Optical module and wearable device

Abstract

The embodiment of the application provides an optical module and a wearable device; the optical module comprises an imaging lens group, a first support, a lens barrel, a screen support, a sliding piece and a knob; the imaging lens group comprises a first lens arranged on the first support, and the first lens is a cut-edge lens; the first support is arranged in the lens barrel; the screen support is arranged at one end of the lens barrel, and an assembly part is arranged on the side of the lens barrel away from the lens barrel; the assembly part comprises a plurality of assembly segments arranged at intervals and surrounding a circular ring structure, and a first thread is arranged on the assembly segment; the sliding piece is arranged on the assembly part and connected with the first support; the sliding piece comprises a limiting shaft and a hollow area arranged around the limiting shaft; the hollow area is arranged in one-to-one correspondence with the assembly segment, and the assembly segment extends from the corresponding hollow area; the knob comprises a connecting hole; the knob is sleeved outside the assembly part; the limiting shaft is inserted into the connecting hole; a second thread is arranged on the inner wall of the knob; and when the knob is rotated, the thread movement of the second thread and the first thread is converted into movement of the sliding piece and the first support along the axial direction of the lens barrel.

Description

Technical Field

[0001] This application relates to the field of optical imaging technology, and more specifically, to an optical module and a wearable device. Background Technology

[0002] Virtual Reality (VR), also known as immersive technology, is a novel and practical technology that emerged in the 20th century. It encompasses computer science, electronic information technology, and simulation technology, and its basic implementation involves computers simulating virtual environments to create a sense of immersion. With the continuous development of social productivity and science and technology, the demand for VR technology is increasingly strong across various industries. At the same time, due to the significant differences in visual acuity among users, VR devices need to meet the needs of people with different vision. Therefore, it is essential for VR devices to have a vision adjustment function.

[0003] In existing technologies, diopter adjustment is typically achieved by rotating a circular lens to adjust the distance between a movable and a fixed lens, assuming the lens has no chamfer. However, when the lens in the optical design has a chamfer, the traditional method of rotating the movable lens to change its position within the lens barrel becomes unsuitable. The advantage of using chamfered lenses in existing VR devices is that they avoid obstructing the wearer's nose bridge and brow bone areas, leading to their increasing use in VR devices. Therefore, researching diopter adjustment schemes for optical modules incorporating chamfered lenses is essential. Summary of the Invention

[0004] The purpose of this application is to provide a new technical solution for an optical module and a wearable device, which can realize diopter adjustment when the lens in the optical module has a chamfered edge.

[0005] In a first aspect, this application provides an optical module. The optical module includes:

[0006] An imaging lens assembly, the imaging lens assembly including at least a first lens, the first lens being a chamfered lens;

[0007] The first support, wherein the first lens is disposed within the first support;

[0008] The lens barrel, wherein the first support is movably disposed within the lens barrel;

[0009] A screen bracket is provided at one end of the lens barrel. The side of the screen bracket away from the lens barrel is provided with an assembly part. The assembly part includes multiple assembly segments, which are spaced apart and form a circular structure. The outer wall of each assembly segment is provided with a first thread.

[0010] A sliding member is provided on the assembly part and connected to the first bracket. The sliding member includes a limiting shaft and a hollow area arranged around the limiting shaft. The hollow area and the assembly segment are arranged in a one-to-one correspondence and the assembly segment extends out from the corresponding hollow area.

[0011] A knob, the knob including a connecting hole, the knob being sleeved on the outside of the assembly part, the limiting shaft being inserted into the connecting hole, and the inner wall of the knob being provided with a second thread adapted to the first thread;

[0012] When focusing, rotating the knob transforms the rotational motion of the second thread and the first thread into driving the slider to move the first bracket along the axial direction of the lens barrel, so that the first lens can match the diopter of the target object.

[0013] Optionally, the first support includes a frame and at least two pillars disposed on one side of the frame, the pillars passing through the lens barrel and connected to the sliding member;

[0014] The frame has a lens mounting area, and the first lens is fixedly mounted in the lens mounting area.

[0015] Optionally, the support pillars are configured as three, and the three support pillars are evenly distributed along the periphery of the frame.

[0016] Optionally, the slider is provided with a foot on its edge, and the foot is provided in a one-to-one correspondence with the support column. The support column passes through the lens barrel and is connected to the corresponding foot, so that the slider is connected to the first bracket as a whole.

[0017] Optionally, the support leg is provided with an assembly hole, and one end of the support column passes through the assembly hole and is fixed on the back of the support leg by a retaining spring.

[0018] Optionally, each of the hollowed-out areas forms a circular avoidance area, and any two adjacent hollowed-out areas are separated by a separator;

[0019] One end of the limiting shaft is connected to each of the separators and is located at the center of the avoidance area.

[0020] Optionally, the screen bracket includes a support body and an electronic control unit connected to the support body;

[0021] The electrical control unit is used to form an electrical connection with the display screen housed within the support body.

[0022] Optionally, the imaging lens group further includes a second lens, which is configured as a chamfered lens, with the chamfered side of the second lens corresponding to the chamfered side of the first lens;

[0023] The second lens is located at the end of the lens barrel away from the screen bracket.

[0024] Optionally, the second lens is bonded and fixed inside the second bracket, the second bracket having a side portion adapted to the cut edge side of the second lens, and the second bracket is fixedly disposed at one end of the lens barrel away from the screen bracket.

[0025] Optionally, the imaging lens assembly further includes a third lens, which is disposed inside the lens barrel and located on one side of the screen bracket.

[0026] Optionally, the first lens, the second lens, and the third lens are arranged at intervals along the axial direction of the lens barrel, and the first lens, the second lens, and the third lens are located on the same optical axis.

[0027] Optionally, the limiting shaft includes a shaft body and a snap-fit ​​element disposed on the outer wall of the shaft body;

[0028] The shaft is a hollow structure, and two opposing U-shaped grooves are provided at the end of the shaft away from the hollow area;

[0029] When the shaft is inserted into the connecting hole, the U-shaped groove can cause the shaft to undergo elastic deformation so that the snap-fit ​​member can enter the connecting hole;

[0030] After the shaft is inserted into the connecting hole, the snap-fit ​​member is used to stop the shaft from dislodging from the connecting hole.

[0031] Optionally, the outer wall of the knob is provided with an anti-slip structure.

[0032] Secondly, this application provides a wearable device, the wearable device comprising:

[0033] Casing; and

[0034] The optical module as described in the first aspect is disposed in the housing.

[0035] Optionally, the housing is a lens frame, and the lens frame is provided with two lens frames. The optical module is provided with two lenses, and the two optical modules are disposed in the two lens frames.

[0036] The beneficial effects of this application are as follows:

[0037] This application provides an optical module in which a movable first lens is set as a chamfered lens. The design converts the screw rotation of the knob into the up-and-down movement of the slider. The slider can drive the first lens to translate along the axial direction of the lens barrel inside the lens barrel, thus realizing diopter adjustment when the lens in the optical module has a chamfer.

[0038] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0040] Figure 1 This is an exploded view of the optical module provided in the embodiments of this application;

[0041] Figure 2 This is one of the structural schematic diagrams of the optical module provided in the embodiments of this application;

[0042] Figure 3 This is the second schematic diagram of the structure of the optical module provided in the embodiments of this application;

[0043] Figure 4 The third schematic diagram of the structure of the optical module provided in the embodiments of this application;

[0044] Figure 5 This is a schematic diagram of the structure of the second bracket of the optical module provided in the embodiments of this application;

[0045] Figure 6 This is a schematic diagram of the structure of the second lens of the optical module provided in the embodiments of this application;

[0046] Figure 7 This is a schematic diagram of the structure of the first lens of the optical module provided in the embodiments of this application;

[0047] Figure 8 This is a schematic diagram of the structure of the first bracket of the optical module provided in the embodiments of this application;

[0048] Figure 9 This is a schematic diagram of the lens barrel structure of the optical module provided in the embodiments of this application;

[0049] Figure 10 This is a schematic diagram of the screen bracket structure of the optical module provided in the embodiments of this application;

[0050] Figure 11 This is a schematic diagram of the structure of the slider of the optical module provided in the embodiments of this application;

[0051] Figure 12 One of the schematic diagrams of the knob of the optical module provided in the embodiments of this application;

[0052] Figure 13 This is a second schematic diagram of the structure of the knob of the optical module provided in the embodiments of this application.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. First lens; 101. Lens edge A; 2. First bracket; 201. Support column; 202. Lens mounting area; 203. Longitudinal section A; 3. Lens barrel; 301. Through hole; 302. Stop; 4. Screen bracket; 401. Assembly part; 4011. Assembly section; 402. Electrical control part; 403. First thread; 5. Sliding part; 501. Limiting shaft; 5011. Snap-fit ​​part; 5012. U-shaped groove; 502. Hollowed-out area; 503. Support leg; 504. Divider; 6. Knob; 601. Second thread; 602. Connecting hole; 603. Anti-slip structure; 7. Snap ring; 8. Second lens; 801. Lens edge B; 9. Second bracket; 901. Longitudinal section B; 10. Third lens. Detailed Implementation

[0055] 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, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0056] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0057] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0058] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0060] According to one aspect of the embodiments of this application, an optical module is provided, which is suitable for wearable devices. The wearable device includes, for example, a head-mounted display (HMD). The head-mounted display includes, for example, a VR head-mounted device, which may take the form of VR glasses or a VR helmet, etc., and the embodiments of this application do not impose specific limitations thereon.

[0061] In VR product design, taking VR glasses as an example, to improve wearing comfort by avoiding areas such as the user's nose bridge and brow bone, the lenses used in the optical module can be chamfered. This results in a non-circular structure for the lenses, and consequently, a non-circular shape for the lens barrel. In VR glasses, the chamfered lenses are irregularly shaped.

[0062] While the use of chamfered lenses in VR products can improve wearing comfort, the optical design of chamfered lenses also presents drawbacks. For example, due to the significant differences in vision among users, it is necessary to adjust the spacing between lenses or the distance between the lenses and the display screen to meet the refractive power (vision) adjustment. However, after being chamfered, the lenses have an irregular shape, making it impossible to rotate the lenses using traditional adjustment mechanisms and convert the rotational motion into movement along the optical axis, thus failing to meet the usage needs of people with different vision.

[0063] The optical module provided in this application embodiment is described in [reference]. Figures 1 to 4 The optical module includes: an imaging lens group, a first support 2, a lens barrel 3, a screen support 4, a slider 5, and a knob 6. The imaging lens group includes at least a first lens 1, which is configured as a chamfered lens. The first lens 1 is disposed within the first support 2. The first support 2 is movably disposed within the lens barrel 3. The screen support 4 is disposed at one end of the lens barrel 3, and the side of the screen support 4 facing away from the lens barrel 3 has an assembly part 401. (See also...) Figure 10 The assembly part 401 includes multiple assembly segments 4011, which are spaced apart and form a circular structure. A first thread 403 is provided on the outer wall of each assembly segment 4011. A sliding member 5 covers the assembly part 401 and is connected to the first bracket 2. The sliding member 5 includes a limiting shaft 501 and a hollow area 502 surrounding the limiting shaft 501. The hollow area 502 corresponds one-to-one with each assembly segment 4011, and each assembly segment 4011 extends from its corresponding hollow area 502. (See also...) Figure 12 and Figure 13 The knob 6 includes a connecting hole 602. The knob 6 is sleeved on the outside of the assembly part 401. The limiting shaft 501 is inserted into the connecting hole 602. The inner wall of the knob 6 is provided with a second thread 601 that is adapted to the first thread 403.

[0064] When focusing, the knob 6 can be rotated, and the rotational motion of the second thread 601 and the first thread 403 is converted into driving the slider 5 to drive the first bracket 2 to move along the axial direction of the lens barrel 3, so that the first lens 1 can match the vision of the target object.

[0065] Traditional VR optical design schemes that include multiple lenses are mostly fixed-focus schemes. Based on this, there is a preset interval between each lens in the imaging lens group, and the diopter of the entire optical module cannot be adjusted.

[0066] To achieve diopter adjustment in an optical module, current technology typically involves incorporating a movable lens within the imaging lens assembly. This movable lens is usually circular in shape. Under the control of an adjusting mechanism, it can rotate while simultaneously moving linearly along its own optical axis, thus adjusting its position and consequently the distance between the movable and fixed lenses in the optical module, thereby adjusting the diopter. However, the key to this diopter adjustment scheme is that the movable lens in the optical module must be circular. This is unsuitable for chamfered lenses. This is because chamfered lenses, being non-circular, cannot be controlled to move linearly along their own optical axis during rotation. In other words, traditional diopter adjustment schemes for optical modules are inapplicable when dealing with chamfered lenses.

[0067] The focusing (diopter adjustment) scheme designed in the optical module provided in the above embodiments of this application is not limited by the shape of the lens; it is suitable not only for chamfered lenses but also for circular lenses. In other words, the focusing scheme of the optical module provided in the embodiments of this application does not have specific requirements on the shape of the lens, and its applicability is wide.

[0068] In the embodiments of this application, the first lens 1 is configured as a chamfered lens, see [link to relevant documentation]. Figure 1 and Figure 7 Considering that the first lens 1 is used as a movable lens in the entire optical module and has an irregular shape with chamfered edges, the first lens 1 is designed not to rotate, but to move linearly along the axis of the lens barrel 3 (that is, along its own optical axis) under drive.

[0069] Specifically, the first lens 1 is placed inside the first bracket 2 and assembled into the lens barrel 3 via the first bracket 2. Simultaneously, the first bracket 2 is also connected to a screen bracket 4 supporting the display screen. The screen bracket 4 is designed as an assembly part 401 with a circular structure, and is equipped with a corresponding sliding member 5 and a knob 6. The knob 6 can rotate relative to the assembly part 401, converting the threaded rotational motion into linear motion driving the sliding member 5 along the axial direction of the lens barrel 3. Since the sliding member 5 is integrated with the first bracket 2, the movement of the sliding member 5 drives the first bracket 2 to move the first lens 1 axially within the lens barrel 3. Thus, the first lens 1 can move linearly along the axial direction of the lens barrel 3 with the first bracket 2, allowing it to move closer to or further away from the display screen, thereby achieving the purpose of matching the vision of the target object according to the specific focusing requirements.

[0070] In other words, the technical solution provided in this application embodiment, through a novel structural design, enables the first lens 1 with a chamfered edge to perform only linear motion under drive, without needing to convert to linear motion through rotational motion. Thus, there are no restrictions on the shape of the first lens 1.

[0071] In this embodiment, the rotating component is transferred from the movable lens (the first lens 1 in this application) to other components such as the screen bracket 4 and the slider 5. Specifically, by providing a circular mounting part 401 on the screen bracket 4, which cooperates with the slider 5 and the knob 6, the threaded rotational motion between the knob 6 and the mounting part 401 can be converted into the linear motion of the slider 5. Thus, the slider 5 directly drives the first lens 1 to produce linear motion within the lens barrel 3. As the position of the first lens 1 changes within the lens barrel 3, free matching of the diopter can be achieved.

[0072] In the embodiments described above in this application, the movable first lens 1 is a chamfered lens, which has a lens chamfer A101, see [link to previous document]. Figure 1 and Figure 7 This results in the first lens 1 having a non-circular structure, i.e., an irregular shape. Therefore, the corresponding first support 2 should also be designed with a longitudinal section that matches the cut edge A101 of the lens, as shown in [reference needed]. Figure 8 The edge of the first support 2 has a longitudinal section A203. At this time, the lens barrel 3 has a non-circular structure, which can avoid the wearer's nose bridge and brow bone areas, thus improving wearing comfort.

[0073] In the embodiments described above in this application, the first support 2 is used to support the first lens 1 with a chamfered edge. The first support 2 can protect the first lens 1 and facilitate the assembly and movement control of the first lens 1 within the lens barrel 3.

[0074] The optical module provided in this application embodiment is designed with a first lens 1 having a chamfered edge that can move linearly along the axis of the lens barrel 3 within a set range. This allows adjustment of the position of the first lens 1 within the lens barrel 3, which in turn allows adjustment of the distance between the display screen and the first lens 1, thereby enabling adjustment of the refractive power to accurately match the user's vision.

[0075] The optical solution provided in this application provides an optical module that can be used by people with different visual acuity. This can improve the user experience for users who wear glasses. Users do not need to wear glasses; they can adjust their visual acuity using the optical module's diopter adjustment function. This is beneficial for improving the user's visual experience.

[0076] Optionally, the rotation of the knob 6 can be driven by a drive mechanism.

[0077] Of course, the rotation of the knob 6 can also be driven manually. This application does not impose specific restrictions on the driving method for driving the knob 6 to rotate.

[0078] It should be noted that the optical focusing scheme provided in this application embodiment is particularly suitable for lens barrels with large chamfered lenses, and of course it is also applicable to conventional lens barrels with round lenses, with a wide range of applications.

[0079] In the optical module provided in this application embodiment, the screen bracket 4 is designed to be fixed. That is, with the display screen in the optical module fixed, the distance between the display screen and the first lens 1 can be precisely adjusted by controlling the linear movement of the first lens 1.

[0080] The optical module provided in this application embodiment includes an imaging lens group, which includes at least one movable lens for adjusting diopter, and may also include one or more fixed lenses.

[0081] In one example, see Figure 1 The imaging lens group of the optical module includes three lenses, one of which is a movable lens and a chamfered lens (e.g., ...). Figure 1The first lens shown is 1), while the other two lenses are fixed. Simultaneously, optical devices such as beam splitters, phase delayers, and polarization reflectors can be incorporated into this optical module to form a pancake structure. The imaging light rays are refracted between these pancakes, extending the light propagation path and facilitating clearer imaging. This pancake design reduces the size and weight of the optical module along the optical axis, enabling thinner and lighter VR devices and improving wearing comfort.

[0082] It should be noted that in the optical module of this application embodiment, the number of lenses can be flexibly adjusted according to specific needs.

[0083] The beam-splitting element is, for example, a semi-transparent and semi-reflective device, allowing a portion of the light to pass through while reflecting the rest. The reflectivity of the beam-splitting element is, for example, 47% to 53%.

[0084] The phase retarder is, for example, a quarter-wave plate. Of course, the phase retarder can also be other phase retarders such as a half-wave plate, as needed. The phase retarder can be used to change the polarization state of light. For example, it can be used to convert linearly polarized light into circularly polarized light, or vice versa.

[0085] The polarization reflecting element is a polarization reflector that reflects horizontally linearly polarized light and transmits vertically linearly polarized light, or any other polarization reflector that reflects linearly polarized light at a specific angle and transmits linearly polarized light in a direction perpendicular to that angle.

[0086] In embodiments of this application, the phase delayer and the polarization reflection element work together to resolve and transmit light.

[0087] The arrangement of the beam splitter, the phase retarder, and the polarization reflection element within the lens assembly is relatively flexible, but it must be ensured that the phase retarder is positioned between the beam splitter and the polarization reflection element.

[0088] See some examples in this application. Figure 8 The first bracket 2 includes a frame and at least two support columns 201 disposed on one side of the frame. The support columns 201 pass through the lens barrel 3 and are connected to the sliding member 5. A lens mounting area 202 is provided on the frame, and the first lens 1 is fixedly disposed in the lens mounting area 202.

[0089] The first lens 1 is fixed in the lens mounting area 202 by adhesive bonding, for example.

[0090] The shape and size of the lens mounting area 202 need to be adapted to the first lens 1 to better accommodate and protect the first lens 1, so that the first lens 1 and the first bracket 2 can be integrated. In this way, as the first bracket 2 moves, the first lens 1 can move synchronously, the connection between the first lens 1 and the first bracket 2 is strong, and the lens is not easy to fall off.

[0091] The first bracket 2 has a cut edge on its side that matches the first lens 1. This cut edge can be... Figure 8 The longitudinal section A203 is shown in the figure.

[0092] The support column 201 and the frame are, for example, an integrated design.

[0093] The support column 201 can be used to connect the first bracket 2 and the slider 5 together. In this way, the slider 5 can move the first bracket 2. To increase the stability of the connection and movement, multiple supports can be provided.

[0094] Optionally, the support column 201 is configured as three, and the three support columns 201 are evenly distributed along the periphery of the frame.

[0095] The number of the support pillars 201 is set to three, so that the first support 2 and the sliding member 5 form a three-point pushing relationship. Compared with the single-point and double-point pushing methods, this method is more reliable. When the first support 2 moves along the axis of the lens barrel 3 with the first lens 1, it is less likely to tilt and get stuck, and the movement is also more stable.

[0096] See Figure 9 The lens barrel 3 has a through hole 301 on its side for the support column 201 to pass through. The first bracket 2 is disposed inside the lens barrel 3, and the support column 201 of the first bracket 2 passes through the through hole 301 and is connected to the sliding member 5 as a whole.

[0097] See some examples in this application. Figure 1 and Figure 11 The sliding member 5 is provided with a foot 503 on its edge. The foot 503 is provided in a one-to-one correspondence with the support column 201. The support column 201 passes through the lens barrel 3 and is connected to the corresponding foot 503, so that the sliding member 5 is connected to the first bracket 2 as a whole.

[0098] In the optical module provided in this application embodiment, the first bracket 2 and the sliding member 5 are integrated, and the connection between the two is achieved through the support column 201 on the first bracket 2.

[0099] Based on the above example of this application, see Figure 11 The edge of the slider 5 is provided with a special support foot 503, which is used to form a connection with the support column 201. This design does not affect the structural design of the main body of the slider 5, and makes the connection between the slider 5 and the first bracket 2 simple and easy to perform.

[0100] Optionally, see Figure 11 The support leg 503 is provided with mounting holes; see also Figure 3 One end of the support column 201 passes through the mounting hole and is fixed on the back of the support leg 503 by a retaining spring 7.

[0101] When connecting the first bracket 2 and the slider 5, the support column 201 on the first bracket 2 passes through the side of the lens barrel 3 and connects to the support foot 503 of the slider 5, and the support column 201 is further fixed by the snap ring 7, which makes the first bracket 2 and the slider 5 more firmly connected together.

[0102] See Figure 1 and Figure 3 The retaining spring 7 is a thin, ring-shaped structure with notches on its edges, and it serves as a fastener. The fastening method of the retaining spring 7 is simple. The advantage of using the retaining spring 7 to fix the first bracket 2 and the sliding member 5 in this application is that it eliminates the need for screws or other components, and disassembly and assembly are relatively simple and convenient, which is beneficial for subsequent maintenance and repair.

[0103] See some examples in this application. Figure 11 Each of the hollowed-out areas 502 forms a circular avoidance area, and any two adjacent hollowed-out areas 502 are separated by a separator 504;

[0104] One end of the limiting shaft 501 is connected to each of the separators 504 and is located at the center of the avoidance area.

[0105] See Figure 10 and Figure 11 The main body of the slider 5 is provided with a clearance area, which allows the assembly part 401 on the screen bracket 4 to extend out of the clearance area and form a threaded engagement with the knob 6.

[0106] See Figure 10 Since the assembly part 401 includes multiple spaced assembly segments 4011, and the multiple assembly segments 4011 form a ring structure, for adaptation, the avoidance area is designed to include multiple spaced hollow areas 502, and the multiple hollow areas 502 ultimately form a circular structure. Based on this, each hollow area 502 is, for example, fan-shaped, see [reference needed]. Figure 11 .

[0107] The limiting shaft 501 is used to connect with the knob 6.

[0108] Specifically, the knob 6 and the mounting part 401 of the screen bracket 4 can be screwed in with a thread, and can also be limited by the limiting shaft 501 located in the center. This allows the sliding member 5 to move stably up and down as the knob 6 rotates, thereby smoothly driving the first bracket 2 to carry the first lens 1 in a linear movement, achieving the purpose of diopter adjustment.

[0109] In one example, see Figure 10 and Figure 11 The assembly part 401 includes four spaced-apart assembly segments 4011 that form a ring. The clearance area on the slider 5 includes four hollow areas 502, each of which is fan-shaped and spaced-apart to form a circle. Each assembly segment 4011 can extend from a corresponding hollow area 502, so that the entire assembly part 401 is exposed. The lower end of the limiting shaft 501 can be connected to the center of the clearance area through each assembly segment 4011. At the same time, the limiting shaft 501 is also located at the center of the knob 6 and can support the knob 6.

[0110] See some examples in this application. Figure 10 The screen bracket 4 includes a support body and an electrical control unit 402 connected to the support body; the electrical control unit 402 is used to form an electrical connection with the display screen housed in the support body.

[0111] The support body of the screen bracket 4 can be used to mount the display screen. The display screen can be fixed inside the support body, for example, by adhesive bonding. The electrical control unit 402 is used to form an electrical connection with the display screen.

[0112] See some examples in this application. Figure 1 , Figure 2 and Figure 6 The imaging lens group further includes a second lens 8, which is configured as a chamfered lens, with the chamfered side of the second lens 8 corresponding to the chamfered side of the first lens 1; the second lens 8 is located at one end of the lens barrel 3 away from the screen bracket 4.

[0113] The optical module provided in this application embodiment includes not only the first lens 1 described above, but also a second lens 8 in the imaging lens group. Specifically, the imaging lens group may include one movable lens, or one or more fixed lenses.

[0114] In the example above, the second lens 8 is a fixed lens. In the example above in this application, the second lens 8 is disposed at one end of the lens barrel 3, and it is also a chamfered lens.

[0115] Furthermore, in the example above, the second lens 8 can be the first lens on the side closest to the human eye. This lens is fixed in place to ensure image quality and user comfort when viewing the image.

[0116] By adjusting the position of the first lens 1 within the lens barrel 3, the distance between the first lens 1 and the second lens 8 on the side closer to the human eye can be adjusted, thereby matching the user's visual acuity. The optical module provided in this application embodiment achieves a zoom solution by controlling the movement of the first lens 1 relative to the second lens 8 within the lens barrel 3 while ensuring image quality.

[0117] Among them, see Figure 9 The lens barrel 3 is, for example, a hollow structure to accommodate optical components such as lenses, and has two opposing ends, such as a first end and a second end. A lens mounting hole can be provided on the first end for mounting a second lens 8, thus allowing the second lens 8 to be fixedly mounted on the lens barrel 3. The first end of the lens barrel 3 is designed, for example, to be located on the side closer to the human eye during use.

[0118] The lens barrel 3 also has a second end, which is positioned opposite to the first end. Specifically, when the first end faces the human eye, the second end is away from the human eye and located on the side where the display screen is located in the optical module. The display screen is then fixed to the second end of the lens barrel 3 by the screen bracket 4.

[0119] Optionally, the second lens 8 is bonded and fixed inside the second bracket 9, see [reference]. Figure 5 and Figure 6 The second bracket 9 has a side portion that is adapted to the cut edge side of the second lens 8, and the second bracket 9 is fixedly disposed at one end of the lens barrel 3 away from the screen bracket 4.

[0120] The second bracket 9 supports the second lens 8 and can fix the second lens 8 to the end of the lens barrel 3 near the human eye. The second bracket 9 can protect the second lens 8 and facilitate assembly.

[0121] See Figure 6 Since the second lens 8 has a lens cut edge B801, the corresponding side of the second bracket 9 has a longitudinal cut surface B901. (See attached image) Figure 5 The second bracket 9 has an assembly area for assembling the second lens 8.

[0122] See some examples in this application. Figure 1 The imaging lens assembly also includes a third lens 10, which is disposed inside the lens barrel 3 and located on one side of the screen bracket 4.

[0123] The third lens 10 is positioned close to the screen bracket 4 and is a fixed lens. The third lens 10 can be a chamfered lens or a conventional circular lens; this embodiment does not impose any restrictions on this.

[0124] The first lens 1, the second lens 8, and the third lens 10 are arranged at intervals along the axial direction of the lens barrel 3, and the first lens 1, the second lens 8, and the third lens 10 are located on the same optical axis.

[0125] See some examples in this application. Figure 1 and Figure 11 The limiting shaft 501 includes a shaft body and a snap-fit ​​member 5011 provided on the outer wall of the shaft body; the shaft body has a hollow structure, and two opposing U-shaped grooves 5012 are provided at one end of the shaft body away from the hollow area 502;

[0126] When the shaft is inserted into the connecting hole 602, the U-shaped groove 5012 can cause the shaft to undergo elastic deformation so that the snap-fit ​​5011 can enter the connecting hole 602;

[0127] After the shaft is inserted into the connecting hole 602, the snap-fit ​​member 5011 is used to stop the shaft from dislodging from the connecting hole 602.

[0128] For the end of the limiting shaft 501 that is inserted into the connecting hole 602 of the knob 6, the design of opening a U-shaped groove allows the end of the limiting shaft 501 to have a certain elasticity, which can produce elastic deformation when inserted into the connecting hole 602, which is beneficial for the limiting shaft 501 to bring the snap-fit ​​5011 into the connecting hole 602.

[0129] When the limiting shaft 501 is inserted into the connecting hole 602 of the knob 6, the snap-fit ​​member 5011 on the limiting shaft 501 can form a stop to prevent the limiting shaft 501 from coming out of the connecting hole 602. This increases the stability of the connection between the limiting shaft 501 and the knob 6.

[0130] See some examples in this application. Figure 12 The outer wall of the knob 6 is provided with an anti-slip structure 603.

[0131] The anti-slip structure 603 is, for example, a continuous convex ridge structure.

[0132] Of course, the anti-slip structure can also be other anti-slip pattern structures. This is used to prevent slippage when manually rotating the knob 6, which would affect the focusing accuracy.

[0133] See a specific example in this application. Figures 1 to 4 The optical module includes an imaging lens group, a lens barrel 3, a screen bracket 4, a slider 5, and a knob 6;

[0134] The imaging lens group includes a first lens 1, a second lens 8, and a third lens 10;

[0135] See Figure 7 and Figure 8 The first lens 1 is configured as a chamfered lens, and the first lens 1 is disposed within the first support 2, and is movably disposed within the lens barrel 3 via the first support 2; see also Figure 5 and Figure 6 The second lens 8 is configured as a chamfered lens, with the chamfered side of the second lens 8 corresponding to the chamfered side of the first lens 1; the second lens 8 is fixed inside the second bracket 9, which is located at opposite ends of the lens barrel 3, along with the screen bracket 4; in use, the second bracket 9 is close to the human eye; the third lens 10 is fixed inside the lens barrel 3 and located on one side of the screen bracket 4; the first lens 1, the second lens 8, and the third lens 10 are spaced apart along the axial direction of the lens barrel 3, and are located on the same optical axis;

[0136] Among them, see Figure 8 The first support 2 includes a frame and three support columns 201 disposed on one side of the frame, and the three support columns 201 are evenly distributed along the periphery of the frame; the support columns 201 pass through the lens barrel 3 and are connected to the sliding member 5; a lens mounting area 202 is provided on the frame, and the first lens 1 is bonded and fixed in the lens mounting area 202.

[0137] See Figure 10 The screen bracket 4 includes a support body and an electrical control unit 402 connected to the support body; the electrical control unit 402 is used to form an electrical connection with the display screen housed in the support body; the screen bracket 4 is provided with an assembly part 401 on the side away from the mirror barrel 3, the assembly part 401 includes four assembly sections 4011, and the four assembly sections 4011 are spaced apart and form a ring structure, and the outer wall of the assembly section 4011 is provided with a first thread 403;

[0138] See Figure 11The sliding member 5 is covered on the outside of the assembly part 401. The edge of the sliding member 5 is provided with a support foot 503. The support foot 503 is provided in a one-to-one correspondence with the support column 201. The support column 201 passes through the lens barrel 3 and is connected to the corresponding support foot 503, so that the sliding member 5 is connected to the first bracket 2 as a whole. The support foot 503 is provided with an assembly hole. One end of the support column 201 passes through the assembly hole and is fixed on the back of the support foot 503 by a retaining spring 7.

[0139] The sliding member 5 includes a limiting shaft 501 and a hollow area 502 surrounding the limiting shaft 501. The hollow area 502 corresponds one-to-one with the assembly section 4011, and the assembly section 4011 extends from the corresponding hollow area 502. The four hollow areas 502 form a circular clearance area, and any two adjacent hollow areas 502 are separated by a separator 504. One end of the limiting shaft 501 is connected to the four separators 504 and is located at the center of the clearance area.

[0140] The limiting shaft 501 includes a shaft body and a snap-fit ​​member 5011 disposed on the outer wall of the shaft body; the shaft body has a hollow structure, and two opposing U-shaped grooves 5012 are provided at one end of the shaft body away from the hollow area 502;

[0141] See Figure 12 and Figure 13 The knob 6 includes a connecting hole 602. The knob 6 is sleeved on the outside of the assembly part 401. The limiting shaft 501 is inserted into the connecting hole 602. The inner wall of the knob 6 is provided with a second thread 601 that is adapted to the first thread 403. The outer wall of the knob 6 is provided with an anti-slip structure 603.

[0142] When the shaft is inserted into the connecting hole 602, the U-shaped groove 5012 can cause the shaft to undergo elastic deformation so that the snap-fit ​​5011 enters the connecting hole 602; after the shaft is inserted into the connecting hole 602, the snap-fit ​​5011 is used to stop the shaft from coming out of the connecting hole 602.

[0143] When focusing, rotating the knob 6 causes the rotational motion of the second thread 601 and the first thread 403 to drive the slider 5 to move the first bracket 2 along the axial direction of the lens barrel 3, so that the first lens 1 can match the vision of the target object.

[0144] In this embodiment of the application, the knob 6 can be rotated, which drives the connected slider 5 to move up and down. The slider 5 can drive the first bracket 2 to make the first lens 1 move in a straight line relative to other lenses or the display screen.

[0145] It should be emphasized that in the entire optical module, the first lens 1 does not rotate at all, but only moves linearly along the axis within the lens barrel 3.

[0146] According to another aspect of the embodiments of this application, a wearable device is also provided, the wearable device including a housing and an optical module as described above, the optical module being disposed in the housing.

[0147] The wearable device is, for example, a VR headset, including VR glasses or a VR helmet, etc., but this application does not impose specific limitations on it.

[0148] In one example, the housing is a lens frame, and the lens frame is provided with two lens frames; the optical module is provided with two, and the two optical modules are disposed in the two lens frames.

[0149] The specific implementation of the wearable device in this application can refer to the above-described embodiments of the optical module. Therefore, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0150] The above embodiments mainly describe 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. For the sake of brevity, they will not be elaborated here.

[0151] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. An optical module, characterized in that, include: An imaging lens assembly, the imaging lens assembly including at least a first lens (1), the first lens (1) being a chamfered lens; The first support (2) is located inside the first support (2). The first support (2) includes a frame and at least two support pillars (201) located on one side of the frame. The lens barrel (3) has the first support (2) movably disposed inside the lens barrel (3); A screen bracket (4) is located at one end of the lens barrel (3). The screen bracket (4) has an assembly part (401) on the side away from the lens barrel (3). The assembly part (401) includes multiple assembly segments (4011). The multiple assembly segments (4011) are spaced apart and form a ring structure. The outer wall of the assembly segment (4011) is provided with a first thread (403). A sliding member (5) is provided on the assembly part (401). The sliding member (5) is connected to the first bracket (2). The sliding member (5) includes a limiting shaft (501) and a hollow area (502) arranged around the limiting shaft (501). The hollow area (502) and the assembly section (4011) are arranged in a one-to-one correspondence. The assembly section (4011) extends out from the corresponding hollow area (502). The support column (201) passes through the lens barrel (3) and is connected to the sliding member (5). A knob (6) includes a connecting hole (602). The knob (6) is sleeved on the outside of the assembly part (401). The limiting shaft (501) is inserted into the connecting hole (602). The inner wall of the knob (6) is provided with a second thread (601) that is compatible with the first thread (403). When focusing, rotating the knob (6) causes the rotational motion of the second thread (601) and the first thread (403) to drive the slider (5) to move the first bracket (2) along the axial direction of the lens barrel (3), so that the first lens (1) can match the vision of the target object.

2. The optical module according to claim 1, characterized in that, The frame has a lens mounting area (202), and the first lens (1) is fixedly mounted in the lens mounting area (202).

3. The optical module according to claim 2, characterized in that, The support column (201) is configured as three, and the three support columns (201) are evenly distributed along the periphery of the frame.

4. The optical module according to claim 2, characterized in that, The edge of the slider (5) is provided with a foot (503), and the foot (503) is provided in a one-to-one correspondence with the support column (201). The support column (201) passes through the lens barrel (3) and is connected to the corresponding foot (503) so that the slider (5) is connected to the first bracket (2) as a whole.

5. The optical module according to claim 4, characterized in that, The support leg (503) is provided with an assembly hole, and one end of the support column (201) passes through the assembly hole and is fixed on the back of the support leg (503) by a retaining spring (7).

6. The optical module according to claim 1, characterized in that, Each of the hollowed-out areas (502) forms a circular clearance area, and any two adjacent hollowed-out areas (502) are separated by a separator (504); One end of the limiting shaft (501) is connected to each of the separators (504) and is located at the center of the avoidance area.

7. The optical module according to claim 1, characterized in that, The screen bracket (4) includes a support body and an electronic control unit (402) connected to the support body. The electrical control unit (402) is used to form an electrical connection with the display screen housed in the support body.

8. The optical module according to any one of claims 1-7, characterized in that, The imaging lens group also includes a second lens (8), which is configured as a chamfered lens, and the chamfered side of the second lens (8) corresponds to the chamfered side of the first lens (1); The second lens (8) is located at one end of the lens barrel (3) away from the screen bracket (4).

9. The optical module according to claim 8, characterized in that, The second lens (8) is bonded and fixed inside the second bracket (9). The second bracket (9) has a side that is adapted to the cut edge of the second lens (8). The second bracket (9) is fixedly disposed at one end of the lens barrel (3) away from the screen bracket (4).

10. The optical module according to claim 8, characterized in that, The imaging lens assembly also includes a third lens (10), which is disposed inside the lens barrel (3) and located on one side of the screen bracket (4).

11. The optical module according to claim 10, characterized in that, The first lens (1), the second lens (8) and the third lens (10) are arranged at intervals along the axial direction of the lens barrel (3), and the first lens (1), the second lens (8) and the third lens (10) are located on the same optical axis.

12. The optical module according to claim 1, characterized in that, The limiting shaft (501) includes a shaft body and a snap-fit ​​member (5011) disposed on the outer wall of the shaft body. The shaft is a hollow structure, and the end of the shaft away from the hollow area (502) is provided with two opposing U-shaped grooves (5012). When the shaft is inserted into the connecting hole (602), the U-shaped groove (5012) can cause the shaft to undergo elastic deformation so that the snap-fit ​​(5011) enters the connecting hole (602). After the shaft is inserted into the connecting hole (602), the snap-fit ​​member (5011) is used to stop the shaft from dislodging from the connecting hole (602).

13. The optical module according to claim 1, characterized in that, The outer wall of the knob (6) is provided with an anti-slip structure (603).

14. A wearable device, characterized in that, include: case; as well as The optical module as described in any one of claims 1-13, wherein the optical module is disposed in the housing.

15. The wearable device according to claim 14, characterized in that, The housing is a lens frame, and two lens frames are provided on the lens frame. There are two optical modules, and the two optical modules are disposed in the two lens frames.

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