Augmented reality glasses and method for displaying image by using augmented reality glasses

Abstract

The invention provides augmented reality glasses and a method for displaying an image by using the augmented reality glasses. The augmented reality glasses comprise a glasses frame, a nose supporting part, an optical engine module and a light path guiding assembly, the glasses frame is configured to be worn on the head of a user, the nose supporting part is arranged in the central area of the glasses frame, and the optical engine module is arranged on the glasses frame and configured to emit image light. The light path guiding assembly is configured to guide image light from the optical engine module to eyes of a user, the light path guiding assembly comprises a first light path folding element and a second light path folding element, the first light path folding element is arranged on the nose supporting part and is configured to receive the image light from the optical engine module, and the second light path folding element is arranged on the nose supporting part and is configured to fold the image light from the optical engine module. And the image light is far away from the nose supporting part and is reflected to a second light path folding element arranged on the glasses frame. Therefore, the brightness and the contrast ratio of the virtual image can be improved, and the field angle can be enlarged.

Description

Technical Field

[0001] This disclosure relates to the field of augmented reality technology, and more specifically, to augmented reality glasses and a method for displaying images using augmented reality glasses. Background Technology

[0002] Augmented Reality (AR) glasses use lenses or projection technology to overlay computer-generated virtual information (such as images, text, and 3D models) onto the real world view of the user, thereby providing a richer visual experience.

[0003] In related technologies, AR glasses include a micro-display module for emitting image light and a waveguide for guiding the image light into the human eye.

[0004] However, most waveguide-based lenses are typically thicker, and there is significant energy loss during light transmission and coupling within the waveguide, resulting in lower overall luminous efficiency and impacting the visual experience. Summary of the Invention

[0005] This section provides a general overview of this disclosure, rather than a full disclosure of the entire scope or all features of this disclosure.

[0006] In a first aspect, this disclosure provides augmented reality glasses. The augmented reality glasses include a frame, a nose support, an optical engine module, and a light path guiding assembly. The frame is configured to be worn on a user's head. The nose support is located in the central region of the frame. The optical engine module is located on the frame and configured to emit image light. The light path guiding assembly is configured to guide the image light from the optical engine module to the user's eyes. The light path guiding assembly includes a first light path folding element and a second light path folding element. The first light path folding element is located on the nose support and configured to receive the image light from the optical engine module and reflect the image light away from the nose support to the second light path folding element located on the frame.

[0007] In a second aspect, this disclosure provides a method for displaying an image using augmented reality glasses. The method includes emitting image light through an optical engine module located at the frame of the augmented reality glasses;

[0008] Project the image light onto the nose support located in the central area of ​​the frame; The image light is received by a first optical path folding element located at the nose support, and the image light is reflected away from the nose support to a second optical path folding element located in the frame; and The image light is reflected by a second optical path folding element so that it is guided into the user's eye via the optical path. Attached Figure Description

[0009] The features and advantages of embodiments of the present disclosure will become more readily understood from the following description with reference to the accompanying drawings. The drawings are not drawn to scale and some features may be enlarged or reduced to show details of specific components. In the drawings: Figure 1 This is a three-dimensional structural diagram of augmented reality glasses according to an embodiment of the present disclosure.

[0010] Figure 2 for Figure 1 The image shows a front view of the augmented reality glasses.

[0011] Figure 3 for Figure 1 The diagram shows the optical path principle of the optical path guiding component of the augmented reality glasses.

[0012] Figure 4 for Figure 1 The diagram shows another angle of the stereoscopic structure of the augmented reality glasses.

[0013] Figure 5 for Figure 1 The image shows a top view of the augmented reality glasses.

[0014] Figure 6 for Figure 1 The diagram shows the control block diagram for augmented reality glasses.

[0015] Figure 7 for Figure 1 The diagram shows another angle of the three-dimensional structure of the augmented reality glasses.

[0016] Figure 8 This is a flowchart of a method for displaying images using augmented reality glasses according to an embodiment of the present disclosure.

[0017] In the accompanying drawings, the same or corresponding technical features or components are represented by the same or corresponding reference numerals. Detailed Implementation

[0018] The technical solutions in this disclosure will now be clearly and completely described with reference to the accompanying drawings.

[0019] It should be noted that, for clarity, not all features of a particular embodiment are described or shown in the specification and drawings. Furthermore, to avoid unnecessary details obscuring the technical solutions of interest in this disclosure, only the device structure closely related to the technical solutions of this disclosure is described and shown in the specification and drawings, while other details that are not closely related to the technical content of this disclosure and are known to those skilled in the art are omitted.

[0020] First, before detailing the specific structure of this application, the technical problem to be solved by this application will be elaborated in depth.

[0021] As previously mentioned, the relevant technology uses waveguides to guide image light into the human eye. Specifically, an image light beam emitted from a microdisplay module is coupled into a waveguide sheet via a coupling structure (e.g., an input grating). The light propagates within the waveguide sheet, and when it reaches the pupil expansion region (e.g., a folded grating or a partial reflection array), the beam undergoes diffraction or reflection. Some of the light energy changes its propagation direction and propagates towards the output region, while the remaining light energy continues to propagate along the original path. In this way, the original beam is expanded multiple times in space, forming a series of arranged beam arrays. Subsequently, this beam array interacts with the output structure (e.g., an output grating), thereby being coupled out of the waveguide and into the human eye.

[0022] To ensure uniform brightness of the emitted light in the exit pupil region, systems are typically configured to have lower diffraction efficiency (i.e., less light energy coupled out) near the light source and higher diffraction efficiency further away. This results in a significant amount of light energy not being effectively utilized at the propagation end, or being lost along the propagation path to achieve uniformity, leading to low overall light energy utilization. Ultimately, less light actually enters the human eye, resulting in insufficient brightness and low contrast in the virtual image compared to the brighter real-world environment, thus negatively impacting the visual experience.

[0023] To solve this problem, one could imagine using an optical engine to directly reflect light into the human eye. However, while this solution avoids the low light efficiency of waveguides, the field of view presented to the human eye is narrow, directly limited by the field of view of the optical engine itself, and cannot provide a wide field of view, making it difficult to meet the user's immersive experience needs.

[0024] In addition, it is conceivable to improve display contrast by setting AR glasses to cover the eyes, but this would cause the AR glasses to create a strong feeling of stuffiness around the eyes, seriously affecting wearing comfort.

[0025] Therefore, there is a need to develop AR glasses that can avoid the low light efficiency of waveguide solutions, overcome the small field of view limitation of direct reflection solutions, and also take into account wearing comfort.

[0026] Therefore, according to embodiments of this disclosure, an augmented reality glasses 100 and a method for displaying images using augmented reality glasses are provided. Hereinafter, referring to... Figures 1 to 7 The augmented reality glasses 100 are described in detail.

[0027] First, refer to Figure 1 and Figure 2The augmented reality glasses 100 includes a frame 120, a nose support 140, an optical engine module 160, and an optical path guiding assembly 180. Exemplarily, the augmented reality glasses 100 may also include temples, a circuit board, a battery, interactive buttons, and other components (described in detail later), all of which are mounted or fixed to the frame 120.

[0028] like Figure 1 As shown, the frame 120 is configured to be worn on a user's head. Exemplarily, the frame 120 can be worn on the user's head via temples, a detachable strap, etc. Regular or prescription lenses can be installed on the frame 120 according to the user's needs (the frame area is mainly shown in the figure), and the frame 120 serves for the mounting and support of the entire eyeglass assembly.

[0029] A nose support 140 is located in the central area of ​​the frame 120. The nose support 140 is designed to contact the user's nose bridge and support the glasses 100 via the nose bridge.

[0030] Understandably, the frame 120 includes a left frame 122, a right frame 124, and a central bridge 126 connecting the left frame 122 and the right frame 124. The nose support 140 may be disposed between the left frame 122 and the right frame 124.

[0031] like Figure 2 As shown, the optical engine module 160 is disposed on the lens frame 120 and configured to emit image rays.

[0032] It should be noted that the optical engine module 160 belongs to the projection optics system in the micro-projection device. As the core imaging unit of the micro-projection device, it can generate and project image light carrying image information according to control signals. For example, the optical engine module 160 may include image generation modules such as a liquid crystal on silicon (LCOS) module, a digital light processing (DLP) module, or an organic light-emitting diode (OLED) module.

[0033] The optical engine module 160 can be disposed between the left frame 122, the right frame 124, or between the left frame 122 and the right frame 124, for example, in the center beam 126. In this embodiment, the optical engine module 160 is disposed in the center beam 126.

[0034] The optical path guiding component 180 is configured to guide image light from the optical engine module 160 to the user's eye. The optical path guiding component 180 may consist of multiple elements with reflection, refraction, or diffraction functions to guide image light from the emission source to the entrance pupil position of the human eye. Exemplarily, the optical path guiding component 180 may employ a plane mirror, a total internal reflection prism, etc.

[0035] Combined with reference Figures 1 to 3 The optical path guiding assembly 180 includes a first optical path folding element 182 and a second optical path folding element 184. The first optical path folding element 182 is disposed on the nose support portion 140 and configured to receive image light S from the optical engine module 160 (see Figure 3 The image light S is reflected away from the nose support 140 to the second optical path folding element 184 disposed on the frame 120.

[0036] It should be noted that an optical path folding element refers to an optical element that folds the optical path by changing the direction of light propagation, thereby achieving spatial compression.

[0037] This disclosure employs a reflection-based geometric optical guidance component. When image light propagates between the first and second optical path folding elements, the light is transmitted in full-aperture form without undergoing pupil dilation or beam splitting processes that induce high losses. This design maximizes the preservation of light energy emitted by the optical engine module, ensuring sufficient light enters the human eye. This allows for brighter, more contrasting virtual images with the same power consumption, effectively enhancing the visual experience of AR glasses in bright environments.

[0038] Furthermore, by designing at least two stages of optical path folding, the actual propagation distance of image light can be extended within the frame's internal space through multi-segment optical path routing, thus increasing the optical path length, without increasing the external physical dimensions of the frame. A longer optical path provides the optical system with greater magnification and design freedom, enabling the presentation of a wider-coverage virtual image in front of the viewer, expanding the field of view and enhancing the user's immersive experience.

[0039] Meanwhile, by utilizing the nose support area, which is usually considered a "dead space" in traditional eyeglass design, to set up the first optical path folding element, the first turning point of the optical path is placed at the geometric center of the eyeglasses. On the one hand, this avoids stacking large optical components on the sides of the frame or at the temples, thereby effectively shortening the thickness of the sides of the frame and achieving a thinner and lighter product. On the other hand, the centered nose layout is conducive to the complete symmetrical design of the left and right eye optical systems, reducing the complexity of the hardware layout for binocular image fusion and improving the balance of the wearing center of gravity. All of these factors enhance the wearing comfort.

[0040] In some implementations, such as Figure 2 and Figure 3 As shown, the optical path guiding assembly 180 also includes a third optical path folding element 186, which is disposed on the upper edge of the frame 120, and a second optical path folding element 184 is disposed on the outer edge of the frame 120. The second optical path folding element 184 is configured to reflect the image light S to the third optical path folding element 186, and the third optical path folding element 186 is configured to reflect the image light S to the user's eye 300.

[0041] By incorporating a third optical path folding element 186, the optical path length can be further increased to accommodate a wider field of view. Through three-stage folding, the long optical path optical system is hidden inside the nose support 140, the edge of the frame 120, and the upper bridge, achieving a thinner and lighter appearance for the glasses 100.

[0042] Specifically, such as Figure 3 As shown in the optical path diagram, this embodiment employs a three-reflection optical path design. The optical engine module 160 projects two beams of light, which are respectively projected onto the first optical path folding element 182 located on the left and right supports of the nose support 140. After the first reflection by the first optical path folding element 182, the light enters the second optical path folding element 184 mounted on the lens frame 120, which is located on the outermost side of the lens frame 120. The second optical path folding element 184 performs a second reflection, reflecting the light onto the third optical path folding element 186 mounted on the upper edge of the lens frame 120. After the third optical path folding element 186 performs a third reflection, the field of view is magnified, and finally, the light enters the human eye for clear imaging. It should be noted that the above-mentioned optical path folding element is a reflector. Depending on the final imaging quality requirements, the reflector can be a spherical mirror, an aspherical mirror, or other types of lenses.

[0043] It is conceivable that the second optical path folding element 184 and the third optical path folding element 186 can be disposed on the inner or outer peripheral edge of the frame 120. For example, the second optical path folding element 184 and the third optical path folding element 186 can be fixed to the frame 120 by adhesive.

[0044] In some implementations, such as Figure 1 As shown, the frame 120 is provided with a through hole 120a, through which image light reflected by the first optical path folding element 182 passes to be incident on the second optical path folding element 184.

[0045] By setting a through hole 120a on the frame 120, the optical path is ensured to be connected between the nose and the main body of the frame 120, thus avoiding the loss of field of vision caused by structural obstruction.

[0046] It is understandable that the via 120a is located on the path of the image light reflected from the first optical path folding element 182 to the second optical path folding element 184.

[0047] For example, the interior of the via 120a can be filled with a high-transmittance material such as resin or glass. This ensures the transmission efficiency of light after reflection by the first optical path folding element 182, while also providing dust and moisture protection.

[0048] In some implementations, such as Figure 2 As shown, the augmented reality glasses 100 also includes a first driving device 110, which is configured to drive a first optical path folding element 182 to rotate relative to the frame 120, thereby changing the reflection angle of image light through the first optical path folding element 182.

[0049] It should be noted that refractive adjustment is achieved by changing the distance between the object and the image on the optical axis or the angle of reflection, so that the imaging position is adapted to the wearer's visual condition (such as myopia or hyperopia).

[0050] By setting the first driving device 110, the first optical path folding element 182 can rotate relative to the frame 120 under the drive of the first driving device 110, thereby changing the reflection angle of the image light through the first optical path folding element 182. In this way, hardware-level refractive power adaptation can be achieved, so that users can obtain clear images without wearing additional corrective lenses, significantly improving the versatility and wearing comfort of AR glasses 100.

[0051] For example, the first driving device 110 may be a micro motor or a piezoelectric ceramic actuator, etc.

[0052] It is conceivable that the first optical path folding element 182 can be directly rotatably connected to the frame, or indirectly rotatably connected to the frame through the first driving device 110.

[0053] In some implementations, such as Figure 1 and Figure 2 As shown, the nose support 140 includes a first bracket 142 and a second bracket 144. The first bracket 142 and the second bracket 144 are arranged at an angle and can both rotate relative to the frame 120. The first optical path folding element 182 includes a first reflector 1822 and a second reflector 1824 respectively mounted on the first bracket 142 and the second bracket 144. The first driving device 110 is configured to independently adjust the rotation angle of the first bracket 142 and the second bracket 144.

[0054] The first bracket 142 and the second bracket 144 are independently adjustable in rotation angle via the first drive device 110. This not only improves the physical comfort of wearing the device (adapting to different users' nose bridge widths and head shapes), but also allows users to adjust the angles of the first reflector 1822 and the second reflector 1824 separately according to the difference in visual acuity between the left and right eyes and the interpupillary distance. This achieves precise alignment of binocular imaging and eliminates ghosting problems caused by individual differences in interpupillary distance. This independent left-right, variable-angle adjustment method effectively improves the adjustment range and accuracy, enabling flexible adjustment according to the actual needs of different users.

[0055] It is understandable that the first bracket 142 and the second bracket 144 are arranged at an angle, so that the image light emitted by the optical engine module 160 can be simultaneously received by the first emitting mirror set on the first bracket 142 and the second reflecting mirror 1824 set on the second bracket 144.

[0056] For example, such as Figure 2 As shown, the first driving device 110 includes a first driving motor 112 and a second driving motor 114. The first bracket 142 and the second bracket 144 can be connected by an intermediate pin, and each is driven by the first driving motor 112 and the second driving motor 114 respectively, realizing independent rotation adjustment. Of course, it is conceivable that the first bracket 142 and the second bracket 144 can also be connected by a ball joint or other structure to achieve a relative angle change.

[0057] The first bracket 142 and the second bracket 144 are connected to the mirror frame 120 via the first drive motor 112 and the second drive motor 114. Specifically, the first drive motor 112 and the second drive motor 114 are connected to the control board via wires, bonded to the mirror frame 120, and connected to the first bracket 142 and the second bracket 144 via ball joint structures. Upon receiving a control command, the first drive motor 112 and the second drive motor 114 can operate independently, controlling the angles of the first bracket 142 and the second bracket 144 separately, thereby controlling the angles of the first reflector 1822 and the second reflector 1824.

[0058] It is understandable that the ball joint connection allows the first bracket 142 to not only rotate under the drive of the first drive motor 112, but also to swing with multiple degrees of freedom within a certain range, thus improving the degree of freedom of adjustment. The second drive motor 114 and the second bracket 144 can adopt the same connection method, which will not be described in detail here.

[0059] In some implementations, such as Figure 4As shown, the augmented reality glasses 100 also includes a second driving device 130, which is connected to the optical engine module 160 and configured to drive the optical engine module 160 to move linearly relative to the frame 120, so as to adjust the optical path length between the optical engine module 160 and the first optical path folding element 182.

[0060] By adjusting the optical path length between the optical engine module 160 and the first optical path folding element 182 through the second drive device 130, the diopter can be flexibly adjusted to meet the needs of people with different myopia.

[0061] It is conceivable that the second drive device 130 can be a linear motor or a lead screw structure, etc.

[0062] For example, the second drive unit 130 is connected to the central beam 126, and the optical engine module 160 is connected to the second drive unit 130. The central beam 126 may also be provided with a slide rail to facilitate linear movement of the optical engine module 160 thereon, so as to improve the stability of the movement of the optical engine module.

[0063] In the case where the augmented reality glasses 100 also include a second drive unit 130, in conjunction with reference Figures 4 to 6 The augmented reality glasses 100 also includes a controller 150, which is communicatively connected to the first drive unit 110 and the second drive unit 130 and configured to collaboratively control the first drive unit 110 and the second drive unit 130.

[0064] By coordinating the control of the first drive device 110 and the second drive device 130 with the controller 150, the optical path length between the optical engine module 160 and the first optical path folding element 182, as well as the reflection angle of the image light through the first optical path folding element 182, can be adjusted simultaneously, thereby improving adjustment efficiency and enhancing user experience.

[0065] For example, the controller 150 can be wired or wirelessly connected to the first drive unit 110 and the second drive unit 130.

[0066] In some implementations, such as Figure 2 , Figure 4 and Figure 6 As shown, the nose support 140 includes a flexible sac 146 with an inner cavity, the flexible sac 146 being configured to contact the user's nose bridge. The augmented reality glasses 100 also includes an air pressure regulating device 170, which includes an air pump 172 in fluid communication with the inner cavity for adjusting the volume of the flexible sac 146.

[0067] The flexible capsule 146 automatically deforms according to the microscopic shape of the user's nose bridge, increasing the contact area between the nasal support 140 and the nose bridge. Furthermore, the air inside the capsule evenly distributes the weight of the glasses 100 across the contact surface, alleviating localized pressure pain. Simultaneously, by adjusting the capsule volume (inflating or deflating) using the air pump 172, the frame of the glasses 100 can be raised or lowered to adjust the distance between the eyelashes and the lenses, and to prevent lens fogging. In addition, the user can fine-tune the air pressure within the capsule to precisely align the pupil with the optical center of the lens, thereby achieving optimal visual results and reducing eye strain.

[0068] For example, the flexible capsule 146 can be configured as an inverted V-shape and connected to the first support 142 and the second support 144, for example, by adhesive bonding. The air pump 172 can be connected to the controller 150, which controls the air pump 172 to adjust the volume of the flexible capsule 146.

[0069] It is conceivable that the flexible capsule 146 may also include a first capsule and a second capsule that are isolated from each other, with the first capsule and the second capsule having their volumes adjusted by a first air pump and a second air pump, respectively.

[0070] In some implementations, such as Figure 4 and Figure 6 As shown, the air pressure regulating device 170 also includes a heating element 174 for heating the gas in the inner cavity of the flexible capsule 146 to be input.

[0071] By heating the gas inside the flexible bladder 146 via the heating element 174, blood circulation around the nose and eyes can be promoted, relieving eye strain and fatigue caused by prolonged screen time. Furthermore, in cold weather or in air-conditioned rooms, the heated bladder provides a comfortable temperature, enhancing the initial wearing experience. Simultaneously, because most flexible materials have heat-softening properties, the heated gas can fine-tune the bladder wall's hardness, making it softer and more perfectly conforming to the curve of the nose, thus improving wearing comfort.

[0072] For example, the heating element 174 may be disposed at the air outlet of the air pump 172, or in the transmission channel (e.g., transmission tube) between the air pump 172 and the flexible bladder 146, or at the air inlet of the flexible bladder.

[0073] It is conceivable that the pressure regulating device 170 may also include a temperature sensor, and the temperature sensor and heating element 174 may be communicatively connected to the controller 150.

[0074] In some implementations, such as Figure 4As shown, the lens frame 120 has a fluid channel 120b, which connects the heat dissipation area of ​​the optical engine module 160 with the lens area of ​​the lens frame 120, and is configured to guide the waste heat airflow generated by the optical engine module 160 to the lens surface mounted on the lens frame 120.

[0075] The waste heat airflow generated by the optical engine module 160 is guided to the lens surface mounted on the frame 120 through the fluid channel 120b, so that a warm airflow zone can be formed on the lens surface. This reduces the temperature difference between the hot air exhaled from the nasal cavity and the lens surface, reduces the generation of condensation on the inside of the lens (i.e., lens fogging), and maintains clear vision.

[0076] It is conceivable that the fluid channel 120b in the lens area of ​​the frame 120 can be configured as one or more channel outlets.

[0077] In some implementations, such as Figures 4 to 6 As shown, the frame 120 has a user interaction module on one side, which includes a touch unit 128 for generating control commands, and the frame 120 has a data interface 121 and a battery unit 123 on the other side, which is configured to supply power to the optical engine module 160.

[0078] By placing the user interaction module, data interface 121, and battery unit 123 on both sides of the frame 120, the weight of the glasses 100 can be balanced, improving wearing comfort.

[0079] It is conceivable that the touch unit 128 can send commands to the controller 150 to turn the optical engine module 160 on and off, adjust the angle of the first bracket 142, the angle of the second bracket 144, the optical path length between the optical engine module 160 and the first optical path folding element 182, and inflate or deflate the air pump 172, etc. The touch unit 128 can be an interactive button, which can be pressed and rotated to control the menu.

[0080] The data interface 121 can be used for charging and data transfer, such as connecting to other hardware for upgrades, storage conversion, etc. The data interface 121 is, for example, a Type-C port.

[0081] It is conceivable that the exchange of external information, such as data transmission, can also be carried out wirelessly, for example, through Wi-Fi or Bluetooth.

[0082] The battery unit 123 can be used to store electrical energy and to power the optical engine module 160, as well as other components such as the controller 150.

[0083] Below, refer to Figure 6The control system disclosed herein will be further described.

[0084] The control system (i.e., controller 150 and its peripheral circuits) includes an MCU core control module, as well as a battery module, operation interaction module, motor control module, air pump and heating control module, optomechanical control and display module, and external information interaction module connected to it.

[0085] Specifically, the MCU core control module can be controller 150, which is used to receive instructions and send control instructions.

[0086] The battery module can be battery unit 123, which charges the battery via a TYPE-C interface to power the entire control system. Battery unit 123 can, for example, work with optimized power management circuitry (integrated into the control board) to provide stable and long-lasting power support for power-consuming components of the lens, such as lenses with photochromic functions.

[0087] External information exchange can be achieved through data interface 121, which connects to other hardware via, for example, a Type-C interface, for upgrades, storage conversion, etc. External information exchange can also be achieved by receiving information or controlling other devices via Wi-Fi or Bluetooth.

[0088] The operation interaction module can receive power-on commands by operating the encoder (such as the touch unit 128), for example, by long-pressing to receive commands to call up, select, and confirm menu options by pressing or rotating.

[0089] The motor control module can receive instructions from the MCU core control module to control the linear motor (second drive device 130) and the left and right nose pad adjustment motor (first drive device 110) to perform actions in order to achieve position and angle adjustment.

[0090] The air pump and heating control module can receive instructions from the MCU core control module to control the air pump 172, such as the first air pump and the second air pump, to pump or inflate air to adjust the volume of the flexible airbag. It can also control the heating element 174 to heat the gas.

[0091] The optomechanical control and display module can receive instructions from the MCU core control module to control the optical engine module, enabling the optical engine module to output the image information to be displayed.

[0092] In some implementations, such as Figure 7 As shown, it also includes a cover plate 190, which is connected to the upper part of the lens frame 120. The lens frame 120 has a mounting slot inside it, in which the optical engine module 160 and related circuit boards are housed. The cover plate 190 is configured to close the mounting slot.

[0093] By setting up a mounting slot, the optical engine module 160 and related circuit boards are placed inside the mounting slot, and the mounting slot is closed by a cover plate 190, which can protect the structural components inside the mounting slot.

[0094] It is conceivable that the cover plate 190 and the mounting groove can be opened and closed.

[0095] According to another aspect of this disclosure, a method for displaying images using augmented reality glasses 100 is also provided. For example... Figure 8 As shown, the method includes the following steps: Step S210: Image light is emitted through the optical engine module 160 located at the frame 120 of the augmented reality glasses 100.

[0096] In this step, the controller 150 can receive a power-on command by pressing and holding the touch unit 128. Then, the controller 150 sends a command to the optical engine module 160, causing the optical engine module 160 to emit image light.

[0097] For example, the type of image light to be emitted can also be adjusted via the touch unit 128.

[0098] Step S220: Project image light onto the nose support 140 located in the central region of the frame 120. It is understood that the optical engine module 160 may be disposed in the central region of the frame 120 and above the nose support 140 so that image light can be projected onto the nose support 140.

[0099] Step S230: The first optical path folding element 182 located at the nose support 140 receives the image light and reflects the image light away from the nose support 140 to the second optical path folding element 184 located at the frame 120.

[0100] In this step, the space of the nose support 140 is used for the first optical path reversal, improving the compactness of the optical path system. Furthermore, the number of optical path system components is reduced, thus lightening the weight of the glasses 100.

[0101] Step S240: The image light is reflected using the second optical path folding element 184 to guide it into the user's eye via the optical path. The image light undergoes at least two stages of optical path folding, increasing the optical path length and enabling adaptation to a large field of view.

[0102] In some embodiments, the method of displaying an image further includes acquiring the user's visual acuity parameters, and based on the visual acuity parameters, driving the first optical path folding element 182 to rotate, and / or driving the optical engine module 160 to move linearly.

[0103] By adjusting the angle of the first optical path folding element 182 and the distance between the optical engine module 160 and the first optical path folding element 182 based on the user's vision parameters, it is possible to match users with different vision parameters and improve the user experience.

[0104] For example, a user's vision parameters can be acquired by setting up, for example, an infrared laser projector and a photosensor. By communicating with the controller 150, the controller 150 can control the operation of the drive device according to the vision parameters to adjust the angle of the first optical path folding element 182 and / or adjust the distance between the optical engine module 160 and the first optical path folding element 182.

[0105] Although this disclosure has been described with reference to exemplary embodiments, it should be understood that this disclosure is not limited to the specific embodiments described and shown herein. Various changes can be made to the exemplary embodiments by those skilled in the art without departing from the scope defined by the claims of this disclosure.

[0106] The features mentioned and / or shown in the foregoing description of exemplary embodiments of this disclosure may be combined in the same or similar manner with one or more other embodiments, combined with features in other embodiments, or substituted for corresponding features in other embodiments. Such combinations or substitutions should also be considered as including within the scope of protection of this disclosure.

Claims

1. An augmented reality glasses, characterized in that, include: The eyeglass frame is designed to be worn on the user's head. A nose support is located in the central area of ​​the frame; An optical engine module is disposed in the lens frame and configured to emit image rays; as well as An optical path guiding component is configured to guide the image light from the optical engine module to the user's eyes. The optical path guiding component includes a first optical path folding element and a second optical path folding element. The first optical path folding element is disposed on the nose support portion and configured to receive the image light from the optical engine module and reflect the image light away from the nose support portion to the second optical path folding element disposed on the frame.

2. The augmented reality glasses according to claim 1, characterized in that, The optical path guiding assembly further includes a third optical path folding element, which is disposed on the upper edge of the frame, and a second optical path folding element is disposed on the outer edge of the frame. The second optical path folding element is configured to reflect the image light to the third optical path folding element, and the third optical path folding element is configured to reflect the image light to the user's eyes.

3. The augmented reality glasses according to claim 1, characterized in that, The frame is provided with a through hole, through which the image light reflected by the first optical path folding element passes to be incident on the second optical path folding element.

4. The augmented reality glasses according to claim 1, characterized in that, It also includes a first driving device configured to drive the first optical path folding element to rotate relative to the frame, thereby changing the reflection angle of the image light through the first optical path folding element.

5. The augmented reality glasses according to claim 4, characterized in that, The nasal support includes a first bracket and a second bracket, which are arranged at an angle and are both rotatable relative to the lens frame. The first optical path folding element includes a first reflector and a second reflector respectively mounted on the first bracket and the second bracket. The first driving device is configured to independently adjust the rotation angle of the first bracket and the second bracket.

6. The augmented reality glasses according to claim 1, characterized in that, It also includes a second driving device, which is connected to the optical engine module and configured to drive the optical engine module to move linearly relative to the lens frame in order to adjust the optical path length between the optical engine module and the first optical path folding element.

7. The augmented reality glasses according to claim 4, characterized in that, It also includes a second driving device, which is connected to the optical engine module and configured to drive the optical engine module to move linearly relative to the lens frame, thereby adjusting the optical path length between the optical engine module and the first optical path folding element. The augmented reality glasses also include a controller, which is communicatively connected to the first driving device and the second driving device and configured to collaboratively control the first driving device and the second driving device.

8. The augmented reality glasses according to claim 1, characterized in that, The nasal support includes a flexible capsule with an inner cavity configured to contact the user's bridge of the nose. The augmented reality glasses also include an air pressure regulating device, which includes an air pump in fluid communication with the inner cavity to regulate the volume of the flexible capsule.

9. The augmented reality glasses according to claim 8, characterized in that, The pressure regulating device also includes a heating element for heating the gas to be introduced into the inner cavity of the flexible capsule.

10. The augmented reality glasses according to claim 1, characterized in that, The lens frame has a fluid channel that connects the heat dissipation area of ​​the optical engine module with the lens area of ​​the lens frame, and is configured to guide the waste heat airflow generated by the optical engine module to the lens surface mounted on the lens frame.

11. The augmented reality glasses according to claim 1, characterized in that, The lens frame has a user interaction module on one side, which includes a touch unit for generating control commands, and a data interface and a battery unit on the other side, which is configured to power the optical engine module.

12. The augmented reality glasses according to claim 1, characterized in that, It also includes a cover plate connected to the upper part of the lens frame, the lens frame having a mounting groove inside which the optical engine module and related circuit boards are housed, and the cover plate is configured to close the mounting groove.

13. A method for displaying images using augmented reality glasses, characterized in that, include: Image light is emitted through an optical engine module located in the frame of the augmented reality glasses; The image light is projected onto the nose support located in the central area of ​​the frame; The image light is received by a first optical path folding element located at the nose support portion, and the image light is reflected away from the nose support portion to a second optical path folding element located in the frame. as well as The image light is reflected by the second optical path folding element so that it is guided into the user's eyes via the optical path.

14. The method for displaying an image according to claim 13, characterized in that, Also includes: Obtain the user's vision parameters; as well as Based on the vision parameters, the first optical path folding element is driven to rotate, and / or the optical engine module is driven to move linearly.

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