Display module and AR glasses

Abstract

The utility model relates to a display module and AR glasses, the display module is applied to the AR glasses, and the display module comprises a refraction part with a curved surface; the reflecting film is laminated and attached to the curved surface; and the image source is located on one side of the refraction part, and an image projected by the image source is reflected by the reflection film and then enters human eyes. According to the display module, the reflecting film is laminated on the curved surface of the refraction part, the image projected by the image source is reflected by the reflecting film and then enters the human eyes, compared with a traditional waveguide display scheme, the thickness and weight of the display module are effectively reduced while the display module is more laminated, and the use experience feeling of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of display devices, and in particular to a display module and AR glasses. Background Art

[0002] With the continuous advancement of science and technology, demand for augmented reality (AR) technology is growing rapidly in areas such as film and television, gaming, online teaching, online conferencing, digital exhibition halls, social networking, and shopping. AR technology cleverly integrates virtual information with the real world. It utilizes a wide range of technologies, including multimedia, 3D modeling, real-time tracking and registration, intelligent interaction, and sensing. It simulates computer-generated virtual information such as text, images, 3D models, music, and video, and then applies it to the real world. The two types of information complement each other, thereby enhancing the real world.

[0003] As an important component of AR glasses, the display module usually adopts a waveguide display solution, and the lens is formed by combining a waveguide and a refractive lens. Since the waveguide is a plane and the refractive lens is a curved concave mirror, the thickness and weight of the lens formed by the combination of the plane and the curve are relatively large, resulting in the actual experience of AR glasses using the display module being unsatisfactory, greatly reducing the user experience. Utility Model Content

[0004] To overcome the problems existing in the related art, the present disclosure provides a display module and AR glasses.

[0005] According to a first aspect of an embodiment of the present disclosure, a display module is provided for use in AR glasses, the display module comprising: a refractive element having a curved surface; a reflective film laminated and bonded to the curved surface; and an image source located on one side of the refractive element, the image projected by the image source being reflected by the reflective film and then incident on a human eye.

[0006] In some embodiments, the reflective film is a flexible film.

[0007] In some embodiments, the reflective film is provided in one or more layers.

[0008] In some embodiments, the reflective film is configured as a HOE holographic diffraction film.

[0009] In some embodiments, the curved surface includes a first curved surface and a second curved surface opposite to each other, the first curved surface is arranged opposite to the human eye, and the reflective film is arranged on at least one of the first curved surface and the second curved surface.

[0010] In some embodiments, the reflective film is disposed on the second curved surface; the display module further includes: a protective layer disposed on the second curved surface and covering the reflective film.

[0011] In some embodiments, the display module further includes: a processor module located on one side of the image source, and the processor module is electrically connected to the image source.

[0012] In some embodiments, the image source and the reflective film are arranged at a preset angle.

[0013] In some embodiments, the image source is one or more of an LCos projection light machine, an Lbs projection light machine, and a laser projection.

[0014] In some embodiments, the refractive element is any one of a myopia lens, a hyperopia lens, and an astigmatism lens.

[0015] According to a second aspect of the embodiments of the present disclosure, there is provided an AR glasses, comprising: a display module as described in any embodiment of the first aspect above.

[0016] In some embodiments, the AR glasses further include: a frame body, the frame body including a frame and temples, the refractive element is mounted on the frame, and the image source is fixed to the temples.

[0017] In some embodiments, the diopter is embedded in and / or bonded to the frame.

[0018] In some embodiments, the image source is fixed to the temple by bonding and / or screw connection and / or hook.

[0019] In some embodiments, the display module includes a processor module, and the processor module is mounted on the temple.

[0020] The technical solutions provided by embodiments of the present disclosure can provide the following beneficial effects: The present disclosure provides a display module in which a reflective film is laminated and bonded to the curved surface of a diopter, an image source is located on one side of the diopter, and an image projected by the image source is reflected by the reflective film before entering the human eye. Compared to traditional waveguide display solutions, the present disclosure achieves a more fitted display module while effectively reducing its thickness and weight, thereby improving the user experience.

[0021] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] Figure 1 The figure is a schematic structural diagram of a display module according to an exemplary embodiment.

[0024] Figure 2 is a schematic structural diagram of another display module according to an exemplary embodiment.

[0025] Figure 3 The figure is a schematic structural diagram of AR glasses according to an exemplary embodiment.

[0026] Reference numerals:

[0027] 100. Display module;

[0028] 10. Refractive element; 11. Curved surface; 111. First curved surface; 112. Second curved surface;

[0029] 20. Reflective film; 30. Image source; 40. Protective layer; 50. Processor module;

[0030] 200, frame; 300, temples. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0032] AR glasses have evolved from standard mobile phones combined with software to standalone AR glasses. The devices are becoming increasingly lightweight and portable, and are gradually moving from the lab into reality.

[0033] In related technologies, the display module, as an important component of AR glasses, usually adopts a waveguide display solution, and uses a combination of waveguide and refractive lens to form a lens. Since the waveguide is a plane and the refractive lens is a curved concave mirror, the thickness and weight of the lens formed by the combination of the plane and the curve are relatively large, resulting in the actual experience of AR glasses using the display module being unsatisfactory, which greatly reduces the user experience.

[0034] In order to solve the above technical problems, the present disclosure provides a display module and AR glasses.

[0035] According to a first aspect of the present disclosure, a display module is provided for use in AR glasses. The display module includes: a refractive element having a curved surface; a reflective film, the reflective film being laminated and bonded to the curved surface; and an image source located on one side of the refractive element. An image projected by the image source is reflected by the reflective film and then incident on a human eye.

[0036] The refractive element may be a refractive lens; the reflective film may be a holographic optical element (HOE), an optical element made according to the principles of holography, typically a flexible film formed on a photosensitive film material; and the image source may provide display content for the display module, for example, the image source may provide 3D content, interactive images, etc.

[0037] In the present disclosure, a reflective film is laminated on the curved surface of the refractive element, and the image projected by the image source is reflected by the reflective film and then incident on the human eye. Compared with the traditional waveguide display solution, the display module is more fitted while effectively reducing the thickness and weight of the display module, thereby improving the user experience.

[0038] According to a second aspect of the present disclosure, there is provided an AR glasses, comprising: a display module as in any embodiment of the first aspect above.

[0039] AR glasses can be either optical lens-based or video see-through. They can be monocular or binocular. Optical lens-based AR glasses do not require the user to capture images of the surrounding environment; they simply project the AR image directly in front of the user in the form of a virtual image. Video see-through AR glasses, on the other hand, capture images of the surrounding environment and then overlay the virtual image on the captured image using 3D rendering technology.

[0040] In the present disclosure, a reflective film is laminated on the curved surface of the refractive element, and the image projected by the image source is reflected by the reflective film and then incident on the human eye. Compared with the traditional waveguide display solution, the display module is more fitted while the thickness and weight of the display module are effectively reduced, thereby improving the lightweight of AR glasses and enhancing the user experience.

[0041] According to a first aspect of the present disclosure, a display module is provided. Figure 1-2 As shown, a display module 100 is applied to AR glasses. The display module 100 includes: a refractive element 10, a reflective film 20 and an image source 30.

[0042] The diopter 10 has a curved surface 11 ; a reflective film 20 is laminated and laminated on the curved surface 11 ; an image source 30 is located on one side of the diopter 10 , and an image projected by the image source 30 is reflected by the reflective film 20 and then incident on the human eye.

[0043] It should be noted that there may be one or two display modules 100 , and this disclosure does not impose any specific limitation on this.

[0044] The refractive element 10 can be a refractive lens, which can be any one of an astigmatism lens, a myopia lens, and a hyperopia lens. The refractive lens can be freely customized according to the needs of the user, in the same way as people usually wear glasses.

[0045] The reflective film 20 may be a holographic optical element (HOE), an optical element made according to the principle of holography, and is usually formed on a photosensitive film material.

[0046] The image source 30 can provide display content for the display module 100, displaying externally input image data. The image source 30 can be one or more of an LCos projector, an LBs projector, and a laser projector. For example, the image source 30 can display 3D content, interactive images, and the like. Specifically, the display component can perform spatial intensity modulation on incident light to generate light carrying image information. This light carrying image information can then be reflected by the reflective film 20 and enter the human eye.

[0047] In the present disclosure, by laminating a reflective film 20 on the curved surface 11 of the refractive element 10, the image projected by the image source 30 is reflected by the reflective film 20 and then incident on the human eye. Compared with the traditional waveguide display solution, the display module 100 is more fitted while effectively reducing the thickness and weight of the display module 100, thereby improving the user experience.

[0048] In some embodiments, the reflective film 20 is a flexible film.

[0049] It should be noted that the diopter 10 may be a refractive lens having a curved surface 11. The reflective film 20 is a flexible film, specifically a holographic optical element (HOE), an optical element fabricated based on the principles of holography. The flexible film, typically fabricated on a photosensitive film material, combined with the curved surface 11 and the matching reflective film 20, forms a lens having a relatively small thickness and weight.

[0050] In the disclosed embodiment, the reflective film 20 is a flexible film, and the curved surface 11 of the diopter 10 is laminated and bonded to the flexible film. The resulting lens is relatively thin and lightweight. Compared to traditional waveguide display solutions, this allows for a more precise fit of the display module while effectively reducing its thickness and weight, improving the user experience.

[0051] In some embodiments, the reflective film 20 is provided in one or more layers.

[0052] For example, the reflective film 20 is a single layer, laminated and bonded to the curved surface 11 of the diopter 10. The image source 30 is located on one side of the diopter 10. The image projected by the image source 30 is reflected by the reflective film 20 before entering the human eye. The lens formed by the single layer of reflective film 20 and the curved surface 11 of the diopter 10 is relatively thin and lightweight. Compared to traditional waveguide display solutions, this allows for a more seamless display module while effectively reducing its thickness and weight, improving the user experience.

[0053] Exemplarily, the reflective film 20 comprises two layers, which are laminated and bonded together before being laminated and bonded to the curved surface 11 of the diopter 10. Alternatively, the two layers of reflective film 20 are laminated and bonded to either side of the curved surface 11 of the diopter 10. The image source 30 is located on one side of the diopter 10, and the image projected by the image source 30 is reflected by the reflective film 20 before entering the human eye. The lens formed by the combination of the single reflective film 20 and the curved surface 11 of the diopter 10 is relatively thin and lightweight. Compared to traditional waveguide display solutions, this allows for a more seamless display module while effectively reducing its thickness and weight, improving the user experience.

[0054] In some embodiments, the reflective film 20 is configured as a HOE holographic diffraction film.

[0055] In the embodiment of the present disclosure, the HOE holographic diffraction film may be a transparent holographic film so as not to affect the user's viewing of objects behind the transparent holographic film.

[0056] In some embodiments, as Figure 1-2 As shown, the curved surface 11 includes a first curved surface 111 and a second curved surface 112 opposite to each other. The first curved surface 111 is arranged opposite to the human eye, and the reflective film 20 is arranged on at least one of the first curved surface 111 and the second curved surface 112 .

[0057] The shape of the first curved surface 111 may be a portion of an elliptical surface, a portion of a toroidal surface, or a portion of an aspherical surface, which is not specifically limited in the embodiment of the present disclosure.

[0058] The shape of the second curved surface 112 can be a part of an ellipsoid, a part of a toroid, or a part of an aspheric surface, which is not specifically limited in the present embodiment, as long as the shape of the first curved surface 111 and the shape of the second curved surface 112 are parallel and corresponding.

[0059] For example, Figure 1As shown, the reflective film 20 is disposed on the first curved surface 111, which is positioned opposite the human eye. The reflective film 20 and the curved surface 11 of the diopter 10 form a lens with a relatively low thickness and weight. Compared to traditional waveguide display solutions, this allows for a more precise fit of the display module while effectively reducing its thickness and weight, improving the user experience.

[0060] For example, Figure 2 As shown, the reflective film 20 is disposed on the second curved surface 112, which is located on the side of the diopter 10 away from the human eye. The reflective film 20 combined with the curved surface 11 of the diopter 10 form a lens with a relatively low thickness and weight. Compared to traditional waveguide display solutions, this allows for a more precise fit of the display module while effectively reducing its thickness and weight, improving the user experience.

[0061] For example, the reflective film 20 is disposed on the first curved surface 111 and the second curved surface 112. The first curved surface 111 is positioned opposite the human eye, while the second curved surface 112 is positioned on the side of the diopter 10 away from the human eye. The combination of the reflective film 20 and the curved surface 11 of the diopter 10 forms a lens with a relatively low thickness and weight. Compared to traditional waveguide display solutions, this allows for a more compact display module while effectively reducing its thickness and weight, improving the user experience.

[0062] In some embodiments, as Figure 2 As shown, the reflective film 20 is disposed on the second curved surface 112 ; the display module 100 further includes a protective layer 40 .

[0063] The protection layer 40 is disposed on the second curved surface 112 and covers the reflective film 20 .

[0064] In the embodiment of the present disclosure, the protective layer 40 is a transparent layer to prevent the reflective film 20 from being scratched during use, thereby extending the service life.

[0065] In some embodiments, as Figure 1-2 As shown, the display module 100 further includes a processor module 50 .

[0066] The processor module 50 is located at one side of the image source 30 , and the processor module 50 is electrically connected to the image source 30 .

[0067] In the embodiment of the present disclosure, the processor module 50 is electrically connected to the image source 30, and the external electronic device wirelessly transmits the data to be displayed to the processor module 50, which can be Bluetooth transmission or WIFI transmission. The display data processed by the processor module 50 is transmitted to the image source 30 through the cable and bypasses the hinge. The image projected by the image source 30 is reflected by the reflective film 20 and then incident on the human eye.

[0068] In some embodiments, the image source 30 and the reflective film 20 are arranged at a preset angle.

[0069] In the embodiment of the present disclosure, to facilitate image projection onto the refractive element 10 bonded with the reflective film 20, the position of the image source 30 is set according to the eye-box of the refractive element 10 configured according to user needs, i.e., the display area that the user can clearly see, and the IPD, i.e., the user's pupil distance. The image source 30 is arranged at a preset angle with the reflective film 20. The preset angle can be 30°-70°, preferably 60°, so that the image projected by the image source 30 is reflected by the reflective film 20 and then incident on the human eye.

[0070] Based on the same inventive concept, according to a second aspect of the present disclosure, there is provided an AR glasses, comprising: a display module 100 as in any embodiment of the first aspect described above.

[0071] It should be noted that, in actual applications, the AR glasses provided by the present disclosure can be in a glasses-type form, or the AR glasses can be set to a helmet-type form. Regardless of whether the AR glasses are in a glasses-type form or a helmet-type form, the display module 100 is set in front of the user's eyes. The AR glasses can be monocular or binocular glasses, and the present disclosure does not make specific limitations on this.

[0072] In the present disclosure, a reflective film is laminated on the curved surface of the refractive element, and the image projected by the image source is reflected by the reflective film and then incident on the human eye. Compared with the traditional waveguide display solution, the display module is more fitted while the thickness and weight of the display module are effectively reduced, thereby improving the lightweight of AR glasses and enhancing the user experience.

[0073] In some embodiments, as Figure 3 As shown, the AR glasses also include: a frame body.

[0074] When the AR glasses are set to a glasses-type form, the frame body includes a frame 200 and temples 300 , the diopter 10 is installed on the frame 200 , and the image source 30 is fixed to the temples 300 .

[0075] Among them, the frame 200 and the temples 300 can be an integrated structure or two independent components. The frame 200 and the temples 300 are fixedly connected. The frame 200 is used to clamp and protect the refractive element 10, and the temples 300 are used for users to wear and use conveniently.

[0076] In the disclosed embodiment, the material of the frame body can be selected from metal, plastic or carbon fiber, etc. In order to reduce the weight of the AR glasses, the frame body can adopt a new type of fiber material with high strength and high modulus fiber, which is light in weight and can avoid the pressure on the ears and nose caused by users wearing AR glasses for a long time.

[0077] In some embodiments, as Figure 3 As shown, the diopter 10 is embedded in and / or bonded to the frame 200 .

[0078] For example, the refractive element 10 with the reflective film 20 is embedded in the frame 200, and the frame 200 is used to clamp and protect the refractive element 10. When the AR glasses are in use, the stability of the installation of the refractive element 10 and the frame 200 is guaranteed. When the refractive element 10 is damaged or the user needs to replace it according to his or her own eye degree, the refractive element 10 is removed from the frame 200 and a suitable refractive element 10 is re-installed, which is convenient for the user to use.

[0079] For example, the refractive element 10 with the reflective film 20 is bonded to the frame 200, and the frame 200 is used to clamp and protect the refractive element 10. When the AR glasses are in use, the stability of the installation of the refractive element 10 and the frame 200 is guaranteed. When the refractive element 10 is damaged or the user needs to replace it according to his or her own eye degree, the refractive element 10 is removed from the frame 200 and a suitable refractive element 10 is re-installed, which is convenient for the user to use.

[0080] For example, the refractive element 10 with the reflective film 20 is inlaid and bonded to the frame 200. The frame 200 is used to clamp and protect the refractive element 10. When the AR glasses are in use, the stability of the installation of the refractive element 10 and the frame 200 is guaranteed. When the refractive element 10 is damaged or the user needs to replace it according to his or her own eye degree, the refractive element 10 is removed from the frame 200 and a suitable refractive element 10 is re-installed, which is convenient for the user to use.

[0081] In some embodiments, as Figure 3 As shown, the image source 30 is fixed to the temple 300 by bonding and / or screw connection and / or hook.

[0082] The image source 30 is fixed to the temple 300 by bonding and / or screw connection and / or hook connection, as long as the image source 30 is rigidly connected to the temple 300.

[0083] It should be noted that the image source 30 cannot be placed at the frame 200 , nor can it be placed at the diopter 10 close to the frame 200 , as this may cause the user to have difficulty seeing the image clearly.

[0084] In the embodiment of the present disclosure, to facilitate the projection of an image onto the diopter 10 with the reflective film 20 attached thereto, the position of the image source 30 is set according to the eye-box of the diopter 10 configured according to user needs, i.e., the display area that the user can clearly see, and the IPD, i.e., the user's pupil distance. The image source 30 is arranged at a preset angle to the reflective film 20. At this time, the image source 30 is fixed to the temple 300, so that the preset angle can be 30°-70°, preferably 60°, so that the image projected by the image source 30 is reflected by the reflective film 20 and then incident on the human eye, thereby avoiding the disadvantage of the user having difficulty seeing clearly.

[0085] In some embodiments, as Figure 3 As shown, the display module 100 includes a processor module 50 , which is mounted on the temple 300 .

[0086] It should be noted that each user has different glasses. For example, the diopter of myopia lenses is different. Therefore, targeted calibration is required to correct the image projected by the image source 30 to a position suitable for human eye observation.

[0087] The processor module 50 includes an image correction algorithm module, which performs anti-distortion on the image in advance, so that the image projected by the image source 30 is reflected by the reflective film 20 and then incident on the human eye to see a normal image.

[0088] In the embodiment of the present disclosure, the processor module 50 is electrically connected to the image source 30, and the external electronic device wirelessly transmits the data to be displayed to the processor module 50, which can be Bluetooth transmission or WIFI transmission. The display data processed by the processor module 50 is transmitted to the image source 30 through the cable and bypasses the hinge. The image projected by the image source 30 is reflected by the reflective film 20 and then incident on the human eye.

[0089] It is understood that in this disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of related objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0090] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0091] It can be further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0092] It is further understood that, unless otherwise specified, “connection” includes a direct connection where there are no other components between the two elements, and also includes an indirect connection where there are other elements between the two elements.

[0093] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0094] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0095] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A display module, applied to AR glasses, characterized in that: The display module includes: a diopter having a curved surface; A reflective film, the reflective film is laminated and bonded to the curved surface, the reflective film is a flexible film, and the flexible film and the curved surface are combined to form a lens; and An image source is located on one side of the diopter. A preset angle is formed between the image source and the reflective film. The image projected by the image source is reflected by the reflective film and then enters the human eye.

2. The display module according to claim 1, wherein: The reflective film is provided in one layer or multiple layers.

3. The display module according to claim 1, wherein: The reflective film is configured as a HOE holographic diffraction film.

4. The display module according to claim 1, wherein: The curved surface includes a first curved surface and a second curved surface opposite to each other, the first curved surface is arranged opposite to the human eye, and the reflective film is arranged on at least one of the first curved surface and the second curved surface.

5. The display module according to claim 4, wherein: The reflective film is provided on the second curved surface; The display module further includes: A protective layer is provided on the second curved surface and covers the reflective film.

6. The display module according to claim 1, wherein: Also includes: The processor module is located at one side of the image source and is electrically connected to the image source.

7. The display module according to claim 1, wherein: The image source is one or more of an LCos projection light machine, an Lbs projection light machine and a laser projection.

8. The display module according to claim 1, wherein: The refractive element is any one of a myopia lens, a hyperopia lens and an astigmatism lens.

9. AR glasses, characterized in that: include: The display module according to any one of claims 1 to 8.

10. The AR glasses according to claim 9, characterized in that: Also includes: The frame body comprises a frame and temples, the diopter is mounted on the frame, and the image source is fixed on the temples.

11. The AR glasses according to claim 10, wherein: The diopter is embedded in and / or bonded to the frame.

12. The AR glasses according to claim 10, wherein: The image source is fixed to the temple by bonding and / or screw connection and / or hooking.

13. The AR glasses according to claim 10, wherein: The display module includes a processor module, and the processor module is installed on the temple.

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