AR module, AR display device and AR display system

Abstract

The embodiment of the invention provides an AR module, AR display equipment and an AR display system. The AR module comprises a screen, the screen is vertically arranged, the size of the screen in the vertical direction is larger than the size of the screen in the horizontal direction, and the screen is used for receiving an image matched with the screen in shape; and the optical module is used for receiving the image light rays emitted by the screen and transmitting the image light rays to human eyes in a turning mode. According to the AR module provided by the embodiment of the invention, through the design of the vertically arranged screen and the optical module matched with the screen, the receiving and transmission of the vertical image source content are realized. According to the design, the AR module does not have the problem of mismatching with the screen when receiving the vertical image source.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of AR technology. More specifically, the embodiments of the present application relate to an AR module, an AR display device and an AR display system. Background Art

[0002] AR glasses (augmented reality glasses) can project virtual images and real-world images into the human eye at the same time, allowing users to see virtual images superimposed on real scenes.

[0003] When existing AR glasses are connected to a signal source in portrait mode, a significant problem arises: the display ratio of the AR virtual projection screen cannot perfectly match the vertical screen layout of the signal source. This mismatch often leads to compression of image quality and unsightly black edges appearing on the edges of the picture, thus affecting the user's overall visual experience and accurate communication of content.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the invention

[0005] The purpose of this application is to provide a new technical solution for an AR module, an AR display device and an AR display system.

[0006] In a first aspect, an embodiment of the present application provides an AR module. The AR module includes:

[0007] A screen, the screen is arranged vertically, and the vertical dimension of the screen is larger than the horizontal dimension of the screen, and the screen is used to receive an image matching its shape;

[0008] The optical module is used to receive the image light emitted by the screen and transmit the image light to the human eye in a deflecting manner.

[0009] Optionally, the screen is located on the side of the optical module and is tilted relative to the optical module.

[0010] Optionally, the field of view angle range of the AR module is: 40° to 50°.

[0011] Optionally, the optical module includes a first lens arranged close to the human eye side, the first lens having a front surface close to the human eye and a rear surface away from the human eye, the front surface of the first lens is used to totally reflect light received from the outside, and the front surface of the first lens transmits light reflected by the rear surface of the first lens.

[0012] Optionally, the optical module further includes a second lens, which is located between the screen and an upper surface of the first lens, and the second lens is used to transmit the light transmitted by the screen into the first lens through the upper surface of the first lens.

[0013] Optionally, the optical module also includes a third lens, the rear surface of the first lens and the front surface of the third lens are glued to form a glued lens group with zero optical focal length, the third lens is configured not to transmit the light emitted from the screen, and the glued lens group is configured to transmit external ambient light.

[0014] Optionally, the surface shape of the front surface of the first lens and the surface shape of the rear surface of the third lens are opposite in concave and convex and have the same absolute value of curvature.

[0015] Optionally, a polarizing reflective film is provided on the bonding surface of the bonding lens group.

[0016] Optionally, the first lens and the third lens are prisms.

[0017] Optionally, a polarizing film is provided on the light-emitting side of the screen, the optical module includes a polarizing reflective film, and the transmission axis of the polarizing film is parallel to the reflection axis of the polarizing reflective film.

[0018] In a second aspect, an embodiment of the present application further provides an AR display device. The AR display device includes:

[0019] The AR module as described in the first aspect;

[0020] A frame is formed with a first bearing area and a second bearing area, the vertical dimension of the first bearing area is larger than the horizontal dimension, the first bearing area is used to bear the screen, and the second bearing area is used to bear the optical module.

[0021] Optionally, the first bearing area is located on the left side or the right side of the second bearing area, and the first bearing area is inclined relative to the second bearing area.

[0022] In a third aspect, an embodiment of the present application provides an AR display system. The AR display device includes:

[0023] A signal source configured to provide an image having a vertical dimension greater than a horizontal dimension;

[0024] The AR display device as described in the second aspect;

[0025] The signal source is communicatively connected to the screen of the AR display device.

[0026] According to the embodiment of the present application, the AR module realizes the reception and transmission of vertical image source content through a vertically arranged screen and an optical module design that matches the screen. This design prevents the AR module from having problems with the screen when receiving vertical image sources, that is, it does not need to achieve imaging by compressing the image, and there will be no unsightly black edges on the screen, which improves the user experience.

[0027] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0029] Figure 1 The structure of the AR display device provided in the embodiment of the present application is shown as follows: Figure 1 .

[0030] Figure 2 The structure of the AR display device provided in the embodiment of the present application is shown as follows: Figure 2 .

[0031] Figure 3 Shown is a structural diagram of the AR module provided in an embodiment of the present application.

[0032] Figure 4 Shown is the modulation transfer function MTF curve of the AR module provided in an embodiment of the present application at 450nm.

[0033] Figure 5 The figure shows the modulation transfer function (MTF) curve of the AR module provided in the embodiment of the present application at 540nm.

[0034] Figure 6 Shown is the modulation transfer function MTF curve of the AR module provided in an embodiment of the present application at 610nm.

[0035] Description of reference numerals:

[0036] 1. Screen; 10. Polarizing film; 11. First screen; 12. Second screen;

[0037] 2. Optical module; 21. First optical module; 22. Second optical module; 23. First lens; 24. Second lens; 25. Polarized reflective film; 26. Third lens; 27. Aperture;

[0038] 3. frame; 31. side surface; 311. first side surface; 312. second side surface;

[0039] 4. Connecting wire;

[0040] 5. Signal source;

[0041] 6. Virtual image plane. DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0043] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0044] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0045] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0046] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0047] The present application embodiment provides an AR module. Figure 3 The AR module includes: a screen 1, the screen 1 is vertically arranged, and the vertical dimension of the screen 1 is larger than the horizontal dimension, and the screen 1 is used to receive an image matching its shape;

[0048] The optical module 2 is used to receive the image light emitted by the screen 1 and transmit the image light to the human eye in a deflecting manner.

[0049] In this embodiment, the AR module mainly includes a screen 1 and an optical module 2. The screen 1 is responsible for emitting image light. After being received by the optical module 2, these lights will undergo a series of optical processing and finally be transmitted to the user's eyes to form a clear virtual image surface, ensuring that the user can observe a virtual image that is highly consistent with the content of the screen 1 and without distortion, thereby greatly enhancing the immersion and realism of the AR experience.

[0050] Among them, screen 1 is set vertically, which means that the AR module is used in the AR display device, and screen 1 is set vertically in the AR display device, not horizontally in the AR display device. This design adjustment directly affects the user experience and content presentation of the AR display device. By setting screen 1 vertically, the AR module can more naturally match the user's line of sight direction, especially when processing vertical image sources, without the need for image rotation or cropping, thereby ensuring the integrity and original proportion of the content. In addition, the vertical screen 1 can also visually provide a wider field of view and reduce eye fatigue during long-term use, further enhancing the realism and comfort of the AR experience.

[0051] Furthermore, when the screen 1 is set vertically in the AR module, its design feature is that the vertical dimension of the screen 1 is significantly larger than the horizontal dimension. This unconventional aspect ratio design is intended to better match and display media content in specific formats such as vertical videos and long pictures. By adjusting the aspect ratio of screen 1, the AR module can ensure that these vertical contents maintain their original proportions and integrity when displayed without unnecessary cropping or stretching. This design not only improves the visual presentation of the content, but also enhances the user's immersion and satisfaction when watching vertical content.

[0052] In addition, based on the aspect ratio design of the screen 1 and the arrangement of the setting direction of the screen 1, the virtual image seen by the human eye is a rectangular picture, and the long side direction of the rectangular picture is the vertical direction.

[0053] It should be noted that, in this embodiment, the vertical screen 1 is used to receive images that match its shape. These images may be pre-stored in the device or acquired in real time through the network. Screen 1 provides basic content for the AR effect by displaying these images.

[0054] In addition, the optical module 2 in the AR module is responsible for receiving the image light emitted by the screen 1 and transmitting the light to the human eye through a specific turning method.

[0055] When screen 1 emits image light, the light it emits will be captured by optical module 2. Optical module 2 may contain a series of lenses, reflectors or other optical elements, which are arranged and combined to achieve the turning and focusing of light, thereby accurately guiding the image light to the user's eyes. Optical module 2 transmits image light to the human eye by folding (turning) the light path, which can optimize the volume of the AR module and improve the comfort of users wearing AR display devices.

[0056] In this way, the user can see the image content on the screen 1 through the optical module 2 without directly viewing the screen 1. This design not only improves the realism of the AR experience, but also makes the device more advantageous in appearance and portability.

[0057] Therefore, in this embodiment, the AR module realizes the reception and transmission of vertical image source content through the design of the vertically arranged screen 1 and the optical module 2 matching the screen 1. This design ensures that the AR module will not have the problem of mismatching with the screen 1 when receiving the vertical image source, that is, it does not need to realize imaging by compressing the image, and there will be no unsightly black edge phenomenon on the screen 1, which improves the user experience.

[0058] In a further embodiment, the relative positions of the screen 1 and the optical module 2 are defined. Specifically, referring to Figure 1 and Figure 2 The screen 1 is located on the side of the optical module 2 and is tilted relative to the optical module 2.

[0059] In this embodiment, by tilting the screen 1, the image light emitted by the screen 1 can be more effectively transmitted to the user's eyes along an optimized path through reflection by the optical module 2. This helps to improve the transmission efficiency of light, reduce light loss, and thus enhance the brightness and clarity of the image.

[0060] In addition, the tilted screen 1 design can also expand the user's field of view to a certain extent and increase the field of view. When the light from the screen 1 is continuously reflected by the optical module 2, it can form a wider and more natural virtual image surface in front of the user's eyes, allowing the user to more easily capture the details in the virtual image and enjoy a more immersive AR experience.

[0061] Finally, it should be emphasized that placing the screen 1 to the side of the optical module 2 and using an inclined setting can also help achieve the compactness of the overall structure of the AR module. This design can reduce the space occupied by the device in the horizontal direction, making the AR display device more closely fit the user's facial contour when worn, and improving the wearing comfort and stability.

[0062] In the AR module provided in the embodiment of the present application, based on the design of the aspect ratio of the screen 1 (the screen 1 is a vertical screen 1), the field of view of the AR module can be increased compared to the existing AR module. For example, the vertical dimension of the vertical screen 1 in a vertical manner is greater than the horizontal dimension. This design enables the screen 1 to display more content in the vertical direction. When the AR module adopts a vertical screen 1, its display area is expanded in the vertical direction, so that the optical module 2 can receive and transmit more image light in the vertical direction, thereby increasing the field of view. The screen 1 of the existing AR module is a horizontal screen design, and is generally located above the AR display device. In this case, the field of view of the AR module is generally 20° to 30°. In the embodiment of the present application, the field of view of the AR module can reach greater than 30°, and can even reach greater than 35°.

[0063] In addition, based on the design of the aspect ratio of screen 1 (screen 1 is a vertical screen 1) and the relative position of screen 1 and optical module 2, the field of view of the AR module can be further increased. Specifically, the field of view of the AR module ranges from 40° to 50°.

[0064] In this embodiment, the field of view of the AR module can be further optimized and increased by combining the aspect ratio of the screen 1 (the design of the vertical screen 1) and the relative position of the screen 1 and the optical module 2. In other words, in this embodiment, not only the advantage of the vertical screen 1 in expanding the display area in the vertical direction is utilized, but also the relative position of the screen 1 and the optical module 2 is adjusted to maximize the light transmission efficiency, thereby achieving a significant improvement in the field of view.

[0065] Specifically, the field of view of the AR module is optimized to 40° to 50°. Compared with the field of view usually provided by traditional AR modules, this range provides users with a wider field of view, significantly enhancing the immersion and realism of the AR experience.

[0066] In a specific embodiment, referring to Figure 3 , the architecture of the optical module 2 is defined, wherein the optical module 2 includes a first lens 23 arranged close to the human eye side, the first lens 23 has a front surface close to the human eye and a rear surface away from the human eye, the front surface of the first lens 23 is used to totally reflect the light received from the outside, and the front surface of the first lens 23 transmits the light reflected by the rear surface of the first lens 23.

[0067] In this embodiment, the optical module 2 mainly includes a first lens 23 . The first lens 23 has two main surfaces: a front surface close to the human eye and a rear surface away from the human eye.

[0068] The front surface of the first lens 23 is designed to be able to fully reflect the light received from the outside. This means that when the light is incident on the front surface of the first lens 23 at a specific angle, the light will be completely reflected back into the first lens 23 without penetrating the lens or causing significant refraction, which provides a basis for the optical module 2 to turn the light, so that the light can be propagated and processed inside the optical module 2 according to a predetermined path, thereby improving the image quality. The source of the external light can be the image light emitted by the screen 1, or the light transmitted to the inside of the first lens 23 by other lenses.

[0069] It should be noted that the light reflected back into the first lens 23 will propagate inside the first lens 23 and may be reflected multiple times. These reflections may be generated by different parts of the first lens 23 (such as the front surface, the rear surface or a structure inside the lens).

[0070] In addition to total reflection of the light, the front surface of the first lens 23 can also transmit the light reflected from the rear surface of the first lens 23. This means that when the light undergoes a series of reflections inside the optical module 2 and finally reaches the front surface of the first lens 23, the light will be transmitted and enter the human eye.

[0071] The rear surface of the first lens 23 is designed mainly to cooperate with the front surface to achieve reflection of image light.

[0072] Therefore, in this embodiment, the first lens 23 can maximize the use of light and reduce light loss through the combination of total reflection and transmission. In addition, the first lens 23 can accurately control the propagation path of light, which helps to achieve clearer image display and reduce image distortion and blur.

[0073] Further, refer to Figure 3 The optical module 2 also includes a second lens 24, which is located between the screen 1 and the upper surface of the first lens 23, and the second lens 24 transmits the light transmitted by the screen 1 to the first lens 23 through the upper surface of the first lens 23.

[0074] In this embodiment, the second lens 24 is located between the screen 1 and the upper surface of the first lens 23. This means that the light emitted by the screen 1 first passes through the second lens 24 and then is guided to the first lens 23. In this embodiment, the first lens 23 includes a front surface of the first lens 23, a rear surface of the first lens 23 and an upper surface of the first lens 23, and one side of the upper surface of the first lens 23 is connected to the front surface of the first lens 23, and the other side is connected to the rear surface of the first lens 23.

[0075] The main function of the second lens 24 is to effectively transmit the light transmitted by the screen 1 to the inside of the first lens 23 through the upper surface of the first lens 23. This requires the second lens 24 to have specific optical properties, such as appropriate focal length, curvature, etc., to ensure that the light can be transmitted in an expected manner.

[0076] For example, when the second lens 24 is properly disposed between the screen 1 and the first lens 23, the second lens 24 can further focus, diffuse or adjust the direction of the light emitted from the screen 1. This adjustment helps to optimize the propagation path of the light, reduce aberrations, and thus improve the contrast and clarity of the image.

[0077] Furthermore, the optical module 2 also includes a third lens 26, the rear surface of the first lens 23 and the front surface of the third lens 26 are glued to form a glued lens group with zero optical focal length, the third lens 26 is configured not to transmit the light emitted from the screen 1, and the glued lens group is configured to transmit external ambient light.

[0078] In this embodiment, the rear surface of the first lens 23 and the front surface of the third lens 26 are glued together in some way (such as optical glue) to form an integral structure, that is, a glued lens group.

[0079] This cemented lens group is designed to have zero optical power, meaning that the cemented lens group does not change the focus state of light propagating through it.

[0080] The main function of the cemented lens group is to transmit image light from the outside world. This light can include natural light, ambient light, or light from other light sources. Since the overall focal length of the cemented lens group is zero, zero focal length means that the cemented lens group has no convergence or divergence effect on the light, that is, the external ambient light still maintains its original direction after passing through the cemented lens group. This helps to maintain the original proportion and shape of the image and avoid distortion or deformation.

[0081] In addition, according to the description, the third lens 26 is specially configured not to transmit the light emitted by the screen 1. This means that when the screen 1 emits light, the light does not pass through the third lens 26, that is, the light emitted by the screen 1 will not be affected by the third lens 26 (or the impact is minimal), but will be transmitted to the final observation or imaging position through other paths (such as directly through the front surface of the first lens 23).

[0082] Therefore, in this embodiment, by gluing the rear surface of the first lens 23 and the front surface of the third lens 26 to form a zero optical focal length glued lens group, and specially configuring the third lens 26 not to transmit the light emitted from the screen 1, the optical module 2 can achieve effective transmission of external image light and non-interference processing of the light from the screen 1.

[0083] In order to ensure that the focal power of the cemented lens group is zero, a specific embodiment is as follows: the surface shape of the front surface of the first lens 23 and the surface shape of the rear surface of the third lens 26 are opposite in concave and convex and the absolute value of the curvature is equal.

[0084] In this embodiment, the front surface of the first lens 23 and the rear surface of the third lens 26 are complementary in shape. If the front surface of the first lens 23 is convex (or concave), then the rear surface of the third lens 26 is concave (or convex). This opposite surface design is the basis for ensuring that the optical power of the cemented lens group is zero optical power.

[0085] In addition to having opposite surface shapes, the absolute values ​​of the curvatures of these two surfaces are also equal. This means that, despite their opposite shapes, they are curved to the same degree. This design helps to keep the overall optical performance of the lens group stable after bonding, avoiding the introduction of additional aberrations or distortion.

[0086] In a particular embodiment, the front surface of the first lens 23 and the rear surface of the third lens 26 may both be planes.

[0087] In one embodiment, referring to Figure 3 A polarizing reflective film 25 is provided on the bonding surface of the bonding lens group.

[0088] In this embodiment, in order to ensure that the rear surface of the first lens 23 can reflect the image light emitted from the screen 1, a polarizing reflective film 25 is arranged on the bonding surface of the bonding lens group. For example, the polarizing reflective film 25 can be arranged on the rear surface of the first lens 23, or the polarizing reflective film 25 can be arranged between the rear surface of the first lens 23 and the front surface of the third lens 26, or the polarizing reflective film 25 can be arranged on the front surface of the third lens 26.

[0089] Among them, one function of the polarized reflective film 25 of this embodiment is that the polarized reflective film 25 can reflect the image light emitted by the screen 1, and the polarized reflective film 25 can transmit the external ambient light, so that in the AR module, the user can see an image that combines the virtual image with the real world image.

[0090] In one embodiment, referring to Figure 3 , the first lens 23 and the third lens 26 are prisms.

[0091] In this embodiment, the first lens 23 and the third lens 26 no longer adopt the traditional spherical or aspherical lens shape, but are designed as prisms, which means that the first lens 23 and the third lens 26 have specific refractive surfaces and reflective surfaces, and can realize complex operations such as refraction, reflection or total reflection of light.

[0092] As prisms, the first lens 23 and the third lens 26 can not only change the propagation direction of light, but also selectively control the polarization state, wavelength or intensity of light. This functional diversity makes the prism lens group extremely flexible and applicable in optical design.

[0093] In one embodiment, referring to Figure 3 A polarizing film 10 is disposed on the light-emitting side of the screen 1 , and the optical module 2 includes a polarizing reflective film 25 . The transmission axis of the polarizing film 10 and the reflection axis of the polarizing reflective film 25 are parallel.

[0094] In this embodiment, the transmission axis of the polarizing film 10 and the reflection axis of the polarizing reflective film 25 are designed to be parallel. This means that the light transmitted from the light-emitting side of the screen 1 and in accordance with the transmission axis of the polarizing film 10 is incident on the polarizing reflective film 25 and is reflected by the polarizing reflective film 25 back to the front surface of the first lens 23, without changing the polarization direction of the light in the whole process. That is, the polarization direction of the light allowed to be transmitted by the polarizing film 10 is consistent with the polarization direction of the light allowed to be reflected by the polarizing reflective film 25.

[0095] Due to the parallel configuration of the polarizing film 10 and the polarizing reflective film 25, only light that conforms to a specific polarization direction can propagate in the optical module 2. This helps to reduce the interference of stray light and reflected light on the image, thereby improving the contrast of the image.

[0096] In an optional embodiment, the size of the screen 1 is 0.3 inches to 1.03 inches.

[0097] In this embodiment, by limiting the size of the screen 1 in the AR module, it can be seen that the screen 1 in the AR module is a smaller screen 1. On a smaller screen 1, a finer image display can be achieved by improving the resolution and pixel density. This helps to improve the clarity and detail of the image, so that users can get a good visual experience even on a smaller screen 1.

[0098] In an optional embodiment, the type of the screen 1 includes but is not limited to a Micro-OLED screen 1.

[0099] In an optional embodiment, the virtual image distance range between the virtual image surface formed by the AR module and the human eye is 1m to 8m.

[0100] In this embodiment, the virtual image distance is between 1 meter and 8 meters, which is generally within the natural focusing range of the human eye, which helps reduce visual fatigue and discomfort. Within this distance, the user can naturally view the virtual image, which helps to enhance the realism and immersion of the augmented reality experience, allowing the user to better understand and operate the virtual content.

[0101] In a specific embodiment, the AR module includes a screen 1, and a polarizing film is provided on one side of the screen 1. The optical module 2 includes: a first lens 23, a second lens 24, and a third lens 26, wherein the first lens 23 and the third lens 26 are glued together, and a polarizing reflective film 25 is provided on the glued surface of the first lens 23 and the third lens 26. The AR module also includes a stop 27. Table 1 is a structural parameter table included in the AR module.

[0102] Table 1:

[0103]

[0104] Figure 4 , Figure 5 , Figure 6 The modulation transfer function (MTF) curves of the AR module at 450nm, 540nm, and 610nm respectively.

[0105] It can be seen from the figure that at a spatial frequency of 15lp / mm, reference Figure 4 , at 450nm wavelength, the MTF value is higher than 0.7; refer to Figure 5 , at 540nm wavelength, the MTF value is higher than 0.7; reference Figure 6 , at a wavelength of 610nm, the MTF is higher than 0.7.

[0106] In a second aspect, the embodiment of the present application further provides an AR display device. Exemplarily, the AR display device may be AR glasses or the like.

[0107] Reference Figure 1 and Figure 2 The AR display device includes: the AR module as described in the first aspect; a frame 3, wherein the frame 3 is formed with a first bearing area and a second bearing area, the vertical dimension of the first bearing area is larger than the horizontal dimension, the first bearing area is used to bear the screen 1, and the second bearing area is used to bear the optical module 2.

[0108] In this embodiment, the AR display device includes a frame 3, which may be a structure similar to a frame of glasses. The frame 3 is formed with a first bearing area and a second bearing area, the second bearing area is used to install the optical module 2, and the first bearing area is used to install the screen 1.

[0109] Exemplarily, the second bearing area is similar to the structure of a spectacle frame. The frame 3 may include two second bearing areas, one of which corresponds to the left eye and the other corresponds to the right eye. A first optical module 21 may be arranged in one of the second bearing areas, and a second optical module 22 may be arranged in the other second bearing area. The first optical module 21 and the second optical module 22 have the same architecture.

[0110] For example, in order to match the aspect ratio of the screen 1 and the setting direction of the screen 1, the first bearing area is a vertically arranged long strip-like structure. In addition, in order to ensure that the light emitted by the screen 1 can be transmitted to the optical module 2, the first bearing area is a hollow structure.

[0111] The frame 3 may include two first bearing areas, one of which is provided with a first screen 11, and the other is provided with a second screen 12. Figure 1 and Figure 2 , the light emitted from the first screen 11 corresponding to the first optical module 21 passes through the first optical module 21 and is projected onto the left eye virtual image plane 6, the projected field of view is a rectangular field of view, and the vertical direction is the long side direction of the rectangular field of view. The light emitted from the second screen 12 corresponding to the second optical module 22 passes through the second optical module 22 and is projected onto the right eye virtual image plane 6, the projected field of view is a rectangular field of view, and the vertical direction is the long side direction of the rectangular field of view. Exemplarily, the left eye virtual image plane 6 and the right eye virtual image plane 6 have the same virtual image distance from the human eye, and the two are the same virtual image plane.

[0112] In one embodiment, referring to Figure 1 and Figure 2 , the first bearing area is located on the left side or the right side of the second bearing area, and the first bearing area is inclined relative to the second bearing area.

[0113] In this embodiment, in order to correspond to the relative position relationship between the screen 1 and the optical module 2, the first bearing area is located on the left side or the right side of the second bearing area, and the first bearing area is inclined relative to the second bearing area, so that the AR module is installed on the frame 3, which can reduce the space occupied by the device in the horizontal direction, so that the AR display device can better fit the user's facial contour when worn, thereby improving the wearing comfort and stability.

[0114] Exemplarily, the first bearing area is located on the side surface 31 of the frame 3. The frame 3 includes two first bearing areas, one of which is the first side surface 311 located on the leftmost side of the frame, and the other first bearing area is the second side surface 312 located on the rightmost side of the frame.

[0115] In a third aspect, an embodiment of the present application further provides an AR display system. The AR display system includes: a signal source 5, configured to provide an image whose vertical dimension is larger than its horizontal dimension;

[0116] The AR display device as described in the second aspect;

[0117] The signal source 5 is communicatively connected to the screen 1 of the AR display device.

[0118] In this embodiment, an AR display system is provided. The AR display system includes a signal source 5. The signal source 5 may include but is not limited to a mobile phone that can provide vertical images.

[0119] The signal source 5 and the AR display device may transmit the image signal via a wireless connection, or the signal source 5 and the AR display device may transmit the image signal via a connection line 4 .

[0120] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0121] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. An AR module, characterized in that: include: A screen (1), the screen (1) being arranged vertically, and the vertical dimension of the screen (1) being larger than the horizontal dimension, and the screen (1) being used to receive an image matching its shape; The optical module (2) is used to receive the image light emitted by the screen (1) and transmit the image light to the human eye in a deflecting manner.

2. The AR module according to claim 1, characterized in that: The screen (1) is located on the side of the optical module (2) and is arranged to be inclined relative to the optical module (2).

3. The AR module according to claim 1 or 2, characterized in that: The field of view angle range of the AR module is: 40°~50°.

4. The AR module according to claim 1, characterized in that: The optical module (2) comprises a first lens (23) arranged close to the human eye side, the first lens (23) having a front surface close to the human eye and a rear surface away from the human eye, the front surface of the first lens (23) being used to totally reflect light received from the outside, and the front surface of the first lens (23) transmitting light reflected by the rear surface of the first lens (23).

5. The AR module according to claim 4, characterized in that: The optical module (2) further comprises a second lens (24), wherein the second lens (24) is located between the screen (1) and the upper surface of the first lens (23), and the second lens (24) transmits the light transmitted by the screen (1) into the first lens (23) through the upper surface of the first lens (23).

6. The AR module according to claim 5, characterized in that: The optical module (2) further comprises a third lens (26), wherein the rear surface of the first lens (23) and the front surface of the third lens (26) are glued together to form a glued lens group with zero optical focal length, wherein the third lens (26) is configured not to transmit light emitted from the screen (1), and the glued lens group is configured to transmit ambient light.

7. The AR module according to claim 6, characterized in that: The surface shape of the front surface of the first lens (23) and the surface shape of the rear surface of the third lens (26) are opposite in concave and convex and have the same absolute value of curvature.

8. The AR module according to claim 6, characterized in that: A polarizing reflection film (25) is arranged on the cemented surface of the cemented lens group.

9. The AR module according to any one of claims 6 to 8, characterized in that: The first lens (23) and the third lens (26) are prisms.

10. The AR module according to claim 1, characterized in that: A polarizing film (10) is provided on the light-emitting side of the screen (1), the optical module (2) comprises a polarizing reflective film (25), and the transmission axis of the polarizing film (10) and the reflection axis of the polarizing reflective film (25) are parallel.

11. An AR display device, characterized in that: include: The AR module according to any one of claims 1 to 10; A frame (3), wherein the frame (3) is formed with a first bearing area and a second bearing area, the vertical dimension of the first bearing area is greater than the horizontal dimension, the first bearing area is used to bear the screen (1), and the second bearing area is used to bear the optical module (2).

12. The AR display device according to claim 11, characterized in that: The first bearing area is located on the left side or the right side of the second bearing area, and the first bearing area is inclined relative to the second bearing area.

13. An AR display system, characterized in that: include: A signal source (5) is configured to provide an image having a vertical dimension greater than a horizontal dimension; The AR display device as claimed in claim 11 or 12; The signal source (5) is communicatively connected to the screen (1) of the AR display device.

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