AR glasses

Abstract

The utility model relates to the technical field of display equipment, and discloses AR (Augmented Reality) glasses, which comprise a frame, at least one waveguide sheet and at least one ray machine, the framework comprises a spectacle frame and two spectacle legs, and the two spectacle legs are respectively connected to two ends of the spectacle frame; the waveguide sheet is arranged on the mirror frame and comprises a coupling-in grating, a coupling-out grating and a heat dissipation mechanism; the ray machine is arranged on the frame, a light beam emitted from a light outlet of the ray machine is coupled into the waveguide sheet through the coupling-in grating, and a shell of the ray machine is in contact with the waveguide sheet. According to the AR glasses, the heat dissipation speed of the waveguide sheets can be increased, and a good heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of display equipment, and in particular to an AR glasses. Background Art

[0002] Micro LED is considered as a potential next-generation display technology, with advantages such as self-luminescence, high brightness, high color saturation, and long life. Currently, the shipment of Micro LED AR glasses has grown rapidly. However, AR glasses are small-sized, high-computing intelligent hardware, and their device and system heat dissipation problems are consistent, resulting in a poor wearing experience. Figure 1 As shown, the full-color optical machine 01 of AR glasses can be assembled by three Micro LED micro-displays 011, and the colors of the light beams emitted by the three micro-displays are red, green and blue respectively. When the optical machine is in high brightness state, the brightness of the green light micro-display can reach millions of nits, and the red light micro-display itself has low luminous efficiency, with an external quantum efficiency EQE <10%, which will generate a lot of heat. The backplane temperature of the red screen that is lit for a long time can exceed 70°C after measurement. Excessive temperature brings a bad experience to the wearer. In the prior art, the heat dissipation method of the optical machine is generally to add a wide and thick copper backplane behind each micro-display, which will result in a larger mass and volume of the whole machine. Utility Model Content

[0003] The utility model provides an AR glasses, which can accelerate the heat dissipation speed of the waveguide plate and achieve a good heat dissipation effect.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] An AR glasses, comprising a frame, at least one waveguide and at least one optical machine;

[0006] The frame comprises a mirror frame and two temples, wherein the two temples are respectively connected to two ends of the mirror frame;

[0007] The waveguide plate is arranged on the mirror frame, and the waveguide plate comprises an in-coupling grating, an out-coupling grating and a heat dissipation mechanism;

[0008] The optical engine is arranged on the frame, the light beam emitted from the light outlet of the optical engine is coupled into the waveguide plate by the coupling grating, and the housing of the optical engine is in contact with the waveguide plate.

[0009] Optionally, the heat dissipation mechanism comprises a heat dissipation grating, the heat dissipation grating is arranged on the waveguide sheet and is configured to be light-permeable, and the heat dissipation grating is used to increase the heat dissipation area;

[0010] The heat dissipation grating is located on a side of the waveguide plate facing toward human eyes, or the heat dissipation grating is located on a side of the waveguide plate facing away from human eyes.

[0011] Optionally, the waveguide plate comprises a substrate, an incoupling grating, an outcoupling grating and a heat dissipation grating, and the incoupling grating, the outcoupling grating and the heat dissipation grating are arranged on the substrate;

[0012] The orthographic projection of the heat dissipation grating on the substrate does not overlap with the orthographic projection of the coupling grating on the substrate;

[0013] The orthographic projection of the heat dissipation grating on the substrate does not overlap with the orthographic projection of the outcoupling grating on the substrate.

[0014] Optionally, the heat dissipation mechanism includes an edge sealing structure, the edge sealing structure is arranged around the edge of the waveguide sheet, and the material of the edge sealing structure is a thermal conductive material.

[0015] Optionally, the outer side of the edge sealing structure has a plurality of heat dissipation grooves, the plurality of heat dissipation grooves are arranged around the waveguide plate, and the heat dissipation grooves are used to increase the heat dissipation area.

[0016] Optionally, the outer side of the housing of the optical machine has a heat-conducting film layer, and the heat-conducting film layer is in contact with the waveguide plate and the inner wall of the frame.

[0017] Optionally, the frame has a first accommodating cavity, the temple has a second accommodating cavity, and the first accommodating cavity of the frame is connected to the second accommodating cavity of the temple;

[0018] The optical engine is located at the connection between the first accommodating cavity and the second accommodating cavity, or the optical engine is located in the first accommodating cavity.

[0019] Optionally, the outer wall of the frame and / or the temple is provided with at least one heat dissipation hole, and the heat dissipation hole is used to speed up the exchange speed of air inside and outside the frame. The heat dissipation hole is arranged relative to the optical machine along a first direction, and the first direction is the extension direction of the heat dissipation hole.

[0020] Optionally, the frame and the temples are made of heat dissipation material, and the outer sides of the frame and the temples have heat dissipation film layers.

[0021] Optionally, it further includes a main control circuit board, a driving integrated circuit module, a battery, a touch circuit module, a speaker and a camera module, wherein the main control circuit board, the driving integrated circuit module, the battery, the touch circuit module, the speaker and the camera module are arranged in the frame;

[0022] The main control circuit board is connected to the driving integrated circuit module, the touch circuit module, the speaker, and the camera module;

[0023] The driving integrated circuit module is connected to the optical machine and is used to drive the optical machine to display images;

[0024] The battery is connected to the main control circuit board and is used to supply power to the main control circuit board.

[0025] The utility model provides an AR glasses, which include a frame, at least one waveguide plate and at least one optical machine. The waveguide plate is arranged on the frame of the frame, the waveguide plate includes a coupling-in grating, a coupling-out grating and a heat dissipation mechanism, the optical machine is arranged on the frame, and the light beam emitted by the optical machine can be coupled into the waveguide plate by the coupling-in grating, and is totally reflected in the waveguide plate, and then coupled out of the waveguide plate by the coupling-out grating, and finally enters the human eye, so that the user observes the picture emitted by the optical machine. Since the shell of the optical machine can contact the waveguide plate, the heat emitted by the optical machine can be conducted to the waveguide plate, and the heat is dissipated through the waveguide plate, and the heat dissipation mechanism on the waveguide plate can accelerate the heat dissipation speed of the waveguide plate, play a good heat dissipation effect, and avoid the heat generated by the optical machine from being concentrated on the frame. Compared with the prior art, the thickness of the copper back plate behind the micro display screen in the optical machine can be reduced, the mass and volume of the whole machine can be reduced, and the user experience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an optical machine in the prior art;

[0027] Figure 2 A schematic diagram of the structure of an AR glasses provided by an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the structure of an AR glasses provided by an embodiment of the utility model;

[0029] Figure 4 A cross-sectional view of a waveguide sheet provided in an embodiment of the utility model;

[0030] Figure 5 A schematic diagram of the structure of an AR glasses provided by an embodiment of the utility model;

[0031] Figure 6 A schematic diagram of the structure of a waveguide sheet provided in an embodiment of the utility model;

[0032] Figure 7 A schematic diagram of the structure of a waveguide sheet provided in an embodiment of the utility model;

[0033] Figure 8 A schematic diagram of the structure of a waveguide sheet provided in an embodiment of the utility model;

[0034] Fig. 9 A schematic diagram of the structure of a wafer provided by an embodiment of the utility model;

[0035] Fig.10 A schematic diagram of the structure of a waveguide sheet provided in an embodiment of the utility model;

[0036] Fig.11 A schematic structural diagram of a wafer provided by an embodiment of the utility model;

[0037] Fig.12 A schematic diagram of the structure of a waveguide sheet provided in an embodiment of the utility model;

[0038] Fig.13 A schematic diagram of the structure of a waveguide sheet provided in an embodiment of the utility model;

[0039] Fig.14 A schematic diagram of the structure of an optical machine provided by an embodiment of the utility model;

[0040] Fig.15 A schematic diagram of the structure of a temple provided by an embodiment of the utility model;

[0041] Fig.16 It is a structural schematic diagram of an AR glasses in the related technology.

[0042] icon:

[0043] 1-frame; 11-frame; 12-template; 2-waveguide; 20-substrate; 21-coupling grating; 22-coupling grating; 23-heat dissipation mechanism; 231-heat dissipation grating; 232-edge sealing structure; 2321-heat dissipation groove; 24-turning grating; 3-optical machine; 31-thermal conductive film layer; 4-driving integrated circuit module; 5-camera module; 6-speaker; 7-touch circuit module; 8-battery; 9-nose pad. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] Please refer to Figures 2 to 3 , the utility model provides an AR glasses, including a frame 1, at least one waveguide plate 2 and at least one optical machine 3;

[0046] The frame 1 includes a mirror frame 11 and two mirror legs 12, and the two mirror legs 12 are respectively connected to the two ends of the mirror frame 11;

[0047] The waveguide plate 2 is disposed on the mirror frame 11, and the waveguide plate 2 includes an in-coupling grating 21, an out-coupling grating 22 and a heat dissipation mechanism 23;

[0048] The optical engine 3 is disposed on the frame 1 , and the light beam emitted from the light outlet of the optical engine 3 is coupled into the waveguide plate 2 by the coupling grating 21 , and the housing of the optical engine 3 is in contact with the waveguide plate 2 .

[0049] The AR glasses provided by the embodiment of the utility model include a frame 1, at least one waveguide plate 2 and at least one optical machine 3. At least one waveguide plate 2 is arranged on the frame 11 of the frame. The waveguide plate 2 includes a coupling grating 21, a coupling grating 22 and a heat dissipation mechanism 23. The optical machine 3 is arranged on the frame 1. The light beam emitted by the optical machine 3 can be coupled into the corresponding waveguide plate 2 by the coupling grating 21, and is totally reflected in the waveguide plate 2. Then, it is coupled out of the waveguide plate 2 by the coupling grating 22, and finally enters the human eye, so that the user observes the picture emitted by the optical machine 3. Since the shell of the optical machine 3 can contact the corresponding waveguide plate 2, the heat emitted by the optical machine 3 can be conducted to the waveguide plate 2 and dissipated through the waveguide plate 2. The heat dissipation mechanism 23 on the waveguide plate 2 can accelerate the heat dissipation speed of the waveguide plate, achieve a good heat dissipation effect, and avoid the heat generated by the optical machine 3 from being concentrated on the frame 1. Compared with the prior art, the thickness of the copper back plate behind the micro display screen in the optical machine 3 can be reduced, the weight and volume of the whole machine can be reduced, and the user experience can be improved.

[0050] In the embodiment of the utility model, the AR glasses may include at least two lenses and at least one optical machine. For example, in the AR glasses, the two lenses may be arranged on the frame 11 along the arrangement direction of the two temples 12; wherein one lens may be a waveguide plate 2, and the other lens may be an ordinary light-transmitting lens; or Figure 2 and Figure 3 As shown, both lenses can be waveguide plates 2, so that both eyes of the user can see the images projected by the optical machine.

[0051] In the above-mentioned AR glasses, the number of optical machines 3 can be the same as the number of waveguide plates 2, and the optical machines 3 and the waveguide plates 2 are arranged in a one-to-one correspondence; or the number of optical machines 3 can be different from the number of waveguide plates 2, and the same optical machine 3 can be arranged corresponding to two waveguide plates 2, that is, the picture displayed by one optical machine 3 can be projected onto two waveguide plates 2 at the same time.

[0052] In the embodiment of the utility model, the optical machine 3 can be a monochrome optical machine 3 or a full-color optical machine 3, which is not limited here and depends on the actual situation. The Micro LED micro display screen in the optical machine 3 can be assembled inside the housing.

[0053] In the embodiment of the utility model, the optical engine 3 can be located inside the frame 1, so that the optical engine 4 is hidden inside the frame 1, thereby improving the appearance of the glasses; wherein the frame 11 can have a first accommodating cavity, the temple 12 can have a second accommodating cavity, and the first accommodating cavity of the frame 11 is connected to the second accommodating cavity of the temple 12, such as Figure 2 As shown, the optical engine 3 can be located at the connection between the first accommodating cavity and the second accommodating cavity, and the light beam emitted by the optical engine 3 can be projected from one side of the waveguide plate 2 into the coupling grating 21; or Figure 3 As shown, the optical engine 3 can be located in the first accommodating cavity, and the light beam emitted by the optical engine 3 can be projected from the top of the waveguide plate 2 into the coupling grating 21, and the light beam of the optical engine 3 can be injected into the coupling grating 21 through the optical coupling component.

[0054] In the embodiment of the utility model, Figure 2 and Figure 3 As shown, the heat dissipation mechanism 23 may include a heat dissipation grating 231, which is disposed on the waveguide plate 2 and configured to be light-permeable. The heat dissipation grating 231 can greatly increase the heat dissipation area of ​​the waveguide plate 2 and achieve rapid heat dissipation.

[0055] Specifically, the heat dissipation grating 231 can be located on the side of the waveguide plate 2 facing the human eye; or, the heat dissipation grating 231 can also be located on the side of the waveguide plate 2 facing away from the human eye. The position of the heat dissipation grating 231 is not limited here and depends on actual conditions.

[0056] Specifically, Figure 4 As shown, the waveguide plate 2 may include a substrate 20 and a coupling-in grating 21, a coupling-out grating 22 and a heat dissipation grating 231 located on the substrate 20. The coupling-in grating 21 and the coupling-out grating 22 are located on the side of the substrate 20 facing the human eye, so that the image displayed by the optical machine 3 can be projected into the human eye. The heat dissipation grating 231 can be on the same side as the coupling-in grating 21 and the coupling-out grating 22, or on a different side from the coupling-in grating 21 and the coupling-out grating 22.

[0057] Specifically, the material of the substrate 20 can be glass, resin, etc., and the material of the heat dissipation grating 23 can be transparent epoxy resin adhesive, etc. The thickness of the heat dissipation grating 231 can be 1nm to 100μm. In the process of manufacturing the waveguide sheet 2, the heat dissipation grating 231 can be manufactured by nanoimprinting process to form a micro-nano structure with heat conduction function.

[0058] In the embodiment of the utility model, the orthographic projection of the heat dissipation grating 231 on the substrate 20 may not overlap with the orthographic projection of the coupling-in grating 21 on the substrate 20; the orthographic projection of the heat dissipation grating 231 on the substrate 20 may not overlap with the orthographic projection of the coupling-out grating 22 on the substrate 20, so as to avoid the heat dissipation grating 231 from affecting the image of the coupling-in waveguide plate 2.

[0059] The number of the heat dissipation gratings 231 on the waveguide plate 2 can be at least one, which is not limited here and can be set according to actual conditions; by increasing the number of heat dissipation gratings 231, the heat dissipation surface area of ​​the waveguide plate 2 can be increased, greatly improving the heat dissipation effect. For example, Figure 2 A heat dissipation grating 231 is provided on the middle waveguide plate 2. Figure 3 Two heat dissipation gratings 231 are arranged on the middle waveguide plate 2 .

[0060] Specifically, Figure 5 As shown, the waveguide plate 2 may further include a turning grating 24 disposed on the substrate 20, and the coupling-in grating 21, the coupling-out grating 22 and the turning grating 24 are located on a side of the waveguide plate 2 facing the user's eyes.

[0061] Among them, the light emitted by the optical machine 3 can enter the waveguide 2 through the coupling-in grating 21, and then be incident on the turning grating 24 through total reflection. Part of the light will be turned to the coupling-out grating 22, and the remaining light will continue to propagate forward through reflection, and then be incident on the turning grating 24 again. At this time, part of the light will be turned to the coupling-out grating 22, and this process will be repeated. After the light path of the light incident into the waveguide 2 is turned by the turning grating 24, all of it is coupled out of the waveguide 2 from the coupling-out grating 22, and then enters the user's eyes, so that the user can see the image.

[0062] In the embodiment of the utility model, Figure 6 and Figure 7 As shown, the heat dissipation mechanism 23 may also include an edge sealing structure 232, which is arranged around the edge of the waveguide sheet 2, and the material of the edge sealing structure 232 is a thermal conductive material. Since the housing of the optical engine 3 is in contact with the waveguide sheet 2, the heat generated by the optical engine 3 when working can be conducted to the waveguide sheet 2, and the edge sealing structure 232 at the edge of the waveguide sheet 2 can accelerate the heat dissipation on the waveguide sheet 2 to achieve efficient heat dissipation.

[0063] Specifically, the edge sealing structure 232 may be disposed on the substrate 20 of the waveguide sheet 2 to achieve edge sealing of the substrate 20 .

[0064] Specifically, the material of the edge sealing structure 232 can be graphene, nano-carbon copper film, thermal conductive glue or silicone grease, etc., or other thermal conductive materials, which are not limited here and depend on actual conditions.

[0065] In the embodiment of the utility model, Figure 8 As shown, the outer side of the edge sealing structure 232 may have a plurality of heat dissipation materials 2321, and a plurality of heat dissipation grooves 2321 are arranged around the waveguide sheet 2. The heat dissipation grooves 2321 can increase the heat dissipation specific surface area of ​​the waveguide sheet 2, accelerate the heat dissipation speed of the edge of the waveguide sheet 2, and thus improve the heat dissipation effect of the whole device.

[0066] Specifically, the edge of the waveguide plate 2 can be coated with ink before the edge sealing structure 232 is formed, that is, a light-shielding ink layer is formed on the edge of the waveguide plate 2, which can prevent stray light from entering the waveguide plate 2, avoid affecting the display effect of the glasses, and improve the user experience.

[0067] In the embodiment of the utility model, the heat dissipation mechanism 23 may include only the heat dissipation grating 231, or only the edge sealing structure 232, or the heat dissipation mechanism 23 includes both the heat dissipation grating 231 and the edge sealing structure 232. The specific structure of the heat dissipation mechanism 23 is not limited here and depends on the actual situation.

[0068] For example, in the actual manufacturing process of the waveguide plate 2, firstly, a plurality of groups of grating patterns B on the waveguide plate 2 can be formed on a whole wafer A, such as Fig. 9 As shown, the pattern of the grating here may include a group of coupling-in gratings 21, coupling-out gratings 22, heat dissipation gratings 231, or a group of coupling-in gratings 21, coupling-out gratings 22, heat dissipation gratings 231 and turning gratings 24; then, the whole wafer is cut to form a single waveguide sheet 2, as shown in FIG. Fig.10 Then, the edge of each single waveguide plate 2 can be sealed to form an edge sealing structure 232, such as Figure 7 shown.

[0069] In addition, the waveguide plate 2 may be provided with an edge sealing structure 232 instead of a heat dissipation grating 231. In this structure, the actual manufacturing process of the waveguide plate 2 is to first form multiple groups of grating patterns B1 on the waveguide plate 2 on a whole wafer A1, such as Fig.11 As shown, the pattern of a group of gratings here may include a group of coupling-in gratings 21, coupling-out gratings 22, or a group of coupling-in gratings 21, coupling-out gratings 22 and turning gratings 24; then, the whole wafer is cut to form a single waveguide 2, as shown in FIG. Fig.12 Then, the edge of each single waveguide plate 2 can be sealed to form an edge sealing structure 232, such as Fig.13 shown.

[0070] In the embodiment of the utility model, Fig.14 As shown, the outer side of the housing of the optical engine 3 may have a heat-conducting film layer 31, and the heat-conducting film layer 31 may contact the inner wall of the waveguide sheet 2 and the frame 1, so as to increase the contact area between the optical engine 3 and the waveguide sheet 2. The heat generated by the optical engine 3 may be conducted to the waveguide sheet 2 through the heat-conducting film layer 31, and the heat dissipation area may be increased through the heat dissipation mechanism 23 on the waveguide sheet 2, thereby accelerating the heat dissipation speed and achieving efficient heat dissipation.

[0071] Specifically, the thermal conductive film layer 31 can be formed by coating a thermal conductive material, and the material of the thermal conductive film layer 31 can be graphene, nano-carbon copper film, thermal conductive glue or silicone grease, or other thermal conductive materials, which are not limited here and are determined according to actual conditions.

[0072] In an embodiment of the utility model, at least one heat dissipation through hole is provided on the outer wall of the frame 2 and / or the temple 11, and the heat dissipation through hole is arranged relative to the optical machine along a first direction, and the first direction is the extension direction of the heat dissipation through hole. The heat dissipation through hole can enable the outside air to exchange heat with the air in the frame 1, thereby realizing rapid heat dissipation of the heat generated by the optical machine 3 and improving the user experience.

[0073] Specifically, Figure 2 As shown, the optical engine 3 can be located at the connection between the second accommodating cavity of the temple 12 and the first accommodating cavity of the frame 11, and the connection between the temple 12 and the frame 11 has a heat dissipation through hole, which can dissipate the heat of the cavity where the optical engine 3 is located.

[0074] Or, if Figure 3 As shown, the optical engine 3 may also be located in the first accommodating cavity of the lens frame 11, and the outer wall of the lens frame 11 and the area corresponding to the optical engine 3 may have heat dissipation through holes, which can dissipate heat from the cavity where the optical engine 3 is located.

[0075] In the embodiment of the utility model, the material of the frame 11 and the temples 12 can be a heat dissipation material, and the outer sides of the frame 11 and the temples 12 can have a heat dissipation film layer 101. Fig.15 Shown is a schematic structural diagram of a temple 12 in an embodiment of the utility model.

[0076] The frame 11 and the temples 12 may be made of lightweight materials such as resin and plastic, which can reduce the overall weight of the glasses and enhance the user experience.

[0077] Specifically, the entire frame 11 and the temples 12 can be connected through the heat dissipation film layer 101 to achieve heat dissipation of the entire structure. The material of the heat dissipation film layer can be a high heat dissipation material such as graphene material, carbon nanotube, or other materials, which are not limited here and are determined according to actual conditions.

[0078] Specifically, the inner wall of the temple 12 may be designed with a honeycomb pattern, which can increase the heat dissipation area and improve the heat dissipation effect.

[0079] In the embodiment of the utility model, Figure 2 and Figure 3 As shown, the AR glasses may also include a main control circuit board, a driver integrated circuit module (driver IC module) 4, a battery 8, a touch circuit module 7, a speaker 6 and a camera module 5;

[0080] Among them, the main control circuit board 4 is connected to the driving integrated circuit module 4, the touch circuit module 7, the speaker 6, and the camera module 5; the driving integrated circuit module 4 is connected to the optical machine 1, and is used to drive the optical machine 1 to display the picture; the battery 8 is connected to the main control circuit board, and is used to power the main control circuit board. The main control circuit board can control the battery to power the driving integrated circuit module (driving IC module) 4, the battery 8, the touch circuit module 7, the speaker 6, the camera module 5 and the optical machine 1.

[0081] Specifically, the main control circuit board, the driving integrated circuit, the battery, the touch circuit module, the speaker and the camera module are arranged in the frame, so that the components are hidden in the frame, ensuring the aesthetic appearance of the AR glasses. Figure 2 and Figure 3 As shown, the driving integrated circuit module 4 and the battery 8 are located in the second accommodating cavity of the left temple 12, the touch circuit module 7 and the speaker 6 are located in the second accommodating cavity of the right temple 12, and the camera module 5 is located in the frame 1.

[0082] Optionally, the specific positions of the main control circuit board, the driving integrated circuit, the battery, the touch circuit module, the speaker and the camera module may also be arranged in other ways, which are not limited here and depend on actual conditions.

[0083] Among them, the driving integrated circuit module 4 can be connected to the optical machine 3 through a flexible circuit board, and the flexible circuit board can be routed inside the frame 1, which can realize the beautiful appearance design of the AR glasses and improve the user experience.

[0084] The camera module 5 can be connected to the main control circuit board through a flexible circuit board, and the flexible circuit board is routed inside the frame. The main functions of the camera module 5 can be three aspects: one is to provide image acquisition based on vision-based tracking and positioning, the second is to perform interactive gesture recognition, and the third is daily photo taking and video recording.

[0085] The speaker 6 can be connected to the main control circuit board through a wire, and the state of the speaker 6 is controlled by the main control circuit board. The speaker 6 can play sound to enhance the user experience.

[0086] The touch circuit module 7 is connected to the main control circuit board through a flexible circuit board. The surface of the temple 12 can expose the touch panel of the touch circuit module 7. The touch panel can be used to control functions such as the volume of the speaker 6 and the brightness of the light of the optical machine 3, which facilitates user operation and improves user experience.

[0087] like Fig.16 As shown, it is a structural schematic diagram of an AR glasses in the related technology. The optical engine, driving integrated circuit module, camera module, touch circuit module, speaker, battery and other devices in the AR glasses are all heat sources.

[0088] In the AR glasses provided in the embodiment of the utility model, Figure 2 and Figure 3 As shown, the heat generated by the optical machine 3, the main control circuit board, the driving integrated circuit module 4, the camera module 5, the touch circuit module 7, the speaker 6 and the battery 8 can be dissipated through the frame 11 and the temples 12. The heat dissipation film layer 101 of the frame 11 and the temples 12 can connect the entire frame 11 and the temples 12, and can achieve heat dissipation of the driving integrated circuit module (driving IC module) 4, the battery 8, the touch circuit module 7, the speaker 6, the camera module 5 and the optical machine 1, and achieve heat dissipation of the overall structure.

[0089] Furthermore, since the heat dissipation film layer 101 connects the frame 11 and the temples 12 of the entire frame, the waveguide 2 is arranged on the frame 11, and the waveguide 2 can also dissipate the heat on the frame 1 through the heat dissipation mechanism 3, thereby dissipating the heat generated by components such as the main control circuit board, the driving integrated circuit 4, the camera module 5, the touch circuit module 7, the speaker 6, and the battery 8, thereby improving the heat dissipation efficiency, achieving efficient heat dissipation, reducing the thermal power consumption of the glasses, and enhancing the user's good wearing experience.

[0090] In the embodiment of the utility model, the AR glasses may further include a nose pad 9 located between the two waveguide sheets 2. The material of the nose pad 9 may be a soft insulating material to improve the user experience. The nose pad 9 is arranged on the frame 11, or may be directly connected to the two waveguide sheets 2. There is no limitation here, and it depends on the actual situation.

[0091] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An AR glasses, characterized in that: comprising a frame, at least one waveguide and at least one optical machine; The frame comprises a mirror frame and two temples, wherein the two temples are respectively connected to two ends of the mirror frame; The waveguide plate is arranged on the mirror frame, and the waveguide plate comprises an in-coupling grating, an out-coupling grating and a heat dissipation mechanism; The optical engine is arranged on the frame, the light beam emitted from the light outlet of the optical engine is coupled into the waveguide plate by the coupling grating, and the housing of the optical engine is in contact with the waveguide plate.

2. The AR glasses according to claim 1, characterized in that: The heat dissipation mechanism comprises a heat dissipation grating, which is arranged on the waveguide sheet and configured to allow light to pass through, and is used to increase the heat dissipation area; The heat dissipation grating is located on a side of the waveguide plate facing toward human eyes, or the heat dissipation grating is located on a side of the waveguide plate facing away from human eyes.

3. The AR glasses according to claim 2, characterized in that: The waveguide plate comprises a substrate, an in-coupling grating, an out-coupling grating and a heat dissipation grating, wherein the in-coupling grating, the out-coupling grating and the heat dissipation grating are arranged on the substrate; The orthographic projection of the heat dissipation grating on the substrate does not overlap with the orthographic projection of the coupling grating on the substrate; The orthographic projection of the heat dissipation grating on the substrate does not overlap with the orthographic projection of the outcoupling grating on the substrate.

4. The AR glasses according to any one of claims 1 to 3, characterized in that: The heat dissipation mechanism comprises an edge sealing structure, the edge sealing structure is arranged around the edge of the waveguide sheet, and the material of the edge sealing structure is a heat conductive material.

5. The AR glasses according to claim 4, characterized in that: The outer side of the edge sealing structure is provided with a plurality of heat dissipation grooves, the plurality of heat dissipation grooves are arranged around the waveguide plate, and the heat dissipation grooves are used to increase the heat dissipation area.

6. The AR glasses according to claim 1, characterized in that: The outer side of the housing of the optical machine is provided with a heat-conducting film layer, and the heat-conducting film layer is in contact with the waveguide plate and the inner wall of the frame.

7. The AR glasses according to claim 1, characterized in that: The frame has a first accommodating cavity, the temple has a second accommodating cavity, and the first accommodating cavity of the frame is connected to the second accommodating cavity of the temple; The optical engine is located at the connection between the first accommodating cavity and the second accommodating cavity, or the optical engine is located in the first accommodating cavity.

8. The AR glasses according to claim 7, characterized in that: The outer wall of the frame and / or the temple is provided with at least one heat dissipation hole, and the heat dissipation hole is used to speed up the exchange speed of air inside and outside the frame. The heat dissipation hole is arranged relative to the optical machine along a first direction, and the first direction is the extension direction of the heat dissipation hole.

9. The AR glasses according to claim 7, characterized in that: The frame and the temples are made of heat dissipation material, and the outer sides of the frame and the temples are provided with heat dissipation film layers.

10. The AR glasses according to claim 9, characterized in that: It also includes a main control circuit board, a driving integrated circuit module, a battery, a touch circuit module, a speaker and a camera module, wherein the main control circuit board, the driving integrated circuit module, the battery, the touch circuit module, the speaker and the camera module are arranged in the frame; The main control circuit board is connected to the driving integrated circuit module, the touch circuit module, the speaker, and the camera module; The driving integrated circuit module is connected to the optical machine and is used to drive the optical machine to display images; The battery is connected to the main control circuit board and is used to supply power to the main control circuit board.

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