An AR display device

Abstract

The application discloses an AR display device, which comprises a waveguide lens, a first projection light machine and a second projection light machine arranged on the left and right sides of the waveguide lens respectively, a controller connected with the first projection light machine and the second projection light machine respectively, the first projection light machine is used for projecting a vertical screen image to the waveguide lens, the second projection light machine is used for projecting a horizontal screen image to the waveguide lens, and the controller is used for controlling the opening and closing of the first projection light machine and the second projection light machine. In the AR display device, the two projection light machines for projecting the projection images from the left and right sides of the waveguide lens are used for projecting the horizontal screen image and the vertical screen image to the waveguide lens respectively, so that in the actual use process, the horizontal screen projection image or the vertical screen projection image can be selected according to the actual projection picture, without the need of reducing the projection image, the field of view of the light machine is fully utilized, and the display effect of the projection image is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of AR display technology, and particularly relates to an AR display device. BACKGROUND

[0002] The AR display device is a device that projects a projection picture into a waveguide element through a projection light machine and guides the projection picture into the human eye through the waveguide element, and is generally used in the form of a helmet, glasses and the like. Since the horizontal visual range of the human eye is larger than the vertical visual range, generally, the picture displayed to the user in the AR display device is a projection picture displayed in a horizontal screen. However, in actual application, there are inevitably images that need to be displayed in a vertical screen, which requires the vertical screen image to be reduced in proportion to the size of the height and the display area, and there are some unused areas on both sides of the display area, which reduces the utilization rate of the display area and the display effect to a certain extent. SUMMARY

[0003] The purpose of the present application is to provide an AR display device that can improve the display effect of the projection image to a certain extent and improve the user experience.

[0004] To solve the above technical problems, the present application provides an AR display device, comprising a waveguide lens, a first projection light machine and a second projection light machine arranged on both sides of the waveguide lens respectively, and a controller connected with the first projection light machine and the second projection light machine respectively.

[0005] The first projection light machine is used for projecting a vertical screen image to the waveguide lens.

[0006] The second projection light machine is used for projecting a horizontal screen image to the waveguide lens.

[0007] The controller is used for controlling the opening and closing of the first projection light machine and the second projection light machine.

[0008] In an optional embodiment of the present application, the controller is used for independently controlling the opening and closing of the first projection light machine and the second projection light machine.

[0009] In an optional embodiment of the present application, the controller is used for controlling the first projection light machine and the second projection light machine to be opened simultaneously to obtain a stereoscopic projection image formed by superimposing the projection images output by the first projection light machine and the second projection light machine.

[0010] The controller is further used for controlling the first projection light machine to project and display a first coincident area image and a first non-coincident area image.

[0011] The controller is further configured to control the second projection light machine to project a second coincident area image and a second non-coincident area image.

[0012] The first coincident area and the second coincident area are images of the image displayed in the coincident area of the portrait image and the landscape image; the first non-coincident area image is an image displayed in the non-coincident area of the portrait image display area; and the second non-coincident area image is an image displayed in the non-coincident area of the landscape image display area.

[0013] In an optional embodiment of the present application, the first projection light machine is arranged in a corresponding first space plane one, a first space plane two, and a first space plane three; the first space plane one is perpendicular to the length direction of the waveguide lens, the first space plane two is perpendicular to the waveguide lens, and the first space plane three is parallel to the surface of the waveguide lens; the first space plane one, the first space plane two, and the first space plane three are three space planes of a minimum cuboid space successively decreasing in area, and the first space plane three is the surface of the first projection light machine outputting the projection light;

[0014] In an optional embodiment of the present application, the first projection light machine is arranged in a corresponding first space plane one, a first space plane two, and a first space plane three; the first space plane one is perpendicular to the length direction of the waveguide lens, the first space plane two is perpendicular to the waveguide lens, and the first space plane three is parallel to the surface of the waveguide lens;

[0015] The first reflection component is further arranged between the first projection light machine and the waveguide lens, and is used for reflecting the projection light output by the first projection light machine and projecting the reflected light into the waveguide lens.

[0016] In an optional embodiment of the present application, the second projection light machine is arranged in a corresponding second space plane one, a second space plane two, and a second space plane three; the second space plane one is perpendicular to the length direction of the waveguide lens, the second space plane two is perpendicular to the waveguide lens, and the second space plane three is parallel to the surface of the waveguide lens; the second space plane one, the second space plane two, and the second space plane three are three space planes of a minimum cuboid space successively decreasing in area, and the second space plane three is the surface of the second projection light machine outputting the projection light;

[0017] The second reflection component is further arranged between the second projection light machine and the waveguide lens, and is used for reflecting the projection light output by the second projection light machine and projecting the reflected light into the waveguide lens.

[0018] In an optional embodiment of the present application, the second reflection component includes a first reflection surface, a second reflection surface, and a third reflection surface;

[0019] a normal vector of the first reflecting surface is parallel to the second spatial plane one and the first reflecting surface and the second spatial plane three form a 45-degree angle;

[0020] a normal vector of the second reflecting surface is parallel to the second spatial plane three and the second spatial plane two forms a 45-degree angle;

[0021] a normal vector of the third reflecting surface is parallel to the second spatial plane two and the third reflecting surface and the second spatial plane three form a 45-degree angle.

[0022] In an optional embodiment of the present application, the second projection light machine is attached to the waveguide lens in a corresponding second spatial plane one, the second spatial plane two is perpendicular to the waveguide lens, and the second spatial plane three is perpendicular to the length direction of the waveguide lens; wherein the second spatial plane one, the second spatial plane two, and the second spatial plane three are three spatial planes of a minimum cuboid space that encloses the second projection light machine, and the areas of the three spatial planes decrease in sequence, and the second spatial plane three is the surface of the second projection light machine outputting the projection light;

[0023] Further comprising a second reflecting component arranged between the second projection light machine and the waveguide lens, for projecting the projection image output by the second projection light machine on the waveguide lens.

[0024] In an optional embodiment of the present application, the second reflecting component comprises a first reflecting surface and a second reflecting surface;

[0025] wherein a normal vector of the first reflecting surface is parallel to the second spatial plane one and forms a 45-degree angle with the second spatial plane three;

[0026] a normal vector of the second reflecting surface is parallel to the second spatial plane three and forms a 45-degree angle with the second spatial plane one.

[0027] The AR display device provided by the present application comprises a waveguide lens, a first projection light machine and a second projection light machine arranged on both sides of the waveguide lens respectively, and a controller connected with the first projection light machine and the second projection light machine respectively; wherein the first projection light machine is used for projecting a vertical screen image on the waveguide lens; the second projection light machine is used for projecting a horizontal screen image on the waveguide lens; and the controller is used for controlling the opening and closing of the first projection light machine and the second projection light machine.

[0028] In the AR display device in the application, the two projection light machines respectively projecting the projection images from the left and right sides of the waveguide lens are respectively used to project the horizontal screen image and the vertical screen image to the waveguide lens, so that in actual use, whether to project the horizontal screen image or the vertical screen image can be selected according to the actual need of the projected image, without the need to reduce the projected image, thereby improving the utilization rate of the display area on the waveguide lens and improving the projection image display effect to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 The structural schematic diagram of the AR display device provided for the embodiments of the present application;

[0031] Figure 2 The schematic diagram of the projection display area provided for the embodiments of the present application;

[0032] Figure 3 The structural schematic diagram of the projection light machine provided for the embodiments of the present application;

[0033] Figure 4 The setting structural schematic diagram of the second projection light machine provided for the embodiments of the present application;

[0034] Figure 5 The setting structural schematic diagram of the first projection light machine provided for the embodiments of the present application;

[0035] Figure 6 Another setting structural schematic diagram of the second projection light machine provided for the embodiments of the present application. DETAILED DESCRIPTION

[0036] In the display device, the displayed video or single frame image includes horizontal screen display and vertical screen display. The horizontal screen display is to display a rectangular picture with the horizontal size greater than the vertical size, and correspondingly, the vertical screen display is to display a rectangular picture with the vertical size greater than the horizontal size.

[0037] However, in the AR display device, the projection light spot of the projection image projected by the projection light machine is generally a rectangular spot, and the rectangular picture is projected to the waveguide element in the horizontal screen mode. This limits the projection display of the AR display device to a certain extent, and the projection image that needs to be displayed in the vertical screen mode cannot be displayed.

[0038] To this end, the application provides an AR display device capable of realizing both landscape display and portrait display.

[0039] For those skilled in the technical field, the application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0040] As shown in Figure 1 , Figure 1 The AR display device provided for the implementation of the application can include:

[0041] The waveguide lens 10;

[0042] The first projection light machine 20 and the second projection light machine 30 are respectively arranged on the two sides of the waveguide lens 10; and the controller is connected with the first projection light machine 20 and the second projection light machine 30;

[0043] The first projection light machine 20 is used for projecting a portrait image to the waveguide lens 20;

[0044] The second projection light machine 30 is used for projecting a landscape image to the waveguide lens 10;

[0045] The controller is used for controlling the opening and closing of the first projection light machine 20 and the second projection light machine 30.

[0046] The structure of the waveguide lens 10 of the AR display device can be analogous to the structure of a conventional glasses lens. The waveguide lens 10 is used for the user to see the real scene through the waveguide lens 10, and the virtual projection picture output by the projection light machine is guided into the human eye through the waveguide lens 10, so that the user finally sees the picture of the superposition of the real scene and the projection image. For a conventional glasses, it generally includes one lens for each of the left and right eyes, but for the AR display device, the waveguide lens 10 can be one lens for each of the left and right eyes, or a one-piece structure lens corresponding to the lenses for the left and right eyes. The application does not make specific limitations in this regard.

[0047] Whether the waveguide lens 10 in the embodiment is a one-piece lens or two independent lenses, the first projection light machine 20 and the second projection light machine 30 can be respectively arranged on the two sides of the waveguide lens 10. When the user wears the AR display device, the two projection light machines are generally located at the temple or the surrounding position of the user.

[0048] Because the first projection light machine 20 can be used to project a portrait image to the waveguide lens 10, and the second projection light machine 30 can project a landscape image to the waveguide lens 10. Thus, when it is needed to display a portrait image to a user through the waveguide lens 10, the first projection light machine 20 can be directly used to project the portrait image to the waveguide lens 10; and when it is needed to display a landscape image to a user through the waveguide lens 10, the second projection light machine 30 can be directly used to project the landscape image to the waveguide lens 10. Thus, it can be seen that whether the image to be projected and displayed is a landscape image or a portrait image, the image does not need to be compressed, which ensures the display effect of the AR display device.

[0049] In each time of projecting a projection image, one of the two projection light machines can be selected to be in operation and the other one can be in non-operation based on the image display requirement. It is referred to Figure 2 , Figure 2 In the embodiment, the portrait display area and the landscape display area in the square area exist in the overlapping area, and in the four directions, the display areas do not overlap. From the perspective of the user's vision, the portrait display area corresponding to the first projection light machine 20 and the landscape display area corresponding to the second projection light machine 30 exist in the partially overlapping area.

[0050] Thus, in the optional embodiment, the controller can also control the first projection light machine 20 and the second projection light machine 30 to be in operation at the same time. For example, the first projection light machine 20 can be used to project a portrait display image, and the second projection light machine 30 can be used to project other picture images in the non-overlapping area projected and displayed by the first projection light machine 20 and the second projection light machine 30, which can improve the utilization rate of the display picture area to a certain extent.

[0051] In addition, in the actual application, the first projection light machine 20 and the second projection light machine 30 can be simultaneously turned on, and the images projected by the first projection light machine 20 and the second projection light machine 30 can be superimposed. For example, the controller can process the projection image to be projected, so that the projection images projected by the first projection light machine 10 and the second projection light machine 20 display the same image picture in the overlapping display area corresponding to the two projection light machines, which can enhance the display brightness of the picture in the overlapping display area to a certain extent.

[0052] For another example, the controller can appropriately process the picture to be projected by the first projection light machine and the second projection light machine, so that the two projection light machines simultaneously project parallax maps in the overlapping display area, which are introduced into the human eye through the waveguide lens to form an image with a stereoscopic display effect.

[0053] Finally, for the first projection light machine 20 and the second projection light machine 30 in the application which can respectively project display longitudinal screen display images and transverse screen display images, there can be multiple projection display modes, and the controller can independently control the opening and closing of each projection light machine to meet the AR display device projection display of different types of images.

[0054] And for the first projection light machine 20 and the second projection light machine 30 to project the projection image spot to the waveguide lens 10 is itself a rectangular spot, so to realize the first projection light machine 20 and the second projection light machine 10 respectively projecting longitudinal screen images and transverse screen images, as long as the projection direction of the first projection light machine 20 and the second projection light machine 30 to the waveguide lens 10 is reasonably set, the projection of longitudinal screen images and transverse screen images can be realized.

[0055] In summary, the AR display device in the application contains a first projection light machine and a second projection light machine which can respectively project longitudinal screen images and transverse screen images, so that the AR display device can display both transverse screen images and longitudinal screen images according to the actual projection image display needs, without the need to reduce the image, greatly improving the display effect of the AR display device, and being conducive to expanding the types of projection images displayed by the AR display device.

[0056] As mentioned earlier, for the projection display image mode of the two projection light machines, in addition to the controller independently controlling the first projection light machine to project and display longitudinal screen images, the second projection light machine to project and display longitudinal screen images, and the first projection light machine and the second projection light machine to project and display overlapping images, for the first projection light machine and the second projection light machine, it is not necessarily to perform full screen projection.

[0057] Optionally, for the first projection light machine, the controller can control it to only project and output the overlapping area projection image; with reference to Figure 2 That is, the controller controls the first projection light machine to output only the image displayed in the Figure 2 overlapping display area O.

[0058] Further, the controller can also control the first projection light machine to only output the image displayed in the non-overlapping areas A and B belonging to the longitudinal screen image display area.

[0059] Similarly, the controller can also control the second projection light machine to only output the image displayed in the overlapping area O, and can also control the second projection light machine to only output the image displayed in the non-overlapping areas C and D belonging to the transverse screen image display area.

[0060] That is, for the first projection light machine and the second projection light machine, three different types of projection pictures can be displayed respectively and independently; then in the actual application process, different display modes can be realized based on the different combinations of the different types of projection pictures output by the first projection light machine and the second projection light machine.

[0061] The image displayed by the first projection light machine only in the region O is a first coincident region image, and the image displayed by the first projection light machine only in the regions A and B is a first non-coincident region image; the image displayed by the second projection light machine only in the region O is a second coincident region image, and the image displayed by the second projection light machine only in the regions C and D is a second non-coincident region image.

[0062] In actual projection image display, there are multiple projection display modes as follows,

[0063] 1) Landscape single-eye display state: the first projection light machine is turned off, and the second projection light machine projects and displays a landscape picture alone;

[0064] 2) Vertical single-eye display state: the second projection light machine is turned off, and the second projection light machine projects and displays a vertical picture alone;

[0065] 3) Overlapping 3D display state: the first projection light machine and the second projection light machine respectively output the first coincident region image and the second coincident region image, and the two projection light machines display and output parallax images in the coincident region O, so that the projection image seen by the human eye is a 3D image;

[0066] 4) Overlapping region repeated brightening display: the first projection light machine and the second projection light machine respectively output the first coincident region image and the second coincident region image, and the first projection light machine and the second projection light machine output the same two-dimensional plane image in the overlapping region O, which is equivalent to the same two-dimensional plane image being displayed twice in the same position, increasing the display brightness (two-dimensional picture);

[0067] 5) Landscape expansion display: the second projection light machine projects a landscape display image, and the first projection light machine projects and outputs the first non-coincident region image in the regions A and B, forming an expansion region image; for example, the first projection light machine can output a landscape image to display a complete landscape television or film picture, and the regions A+B can display subtitle, barrage, commentary, etc. information or other app pop-up notification messages through the projection display of the first projection light machine, without causing obstruction to the landscape display picture, and the viewing experience is better.

[0068] 6) Vertical screen expansion display: the first projection light machine projects the vertical screen picture display two-dimensional picture, and the second projection light machine projects the second non-coincidence area image in the C+D area as an expansion area image to display other information. For example, the vertical screen light machine displays a complete vertical screen short video picture, the C+D area displays comment, prompt, brush praise, live broadcast reward, gift and other information or other app pop-up window notification messages, which will not block the vertical screen display picture, and the viewing experience is better.

[0069] 7) 3D+ expansion display: the first projection light machine and the second projection light machine respectively output the first coincidence area image and the second coincidence area image with parallax in the overlapping area, and then output the 3D image in the overlapping area O, and the first projection light machine and the second projection light machine also respectively project the first non-coincidence area image and the second non-coincidence area image, or only display one of the first non-coincidence area and the second non-coincidence area image, which is mainly used for displaying the characteristic parameters and detailed information of the product 3D model in the overlapping area O; or in the game, the overlapping area O displays the 3D model of the game character and the prop, and the non-coincidence area displays the attribute parameters and information introduction of the corresponding game character and prop; or the overlapping area O is used for watching stereoscopic image video, and the non-coincidence area displays other information.

[0070] 8) Brightening+expansion display: the first projection light machine and the second projection light machine respectively output the first coincidence area image and the second coincidence area image, and the first projection light machine and the second projection light machine output the same two-dimensional plane image in the overlapping area O; and the first projection light machine and the second projection light machine also respectively project the first non-coincidence area image and the second non-coincidence area image, or only display one of the first non-coincidence area and the second non-coincidence area image, which is mainly used for displaying the key information and resident information corresponding to the display picture in the overlapping area O, and the other area displays secondary or scrolling and circulating information and the like.

[0071] It should be noted that for the first non-coincidence area image of the first projection light machine in the above embodiment, based on the Figure 2 It can be determined that there are two different areas A and B, and in the actual application process, the picture projected and output by the first projection light machine in the two areas can also be independently controlled, that is, the projection image can be projected to area A only, the projection image can be projected to area B only, or the projection image can be projected to area A and area B at the same time, and the application does not make specific limitation on this.

[0072] Similarly, the images corresponding to the non-coincidence areas C and D corresponding to the second projection light machine can also have similar projection modes, which will not be described in detail herein.

[0073] In addition, in the above embodiment, the first projection light machine and the second projection light machine are used as an example to describe the application, but the application is not limited to this. Figure 2The centers of the vertical screen display area and the horizontal screen display area corresponding to the first projection light machine and the second projection light machine in the display area shown are coincident, but in actual application, there can be a certain offset between the centers of the vertical screen display area and the horizontal screen display area of the two projection light machines in the vertical direction or the horizontal direction, which does not affect the implementation of the technical solution of the present application.

[0074] In addition, the implementation mode of the first projection light machine and the second projection light machine in various different combinations is mainly that the controller pre-processes the projection display image and then projects and displays the output through the two light machines. Taking the repeated brightening display of the overlapping area in the above-mentioned 4) as an example, the image to be displayed is cut into a square image, and then the first projection light machine and the second projection light machine simultaneously project and output the square image. Similarly, for other various display requirements, the controller can appropriately process the image to be displayed and projected to form an image meeting the projection display requirement, and then output the image through the first projection light machine and the second projection light machine. Therefore, the present application will not be described in detail.

[0075] In addition, the implementation mode of the first projection light machine and the second projection light machine in various different combinations is mainly that the controller pre-processes the projection display image and then projects and displays the output through the two light machines. Taking the repeated brightening display of the overlapping area in the above-mentioned 4) as an example, the image to be displayed is cut into a square image, and then the first projection light machine and the second projection light machine simultaneously project and output the square image. Similarly, for other various display requirements, the controller can appropriately process the image to be displayed and projected to form an image meeting the projection display requirement, and then output the image through the first projection light machine and the second projection light machine. Therefore, the present application will not be described in detail.

[0076] Based on the above description, in order to respectively realize the projection of the vertical screen display image and the horizontal screen display image by the first projection light machine 20 and the second projection light machine 30, the two projection light machines need to be installed in a specific manner. The following will be described with specific embodiments.

[0077] For the projection light machine, as shown in the structure schematic diagram of the projection light machine provided by the embodiments of the present application. Figure 3 Figure 3 In order to reduce the space volume occupied by the projection light machine as much as possible, the various components of the projection light machine are generally in a cuboid structure after compact assembly, and the projection image is projected from the smallest surface side of the cuboid structure. In order to facilitate understanding, in other various drawings of the present application, the projection light machine is generally represented as a cuboid structure.

[0078] In addition, generally, if the AR display device is AR glasses, the projection light machine can be arranged in the temple; if the AR display device is other head-mounted equipment, the projection light machine is often arranged at the end of the waveguide lens, and when the user wears the AR display device, the waveguide lens is generally located at the position of the user's temple. Obviously, if the size of the projection light machine is too large, it will obviously squeeze the user's temple to a certain extent, which will bring the user a bad use experience.

[0079] ​To this end, in one possible embodiment of the present application, the first projection light machine 20 is arranged with a first spatial plane one 201 perpendicular to the length direction of the waveguide lens 10, a first spatial plane two 202 perpendicular to the waveguide lens 10, and a first spatial plane three 203 parallel to the surface of the waveguide lens 10.

[0080] The first spatial plane one 201, the first spatial plane two 202, and the first spatial plane three 203 are three spatial planes of a minimum cuboid space containing the first projection light machine 20, and the first spatial plane three 203 is the surface of the first projection light machine 20 outputting the projection light.

[0081] As mentioned above, the projection light machine is generally in a cuboid structure, and for the convenience of description, the first projection light machine 20 can be regarded as a cuboid for description. The first spatial plane one 201, the first spatial plane two 202, and the first spatial plane three 203 of the minimum cuboid space containing the first projection light machine 20 are equivalent to three surfaces of the cuboid structure of the first projection light machine 20.

[0082] Referring to Figure 1 The first projection light machine 20 projects the projection image from the first spatial plane three 203, and the corresponding projection light spot has a large size in the long direction parallel to the first spatial plane three 203 and a small size in the short direction.

[0083] Therefore, the first spatial plane three 203 of the first projection light machine 20 can be directly opposite the waveguide lens 10, so that the projection light is directly projected onto the waveguide lens 10, and the first spatial plane one 201 of the first projection light machine 20 is parallel to the length direction of the waveguide lens 10. Obviously, at this time, the long direction of the first spatial plane three 203 of the first projection light machine 20 and the length direction of the waveguide lens are perpendicular to each other, and the short direction of the first spatial plane three 203 of the first projection light machine 20 and the length direction of the waveguide lens 10 are parallel to each other. At this time, the projection image directly projected by the first projection light machine 20 onto the waveguide lens 10 is a portrait image.

[0084] And according to the arrangement of the first projection light machine 20 in the embodiment, the first spatial plane one 201 of the first projection light machine has the largest area. When the user wears the AR display device, the first spatial plane one 201 should be parallel to the surface of the user's temple part, and has the smallest thickness in the direction perpendicular to the surface of the user's temple part. Therefore, the first projection light machine 20 can avoid pressing the user's temple part to a great extent, so as to ensure the comfort of the user wearing and using the AR display device.

[0085] Similarly, for the second projection light machine 30, it should be set symmetrically to the position of the first projection light machine 20 about the waveguide lens 10. In order to avoid the second projection light machine 30 from pressing the temple of the user on the other side when the user wears the AR display device, the second projection light machine 30 can also be set in the same way as in the above embodiment. Therefore, referring to Figure 4 , Figure 4 The setting structure diagram of the second projection light machine provided in the embodiment of the present application, in another optional embodiment of the present application, the second projection light machine 30 is set in a corresponding second spatial plane one 301 perpendicular to the length direction of the waveguide lens 10, a second spatial plane two 302 perpendicular to the waveguide lens 10, and a second spatial plane three 303 parallel to the surface of the waveguide lens 10;

[0086] Among them, the second spatial plane one 301, the second spatial plane two 302 and the second spatial plane three 303 are three spatial planes with areas decreasing in turn, which enclose the smallest cuboid space containing the second projection light machine 30, and the second spatial plane three 303 is the surface of the second projection light machine 30 outputting the projection light.

[0087] Referring to the above embodiment of the first projection light machine 20 and Figure 4 The second projection light machine 30 can also be regarded as a cuboid structure, and the second spatial plane one 301, the second spatial plane two 302 and the second spatial plane three 303 can be regarded as three surfaces of the cuboid structure with areas decreasing in turn.

[0088] Obviously, although the second projection light machine 30 in the embodiment can avoid pressing the head of the user to a certain extent, the projection image directly projected by the second projection light machine 30 to the waveguide lens 10 is a vertical screen image, which does not meet the requirement of horizontal screen display. Therefore, the second embodiment can further include a second reflection component between the second projection light machine 30 and the waveguide lens 10. Based on the basic optical knowledge of the reflection element, the reflection element can also fold, flip and the like to the transmission light path of the projection image to a certain extent in the process of reflecting the projection image. Therefore, in the embodiment, the second reflection component is set between the second projection light machine 30 and the waveguide lens 10, and the projection image output by the second projection light machine 30 is reflected and deflected by the second reflection component, and then enters the waveguide lens 10 in the form of a horizontal screen display image.

[0089] Optionally, referring to Figure 4 The second reflection component includes a first reflection surface 31, a second reflection surface 32 and a third reflection surface 33; the normal vector of the first reflection surface 31 is parallel to the second spatial plane one 301, and the first reflection surface 31 and the second spatial plane three 303 are at an angle of 45 degrees;

[0090] The normal vector of the second reflecting surface 32 is parallel to the second spatial plane three 303 and forms a 45-degree angle with the second spatial plane two 302.

[0091] The normal vector of the third reflecting surface 33 is parallel to the second spatial plane two 302, and the third reflecting surface 33 forms a 45-degree angle with the second spatial plane three 303.

[0092] Reference Figure 4 , Figure 4 The direction indicated by the arrow in the middle can be roughly regarded as the transmission path of the chief ray of the projection light ray output by the second projection light machine 30. The chief ray of the projection light ray output by the second projection light machine 30 first enters the first reflecting surface 31 at a 45-degree incident angle, is reflected and output by the first reflecting surface 31, and in this process, the projection image is flipped by 90 degrees. Then the first reflecting surface 31 reflects the projection light ray to the second reflecting surface 32 at a 45-degree incident angle, and the projection light ray is reflected and output by the second reflecting surface 32, and in this process, the projection image is flipped by 90 degrees again. On this basis, the chief ray of the projection light ray reflected and output by the second reflecting surface 32 is reflected to the third reflecting surface 33 at a 45-degree incident angle, and finally the third reflecting surface 33 reflects it and perpendicularly enters the waveguide lens 10, and in this process, the projection image is flipped by 90 degrees again and finally projected into the waveguide lens 10 in a horizontal screen mode.

[0093] In this embodiment, the projection second reflecting component is taken as an example, and the angle between the respective reflecting surfaces of the projection second reflecting component and the chief ray of the incoming projection light ray is 45 degrees. In actual application, the chief ray of the projection light ray does not necessarily enter the respective reflecting surfaces of the projection second reflecting component at a 45-degree incident angle. On this basis, according to different incident angles, the number of reflecting surfaces of the projection second reflecting component is not necessarily three, but can also be more. The second reflecting component shown in this embodiment is a kind of embodiment with relatively simple light path principle. For other forms of the second reflecting component, this application will not be enumerated and described one by one.

[0094] In addition, for the second reflecting component in this embodiment, three mirrors can be directly used as reflecting surfaces to realize the reflection of the projection image output by the second projection light machine. However, further considering the difficulty of fixing the relative positions of the multiple mirrors, a light-transmitting prism can also be directly used, wherein at least three surfaces of the prism satisfy the relative position relationship among the first reflecting surface 31, the second reflecting surface 32 and the third reflecting surface 33, and a high-reflection film layer is arranged on the three surfaces, that is, the three surfaces can also be used as the first reflecting surface 31, the second reflecting surface 32 and the third reflecting surface 33.

[0095] Based on the above discussion, to avoid the first projection optical engine 20 and the second projection optical engine 30 pressing on the user's temples when the user wears the AR display device, causing discomfort, the method is not limited to the arrangement of the first projection optical engine 20 and the second projection optical engine 30 in the above embodiments. In another optional embodiment of this application, it may further include:

[0096] The first projection optical engine 20 is attached to the waveguide lens 10 with the corresponding first spatial plane 1 201, the first spatial plane 202 is perpendicular to the surface of the waveguide lens 10, and the first spatial plane 3 203 is perpendicular to the length direction of the waveguide lens 10.

[0097] like Figure 5 As shown, it is clear that the direction of the principal ray of the projection light output by the first projection optical engine 20 in this embodiment is not perpendicular to the waveguide lens 10 but parallel to it. Therefore, this embodiment further includes a first reflecting component 21 disposed between the first projection optical engine 20 and the waveguide lens 10, used to reflect the projection light output by the first projection optical engine 20 and project it onto the waveguide lens 10. At this time, it is only necessary to directly deflect the projection light output by the first projection optical engine 20 by 90 degrees. Therefore, the first reflecting component 21 in this embodiment can be a mirror, forming a 45-degree angle with both the waveguide lens 10 and the first spatial plane 203, thus deflecting the light output by the first projection optical engine 20 and projecting it into the waveguide lens 10 in a vertical orientation.

[0098] At this point, the first projection optical engine 20 in this embodiment is attached to the waveguide lens 10 and has the smallest thickness in the direction perpendicular to the waveguide lens 10. When the user wears the AR display device, the first projection optical engine 20 is located approximately at the user's brow bone, thus completely avoiding pressure on the user's temple area. Furthermore, the first projection optical engine 20 has the smallest thickness in the direction perpendicular to the surface of the waveguide lens 10, which to some extent avoids pressure on the user's brow bone area, thereby ensuring the user's comfort when wearing the AR display device.

[0099] Similarly, in another optional embodiment of this application, the second projection optical engine 30 can be attached to the waveguide lens 10 with the corresponding second spatial plane 1 301, the second spatial plane 2 302 perpendicular to the waveguide lens 20, and the second spatial plane 3 303 perpendicular to the length direction of the waveguide lens 10.

[0100] The second spatial plane one 301, the second spatial plane two 302 and the second spatial plane three 303 are three spatial planes with areas decreasing in sequence, and the second spatial plane three 303 is the surface of the second projection light machine 30 outputting the projection light. Apparently, the second projection light machine 30 is arranged in the same way as the first projection light machine 20 in the above embodiment, and is located at the position of the user's eyebrow when the user wears the AR display device, and the thickness in the direction perpendicular to the waveguide lens 10 is the smallest, thereby avoiding pressing the user's head.

[0101] However, the second projection light machine 30 needs to project the horizontal screen display image to the waveguide lens 10. Therefore, the second reflection component between the second projection light machine 30 and the waveguide lens 10 is further included in the embodiment, for projecting the vertical screen display image output by the second projection light machine 30 on the waveguide lens 10.

[0102] Because the second projection light machine 30 needs to project the horizontal screen display image to the waveguide lens 10, the reflection component with only one reflection surface cannot be used as the second reflection component. Alternatively, referring to Figure 6 , the second reflection component can include the first reflection surface 31 and the second reflection surface 32.

[0103] The normal vector of the first reflection surface 31 is parallel to the second spatial plane one 301 and forms a 45-degree angle with the second spatial plane three 303.

[0104] The normal vector of the second reflection surface 32 is parallel to the second spatial plane three 303 and forms a 45-degree angle with the second spatial plane one 301.

[0105] Referring to Figure 6 , the projection light output by the second projection light machine 30 is reflected by the first reflection surface 31 and is turned by 90 degrees, and is reflected by the second reflection surface 32 and is turned by 90 degrees again, thereby being projected on the waveguide lens 10 in the horizontal screen display mode. The main light of the second projection light machine 30 is incident on each reflection surface at an angle of 45 degrees. Similarly to the above embodiment, the second reflection component in the embodiment can include more reflection surfaces, and the main light of the second projection light machine 30 is incident on each reflection surface at an angle of 45 degrees. In actual application, the angle can be adjusted appropriately, as long as the second reflection component can project the projection image output by the second projection light machine 30 on the waveguide lens 10 in the horizontal screen display mode. Therefore, the embodiment does not make specific limitation.

[0106] Based on the above various embodiments, the setting mode of the first projection light machine 20 and the second projection light machine 30 in the present application can contain a plurality of types, and in actual application, the installation setting mode of the first projection light machine 20 and the second projection light machine 30 can be the same or different, as long as it can ensure that the first projection light machine 20 and the second projection light machine 30 do not extrude the user's head when the user wears the AR display device.

[0107] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device inherent to the series of elements. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, the above technical solutions provided by the embodiments of the present application have not been described in detail, so as not to be too verbose.

[0108] The principles and implementation modes of the present application are described by applying specific examples in this document, and the above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An AR display device, characterized by, The application relates to a waveguide lens, a first projection light machine and a second projection light machine arranged on the two sides of the waveguide lens respectively, and a controller connected with the first projection light machine and the second projection light machine respectively. The first projection light machine is used for projecting a portrait image to the waveguide lens. The second projection light machine is used for projecting a landscape image to the waveguide lens. The controller is used for controlling the opening and closing of the first projection light machine and the second projection light machine. The controller is also used for controlling the first projection light machine to project and display a first overlapping area image and a first non-overlapping area image. The controller is also used for controlling the second projection light machine to project and display a second overlapping area image and a second non-overlapping area image. The first overlapping area and the second overlapping area are images of image pictures displayed in the overlapping area of the portrait image and the landscape image; the first non-overlapping area image is an image displayed in a non-overlapping area of the display area of the portrait image; and the second non-overlapping area image is an image displayed in a non-overlapping area of the display area of the landscape image. Correspondingly, the controller is also used for controlling the first projection light machine to only project and output the first overlapping area image or only output the first non-overlapping area image of the display area of the portrait image. The controller is also used for controlling the second projection light machine to only output the second overlapping area image or only output the second non-overlapping area image of the display area of the landscape image.

2. The AR display device of claim 1, wherein, The controller is used for independently controlling the opening and closing of the first projection light machine and the second projection light machine.

3. The AR display device of claim 1, wherein, The controller is used for controlling the first projection light machine and the second projection light machine to be opened simultaneously, so as to obtain a stereoscopic projection image formed by the superposition of the projection images output by the first projection light machine and the second projection light machine respectively.

4. The AR display device of claim 1, wherein, The first projection light machine is arranged in a corresponding first space plane one perpendicular to the length direction of the waveguide lens, a first space plane two perpendicular to the waveguide lens, and a first space plane three parallel to the surface of the waveguide lens; the first space plane one, the first space plane two and the first space plane three are three space planes with areas decreasing in sequence, and the first space plane three is the surface of the first projection light machine outputting projection light.

5. The AR display device of claim 1, wherein, The first projection light machine is arranged in a corresponding first space plane one adhering to the waveguide lens, a first space plane two perpendicular to the surface of the waveguide lens, and a first space plane three perpendicular to the length direction of the waveguide lens. The application further comprises a first reflection component arranged between the first projection light machine and the waveguide lens, which is used for reflecting the projection light output by the first projection light machine and projecting and incident to the waveguide lens.

6. The AR display device of claim 1, wherein, The second projection light machine is arranged in a corresponding second space plane one perpendicular to the length direction of the waveguide lens, a second space plane two perpendicular to the waveguide lens, and a second space plane three parallel to the surface of the waveguide lens; wherein the second space plane one, the second space plane two, and the second space plane three are three space planes with areas decreasing in sequence, which enclose the smallest cuboid space accommodating the second projection light machine, and the second space plane three is the surface of the second projection light machine outputting the projection light; Further comprising a second reflection component arranged between the second projection light machine and the waveguide lens, for reflecting the projection light output by the second projection light machine and then entering the waveguide lens.

7. The AR display device of claim 6, wherein, The second reflection component comprises a first reflection surface, a second reflection surface, and a third reflection surface; The normal vector of the first reflection surface is parallel to the second space plane one, and the first reflection surface and the second space plane three form a 45-degree angle; The normal vector of the second reflection surface is parallel to the second space plane three, and the second reflection surface and the second space plane two form a 45-degree angle; The normal vector of the third reflection surface is parallel to the second space plane two, and the third reflection surface and the second space plane three form a 45-degree angle.

8. The AR display device of claim 1, wherein, The second projection light machine is arranged in a corresponding second space plane one adhering to the waveguide lens, a second space plane two perpendicular to the waveguide lens, and a second space plane three perpendicular to the length direction of the waveguide lens; wherein the second space plane one, the second space plane two, and the second space plane three are three space planes with areas decreasing in sequence, which enclose the smallest cuboid space accommodating the second projection light machine, and the second space plane three is the surface of the second projection light machine outputting the projection light; Further comprising a second reflection component arranged between the second projection light machine and the waveguide lens, for reflecting the projection light output by the second projection light machine and then entering the waveguide lens.

9. The AR display device of claim 8, wherein, The second reflection component comprises a first reflection surface and a second reflection surface; The normal vector of the first reflection surface is parallel to the second space plane one, and the first reflection surface and the second space plane three form a 45-degree angle; The normal vector of the second reflection surface is parallel to the second space plane three, and the second reflection surface and the second space plane one form a 45-degree angle.

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