VR optical display system and intelligent head-mounted device

Abstract

The embodiment of the invention provides a VR optical display system and intelligent head-mounted equipment. The VR optical display system comprises a first optical display module and a second optical display module, the first optical display module comprises a first imaging assembly and a first screen, the center L2 of the first screen is located on the right side of the optical axis of the first imaging assembly, and chief light emitted by the center L2 of the first screen enters the left eye in an oblique incidence mode; the second optical display module comprises a second imaging assembly and a second screen, the center R2 of the second screen is located on the left side of the optical axis of the second imaging assembly, and chief light emitted by the center R2 of the second screen enters the right eye in an oblique incidence mode; wherein the distance between the center L2 of the first screen and the optical axis of the first imaging assembly is H1, the distance between the center R2 of the second screen and the optical axis of the second imaging assembly is H2, and H1 is equal to H2.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of optical display technology. More specifically, the embodiments of the present application relate to a VR optical display system and an intelligent head-mounted device. Background Art

[0002] In the development of virtual reality (VR) technology, user experience has always been a core issue that developers have paid attention to. When a user wears a binocular VR module, if the module does not perform binocular fusion processing, the images seen by the left and right eyes cannot overlap, which will cause the wearer to feel dizzy. This is because when both eyes receive inconsistent image information, it is difficult for the brain to process this information correctly, resulting in discomfort. There are some solutions in the prior art, but they are often complex in structure, high in cost and limited in effect. Summary of the invention

[0003] The purpose of this application is to provide a new technical solution for VR optical display system and intelligent head-mounted device.

[0004] In a first aspect, the present application provides a VR optical display system, the VR optical display system comprising:

[0005] A first optical display module includes a first imaging component and a first screen, wherein a center L2 of the first screen is located on the right side of an optical axis of the first imaging component, and a main light emitted from the center L2 of the first screen is obliquely incident into a left eye; and

[0006] A second optical display module includes a second imaging component and a second screen, wherein a center R2 of the second screen is located on the left side of the optical axis of the second imaging component, and a main light emitted from the center R2 of the second screen is obliquely incident into the right eye;

[0007] The distance between the center L2 of the first screen and the optical axis of the first imaging component is H1, the distance between the center R2 of the second screen and the optical axis of the second imaging component is H2, and H1=H2.

[0008] Optionally, 0.12 mm ≤ H1 and H2 ≤ 1.13 mm, so that the virtual image of the first screen and the virtual image of the second screen can overlap on the perpendicular bisector of the left eye and the right eye.

[0009] Optionally, the distance between the virtual image and any one of the left eye and the right eye is a preset virtual image distance M, and 1m≤M≤4m.

[0010] Optionally, the focal lengths of the first optical display module and the second optical display module are the same.

[0011] Optionally, the VR optical display system satisfies: H1=H2=F*D / (2M); wherein F is the focal length of the first optical display module or the second optical display module, D is the binocular pupil distance, and M is a preset virtual image distance.

[0012] Optionally, the first imaging component and the second imaging component are Fresnel mirror modules.

[0013] Optionally, the first imaging component and the second imaging component are folded optical path modules.

[0014] Optionally, the first imaging component and the second imaging component each include at least one lens.

[0015] Optionally, the first imaging component includes at least a first lens, and the second imaging component includes at least a second lens;

[0016] Any one of the first lens and the first screen can be moved along the respective optical axes to adjust the virtual image distance; and,

[0017] Any one of the second lens and the second screen can be moved along the respective optical axes to adjust the virtual image distance.

[0018] Optionally, the first imaging component and the second imaging component both include liquid lenses.

[0019] In a second aspect, the present application provides a smart head-mounted device, the smart head-mounted device comprising:

[0020] casing; and

[0021] The VR optical display system as described in the first aspect;

[0022] The first optical display module corresponds to the left eye of the user, and the second optical display module corresponds to the right eye of the user.

[0023] The beneficial effects of this application are:

[0024] The VR optical display system provided in the embodiment of the present application achieves a binocular fusion effect by accurately designing the screen positions corresponding to the left and right eyes and their relative relationship with the corresponding imaging components. This design of the present application significantly improves the comfort of users when wearing VR equipment, and effectively solves the dizziness problem caused by the lack of binocular fusion. In addition, compared with traditional VR modules, the VR optical display system of the present application has the advantages of simple structure, low cost and easy implementation, which not only reduces the production cost, but also improves the market competitiveness of the product. In the field of virtual reality, the VR optical display system of the present application has broad application prospects and can bring users a more immersive and comfortable virtual reality experience.

[0025] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0027] Figure 1 This is the structure and optical path diagram of the VR binocular module without binocular fusion processing;

[0028] Figure 2 The structure and optical path diagram of the VR optical display system provided in the embodiment of the present application;

[0029] Figure 3 This is the screen-lens optical axis distance and module focal length curve involved in this application.

[0030] Description of reference numerals:

[0031] 100, first optical display module; 101, first imaging component; 102, first screen;

[0032] 200, second optical display module; 201, second imaging component; 202, second screen;

[0033] 301, left lens; 302, left screen; 401, right lens; 402, right screen;

[0034] 01. Left eye; 02. Right eye. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0037] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0038] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0039] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] The VR optical display system and smart head mounted device provided in the embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0041] According to one embodiment of the present application, a VR optical display system is provided. Figure 2 , including a first optical display module 100 and a second optical display module 200; wherein, the first optical display module 100 includes a first imaging component 101 and a first screen 102, the center L2 of the first screen 102 is located on the right side of the optical axis of the first imaging component 101, and the main light emitted from the center L2 of the first screen 102 is obliquely incident into the left eye 01; the second optical display module 200, including a second imaging component 201 and a second screen 202, the center R2 of the second screen 202 is located on the left side of the optical axis of the second imaging component 201, and the main light emitted from the center R2 of the second screen 202 is obliquely incident into the right eye 02; wherein, the distance between the center L2 of the first screen 102 and the optical axis of the first imaging component 101 is H1, the distance between the center R2 of the second screen 202 and the optical axis of the second imaging component 201 is H2, and H1=H2.

[0042] The VR optical display system provided in the embodiment of the present application achieves binocular fusion effect through a unique design. Figure 2 L3 / R3 shown in.

[0043] In the current VR binocular module structure, if binocular fusion processing is not performed, there will be significant dizziness problems. Figure 1 , the traditional VR binocular module structure includes a left lens 301 and a left screen 302 corresponding to the left eye 01, and also includes a right lens 401 and a right screen 402 corresponding to the right eye 02; wherein, the light emitted by the left screen 302 enters the left eye 01 after being refracted by the left lens 301, and the light emitted by the right screen 402 enters the right eye 02 after being refracted by the right lens 401. However, in this VR binocular module structure without binocular fusion processing, the center L0 of the left screen 302 and the center R0 of the right screen 402 usually display the same image, and the main light emitted by them is vertically incident on the left eye 01 and the right eye 02 respectively.

[0044] The problem with the current VR binocular module structure is that, please continue to refer to Figure 1, the virtual image of the center L0 of the left screen 302 and the virtual image of the center R0 of the right screen 402 are located in front of the left eye 01 and the right eye 02 respectively, and the images of the two virtual images are the same. Therefore, the human eye will perceive that the two virtual images are located at infinity, that is, the virtual image distance perceived by the human eye is infinite. However, this is inconsistent with the actual designed virtual image distance (usually a finite distance). This inconsistency can cause the wearer to feel dizzy when using the VR binocular module, seriously affecting the user's comfort and experience.

[0045] In the embodiments of the present application, see Figure 2 , the center L2 of the first screen 102 is located on the right side of the optical axis of the first imaging component 101 (i.e., the bridge of the nose side), so the main light emitted by the first screen 102 is obliquely incident to the left eye 01; at the same time, the center R2 of the second screen 202 is located on the left side of the optical axis of the second imaging component 201 (i.e., the bridge of the nose side), and the main light emitted by the second screen 202 is also obliquely incident to the right eye 02. The optical solution provided in the embodiment of the present application achieves the binocular fusion effect by changing the position of the screen center and the incident mode of the main light, and effectively solves the dizziness problem caused by the lack of binocular fusion.

[0046] It should be noted that see Figure 2 When the VR optical display system provided in the embodiment of the present application is applied to a smart head mounted device such as a VR device, the center L2 of the first screen 102 and the center R2 of the second screen 202 indicated in the embodiment of the present application are both located near the bridge of the nose. The images displayed by the center L2 of the first screen 102 and the center R2 of the second screen 202 are the same.

[0047] The embodiment of the present application achieves binocular fusion effect through unique design, improves the user's comfort, and effectively solves the dizziness problem caused by binocular non-fusion. Figure 1 The VR binocular module structure shown does not perform binocular fusion processing. The present application has made significant improvements in the screen center position, light incidence method, and the distance between the screen and the optical axis of the imaging component, thereby achieving a binocular fusion effect.

[0048] Specifically, the VR optical display system provided in the embodiment of the present application includes a first optical display module 100 and a second optical display module 200, which correspond to the left eye 01 and the right eye 02 of the wearer respectively. Figure 2In the first optical display module 100, the center L2 of the first screen 102 is cleverly set on the right side of the optical axis of the first imaging component 101 (i.e., the bridge of the nose side), and the light emitted by the first screen 102 can accurately enter the left eye 01 after being refracted by the first imaging component 101, and the main light of the first screen 102 is obliquely incident on the left eye 01. In the second optical display module 200, the center R2 of the second screen 202 is set on the left side of the optical axis of the second imaging component 201 (i.e., the bridge of the nose side), and the light emitted by it enters the right eye 02 after being refracted, and the main light of the second screen 202 is obliquely incident on the right eye 02.

[0049] The key to the design of this application is that the distance H1 between the center L2 of the first screen 102 and the optical axis of the first imaging component 101, and the distance H2 between the center R2 of the second screen 202 and the optical axis of the second imaging component 201 are set equal (i.e., H1=H2). When these two distances are equal and take specific values, the virtual image of the center L2 of the first screen 102 corresponding to the left eye 01 and the virtual image of the center R2 of the second screen 202 corresponding to the right eye 02 can be overlapped, see Figure 2 L3 / R3 shown in FIG, and the distance between the overlapped virtual image and the eye is a preset virtual image distance M. In this way, the left eye 01 and the right eye 02 of the wearer will feel the light emitted by the same virtual image, thereby achieving a binocular fusion effect.

[0050] The VR optical display system of the embodiment of the present application includes two major components: a first optical display module 100 and a second optical display module 200. The two modules correspond to the left eye and the right eye of the user, respectively, to provide a stereoscopic visual experience. The first optical display module 100 and the second optical display module 200 are described below.

[0051] The first optical display module 100 includes a first imaging component 101 and a first screen 102; wherein the center L2 of the first screen 102 is not placed directly in front of the optical axis of the first imaging component 101, but is cleverly located on the right side of the optical axis (i.e., the bridge of the nose). This design allows the main light emitted from the center L2 of the first screen 102 to obliquely enter the left eye 01 of the wearer.

[0052] The second optical display module 200 includes a second imaging component 201 and a second screen 202. Similar to the first optical display module 100, the center R2 of the second screen 202 is not placed directly in front of the optical axis of the second imaging component 201, but is located on the left side of its optical axis (i.e., the side of the bridge of the nose). Such a design allows the main light emitted from the center R2 of the second screen 202 to obliquely enter the right eye 02 of the wearer.

[0053] The first imaging component 101 includes, for example, at least one lens or other optical element for refracting the light emitted by the first screen 102 so that it can enter the left eye 01. The first screen 102 is responsible for displaying images, and the setting of its center position L2 is one of the keys to achieve binocular fusion.

[0054] The second imaging component 201 and the second screen 202 are used to refract light into the wearer's right eye 02 and display images. The position setting of the center R2 of the second screen 202 is also crucial to the binocular fusion effect.

[0055] The two distances H1 and H2 represent the distances between the center L2 of the first screen 102 and the center R2 of the second screen 202 and the optical axes of their respective imaging components. By controlling these two distances and ensuring that they are equal, binocular fusion effect can be achieved. This design not only improves the user's comfort, but also effectively solves the dizziness problem caused by binocular non-fusion.

[0056] The VR optical display system provided in the embodiment of the present application has the following technical effects:

[0057] (1) Binocular fusion effect is achieved:

[0058] By precisely designing the screen positions corresponding to the left and right eyes and their relative relationship with the imaging component (i.e. the center of the screen is located on the bridge of the nose of the optical axis of the imaging component, and the distances between the left and right screens and the optical axis are equal), the left and right eyes can receive the virtual images that overlap after being refracted by the imaging component. In this way, the left and right eyes of the user will feel the light emitted by the same virtual image, thus achieving binocular fusion effect.

[0059] (2) Improved user comfort:

[0060] The realization of binocular fusion effect can reduce the dizziness caused by binocular non-fusion when users wear VR optical display system. This greatly improves the user's comfort and allows users to enjoy the virtual reality experience longer and more comfortably.

[0061] Since the VR optical display system provided in the embodiment of the present application has the advantages of simple structure, low cost and easy implementation, it has broad application prospects in the field of virtual reality.

[0062] In some examples of the present application, 0.12 mm ≤ H1 and H2 ≤ 1.13 mm, so that the virtual image of the first screen 102 and the virtual image of the second screen 202 can overlap on the perpendicular bisector of the left eye 01 and the right eye 02, see Figure 2 .

[0063] In this example of the present application, the distance H1 between the center L2 of the first screen 102 and the optical axis of the first imaging component 101, and the distance H2 between the center R2 of the second screen 202 and the optical axis of the second imaging component 201 are indicated, that is, 0.12mm≤H1 and H2≤1.13mm. When the values ​​of H1 and H2 meet this condition, combined with the screen center position design in the previously described embodiment (that is, the screen center is located on the bridge of the nose side of the imaging component optical axis), the virtual image of the first screen 102 and the virtual image of the second screen 202 can be overlapped on the perpendicular bisector of the user's left eye 01 and right eye 02.

[0064] It should be noted that the "perpendicular median" here refers to the vertical line connecting the center points of the left and right eyes, that is, the straight line where the center points of the vision of both eyes are located when the user looks straight ahead.

[0065] By controlling the value range of H1 and H2, the virtual image of the first screen 102 and the virtual image of the second screen 202 can overlap on the perpendicular bisector of the two eyes, thereby further optimizing the binocular fusion effect. This design ensures that the user's left eye 01 and right eye 02 can receive highly consistent visual information, reducing visual conflict and discomfort caused by the difference in binocular images.

[0066] The optimization of binocular fusion effect directly improves the realism and immersion of virtual reality visual experience. When users wear the VR optical display system of the present application, they can feel a more natural and realistic stereoscopic visual effect, thereby enhancing the interactivity and immersion of virtual reality.

[0067] Since the virtual images of the first screen 102 and the second screen 202 can overlap on the perpendicular line of the two eyes, visual fatigue and dizziness caused by the non-fusion of binocular images are reduced. The user can wear the system for a longer time without feeling uncomfortable, thereby improving the durability and comfort of the virtual reality experience.

[0068] It is worth noting that although the value range of H1 and H2 is limited, this design is sufficient to accommodate the differences in pupil distance of most users. In applications, the relative position of the screen and the imaging component can be adjusted to match the pupil distance of different users, thereby ensuring the realization of binocular fusion effect.

[0069] In some examples of this application, see Figure 2 , the distance between the virtual image and any one of the left eye 01 and the right eye 02 is a preset virtual image distance M, and 1m≤M≤4m.

[0070] In this example of the present application, it is pointed out that the distance between the virtual image L3 / R3 overlapped by the two screens and either the left eye 01 or the right eye 02 is a preset virtual image distance M, and the value range of the preset virtual image distance M is limited to between 1m and 4m. Figure 2 As shown in the structural diagram, it can be understood that by adjusting the distance H1 between the center L2 of the first screen 102 and the optical axis of the first imaging component 101, and the distance H2 between the center R2 of the second screen 202 and the optical axis of the second imaging component 201, the virtual image L3 of the first screen 102 and the virtual image R3 of the second screen 202 can be overlapped, and the distance between the overlapped virtual image L3 / R3 and the eye is controlled within a preset virtual image distance M. The virtual image distance M here is a key parameter, which determines the relative distance between the virtual image and the eye perceived by the user.

[0071] By setting the virtual image distance M within the range of 1m to 4m, a more natural viewing distance can be simulated, so that users can feel a more realistic and three-dimensional virtual environment when wearing the VR optical display system. This design helps to enhance the immersion of virtual reality and improve the user experience.

[0072] Reasonable virtual image distance settings can help reduce visual fatigue and dizziness caused by improper image distance. When the virtual image distance M is set too close or too far, it may cause users to feel uncomfortable. Setting M within the range of 1m to 4m can better balance visual comfort and the realism of virtual reality.

[0073] Different users may have different preferences for viewing distances of virtual images. By setting the virtual image distance M within a relatively wide range (1m to 4m), the visual needs of different users can be better adapted, thereby improving the applicability and user satisfaction of the VR module.

[0074] As mentioned above, binocular fusion is one of the key technologies for VR modules to achieve stereoscopic vision. By superimposing the virtual images of the screens corresponding to the left eye 01 and the right eye 02 on the perpendicular bisector of the eyes, and controlling the virtual image distance M within an appropriate range, the binocular fusion effect can be further optimized, reducing the visual conflict and discomfort caused by the inconsistency of binocular images.

[0075] In summary, by setting a reasonable virtual image distance M (within the range of 1m to 4m) in this example of the present application, not only the immersion and realism of virtual reality are enhanced, but also visual fatigue and dizziness are reduced, the visual needs of different users are met, and the binocular fusion effect is optimized. This design is of great significance for improving the overall performance of the VR optical display system and the user's visual experience.

[0076] In some examples of the present application, the focal lengths of the first optical display module 100 and the second optical display module 200 are the same.

[0077] In this example of the present application, it is pointed out that the focal lengths of the first optical display module 100 and the second optical display module 200 are the same. Focal length is an important parameter of the optical system, which determines the degree of convergence or divergence of light after passing through the optical system. In the VR optical display system of the present application, the focal length of each optical display module directly affects the size and clarity of the virtual image observed by the user. When the focal lengths of the first optical display module 100 corresponding to the left eye 01 and the second optical display module 200 corresponding to the right eye 02 are the same, it means that the virtual images received by the left eye 01 and the right eye 02 are consistent in magnification and clarity, which is crucial to achieving binocular fusion.

[0078] The consistency of focal length ensures a high degree of visual consistency between the virtual images received by the left eye 01 and the right eye 02, thereby optimizing the binocular fusion effect. This helps reduce the visual conflict and discomfort caused by the difference in binocular images, and improves the user's wearing experience.

[0079] Optical display modules with the same focal length can ensure that the virtual images observed by the left eye 01 and the right eye 02 are consistent in clarity. This helps to improve the resolution and detail of the overall image, allowing users to see the details in the virtual environment more clearly.

[0080] Binocular fusion is one of the key technologies to achieve stereoscopic vision. When the virtual images received by the left eye 01 and the right eye 02 are consistent in focal length, a real stereoscopic visual effect can be simulated more effectively. This helps to enhance the user's immersion and sense of reality in the virtual environment.

[0081] In some examples of the present application, the VR optical display system satisfies: H1=H2=F*D / (2M); wherein F is the focal length of the first optical display module 100 or the second optical display module 200, D is the binocular pupil distance, and M is a preset virtual image distance.

[0082] In this example of the present application, a relationship is given: H1 = H2 = F*D / (2M), see Figure 2 , this equation describes the relationship between several important parameters in VR optical display systems.

[0083] Specifically, H1 and H2 represent the distance between the center of the two screens and the optical axis of their corresponding imaging components. Adjustment of this distance is the key to achieving binocular fusion, because it directly affects the position and overlap of the virtual images received by the left eye 01 and the right eye 02. Focal length F is an important parameter of the optical display module, which determines the degree of convergence of light after passing through the imaging component, thereby affecting the size and clarity of the virtual image. The binocular pupil distance D is the distance between the left and right pupils of the user (that is, the distance between the centers of the two pupils when the eyes are looking straight ahead). It is an important factor to consider when designing a VR optical display system to ensure that the left eye 01 and the right eye 02 can receive correct image information. The preset virtual image distance M is the distance between the virtual image and the eyes perceived by the user, which determines the presentation position and depth sense of the virtual image.

[0084] By adjusting the values ​​of H1 and H2 so that they satisfy the above equation, it is possible to ensure that the virtual images received by the left and right eyes are optimally matched in position and overlap. This helps reduce the visual conflict and discomfort caused by the inconsistency of binocular images, thereby achieving accurate binocular fusion.

[0085] The choice of focal length F has a direct impact on the clarity and size of the virtual image. Through the equation relationship in this example of the present application, the appropriate focal length F can be selected according to the preset virtual image distance M and binocular pupil distance D to ensure that the virtual image can be presented to the user in the best state.

[0086] The binocular pupil distance D varies from person to person. Through the equation, the values ​​of H1 and H2 can be adjusted according to the user's actual pupil distance to ensure that the VR optical display system can adapt to the pupil distance requirements of different users and provide a personalized wearing experience.

[0087] The preset virtual image distance M determines the distance between the virtual image and the user's eyes. By adjusting the value of M, virtual environments at different distances can be simulated, thereby enhancing the user's immersion and sense of reality in virtual reality. The equation relationship ensures that this adjustment process can be carried out accurately and stably.

[0088] The equation relationship H1=H2=F*D / (2M) given in this example of the present application has significant technical effects in achieving accurate binocular fusion, optimizing the presentation of virtual images, adapting to the pupil distance requirements of different users, enhancing the immersion of virtual reality, and simplifying the module design and manufacturing process. This design is of great significance to improving the overall performance and user experience of VR modules.

[0089] See also Figure 3 When the binocular pupil distance D is 60mm and the virtual image distance M is set to 2m, the relationship curve between H1 or H2 and the focal length F of the optical display module is as follows: Figure 3As shown, a linear relationship can be shown.

[0090] In some examples of the present application, the first imaging component 101 and the second imaging component 201 are Fresnel mirror modules.

[0091] The Fresnel mirror module includes at least one Fresnel lens.

[0092] According to this example of the present application, applying the Fresnel mirror module to the binocular fusion VR solution can bring the following technical effects:

[0093] (1) Improve binocular fusion effect: The high light transmittance and focus adjustment function of Fresnel lenses can ensure that the images seen by the left and right eyes are highly consistent in position and focus, thereby improving binocular fusion effect and reducing dizziness.

[0094] (2) Improve image clarity: The thin and light design and high light transmittance of Fresnel lenses help reduce light loss and distortion inside the lens, thereby improving image clarity and contrast.

[0095] (3) Enhanced wearing comfort: The lightweight design of Fresnel lenses can reduce the weight of VR optical display devices and reduce the pressure on the user's head and neck, thereby enhancing wearing comfort.

[0096] In addition, since the Fresnel lens has a focal length adjustment function, it can support a zoom adjustment mechanism, so that the VR optical display system of the present application can adjust the virtual image distance (VID) of the image in real time according to the needs of different scenes, further reducing the dizziness problem while achieving clear imaging.

[0097] In some examples of the present application, the first imaging component 101 and the second imaging component 201 are folded optical path modules.

[0098] Applying the folded optical path module to the VR optical display system of the present application can produce the following significant technical effects:

[0099] (1) Improving binocular fusion effect: The folded optical path module ensures that the images received by the left and right eyes are highly consistent in position and focal length, thereby significantly improving the binocular fusion effect and reducing the dizziness that may occur to users during use.

[0100] (2) Enhanced image quality: The folded optical path module has been optimized to reduce the distortion of light during transmission, making the image clearer and improving the user's visual experience.

[0101] (3) Optimize module structure: The folded optical path design makes the module structure more compact and lightweight, which is not only convenient for users to wear, but also reduces production costs and complexity.

[0102] It can be seen that the use of a folded optical path module as the first imaging component 101 and the second imaging component 201 of the VR optical display system of the present application not only optimizes the module structure and improves the image quality, but also significantly enhances the binocular fusion effect, bringing users a more excellent VR visual experience.

[0103] In some examples of this application, see Figure 2 , the first imaging component 101 and the second imaging component 201 each include at least one lens.

[0104] In virtual reality (VR) technology, the imaging component on the light path of the screen is one of the core parts of the VR optical display system. It is responsible for projecting image light into the user's eyes to form visual perception. In order to achieve high-quality binocular fusion effects, the imaging component needs to be able to accurately control the refraction and focusing of light. The lens is a key component in the imaging component. It transfers light from one medium to another through refraction and changes the propagation direction of light in the process.

[0105] In this example of the present application, the first imaging component 101 and the second imaging component 201 each include at least one lens, and the focusing effect of the lens ensures that the light from the screen can be accurately projected onto the user's retina to form a clear image. The lens can improve the clarity of the image, which helps to improve the overall performance of the VR optical display system, enabling it to present higher quality images.

[0106] In the present application, the first imaging component 101 and the second imaging component 201 both include at least one lens design option, which not only improves the clarity of the image, but also optimizes the binocular fusion effect, bringing users a more excellent VR visual experience.

[0107] In some examples of this application, see Figure 2 The first imaging component 101 includes at least a first lens, and the second imaging component 201 includes at least a second lens; any one of the first lens and the first screen 102 can be moved along their respective optical axes to achieve virtual image distance adjustment; and any one of the second lens and the second screen 202 can be moved along their respective optical axes to achieve virtual image distance adjustment.

[0108] Moving lens solution: When the lens moves along its optical axis, its position relative to the screen changes, thus changing the focal length and position of the image. By adjusting the position of the lens, a clearer image can be formed.

[0109] Moving the screen: Moving the screen can also achieve focus adjustment. By adjusting the position of the screen, a clear image can be obtained.

[0110] The VR optical display system of the present application includes two imaging components, each of which includes a lens and a screen. This design allows the focal length of each imaging component to be adjusted independently, thereby achieving more complex imaging effects, such as zoom, stereoscopic imaging, etc.

[0111] The design in this application allows the first lens and the first screen, as well as any one of the second lens and the second screen to move along their respective optical axes, to achieve flexible adjustment of the virtual image distance. This adjustment capability is directly converted into a focusing function, allowing the system to adjust the clarity and position of the imaging according to actual needs. This is very valuable for applications that require high-precision imaging, zoom or stereo imaging.

[0112] In some examples of the present application, both the first imaging component 101 and the second imaging component 201 include liquid lenses.

[0113] Liquid lenses change the focal length by changing the curvature of the liquid. This process can be completed in a very short time, which is much faster than the traditional mechanical focusing method. There are no moving parts inside the liquid lens, and the design without mechanical parts also makes the entire VR optical display system more compact and lightweight. In addition, liquid lenses can achieve continuous adjustment of focal length, not just a few fixed focal points. This allows imaging components to adapt to different scenarios more flexibly.

[0114] According to another embodiment of the present application, a smart head-mounted device is provided, which includes a shell and the VR optical display system as described above; wherein the first optical display module 100 corresponds to the user's left eye 01, and the second optical display module 200 corresponds to the user's right eye 02.

[0115] The smart head mounted device provided in the embodiment of the present application is, for example, a VR device. The form of the VR device is, for example, VR smart glasses or a VR smart helmet.

[0116] The specific implementation of the intelligent head mounted device of the embodiment of the present application can refer to the various embodiments of the above-mentioned VR optical display system, and therefore at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0117] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0118] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A VR optical display system, characterized in that: include: A first optical display module (100) comprises a first imaging component (101) and a first screen (102), wherein a center L2 of the first screen (102) is located on the right side of an optical axis of the first imaging component (101), and a main light ray emitted from the center L2 of the first screen (102) is obliquely incident on a left eye (01); and A second optical display module (200) comprises a second imaging component (201) and a second screen (202), wherein a center R2 of the second screen (202) is located on the left side of an optical axis of the second imaging component (201), and a main light ray emitted from the center R2 of the second screen (202) is obliquely incident on a right eye (02); The distance between the center L2 of the first screen (102) and the optical axis of the first imaging component (101) is H1, the distance between the center R2 of the second screen (202) and the optical axis of the second imaging component (201) is H2, and H1=H2.

2. The VR optical display system according to claim 1, characterized in that: 0.12 mm ≤ H1 and H2 ≤ 1.13 mm, so that the virtual image of the first screen (102) and the virtual image of the second screen (202) can overlap on the perpendicular bisector of the left eye (01) and the right eye (02).

3. The VR optical display system according to claim 2, characterized in that: The distance between the virtual image and any one of the left eye (01) and the right eye (02) is a preset virtual image distance M, and 1m≤M≤4m.

4. The VR optical display system according to claim 1, characterized in that: The focal lengths of the first optical display module (100) and the second optical display module (200) are the same.

5. The VR optical display system according to claim 4, characterized in that: The VR optical display system satisfies: H1=H2=F*D / (2M); wherein F is the focal length of the first optical display module (100) or the second optical display module (200), D is the binocular pupil distance, and M is a preset virtual image distance.

6. The VR optical display system according to any one of claims 1 to 5, characterized in that: The first imaging component (101) and the second imaging component (201) are Fresnel mirror modules.

7. The VR optical display system according to any one of claims 1 to 5, characterized in that: The first imaging component (101) and the second imaging component (201) are folded light path modules.

8. The VR optical display system according to any one of claims 1 to 5, characterized in that: The first imaging component (101) and the second imaging component (201) each include at least one lens.

9. The VR optical display system according to claim 8, characterized in that: The first imaging component (101) comprises at least a first lens, and the second imaging component (201) comprises at least a second lens; Any one of the first lens and the first screen (102) can be moved along the respective optical axes to achieve virtual image distance adjustment; and, Either the second lens or the second screen (202) can be moved along the respective optical axes to adjust the virtual image distance.

10. The VR optical display system according to claim 8, characterized in that: The first imaging component (101) and the second imaging component (201) both include liquid lenses.

11. A smart head mounted device, characterized in that: include: shell; and The VR optical display system according to any one of claims 1 to 10; The first optical display module (100) corresponds to the user's left eye (01), and the second optical display module (200) corresponds to the user's right eye (02).

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