Display device and augmented reality display apparatus

Abstract

The application provides a display device and an augmented reality display device, wherein the display device comprises a display module, a light splitting module, a first waveguide and a second waveguide, the display module is used for emitting imaging beams, the imaging beams comprise first imaging beams and second imaging beams, and the wavelength range of the first imaging beams is different from the wavelength range of the second imaging beams; the light splitting module is arranged on the light emitting path of the imaging beams and is used for splitting the incident imaging beams into two imaging beams, and the two imaging beams propagate along a first light path and a second light path respectively; the first waveguide is arranged on the first light path, a first filter is arranged on the transmission path of the first waveguide, and the first filter is used for screening out and emitting the first imaging beams to the left eye; and the second waveguide is arranged on the second light path, a second filter is arranged on the transmission path of the second waveguide, and the second filter is used for screening out and emitting the second imaging beams to the right eye. The technical scheme of the application can realize the effect of stereoscopic display through a single display module.

Description

Technical Field

[0001] The present invention relates to the field of AR glasses optical imaging display technology, and in particular to a display device and an augmented reality display equipment. Background Art

[0002] To achieve lightweight display designs, related technologies often employ a single-lens camera solution, whereby a single camera simultaneously projects images to both eyes. However, since a single-lens camera can typically only display one image at a time, projecting images to both eyes simultaneously results in each eye seeing the same image, preventing parallax between the left and right eyes and thus preventing the stereoscopic display effect. Summary of the Invention

[0003] The main purpose of the present invention is to provide a display device and an augmented reality display apparatus, aiming to achieve a stereoscopic display effect through a solution of a single display module.

[0004] To achieve the above-mentioned object, the present invention provides a display device comprising:

[0005] a display module configured to emit an imaging beam, wherein the imaging beam includes a first imaging beam and a second imaging beam, and the wavelength range of the first imaging beam is different from the wavelength range of the second imaging beam;

[0006] a light splitting module, the light splitting module being provided on the light exit path of the imaging light beam, and being used for splitting the incident imaging light beam into two imaging light beams, the two imaging light beams propagating along a first light path and a second light path respectively;

[0007] a first waveguide, the first waveguide being disposed on the first optical path, and a first filter being disposed on the transmission path of the first waveguide for filtering and coupling out the first imaging light beam to the left eye; and

[0008] A second waveguide is provided on the second optical path. A second filter is provided on the transmission path of the second waveguide for filtering out and coupling out the second imaging light beam to the right eye.

[0009] Optionally, the first waveguide includes a first substrate and a first coupling-in region and a first coupling-out region provided on the first substrate, the first coupling-in region is provided corresponding to the first optical path, and the first coupling-out region and the first coupling-in region are provided at intervals.

[0010] Optionally, the first filter component is arranged upstream of the first coupling-in region or downstream of the first coupling-out region.

[0011] Optionally, the second waveguide includes a second substrate and a second coupling-in region and a second coupling-out region provided on the second substrate, the second coupling-in region is provided corresponding to the second optical path, and the second coupling-out region and the second coupling-in region are spaced apart.

[0012] Optionally, the second filtering component is arranged upstream of the second coupling-in region or downstream of the second coupling-out region.

[0013] Optionally, the first waveguide and / or the second waveguide is a single-layer optical waveguide.

[0014] Optionally, the display module includes a red light unit, a green light unit and a blue light unit, configured to emit red light, green light and blue light respectively;

[0015] The first imaging light beam is one of red light, green light and blue light, and the second imaging light beam is correspondingly one of green-blue light, red-blue light and red-green light.

[0016] Optionally, the first imaging beam is one of red light and green light, and the second imaging beam is the other of red light and green light;

[0017] And / or, the first imaging light beam is one of red light and blue light, and the second imaging light beam is the other of red light and blue light;

[0018] And / or, the first imaging light beam is one of green light and blue light, and the second imaging light beam is the other of green light and blue light.

[0019] Optionally, the first waveguide and the second waveguide are arranged side by side, and the display module is arranged at a position directly opposite to the middle of the first waveguide and the second waveguide;

[0020] And / or, the first filter is attached to the first waveguide;

[0021] And / or, the second filter component is attached to the second waveguide.

[0022] The present invention further provides an augmented reality display device, comprising any one of the aforementioned display devices, wherein the display device comprises:

[0023] a display module configured to emit an imaging beam, wherein the imaging beam includes a first imaging beam and a second imaging beam, and the wavelength range of the first imaging beam is different from the wavelength range of the second imaging beam;

[0024] a light splitting module, the light splitting module being provided on the light exit path of the imaging light beam, and being used for splitting the incident imaging light beam into two imaging light beams, the two imaging light beams propagating along a first light path and a second light path respectively;

[0025] a first waveguide, the first waveguide being disposed on the first optical path, and a first filter being disposed on the transmission path of the first waveguide for filtering and coupling out the first imaging light beam to the left eye; and

[0026] A second waveguide is provided on the second optical path. A second filter is provided on the transmission path of the second waveguide for filtering out and coupling out the second imaging light beam to the right eye.

[0027] According to the technical solution of the present invention, the imaging light beam emitted by a single display module includes a first imaging light beam and a second imaging light beam having different wavelength ranges. The imaging light beam can be decomposed into two optical paths in different directions under the spectroscopic effect of the spectroscopic module and transmitted to the first waveguide and the second waveguide respectively. The transmission paths of the first waveguide and the second waveguide are respectively provided with a first filter and a second filter. The first filter and the second filter can selectively transmit the imaging light beam having a specific wavelength. Therefore, the imaging light beam having the first wavelength and the imaging light beam having the second wavelength can be transmitted to the left and right eyes of the user respectively through the first waveguide and the second waveguide, so that the display device can simultaneously project different images to the left and right eyes of the user through a single display module. This can simulate the situation where there is a difference in the images on the retinas of the left and right eyes when a person is looking at an object, so that the human brain can judge the spatial position relationship of the object based on the difference in the images at the left and right eyes, thereby producing stereoscopic vision. That is, the technical solution of the present invention can project different images to the left and right eyes respectively through a single display module, so as to form parallax between the left and right eyes due to the difference in the left and right eye images, thereby achieving a stereoscopic display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Figure 1 FIG. 1 is a structural diagram of a display device according to an embodiment of the present invention.

[0030] Description of Figure Numbers:

[0031]

[0032]

[0033] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] The display device of a traditional augmented reality display device generally adopts a dual-optical machine solution, that is, two optical machines are used to project images to the left and right eyes of a person respectively, and the two optical machines are used to render the images projected to the left and right eyes respectively through an algorithm, so that the left and right eyes can form parallax, thereby achieving a stereoscopic display effect. However, the solution of adopting a dual-optical machine will increase the weight and volume of the augmented reality display device, which is not conducive to lightweight design. For this reason, in the related art, the display device can also adopt a single-optical machine solution for display, that is, one optical machine is used to project images to the left and right eyes of a person at the same time. However, since a single-optical machine can usually only display one display screen at the same time, when a single-optical machine is used to project images to the left and right eyes of a person at the same time, the left and right eyes will see the same display screen, and parallax cannot be formed between the left and right eyes. Therefore, since the single-optical machine only has one display screen, the stereoscopic display effect cannot be achieved. Therefore, the present invention proposes a display device, which simultaneously emits a first imaging light beam and a second imaging light beam with different wavelength ranges through a display module, so that the light beams of the pictures input to the left and right eyes can be filtered by filtering the wavelength range, so that the display device can simultaneously project different images to the left and right eyes of a person through a single display module. This can simulate the situation where there is a difference in the images on the retinas of the left and right eyes when a person is looking at an object, so that the human brain can judge the spatial position relationship of the object according to the difference in the images at the left and right eyes, thereby causing the person to have stereoscopic vision. That is, the technical solution of the present invention can project different images to the left and right eyes respectively through a single display module 10, so that the left and right eyes form parallax due to the difference in the images of the left and right eyes, thereby causing the left and right eyes to form parallax and produce a stereoscopic effect, thereby better achieving the purpose of augmented reality.

[0039] Please combine Figure 1 In some embodiments of the display device 100 of the present invention, the display device 100 includes:

[0040] A display module 10, wherein the display module 10 is configured to emit an imaging light beam, wherein the imaging light beam includes a first imaging light beam and a second imaging light beam, and the wavelength range of the first imaging light beam is different from the wavelength range of the second imaging light beam;

[0041] A light splitting module 20 is provided on the light exit path of the imaging light beam, and is used to split the incident imaging light beam into two imaging light beams, which propagate along a first light path and a second light path respectively;

[0042] a first waveguide 30 , wherein the first waveguide 30 is disposed on the first optical path, and a first filter 40 is disposed on the transmission path of the first waveguide 30 , for filtering and emitting the first imaging light beam to the left eye; and

[0043] The second waveguide 50 is provided on the second optical path. A second filter 60 is provided on the transmission path of the second waveguide 50 for filtering and emitting the second imaging light beam to the right eye.

[0044] In this embodiment, the display module 10 is used to generate an imaging beam that forms a virtual image, and the imaging beam includes a first imaging beam and a second imaging beam having different wavelength ranges. The light splitting module 20 can be configured as a beam splitter to decompose the imaging beam emitted by the display module 10 into two light beams. The two light beams are transmitted along the first and second light paths, respectively, and are emitted in parallel and collimated into the first waveguide 30 and the second waveguide 50. A first filter 40 is provided on the transmission path of the first waveguide 30, capable of transmitting light beams having a specific wavelength, thereby filtering out and emitting the first imaging beam to the left eye. A second filter 60 is provided on the transmission path of the second waveguide 50, capable of transmitting light beams having a specific wavelength, thereby filtering out and emitting the second imaging beam to the right eye. This enables binocular display of the display module 10.

[0045] Among them, the first waveguide 30 and the second waveguide 50 can both be set as diffraction waveguides, which can use the diffraction effect to guide and control the propagation of light. The first waveguide 30 and the second waveguide 50 can also both be set as geometric waveguides, which use the principle of total reflection to guide the propagation of light. This is not limited here.

[0046] It should be noted that the display module 10 can be configured as an RGB display. The image displayed on the RGB display can be divided into three RGB channels, which can be used to emit RGB light. Since the wavelength ranges of the RGB light are different, the imaging light beams can be differentiated by wavelength range. That is, the display module 10 can be divided into two display sections based on the different wavelength ranges, each used to display two different images. This allows the two different images to be processed for stereoscopic display using an algorithm and projected onto the RGB display. In this way, the light emitted by the two display sections is respectively emitted to the left and right eyes through total internal reflection of the first waveguide 30 and the second waveguide 50, so that the left and right eyes receive two different images, forming binocular parallax and producing a stereoscopic image.

[0047] Please combine Figure 1 In some embodiments of the display device 100 of the present invention, the first waveguide 30 includes a first substrate 31 and a first coupling-in region 32 and a first coupling-out region 33 provided on the first substrate 31, the first coupling-in region 32 is provided corresponding to the first optical path, and the first coupling-out region 33 and the first coupling-in region 32 are provided at intervals.

[0048] In this embodiment, the first waveguide 30 includes a first substrate 31 and a first incoupling region 32 and a first outcoupling region 33 disposed on the first substrate 31. The first incoupling region 32 is disposed corresponding to the first optical path and is configured to receive the imaging light beam transmitted along the first optical path. The first outcoupling region 33 is spaced apart from the first incoupling region 32. The first incoupling region 32 is provided with an incoupling grating for changing the incident angle of incident light entering the first substrate 31, thereby causing the incident angle to be greater than or equal to a critical angle, thereby allowing the incident light to undergo total internal reflection within the first substrate 31 and complete light transmission. The first outcoupling region 33 is provided with an outcoupling grating. When light coupled into the first substrate 31 by the incoupling grating strikes the outcoupling grating of the first outcoupling region 33, its incident angle is further deflected, so that it is emitted to form a display image that is captured by the human eye.

[0049] The coupling-in grating and the coupling-out grating can be imprinted on the first substrate 31 as separate optical elements, or can be formed into the coupling-in grating and the coupling-out grating structures respectively on the first coupling-in region 32 and the first coupling-out region 33 of the first substrate 31, which is not limited here.

[0050] Please combine Figure 1 In some embodiments of the display device 100 of the present invention, the first filter element 40 is disposed upstream of the first coupling-in region 32 or downstream of the first coupling-out region 33 .

[0051] In this embodiment, the first filter element 40 is disposed along the transmission path of the first waveguide 30 and can filter the imaging beam emitted from the display module 10 by transmitting light beams within a specific wavelength range. In one embodiment, the first filter element 40 is disposed upstream of the first incoupling region 32 to filter the imaging beam coupled into the first waveguide 30 into the first imaging beam. In another embodiment, the first filter element 40 is disposed downstream of the first outcoupling region 33 to convert the imaging beam coupled out of the first waveguide 30 into the first imaging beam, thereby transmitting only the first imaging beam to the left eye. This is not a limitation herein.

[0052] Among them, the first filter element 40 can be set as a bandpass filter, which can only transmit color light within a specific wavelength range; the first filter element 40 can also be set as a cutoff filter, which is used to cut off the transmission of color light outside a specific wavelength range, which is not limited here.

[0053] Please combine Figure 1 In some embodiments of the display device 100 of the present invention, the second waveguide 50 includes a second substrate 51 and a second coupling-in region 52 and a second coupling-out region 53 provided on the second substrate 51, the second coupling-in region 52 is provided corresponding to the second optical path, and the second coupling-out region 53 and the second coupling-in region 52 are provided at intervals.

[0054] In this embodiment, the second waveguide 50 includes a second substrate 51 and a second incoupling region 52 and a second outcoupling region 53 provided on the second substrate 51. The second incoupling region 52 is provided corresponding to the second optical path and is configured to receive the imaging light beam transmitted along the second optical path. The second outcoupling region 53 and the second incoupling region 52 are spaced apart. Similarly, the second incoupling region 52 is provided with an incoupling grating for changing the incident angle of incident light entering the interior of the second substrate 51, thereby making the incident angle greater than or equal to a critical angle, so that the incident light can be totally reflected within the second substrate 51, completing light transmission. The second outcoupling region 53 is provided with an outcoupling grating. When light coupled into the second substrate 51 by the incoupling grating strikes the outcoupling grating of the second outcoupling region 53, its incident angle is further deflected, so that it is emitted to form a display image that is captured by the human eye.

[0055] The coupling-in grating and the coupling-out grating can be imprinted on the second substrate 51 as separate optical elements, or can be formed into the coupling-in grating and the coupling-out grating structures in the second coupling-in region 52 and the second coupling-out region 53 of the second substrate 51, respectively, which is not limited here.

[0056] Please combine Figure 1 In some embodiments of the display device 100 of the present invention, the second filter element 60 is disposed upstream of the second coupling-in region 52 or downstream of the second coupling-out region 53 .

[0057] In this embodiment, the second filter 60 is disposed along the transmission path of the second waveguide 50 and can filter the imaging beam emitted from the display module 10 by transmitting light beams within a specific wavelength range. In one embodiment, the second filter 60 is disposed upstream of the second incoupling region 52 to filter the imaging beam coupled into the second waveguide 50 into a second imaging beam. In another embodiment, the second filter 60 is disposed downstream of the second outcoupling region 53 to convert the imaging beam coupled out of the second waveguide 50 into a second imaging beam, thereby allowing only the first imaging beam to be transmitted to the right eye. This is not a limitation herein.

[0058] Among them, the second filter element 60 can be set as a bandpass filter, which can only transmit color light within a specific wavelength range; the second filter element 60 can also be set as a cutoff filter, which is used to cut off the transmission of color light outside the specific wavelength range, which is not limited here.

[0059] Please combine Figure 1 In some embodiments of the display device 100 of the present invention, the first waveguide 30 and / or the second waveguide 50 is a single-layer optical waveguide.

[0060] In this embodiment, both the first waveguide 30 and the second waveguide 50 utilize single-layer optical waveguides to transmit the imaging beam. This approach, compared to solutions that utilize double-layer grating waveguides for imaging, results in poor full-color image uniformity due to the inherent design and manufacturing challenges of double-layer grating waveguides. Therefore, the present invention utilizes single-layer optical waveguides for the first and second waveguides 30 and 50, improving image uniformity and enhancing the user experience of augmented reality displays.

[0061] On this basis, since the first filter element 40 located on the transmission path of the first waveguide 30 and the second filter element 60 located on the transmission path of the second waveguide 50 can respectively filter light beams of different wavelength ranges, the images coupled into the left and right eyes can have different colors, respectively. This can further realize the function of classifying information by color, thereby improving the practicality and functionality of the augmented reality display device.

[0062] In some embodiments of the display device 100 of the present invention, the display module 10 includes a red light unit, a green light unit, and a blue light unit, configured to emit red light, green light, and blue light, respectively. The first imaging beam is one of red light, green light, and blue light, and the second imaging beam is one of green-blue light, red-blue light, and red-green light.

[0063] And / or, the first imaging light beam is one of red light and green light, and the second imaging light beam is the other of red light and green light;

[0064] And / or, the first imaging light beam is one of red light and blue light, and the second imaging light beam is the other of red light and blue light;

[0065] And / or, the first imaging light beam is one of green light and blue light, and the second imaging light beam is the other of green light and blue light.

[0066] In this embodiment, the display module 10 can be an RGB display screen, which includes a red light unit, a green light unit, and a blue light unit, which are used to emit red light, green light, and blue light, respectively. The wavelength ranges of the red light, green light, and blue light are different. In this way, a filter can be set to screen the wavelengths in a specific range so that the wavelengths of the light beams coupled into the left and right eyes by the first waveguide 30 and the second waveguide 50 are different. Therefore, the light beams coupled into the left and right eyes by the first waveguide 30 and the second waveguide 50 are different colors. In this way, the different-colored images seen by the left and right eyes can form parallax to synthesize a three-dimensional image, thereby improving the augmented reality experience.

[0067] Among them, the red light unit, the green light unit and the blue light unit can be divided into two groups, for example, one group is monochromatic light and the other group is bicolor light. The monochromatic light can be one of red light, green light and blue light to form a first imaging beam, and the bicolor light can correspond to one of green-blue light, red-blue light and red-green light to form a second imaging beam.

[0068] Of course, in another embodiment, the red light unit, the green light unit, and the blue light unit may only use two monochromatic light units, for example, the first imaging beam and the second imaging beam are set to red light and green light, red light and blue light, and green light and blue light, respectively, which is not limited here.

[0069] Please combine Figure 1 In some embodiments of the display device 100 of the present invention, the first waveguide 30 and the second waveguide 50 are arranged side by side, and the display module 10 is arranged at a middle position opposite to the first waveguide 30 and the second waveguide 50.

[0070] In this embodiment, the first waveguide 30 and the second waveguide 50 are arranged side by side and correspond to the positions of the left and right eyes of the user respectively. The display module 10 is arranged at a position directly in the middle of the first waveguide 30 and the second waveguide 50, so that the display module 10 and the spectroscopic module 20 can roughly correspond to the position of the user's nose bridge. Moreover, compared with the setting scheme of the dual-light machine, the space volume and weight occupied by a single display module 10 and a single spectroscopic module 20 are smaller, and are less likely to interfere with the line of sight of the human eye. In addition, the power consumption of the display device 100 can be reduced to a certain extent, which is conducive to realizing a lightweight design of the augmented reality display device and can improve the wearing experience of the reality display device to a certain extent.

[0071] In some embodiments of the display device 100 of the present invention, the first filter element 40 is attached to the first waveguide 30 .

[0072] And / or, the second filter element 60 is attached to the second waveguide 50 .

[0073] In this embodiment, the first filter can be a standalone optical element, or it can be a film layer plated or applied to the surface of the first waveguide 30. This allows the first filter and the first waveguide 30 to be arranged compactly, thereby reducing the space occupied by the screen module. The first filter can be attached to the first coupling-in region 32 or the first coupling-out region 33 of the first waveguide 30, without limitation.

[0074] Similarly, the second filter can be a standalone optical element or a film layer plated or applied to the surface of the first waveguide 30. This allows the second filter and second waveguide 50 to be arranged compactly, reducing the space occupied by the screen module. The second filter can be attached to the second incoupling region 52 or the second outcoupling region 53 of the second waveguide 50.

[0075] The present invention further provides an augmented reality display device, comprising the display device 100 described in any of the aforementioned embodiments. The specific structure of the display device 100 is as described in any of the aforementioned embodiments. Since the augmented reality display device proposed in this application can apply all of the technical solutions in all of the aforementioned embodiments, it at least has all of the beneficial effects brought about by the aforementioned technical solutions, which will not be detailed here.

[0076] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A stereoscopic display device, characterized in that: include: a display module configured to emit an imaging beam, wherein the imaging beam includes a first imaging beam and a second imaging beam, and the wavelength range of the first imaging beam is different from the wavelength range of the second imaging beam; a light splitting module, the light splitting module being provided on the light exit path of the imaging light beam, and being used for splitting the incident imaging light beam into two imaging light beams, the two imaging light beams propagating along a first light path and a second light path respectively; a first waveguide, the first waveguide being disposed on the first optical path, and a first filter being disposed on the transmission path of the first waveguide for filtering and emitting the first imaging light beam to the left eye; as well as A second waveguide is provided on the second optical path. A second filter is provided on the transmission path of the second waveguide for filtering out and emitting the second imaging light beam to the right eye.

2. The display device according to claim 1, wherein The first waveguide includes a first substrate and a first coupling-in region and a first coupling-out region provided on the first substrate. The first coupling-in region is provided corresponding to the first optical path, and the first coupling-out region and the first coupling-in region are spaced apart.

3. The display device according to claim 2, wherein The first filter component is disposed upstream of the first incoupling region or downstream of the first outcoupling region.

4. The display device according to claim 1, wherein The second waveguide includes a second substrate and a second coupling-in region and a second coupling-out region provided on the second substrate. The second coupling-in region is provided corresponding to the second optical path, and the second coupling-out region and the second coupling-in region are spaced apart.

5. The display device according to claim 4, wherein The second filter element is disposed upstream of the second incoupling region or downstream of the second outcoupling region.

6. The display device according to any one of claims 1 to 5, wherein: The first waveguide and / or the second waveguide is a single-layer optical waveguide.

7. The display device according to any one of claims 1 to 5, wherein: The display module includes a red light unit, a green light unit and a blue light unit, which are used to emit red light, green light and blue light respectively; The first imaging light beam is one of red light, green light and blue light, and the second imaging light beam is correspondingly one of green-blue light, red-blue light and red-green light.

8. The display device according to any one of claims 1 to 5, wherein: The first imaging light beam is one of red light and green light, and the second imaging light beam is the other of red light and green light; Alternatively, the first imaging light beam is one of red light and blue light, and the second imaging light beam is the other of red light and blue light; Alternatively, the first imaging light beam is one of green light and blue light, and the second imaging light beam is the other of green light and blue light.

9. The display device according to any one of claims 1 to 5, wherein: The first waveguide and the second waveguide are arranged side by side, and the display module is arranged at a position between the first waveguide and the second waveguide; And / or, the first filter is attached to the first waveguide; And / or, the second filter component is attached to the second waveguide.

10. An augmented reality display device, characterized in that: The display device according to any one of claims 1 to 9.

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