Smart glasses

Abstract

The application provides a kind of smart glasses;The smart glasses include: glasses frame, waveguide lens, light machine and heat conduction piece;Waveguide lens is connected with glasses frame;Light machine is fixedly connected with glasses frame, and the light signal emitted by light machine can be displayed through waveguide lens;Heat conduction piece is arranged on glasses frame, one end of heat conduction piece is connected with light machine, for transmitting the heat of light machine to the area of glasses frame far from the mounting position of light machine.The smart glasses provided by the embodiment of the application can transmit the heat of light machine to other areas of glasses frame by using heat conduction piece, thereby increasing the heat dissipation area, improving the heat dissipation efficiency, can reduce the heat of light machine as much as possible, prevent the performance degradation of light machine, greatly improve the color uniformity and saturation of light signal display output by light machine, greatly improve the user experience;In addition, it can also greatly reduce the surface temperature of the glasses frame close to the light machine, prevent the local temperature of the outer surface of the glasses frame from being too high, avoid user from being scalded or uncomfortable when touching.

Description

Technical Field

[0001] This application relates to the technical field of heat dissipation structures for smart glasses, specifically to a type of smart glasses. Background Technology

[0002] Currently, the concept of the metaverse is gaining increasing popularity, and related industries are developing rapidly. The metaverse provides immersive experiences based on extended reality technology, generates a mirror image of the real world based on digital twin technology, and builds an economic system based on blockchain technology. It closely integrates the virtual and real worlds in terms of economic, social, and identity systems, and allows each user to produce content and edit their world. Extended reality (XR) technology is the foundation of the metaverse, encompassing technologies such as VR, AR, and MR.

[0003] The micro-projection devices commonly used in AR glasses include DLP optical engines, Lcos optical engines, Micro OLED optical engines, and Micro LED optical engines. DLP and Lcos optical engines are relatively large and are often used in freeform surface AR glasses and Birdbath AR glasses. While Micro OLED optical engines are smaller, their brightness is relatively low, making them suitable for high-efficiency geometric waveguide solutions but not for low-efficiency diffractive waveguide solutions. Micro LED optical engines are also small, but their brightness is nearly a hundred times that of Micro OLED optical engines, making them suitable for diffractive waveguide solutions. As AR glasses are a special category of eyewear, they need to be worn for extended periods, therefore, they must be lightweight and thin. AR glasses using freeform surface and Birdbath designs are typically thick and heavy, making them unsuitable for prolonged wear as they can easily cause fatigue. While AR glasses using geometric waveguides combined with Micro OLED optical engines can also achieve the requirement of being thin and light, the geometric waveguide technology for two-dimensional pupil expansion is very immature and not suitable for mass production. The AR glasses solution using diffractive waveguides combined with Micro LED optical engines is currently the thinnest and lightest solution and is suitable for mass production.

[0004] To achieve an extremely thin and light design, AR glasses employing a Micro LED optical engine paired with a diffractive waveguide require extremely precise structural component dimensions. Typically, the heat generated by the optical engine can only be conducted to the metal frame area near it, resulting in a small heat dissipation area and poor heat dissipation capacity. Furthermore, Micro LED optical engines have higher power and generate more heat, leading to a significant increase in engine temperature during prolonged use. The brightness of the red light display screen in the Micro LED optical engine is strongly correlated with temperature; the higher the engine temperature, the more severe the brightness decay of the red light. Therefore, improving the heat dissipation capacity of the optical engine while minimizing impact on the thinness and lightness of the glasses is a pressing issue that needs to be addressed. Summary of the Invention

[0005] This application provides a smart glasses embodiment, the smart glasses comprising:

[0006] Picture frames;

[0007] Waveguide lens, connected to the lens frame;

[0008] An optical engine is fixedly connected to the lens frame, and the optical signals emitted by the optical engine can be displayed through the waveguide lens.

[0009] A heat-conducting component is disposed on the lens frame, one end of which is connected to the optical engine and is used to transfer the heat of the optical engine to an area of ​​the lens frame away from the installation position of the optical engine.

[0010] The smart glasses provided in this application embodiment utilize heat-conducting components to transfer the heat of the optical engine to other areas of the frame, thereby increasing the heat dissipation area and improving heat dissipation efficiency. This can minimize the heat of the optical engine, prevent the performance degradation of the optical engine, and significantly improve the color uniformity and saturation of the output light signal of the optical engine, thus greatly improving the user experience. In addition, it can also significantly reduce the surface temperature near the optical engine frame, preventing the local temperature of the outer surface of the frame from becoming too high and avoiding burns or discomfort to the user. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the smart glasses of this application;

[0013] Figure 2 yes Figure 1 A partial structural diagram of the smart glasses in the embodiment;

[0014] Figure 3 yes Figure 2 A cross-sectional view of the structure along line AA in the embodiment;

[0015] Figure 4 yes Figure 2 A cross-sectional view of the structure along line BB in the embodiment;

[0016] Figure 5 This is a partial structural cross-sectional schematic diagram of another embodiment of the smart glasses of this application;

[0017] Figure 6 This is a partial structural cross-sectional schematic diagram of another embodiment of the smart glasses of this application;

[0018] Figure 7 This is a partial structural cross-sectional schematic diagram of another embodiment of the smart glasses of this application. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0020] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] The term "smart glasses" (or simply "terminal") used herein includes, but is not limited to, devices configured to receive / transmit communication signals via wired connections (such as via the Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for cellular networks, wireless local area networks (WLANs), digital television networks such as DVB-H networks, satellite networks, AM-FM broadcast transmitters, and / or other communication terminals). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal," a "wireless terminal," or a "mobile terminal." Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephone with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, notebooks, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or handheld receivers or other electronic devices that include radiotelephone transceivers. MR, VR, and XR are all smart glasses equipped with cellular communication modules.

[0023] Please see Figure 1 , Figure 1 This is a schematic diagram of the overall structure of an embodiment of the smart glasses of this application. It should be noted that the glasses in this application may include VR (Virtual Reality) or AR (Augmented Reality) glasses, or XR (Extended Reality) glasses, etc. This embodiment only illustrates one type of glasses structure. Please refer to the accompanying drawings. Figure 2 , Figure 2 yes Figure 1 A partial structural diagram of the smart glasses in this embodiment is shown. The smart glasses 100 in this embodiment includes a frame 110, a waveguide lens 120, an optical engine 130, and a heat-conducting component 140.

[0024] Specifically, the waveguide lens 120 is connected to the frame 110, and the optical engine 130 is fixedly connected to the frame 110. The light signal emitted by the optical engine 130 can be displayed through the waveguide lens 120. The waveguide lens 120 and the optical engine 130 can be two sets, and the waveguide lens 120 and the optical engine 130 are set in a one-to-one correspondence. The display principle of the cooperation between the optical engine 130 and the waveguide lens 120 is within the understanding of those skilled in the art and will not be elaborated here.

[0025] Optionally, a heat-conducting element 140 is disposed on the lens frame 110, and one end of the heat-conducting element 140 is connected to the optical engine 130. Specifically, the heat-conducting element 140 and the optical engine 130 can be connected through an auxiliary heat-conducting element 150. The auxiliary heat-conducting element 150 includes any one of graphite sheet and metal film (such as copper foil). In this embodiment, the heat-conducting element 140 can be a heat pipe, and the evaporation end of the heat pipe is connected to the optical engine 130 through the auxiliary heat-conducting element 150 to transfer the heat of the optical engine 130 to the area of ​​the lens frame 110 away from the installation position of the optical engine 130, that is, to the middle position of the lens frame 110 in the figure. In this embodiment, the lens frame 110 can be made of metal.

[0026] During the process of heat being conducted from the evaporation end of the heat pipe to the far end, it will be continuously conducted to the metal frame 110, thereby increasing the heat conduction range of the optical engine 130. This prevents the heat of the optical engine 130 from continuously accumulating near the optical engine compartment, which would cause the chip temperature of the optical engine 130 to become too high, ultimately leading to a decrease in the performance of the optical engine, a reduction in brightness, and an impact on the user experience.

[0027] The heat dissipation principle of the heat pipe is as follows: When one end of the heat pipe (evaporation end) absorbs heat, the liquid working fluid inside the heat pipe evaporates into a gaseous working fluid. The gaseous working fluid diffuses along the internal space of the heat pipe towards the cold end. During the diffusion process, heat is continuously conducted to the cold end. Simultaneously, due to the heat dissipation of the gaseous working fluid, its temperature drops, and it cools and transforms into a liquid working fluid. At this time, the liquid working fluid flows back to the hot end through the capillary structure of the inner wall of the heat pipe, eventually absorbing heat and evaporating again. This cycle continues. During the cycle, the heat pipe evenly distributes the heat from the hot end throughout the entire heat pipe, increasing the heat dissipation area and improving the heat dissipation capacity. Therefore, after the heat pipe is attached to the inside of the frame 110, due to the heat-spreading effect of the two heat pipes, the heat of the optical engine 130 is evenly distributed to the entire metal frame 110. Utilizing the entire front frame for heat dissipation can greatly improve the heat dissipation rate of the optical engine and prevent excessive heat from the optical engine, thus reducing its light efficiency.

[0028] The manufacturing process of a heat pipe is as follows: First, one end of a metal tube is completely sealed. Then, a capillary structure is applied to the inner wall of the metal tube, and the capillary structure is fixed to the inner wall of the metal tube using a welding process. Next, a liquid working fluid is filled into the metal tube, and after vacuuming, the end is sealed using a welding process. Finally, the metal tube is flattened and shaped to obtain the final heat pipe. To obtain better thermal conductivity and welding performance, copper is typically used as the metal, a capillary structure is typically made of capillary copper mesh, and water is typically used as the liquid working fluid.

[0029] Optionally, please refer to the following as well. Figure 2 and Figure 3 , Figure 3 yes Figure 2The schematic cross-sectional view along line AA in this embodiment shows that there are two heat pipes (heat-conducting elements 140), with the evaporation ends of the two heat pipes connected to the optical engine 130. The area of ​​the lens frame 110 where the optical engine is mounted is the evaporation end of the heat pipes. The hot ends (evaporation ends) of both heat pipes are simultaneously attached to the auxiliary heat-conducting element 150 (graphite or copper foil, etc.), and the other end of the auxiliary heat-conducting element 150 is attached to the optical engine 130, thereby simultaneously transferring the heat from the optical engine to the two heat pipes. The heat pipes can be bonded and fixed to the lens frame 110 and the auxiliary heat-conducting element 150 respectively using thermally conductive adhesive 101.

[0030] Please refer to the following: Figure 2 and Figure 4 , Figure 4 yes Figure 2 The embodiment shows a cross-sectional view along line BB, where the heat pipe extends along the frame 110 and is disposed along the edge of the waveguide lens 120. The heat pipe may be disposed between the waveguide lens 120 and the frame 110 in the thickness direction of the waveguide lens 120. The heat pipe and the frame 110 may be bonded and fixed together by thermally conductive adhesive 101, and the heat pipe and the waveguide lens 120 may be bonded together by optical adhesive layer 102.

[0031] Alternatively, please continue reading Figure 1 The smart glasses in this embodiment also include temples 160, which are connected to the frame 110 and used to fix the smart glasses 100 to the user's head. The temples 160 may contain components such as a battery, control circuit board, and speaker. Detailed structural features of these components are within the understanding of those skilled in the art and will not be described in detail here.

[0032] The smart glasses provided in this application embodiment utilize heat-conducting components to transfer the heat of the optical engine to other areas of the frame, thereby increasing the heat dissipation area and improving heat dissipation efficiency. This minimizes the heat of the optical engine, prevents performance degradation, significantly improves the color uniformity and saturation of the output light signal, and greatly enhances the user experience. Furthermore, it significantly reduces the surface temperature near the optical engine frame, preventing excessively high local temperatures on the outer surface of the frame and avoiding burns or discomfort for the user.

[0033] Please see Figure 5 , Figure 5This is a partial cross-sectional view of another embodiment of the smart glasses of this application. In this embodiment, the waveguide lens 120 includes a first lens 121 and a second lens 122 stacked together. A heat-conducting element 140 is disposed between the second lens 122 and the frame 110 in the thickness direction of the waveguide lens 120. The heat-conducting element 140 and the frame 110 can be bonded together by thermally conductive adhesive 101. The heat-conducting element 140 and the second lens 122, as well as the second lens 122 and the first lens 121, can be bonded together by optical adhesive layers 102.

[0034] Please see Figure 6 , Figure 6 This is a partial structural cross-sectional schematic diagram of another embodiment of the smart glasses of this application. Unlike the previous embodiment, the smart glasses in this embodiment also include a protective cover plate 123, which is disposed on the outer surface of the first lens 121 for protecting the first lens 121.

[0035] Please see Figure 7 , Figure 7 This is a partial cross-sectional view of another embodiment of the smart glasses of this application. In this embodiment, the waveguide lens 120 includes a first lens 121 and a second lens 122 stacked together. Optionally, in this embodiment, the area of ​​the second lens 122 is smaller than that of the first lens 121. A heat-conducting element 140 is disposed on the outer edge of the second lens 122, and the heat-conducting element 140 is disposed in the same layer as the second lens 122. Furthermore, the heat-conducting element 140 is stacked with the first lens 121 (and the protective cover plate 123) in the thickness direction of the first lens 121. The thickness of the heat-conducting element 140 is similar to that of the second lens 122. By disposing of the heat-conducting element 140 on the outer edge of the second lens 122 and disposing it in the same layer as the second lens 122, compared to… Figure 6 The structure described in this embodiment can reduce the overall thickness of the smart glasses.

[0036] In this embodiment, the waveguide lens structure employs a stacked arrangement of two waveguide sheets of different sizes. The inward dimension of the second lens 122 matches the width of the heat pipe to which it is attached. Therefore, when attaching the heat pipe and the waveguide lens, the heat pipe is attached to the second lens 122. To enhance the reliability of the attachment, thermally conductive adhesive 101 is used to attach the side of the second lens 122 to the side of the heat pipe. Compared to... Figure 6 In this embodiment, the thickness T1 is reduced to T2, which is equivalent to reducing the thickness of one heat pipe. By shrinking the second lens inward, the area of ​​the second lens is reduced, thus reducing the overall weight of the smart glasses, achieving a thinner and lighter design, and thereby improving the user experience.

[0037] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A type of smart glasses, characterized in that, The smart glasses include: Picture frames; Waveguide lens, connected to the lens frame; An optical engine is fixedly connected to the lens frame, and the optical signals emitted by the optical engine can be displayed through the waveguide lens. A heat-conducting component is disposed on the lens frame, one end of which is connected to the optical engine and is used to transfer the heat of the optical engine to an area of ​​the lens frame away from the installation position of the optical engine. The waveguide lens includes a first lens and a second lens stacked together. The area of ​​the second lens is smaller than that of the first lens. The heat-conducting element is disposed on the outer side of the second lens. The heat-conducting element is disposed in the same layer as the second lens, and the heat-conducting element is stacked with the first lens in the thickness direction of the first lens.

2. The smart glasses according to claim 1, characterized in that, The heat-conducting component is a heat pipe, and the evaporation end of the heat pipe is connected to the optomechanic.

3. The smart glasses according to claim 2, characterized in that, The evaporation end of the heat pipe is connected to the optomechanic via an auxiliary heat-conducting component.

4. The smart glasses according to claim 3, characterized in that, The auxiliary heat-conducting component includes any one of graphite sheets or metal films.

5. The smart glasses according to claim 2, characterized in that, The number of heat pipes is two, and the evaporation ends of the two heat pipes are respectively connected to the optomechanic.

6. The smart glasses according to claim 2, characterized in that, The heat pipe extends along the frame and is disposed along the edge of the waveguide lens.

7. The smart glasses according to claim 1, characterized in that, The frame is made of metal.

8. The smart glasses according to claim 1, characterized in that, The heat-conducting component is disposed between the waveguide lens and the lens frame in the thickness direction of the waveguide lens.

9. The smart glasses according to claim 1, characterized in that, The smart glasses also include temples, which are connected to the frame and used to fix the smart glasses to the user's head.

Images