VR optical display system and smart head-mounted device

Abstract

Embodiments of the present application provide a VR optical display system and a smart head-mounted device; wherein 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 the chief ray emitted by the center L2 of the first screen is incident into the left eye; 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 the chief ray emitted by the center R2 of the second screen is incident into the right eye; 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=H2.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of optical display, and more particularly, to a VR optical display system and a smart head-mounted device. BACKGROUND

[0002] In the development process of virtual reality (VR) technology, user experience has always been the core issue of developers. 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 coincide, which will cause the wearer to feel dizzy. This is because when the two eyes receive inconsistent image information, the brain has difficulty correctly processing this information, 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

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

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

[0005] a first optical display module, comprising 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 the chief ray emitted by the center L2 of the first screen is obliquely incident into the left eye; and

[0006] a second optical display module, comprising 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 the chief ray emitted by the center R2 of the second screen is obliquely incident into the right eye.

[0007] 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 = H2.

[0008] Optionally, 0.12mm≤H1 and H2≤1.13mm, so that the virtual image of the first screen and the virtual image of the second screen can coincide 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 a focal length of the first optical display module or the second optical display module, D is a binocular pupil distance, and M is a preset virtual image distance.

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

[0013] Optionally, the first imaging assembly and the second imaging assembly are folded light path modules.

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

[0015] Optionally, the first imaging assembly includes at least a first lens, and the second imaging assembly includes at least a second lens.

[0016] Either of the first lens and the first screen is movable along a respective optical axis to achieve virtual image distance adjustment; and,

[0017] Either of the second lens and the second screen is movable along a respective optical axis to achieve virtual image distance adjustment.

[0018] Optionally, the first imaging assembly and the second imaging assembly each include a liquid lens.

[0019] In a second aspect, the present application provides an intelligent head-mounted device, which includes:

[0020] a housing; and

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

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

[0023] The present application has the following beneficial effects:

[0024] The VR optical display system provided by the embodiments of the present application realizes binocular fusion effect by accurately designing the relative positions of the screens corresponding to the left and right eyes and the relative relationship between the screens and the corresponding imaging assemblies. This design of the present application significantly improves the comfort of the user when wearing the VR device, effectively solves the dizziness problem caused by binocular non-fusion. In addition, compared with the traditional VR module, 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 a wide application prospect and can bring users a more immersive and comfortable virtual reality experience.

[0025] Other features of the present specification, and the advantages thereof over existing systems and methods will become more apparent from the following detailed description, when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

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

[0027] Figure 1 Structure and optical path diagram of a VR binocular module without binocular fusion processing;

[0028] Figure 2 Structure and optical path diagram of a VR optical display system provided by the present application;

[0029] Figure 3 Distance between screen and lens optical axis and module focal length curve involved in the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS

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

[0032] 200, second optical display module; 201, second imaging assembly; 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 the relative arrangement of the components and steps set forth in these embodiments, numerical expressions, and numerical values are not limiting to the scope of the present application unless specifically stated otherwise.

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

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

[0038] In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0039] It should be noted that like reference numerals and characters refer to like elements throughout the several views, and the first discussion of an element does not imply each subsequent discussion of such element.

[0040] The VR optical display system and the intelligent head-mounted device provided by the embodiment of the present application are described in detail below with reference to the accompanying drawings.

[0041] According to an embodiment of the present application, a VR optical display system is provided, referring to Figure 2 , comprising a first optical display module 100 and a second optical display module 200; wherein the first optical display module 100 comprises a first imaging assembly 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 assembly 101, and the chief ray emitted by the center L2 of the first screen 102 is obliquely incident into the left eye 01; the second optical display module 200 comprises a second imaging assembly 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 assembly 201, and the chief ray emitted by 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 assembly 101 is H1, the distance between the center R2 of the second screen 202 and the optical axis of the second imaging assembly 201 is H2, and H1 = H2.

[0042] The VR optical display system provided by the embodiment of the present application realizes binocular fusion effect through unique design, referring to Figure 2 L3 / R3 shown in the figure.

[0043] In the current VR binocular module structure, if binocular fusion processing is not performed, there will be a significant dizziness problem. Specifically, referring to Figure 1 , the traditional VR binocular module structure comprises a left lens 301 and a left screen 302 corresponding to the left eye 01, and further comprises 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 refraction by the left lens 301, and the light emitted by the right screen 402 enters the right eye 02 after refraction 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 chief rays emitted by them are respectively perpendicular to the left eye 01 and the right eye 02.

[0044] For the current VR binocular module structure, the problem 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 infinity. However, this is inconsistent with the actual designed virtual image distance (usually a finite distance). This inconsistency will cause the wearer to feel dizzy when using the VR binocular module, which seriously affects the comfort and experience effect of the user.

[0045] In the embodiments of the present application, referring to Figure 2 , the center L2 of the first screen 102 is located on the right side (i.e. the nose bridge side) of the optical axis of the first imaging assembly 101, so that the chief ray emitted by the first screen 102 is obliquely incident into the left eye 01; at the same time, the center R2 of the second screen 202 is located on the left side (i.e. the nose bridge side) of the optical axis of the second imaging assembly 201, and the chief ray emitted by the second screen 202 is also obliquely incident into the right eye 02. The optical scheme provided in the embodiments of the present application realizes the binocular fusion effect by changing the position of the screen center and the incident mode of the chief ray, and effectively solves the dizziness problem caused by binocular non-fusion.

[0046] It should be noted that, referring to Figure 2 , when the VR optical display system provided in the embodiments 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 are located close to the nose bridge side. 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 embodiments of the present application realize the binocular fusion effect through unique design, improve the user's use comfort, and effectively solve the dizziness problem caused by binocular non-fusion. Compared with Figure 1 the VR binocular module structure without binocular fusion processing, the present application has made significant improvements in the screen center position, the light incident mode, and the distance between the screen and the imaging assembly optical axis, thereby realizing the binocular fusion effect.

[0048] Specifically, the VR optical display system provided in the embodiments of the present application includes a first optical display module 100 and a second optical display module 200, corresponding to the left eye 01 and the right eye 02 of the wearer respectively, referring to Figure 2In the first optical display module 100, the center L2 of the first screen 102 is ingeniously arranged on the right side (i.e., the nose bridge side) of the optical axis of the first imaging assembly 101. After refraction by the first imaging assembly 101, the light emitted by the first screen 102 can accurately enter the left eye 01, and the chief ray 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 arranged on the left side (i.e., the nose bridge side) of the optical axis of the second imaging assembly 201. After refraction, the light emitted by the second screen 202 enters the right eye 02, and the chief ray of the second screen 202 is obliquely incident on the right eye 02.

[0049] The key of the present application is that the distance H1 between the center L2 of the first screen 102 and the optical axis of the first imaging assembly 101, and the distance H2 between the center R2 of the second screen 202 and the optical axis of the second imaging assembly 201 are arranged to be equal (i.e., H1 = H2). When these two distances are equal and take a certain value, 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 coincide, please see L3 / R3 shown in FIG. 6, and the distance between the coinciding 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 realizing the binocular fusion effect. Figure 2

[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. These 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, respectively.

[0051] The first optical display module 100 includes a first imaging assembly 101 and a first screen 102. The center L2 of the first screen 102 is not arranged directly in front of the optical axis of the first imaging assembly 101, but is ingeniously located on the right side (i.e., the nose bridge side) of the optical axis of the first imaging assembly 101. This design allows the chief ray emitted by the center L2 of the first screen 102 to be obliquely incident into the left eye 01 of the wearer.

[0052] The second optical display module 200 includes a second imaging assembly 201 and a second screen 202. Similar to the first optical display module 100, the center R2 of the second screen 202 is not arranged directly in front of the optical axis of the second imaging assembly 201, but is located on the left side (i.e., the nose bridge side) of the optical axis of the second imaging assembly 201. This design allows the chief ray emitted by the center R2 of the second screen 202 to be obliquely incident into the right eye 02 of the wearer. ​

[0053] The first imaging assembly 101, for example, includes at least one lens or other optical element for refracting the light rays emitted by the first screen 102 to enable the light rays to enter the left eye 01. The first screen 102 is responsible for displaying images, and the position of the center L2 thereof is one of the keys to achieving binocular fusion.

[0054] The second imaging assembly 201 and the second screen 202 are responsible for refracting light rays into the right eye 02 of the wearer and displaying images, respectively. The position of the center R2 of the second screen 202 is also crucial to the binocular fusion effect.

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

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

[0057] (1) Achieving binocular fusion effect:

[0058] By accurately designing the positions of the screens corresponding to the left and right eyes and the relative relationship between the screens and the imaging assemblies (i.e., the centers of the screens are located on the nose bridge side of the optical axes of the imaging assemblies, and the distances between the screens and the optical axes are equal), the left and right eyes can receive virtual images that are refracted by the imaging assemblies and coincide with each other. In this way, the left and right eyes of the user will feel that the light rays are emitted from the same virtual image, thereby achieving the binocular fusion effect.

[0059] (2) Improving the comfort of the user:

[0060] The implementation of the binocular fusion effect enables the user to reduce the problem of dizziness caused by binocular non-fusion when wearing the VR optical display system. This greatly improves the comfort of the user and enables the user to enjoy virtual reality experience for a longer time and more comfortably.

[0061] The VR optical display system provided by the embodiments of the present application has the advantages of simple structure, low cost, and easy implementation, and thus has a wide application prospect in the field of virtual reality.

[0062] In some examples of the present application, 0.12mm≤H1 and H2≤1.13mm, so that the virtual images of the first screen 102 and the second screen 202 can coincide on the perpendicular bisector of the left eye 01 and the right eye 02, as shown in 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 assembly 101, and the distance H2 between the center R2 of the second screen 202 and the optical axis of the second imaging assembly 201 are indicated, i.e. 0.12mm≤H1 and H2≤1.13mm. When the values of H1 and H2 satisfy this condition, in combination with the screen center position design in the previously described embodiments (i.e. the screen center is located on the nose bridge side of the imaging assembly optical axis), the virtual image of the first screen 102 and the virtual image of the second screen 202 can be superimposed on the median line of the user's left eye 01 and right eye 02.

[0064] It should be noted that the "median line" 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 visual lines of the two 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 be superimposed on the median line 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 differences in binocular images.

[0066] The optimization of the binocular fusion effect directly improves the realism and immersion of the virtual reality visual experience. When the user wears the VR optical display system of the present application, a more natural and realistic stereoscopic visual effect can be experienced, 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 be superimposed on the median line of the two eyes, this reduces the visual fatigue and dizziness caused by the non-fusion of binocular images. The user can wear the system for a longer time without feeling uncomfortable, thereby improving the persistence 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 already sufficient to adapt to the interpupillary distance differences of most users. Because in the application, the relative positions of the screens and imaging assemblies can be adjusted to match the interpupillary distances of different users, thereby ensuring the realization of binocular fusion effect.

[0069] In some examples of the present application, referring to 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 of the two screens and any one of the left eye 01 and the right eye 02 is a preset virtual image distance M, and the value range of this preset virtual image distance M is limited between 1m and 4m. In combination with Figure 2 As shown in the structural schematic 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 assembly 101, and the distance H2 between the center R2 of the second screen 202 and the optical axis of the second imaging assembly 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 the 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 that the user feels.

[0071] By setting the virtual image distance M in the range of 1m to 4m, a more natural viewing distance can be simulated, so that the user can feel a more realistic and stereoscopic 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 setting helps to reduce visual fatigue and dizziness caused by improper image distance. When the set virtual image distance M is too close or too far, the user may feel uncomfortable. By setting M in the range of 1m to 4m, the visual comfort and the realism of virtual reality can be well balanced.

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

[0074] As mentioned earlier, binocular fusion is one of the key technologies for VR modules to achieve stereoscopic vision. By overlapping the virtual images of the screens corresponding to the left eye 01 and the right eye 02 on the median line of the eyes, and controlling the virtual image distance M within a suitable range, the binocular fusion effect can be further optimized, and the visual conflict and discomfort caused by the inconsistency of the images of the two eyes can be reduced.

[0075] In summary, by setting a reasonable virtual image distance M (in 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 the visual fatigue and dizziness problems 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 an optical system, which determines the degree of convergence or divergence of light rays 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 maintain consistency in magnification and clarity, which is crucial for achieving binocular fusion.

[0078] The consistency of focal length ensures the high consistency of virtual images received by the left eye 01 and the right eye 02 in vision, thereby optimizing the binocular fusion effect. This helps to reduce visual conflict and discomfort caused by differences between the two eyes, 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 maintain consistency in clarity. This helps to improve the overall image resolution and detail performance, allowing users to see details in the virtual environment more clearly.

[0080] Binocular fusion is one of the key technologies for achieving stereoscopic vision. When the virtual images received by the left eye 01 and the right eye 02 maintain consistency in focal length, it can more effectively simulate the real stereoscopic vision effect. This helps to enhance the user's sense of immersion and realism in the virtual environment.

[0081] In some examples of the present application, the VR optical display system satisfies: H1=H2=F*D / (2M); where 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 the VR optical display system.

[0083] Specifically, H1 and H2 represent the distance between the center of the two screens and the optical axis of the corresponding imaging component, respectively. The adjustment of this distance is crucial for binocular fusion, as it directly affects the position and coincidence of the virtual images received by the left eye 01 and the right eye 02. The focal length F is an important parameter of the optical display module, which determines the degree of convergence of light rays 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 pupils of the left and right eyes of the user (i.e., the distance between the centers of the two pupils when looking straight ahead), which 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 the correct image information. The preset virtual image distance M is the distance between the virtual image and the eye experienced by the user, which determines the presentation position and depth perception of the virtual image.

[0084] By adjusting the values of H1 and H2 to satisfy the above equation relationship, it can be ensured that the virtual images received by the left and right eyes are optimally matched in position and coincidence. This helps to reduce visual conflicts and discomfort caused by inconsistent binocular images, thereby achieving precise binocular fusion.

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

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

[0087] The preset virtual image distance M determines the distance between the virtual image and the eye experienced by the user. By adjusting the value of M, virtual environments of different distances can be simulated, thereby enhancing the immersion and realism of the user in virtual reality. The equation relationship ensures that this adjustment process can be accurately and stably performed.

[0088] The equation relationship H1 = H2 = F * D / (2M) given in this example has significant technical effects in achieving precise 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 design and manufacturing process of the module. This design is of great significance for improving the overall performance and user experience of the VR module.

[0089] Referring to Figure 3 When the binocular pupil distance D is 60mm and the preset virtual image distance M is 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 presented.

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

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

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

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

[0094] (2) Improve image clarity: the thin design and high light transmittance of the Fresnel lens are conducive to reducing light loss and distortion inside the lens, improving image clarity and contrast.

[0095] (3) Enhance wearing comfort: the thin design of the Fresnel lens can reduce the weight of the VR optical display device, reducing the pressure on the user's head and neck, thereby enhancing the wearing comfort.

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

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

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

[0099] (1) Improve binocular fusion effect: the folded light 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 sense of dizziness that users may experience during use.

[0100] (2) Enhance image quality: the folded light path module is optimally designed to reduce distortion of light during transmission, making the image clearer and improving the user's visual experience.

[0101] (3) Optimize module structure: the folded light path design makes the module structure more compact and lightweight, not only facilitating user wear, but also reducing production costs and complexity.

[0102] Therefore, using the 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 better VR visual experience.

[0103] In some examples of the present application, referring to 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 in the screen light path is one of the core parts of the VR optical display system, which is responsible for projecting image light into the user's eyes to form visual perception. In order to achieve high-quality binocular fusion effect, the imaging component needs to accurately control the refraction and focusing of light. The lens is a key element in the imaging component, which transmits light from one medium to another by 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 action 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 design choice of the first imaging component 101 and the second imaging component 201 each including at least one lens not only improves the clarity of the image, but also optimizes the binocular fusion effect, bringing users a better VR visual experience.

[0107] In some examples of the present application, referring to 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 move along the respective optical axis to achieve virtual image distance adjustment; and any one of the second lens and the second screen 202 can move along the respective optical axis 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, thereby 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 focusing. By adjusting the position of the screen, a clear image can be obtained.

[0110] The VR optical display system of the present application comprises two imaging assemblies, each of which comprises a lens and a screen. This design allows independent adjustment of the focal length of each imaging assembly, thereby achieving more complex imaging effects such as zoom, stereoscopic imaging, etc.

[0111] The design in the present application achieves flexible adjustment of the virtual image distance by allowing any one of the first lens and the first screen and the second lens and the second screen to move along the respective optical axis. This adjustment capability directly translates into a focusing function, enabling the system to adjust the clarity and position of the image according to actual needs. This is very valuable for applications that require high-precision imaging, zoom or stereoscopic imaging.

[0112] In some examples of the present application, the first imaging assembly 101 and the second imaging assembly 201 each comprise a liquid lens.

[0113] The liquid lens changes the focal length by changing the curvature of the liquid, which can be done in a very short time, much faster than traditional mechanical focusing. The liquid lens has no moving parts inside, and the design without mechanical parts also makes the entire VR optical display system more compact and lightweight. In addition, the liquid lens can achieve continuous adjustment of the focal length, rather than just a few fixed focal length points. This enables the imaging assembly to be more flexible in adapting to different scenarios.

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

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

[0116] The specific implementation of the smart head-mounted device of the embodiments of the present application can refer to the above-mentioned embodiments of the 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 repeated here.

[0117] The above embodiments mainly describe the differences between the various embodiments. The different optimization features between the various embodiments can be combined to form a more optimal embodiment as long as they are not contradictory. Considering the brevity of the writing, this will not be repeated here.

[0118] While certain embodiments of the application have been described herein in detail, those skilled in the art will appreciate that modifications can be made without departing from the scope and spirit of the application. The scope of the 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 to the right of an optical axis of the first imaging component (101), and a chief light ray emitted from the center L2 of the first screen (102) is obliquely incident upon 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 to the left of an optical axis of the second imaging component (201), and a chief light ray emitted from the center R2 of the second screen (202) is obliquely incident upon the right eye (O2); 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; The first optical display module (100) and the second optical display module (200) have the same focal length; 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 the preset virtual image distance; The virtual image of the first screen (102) and the virtual image of the second screen (202) are able to overlap on the perpendicular bisector of the left eye (01) and the right eye (02).

2. The VR optical display system according to claim 1, wherein: 0.12mm≤H1 and H2≤1.13mm.

3. The VR optical display system according to claim 2, wherein: 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 any one of claims 1 to 3, characterized in that: The first imaging component (101) and the second imaging component (201) are Fresnel mirror modules.

5. The VR optical display system according to any one of claims 1 to 3, characterized in that: The first imaging component (101) and the second imaging component (201) are folded light path modules.

6. The VR optical display system according to any one of claims 1 to 3, characterized in that: The first imaging component (101) and the second imaging component (201) each include at least one lens.

7. The VR optical display system according to claim 6, characterized in that: 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 the 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 the respective optical axes to achieve virtual image distance adjustment.

8. The VR optical display system according to claim 6, wherein: The first imaging component (101) and the second imaging component (201) both comprise liquid lenses.

9. A smart head-mounted device, characterized in that: include: shell; and The VR optical display system according to any one of claims 1 to 8; 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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