Optical module and intelligent head-mounted device

Abstract

The embodiment of the invention provides an optical module and intelligent head-mounted equipment. The optical module comprises a bearing assembly, a screen, a lens, a gland, a lens support and an adjusting piece. The bearing assembly comprises a lens cone and a screen support arranged at one end of the lens cone. The screen is arranged in the screen bracket; the gland is arranged at the other end of the lens barrel; a sealing assembly is arranged between the gland and the lens; the lens support is movably arranged in the lens barrel and comprises a first support and a second support, a bearing part is arranged on the first support and used for bearing the lens, a transmission part is arranged on the second support, and a buffer part is connected between the bearing part and the transmission part; the adjusting piece is arranged on the lens cone, a transmission thread is arranged on the adjusting piece, and one end of the adjusting piece abuts against the transmission part; when the adjusting piece is adjusted, the adjusting piece can move axially along the transmission thread and push the transmission part through one end, so that the lens support drives the lens to move along the optical axis in the lens barrel.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of optical devices. More specifically, the embodiments of the present application relate to an optical module and an intelligent head-mounted device. Background Art

[0002] With the rapid development of VR technology, the functions of VR optical modules are becoming increasingly rich, especially the focus adjustment function has become the key to improving user experience. However, the existing adjustment structure generally has problems such as cumbersome structure and difficult sealing. In addition, since glue is generally used for bonding and fixing during the assembly process, the shrinkage during the glue curing process will cause the accuracy of the optical module to change, causing module errors. Summary of the invention

[0003] The purpose of this application is to provide a new technical solution for optical modules and smart head-mounted devices.

[0004] In a first aspect, the present application provides an optical module. The optical module comprises:

[0005] A bearing assembly, comprising a lens barrel and a screen support arranged at one end of the lens barrel;

[0006] A screen, arranged on the screen bracket;

[0007] A lens, disposed in the lens barrel and arranged along the optical axis with the screen;

[0008] A pressure cover is arranged at one end of the lens barrel away from the screen bracket, and a sealing component is arranged between the pressure cover and the lens;

[0009] A lens bracket is movably disposed in the lens barrel, and comprises a first bracket and a second bracket, wherein the first bracket is provided with a supporting portion for supporting the lens, and the second bracket is provided with a transmission portion, and a buffer is connected between the supporting portion and the transmission portion;

[0010] An adjusting member is arranged on the lens barrel, a transmission thread is arranged on the adjusting member, and one end of the adjusting member abuts against the transmission part;

[0011] When the adjusting member is adjusted, the adjusting member can move axially along the transmission thread and push the transmission part through one end, so that the lens holder moves along the optical axis in the lens barrel with the lens.

[0012] Optionally, an elastic element is provided between the pressure cover and the lens.

[0013] Optionally, the sealing assembly includes at least two sealing rings.

[0014] Optionally, the sealing assembly includes a first sealing ring and a second sealing ring, and the elastic element is located between the first sealing ring and the second sealing ring.

[0015] Optionally, the elastic element is an elastic gasket or a spring.

[0016] Optionally, the transmission part has an inclined surface;

[0017] The adjusting member comprises a rod portion, one end of the rod portion is provided with an adjusting knob, the other end of the rod portion is provided with a pushing portion, and the pushing portion and the inclined surface abut against each other.

[0018] Optionally, the pushing portion is a spherical body;

[0019] When the adjusting knob is adjusted along a first direction, the rod portion moves the spherical body axially along the transmission thread, and the spherical body pushes the inclined surface, so that the lens holder moves the lens along the optical axis in a direction away from the screen.

[0020] Optionally, when the adjusting knob is adjusted along a second direction, under the elastic action of the elastic element, the lens holder moves with the lens along the optical axis toward the screen; wherein the second direction is opposite to the first direction.

[0021] Optionally, the lens barrel is a metal piece, a threaded hole is provided on a side wall of the lens barrel, the adjusting piece is inserted into the threaded hole, and the transmission thread forms a threaded fit with the threaded hole.

[0022] Optionally, the lens barrel is a plastic part, an insert nut is provided on the side wall of the lens barrel, the adjusting part is inserted into the insert nut, and the transmission thread and the insert nut form a threaded fit.

[0023] Optionally, the first bracket and the second bracket are annular and both match the shape of the side wall of the lens barrel;

[0024] A guide structure is circumferentially arranged on the outer walls of the first bracket and the second bracket, a guide groove matching the guide structure is arranged on the inner wall of the lens barrel, and the guide structure and the guide groove are set to be slidably connected, so that under the drive of the adjusting member, the lens bracket can move along the optical axis direction.

[0025] Optionally, the supporting part and the transmission part are respectively provided as one or more, and the supporting part and the transmission part are provided in a one-to-one correspondence.

[0026] Optionally, the adjusting member is provided as one or more;

[0027] When the adjusting member is provided in plurality, the adjusting members are centrally symmetrically distributed on the lens barrel along the optical axis.

[0028] In a second aspect, the present application provides a smart head-mounted device, the smart head-mounted device comprising:

[0029] An optical module as described in the first aspect.

[0030] The beneficial effects of this application are:

[0031] The embodiments of the present application provide an optical module design suitable for focal length adjustment and AA (alignment) assembly. The design adopts a flexible and adjustable solution, such as the design of an adjustment member, a lens holder and a sealing component, etc. These components together constitute a flexible adjustment system, so that the optical module has a large degree of freedom in the process of focal length adjustment and AA assembly, and can be finely adjusted according to actual needs. It should be emphasized that an important feature of flexible adjustment is the application of buffers, which can provide the necessary elasticity and buffering during the adjustment process, making the adjustment process smoother and more reliable; at the same time, it can also compensate for errors caused by assembly or adjustment to a certain extent, and improve the stability and accuracy of the module. The technical solution of the present application integrates the diopter adjustment function, which can simply realize focal length adjustment.

[0032] 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

[0033] 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.

[0034] Figure 1 A schematic diagram of the external structure of an optical module provided in an embodiment of the present application;

[0035] Figure 2 A structural exploded diagram of an optical module provided in an embodiment of the present application;

[0036] Figure 3 One of the cross-sectional views of the optical module provided in the embodiment of the present application;

[0037] Figure 4 A second cross-sectional view of the optical module provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of the partial structure of an optical module provided in an embodiment of the present application.

[0039] Description of reference numerals:

[0040] 1. Lens; 2. First sealing ring; 3. Elastic element; 4. Second sealing ring; 5. Pressure cover; 6. Lens barrel; 601. Guide slide groove; 7. First bracket; 701. Supporting part; 8. Buffer; 9. Second bracket; 901. Transmission part; 9011. Inclined surface; 10. Adjusting part; 1001. Pushing part; 1002. Rod; 1003. Adjusting knob; 11. Insert nut; 12. Screen bracket; 13. Screen; 14. Guide structure. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] The optical module and the smart head-mounted device provided in the embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0047] According to one embodiment of the present application, an optical module is provided. Figures 1 to 4The optical module includes a bearing assembly, a screen 13, a lens 1, a pressure cover 5, a lens bracket and an adjusting member 10; wherein the bearing assembly includes a lens barrel 6 and a screen bracket 12 arranged at one end of the lens barrel 6; the screen 13 is arranged in the screen bracket 12; the lens 1 is arranged in the lens barrel 6 and is arranged along the optical axis with the screen 13; the pressure cover 5 is arranged at one end of the lens barrel 6 away from the screen bracket 12, and a sealing assembly is arranged between the pressure cover 5 and the lens 1; the lens bracket is movably arranged in the lens barrel 6, and includes a first bracket 7 and a second bracket 9, The first bracket 7 is provided with a supporting portion 701 for supporting the lens 1, and the second bracket 9 is provided with a transmission portion 901, and a buffer member 8 is connected between the supporting portion 701 and the transmission portion 901; the adjusting member 10 is arranged on the lens barrel 6, and the adjusting member 10 is provided with a transmission thread, and one end of the adjusting member 10 abuts against the transmission portion 901; when the adjusting member 10 is adjusted, the adjusting member 10 can move axially along the transmission thread and push the transmission portion 901 through one end, so that the lens bracket moves along the optical axis in the lens barrel 6 with the lens 1.

[0048] The optical module provided in the embodiment of the present application is, for example, a VR optical module.

[0049] The optical structure design of the optical module provided in the embodiment of the present application is intended to solve the problems of complicated structure, difficult sealing, and assembly precision control in the process of VR optical module focal length adjustment and AA assembly. Specifically, the lens bracket can drive the lens 1 to move along the optical axis to adjust the distance between the screen 13 and the lens 1, thereby achieving focusing. In addition, the lens 1 can also be leveled by the lens bracket.

[0050] In the optical module provided in the embodiment of the present application, see Figures 1 to 4 , involving multiple key components, together realize the functions of focus adjustment and AA assembly. The following is an analysis of each component and its function.

[0051] The bearing assembly includes a lens barrel 6 and a screen bracket 12. The lens barrel 6 serves as the main structure of the entire optical module, providing support and positioning reference for other components such as the lens 1. The internal space of the lens barrel 6 is used to accommodate key components such as the lens and the lens bracket. The screen bracket 12 is arranged at one end of the lens barrel 6, mainly used to fix the screen 13, ensuring that the relative position relationship between the screen 13 and the lens 1 meets the design requirements.

[0052] The screen 13 is disposed in the screen bracket 12 , or is disposed at one end of the screen bracket 12 facing the lens barrel.

[0053] Specifically, see Figure 1 The screen support 12 is provided with a hollow area, and the screen 13 is installed in the hollow area. The screen 13 is used to display images, and it can emit imaging light. The screen 13 is connected to one end of the lens barrel 6 through the screen support 12, so that the position and posture of the screen can be kept stable when adjusting the focus or performing AA assembly.

[0054] Of course, the solution provided in the embodiment of the present application can also be designed so that the screen 13 can be moved along the optical axis, so that the adjustment function of the focal length etc. can be realized. In this case, the screen bracket 12 can be designed as the structure of the lens bracket.

[0055] The lens 1 is located inside the lens barrel 6 and is arranged in series with the screen 13 along the same optical axis, and is responsible for amplifying the image light emitted by the screen 13 and projecting it into the user's field of view. The position and posture of the lens 1 have a direct impact on the imaging quality.

[0056] It should be noted that the optical module provided in the embodiment of the present application includes but is not limited to using only one lens 1, and the number of lenses can be increased as needed, wherein at least one lens 1 can be moved to achieve focal length adjustment, and all lenses 1 can be moved to achieve the function of AA assembly.

[0057] The lens holder is disposed in the lens barrel 6 , and can support and move the lens 1 .

[0058] Specifically, see Figure 1 The lens support includes a first support 7, on which one or more supporting parts 701 (such as three supporting parts 701) are provided, which can be used to support the lens 1. Firstly, the supporting part 701 itself can stably support the lens; secondly, the design of the supporting part 701 needs to ensure that the lens 1 can move stably when subjected to the adjustment force, while avoiding scratching or damaging the lens surface.

[0059] The lens support also includes a second support 9 on which a transmission part 901 is disposed. The transmission part 901 has an inclined surface 9011. Figure 5 The interaction between the inclined surface 9011 and the adjusting member 10 is the key to achieve the position adjustment of the lens 1. It is worth noting that the second bracket 9 is connected to the first bracket 7 through the buffer member 8 to provide the necessary elasticity and buffer.

[0060] For the buffer member 8, see Figure 1 and Figure 5, which is specifically connected between the supporting portion 701 of the first bracket 7 and the transmission portion 901 of the second bracket 9, and is used to provide elasticity and buffering during the process of adjusting the position of the lens 1. The buffer 8 can reduce the impact and vibration during the adjustment process and protect the lens 1 and other components from damage.

[0061] The adjusting member 10 is arranged on the side wall of the lens barrel 6, and a transmission thread is arranged on the adjusting member 10. In this way, the adjusting member 10 can move axially along the transmission thread by, for example, a rotation control method, because one end of the adjusting member 10 abuts against the transmission part 901 of the second bracket 9. When the adjusting member 10 rotates, by pushing the transmission part 901, the second bracket 9 and the first bracket 7 can be moved together, thereby driving the lens 1 to move along the optical axis direction, thereby realizing the focus adjustment or lens leveling operation.

[0062] In this example of the present application, by providing a sealing component between the pressure cover 5 and the lens 1, this design significantly enhances the sealing effect of the optical module and further improves the overall performance and reliability of the module.

[0063] In the traditional optical module assembly process, glue is often needed to bond and fix the lenses. However, the glue will shrink during the curing process, affecting the accuracy of the optical module. The design of this application avoids the use of glue, which not only improves the stability of the optical module, but also conforms to the trend of environmental protection.

[0064] In summary, the bearing assembly provides stable support and positioning reference for the lens 1 and the screen 13; the screen 13 provides imaging light; the lens 1 magnifies and projects the image into the user's eyes; the lens bracket supports the lens 1 through the first bracket 7, and the second bracket 9 cooperates with the adjustment member 10 to adjust the lens 1; the buffer member 8 is used to provide elasticity and buffering during the adjustment process to protect the lens and other components; the sealing assembly is used to seal the lens. These components cooperate and work together to realize the functions of the optical module such as focal length adjustment and lens adjustment, and improve the performance and user experience of VR smart head-mounted devices, for example.

[0065] The optical module provided in the embodiment of the present application adopts a flexible adjustable solution, and the precise adjustment of the position of the lens 1 is achieved through the cooperation between the adjustment member 10 (mainly the adjustment knob 1003) exposed outside the lens barrel 6 and the lens bracket (including the first bracket 7, the buffer member 8 and the second bracket 9, etc.) inside the lens barrel 6. This design not only simplifies the structure, but also improves the flexibility and accuracy of the adjustment.

[0066] Traditional VR optical module design has extremely high requirements on the precision of structural parts. However, the optical module design of the present application can tolerate slight errors in the manufacturing process of structural parts to a certain extent through a flexible adjustment mechanism, thereby reducing the requirements for the precision of structural parts and helping to save manufacturing costs.

[0067] The optical module provided in the embodiment of the present application integrates a diopter adjustment function. The user can conveniently adjust the focal length of the lens 1 through the adjustment member 10 to adapt to the vision requirements of different users, thereby improving the applicability and user experience of the VR smart head-mounted device.

[0068] It should be noted that the adjusting member 10 can be provided as one or more, for example, three, as needed. By adjusting the multiple adjusting members 10 synchronously or independently, the vertical (along the optical axis) and tilt (forming a certain angle with the optical axis) compensation of the lens 1 can be achieved, ensuring the precise alignment between the lens 1 and the screen 13, and improving the imaging quality.

[0069] In combination with the AA assembly technology, the design of the present application can simplify the assembly process and improve assembly efficiency while ensuring the accuracy of the optical module. At the same time, by avoiding the accuracy change during the glue curing process, the assembly accuracy is further improved.

[0070] In summary, the optical module design provided in the embodiment of the present application significantly improves the performance and user experience of the entire optical module through technical means such as flexible and adjustable solutions, reducing the precision requirements of structural parts, avoiding the use of glue, improving the sealing effect, integrating the diopter adjustment function, and realizing vertical and tilt compensation of optical elements such as lens 1 (of course, it can also be applied to the screen 13).

[0071] In some examples of this application, see Figures 1 to 4 An elastic element 3 is provided between the pressure cover 5 and the lens 1 .

[0072] According to the example provided in the present application, the optical module further includes an elastic element 3. The introduction of this component further enhances the adjustment function and stability of the optical module.

[0073] According to the technical solution provided in this example of the present application, a bidirectional adjustment function is provided for the optical module.

[0074] Specifically, by arranging the elastic element 3 between the pressure cover 5 and the lens 1, a bidirectional adjustment function of the lens 1 is achieved. When the adjustment member 10 is adjusted along a first direction (such as a clockwise direction), the adjustment member 10 pushes the transmission part 901 of the second bracket 9, see Figure 5, so that the lens 1 moves in a direction away from the screen 13 along the optical axis; and when the adjusting member 10 is adjusted in a second direction (such as counterclockwise), under the elastic action of the elastic element 3, the lens 1 moves in a direction close to the screen 13 along the optical axis. This two-way adjustment function makes the focal length adjustment more flexible and accurate.

[0075] The two-way adjustment function allows users to easily adjust the focal length as needed, providing a clearer and more comfortable visual experience. At the same time, since the adjustment process is smooth and precise, users will not feel obvious vibration or impact during use, further improving the user experience.

[0076] The introduction of the elastic element 3 not only provides the necessary elastic force, but also plays a role of buffering and stabilizing during the adjustment process. For example, when the adjustment member 10 rotates, the elastic element 3 can absorb some impact and vibration, reduce unstable factors during the adjustment process, and thus improve the adjustment accuracy and stability.

[0077] In addition, the tight fit between the gland 5 and the lens barrel 6, and the elastic sealing effect between the elastic element 3 and the sealing assembly can further enhance the sealing effect of the optical module, which helps prevent external factors such as dust and moisture from entering the module and affecting the optical performance and stability.

[0078] In some examples of this application, see Figure 1 , the sealing assembly includes at least two sealing rings.

[0079] The introduction of the sealing component significantly improves the sealing performance between the gland 5 and the lens 1. The sealing ring, as a key sealing element, has good sealing and corrosion resistance, and can effectively prevent external pollutants such as dust, moisture, and oil from entering the module. This is of great significance for protecting the lens, maintaining optical performance, and extending the service life of the module.

[0080] The design of the sealing component avoids the use of adhesive materials such as glue that may pollute the environment. This design is more in line with the current trend of environmental protection and sustainable development, and helps to reduce the environmental burden in the production process.

[0081] In this application, sealing elements such as sealing rings are usually made of wear-resistant and corrosion-resistant materials and have high durability. This means that during long-term use, the sealing component can maintain its good sealing performance and extend the service life of the module.

[0082] Comparison with the prior art: Existing VR optical modules often have difficulties in sealing, and adhesive materials such as glue are required during the assembly process. This application introduces the design of a sealing component, which not only solves the sealing problem, but also avoids the use of glue, which is in line with the trend of environmental protection.

[0083] The sealing component design in the present application is combined with an elastic element (such as an elastic gasket) to achieve the function of allowing the lens to be adjusted in both directions while ensuring the sealing performance.

[0084] In some examples of the present application, the sealing assembly includes a first sealing ring 2 and a second sealing ring 4 , and the elastic element 3 is located between the first sealing ring 2 and the second sealing ring 4 .

[0085] By introducing two sealing rings: the first sealing ring 2 and the second sealing ring 4, a double sealing structure is formed, which significantly enhances the sealing performance inside the optical module. This double sealing design can more effectively block the intrusion of external pollutants (such as dust, moisture, etc.) and protect the lens and other optical components from damage.

[0086] Placing the elastic element 3 between the two sealing rings not only maintains its original elastic adjustment function, but also makes the structure of the entire sealing assembly more compact and reasonable. When subjected to external force, the elastic element 3 can absorb impact and vibration through its elastic deformation, while maintaining close contact with the two sealing rings to ensure the stability of the sealing effect.

[0087] During the process of adjusting the lens, since the elastic element 3 is located between the two sealing rings, it can provide more stable support and buffering effect.

[0088] It is worth noting that the introduction of the double sealing structure and the elastic element 3 helps to extend the service life of the optical module. The sealing ring can prevent external pollutants from corroding the internal components, while the elastic element 3 can reduce stress concentration and fatigue damage caused by mechanical wear.

[0089] In some examples of the present application, the elastic element 3 is an elastic gasket or a spring.

[0090] Elastic gaskets and springs have the characteristics of low production cost. At the same time, their installation process is relatively simple, and they can be quickly and accurately integrated into the optical module, improving production efficiency and assembly accuracy.

[0091] The present application requires that the elastic element 3 has good elastic recovery ability. Both the elastic gasket and the spring have good elastic recovery ability. After being acted upon by external force, they can quickly return to their original shape and size, thereby maintaining the stability and accuracy of the lens during the adjustment process.

[0092] Furthermore, the elastic action of the elastic gasket or spring enables the lens 1 to move smoothly during the bidirectional adjustment process. When the adjustment member 10 rotates in different directions, the elastic element can provide appropriate resistance or thrust, so that the lens 1 can move accurately along the optical axis to achieve accurate adjustment of the focal length.

[0093] In addition, when the elastic element 3 is an elastic gasket, the elastic gasket forms a soft sealing layer between the lens 1 and the pressure cover 5, which can effectively prevent external factors such as dust and moisture from entering the module. This sealing effect is of great significance for protecting optical elements and maintaining optical performance.

[0094] When the elastic element 3 is an elastic gasket, the elastic gasket is, for example, high-elastic foam or high-elastic rubber.

[0095] In some examples of this application, see Figure 1 and Figure 5 The transmission part 901 has an inclined surface 9011. The adjusting member 10 comprises a rod 1002, one end of which is provided with an adjusting knob 1003, and the other end of which is provided with a pushing part 1001, and the pushing part 1001 and the inclined surface 9011 are in contact with each other.

[0096] In this example of the present application, see Figure 1 and Figure 5 The adjusting member 10 is designed as a composite structure including a rod 1002, an adjusting knob 1003 and a pushing portion 1001, wherein one end of the rod 1002 is connected to the adjusting knob 1003, and the other end is provided with a pushing portion 1001, and the pushing portion 1001 abuts against the inclined surface 9011 on the second bracket 9 to facilitate driving the second bracket 9 to move. At this time, the first bracket 7 and the second bracket 9 move synchronously.

[0097] The design of the adjusting knob 1003 allows the user to conveniently adjust the focal length by rotating the knob 1003. The rotating action is transmitted to the pushing portion 1001 through the rod portion 1002, thereby pushing the lens holder to move, thereby achieving precise adjustment of the focal length.

[0098] The adjusting member 10 integrates the adjusting knob 1003, the rod 1002 and the pushing portion 1001 into one body, so that the entire adjusting member 10 has a compact structure and occupies a small space, which helps to reduce the overall size of the optical module and improve the wearing comfort.

[0099] The abutment design between the push part 1001 and the inclined surface 9011 makes the adjustment process more stable. The inclined surface 9011 design can guide the push part 1001 to move in a specific direction, reduce the deviation and shaking during the adjustment process, and improve the accuracy and stability of the adjustment.

[0100] Compared with the problems that may exist in the prior art, such as complicated adjustment structure, low adjustment accuracy or poor stability, the adjustment member 10 in the present application is designed through an integrated and precise design concept, which significantly improves the adjustment performance and user experience of the optical module.

[0101] In some examples of this application, see Figure 5 The pushing portion 1001 is a spherical body; when the adjusting knob 1003 is adjusted along a first direction, the rod portion 1002 moves the spherical body axially along the transmission thread, and the spherical body pushes the inclined surface 9011, so that the lens holder moves the lens 1 along the optical axis in a direction away from the screen 13.

[0102] The rolling characteristics of the spherical body make the adjustment process smoother. Compared with other shapes of push parts, the spherical body can more effectively reduce the resistance generated during the adjustment process and improve the user experience.

[0103] The spherical body, as the pushing part 1001, can naturally adapt to the different inclination angles of the inclined surface 9011, ensuring effective pushing and adjustment at any adjustment position.

[0104] The spherical body usually has high wear resistance and fatigue resistance. In the case of long-term use or frequent adjustment, the spherical body can maintain good shape and performance, reducing the risk of adjustment failure or precision loss due to wear.

[0105] Compared with the problems that may exist in the prior art, such as complex adjustment mechanism, low adjustment accuracy or unsmooth adjustment process, the spherical pusher design in this application significantly improves the adjustment performance and user experience of the optical module by simplifying the structure, improving accuracy and smoothness, etc.

[0106] As the spherical body pushes the inclined surface 9011, the movement along the axial direction of the transmission thread can be converted into the lens holder moving along the optical axis with the lens 1.

[0107] In some examples of the present application, when the adjustment knob 1003 is adjusted along a second direction, under the elastic action of the elastic element 3, the lens holder moves with the lens 1 along the optical axis toward the screen 13; wherein the second direction is opposite to the first direction.

[0108] When the adjusting member 10 is adjusted in a second direction (e.g., counterclockwise, which is different from the first direction), the lens 1 will move along the optical axis toward the screen 13 under the elastic action of the elastic element 3. The introduction of the elastic element 3 not only provides the necessary elastic force, but also plays a role in buffering and stabilizing the adjustment process. For example, when the adjusting member 10 rotates, the elastic element 3 can absorb part of the impact and vibration, reduce the unstable factors in the adjustment process, and thus improve the adjustment accuracy and stability.

[0109] In some examples of the present application, the lens barrel 6 is a metal piece, a threaded hole is provided on the side wall of the lens barrel 6, the adjustment member 10 is inserted into the threaded hole, and the transmission thread forms a threaded fit with the threaded hole.

[0110] In this example of the present application, the lens barrel 6 is made of metal and the threaded fitting method is designed accordingly. Metal parts have high strength and hardness and can withstand large external forces and impacts, so the metal lens barrel has high durability. This is especially important for VR optical modules that need to adjust the focal length frequently or are subject to accidental collisions.

[0111] Metal lens barrels have better dimensional stability under environmental conditions such as temperature changes and humidity changes. This helps maintain the accuracy and stability of the optical module and reduce errors caused by environmental changes.

[0112] The metal lens barrel has good thermal conductivity and can quickly dissipate the heat generated inside the optical module, reduce the operating temperature of the optical module, and improve the stability and reliability of the optical module.

[0113] In some examples of this application, see Figures 1 to 4 The lens barrel 6 is a plastic part, an insert nut 11 is provided on the side wall of the lens barrel 6, the adjusting member 10 is inserted into the insert nut 11, and the transmission thread and the insert nut 11 form a threaded fit.

[0114] The lens barrel 6 made of plastic is light in weight, which can make the optical module lighter and more comfortable to wear. This is especially important for users who wear VR devices for a long time. In addition, the processing cost of the lens barrel 6 made of plastic is relatively low, and it can be mass-produced through processes such as injection molding, which helps to reduce production costs.

[0115] In addition, the plastic part has good plasticity and formability, and a more complex and delicate structure can be designed. In this example of the present application, the insert nut 11 is provided by injection molding to achieve threaded cooperation with the adjusting member 10, which not only ensures the reliability of the connection, but also improves the flexibility of the design.

[0116] It should be noted that metal lens barrels may be more suitable in application scenarios that require higher strength and durability, while plastic lens barrels are more advantageous in application scenarios that pursue lightness, wearing comfort and cost control.

[0117] In some examples of this application, see Figure 1 The first bracket 7 and the second bracket 9 are annular and both match the side wall shape of the lens barrel 6; a guide structure 14 is circumferentially arranged on the outer wall of the first bracket 7 and the second bracket 9, and a guide groove 601 matching the guide structure 14 is arranged on the inner wall of the lens barrel 6, and the guide structure 14 and the guide groove 601 are set to be slidably connected, so that under the drive of the adjusting member 10, the lens bracket can move along the optical axis direction.

[0118] The sliding connection design between the guide structure 14 and the guide slot 601 provides a stable track and direction restriction for the movement of the lens holder. This design can reduce the deviation and shaking of the lens holder during movement, thereby improving the stability of focus adjustment.

[0119] The first bracket 7 and the second bracket 9 of the ring-shaped design can better disperse the weight and pressure of the lens 1 and its related components, thereby enhancing the structural strength of the entire adjustment member 10. At the same time, the design matching the side wall shape of the lens barrel 6 also helps to improve the tightness and stability of the connection between the lens bracket and the lens barrel 6.

[0120] The design of the guide structure 14 and the guide slot 601 enables the lens holder to be easily aligned and slid into the lens barrel 6 during assembly, thus simplifying the assembly process and improving assembly efficiency. In addition, this design also helps to reduce errors and damages during assembly.

[0121] The slidingly connected guide structure 14 can ensure the precise movement of the lens holder during the adjustment process. When the adjusting member 10 is rotated, through the interaction between the transmission thread and the pusher 1001, the lens holder can move smoothly along the guide slot 601, thereby achieving precise adjustment of the focal length.

[0122] The lens bracket design in the present application significantly improves the adjustment stability and adjustment accuracy of the optical module and simplifies the assembly process through the sliding connection design of the guide structure 14 and the guide groove 601.

[0123] In some examples of the present application, the supporting portion 701 and the transmission portion 901 are respectively provided as one or more, and the supporting portion 701 and the transmission portion 901 are provided in a one-to-one correspondence.

[0124] The multiple supporting parts 701 and the multiple transmission parts 901 can provide stable support for the lens 1 and more precise adjustment.

[0125] In some examples of the present application, the adjusting member 10 is provided as one or more. When the adjusting member 10 is provided as a plurality, the plurality of adjusting members 10 are centrally symmetrically distributed on the lens barrel 6 along the optical axis.

[0126] In this example of the present application, the adjusting member 10 is designed to be set to one or more, and when set to multiple (taking three as an example), these adjusting members 10 will form a central symmetrical distribution along the optical axis on the lens barrel 6. This design brings significant technical effects, which are analyzed in detail below.

[0127] (1) When the adjusting members 10 are arranged in a plurality and are symmetrically distributed along the optical axis, they can act together on the lens holder or the lens itself to achieve a more balanced and stable adjustment. This layout reduces the deflection torque generated by a single adjustment point, thereby improving the stability and accuracy of focal length adjustment.

[0128] (2) The centrally symmetrically distributed adjustment parts not only allow for focal length adjustment in the vertical direction (i.e., the optical axis direction), but also enable lens tilt adjustment by operating these adjustment parts independently or in coordination. This multi-dimensional adjustment capability enables the optical module to better adapt to the vision needs and viewing angle changes of different users.

[0129] (3) The simultaneous operation of multiple adjustment members 10 can speed up the focal length adjustment. The user can quickly adjust the focal length by rotating multiple adjustment members at the same time, or make fine adjustments by rotating specific adjustment members independently. This design improves the flexibility and efficiency of adjustment.

[0130] (4) In different application scenarios, the optical module may need to cope with different adjustment requirements. By adjusting the number and distribution of adjustment parts, the optical module provided by the present application can flexibly adapt to various complex adjustment requirements, thereby improving the adaptability and market competitiveness of the product.

[0131] In a specific example, when the number of the adjusting members 10 is three, the adjusting members 10 cooperate with the inclined surface 9011 on the second bracket 9 through their respective transmission threads and the pushing parts 1001. During the adjustment process, for example, vertical compensation of the lens can be achieved by synchronously rotating the three adjusting members, and specific tilt adjustment of the lens can be achieved by independently rotating a certain adjusting member.

[0132] Compared with the problems that may exist in the prior art, such as complex adjustment mechanism, low adjustment stability or low adjustment efficiency, the centrally symmetrical distribution design of multiple adjustment parts in this application significantly improves the adjustment performance and user experience of the VR module by enhancing adjustment stability, realizing multi-dimensional adjustment, and improving adjustment efficiency.

[0133] In summary, the design scheme of providing one or more adjusting members 10 and distributing them symmetrically along the center of the optical axis in the present application provides an efficient, stable and flexible focal length adjustment method for the optical module.

[0134] According to another embodiment of the present application, a smart head-mounted device is provided, and the smart head-mounted device includes the optical module as described in any one of the above items.

[0135] The smart head mounted device is, for example, a VR smart head mounted device, such as VR glasses or a VR helmet.

[0136] The specific implementation of the intelligent head mounted device of the embodiment of the present application can refer to the above-mentioned embodiments of the optical module, 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.

[0137] 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.

[0138] 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. An optical module, characterized in that: include: A bearing assembly comprises a lens barrel (6) and a screen support (12) arranged at one end of the lens barrel (6); A screen (13) is arranged in the screen bracket (12); A lens (1) is arranged in the lens barrel (6) and is arranged along the optical axis with the screen (13); A pressure cover (5) is arranged at one end of the lens barrel (6) away from the screen bracket (12), and a sealing component is arranged between the pressure cover (5) and the lens (1); A lens bracket is movably arranged in the lens barrel (6), comprising a first bracket (7) and a second bracket (9), wherein the first bracket (7) is provided with a supporting portion (701) for supporting the lens (1), and the second bracket (9) is provided with a transmission portion (901), and a buffer (8) is connected between the supporting portion (701) and the transmission portion (901); An adjusting member (10) is arranged on the lens barrel (6), a transmission thread is provided on the adjusting member (10), and one end of the adjusting member (10) abuts against the transmission part (901); When the adjusting member (10) is adjusted, the adjusting member (10) can move axially along the transmission thread and push the transmission part (901) through one end, so that the lens holder moves along the optical axis with the lens (1) in the lens barrel (6).

2. The optical module according to claim 1, characterized in that: An elastic element (3) is arranged between the pressure cover (5) and the lens (1).

3. The optical module according to claim 2, characterized in that: The sealing assembly includes at least two sealing rings.

4. The optical module according to claim 3, characterized in that: The sealing assembly comprises a first sealing ring (2) and a second sealing ring (4), and the elastic element (3) is located between the first sealing ring (2) and the second sealing ring (4).

5. The optical module according to claim 4, characterized in that: The elastic element (3) is an elastic gasket or a spring.

6. The optical module according to claim 2, characterized in that: The transmission part (901) has an inclined surface (9011); The adjusting member (10) comprises a rod portion (1002), one end of the rod portion (1002) is provided with an adjusting knob (1003), the other end of the rod portion (1002) is provided with a pushing portion (1001), and the pushing portion (1001) and the inclined surface (9011) are in contact with each other.

7. The optical module according to claim 6, characterized in that: The pushing part (1001) is a spherical body; When the adjusting knob (1003) is adjusted in a first direction, the rod (1002) moves the spherical body axially along the transmission thread, and the spherical body pushes the inclined surface (9011), so that the lens holder moves the lens (1) along the optical axis in a direction away from the screen (13).

8. The optical module according to claim 7, characterized in that: When the adjusting knob (1003) is adjusted along a second direction, under the elastic action of the elastic element (3), the lens holder moves with the lens (1) along the optical axis in a direction close to the screen (13); wherein the second direction is opposite to the first direction.

9. The optical module according to claim 1, characterized in that: The lens barrel (6) is a metal part. A threaded hole is provided on the side wall of the lens barrel (6). The adjusting part (10) is inserted into the threaded hole. The transmission thread and the threaded hole form a threaded fit.

10. The optical module according to claim 1, characterized in that: The lens barrel (6) is a plastic part. An insert nut (11) is arranged on the side wall of the lens barrel (6). The adjusting member (10) is inserted into the insert nut (11). The transmission thread and the insert nut (11) form a threaded fit.

11. The optical module according to claim 1, characterized in that: The first bracket (7) and the second bracket (9) are annular and both match the shape of the side wall of the lens barrel (6); A guide structure (14) is provided on the outer wall of the first bracket (7) and the second bracket (9) along the circumferential direction, and a guide groove (601) matching with the guide structure (14) is provided on the inner wall of the lens barrel (6). The guide structure (14) and the guide groove (601) are arranged to be slidably connected, so that under the drive of the adjustment member (10), the lens bracket can move along the optical axis direction.

12. The optical module according to claim 1, characterized in that: The supporting part (701) and the transmission part (901) are respectively provided as one or more, and the supporting part (701) and the transmission part (901) are provided in a one-to-one correspondence.

13. The optical module according to claim 12, characterized in that: The adjusting member (10) is provided as one or more; When the adjusting member (10) is provided in plurality, the plurality of adjusting members (10) are distributed along the optical axis in a centrally symmetrical manner on the lens barrel (6).

14. A smart head-mounted device, characterized in that: include: An optical module as claimed in any one of claims 1 to 13.

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