VR optical module and VR lens assembling method

Abstract

The embodiment of the invention provides a VR optical module and an assembling method of a VR lens. Wherein the VR optical module comprises a lens barrel and a lens, the edge of the lens is provided with two positioning straight edges forming a set angle theta, and theta is greater than or equal to 90 degrees; the inner wall of the lens barrel is provided with a positioning structure matched with the two positioning straight edges of the lens, and the positioning structure is used for limiting radial displacement and axial rotation of the lens in the lens barrel; the side wall of the lens barrel is provided with a side pushing hole, and the central axis direction of the side pushing hole is parallel to the angular bisector direction of the two positioning straight edges and points to the optical center of the lens. And the side pushing hole is used for a side pushing tool to extend into and apply one-way pushing force to the lens along the central axis direction of the side pushing hole, so that the two positioning straight edges are in close contact with the positioning structure, and the positioning assembly of the lens in the lens barrel is realized.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of optical module assembly. More specifically, the embodiments of the present application relate to an assembly method of a VR optical module and a VR lens. Background Art

[0002] In the field of VR optics, the Pancake optical solution has gained widespread application due to its ability to significantly reduce the size of optical modules and improve image quality. In this solution, different lenses must be precisely assembled and arranged within a lens barrel to achieve specific optical performance and visual effects. However, to ensure a clear, distortion-free visual experience, stringent requirements are placed on the assembly decentration between lenses, typically requiring strict control of optical decentration within 0.04mm. Unfortunately, traditional lens assembly solutions have significant shortcomings in precision control, often failing to meet these stringent decentration tolerance requirements. During the assembly process, decentration tolerances often exceed the specified range. This not only directly impacts the optical performance of VR devices, leading to image blur and distortion, but also severely reduces the overall product quality and user experience. Therefore, developing a high-precision VR lens assembly structure is crucial for improving the optical performance and product quality of VR optical modules. Summary of the Invention

[0003] The purpose of this application is to provide a new technical solution for the assembly method of VR optical modules and VR lenses.

[0004] In a first aspect, the present application provides a VR optical module. The VR optical module includes a lens barrel and a lens, wherein the edge of the lens is provided with two positioning straight edges at a set angle θ, and θ ≥ 90°;

[0005] The inner wall of the lens barrel is provided with a positioning structure adapted to the two positioning straight edges of the lens, and the positioning structure is used to limit the radial displacement and axial rotation of the lens in the lens barrel;

[0006] The side wall of the lens barrel is provided with a side push hole, the central axis direction of the side push hole is parallel to the angle bisector direction of the two positioning straight edges and points to the optical center of the lens; the side push hole is used for a side push tool to extend into and apply a unidirectional thrust to the lens along its central axis direction, so that the two positioning straight edges are in close contact with the positioning structure, thereby realizing the positioning and assembly of the lens in the lens barrel.

[0007] Optionally, the two positioning straight edges of the lens edge are formed integrally when processing the lens.

[0008] Optionally, the lens is a trimmed lens, and its edge forms a straight trim portion, and the straight trim portion is located at a position on the lens that is perpendicular to the extension line of the angle bisector of the two positioning straight edges;

[0009] The side wall of the lens barrel has a straight wall portion adapted to the straight edge portion. The side push hole is opened on the straight wall portion, and its position corresponds to the central area of ​​the straight edge portion of the lens.

[0010] Optionally, each lens is provided with a corresponding side push hole.

[0011] Optionally, after the lens is positioned and assembled in the lens barrel, the side push hole is sealed by dispensing glue.

[0012] Optionally, after the lens is positioned and assembled in the lens barrel, a breathable film is covered on one side of the side push hole so that the side push hole has both breathable and sealing functions.

[0013] Optionally, the set angle θ is 90°≤θ≤120°.

[0014] Optionally, the positioning structure of the lens barrel is a straight edge or a groove that matches the two positioning straight edges of the lens.

[0015] Optionally, the side-pushing tool is a needle-shaped or rod-shaped structure, which is compatible with the side-pushing hole, and the side-pushing tool is used to apply a thrust from the side-pushing hole to the lens.

[0016] Optionally, the VR optical module further includes:

[0017] A display panel is provided at the optical input end of the lens barrel;

[0018] The polarizing optical film group is arranged in the light path between the lens and the display panel to form a folded light path structure.

[0019] Optionally, the eccentricity tolerance between the optical axis of the lens and the central axis of the lens barrel is ≤0.04 mm.

[0020] In a second aspect, the present application provides a method for assembling a VR lens, the method comprising:

[0021] Providing a lens, wherein the edge of the lens is provided with two positioning straight edges at a set angle θ, and θ ≥ 90°;

[0022] A lens barrel is provided, wherein the inner wall of the lens barrel is provided with a positioning structure adapted to the two positioning straight edges of the lens, and the side wall of the lens barrel is provided with a side push hole;

[0023] Place the lens into the lens barrel, and preliminarily align the two positioning straight edges of the lens with the positioning structure of the lens barrel;

[0024] A side-pushing tool is used to apply a unidirectional thrust to the lens through the side-pushing hole and along the central axis thereof, so that the two positioning straight edges of the lens are tightly fitted with the positioning structure of the lens barrel;

[0025] After the lens is positioned and assembled in the lens barrel, the side push hole is sealed by glue dispensing or film application.

[0026] The beneficial effects of this application are:

[0027] The VR optical module design provided in the embodiment of the present application has significant beneficial effects: first, by providing two positioning straight edges with a set angle θ (θ≥90°) on the edge of the lens and providing a corresponding positioning structure on the inner wall of the lens barrel, precise radial displacement and axial rotation restriction of the lens in the lens barrel are achieved, which significantly improves the accuracy of lens assembly and ensures that the optical eccentricity between the lenses can be strictly controlled within a specified range (e.g., within 0.04 mm), thereby effectively improving the optical performance and imaging quality of the VR optical module; second, the side push hole provided on the side wall of the lens barrel has a central axis parallel to the angle bisector direction of the two positioning straight edges and points to the optical center of the lens, providing a clear force direction for the side push tool, so that the side push tool can accurately apply a unidirectional thrust to the lens, thereby achieving fast and easy positioning and assembly of the lens, which not only simplifies the assembly process but also improves assembly efficiency; finally, since the positioning and assembly of the lens in the lens barrel is more precise and stable, problems such as eccentricity and displacement that may occur during the assembly process are reduced, thereby improving the overall stability and reliability of the VR optical module.

[0028] 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

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0030] Figure 1 A schematic diagram of the structure of the lens of the VR optical module provided in an embodiment of the present application;

[0031] Figure 2 An assembly diagram of the lens and lens barrel of the VR optical module provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of the structure of a VR optical module provided in an embodiment of the present application;

[0033] Figure 4 A partial schematic diagram of a side push hole of a VR optical module provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of a side push hole of a VR optical module provided in an embodiment of the present application;

[0035] Figure 6 Schematic diagram of a sealing method for the side push hole of the VR optical module provided in an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 1. Lens; 11. Positioning straight edge; 12. Straight line cutting edge;

[0038] 2. Lens barrel; 21. Positioning structure; 22. Side push hole; 23. Breathable membrane; 24. Straight wall portion;

[0039] 3. Display panel. DETAILED DESCRIPTION

[0040] 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 arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0041] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0042] 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.

[0043] 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.

[0044] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0045] The AR optical module, imaging display method, and AR display device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0046] According to one embodiment of the present application, a VR optical module is provided. Figures 1 to 3The VR optical module includes a lens barrel 2 and a lens 1, the edge of the lens 1 is provided with two positioning straight edges 11 at a set angle θ, and θ ≥ 90°; the inner wall of the lens barrel 2 is provided with a positioning structure 21 adapted to the two positioning straight edges 11 of the lens 1, and the positioning structure 21 is used to limit the radial displacement and axial rotation of the lens 1 in the lens barrel 2; the side wall of the lens barrel 2 is provided with a side push hole 22, the central axis direction of the side push hole 22 is parallel to the angle bisector direction of the two positioning straight edges 11 and points to the optical center of the lens 1; the side push hole 22 is used for a side push tool to extend into and apply a unidirectional thrust to the lens 1 along its central axis direction, so that the two positioning straight edges 11 are in close contact with the positioning structure 21, thereby realizing the positioning and assembly of the lens 1 in the lens barrel 2.

[0047] The core of the VR optical module provided in the present application lies in significantly improving the assembly precision of the lenses within the lens barrel through an optimized assembly structure design. This design not only effectively reduces errors during the assembly process but also further enhances the optical performance and operational stability of the entire VR optical module, helping to provide users with a clearer and more stable visual experience.

[0048] The following is an analysis of the main components and their functions in the VR optical module of the embodiment of the present application.

[0049] The VR optical module provided in the embodiment of the present application includes a lens barrel 2. The lens barrel 2 serves as the basic frame of the entire VR optical module and is responsible for accommodating and fixing the lens 1.

[0050] In the examples of this application, see Figure 1 and Figure 2 The inner wall of the lens barrel 2 is designed with a positioning structure 21 that matches the two positioning straight edges 11 on the lens 1. This positioning structure 21 ensures high precision of lens assembly by limiting the radial displacement and axial rotation of the lens 1 in the lens barrel 2.

[0051] The VR optical module provided in the embodiment of the present application includes at least one lens 1. The lens 1 is a key component in the VR optical module, responsible for achieving specific optical performance to meet the user's visual needs.

[0052] In the examples of this application, see Figure 1 The edge of the lens 1 is provided with two positioning straight edges 11 at a set angle θ (θ≥90°). These positioning straight edges 11 are closely matched with the positioning structure 21 in the lens barrel 2, achieving the precise positioning and assembly of the lens 1 in the lens barrel 2.

[0053] The angle of the two positioning straight edges 11 of the lens 1 is set to θ, and θ≥90°. This design effectively improves the assembly accuracy of the lens 1 and reduces errors during the assembly process.

[0054] In the embodiment of the present application, a side push hole 22 is provided on the side wall of the lens barrel 2 , which is an important auxiliary component in the lens assembly process.

[0055] Specifically, see Figure 1 and Figure 2 The central axis of the side-pushing hole 22 is parallel to the angular bisector of the two positioning straight edges 11 of the lens 1 and points toward the optical center of the lens 1. This design ensures that the side-pushing tool can accurately apply a unidirectional thrust to the lens 1, causing the positioning straight edges 11 to closely contact the positioning structure 21, thereby achieving stable positioning and assembly of the lens 1 within the lens barrel 2.

[0056] These major components mentioned above jointly realize a high-precision VR lens assembly structure through precise design and collaborative mechanism.

[0057] The core of the VR optical module provided by the embodiments of this application is to significantly improve the accuracy of lens assembly through structural optimization, thereby optimizing the optical performance and stability of the entire VR optical module. The specific technical effects are described as follows:

[0058] First, by designing two positioning straight edges 11 at a set angle θ (θ≥90°) on the edge of lens 1 and providing a precisely matched positioning structure 21 on the inner wall of lens barrel 2, strict restrictions are imposed on the radial displacement and axial rotation of lens 1 within lens barrel 2. This design effectively ensures the positional accuracy of the lens during assembly, significantly reduces assembly eccentricity, and thus significantly improves the optical performance and imaging quality of the optical module.

[0059] Secondly, the side-push hole 22 provided in the side wall of the lens barrel 2 has its central axis parallel to the angular bisector of the two positioning straight edges 11 and points toward the optical center of the lens 1, providing a clear force path for the side-push tool. The side-push tool applies a stable, unidirectional thrust to the lens 1 through the side-push hole 22, ensuring a tight fit between the lens 1's positioning straight edges and the positioning structure 21 of the lens barrel 2, enabling quick, easy, and precise positioning and assembly of the lens. This design not only simplifies the assembly process, reducing unnecessary assembly steps and time, but also significantly improves assembly efficiency and reduces production costs.

[0060] Because lens 1 is positioned more precisely and securely within lens barrel 2, problems such as decentration and displacement that may occur during assembly are effectively reduced, significantly improving the overall stability and reliability of the VR optical module. This high-precision assembly structure helps reduce the degradation of optical performance caused by assembly errors, further enhancing user experience and satisfaction.

[0061] In the VR optical module provided in an embodiment of the present application, the angle θ between the two positioning straight edges 11 on the edge of the lens 1 is set to ≥90°. This design has the following significant benefits: By setting θ ≥90°, a more stable and precise fit can be formed between the two positioning straight edges 11 of the lens 1 and the positioning structure 21 on the inner wall of the lens barrel 2. This fit effectively limits eccentricity and displacement during assembly, ensuring a high degree of assembly accuracy for the lens 1 within the lens barrel 2. High-precision assembly not only improves the optical performance of the optical module but also makes the imaging quality clearer and more stable. In addition, a larger angle θ means a wider contact surface between the positioning straight edges 11. This design significantly enhances the structural stability between the lens 1 and the lens barrel 2, making the lens less likely to loosen or shift during assembly and use. Thus, setting the angle θ between the two positioning straight edges 11 of the lens 1 to no less than 90° is a key measure to improve the assembly accuracy, structural stability, and optical performance of the VR optical module.

[0062] In some examples of this application, see Figure 1 The two positioning straight edges 11 on the edge of the lens 1 are formed as a whole when processing the lens 1.

[0063] In the examples provided in this application, see Figure 1 The two positioning straight edges 11 on the edge of the lens 1 are not formed by cutting away the lens edge material. Instead, two extended portions at a set angle are directly integrally molded during the processing of the lens 1. These extended portions constitute the positioning straight edges 11. This integral molding design provides a stronger connection strength between the positioning straight edges 11 and the lens 1 body, thereby improving the stability of the overall structure.

[0064] Because the positioning straight edge 11 is integrally formed during the processing of the lens 1, there is no need to separately process or install it in subsequent steps. This greatly simplifies the assembly process, reduces assembly steps and time, and thus improves assembly efficiency. Furthermore, the integrally formed design avoids the costs associated with additional processing or installation steps, further reducing production costs.

[0065] In some examples of this application, see Figures 1 to 3The lens 1 is a trimmed lens, and its edge forms a straight trim portion 12, which is located at a position on the lens 1 that is perpendicular to the extension line of the angle bisector of the two positioning straight edges 11; the side wall of the lens barrel 2 has a straight wall portion 24 that is adapted to the straight trim portion 12, and the side push hole 22 is opened on the straight wall portion 24, and its position corresponds to the central area of ​​the straight trim portion 12 of the lens 1.

[0066] In this application, the lens 1 is designed as a trimmed lens, which is characterized in that a straight trim portion 12 is formed by cutting off part of the material at a certain section of the lens edge. For details, see Figure 1 It should be noted that the straight cutting edge portion 12 is different from the two positioning straight edges 11 designed on the lens 1 in terms of formation and function.

[0067] In the example provided herein, the design of the straight cutting edge 12 being perpendicular to the extended lines of the angle bisectors of the two positioning straight edges 11 ensures that the side-pushing tool, when applying thrust, can precisely act on the designated position of the lens 1. This precise side-pushing positioning method effectively improves the assembly accuracy of the lens 1 within the lens barrel 2 and reduces eccentricity and displacement during the assembly process.

[0068] The straight wall portion 24 on the sidewall of the lens barrel 2 is adapted to the straight cut edge portion 12 of the lens 1, enhancing the structural compatibility between the two. This design allows the lens 1 to slide more smoothly into the lens barrel 2 during assembly and fit closely with the straight wall portion 24, thereby improving the stability and reliability of the assembly.

[0069] The side-push hole 22 is located on the straight wall portion 24, corresponding to the center of the linear trim portion 12. This provides a convenient side-push operation point during assembly. During assembly, the side-push hole 22 allows for convenient, unidirectional thrust to be applied to the lens 1, enabling quick and easy assembly. Furthermore, the improved assembly precision reduces the number of adjustment and correction steps required during assembly, further improving assembly efficiency.

[0070] In some examples of the present application, each lens 1 is provided with a corresponding side push hole 22 .

[0071] In the example provided in this application, each lens 1 is provided with a corresponding side push hole 22, that is, a one-to-one control mechanism.

[0072] Specifically, see Figure 4Each side-push hole 22 corresponds specifically to a lens 1 that requires adjustment. This one-to-one control mechanism ensures that each lens 1 can be precisely adjusted and positioned during assembly. This design allows for independent side-push operations for each lens 1 during assembly, achieving greater assembly precision and flexibility.

[0073] The assembly accuracy requirements of the lenses in the lens barrel vary. For those lenses 1 that require high-precision adjustment, each should be configured with a side push hole 22. This on-demand configuration method ensures the assembly quality of high-precision lenses while avoiding unnecessary complexity and cost increases.

[0074] The lens barrel may also contain some lenses that do not require high assembly accuracy, such as light-transmitting flat plates. For these lenses, since they have relatively low assembly accuracy requirements, there is no need to configure the side push hole 22. This design not only simplifies the assembly process, but also reduces production costs.

[0075] By providing a side push hole 22 for each lens 1 requiring high-precision adjustment, the assembly process is further optimized, allowing for more efficient and accurate lens assembly, reducing rework and scrap rates due to improper assembly. This design also improves assembly efficiency and shortens production cycles.

[0076] Precise side-push positioning and assembly accuracy ensure the optical performance and stability of the VR optical module. By configuring side-push holes 22 for each lens 1 requiring high-precision adjustment, product performance is significantly improved, allowing users to enjoy a clearer and more stable visual experience when using VR devices. This design also enhances product reliability.

[0077] In summary, the side-push hole configuration design in this application has brought substantial progress and advantages to the manufacturing and application of VR optical modules through many advantages such as one-to-one control mechanism, on-demand configuration of side-push holes, processing of non-high-precision lenses, and optimization of assembly process and efficiency.

[0078] In some examples of this application, see Figure 4 and Figure 5 After the lens 1 is positioned and assembled in the lens barrel 2, the side push hole 22 is sealed by dispensing glue.

[0079] By sealing the side push hole 22 by dispensing glue, external impurities such as dust and moisture can be effectively prevented from entering the interior of the lens barrel 2, thereby protecting the lens 1 and the VR optical module from pollution and damage, and improving the reliability and service life of the product.

[0080] Sealing the side push hole 22 by glue dispensing is a simple and quick processing method that does not require additional complex processes or materials, can simplify the production process and improve production efficiency.

[0081] In some examples of this application, see Figure 6 After the lens 1 is positioned and assembled in the lens barrel 2, a breathable membrane 23 is covered on one side of the side push hole 22 so that the side push hole 22 has both breathable and sealing functions.

[0082] By covering one side of the side push hole 22 with a breathable membrane 23, it is possible to maintain air circulation between the inside of the lens barrel 2 and the outside while effectively preventing impurities such as dust and moisture from entering. This design not only meets the need for ventilation inside the lens barrel 2, but also ensures sealing, thereby improving the environmental adaptability of the product.

[0083] The method of sealing the side push hole 22 with glue mainly emphasizes sealing and structural stability, and is suitable for scenarios with high sealing requirements and no need for ventilation. The method of covering with a breathable membrane 23 achieves a balance between ventilation and sealing, which not only meets the ventilation requirements inside the lens barrel 2 but also ensures sealing, and is suitable for scenarios where both ventilation and sealing are required. These two methods have their own advantages and disadvantages, and the specific choice should be determined based on the actual needs and design requirements of the product. In the high-precision VR lens assembly structure of this application, one of them can be selected or used in combination according to the actual assembly and use environment to achieve the best assembly effect and user experience.

[0084] In some examples of the present application, the set angle θ is 90°≤θ≤120°.

[0085] By further setting the included angle θ between the two positioning straight edges 11 of lens 1 to between 90° and 120°, the rotation and displacement of lens 1 within lens barrel 2 can be effectively limited, thereby improving assembly accuracy. This angle range ensures that lens 1 maintains stable positioning during assembly, reducing the degradation of optical performance caused by assembly eccentricity.

[0086] The angle θ between the two positioning straight edges 11 is between 90° and 120°, which can enhance the structural stability between the lens 1 and the lens barrel 2. This angle range makes it difficult for the lens 1 to rotate or shift when subjected to external forces, thereby maintaining the overall stability of the optical module.

[0087] From the perspective of processing, it is easy to set the angle θ between the positioning straight edges 11 within the range of 90° to 120°. This angle range is neither too narrow nor too wide, and is convenient for accurate manufacturing using existing processing equipment and processes.

[0088] Optionally, the set angle θ is 90°, 95°, 100°, 105°, 110°, 115°, or 120°.

[0089] In some examples of this application, see Figure 2 The positioning structure 21 of the lens barrel 2 is a straight edge or a groove that matches the two positioning straight edges 11 of the lens 1.

[0090] The positioning structure 21 of the lens barrel 2 is designed with straight edges or grooves that match the two positioning straight edges 11 of the lens 1, achieving precise matching and positioning of the lens 1 within the lens barrel 2. This design ensures that the lens 1 can be accurately aligned with the lens barrel 2 during assembly, reducing the risk of assembly eccentricity and displacement, thereby improving assembly accuracy.

[0091] The straight edge or groove design of the positioning structure 21 simplifies the assembly process. The assembler can more easily align the positioning straight edge 11 of the lens 1 with the positioning structure 21 of the lens barrel 2 and push the lens 1 into the lens barrel 2 by side pushing or other methods.

[0092] In some examples of the present application, the side-pushing tool is a needle-shaped or rod-shaped structure, which is adapted to the side-pushing hole 22 , and the side-pushing tool is used to apply a thrust from the side-pushing hole 22 to the lens 1 .

[0093] The needle-shaped or rod-shaped side-pushing tool is adapted to the side-pushing hole 22, so that during the assembly process, a thrust can be accurately applied to the lens 1. This design ensures accurate transmission of the thrust, reduces the risk of lens 1 shifting or damaging due to improper force application, and improves assembly accuracy and reliability.

[0094] In some examples of this application, see Figure 3 , the VR optical module also includes:

[0095] A display panel 3 is provided at the optical input end of the lens barrel 2; and

[0096] The polarizing optical film group is arranged in the light path between the lens 1 and the display panel 3 to form a folded light path structure.

[0097] Among them, the setting of the polarizing optical film group causes the light path to be folded between the lens 1 and the display panel 3. This folded light path structure can effectively shorten the overall length of the VR optical module, thereby reducing the volume and weight of the device and improving the user's wearing comfort.

[0098] The polarizing optical film assembly controls the polarization state of light, reducing interference from stray light and reflected light, thereby improving the utilization rate and imaging quality of light emitted by the display panel 3. This design helps improve the display quality of VR devices, allowing users to enjoy a clearer and more realistic visual experience.

[0099] In some examples of the present application, the eccentricity tolerance between the optical axis of the lens 1 and the central axis of the lens barrel 2 is ≤0.04 mm.

[0100] By controlling the eccentricity tolerance between the optical axis of the lens 1 and the central axis of the lens barrel 2 to ≤0.04 mm, high-precision assembly is achieved. This high-precision assembly ensures the accurate position of the lens 1 within the lens barrel 2 and reduces the potential for optical performance degradation due to assembly eccentricity, such as optical distortion, aberrations, or field of view shifts.

[0101] High-precision assembly helps improve the optical performance of VR optical modules. Because the optical axis of lens 1 is nearly aligned with the central axis of lens barrel 2, light maintains a more stable and accurate propagation path as it passes through lens 1, thereby improving image clarity and accuracy, providing users with a more realistic and comfortable visual experience.

[0102] In applications requiring extremely high optical performance, such as virtual reality and augmented reality, strict eccentricity tolerance control is key to meeting these high-specification application requirements. The technical solution of this application enables the production of VR optical modules that meet these high-specification application requirements, providing strong support for the development of related fields.

[0103] According to another embodiment of the present application, a method for assembling a VR lens is provided, the method comprising the following steps:

[0104] A lens 1 is provided, wherein the edge of the lens 1 is provided with two positioning straight edges 11 at a set angle θ, and θ is ≥ 90°;

[0105] A lens barrel 2 is provided, wherein the inner wall of the lens barrel 2 is provided with a positioning structure 21 adapted to the two positioning straight edges 11 of the lens 1, and the side wall of the lens barrel 2 is provided with a side push hole 22;

[0106] Place the lens 1 into the lens barrel 2, and preliminarily align the two positioning straight edges 11 of the lens 1 with the positioning structure 21 of the lens barrel 2;

[0107] A unidirectional thrust is applied to the lens 1 through the side-pushing hole 22 and along the central axis thereof by a side-pushing tool, so that the two positioning straight edges 11 of the lens 1 are tightly fitted with the positioning structure 21 of the lens barrel 2;

[0108] After the lens 1 is positioned and assembled in the lens barrel 2 , the side push hole 22 is sealed by glue dispensing or film application.

[0109] The assembly method provided in the embodiment of the present application has the following significant beneficial effects:

[0110] By providing two positioning straight edges 11 at a set angle θ (θ ≥ 90°) on the edge of lens 1 and providing a matching positioning structure 21 on the inner wall of lens barrel 2, precise assembly of lens 1 within lens barrel 2 is achieved. This high-precision assembly method ensures that the eccentricity tolerance between the optical axis of lens 1 and the central axis of lens barrel 2 (or the eccentricity tolerance between multiple lenses 1) can be controlled within an extremely small range (e.g., ≤ 0.04mm), thereby significantly improving the optical performance of the VR optical module.

[0111] In the assembly method, the lens 1 is initially placed into the lens barrel 2, and a side-pushing tool is used to apply a unidirectional thrust to the lens 1 through the side-pushing hole 22, so that the two positioning straight edges 11 of the lens 1 are tightly fitted with the positioning structure 21 of the lens barrel 2. This assembly method simplifies the assembly process, reduces the number of adjustment and correction steps during the assembly process, and improves assembly efficiency.

[0112] After the lens 1 is positioned and assembled in the lens barrel 2, the side push hole 22 is sealed by either gluing or attaching a breathable film 23. The breathable film seal effectively prevents dust and impurities from entering the lens barrel while maintaining air permeability, thereby ensuring long-term stable operation of the optical module.

[0113] The assembly method provided in the embodiment of the present application is suitable for assembling VR lenses of different specifications and types, and has strong adaptability. By adjusting the angle of the positioning straight edge 11 and the positioning structure 21 on the inner wall of the lens barrel 2, the assembly requirements between different lenses and the lens barrel can be easily achieved.

[0114] The specific implementation of the assembly method of the VR lens in the embodiment of the present application can refer to the various embodiments of the above-mentioned VR optical module, so it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be repeated here one by one.

[0115] 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.

[0116] 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 for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above examples 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 module, comprising a lens barrel (2) and a lens (1), characterized in that: The edge of the lens (1) is provided with two positioning straight edges (11) at a set angle θ, and θ is ≥ 90°; The inner wall of the lens barrel (2) is provided with a positioning structure (21) adapted to the two positioning straight edges (11) of the lens (1), and the positioning structure (21) is used to limit the radial displacement and axial rotation of the lens (1) in the lens barrel (2); The side wall of the lens barrel (2) is provided with a side push hole (22), the central axis direction of the side push hole (22) is parallel to the angle bisector direction of the two positioning straight edges (11) and points to the optical center of the lens (1); the side push hole (22) is used for allowing a side push tool to extend into and apply a unidirectional thrust to the lens (1) along the central axis direction thereof, so that the two positioning straight edges (11) are in close contact with the positioning structure (21), thereby realizing the positioning assembly of the lens (1) in the lens barrel (2).

2. The VR optical module according to claim 1, wherein: The two positioning straight edges (11) on the edge of the lens (1) are formed in one piece when processing the lens (1).

3. The VR optical module according to claim 1, wherein: The lens (1) is a trimmed lens, and its edge forms a straight trim portion (12), and the straight trim portion (12) is located on the lens (1) at a position perpendicular to the extended line of the angle bisector of the two positioning straight edges (11); The side wall of the lens barrel (2) has a straight wall portion (24) adapted to the straight edge portion (12); the side push hole (22) is opened on the straight wall portion (24), and its position corresponds to the central area of ​​the straight edge portion (12) of the lens (1).

4. The VR optical module according to claim 3, wherein: Each lens (1) is correspondingly provided with a side push hole (22).

5. The VR optical module according to claim 1, wherein: After the lens (1) is positioned and assembled in the lens barrel (2), the side push hole (22) is sealed by dispensing glue.

6. The VR optical module according to claim 1, wherein: After the lens (1) is positioned and assembled in the lens barrel (2), a breathable film (23) is covered on one side of the side push hole (22) so that the side push hole (22) has both breathable and sealing functions.

7. The VR optical module according to claim 1, wherein: The set angle θ is 90°≤θ≤120°.

8. The VR optical module according to claim 1, wherein: The positioning structure (21) of the lens barrel (2) is a straight edge or a groove that matches the two positioning straight edges (11) of the lens (1).

9. The VR optical module according to claim 1, wherein: The side pushing tool is a needle-shaped or rod-shaped structure, which is compatible with the side pushing hole (22). The side pushing tool is used to apply a pushing force from the side pushing hole (22) to the lens (1).

10. The VR optical module according to claim 1, wherein: The VR optical module also includes: A display panel (3) is arranged at the optical path input end of the lens barrel (2); A polarizing optical film group is arranged in the light path between the lens (1) and the display panel (3) and is used to form a folded light path structure.

11. The VR optical module according to claim 1, wherein: The eccentricity tolerance between the optical axis of the lens (1) and the central axis of the lens barrel (2) is ≤0.04 mm.

12. A method for assembling a VR lens, characterized in that: The following steps are involved: A lens (1) is provided, wherein the edge of the lens (1) is provided with two positioning straight edges (11) at a set angle θ, and θ is ≥ 90°; A lens barrel (2) is provided, wherein the inner wall of the lens barrel (2) is provided with a positioning structure (21) adapted to the two positioning straight edges (11) of the lens (1), and the side wall of the lens barrel (2) is provided with a side push hole (22); The lens (1) is placed in the lens barrel (2), and the two positioning straight edges (11) of the lens (1) are preliminarily aligned with the positioning structure (21) of the lens barrel (2); A unidirectional thrust is applied to the lens (1) via the side-pushing hole (22) and along the central axis thereof by a side-pushing tool, so that the two positioning straight edges (11) of the lens (1) are tightly fitted with the positioning structure (21) of the lens barrel (2); After the lens (1) is positioned and assembled in the lens barrel (2), the side push hole (22) is sealed by glue dispensing or film application.

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