Display and imaging integrated system and intelligent wearable device

Abstract

The utility model relates to the technical field of intelligent wearable equipment, and provides a display and imaging integrated system and intelligent wearable equipment. The display and imaging integrated system comprises an optical machine, a camera module, an optical waveguide, a coupling-in grating, a coupling-out grating and a zoom piece; light machine light of the light machine is coupled into the optical waveguide through the coupling-in grating and is coupled out through the coupling-out grating; the zooming piece is located on the side, away from the wearer, of the coupling-out grating, the zooming piece is used for collimating ambient light, and the coupling-out grating is further used for coupling shooting light into the optical waveguide; the camera module and the optical machine are located on the two opposite sides of the coupling-in grating, the coupling-in grating is further used for coupling the camera light out of the optical waveguide, and the camera light coupled out through the coupling-in grating is received by the camera module. According to the display and imaging integrated system and the intelligent wearable device provided by the utility model, the defect that the size and the weight of glasses are increased when the display lens module and the camera module of the existing intelligent wearable device exist at the same time is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent wearable equipment technical field especially, relate to a kind of display and imaging integrated system and intelligent wearable equipment. BACKGROUND

[0002] Augmented reality glasses (AR) and mixed reality glasses (XR) and other intelligent wearable equipment can integrate virtual content with real world, widely used in industrial manufacturing, medical treatment, entertainment, design and daily life and other fields, to improve work efficiency and quality of life. In recent years, these devices have received great attention in the industry and consumer electronics industry.

[0003] These devices are usually equipped with lens module that can display virtual images in front of user's eyes, while allowing users to see the actual external environment through the lens. In order to record the outside scene, AR and XR glasses may also add a camera module. However, when display lens module and camera module exist at the same time, it will cause the volume and weight of glasses to increase. SUMMARY

[0004] The utility model provides a kind of display and imaging integrated system and intelligent wearable equipment, to solve the defect that when display lens module and camera module exist at the same time in existing intelligent wearable equipment, it will cause the volume and weight of glasses to increase.

[0005] The utility model provides a kind of display and imaging integrated system in one aspect, comprising: optical machine, camera module, optical waveguide, coupling-in grating, coupling-out grating and zooming part.

[0006] The coupling-in grating and the coupling-out grating are both arranged in the optical waveguide, the optical machine light passes through the coupling-in grating and is coupled into the optical waveguide, and is coupled out through the coupling-out grating;The zooming part is located on the side of the coupling-out grating away from the wearer, and the zooming part is used for collimating ambient light, and the coupling-out grating is also used for coupling camera light into the optical waveguide;The camera module and the optical machine are located on the opposite sides of the coupling-in grating, the coupling-in grating is also used for coupling the camera light out of the optical waveguide, and the camera light coupled out of the coupling-in grating is received by the camera module.

[0007] According to the display and imaging integrated system provided by the utility model, the zooming part has a power-on state and a power-off state, wherein the zooming part collimates the ambient light in the power-on state, and the ambient light transmits through the zooming part in the power-off state.

[0008] According to the display and imaging integrated system provided by the utility model, the zooming part is a liquid crystal lens.

[0009] The display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zooming part, and the electric control module is used for controlling the zooming part to switch between the power-on state and the power-off state, so that the zooming part is in the power-on state in a camera shooting scene and is in the power-off state in a virtual reality scene.

[0010] The display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zooming part, and the electric control module is used for controlling the zooming part to switch between the power-on state and the power-off state, so that the zooming part is in the power-on state in a camera shooting scene and is in the power-off state in a virtual reality scene.

[0011] The display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zooming part, and the electric control module is used for controlling the zooming part to switch between the power-on state and the power-off state, so that the zooming part is in the power-on state in a camera shooting scene and is in the power-off state in a virtual reality scene.

[0012] The display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zooming part, and the electric control module is used for controlling the zooming part to switch between the power-on state and the power-off state, so that the zooming part is in the power-on state in a camera shooting scene and is in the power-off state in a virtual reality scene.

[0013] The display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zooming part, and the electric control module is used for controlling the zooming part to switch between the power-on state and the power-off state, so that the zooming part is in the power-on state in a camera shooting scene and is in the power-off state in a virtual reality scene.

[0014] The display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zooming part, and the electric control module is used for controlling the zooming part to switch between the power-on state and the power-off state, so that the zooming part is in the power-on state in a camera shooting scene and is in the power-off state in a virtual reality scene.

[0015] The display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zooming part, and the electric control module is used for controlling the zooming part to switch between the power-on state and the power-off state, so that the zooming part is in the power-on state in a camera shooting scene and is in the power-off state in a virtual reality scene.

[0016] The display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zooming part, and the electric control module is used for controlling the zooming part to switch between the power-on state and the power-off state, so that the zooming part is in the power-on state in a camera shooting scene and is in the power-off state in a virtual reality scene.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described in the following are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0019] Figure 1 is a schematic diagram of one of the display and imaging integrated system embodiments provided by the present application.

[0020] Figure 2 is a schematic diagram of one of the display and imaging integrated system embodiments provided by the present application.

[0021] Figure 3 is a schematic diagram of one of the display and imaging integrated system embodiments provided by the present application.

[0022] Figure 4 is a schematic diagram of one of the display and imaging integrated system embodiments provided by the present application.

[0023] Reference signs:

[0024] 101, optical engine; 102, camera module; 103, optical waveguide; 104, in-coupling grating; 105, out-coupling grating; 106, zoom element. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application clearer, the following will combine the drawings in the present application to clearly and completely describe the technical solutions in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the embodiments of the utility model, it needs to be explained that, unless there is explicit provision and limitation, the terms "connected", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to specific circumstances.

[0028] In the embodiments of the utility model, unless there is explicit provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact of the first and second features, or indirect contact of the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0029] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0030] The following will be described in combination with Figures 1 to 4 The display and imaging integrated system and the intelligent wearable device provided by the utility model are described.

[0031] Referring to Figure 1 And Figure 2 As shown in the utility model embodiment provides display and imaging integrated system, including: light machine 101, camera module 102, light waveguide 103, coupling-in grating 104, coupling-out grating 105 and zoom part 106.

[0032] The coupling-in grating 104 and the coupling-out grating 105 are both arranged in the light waveguide 103, and the light rays of the light machine 101 are coupled into the light waveguide 103 through the coupling-in grating 104 and coupled out through the coupling-out grating 105.

[0033] The zooming part 106 is located on the side of the out-coupling grating 105 far away from the wearer, and is used for collimating ambient light; the out-coupling grating 105 is also used for coupling in the camera light into the light waveguide 103; the camera module 102 and the light machine 101 are located on opposite sides of the in-coupling grating 104, and the in-coupling grating 104 is also used for coupling out the camera light from the light waveguide 103, and the camera light coupled out through the in-coupling grating 104 is received by the camera module 102.

[0034] The display and imaging integrated system and the intelligent wearable device provided by the utility model, the light emitted by the light machine 101 enters the light waveguide 103 through the in-coupling grating 104, and is coupled out to the user by the out-coupling grating 105 after transmission; by arranging the zooming part 106 on the side of the out-coupling grating 105 far away from the wearer, ambient light can be collimated through the zooming part 106; the collimated ambient light is transmitted along the light waveguide 103 under the diffraction of the out-coupling grating 105, and is received by the camera module 102 under the diffraction of the in-coupling grating 104. That is, the light waveguide 103 can transmit the image of the light machine 101 to the user, and also can transmit the image in the external environment to the camera module 102, so that the display and imaging are integrated together, and the system is more compact.

[0035] Specifically, the light machine 101 can emit light containing image information. The light emitted by the light machine 101 can be coupled into the light waveguide 103 through the in-coupling grating 104, and is coupled out to the user by the out-coupling grating 105 under the transmission of the light waveguide 103.

[0036] The zooming part 106 can collimate ambient light, and the ambient light becomes parallel light under the collimation of the zooming part 106, and then is transmitted to the out-coupling grating 105 on the light waveguide 103; since the diffraction grating has transmission and reflection orders, the transmission order of the out-coupling grating 105 can be used for coupling out the light machine light emitted by the light machine 101 for displaying the image from the light waveguide 103, and the reflection order of the out-coupling grating 105 can be used for coupling out the image of the ambient light; the parallel light formed by the ambient light after collimation by the zooming part 106 is diffracted into the light waveguide 103 by the reflection order of the out-coupling grating 105 and is transmitted reversely, and finally reaches the in-coupling grating 104; similarly, the light is diffracted out of the light waveguide 103 under the action of the in-coupling grating 104, and finally enters the camera module 102.

[0037] The zooming part 106 can adopt a liquid crystal lens, a micro zooming lens, a micro optical collimator and a micro condenser lens, etc.

[0038] The liquid crystal lens can adjust the focal length according to the voltage, and can collimate the ambient light flexibly; the miniature zoom lens can adjust the focal length according to the requirement, so that the divergence of the light beam is changed, the light is more parallel, and the miniature zoom lens is suitable for use under different ambient light conditions; the miniature optical collimator can adjust the divergence angle of the light by a specific lens combination, so that the light is parallel, and the collimation effect of the ambient light is realized; and the miniature condenser lens can be used for focusing and collimating the scattered ambient light.

[0039] The zoom part 106 can be selected according to specific use requirements, such as space occupation and control difficulty, and the utility model does not make specific limitation.

[0040] Referring to Figure 2 As shown in the utility model, in some specific embodiments of the utility model, the zoom part 106 and the out-coupling grating 105 are located on the opposite sides of the optical waveguide 103, so that the parallel light formed after collimation of the zoom part 106 enters the optical waveguide 103 and is transmitted to the out-coupling grating 105 through the optical waveguide 103. The camera module 102 and the light machine 101 are located on the opposite sides of the in-coupling grating 104, the parallel light is reflected and diffracted by the out-coupling grating 105 to enter the optical waveguide 103 in reverse transmission, and finally reaches the in-coupling grating 104, and then enters the camera module 102 through the reflection and diffraction of the in-coupling grating 104.

[0041] In some embodiments, the zoom part 106 can be parallel to the optical waveguide 103, or can be arranged at a certain inclination angle relative to the optical waveguide 103, and the inclination angle is less than or equal to 10°, which can meet the requirement that the ambient light collimated can be transmitted to the out-coupling grating 105 through the optical waveguide 103. For example, due to the space layout of components in the intelligent wearable device, the zoom part 106 can be appropriately inclined relative to the optical waveguide 103 to meet the space layout requirement.

[0042] According to some embodiments of the utility model, the zoom part 106 has a power-on state and a power-off state, wherein the zoom part 106 collimates the ambient light in the power-on state, and the ambient light is transmitted through the zoom part 106 in the power-off state.

[0043] By adopting the zoom part 106 having the power-on state and the power-off state, the optical characteristics can be dynamically adjusted according to the ambient light condition in the power-on state, and the power-off state allows the light to be simply transmitted without being limited by the power supply, thereby improving the flexibility of the display and imaging integrated system. The zoom part 106 can collimate the ambient light into parallel light in the power-on state, and the power-off state ensures that the passive transmission is switched quickly, thereby enhancing the response capability of the system. In addition, when active adjustment is not required, the zoom part 106 can be switched to the power-off state, thereby prolonging the service life of the device.

[0044] Specifically, the zoom component 106 satisfying the above characteristics in the powered state and the powered-off state includes a liquid crystal lens, an electric zoom lens, an electric optical collimator, etc.

[0045] The liquid crystal lens can adjust the focal length in the powered state and simply transmit light in the powered-off state; the electric zoom lens can adjust the focal length through an electric control mechanism and allow light transmission when the power is off (powered-off state); and the electric optical collimator can adjust the beam divergence in the powered state and directly transmit ambient light in the powered-off state.

[0046] In specific implementation, the zoom component 106 with the above powered and powered-off properties can be selected according to actual needs, and the utility model does not make specific limitation thereon.

[0047] Referring to FIGS. 1 and 2, Figure 1 and Figure 2 According to the preferred embodiment of the utility model, the zoom component 106 is a liquid crystal lens.

[0048] By selecting the liquid crystal lens as the zoom lens capable of collimating ambient light, under the premise of the above characteristics in the powered and powered-off states, the liquid crystal lens can quickly adjust the light transmission characteristics, flexibly adjust the focal length, and has a thin design, which is suitable for compact optical systems. At the same time, the liquid crystal lens has low energy consumption in the static state, maintains high light transmittance, has good durability, and is easy to integrate with other optical elements.

[0049] According to some embodiments of the utility model, the display and imaging integrated system further comprises an electric control module, the electric control module is electrically connected with the zoom component 106; and the electric control module is used for controlling the zoom component 106 to switch between the powered state and the powered-off state, so that the zoom component 106 is in the powered state in the camera scene and is in the powered-off state in the virtual reality scene.

[0050] By setting the electric control module, the display and imaging integrated system can realize intelligent control and automatic state switching under different working conditions, and improve the intelligent level of the system.

[0051] Taking the liquid crystal lens as the zoom component 106, the electric control module can adjust the voltage applied to the liquid crystal lens according to the scene requirements to automatically adjust the focal length, and realize precise zooming. In the virtual reality scene, the liquid crystal lens can be powered off to reduce energy consumption and prolong the service life of the equipment. Moreover, the electric control module simplifies the operation, and the user does not need to manually adjust, thereby improving the convenience of the system and the user experience.

[0052] Referring to FIGS. 1 and 2, Figure 1 and Figure 2 According to some embodiments of the utility model, the in-coupling grating 104 is a transmission type in-coupling grating 104, and the light machine 101 and the in-coupling grating 104 are located on the same side of the optical waveguide 103.

[0053] By setting the coupling-in grating 104 as a transmissive coupling-in grating 104 and locating the light machine 101 and the coupling-in grating 104 on the same side of the optical waveguide 103, the optical path design can be simplified, the requirement for alignment between the light machine 101 and the coupling-in grating 104 is reduced, and the reliability of the system is improved. The overall thickness of the device is reduced, and the device is suitable for miniaturized applications. In addition, the transmissive coupling-in grating 104 can effectively couple incident light, improve the transmission efficiency of light, and reduce light loss.

[0054] Referring to Figure 2 In particular, as shown in the figure, when the light machine 101 and the (transmissive) coupling-in grating 104 are located on the same side of the optical waveguide 103, the light emitted by the light machine 101 can be directly coupled into the optical waveguide 103 through the transmissive coupling-in grating 104, and then coupled out by the coupling-out grating 105 after being transmitted in the optical waveguide 103 to the user.

[0055] Referring to Figure 3 According to some embodiments of the present application, the coupling-in grating 104 is a reflective coupling-in grating 104, and the light machine 101 and the coupling-in grating 104 are located on opposite sides of the optical waveguide 103.

[0056] By setting the coupling-in grating 104 as a reflective coupling-in grating 104 and locating the light machine 101 and the coupling-in grating 104 on opposite sides of the optical waveguide 103, firstly, the reflective coupling-in grating 104 can more effectively utilize reflected light, improve the coupling efficiency of light, reduce light loss, and improve the overall performance of the system. The separation of the light machine 101 and the coupling-in grating 104 also optimizes the optical path design, provides greater flexibility, and adapts to different application requirements. In addition, the reflective grating also allows effective operation within a wider range of incident angles, increasing the flexibility of the coupling angle. At the same time, separating the light machine 101 and the grating can reduce heat transfer, reduce the influence of heat, and improve the stability and reliability of the system.

[0057] In particular, referring to Figure 3 As shown in the figure, when the light machine 101 and the (reflective) coupling-in grating 104 are located on opposite sides of the optical waveguide 103, the light emitted by the light machine 101 enters the optical waveguide 103 and is transmitted to the coupling-in grating 104, and then coupled out by the coupling-out grating 105 after being transmitted in the optical waveguide 103 to the user.

[0058] As can be seen, the display and imaging integrated system provided by the present application can adaptively adjust the position of the light machine 101 by selecting the type of coupling-in grating 104, so that the system has strong flexibility to adapt to different application requirements.

[0059] Referring to Figure 1 and Figure 2As shown, according to some embodiments of the present application, the coupling-out grating 105 is a transmission type coupling-out grating 105, and the coupling-out grating 105 and the zoom component 106 are located on opposite sides of the optical waveguide 103.

[0060] By setting the coupling-out grating 105 as a transmission type coupling-out grating 105 and locating the coupling-out grating 105 and the zoom component 106 on opposite sides of the optical waveguide 103, the transmission type coupling-out grating 105 can effectively couple out light and improve the efficiency of output light. In addition, separating the grating and the zoom component 106 can reduce optical interference and improve the stability of the system.

[0061] Specifically, referring to Figure 2 As shown, when the (transmission type) coupling-out grating 105 and the zoom component 106 are located on opposite sides of the optical waveguide 103, ambient light transmitted through the zoom component 106 and the optical waveguide 103 to the coupling-out grating 105 can be transmitted and coupled out to the user, and the light rays emitted by the light engine 101 can reach the coupling-out grating 105 through transmission and be coupled out to the user.

[0062] Referring to Figure 4 As shown, according to some embodiments of the present application, the coupling-out grating 105 is a reflection type coupling-out grating 105, and the coupling-out grating 105 and the zoom component 106 are located on the same side of the optical waveguide 103.

[0063] By setting the coupling-out grating 105 as a reflection type coupling-out grating 105 and locating the coupling-out grating 105 and the zoom component 106 on the same side of the optical waveguide 103, the reflection type coupling-out grating 105 can effectively utilize reflected light and improve the coupling-out efficiency of light. In addition, the same side layout of the grating and the zoom component 106 can optimize the light transmission path, reduce light loss, and improve overall performance.

[0064] Specifically, when the (reflection type) coupling-out grating 105 and the zoom component are located on the same side of the optical waveguide 103, ambient light collimated by the zoom component 106 enters the coupling-out grating 105, enters the optical waveguide 103 under the transmission order of the coupling-out grating 105, is transmitted to the coupling-in grating 104 through the optical waveguide 103, and is diffracted into the camera module 102 through the coupling-in grating 104. The light rays emitted by the light engine 101 are coupled into the optical waveguide 103 through the coupling-in grating 104, transmitted to the coupling-out grating 105 through the optical waveguide 103, and coupled out to the user under the reflection order of the coupling-out grating 105.

[0065] As can be seen, the display and imaging integrated system provided by the present application can flexibly design the positions of the light engine 101 and the camera module 102 by selecting the type of the coupling-out grating 105, so that the system has strong flexibility to adapt to different application requirements.

[0066] Referring to Figures 1 to 3As shown, according to some embodiments of the present application, a gap is provided between the zoom element 106 and the optical waveguide 103, and the gap is greater than or equal to 0.05mm.

[0067] By providing a gap greater than or equal to 0.05mm between the zoom element 106 and the optical waveguide 103, direct contact between the zoom element 106 and the optical waveguide 103 can be prevented, and damage to the optical waveguide 103 can be prevented. In addition, the gap can reduce stress caused by thermal expansion of the optical waveguide 103 and the zoom element 106, and ensure stability of the system when the temperature changes.

[0068] The intelligent wearable device provided by the present application will be described below, and the intelligent wearable device described below can be correspondingly referred to the display and imaging integrated system described above.

[0069] In another aspect, the present application provides an intelligent wearable device, which comprises a housing and the display and imaging integrated system according to any one of the above embodiments, and the display and imaging integrated system is arranged in the housing.

[0070] The intelligent wearable device provided by the present application can integrate the display and imaging together, so that the system is more compact.

[0071] Specifically, the intelligent wearable device can be an augmented reality glasses (AR), a mixed reality glasses (XR) or the like.

[0072] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A display and imaging integrated system, characterized by, Comprising: an optical engine, a camera module, an optical waveguide, an in-coupling grating, an out-coupling grating and a zoom lens; the in-coupling grating and the out-coupling grating are both arranged on the optical waveguide, and the optical engine light is coupled into the optical waveguide through the in-coupling grating and is coupled out through the out-coupling grating; the zoom lens is located on the side of the out-coupling grating away from the wearer, and the zoom lens is used for collimating ambient light, and the out-coupling grating is also used for coupling camera light into the optical waveguide; the camera module and the optical engine are located on opposite sides of the in-coupling grating, and the in-coupling grating is also used for coupling the camera light out of the optical waveguide, and the camera light coupled out of the in-coupling grating is received by the camera module.

2. The display and imaging integrated system of claim 1, wherein, The zoom lens has a powered state and a de-energized state, wherein in the powered state the zoom lens collimates the ambient light, and in the de-energized state the ambient light transmits through the zoom lens.

3. The display and imaging integrated system of claim 2, wherein, The zoom lens is a liquid crystal lens.

4. The display and imaging integrated system of claim 2, wherein, Further comprising an electronic control module, the electronic control module is electrically connected with the zoom lens; The electronic control module is used to control the zoom lens to switch between the powered state and the de-energized state, so that the zoom lens is in the powered state in the camera scene and is in the de-energized state in the virtual reality scene.

5. The display and imaging integrated system according to any of claims 1 to 4, characterized in that, The in-coupling grating is a transmissive in-coupling grating, and the optical engine and the in-coupling grating are located on the same side of the optical waveguide.

6. The display and imaging integrated system according to any of claims 1 to 4, wherein, The in-coupling grating is a reflective in-coupling grating, and the optical engine and the in-coupling grating are located on opposite sides of the optical waveguide.

7. The display and imaging integrated system according to any of claims 1 to 4, wherein, The out-coupling grating is a transmissive out-coupling grating, and the out-coupling grating and the zoom lens are located on opposite sides of the optical waveguide.

8. The display and imaging integrated system according to any of claims 1 to 4, wherein, The out-coupling grating is a reflective out-coupling grating, and the out-coupling grating and the zoom lens are located on the same side of the optical waveguide.

9. The display and imaging integrated system according to any of claims 1 to 4, wherein, A gap is provided between the zoom lens and the optical waveguide, and the gap is greater than or equal to 0.05mm.

10. A smart wearable device, characterized by, Comprising, a housing and the display and imaging integrated system as claimed in any one of claims 1 to 9, the display and imaging integrated system is arranged in the housing.

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