Head-mounted display devices

Abstract

This invention discloses a head-mounted display device, relating to the field of smart wearable technology. The head-mounted display device includes a housing, two optical modules, and an adjustment assembly. A receiving cavity is formed within the housing. The two optical modules are spaced apart in the left-right direction and movably mounted within the receiving cavity. Each optical module includes a lens barrel, and each lens barrel has a lens. The adjustment assembly extends laterally on the side of the two lens barrels away from the lenses. The adjustment assembly includes an adjustment body, a clutch structure, and a first and second mating structures corresponding to each optical module and arranged in the front-back direction. When adjusting the interpupillary distance, the clutch structure controls the first mating structure to engage with the adjustment body and the second mating structure to disengage from the adjustment body. When adjusting the focal length, the clutch structure controls the second mating structure to engage with the adjustment body and the first mating structure to disengage from the adjustment body. The technical solution provided by this invention simultaneously achieves the adjustment of both the interpupillary distance and the focal length of the head-mounted display device.

Description

Technical Field

[0001] This invention relates to the field of smart wearable technology, and in particular to a head-mounted display device. Background Technology

[0002] Head-mounted displays, as an important carrier of extended reality (XR) technologies such as virtual reality (VR) and augmented reality (AR), are receiving increasing attention and being applied in various fields. Head-mounted displays include AR devices and VR devices, but their widespread adoption and user experience are severely limited by the physiological differences of users, especially differences in interpupillary distance and visual acuity.

[0003] Specifically, interpupillary distance varies significantly from person to person, typically ranging from 52 to 78 mm. Individual visual acuity also varies considerably, with conditions such as myopia, hyperopia, and astigmatism present. If the optical center of the device is not aligned with the center of the user's pupil, or if the focal length is unsuitable, it can lead to blurred or distorted images, causing visual fatigue, dizziness, nausea, and other discomfort, severely impacting the wearing experience and the applicability of head-mounted display devices. Summary of the Invention

[0004] The main objective of this invention is to provide a head-mounted display device that simultaneously adjusts the interpupillary distance and focal length.

[0005] To achieve the above objectives, the head-mounted display device proposed in this embodiment of the invention includes:

[0006] The outer shell has a cavity inside it;

[0007] Two optical modules are spaced apart and movably mounted in the receiving cavity along a left-right direction. Each optical module includes a lens barrel, and each lens barrel is provided with a lens.

[0008] An adjustment assembly extends laterally on the side of the two lens barrels opposite to the lens. The adjustment assembly includes an adjustment body movably disposed in the receiving cavity, a clutch structure disposed in the receiving cavity, and a first mating structure and a second mating structure corresponding to each optical module. The first mating structure and the second mating structure are arranged in the front-back direction.

[0009] When the interpupillary distance of the two optical modules is adjusted, the clutch structure controls the first mating structure and the second mating structure to move in the front-to-back direction, the first mating structure engages with the adjustment body, and the second mating structure separates from the adjustment body;

[0010] When the focal length of the optical module is adjusted, the clutch structure controls the first mating structure and the second mating structure to move in the front-to-back direction, the second mating structure engages with the adjustment body, and the first mating structure separates from the adjustment body.

[0011] In one embodiment, the adjustment body is configured as an elastic strip, which includes non-deformable segments at both ends and a deformable segment between the two non-deformable segments. The two non-deformable segments are used to cooperate with the two first mating structures or the two second mating structures. The deformable segment deforms to drive the two non-deformable segments to move toward each other or away from each other, thereby adjusting the interpupillary distance or the focal length.

[0012] In one embodiment, the first mating structure includes a first toothed post, one end of which is provided with a first meshing tooth, and both of the non-deformable sections are provided with racks; when the interpupillary distance is adjusted, the first meshing tooth meshes with the racks, and the rotation of the first meshing tooth relative to the racks is restricted.

[0013] In one embodiment, the optical module is provided with internal teeth, and the first meshing tooth meshes with the internal teeth to restrict the rotation of the first meshing tooth relative to the rack, and the first meshing tooth can move relative to the internal teeth in the front-back direction.

[0014] In one embodiment, the optical module further includes an optical housing, the lens barrel is connected to the optical housing via the first toothed post, the optical housing is provided with a sliding groove extending in the left-right direction and a first connecting hole extending in the front-back direction, the sliding groove and the first connecting hole are connected, and the first connecting hole has the internal teeth formed on the side of the sliding groove opposite to the lens barrel.

[0015] The two ends of the elastic strip extend into the two sliding grooves respectively and can slide relative to the sliding grooves; the first toothed post extends into the first connecting hole.

[0016] When the interpupillary distance is adjusted, the clutch structure controls part of the first meshing tooth to mesh with the inner tooth and part to mesh with the rack, so that the deformable segment deforms and drives the two non-deformable segments to move in the left and right direction, thereby causing the two optical modules to move closer or further apart in the left and right direction.

[0017] In one embodiment, the second mating structure includes a second toothed post, which is loosely fitted onto the first toothed post. The second toothed post is provided with a second meshing tooth and an external thread. The lens barrel is provided with an internal thread, and the external thread is threadedly connected to the internal thread.

[0018] When adjusting the interpupillary distance, the clutch structure controls the first meshing tooth to mesh with the inner tooth, and the second meshing tooth to mesh with the rack, so that the deformable section deforms and drives the two non-deformable sections to move in the left-right direction, and drives the second tooth column to rotate relative to the first tooth column, so that the inner thread rotates relative to the outer thread, and so that the lens barrel moves relative to the optical housing in the front-back direction.

[0019] In one embodiment, the first tooth post is further provided with a first optical axis segment for the second tooth post to be fitted on. The end of the first optical axis segment away from the first meshing tooth is provided with a fixing hole, and a fixing pin is fixed in the fixing hole to restrict the axial movement of the second tooth post relative to the first optical axis segment.

[0020] In one embodiment, the non-deformable segment is provided with a limiting groove, one wall of the limiting groove is provided with the rack, and two opposing groove walls adjacent to the rack are used to stop the second meshing teeth; and / or

[0021] The second tooth column is provided with a second optical axis section between the second meshing tooth and the external thread, and the second optical axis section is provided with a first step; the optical housing is provided with a limiting hole that communicates with the first connecting hole, and a limiting pin extends into the limiting hole;

[0022] When the elastic strip engages with the first toothed post, the limiting pin abuts against the first step; when the elastic strip engages with the second toothed post, the limiting pin abuts against the end of the external thread facing the second optical axis segment; and / or

[0023] The optical housing includes a base, a sleeve, and a connecting tube connecting the base and the sleeve. The first connecting hole passes through the base, the connecting tube, and the sleeve. The lens barrel is disposed inside the sleeve and can move relative to the sleeve in the front-back direction.

[0024] The connecting cylinder is provided with a second step. When the elastic strip engages with the first toothed post, the second step is used to abut against the end of the second meshing tooth facing the external thread.

[0025] In one embodiment, the clutch structure includes a first magnetic element and a second magnetic element disposed opposite to each other, at least one of the first magnetic element and the second magnetic element being an electromagnet, the first magnetic element being disposed on the first toothed post, and the second magnetic element being disposed on the optical housing;

[0026] When the first magnetic element and the second magnetic element have the same polarity, the first meshing tooth moves away from the second magnetic element, so that part of the first meshing tooth meshes with the internal tooth and part meshes with the rack.

[0027] When the first magnetic element and the second magnetic element have opposite polarities, the first meshing tooth meshes with the internal tooth, and the second meshing tooth meshes with the rack.

[0028] In one embodiment, the adjustment component further includes a drive structure for driving the deformation of the deformable segment and controlling the magnitude of the deformation of the deformable segment to control the adjustment magnitude of the interpupillary distance or the focal length.

[0029] In one embodiment, the driving structure includes a third magnetic element and a fourth magnetic element disposed opposite to each other, at least one of the third magnetic element and the fourth magnetic element being an electromagnet, the third magnetic element being disposed in the deformable section, and the fourth magnetic element being disposed in the receiving cavity; when the polarity of the third magnetic element and the fourth magnetic element is the same, the deformable section deforms in a direction away from the fourth magnetic element.

[0030] In one embodiment, the housing is provided with a touch area, and a touch circuit board is installed in the receiving cavity opposite to the touch area. The touch circuit board is electrically connected to the third magnetic element or the fourth magnetic element.

[0031] In one embodiment, a fixed seat is installed in the receiving cavity. The fixed seat includes a seat body and a seat bracket fixed on the seat body. Both optical modules are movably installed on the seat body and located on opposite sides of the seat bracket. Positioning grooves are formed at opposite ends of the seat bracket. The two ends of the elastic strip extend into the sliding groove through the positioning grooves.

[0032] In one embodiment, the support bracket has two opposing support arms at both ends, each support arm has a positioning hole, and a rotating cylinder is provided between the two support arms. A connecting pin passes through the two positioning holes and the rotating cylinder so that the rotating cylinder can rotate relative to the support arms. The positioning groove is formed between the rotating cylinder and the two support arms.

[0033] The technical solution of this invention involves a housing, two optical modules, and an adjustment assembly within a head-mounted display device. The housing contains a receiving cavity. The two optical modules are spaced apart and movably mounted within the receiving cavity. Each optical module includes a lens barrel, and each lens barrel has a lens. The adjustment assembly extends laterally to the side of the two lens barrels away from the lenses. The adjustment assembly includes an adjustment body movably disposed within the receiving cavity, a clutch structure disposed within the receiving cavity, and a first mating structure and a second mating structure corresponding to each optical module. The first and second mating structures are arranged in a front-back direction. When adjusting the interpupillary distance of the two optical modules, the clutch structure controls the first and second mating structures to move in the front-back direction, so that the first mating structure engages with the adjustment body and the second mating structure disengages from the adjustment body. This movement of the adjustment body causes the two lens barrels to move in the left-right direction. When adjusting the focal length of the optical modules, the clutch structure controls the first and second mating structures to move in the front-back direction, so that the second mating structure engages with the adjustment body and the first mating structure disengages from the adjustment body. This movement of the adjustment body causes the lens barrels to move in the front-back direction. Thus, this invention achieves both interpupillary distance (IPD) and focal length adjustment through a single adjustment component, avoiding the need for two independent adjustment structures. This simplifies the structure and contributes to the lightweight design of the head-mounted display device. Furthermore, by using a clutch mechanism to switch the objects that the adjustment component engages with, different engaging objects can achieve different movement trajectories. This allows the adjustment component to adjust IPD when engaged with the first engaging structure and adjust focal length when engaged with the second engaging structure, separating IPD and focal length adjustments and preventing interference between them. Therefore, this invention simultaneously achieves IPD and focal length adjustment for the head-mounted display device, ensuring wearing comfort and effectiveness for different users and expanding the applicability of the head-mounted display device. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is an exploded structural diagram of an embodiment of the head-mounted display device provided by the present invention;

[0036] Figure 2 for Figure 1 A schematic diagram of the cooperative structure of one embodiment of the two optical modules and the adjustment component;

[0037] Figure 3 for Figure 2 An exploded view of part of the structure;

[0038] Figure 4 for Figure 3 A schematic diagram of the structure of an embodiment of the elastic strip;

[0039] Figure 5 for Figure 3 An exploded view of an embodiment of the optical module in the diagram;

[0040] Figure 6 for Figure 5 Enlarged structural diagram of the first toothed column, the second toothed column, and the fixing pin;

[0041] Figure 7 for Figure 6 A cross-sectional view of an embodiment of the structural combination in the image;

[0042] Figure 8 for Figure 5 A partial enlarged view of one embodiment of the base;

[0043] Figure 9 for Figure 3 A cross-sectional view of an embodiment of the optical module, in which the elastic strip engages with the first toothed post;

[0044] Figure 10 for Figure 9 Enlarged view of a portion of the structure;

[0045] Figure 11 for Figure 3 A cross-sectional view of an embodiment of the optical module, in which the elastic strip engages with the second toothed post;

[0046] Figure 12 for Figure 11 Enlarged view of a portion of the structure;

[0047] Figure 13 for Figure 3 An exploded structural diagram of one embodiment of the fixed base.

[0048] Explanation of icon numbers:

[0049] 100. Outer casing; 101. Touch circuit board; 102. Main circuit board; 103. Optical circuit board; 104. Connecting circuit board; 110. Receiving cavity; 120. Touch area; 131. Front shell; 132. Rear shell;

[0050] 200. Optical module; 201. Base; 202. Sleeve; 203. Connecting sleeve; 204. Second step;

[0051] 210. Optical housing; 211. Sliding groove; 212. First connecting hole; 213. Internal teeth; 214. Slide plate; 215. Sliding hole; 216. Slide rod; 217. Limiting hole; 218. Limiting pin;

[0052] 220. Lens barrel; 221. Internal thread; 222. Body part; 223. Connecting part;

[0053] 300. Adjustment component; 301. Adjustment body; 302. Elastic strip; 310. Non-deformable section; 311. Rack; 312. Limiting groove; 320. Deformable section;

[0054] 400. Clutch structure; 410. First magnetic component; 420. Second magnetic component;

[0055] 500, First mating structure; 501, First tooth post; 510, First meshing tooth; 520, First optical shaft section; 521, Fixing hole; 530, Fixing pin;

[0056] 600, Second mating structure; 601, Second tooth post; 610, Second meshing tooth; 620, External thread; 630, Second optical shaft section; 631, First step;

[0057] 700. Drive structure; 710. Third magnetic component; 720. Fourth magnetic component;

[0058] 800, fixed base; 810, base body; 820, base bracket; 821, positioning groove; 830, support arm; 831, positioning hole; 840, rotating cylinder; 850, connecting pin.

[0059] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0061] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0062] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0063] Head-mounted displays, as an important carrier of extended reality (XR) technologies such as virtual reality (VR) and augmented reality (AR), are receiving increasing attention and being applied in various fields. Head-mounted displays include AR devices and VR devices, but their widespread adoption and user experience are severely limited by the physiological differences of users, especially differences in interpupillary distance and visual acuity.

[0064] Specifically, interpupillary distance varies significantly from person to person, typically ranging from 52 to 78 mm, and the average interpupillary distance also differs between men and women. Individual visual acuity also varies significantly, including conditions such as myopia, hyperopia, and astigmatism. If the optical center of the device is not aligned with the center of the user's pupil, or if the focal length is unsuitable, it can lead to blurred or distorted images, causing visual fatigue, dizziness, nausea, and other discomfort, severely impacting the wearing experience and the applicability of head-mounted display devices.

[0065] This invention proposes a head-mounted display device.

[0066] Please see Figures 1 to 3 In one embodiment of the present invention, the head-mounted display device includes a housing 100, two optical modules 200, and an adjustment assembly 300. A receiving cavity 110 is formed within the housing 100. The two optical modules 200 are spaced apart in the left-right direction and movably mounted within the receiving cavity 110. Each optical module 200 includes a lens barrel 220, and each lens barrel 220 is provided with a lens. The adjustment assembly 300 extends laterally on the side of the two lens barrels 220 away from the lenses. The adjustment assembly 300 includes an adjustment body 301 movably disposed within the receiving cavity 110, and a clutch structure 400 disposed within the receiving cavity 110 (e.g., [missing information]). Figure 10 , Figure 12 As shown), and each optical module 200 is correspondingly provided with a first mating structure 500 and a second mating structure 600 (as shown). Figure 5As shown in the figure, the first mating structure 500 and the second mating structure 600 are arranged in the front-to-back direction.

[0067] Understandably, a head-mounted display device includes a front frame and temples. The temples are used to connect with the ears to achieve wearing of the head-mounted display device. In some embodiments, the temples may also take the form of straps, adjustment straps, or other structures. The front frame integrates core display components, etc. In one embodiment, the front frame has two optical modules 200, which are spaced apart in the left-right direction within a receiving cavity. The two optical modules 200 are used to provide images to the user's left and right eyes, respectively.

[0068] Please see Figure 1 In one embodiment, the outer casing 100 includes a detachable front casing 131 and a rear casing 132, with a receiving cavity 110 formed between the front casing 131 and the rear casing 132, providing space for the installation of the two optical modules 200. In one embodiment, the front casing 131 and the rear casing 132 are connected by a screw fastening structure; of course, in other embodiments, they can also be connected by snap-fit ​​or other means.

[0069] Understandably, in order to adjust the distance between the two optical modules 200 and the distance between the optical modules 200 and the human eye, both optical modules 200 are movably mounted within the receiving cavity 110. The head-mounted display device can be worn in the forward-backward, vertical, and horizontal directions. The adjustment of the distance between the two optical modules 200, i.e., the interpupillary distance, is performed in the horizontal direction; the adjustment of the distance between the optical modules 200 and the human eye is performed in the forward-backward direction.

[0070] Each of the two optical modules 200 includes a lens barrel 220, and each lens barrel 220 has a lens. Understandably, the lens is oriented towards the user's eye so that the user can obtain the image presented through the lens. An adjustment assembly 300 extends laterally on the side of the two lens barrels 220 opposite to the lens, that is, the adjustment assembly 300 extends in the left-right direction to simultaneously control the movement of both lens barrels 220. Understandably, in the front-back direction, the lens is located behind the receiving cavity 110 to face the user's eye; the adjustment assembly 300 is located in front of the receiving cavity 110 to avoid obstructing the lens.

[0071] Please see Figure 3 , Figure 5 , Figure 10 as well as Figure 12The adjustment assembly 300 includes an adjustment body 301, a clutch structure 400, a first mating structure 500, and a second mating structure 600. The adjustment body 301 is movably installed in the receiving cavity 110. Both optical modules 200 are provided with a first mating structure 500 and a second mating structure 600, which are arranged in the front-back direction. The clutch structure 400 is installed in the receiving cavity 110 and is used to control the first mating structure 500 or the second mating structure 600 to engage with the adjustment body 301.

[0072] When adjusting the interpupillary distance of the two optical modules 200, the clutch structure 400 controls the first mating structure 500 and the second mating structure 600 to move in the front-back direction, so that the first mating structure 500 engages with the adjustment body 301 and the second mating structure 600 disengages from the adjustment body 301, so that when the adjustment body 301 moves, it drives the two lens barrels 220 to move in the left-right direction; when adjusting the focal length of the optical module, the clutch structure 400 controls the first mating structure 500 and the second mating structure 600 to move in the front-back direction, so that the second mating structure 600 engages with the adjustment body 301 and the first mating structure 500 disengages from the adjustment body 301, so that when the adjustment body 301 moves, it drives the lens barrels 220 to move in the front-back direction.

[0073] Understandably, the first mating structure 500 and the second mating structure 600 are arranged in the front-to-back direction, and the clutch structure 400 can control the movement of the first mating structure 500 and the second mating structure 600 in the front-to-back direction. In the embodiment shown in the figures of this invention, the first mating structure 500 and the second mating structure 600 are disposed within the receiving cavity 110, and the adjusting body 301 can drive the movement of the optical module 200 by moving the first mating structure 500 and the second mating structure 600.

[0074] When adjusting the interpupillary distance, the clutch mechanism 400 engages the first engaging structure 500 with the adjusting body 301, while the second engaging structure 600 is not engaged with the adjusting body 301. This allows the adjusting body 301 to move, causing the first engaging structure 500 to move, which in turn moves the two lens barrels 220 closer to or further apart in the left-right direction, thus adjusting the interpupillary distance. When adjusting the focal length, the clutch mechanism 400 engages the second engaging structure 600 with the adjusting body 301, while the first engaging structure 500 is not engaged. This allows the adjusting body 301 to move, causing the second engaging structure 600 to move, which in turn moves the lens barrels 220 closer to or further away from the eye in the front-back direction, thus adjusting the focal length.

[0075] The technical solution of this invention involves a housing 100, two optical modules 200, and an adjustment assembly 300 within a head-mounted display device. The housing 100 contains a receiving cavity 110. The two optical modules 200 are spaced apart in the left-right direction and movably mounted within the receiving cavity 110. Each optical module 200 includes a lens barrel 220, and each lens barrel 220 has a lens. The adjustment assembly 300 extends laterally on the side of the two lens barrels 220 away from the lenses. The adjustment assembly 300 includes an adjustment body 301 movably disposed within the receiving cavity 110, a clutch structure 400 disposed within the receiving cavity 110, and a first mating structure 500 and a second mating structure 600 corresponding to each optical module 200. The two optical modules 200 are arranged in a front-to-back direction. When adjusting the interpupillary distance (IPD) of the two optical modules 200, the clutch structure 400 controls the first mating structure 500 and the second mating structure 600 to move in the front-to-back direction, so that the first mating structure 500 engages with the adjustment body 301 and the second mating structure 600 disengages from the adjustment body 301. This allows the two lens barrels 220 to move in the left-to-right direction when the adjustment body 301 moves. When adjusting the focal length of the optical module, the clutch structure 400 controls the first mating structure 500 and the second mating structure 600 to move in the front-to-back direction, so that the second mating structure 600 engages with the adjustment body 301 and the first mating structure 500 disengages from the adjustment body 301. This allows the lens barrels 220 to move in the front-to-back direction when the adjustment body 301 moves. Thus, this invention achieves both interpupillary distance and focal length adjustment with a single adjustment component 300, avoiding the need for two independent adjustment structures to adjust the interpupillary distance and focal length separately. This simplifies the structure and contributes to the lightweight design of the head-mounted display device. Simultaneously, by setting the clutch structure 400 to switch the objects cooperating with the adjustment component 300, different cooperating objects can achieve different movement trajectories. This allows the adjustment component 300 to adjust interpupillary distance (IPD) when cooperating with the first cooperating structure 500, and to adjust focal length when cooperating with the second cooperating structure 600. This separates IPD and focal length adjustments, avoiding interference between them. Thus, this invention simultaneously achieves IPD and focal length adjustment for the head-mounted display device, ensuring wearing comfort and effectiveness for different users and expanding the applicability of the head-mounted display device.

[0076] Please see Figure 4 In an embodiment of the present invention, the adjusting body 301 is configured as an elastic strip 302. The elastic strip 302 includes non-deformable segments 310 at both ends and a deformable segment 320 between the two non-deformable segments 310. The two non-deformable segments 310 are used to cooperate with the two first mating structures 500 or the two second mating structures 600. The deformable segment 320 deforms to drive the two non-deformable segments 310 to move toward each other or away from each other, thereby adjusting the interpupillary distance or focal length.

[0077] Understandably, in the embodiment shown in the figures of this invention, the adjusting body 301 is configured as an elastic strip 302, which extends in the left-right direction. The two ends of the elastic strip 302 along its length are non-deformable segments 310, and the space between the two non-deformable segments 310 is a deformable segment 320. The deformable segment 320 and the two non-deformable segments 310 are made of different materials. In one embodiment, the deformable segment 320 and the two non-deformable segments 310 are an integral structure, which can be formed by processes such as two-color injection molding. Of course, in other embodiments, the deformable segment 320 and the two non-deformable segments 310 can also be separate structures, connected by snap-fitting, bonding, or other methods. The deformable segment 320 can be made of materials such as silicone or rubber; the specific materials of the deformable segment 320 and the non-deformable segment 310 are not limited here.

[0078] In one embodiment, when the deformable segment 320 is not deformed, it has a straight structure; when it is deformed, it has an arched structure. In the vertical direction, the deformable segment 320 can deform upwards or downwards. In the embodiment shown in the figures of this invention, the deformable segment 320 deforms upwards.

[0079] It should be noted that when the deformable segment 320 changes from being undeformed to deforming and arching, it will inevitably cause the two non-deformable segments 310 to move closer to each other. The distance between the two non-deformable segments 310 is determined by the degree of deformation of the deformable segment 320. The two non-deformable segments 310 are used to connect with the two first mating structures 500 or the two second mating structures 600, so that when the deformable segment 320 deforms, the two first mating structures 500 or the two second mating structures 600 also move accordingly, thereby realizing the adjustment of interpupillary distance and focal length. It can be understood that when the deformable segment 320 is in an undeformed state, the interpupillary distance is at its maximum value; the focal length is at its minimum or maximum value.

[0080] Please see Figures 3 to 6 In an embodiment of the present invention, the first mating structure 500 includes a first toothed post 501, one end of which is provided with a first meshing tooth 510, and both non-deformable sections 310 are provided with racks 311; when the interpupillary distance is adjusted, the first meshing tooth 510 meshes with the rack 311, and the rotation of the first meshing tooth 510 relative to the rack 311 is restricted.

[0081] Understandably, in the embodiment shown in the figures of this invention, the first toothed column 501 is connected to the optical module 200 so that the optical module 200 can move along with the movement of the first toothed column 501. The axial direction of the first toothed column 501 is the front-rear direction, and one end of the first toothed column 501 in the axial direction is provided with a first meshing tooth 510, that is, the end of the first toothed column 501 near the front is provided with a first meshing tooth 510. When it is necessary to adjust the interpupillary distance, the clutch structure 400 controls the first toothed column 501 to move in the front-rear direction so that the first meshing tooth 510 can mesh with the rack 311. Understandably, when the deformable section 320 deforms, the two non-deformable sections 310 move toward each other, thereby causing the two racks 311 on the two non-deformable sections 310 to move toward each other in the left-right direction. Simultaneously, the rack 311 also engages with the first meshing tooth 510. To prevent the first meshing tooth 510 from rotating in place as it moves with the rack 311, thus maintaining the distance between the two optical modules 200, the rotation of the first meshing tooth 510 relative to the rack 311 needs to be restricted. Therefore, when the two racks 311 move towards each other, the two first meshing teeth 510 also move towards each other, thereby causing the two optical modules 200 to move towards each other, thus achieving interpupillary distance adjustment.

[0082] Please see Figure 5 and Figure 8 In an embodiment of the present invention, the optical module 200 is provided with an internal tooth 213, and the first meshing tooth 510 meshes with the internal tooth 213 so that the rotation of the first meshing tooth 510 relative to the rack 311 is restricted, and the first meshing tooth 510 can move relative to the internal tooth 213 in the front-back direction.

[0083] In the embodiment shown in the figures of this invention, the optical module 200 is provided with internal teeth 213, the axial direction of which is aligned with the axial direction of the first meshing tooth 510. The first meshing tooth 510 meshes with the internal teeth 213, thereby restricting the rotation of the first meshing tooth 510 relative to the rack 311, and simultaneously connecting the first tooth post 501 to the optical module 200. Furthermore, the first meshing tooth 510 can also move relative to the internal teeth 213 in the front-back direction, thereby enabling the clutch structure 400 to control the first engagement structure 500 in the front-back direction. It can be understood that when adjusting the interpupillary distance, in the front-back direction, part of the first meshing tooth 510 meshes with the rack 311, and part meshes with the internal teeth 213.

[0084] In an embodiment of the present invention, the optical module 200 includes an optical housing 210, and a lens barrel 220 is connected to the optical housing 210 via a first toothed post 501. The optical housing 210 is provided with a sliding groove 211 extending in the left-right direction and a first connecting hole 212 extending in the front-back direction. The sliding groove 211 and the first connecting hole 212 are connected. The first connecting hole 212 has an internal tooth 213 formed on the side of the sliding groove 211 away from the lens barrel 220. The two ends of the elastic strip 302 extend into the two sliding grooves 211 respectively and can slide relative to the sliding grooves 211. The first toothed post 501 extends into the first connecting hole 212.

[0085] When adjusting the interpupillary distance, the clutch structure 400 controls part of the first meshing tooth 510 to mesh with the inner tooth 213 and part to mesh with the rack 311, so that the deformable section 320 deforms and drives the two non-deformable sections 310 to move in the left and right directions, and drives the two optical modules 200 to move closer or further apart in the left and right directions.

[0086] Please see Figure 5 The optical module 200 includes an optical housing 210, and a lens barrel 220 is connected to the optical housing 210 via a first toothed post 501. It is understood that the lens barrel 220 includes components such as optical imaging assemblies, and the optical housing 210 provides mounting and protection for the lens barrel 220. It is understood that in this invention, the lens barrel 220 is movably mounted on the optical housing 210 to achieve focal length adjustment. The movable connection between the lens barrel 220 and the optical housing 210 is described in detail below.

[0087] Please see Figure 5 and Figure 8 The optical housing 210 is provided with a sliding groove 211 and a first connecting hole 212 (e.g., Figure 10 , Figure 12 As shown in the diagram, the sliding groove 211 extends in the left-right direction, and the first connecting hole 212 extends in the front-back direction. The sliding groove 211 and the first connecting hole 212 are connected. The first connecting hole 212 has internal teeth 213 formed on the side of the sliding groove 211 opposite to the lens barrel 220. It can be understood that the first connecting hole 212 has a certain length in the front-back direction. The sliding groove 211 divides the first connecting hole 212 into a front part and a rear part, where the front part has internal teeth 213, and the rear part is set as a light aperture.

[0088] Along the left-right direction, both ends of the elastic strip 302 are respectively inserted into the sliding grooves 211 of the two optical modules 200, thereby connecting the elastic strip 302 with the optical housing 210. It can be understood that the elastic strip 302 can slide relative to the sliding grooves 211, so that when the deformable section 320 switches to the deformable state, the two non-deformable sections 310 can move towards each other. After the rear end of the first toothed post 501 is connected to the lens barrel 220, along the front-back direction, the front end of the first toothed post 501 is inserted into the first connecting hole 212, causing the first meshing tooth 510 to mesh with the internal tooth 213.

[0089] Understandably, when the elastic strip 302 is connected to the optical housing 210, that is, when the two non-deformable sections 310 extend into the two sliding grooves 211, the rack 311 and the inner teeth 213 are arranged in the front-to-back direction. Specifically, the inner teeth 213 are located in front of the rack 311. Figure 12 As shown, along the front-to-back direction, the axial length of the internal tooth 213 is the same as the axial length of the first meshing tooth 510. When the first meshing tooth 510 is fully engaged with the internal tooth 213 and not engaged with the rack 311, the first tooth post 501 and the elastic strip 302 have no engagement relationship. When part of the first meshing tooth 510 is engaged with the rack 311 and part is engaged with the internal tooth 213, the first tooth post 501 and the elastic strip 302 have an engagement relationship.

[0090] When assembling the head-mounted display device, the first toothed post 501 is inserted into the first connecting hole 212, and all the first meshing teeth 510 are engaged with the inner teeth 213. At this time, the elastic strip 302 is in an undeformed state, and the distance between the two optical modules 200 is at its maximum, i.e., the interpupillary distance is at its maximum. When the interpupillary distance needs to be adjusted, the clutch mechanism 400 is activated, driving the first toothed post 501 to move backward, so that part of the first meshing teeth 510 engages with the inner teeth 213 of the optical housing 210, and part of the first meshing teeth 510 engages with the rack 311 of the elastic strip 302. In this way, while realizing the engagement of the first toothed post 501 with the elastic strip 302, the connection between the first toothed post 501 and the optical housing 210 is also realized.

[0091] Thus, when adjusting the interpupillary distance, such as Figure 9 and Figure 10 As shown, the deformable segment 320 of the elastic strip 302 deforms, thereby causing the two non-deformable segments 310 of the elastic strip 302 to move towards each other in the left-right direction. The rack 311 moves left and right along with the left-right movement of the non-deformable segments 310. The first meshing tooth 510 that meshes with the rack 311 is partially meshed with the internal tooth 213, so the first meshing tooth 510 cannot rotate with the movement of the rack 311. As a result, the first meshing tooth 510 drives the optical module 200 to move left and right, thereby realizing the interpupillary distance adjustment.

[0092] Of course, in other embodiments, the adjusting body 301 may also include a gear and two toothed plates. The two toothed plates are arranged opposite each other and mesh with opposite sides of the gear. The rotation of the gear can drive the two toothed plates to move in a direction closer to or further away from each other. The two toothed plates respectively cooperate with the first mating structure 500 or the second mating structure 600 to adjust the interpupillary distance or focal length. In other embodiments, the adjusting body 301 may also be a belt structure, and the first mating structure 500 may be a pulley structure.

[0093] Please see Figure 2 , Figure 3 and Figure 5 In an embodiment of the present invention, the optical module 200 further includes a slide plate 214, the optical housing 210 is fixed to the slide plate 214, the slide plate 214 is provided with a sliding hole 215, and the slide rod 216 passes through the sliding hole 215 and extends out from both ends of the sliding hole 215 to be fixed in the receiving cavity 110.

[0094] Understandably, in one embodiment, the two optical modules 200 are slidably mounted in the receiving cavity 110. Specifically, the optical module 200 further includes a slide plate 214, and the optical housing 210 is fixed to the slide plate 214. In one embodiment, the optical housing 210 is fixed to the slide plate 214 by a bolt locking structure or a snap-fit ​​structure. The slide plate 214 is provided with a sliding hole 215, which extends through the slide plate 214 in a left-right direction. A slide rod 216 passes through the sliding hole 215 and extends out from both ends of the sliding hole 215, that is, both ends of the slide rod 216 protrude from both ends of the slide plate 214, and the protruding ends of the slide rod 216 are fixed in the receiving cavity 110. In one embodiment, the slide rod 216 is fixed in the receiving cavity 110 by a fixing buckle and bolt structure. In one embodiment, sliding holes 215 are provided on opposite sides of the slide plate 214 along the front-back direction. Correspondingly, two sliding rods 216 extend into the two sliding holes 215 to improve the installation stability and sliding stability of the optical module 200.

[0095] Of course, in other embodiments, the two optical modules 200 can also be tumbled onto the receiving cavity 110. Specifically, a tumbler groove is provided in the receiving cavity 110, the tumbler groove has an opening, and a plurality of balls are installed in the tumbler groove. The optical module 200 is mounted on the tumbler groove and can contact the balls through the opening, thereby enabling the optical module 200 to tumble relative to the receiving cavity 110.

[0096] Please see Figures 5 to 7 In an embodiment of the present invention, the second mating structure 600 includes a second toothed post 601, which is loosely fitted onto the first toothed post 501. The second toothed post 601 is provided with a second meshing tooth 610 and an external thread 620. The lens barrel 220 is provided with an internal thread 221, and the external thread 620 is threadedly connected to the internal thread 221.

[0097] When adjusting the interpupillary distance, the clutch structure 400 controls the first meshing tooth 510 to mesh with the inner tooth 213, and the second meshing tooth 610 to mesh with the rack 311, so that the deformable section 320 deforms and drives the two non-deformable sections 310 to move in the left and right directions, and drives the second tooth post 601 to rotate relative to the first tooth post 501, so that the inner thread 221 rotates relative to the outer thread 621, and so that the lens barrel 220 moves relative to the optical housing 210 in the front and back directions.

[0098] Please see Figure 6 and Figure 7 As can be understood, in the embodiment shown in the figures of this invention, the second mating structure 600 includes a second toothed post 601. Specifically, the second toothed post 601 has a hollow structure, and its two ends along its axial direction are respectively provided with a second meshing tooth 610 and an external thread 620. The axial direction of the second toothed post 601 is consistent with the front-rear direction, wherein the external thread 620 is located closer to the rear for connection with the lens barrel 220; the second meshing tooth 610 is located closer to the front for connection with the elastic strip 302. The hollow design of the second toothed post 601 allows it to be fitted onto the first toothed post 501 and to rotate relative to the first toothed post 501. It can be understood that after the second toothed post 601 is fitted onto the first toothed post 501, at least a portion of the first toothed post 501 must be located outside the second toothed post 601 to achieve the front-rear arrangement of the first toothed post 501 and the second toothed post 601.

[0099] Please see Figure 5 The lens barrel 220 has an internal thread 221, and an external thread 620 is threadedly connected to the internal thread 221. In one embodiment, the lens barrel 220 includes a body portion 222 and a connecting portion 223. The connecting portion 223 protrudes outward relative to the body portion 222, and a second connecting hole is provided in the connecting portion 223, with an internal thread 221 inside the second connecting hole. After the second toothed post 601 is sleeved on the first toothed post 501, the entire assembly is named a toothed post unit. Connecting the toothed post unit to the lens barrel 220 means that the external thread 620 of the second toothed post 601 is screwed into the internal thread 221 of the connecting portion 223 of the lens barrel 220, thereby achieving a movable connection between the toothed post unit and the lens barrel 220. It can be understood that the lens barrel 220 and the second toothed post 601 are connected by threads. As the depth to which the external thread 620 of the second toothed post 601 is screwed into the internal thread 221 varies, the distance between the lens barrel 220 and the human eye varies, thereby allowing for focus adjustment.

[0100] Please see Figure 11 and Figure 12When focus adjustment is required, the clutch structure 400 controls all the first meshing teeth 510 to engage with the internal teeth 213, thereby allowing the second meshing teeth 610 to engage with the rack 311, and enabling the second toothed column 601 to cooperate with the elastic strip 302. When the deformable section 320 deforms, in the left-right direction, the two non-deformable sections 310 move towards each other, thereby causing the two racks 311 to move towards each other, causing the second meshing teeth 610 meshing with the racks 311 to rotate relative to the first toothed column 501. Because the first toothed column 501 engages with the internal teeth 213 of the optical housing 100, the first toothed column 501 cannot move relative to the optical housing 100, thereby preventing the second toothed column 601 from moving in the left-right direction. At this time, the rack 311 moves in the left and right direction, and the second toothed column 601 rotates around the first toothed column 501, so that the lens barrel 220, which is threadedly connected to the external thread 620 of the second toothed column 601, moves in the front and back direction, thereby realizing the adjustment of the focal length.

[0101] Of course, in other embodiments, the first mating structure 500 and the second mating structure 600 can also be arranged side by side in the left-right direction. The first mating structure 500 is a first gear shaft, and the second mating structure 600 includes a fixed shaft and a rotating shaft loosely fitted on the fixed shaft. The two ends of the rotating shaft are respectively provided with teeth and threads, and the threaded part is used to threadedly connect with the lens barrel 220. The clutch structure 400 is connected to the first mating structure 500 and the second mating structure 600 respectively, and can drive both to move in the up-down direction. In one embodiment, when adjusting the interpupillary distance, the clutch structure 400 drives the first mating structure 500 to move upward while driving the second mating structure 600 to move downward, so that the rack 311 on the adjusting body 301 meshes with the first gear shaft. At this time, the first gear shaft is fixed to the optical housing 210 or the lens barrel 220 so that the first gear shaft can move with the left-right movement of the rack 311, but cannot rotate relative to the rack 311. When adjusting the focus, the clutch structure 400 drives the first mating structure 500 to move down, while simultaneously driving the second mating structure 600 to move up, so that the rack 311 on the adjusting body 301 meshes with the teeth.

[0102] Please see Figure 7 In an embodiment of the present invention, the first tooth post 501 is provided with a first optical axis section 520 for the second tooth post 601 to be fitted. The first optical axis section 520 is provided with a fixing hole 521 at one end away from the first meshing tooth 510. The fixing pin 530 is fixed in the fixing hole 521 to restrict the axial movement of the second tooth post 601 relative to the first optical axis section 520.

[0103] In the embodiment shown in the figures of this invention, the first optical axis segment 520 is located on the side of the first meshing tooth 510 facing the lens barrel 220. When the second tooth post 601 is fitted onto the first optical axis segment 520, the rearward-facing end face of the second meshing tooth 610 is opposite to the forward-facing end face of the first meshing tooth 510, and there is a certain gap between them, so that the second tooth post 601 can rotate relative to the first optical axis segment 520. It can be understood that in order to ensure the cooperation effect between the second tooth post 601 and the elastic strip 302, the second tooth post 601 needs to be able to rotate relative to the first optical axis segment 520, but cannot move axially relative to the first optical axis segment 520. Accordingly, the axial gap between the first meshing tooth 510 and the second meshing tooth 610 only needs to be sufficient to allow the second tooth post 601 to rotate relative to the first optical axis segment 520, and there is no need to reserve an excessively long gap.

[0104] Understandably, the second toothed column 601 needs to be able to rotate relative to the first optical axis segment 520, but cannot move axially relative to the first optical axis segment 520. To achieve circumferential rotation of the second toothed column 601 and restrict its axial movement, the present invention provides a fixing hole 521 at the end of the first optical axis segment 520 away from the first meshing tooth 510. Understandably, the fixing hole 521 is a blind hole. A fixing pin 530 passes through the hollow of the second toothed column 601, extends into and is fixed in the fixing hole 521. In one embodiment, the fixing pin 530 is threaded, and the fixing hole 521 is also threaded. The fixing hole 521 and the fixing pin 530 are fixedly connected by the threads. Of course, the fixing pin 530 can also be fixed to the fixing hole 521 by means of adhesive or other methods. Understandably, the fixing pin 530 is fixed to the first toothed column 501 and cannot rotate with the rotation of the second toothed column 601. Along the radial direction of the second toothed post 601, the outer diameter of the retaining pin 530 is larger than the inner diameter of the second toothed post 601 to restrict the axial movement of the second toothed post 601 relative to the first optical axis segment 520, thereby preventing the second toothed post 601 from disengaging from the first optical axis segment 520. Simultaneously, the outer diameter of the retaining pin 530 is smaller than the outer diameter of the second toothed post 601, that is, the outer diameter of the retaining pin 530 is smaller than the outer diameter of the external thread 620, to prevent the retaining pin 530 from interfering with the threaded connection between the external thread 620 and the internal thread 221.

[0105] Of course, in other embodiments, a limiting hole can be provided at the end of the first optical axis segment 520 away from the first meshing tooth 510. When the second tooth post 601 is sleeved on the first optical axis segment 520, the limiting hole can expose the second tooth post 601. Then, the limiting bolt is inserted into the limiting hole to prevent the second tooth post 601 from coming out of the first optical axis segment 520.

[0106] Please see Figure 4In an embodiment of the present invention, the non-deformable segment 310 is provided with a limiting groove 312, and a rack 311 is provided on one wall of the limiting groove 312. The two opposite groove walls adjacent to the rack 311 are used to stop the second meshing tooth 610.

[0107] Understandably, when the focus is adjusted and the elastic strip 302 engages with the second toothed column 601, the rack 311 of the elastic strip 302 will move relative to the second meshing tooth 610 in the left-right direction. To prevent the rack 311 from disengaging from the second meshing tooth 610, in the embodiment shown in the figures of this invention, the non-deformable section 310 is provided with a limiting groove 312, the depth direction of which is the front-back direction. When the toothed column unit extends into the first connecting hole 212, it needs to pass through the limiting groove 312. In the embodiment shown in the figures of this invention, the limiting groove 312 has a top wall, a bottom wall, and left and right side walls. A rack 311 is provided on one wall of the limiting groove 312. In one embodiment, the rack 311 is provided on the top wall of the limiting groove 312. Of course, the rack 311 can also be provided on the bottom wall. Of course, in other embodiments, the limiting groove 312 may only have a top wall or a bottom wall, and the left and right side walls are used to stop the second meshing tooth 610, thereby preventing the second meshing tooth 610 from meshing and separating from the rack 311, and preventing the connection between the tooth column unit and the rack 311 from failing.

[0108] Please see Figure 6 , Figure 10 and Figure 12 In an embodiment of the present invention, the second tooth post 601 is provided with a second optical axis section 630 between the second meshing tooth 610 and the external thread 620, and the second optical axis section 630 is provided with a first step 631; the optical housing 210 is provided with a limiting hole 217 communicating with the first connecting hole 212, and the limiting pin 218 extends into the limiting hole 217.

[0109] When the elastic strip 302 engages with the first toothed post 501, the limiting pin 218 abuts against the first step 631; when the elastic strip 302 engages with the second toothed post 601, the limiting pin 218 abuts against the end of the external thread 620 facing the second optical shaft section 630.

[0110] Understandably, the clutch structure 400 is used to switch the mating object of the elastic strip 302, that is, the clutch structure 400 is used to control whether the elastic strip 302 is mated with the first toothed post 501 or the second toothed post 601. To ensure that the clutch structure 400 switches to the correct mating object, that is, when the elastic strip 302 is mated with the first toothed post 501 to adjust the interpupillary distance, it is necessary to ensure that the rack 311 is engaged with a portion of the first meshing teeth 510, and the internal teeth 213 are engaged with a portion of the first meshing teeth 510; when the elastic strip 302 is mated with the second toothed post 601 to adjust the focal length, it is necessary to ensure that the rack 311 is engaged with the second meshing teeth 610, and the internal teeth 213 are engaged with all the first meshing teeth 510. Therefore, the present invention provides a limiting pin 218 and a limiting hole 217 structure.

[0111] Specifically, such as Figure 6 As shown, the second toothed post 601 has a second optical axis section 630 between the second meshing tooth 610 and the external thread 620, and the second optical axis section 630 has a first step 631. Meanwhile, the optical housing 210 has a limiting hole 217 (as shown). Figure 10 , Figure 12 As shown), the limiting hole 217 is connected to the first connecting hole 212. The limiting pin 218 extends into the limiting hole 217, and the end of the limiting pin 218 extending into the limiting hole 217 can protrude from the limiting hole 217. Thus, when the elastic strip 302 engages with the first toothed post 501, that is, when the toothed strip 311 engages with part of the first meshing tooth 510, as... Figure 10 As shown, the limiting pin 218 can abut against the first step 631, thereby reminding the user to switch to the correct position and preventing the first toothed post 501 from being adjusted too far back and disengaging from the engagement range with the rack 311. When the elastic strip 302 engages with the second toothed post 601, that is, when the rack 311 engages with the second meshing tooth 610, as... Figure 12 As shown, the limiting pin 218 abuts against the end of the external thread 620 facing the second meshing tooth 610, thereby reminding the user to switch to the position and preventing the second tooth post 601 from being adjusted too far forward and meshing with the internal tooth 213, thus affecting the rotation of the second tooth post 601 around the first optical axis segment 520.

[0112] Please see Figure 5 and Figure 10 In an embodiment of the present invention, the optical housing 210 includes a base 201, a sleeve 202, and a connecting tube 203 connecting the base 201 and the sleeve 202. The first connecting hole 212 passes through the base 201, the connecting tube 203, and the sleeve 202. The lens tube 220 is disposed inside the sleeve 202 and can move relative to the sleeve 202 in the front-back direction.

[0113] The connecting cylinder 203 is provided with a second step 204. When the elastic strip 302 is engaged with the first toothed post 501, the second step 204 is used to abut against the end of the second meshing tooth 610 facing the external thread 620.

[0114] It is understood that in the solutions shown in the figures of this invention, such as Figure 5 , Figure 9 As shown, the optical housing 210 includes a base 201, a connecting cylinder 203, and a sleeve 202 connected in sequence. A first connecting hole 212 passes through the base 201, the connecting cylinder 203, and the sleeve 202. The base 201 has a sliding groove 211, and the connecting cylinder 203 has a limiting hole 217. The sleeve 202 is hollow to provide a receiving space for the lens barrel 220. It is understood that the lens barrel 220 needs to be movable relative to the sleeve 202 to achieve focal length adjustment. That is, a moving gap is provided between the outer wall of the lens barrel 220 and the inner wall of the sleeve 202 to allow for the back-and-forth movement of the lens barrel 220.

[0115] Please see Figure 10 The connecting cylinder 203 has a second step 204 inside, which protrudes towards the interior of the connecting cylinder 203. When the elastic strip 302 engages with the first toothed post 501, the side of the second step 204 facing the seat 201 abuts against the side of the second meshing tooth 610 facing the external thread 620, thereby further improving the reliability of the engagement between the elastic strip 302 and the first toothed post 501. At the same time, the limiting hole 217 is located at the second step 204, and the setting of the second step 204 also helps to improve the structural strength of the connecting cylinder 203.

[0116] Please see Figure 10 and Figure 12 In an embodiment of the present invention, the clutch structure 400 includes a first magnetic element 410 and a second magnetic element 420 disposed opposite to each other. At least one of the first magnetic element 410 and the second magnetic element 420 is an electromagnet. The first magnetic element 410 is disposed at one end of the first tooth post 501 where a first meshing tooth 510 is provided, and the second magnetic element 420 is disposed at one end of the optical housing 210 where an internal tooth 213 is provided.

[0117] When the first magnetic element 410 and the second magnetic element 420 have the same polarity, the first meshing tooth 510 moves away from the second magnetic element 420, so that part of the first meshing tooth 510 meshes with the internal tooth 213 and part meshes with the rack 311.

[0118] When the polarities of the first magnetic element 410 and the second magnetic element 420 are opposite, the first meshing tooth 510 meshes with the internal tooth 213, and the second meshing tooth 610 meshes with the rack 311.

[0119] Understandably, in the embodiment shown in the figures of this invention, the clutch structure 400 employs a magnetic structure, which includes a first magnetic element 410 and a second magnetic element 420 disposed opposite to each other, and at least one of the first magnetic element 410 and the second magnetic element 420 is an electromagnet. The first magnetic element 410 is mounted on the end face of the first toothed post 501 at the end where the first meshing tooth 510 is provided, and the second magnetic element 420 is disposed on the end face of the optical housing 210 at the end where the internal tooth 213 is provided. Thus, when the first toothed post 501 extends into the first connecting hole 212, the first magnetic element 410 and the second magnetic element 420 can be disposed opposite to each other.

[0120] In one embodiment, due to the switching between interpupillary distance adjustment and focal length adjustment functions, the first toothed post 501 needs to move in the front-to-back direction. Therefore, the first magnetic element 410 on the first toothed post 501 is configured as a permanent magnet, and the second magnetic element 420 on the electrical housing is configured as an electromagnet. Specifically, the first toothed post 501 has a mounting hole at the end with the first meshing tooth 510, and the permanent magnet is installed in the mounting hole by means of bonding, interference fit, etc. In one embodiment, to ensure the adsorption or repulsion effect of the first magnetic element 410 and the second magnetic element 420, the outer surface of the permanent magnet is flush with the end face of the first toothed post 501. In one embodiment, the optical circuit board 103 is mounted on the side of the optical housing 210 base 201 away from the sleeve 202, and the second magnetic element 420, i.e., the electromagnet, is located on the side of the optical circuit board 103 facing the base 201. In one embodiment, the optical circuit board 103 is fixed to the base 201 by bolts. Understandably, the optical circuit board 103 needs to be electrically connected to the main circuit board 102. In one embodiment, the optical circuit board 103 is electrically connected to the main circuit board 102 via a connecting circuit board 104.

[0121] Of course, in other embodiments, the first magnetic element 410 and the second magnetic element 420 may both be electromagnets, or the first magnetic element 410 may be an electromagnet and the second magnetic element 420 may be a magnetic structural element containing materials such as iron, cobalt, and nickel.

[0122] Thus, by controlling the polarity of the first magnetic element 410 and the second magnetic element 420, the mating object of the elastic strip 302 can be switched. Figure 10 As shown, when the polarities of the first magnetic element 410 and the second magnetic element 420 are the same, they repel each other, and the first tooth post 501 is pushed backward, causing the first tooth post 501 to move away from the second magnetic element 420, so that part of the first meshing tooth 510 meshes with the inner tooth 213, and part of the first meshing tooth 510 can mesh with the rack 311 of the elastic strip 302, thereby adjusting the interpupillary distance.

[0123] like Figure 12As shown, when the polarities of the first magnetic element 410 and the second magnetic element 420 are opposite, they attract each other, and the first tooth post 501 is subjected to a backward adsorption force, so that all the first meshing teeth 510 mesh with the inner teeth 213, and the second meshing teeth 610 can mesh with the inner teeth 213 of the elastic strip 302, thereby adjusting the focal length.

[0124] Of course, in other embodiments, the clutch structure 400 can also be an electrically driven structure. For example, the electrically driven structure includes a motor and a connecting rod, with one end of the connecting rod connected to the motor and the other end connected to the first toothed column 501. The motor drives the connecting rod to move in the back-and-forth direction, thereby switching the engaging object of the elastic strip 302.

[0125] Please see Figure 2 and Figure 3 In an embodiment of the present invention, the adjustment component 300 further includes a drive structure 700, which drives the deformation of the deformable segment 320 and controls the magnitude of the deformation of the deformable segment 320 to control the adjustment of the interpupillary distance or focal length. Thus, the drive structure 700 adjusts the interpupillary distance or focal length by driving the deformation of the elastic strip 302. Simultaneously, the drive structure 700 can also control the degree of deformation of the elastic strip 302, thereby controlling the degree of adjustment of the interpupillary distance and focal length, which facilitates multi-level or stepless adjustment of the interpupillary distance and focal length.

[0126] In an embodiment of the present invention, the driving structure 700 includes a third magnetic element 710 and a fourth magnetic element 720 disposed opposite to each other. At least one of the third magnetic element 710 and the fourth magnetic element 720 is an electromagnet. The third magnetic element 710 is disposed in the deformable section 320, and the fourth magnetic element 720 is disposed in the receiving cavity 110. When the polarities of the third magnetic element 710 and the fourth magnetic element 720 are the same, the deformable section 320 deforms in a direction away from the fourth magnetic element 720.

[0127] It is understood that in the embodiment shown in the figures of this invention, the driving structure 700 employs a magnetic structure. The magnetic structure includes a third magnetic element 710 and a fourth magnetic element 720 disposed opposite to each other. In one embodiment, in order to enable the deformation of the deformable segment 320 to drive the two non-deformable segments 310 to move in the left-right direction, the third magnetic element 710 and the fourth magnetic element 720 are arranged in the up-down direction.

[0128] In one embodiment, since the deformable segment 320 of the elastic strip 302 needs to deform, the third magnetic element 710 is configured as a permanent magnet, and the fourth magnetic element 720 is configured as an electromagnet. In one embodiment, the deformable segment of the elastic strip 302 is provided with a mounting hole, and the third magnetic element 710 is mounted in the mounting hole by means of bonding, interference fit, etc. A main circuit board 102 is installed in the receiving cavity 110, and the fourth magnetic element 720 is mounted on the side of the main circuit board 102 facing the deformable segment 320.

[0129] Of course, in other embodiments, the third magnetic element 710 and the fourth magnetic element 720 may both be electromagnets, or the third magnetic element 710 may be a magnetic structural element containing materials such as iron, cobalt, and nickel, and the fourth magnetic element 720 may be an electromagnet.

[0130] Thus, when the polarities of the third magnetic element 710 and the fourth magnetic element 720 are the same, they repel each other, causing the deformable segment 320 to arch and deform, thereby driving the two non-deformable segments 310 to move closer to each other. Understandably, the adjustment of interpupillary distance and focal length can be controlled by adjusting the polarity of the electromagnets in the third magnetic element 710 and the fourth magnetic element 720, thereby controlling the degree of deformation of the deformable segment 320 and thus the adjustment of interpupillary distance and focal length. When the polarities of the third magnetic element 710 and the fourth magnetic element 720 are opposite, they attract each other, the deformable segment 320 remains straight and does not deform, and the interpupillary distance and focal length of the head-mounted display device can return to their initial state.

[0131] Please see Figure 1 and Figure 2 In an embodiment of the present invention, the outer shell 100 is provided with a touch area 120, and a touch circuit board 101 disposed opposite to the touch area 120 is installed in the receiving cavity 110. The touch circuit board 101 is electrically connected to the third magnetic element 710 or the fourth magnetic element 720.

[0132] Understandably, to facilitate the adjustment of interpupillary distance and focal length, a touch area 120 is provided on the housing 100, and a touch screen is installed in the touch area 120. A touch circuit board 101 is installed in the receiving cavity 110, and the touch circuit board 101 is arranged opposite to the touch area 120. The touch circuit board 101 is electrically connected to the main circuit board 102 through the connecting circuit board 104, thereby controlling the working state of the electromagnets in the third magnetic component 710 and the fourth magnetic component 720, thereby controlling the deformation and degree of deformation of the deformable segment 320 of the elastic strip 302. Since the main circuit board 102 is electrically connected to the optical circuit board 103, the switching of interpupillary distance and focal length adjustment can also be realized through the touch area 120.

[0133] Specifically, in one embodiment, a single tap may adjust the interpupillary distance, a double tap may adjust the focal length, a swipe forward may increase the focal length, and a swipe backward may decrease it. No restrictions are placed on the control logic of the touch area 120.

[0134] Please see Figure 2 and Figure 13In an embodiment of the present invention, a fixed seat 800 is installed in the receiving cavity 110. The fixed seat 800 includes a seat body 810 and a seat bracket 820 fixed on the seat body 810. Both optical modules 200 are movably installed on the seat body 810 and located on opposite sides of the seat bracket 820. Positioning grooves 821 are formed at opposite ends of the seat bracket 820. Both ends of the elastic strip 302 extend into the sliding groove 211 through the positioning grooves 821.

[0135] Understandably, to facilitate the installation of the optical module 200 and the adjustment assembly 300, a fixing seat 800 is provided within the receiving cavity 110. The fixing seat 800 includes a seat body 810 and a seat bracket 820. In one embodiment, the seat bracket 820 and the seat body 810 are an integral structure; of course, they can also be separate structures connected by bolts or other means. In the left-right direction, the seat bracket 820 is installed in the middle of the seat body 810, and both optical modules 200 are movably installed on the seat body 810 and located on opposite sides of the seat bracket 820. Specifically, the slide bar 216 mentioned above is fixed to the seat body 810, and the slide plate 214 can slide relative to the seat body 810.

[0136] In one embodiment, the height of the seat bracket 820 is higher than that of the seat body 810 in the vertical direction, and the seat bracket 820 is used to mount the elastic strip 302. Simultaneously, the main circuit board 102 is also mounted on the seat bracket 820 so that the fourth magnetic element 720 can be positioned opposite the third magnetic element 710. In the embodiment shown in the figures of this invention, the deformable segment 320 of the elastic element can arch upwards to deform. To ensure the deformation direction of the deformable segment 320 and thus guarantee the adjustment effect of interpupillary distance and focal length, this invention provides a guide for the deformation of the deformable segment 320. Specifically, positioning grooves 821 are provided on opposite sides of the seat bracket 820. The two ends of the elastic strip 302 pass through the two positioning grooves 821 respectively and then extend into the two sliding grooves 211, thereby improving the reliability of interpupillary distance and focal length adjustment.

[0137] Please see Figure 13 In an embodiment of the present invention, the two ends of the support bracket 820 are respectively provided with two opposing support arms 830, each of the two support arms 830 is provided with a positioning hole 831, and a rotating cylinder 840 is provided between the two support arms 830. A connecting pin 850 passes through the two positioning holes 831 and the rotating cylinder 840 so that the rotating cylinder 840 can rotate relative to the support arms 830. A positioning groove 821 is formed between the rotating cylinder 840 and the two support arms 830.

[0138] Understandably, the material of the deformable segment 320 is generally soft to facilitate its deformation. To prevent the deformable segment 320 from bending or deforming due to pressure from the groove wall of the positioning groove 821 during its upward arching process, in one embodiment, a rotating cylinder 840 is provided above the positioning groove 821. Specifically, the two ends of the support bracket 820 are respectively provided with two opposing support arms 830, which are spaced apart in the front-rear direction. Both support arms 830 are provided with positioning holes 831, and the rotating cylinder 840 is installed between the two support arms 830. At the same time, the rotating cylinder 840 is also provided with positioning holes 831. The positioning pin passes through the support arm 830 and the rotating cylinder 840, thereby installing the rotating cylinder 840 on the two support arms 830 and allowing the rotating cylinder 840 to rotate relative to the positioning pin. Thus, when the deformable section 320 arches upward and deforms, the rotating cylinder 840 can rotate as the two ends of the elastic strip 302 move closer to each other, thereby avoiding hard contact between the rotating cylinder 840 and the deformable section 320, and avoiding bending of the deformable section 320 at the position of the rotating cylinder 840.

[0139] In one embodiment, the rotating cylinder 840 is made of a soft material, such as silicone or rubber. This further avoids hard contact between the rotating cylinder 840 and the deformable section 320, and prevents accidental bending of the deformable section 320 at the position of the rotating cylinder 840.

[0140] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A head-mounted display device, comprising: The application relates to a spectacle frame, which comprises: a housing with a receiving cavity formed therein; two optical modules spaced apart in the left-right direction and movably mounted in the receiving cavity, each of the two optical modules comprising a lens barrel provided with a lens; an adjusting assembly extending transversely on the side of the two lens barrels away from the lenses, the adjusting assembly comprising an adjusting body movably arranged in the receiving cavity, a clutch structure arranged in the receiving cavity, and first and second matching structures corresponding to each of the optical modules and arranged in the front-rear direction; the adjusting body is provided with a rack, the first matching structure comprises a first toothed column provided with a first engaging tooth at one end, and the second matching structure comprises a second toothed column which is sleeved on the first toothed column and is provided with a second engaging tooth; when the interpupillary distance of the two optical modules is adjusted, the clutch structure controls the first and second matching structures to move in the front-rear direction, the first engaging tooth is combined with the rack, and the second engaging tooth is separated from the rack; when the focal length of the optical modules is adjusted, the clutch structure controls the first and second matching structures to move in the front-rear direction, the second engaging tooth is combined with the rack, and the first engaging tooth is separated from the rack.

2. The head-mounted display device of claim 1, wherein, The adjusting body is configured as an elastic strip, the elastic strip comprises non-deformable sections arranged at two ends and a deformable section arranged between the two non-deformable sections, the two non-deformable sections are used for matching with the two first matching structures or the two second matching structures, and the deformable section is deformed to drive the two non-deformable sections to move towards each other or away from each other, so as to adjust the interpupillary distance or the focal length.

3. The head-mounted display device of claim 2, wherein, The two non-deformable sections are each provided with the rack; when the interpupillary distance is adjusted, the first engaging tooth is engaged with the rack, and the rotation of the first engaging tooth relative to the rack is limited.

4. The head-mounted display device of claim 3, wherein, The optical modules are provided with internal teeth, the first engaging tooth is engaged with the internal teeth, so that the rotation of the first engaging tooth relative to the rack is limited, and the first engaging tooth can move in the front-rear direction relative to the internal teeth.

5. The head-mounted display device of claim 4, wherein, The optical modules further comprise an optical shell, the lens barrel is connected with the optical shell through the first toothed column, the optical shell is provided with a sliding groove extending in the left-right direction and a first connecting hole extending in the front-rear direction, the sliding groove and the first connecting hole are communicated, and the first connecting hole is formed with the internal teeth on the side of the sliding groove away from the lens barrel; the two ends of the elastic strip respectively extend into the two sliding grooves and can slide relative to the sliding grooves, and the first toothed column extends into the first connecting hole; when the interpupillary distance is adjusted, the clutch structure controls part of the first engaging teeth to be engaged with the internal teeth and part of the first engaging teeth to be engaged with the rack, so that the deformable section is deformed to drive the two non-deformable sections to move in the left-right direction and drive the two optical modules to move towards or away from each other in the left-right direction.

6. The head-mounted display device of claim 5, wherein, The second toothed column is provided with external threads; the lens barrel is provided with internal threads, and the external threads are threadedly connected with the internal threads. When the focal length is adjusted, the clutching structure controls the first engaging teeth to engage with the internal teeth and the second engaging teeth to engage with the rack gear, so that the deformable section is deformed to drive the two non-deformable sections to move in the left-right direction, drive the second tooth column to rotate relative to the first tooth column, drive the internal thread to rotate relative to the external thread, and drive the lens barrel to move relative to the optical housing in the front-back direction.

7. The head-mounted display device of claim 6, wherein, The first tooth column is further provided with a first optical axis section for sleeving the second tooth column, and an end of the first optical axis section away from the first engaging teeth is provided with a fixing hole, and a fixing pin is fixed in the fixing hole and used for limiting the axial movement of the second tooth column relative to the first optical axis section.

8. The head-mounted display device of claim 6, wherein, The non-deformable section is provided with a limiting groove, one groove wall of the limiting groove is provided with the rack gear, and two opposite groove walls adjacent to the rack gear are used for stopping the second engaging teeth; and / or The second tooth column is provided with a second optical axis section between the second engaging teeth and the external thread, and the second optical axis section is provided with a first step; the optical housing is provided with a limiting hole in communication with the first connecting hole, and a limiting pin extends into the limiting hole; When the elastic strip cooperates with the first tooth column, the limiting pin abuts against the first step; when the elastic strip cooperates with the second tooth column, the limiting pin abuts against an end of the external thread facing the second optical axis section; and / or The optical housing comprises a seat body, a sleeve and a connecting barrel connecting the seat body and the sleeve, the first connecting hole penetrates through the seat body, the connecting barrel and the sleeve, and the lens barrel is arranged in the sleeve and can move relative to the sleeve in the front-back direction; The connecting barrel is provided with a second step, and when the elastic strip cooperates with the first tooth column, the second step is used for abutting against an end of the second engaging teeth facing the external thread.

9. The head-mounted display device of claim 6, wherein, The clutching structure comprises oppositely arranged first and second magnetic members, at least one of the first and second magnetic members is an electromagnet, the first magnetic member is arranged on the first tooth column, and the second magnetic member is arranged on the optical housing; When the first and second magnetic members have the same polarity, the first engaging teeth move away from the second magnetic member, so that part of the first engaging teeth engages with the internal teeth and part of the first engaging teeth engages with the rack gear; When the first and second magnetic members have opposite polarities, the first engaging teeth engage with the internal teeth, and the second engaging teeth engage with the rack gear.

10. The head-mounted display device of claim 5, wherein, The adjusting assembly further comprises a driving structure for driving the deformation of the deformable section and controlling the deformation size of the deformable section, so as to control the adjustment size of the interpupillary distance or the focal length.

11. The head-mounted display device of claim 10, wherein, The driving structure comprises oppositely arranged third and fourth magnetic members, at least one of the third and fourth magnetic members is an electromagnet, the third magnetic member is arranged on the deformable section, and the fourth magnetic member is arranged in the accommodating cavity; when the third and fourth magnetic members have the same polarity, the deformable section is deformed in a direction away from the fourth magnetic member.

12. The head-mounted display device of claim 11, wherein, The shell is provided with a touch area, a touch circuit board is arranged opposite to the touch area in the accommodating cavity, and the touch circuit board is electrically connected with the third magnetic member or the fourth magnetic member.

13. The head-mounted display device of claim 5, wherein, The accommodating cavity is provided with a fixing seat, the fixing seat comprises a seat body and a seat support fixed to the seat body, the two optical modules are movably arranged on the seat body and located on opposite sides of the seat support, opposite ends of the seat support are formed with positioning grooves, and the two ends of the elastic strip are respectively inserted into the sliding grooves through the positioning grooves.

14. The head-mounted display device of claim 13, wherein, Opposite ends of the seat support are respectively provided with two oppositely arranged support arms, the two support arms are both provided with positioning holes, a rotating cylinder is arranged between the two support arms, a connecting pin penetrates through the two positioning holes and the rotating cylinder, so that the rotating cylinder can rotate relative to the support arms, and the rotating cylinder and the two support arms form the positioning grooves.

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