] In one implementation, such as Figure 7 As shown, the reflecting device 120 may include a smart reflective surface. The smart reflective surface modulates the phase of the second portion of the electromagnetic wave signal emitted by the radar antenna 110, changing the propagation direction of the signal and directing it to the second face region. For example, the smart reflective surface can be a rectangular smart reflective surface with 4*6 units. The number and form of the units on the smart reflective surface can be adjusted according to actual needs, and this application does not impose specific limitations in this regard.

[0036] It should be noted that a Reconfigurable Intelligence Surface (RIS) is essentially an ultra-thin engineered surface that intelligently reconfigures the wireless propagation environment by integrating a large number of miniaturized, low-cost passive reflective elements, thereby improving the performance of wireless communication networks.

[0037] In addition, the reflecting device 120 can also be other structures capable of reflecting electromagnetic wave signals emitted by the radar antenna 110, and this application does not specifically limit it.

[0038] In one implementation, the radar antenna 110 can operate at a millimeter-wave frequency. Of course, the radar antenna 110 can also operate at other higher frequencies (e.g., terahertz) to achieve higher resolution.

[0039] In this application, multiple radar antennas 110 can be used to further improve the accuracy of face recognition. For example, as shown... Figure 1 and Figure 2 As shown, the arrangement of multiple radar antennas 110 can be 2*2, 1*3, etc., and can be set according to actual needs. This application does not make specific limitations on this.

[0040] In this application, as Figure 8 As shown, the antenna system of the smart glasses can include one transmitting antenna and three receiving antennas, that is, the antenna system of the smart glasses is a 1T3R architecture, with four radar antennas 110 in total. Alternatively, it can be replaced with a 2T4R, 2T6R, or other architectures depending on the actual required uplink and download speeds.

[0041] In this application, a radar antenna can be installed on the left lens of the smart glasses, and a reflector can be installed on the left temple as one antenna system to collect data information of the left frontal face and the left side face. A radar antenna can be installed on the right lens of the smart glasses, and a reflector can be installed on the right temple as another antenna system to collect data information of the right frontal face and the right side face. By integrating the data collected by the two antenna systems, a complete facial image can be synthesized. It should be noted that the two antenna systems operate on the same principle.

[0042] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0043] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A type of smart glasses, characterized in that, include: Radar antenna and reflector, wherein: The radar antenna is disposed on the lens of the smart glasses, and the reflector is disposed on the temple of the smart glasses; When the smart glasses are being worn, the first part of the electromagnetic wave signal emitted by the radar antenna is transmitted to the first face area, and the second part of the electromagnetic wave signal emitted by the radar antenna is transmitted to the reflecting device. The reflecting device is used to reflect the second part of the electromagnetic wave signal to the second face area. The first face area is the front face area, and the second face area is the side face area.

2. The smart glasses according to claim 1, characterized in that, The radiation pattern of the radar antenna includes a first lobe and a second lobe, wherein the first lobe is directed toward the first face region and the second lobe is directed toward the reflecting device.

3. The smart glasses according to claim 2, characterized in that, The radar antenna includes a patch antenna.

4. The smart glasses according to claim 3, characterized in that, The equivalent dielectric wavelength of the patch antenna in the operating frequency band is equal to the length of the resonant side of the patch antenna, and the feed point of the patch antenna is located on the radiating side of the patch antenna.

5. The smart glasses according to claim 3, characterized in that, The surface current of the patch antenna is symmetrical about the center of the patch antenna.

6. The smart glasses according to claim 2, characterized in that, The radar antenna includes an antenna element array.

7. The smart glasses according to claim 1, characterized in that, The radar antenna is made of a transparent conductive material.

8. The smart glasses according to claim 1, characterized in that, The reflective device includes a smart reflective surface.

9. The smart glasses according to claim 1, characterized in that, The radar antenna operates at a millimeter-wave frequency.

10. The smart glasses according to claim 1, characterized in that, The radar antenna is multiple.

11. The smart glasses according to claim 1, characterized in that, The reflective device is located on the inside of the temple of the smart glasses.

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