Near-to-eye display device

Abstract

The invention discloses near-to-eye display equipment, and belongs to the technical field of electronic equipment, and the near-to-eye display equipment comprises an equipment housing, an optical machine module and a grounding support. The optical machine module comprises a lens cone and a circuit device, and the circuit device is connected with the lens cone. The lens cone is in sliding connection with the equipment shell, and the lens cone can slide relative to the equipment shell; the grounding support is fixedly arranged on the lens cone, the grounding support is electrically connected with the circuit device, and the grounding support moves relative to the equipment shell along with sliding of the lens cone and makes contact with the equipment shell; and the circuit device is electrically conducted with the equipment shell through the grounding bracket.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, and specifically relates to a near-eye display device. Background Technology

[0002] In recent years, the rapid development of technologies such as VR (virtual reality), AR (augmented reality), and MR (mixed reality) has gradually satisfied people's pursuit of visual experiences. VR, AR, and MR electronic devices are usually equipped with head-mounted near-eye display devices. Near-eye display devices can free people's hands, reduce dependence on screens, and create better visual effects.

[0003] Near-eye display devices consist of a housing and an optical engine module (OEM). The OEM is connected to the housing and is the core component of the near-eye display device, responsible for displaying images to the user. In related technologies, during use, the circuitry of the OEM is susceptible to ESD (Electrostatic Discharge) interference due to factors such as human touch and friction between components. This can easily cause screen distortion, flickering, line flashing, or even damage to the OEM. To address this ESD interference, the OEM's circuitry is electrically connected to the housing via a conductive cloth. One end of the conductive cloth is attached to the circuitry, and the other end to the housing. The conductive cloth then conducts static electricity generated on the OEM to the housing for release, thus preventing any impact on the OEM.

[0004] However, since both the circuitry and housing of the optomechanical module need to be bonded to the conductive cloth, two additional impedances are introduced: the bonding impedance between the circuitry and the conductive cloth, and the bonding impedance between the conductive cloth and the housing. During long-term use, environmental humidity can cause aging at the bonding points, leading to increased impedance and a significant decrease in the electrostatic discharge performance of the optomechanical module. Therefore, the reliability of the electrostatic discharge performance of optomechanical modules in related technologies is poor. Summary of the Invention

[0005] The purpose of this application is to provide a near-eye display device that can solve the technical problem of poor reliability of electrostatic discharge performance of the optomechanical module.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows: This application discloses a near-eye display device, including: Equipment housing; An optical-mechanical module, comprising a lens barrel and a circuit device, wherein the circuit device is connected to the lens barrel; the lens barrel is slidably connected to the device housing, and the lens barrel is slidable relative to the device housing; A grounding bracket is fixedly mounted on the lens barrel and electrically connected to the circuit device. The grounding bracket moves relative to the equipment housing as the lens barrel slides and comes into contact with the equipment housing. The circuit device is electrically connected to the equipment housing through the grounding bracket.

[0007] In this embodiment, a grounding bracket is fixedly mounted on the lens barrel and electrically connected to the circuitry. The grounding bracket moves relative to the device housing as the lens barrel slides and comes into contact with the housing. The circuitry is electrically connected to the housing via the grounding bracket. This design, where the circuitry is electrically connected to the housing via the grounding bracket, avoids the influence of environmental factors on the impedance between the grounding bracket and the housing, resulting in a more stable impedance between them and thus improving the reliability of the electrostatic discharge performance of the optomechanical module. Attached Figure Description

[0008] Figure 1 and Figure 2 This is a schematic diagram of the structure of a near-eye display device disclosed in an embodiment of this application; Figures 3 to 6 This is a schematic diagram of the structure of some components of the first near-eye display device disclosed in the embodiments of this application; Figure 7 and Figure 8 This is a schematic diagram of the structure of some components of the second near-eye display device disclosed in the embodiments of this application; Figure 9 and Figure 10 This is a schematic diagram of the structure of some components of the third near-eye display device disclosed in the embodiments of this application; Figure 11 and Figure 12 This is a schematic diagram of the structure of some components of the fourth near-eye display device disclosed in the embodiments of this application; Figure 13 and Figure 14 This is a schematic diagram of the structure of the optical engine module of the near-eye display device disclosed in the embodiments of this application; Figure 15 and Figure 16 This is a schematic diagram of the slide rail structure of the near-eye display device disclosed in the embodiments of this application.

[0009] Explanation of reference numerals in the attached figures: 100-Equipment housing, 110-Frame, 120-Slide rail, 121-Matching slide groove, 122-Strip plane, 300-Optical module, 310-Lens barrel, 311-Cylinder body, 312-Slider, 3121-Guide hole, 3122-First clearance hole, 320-Circuit device, 321-First circuit board, 322-Second circuit board, 330-Display screen, 340-Eye tracking device, 350-Lens group, 400-Grounding bracket, 410-Fixing part. 411-First plate, 412-Second plate, 413-Third plate, 414-Fourth plate, 4101-Second clearance hole, 4102-Embedding groove, 420-Contact part, 421-Metal spring, 4211-First sidewall, 4212-Second sidewall, 4213-Third sidewall, 4214-Fourth sidewall, 4215-Gap, 422-Metal spring, 423-Metal pressure plate, 424-Conductive foam, 425-Metal ball, 500-Conductive layer. Detailed Implementation

[0010] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0011] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0012] The near-eye display device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0013] Please refer to Figures 1 to 16 This application discloses a near-eye display device, which includes a device housing 100, an optomechanical module 300, and a grounding bracket 400.

[0014] The device housing 100 provides a mounting base for other components of the near-eye display device.

[0015] The optomechanical module 300 includes a lens barrel 310 and a circuit device 320, which is connected to the lens barrel 310. The lens barrel 310 provides a mounting base for other components of the optomechanical module 300 and provides a specific propagation path for light. The display screen 330 and lens group 350 on the optomechanical module 300 are arranged along the axial direction of the lens barrel 310. The circuit device 320 can be connected to the display screen 330 and also to the eye-tracking device 340 on the optomechanical module 300. The eye-tracking device 340 can achieve gaze-based human-computer interaction by capturing and analyzing the user's eye movement trajectory. The specific structure and principle of the eye-tracking device 340 are well-known technologies and are not limited herein. Of course, the circuit device 320 can also be electrically connected to other functional devices, which is also not limited herein. The lens barrel 310 is slidably connected to the device housing 100 and can slide relative to the device housing 100. At this time, the position of the lens barrel 310 relative to the device housing 100 is adjustable, thus enabling adjustment of the interpupillary distance and improving the user experience. The lens barrel 310 can slide relative to the device housing 100 along one of the length, width, or thickness directions of the near-eye display device.

[0016] The grounding bracket 400 is fixedly mounted on the lens barrel 310. Optionally, the grounding bracket 400 can be fixed to the lens barrel 310 by means of snap-fit, threading, welding, or riveting. Of course, the grounding bracket 400 can also be fixedly connected to the lens barrel 310 in other ways, which are not limited in this article. The grounding bracket 400 is electrically connected to the circuit device 320. This electrical connection can be understood as the static electricity on the circuit device 320 being transferred to the grounding bracket 400. At this time, the grounding bracket 400 can be in direct contact with the circuit device 320, or the grounding bracket 400 can also be grounded to the circuit device 320 through other conductive structures, which are not limited in this article.

[0017] The grounding bracket 400 moves relative to the equipment housing 100 as the lens barrel 310 slides, and is in contact with the equipment housing 100. During this sliding process, the lens barrel 310 drives the grounding bracket 400 to move as well, and the grounding bracket 400 remains in contact with the equipment housing 100 throughout this movement. Since the lens barrel 310 moves along with the grounding bracket 400, the movement path of the lens barrel 310 is the same as the movement path of the grounding bracket 400. The circuit device 320 is electrically connected to the equipment housing 100 through the grounding bracket 400. During the sliding process of the lens barrel 310, the grounding bracket 400 remains in contact with the equipment housing 100, therefore the circuit device 320 is always grounded to the equipment housing 100 through the grounding bracket 400. Static electricity on the circuit device 320 is transferred to the equipment housing 100 through the grounding bracket 400.

[0018] In this application, the contact point between the equipment housing 100 and the grounding bracket 400 needs to be grounded. Therefore, the contact point between the equipment housing 100 and the grounding bracket 400 is made of metal to ensure that static electricity can be transferred to the equipment housing 100, thereby forming a circuit. The equipment housing 100 and the grounding bracket 400 can be in sliding contact or rolling contact; the specific contact method is not limited herein.

[0019] In the embodiments disclosed in this application, the circuit device 320 is electrically connected to the device housing 100 via the grounding bracket 400, thereby avoiding the influence of environmental factors on the impedance between the grounding bracket 400 and the device housing 100, thus making the impedance between the circuit device 320 and the device housing 100 more stable, thereby improving the reliability of the electrostatic discharge performance of the optomechanical module 300.

[0020] Furthermore, the conductive cloth in the background technology is an adhesive-based fixing structure, which is prone to adhesive failure and poor contact with long-term use or vibration of near-eye display devices, thus easily leading to interruption of the electrostatic discharge path. In contrast, the grounding bracket 400 disclosed in this application is physically connected to the device housing 100 and maintains contact throughout the sliding process of the lens barrel 310. Therefore, the grounding bracket 400 can continuously and stably conduct static electricity from the circuit device 320 to the device housing 100, thereby avoiding the risk of static electricity accumulation caused by contact failure and improving the stability of the electrostatic discharge performance of the optomechanical module 300.

[0021] Furthermore, the technical solution disclosed in this application is also more suitable for the dynamic grounding requirements of the sliding lens barrel 310. The conductive cloth is a flexible adhesive structure, and when the lens barrel 310 slides, it will generate tensile and bending stress on the conductive cloth, which will easily accelerate the aging and damage of the conductive cloth. In contrast, the grounding bracket 400 in this application is a rigid structure and is fixed to the lens barrel 310. It moves synchronously with the lens barrel 310. During the movement, it only generates friction with the equipment housing 100 and will not generate additional stress damage. Therefore, it is perfectly adapted to the movement conditions of the optomechanical module 300, which is conducive to further improving the stability and reliability of the electrostatic discharge performance of the optomechanical module 300.

[0022] In addition, the conductive cloth in the background technology is a consumable material that is easily damaged. When it is replaced, it needs to be re-torn and re-aligned, which is cumbersome. In contrast, the grounding bracket 400 in this application is a rigid component with a long service life and wear resistance. It does not need to be replaced frequently and can be directly fixed to the lens barrel 310 during installation. Subsequent maintenance only requires checking the contact status between the grounding bracket 400 and the device housing 100. Therefore, it is beneficial to significantly reduce the maintenance cost and operation difficulty of near-eye display devices.

[0023] In the above scheme, the equipment housing 100 may be provided with a sliding contact area that contacts the grounding bracket 400, and the grounding bracket 400 may abut or overlap the sliding contact area.

[0024] In another optional embodiment, the device housing 100 may include a frame 110 and a slide rail 120. The frame 110 is the main body component of the device housing 100, and may be a middle frame, specifically an inner frame of the middle frame. The slide rail 120 may be fixedly mounted on the frame 110. If the frame 110 is an inner frame of the middle frame, the slide rail 120 may be fixedly mounted on the inner frame. The lens barrel 310 may be slidably connected to the slide rail 120 along the extending direction of the slide rail 120. The lens barrel 310 may move relative to the frame 110 along the extending direction of the slide rail 120.

[0025] The lens barrel 310 drives the grounding bracket 400 to move relative to the slide rail 120, and the grounding bracket 400 comes into contact with the slide rail 120. At this time, the grounding bracket 400 can move relative to the slide rail 120 as the lens barrel 310 moves. The circuit device 320 is electrically connected to the frame 110 through the grounding bracket 400 and the slide rail 120 in sequence. At this time, the static electricity on the circuit device 320 can be conducted to the frame 110 in sequence through the grounding bracket 400 and the slide rail 120.

[0026] In this design, the grounding bracket 400 contacts the slide rail 120, thus avoiding the need for a separate sliding contact area on the device housing 100, which helps to simplify the structure of the near-eye display device.

[0027] In the above embodiments, the slide rail 120 can be fixedly connected to the frame 110 by screws, rivets, or other components. In another optional embodiment, a slot is provided at a corresponding position on the frame 110, and a portion of the slide rail 120 can be inserted into the slot. Then, a pressure plate is provided at the opening of the slot, which can press the slide rail 120, thereby reliably fixing the slide rail 120 to the frame 110. Of course, the slide rail 120 and the frame 110 can also be fixed in other ways, which are not limited herein.

[0028] In one alternative embodiment, the lens barrel 310 may include a barrel body 311 and at least one slider 312. The slider 312 may be fixedly mounted on the barrel body 311 and located outside the barrel body 311. The circuit device 320 and the grounding bracket 400 may both be connected to the barrel body 311. The slider 312 may have a guide hole 3121, and a portion of the slide rail 120 may pass through the guide hole 3121, allowing the slide rail 120 to slide against the slider 312 via the guide hole 3121. In this case, the slider 312 is fitted onto the slide rail 120 through the guide hole 3121. The slider 312 can slide relative to the slide rail 120 along the extension direction of the slide rail 120, thereby achieving a sliding engagement between the barrel body 311 and the slide rail 120.

[0029] At least one slider 312 has a first clearance hole 3122, which communicates with a guide hole 3121. A portion of the grounding bracket 400 extends into the guide hole 3121 through the first clearance hole 3122 and contacts the slide rail 120. In this case, the first clearance hole 3122 on the slider 312 exposes the slide rail 120. Therefore, the grounding bracket 400 contacts the area of ​​the slide rail 120 exposed in the first clearance hole 3122.

[0030] In this design, the grounding bracket 400 occupies a portion of the slider 312 and contacts the slide rail 120, thus reducing the space occupied by the grounding bracket 400 and consequently decreasing the size of the near-eye display device. Furthermore, the portion of the grounding bracket 400 that contacts the slide rail 120 is located within the first clearance hole 3122 of the slider 312. In this case, the slider 312 protects the grounding bracket 400, preventing the risk of collision and deformation during movement. Simultaneously, the contact area between the grounding bracket 400 and the slide rail 120 is enclosed by the slider 312, preventing dust and moisture from affecting the contact point, thereby further improving the reliability and stability of electrostatic transfer.

[0031] In the above embodiments, there can be two optical engine modules 300, arranged at an interval. The extension direction of the slide rail 120 can be parallel to the arrangement direction of the two optical engine modules 300. In this case, the distance between the two optical engine modules 300 can be adjusted by driving the optical engine modules 300 to move relative to the slide rail 120. Of course, the slide rail 120 can also be along the axis of the lens barrel 310. In this case, the distance between the optical engine module 300 and the user's eye can be adjusted by driving the optical engine module 300 to move along the slide rail 120.

[0032] In another alternative embodiment, the grounding bracket 400 may include a fixing part 410 and a contact part 420, which are connected. The fixing part 410 and the contact part 420 can be connected by a rotating, fixed, or rolling connection. The fixing part 410 can be fixedly connected to the lens barrel 310. The fixing part 410 and the lens barrel 310 can be fixedly connected by bolts, rivets, or other components. The fixing part 410 is electrically connected to the circuit device 320. The contact part 420 can be located on the side of the fixing part 410 away from the lens barrel 310, and it contacts the slide rail 120. In this case, the contact part 420 can move and engage with the slide rail 120 along its extension direction.

[0033] In this design, the fixing part 410 is used to fix the grounding bracket 400 and also to achieve electrical connection with the circuit device 320. The contact part 420 is used to achieve electrical connection with the slide rail 120. At this time, the positions of the fixing part 410 and the contact part 420 can be flexibly set, thereby reducing the assembly difficulty of the grounding bracket 400.

[0034] In an optional embodiment, the contact portion 420 can be a metal spring 421 integrally formed with the fixing portion 410, and the metal spring 421 can slide and engage with the slide rail 120. In this case, the metal spring 421 can slide and engage with the slide rail 120 along the extending direction of the slide rail 120. In this solution, the metal spring 421 exerts a certain pressure on the slide rail 120, thus ensuring sufficient contact between the grounding bracket 400 and the slide rail 120, resulting in lower contact resistance, which further improves the reliability of the electrostatic discharge performance of the optomechanical module 300.

[0035] Furthermore, the fixing part 410 has a second clearance hole 4101. The contact part 420 is disposed opposite to the second clearance hole 4101, and the contact part 420 protrudes from the fixing part 410 in the direction toward the slide rail 120. The contact part 420 may have a first side wall 4211, a second side wall 4212, a third side wall 4213, and a fourth side wall 4214 arranged circumferentially. The first side wall 4211 and the third side wall 4213 are disposed opposite to each other, and the second side wall 4212 and the fourth side wall 4214 are disposed opposite to each other. The first side wall 4211 and the third side wall 4213 are respectively connected to the two side walls opposite to the second clearance hole 4101, and there is a gap 4215 between the second side wall 4212 and the fourth side wall 4214 and the side wall of the second clearance hole 4101.

[0036] In this design, the contact portion 420 protrudes from the fixing portion 410 towards the slide rail 120, which helps to further increase the contact area between the contact portion 420 and the slide rail 120. At the same time, the opposite sides of the contact portion 420 are connected to the fixing portion 410, which helps to improve the connection rigidity between the contact portion 420 and the fixing portion 410, thereby avoiding the risk of incomplete connection.

[0037] In another alternative embodiment, the contact portion 420 can be an elastic structural member, with one end fixedly connected to the fixing portion 410 and the other end slidingly engaged with the slide rail 120. In this case, the other end of the elastic structural member can slide and engage with the slide rail 120 along its extension direction. In this solution, the contact portion 420 is an elastic structural member, which has good elasticity, thus further ensuring the contact resistance of the contact portion 420 to the slide rail 120, thereby further improving the reliability of the electrostatic discharge performance of the module.

[0038] In the above embodiments, the contact portion 420 can be a metal spring 422.

[0039] In another alternative embodiment, the contact portion 420 may include a metal spring 422 and a metal pressure plate 423. One end of the metal spring 422 may be fixedly connected to the fixing portion 410. The other end of the metal spring 422 may be fixedly connected to the metal pressure plate 423. The surface of the metal pressure plate 423 facing away from the metal spring 422 may contact the slide rail 120, and the metal pressure plate 423 may slide in engagement with the slide rail 120. Here, the metal pressure plate 423 may slide in contact with the slide rail 120.

[0040] In this design, the metal spring 422 ensures good pressing performance, while the metal pressure plate 423 increases the contact area with the slide rail 120. Therefore, this design can further improve the contact reliability between the contact part 420 and the slide rail 120.

[0041] In another alternative, the contact portion 420 can be conductive foam 424. Conductive foam 424 has both a certain degree of elasticity and good conductivity. Therefore, using conductive foam 424 for the contact portion 420 can further ensure the reliability of the grounding impedance.

[0042] In another alternative, the contact portion 420 can be a metal ball 425. The fixing portion 410 can have an insert groove 4102. Part of the metal ball 425 can be located within the insert groove 4102, and the metal ball 425 can roll in contact with the slide rail 120. In this case, when the contact portion 420 slides relative to the slide rail 120, the metal ball 425 can roll within the insert groove 4102, thus reducing the friction between the contact portion 420 and the slide rail 120. Therefore, while ensuring reliable grounding impedance, the friction between the contact portion 420 and the slide rail 120 can be reduced, thereby reducing the risk of abnormal noise. Simultaneously, it can also reduce friction on the surface of the slide rail 120, extending the service life of the slide rail 120. In this solution, the grounding bracket 400 and the equipment housing 100 have rolling contact.

[0043] Furthermore, the slide rail 120 has a mating groove 121 extending along its extension direction, and part of the metal ball 425 is located within the mating groove 121. In this design, the mating groove 121 on the slide rail 120 can limit the metal ball 425, thereby avoiding the risk of the metal ball 425 falling off.

[0044] In another alternative embodiment, the fixing part 410 may include a first plate 411, a second plate 412, a third plate 413, and a fourth plate 414. The first plate 411 can be connected to the third plate 413 via the second plate 412, and both the first plate 411 and the third plate 413 can be bent relative to the second plate 412 in opposite directions. The fourth plate 414 can be connected to the third plate 413, and its bending direction is opposite to that of the second plate 412.

[0045] The first plate 411 and the third plate 413 can both be fixedly connected to the lens barrel 310. The first plate 411 and the third plate 413 can be fixedly connected to the lens barrel 310 using bolts, rivets, or other structures. Of course, the first plate 411 and the third plate 413 can also be fixedly connected to the lens barrel 310 using other components; this is not limited here. The first plate 411 can be electrically connected to the circuit device 320. Optionally, the first plate 411 can be electrically connected to the circuit device 320 through components such as gold fingers or spring contacts. Of course, other methods are also possible; this is not limited here. The fourth plate 414 can be connected to the contact part 420.

[0046] In this design, both the first plate 411 and the third plate 413 are connected to the fixing part 410, thus further improving the connection reliability between the fixing part 410 and the lens barrel 310.

[0047] In the above embodiments, the metal spring 421, the metal spring 422, and the metal ball 425 can all be connected to the fourth plate 414.

[0048] In another embodiment, the slide rail 120 can be a cylindrical structure.

[0049] In another alternative embodiment, the slide rail 120 may have a plurality of strip-shaped planes 122 arranged circumferentially thereon, the extending direction of the strip-shaped planes 122 being the same as the extending direction of the slide rail 120, and the grounding bracket 400 contacting at least one of the strip-shaped planes 122. In this embodiment, the slide rail 120 has a prismatic structure, and the slide rail 120 contacts the side surface of one of the prismatic structures. Since the side surface of the slide rail 120 is planar, this increases the contact area between the grounding bracket 400 and the slide rail 120, thereby further improving grounding reliability.

[0050] Optionally, the slide rail 120 can be a triangular prism, a square prism, or other structures, and this article does not impose any restrictions.

[0051] In another alternative embodiment, a conductive layer 500 may be provided on the circuit device 320, and the grounding bracket 400 can be electrically connected to the circuit device 320 through the conductive layer 500. In this solution, the conductive layer 500 can improve the reliability of the electrical connection between the grounding bracket 400 and the circuit device 320, thus helping to ensure the connection impedance between the grounding bracket 400 and the circuit device 320.

[0052] Optionally, the conductive layer 500 can be a structure such as conductive foam or rubber. Of course, the conductive layer 500 can also be other structures, which are not limited in this article.

[0053] In another alternative embodiment, the circuit device 320 may include a first circuit board 321 and a second circuit board 322. The first circuit board 321 is electrically connected to the aforementioned display screen 330, and here the first circuit board 321 may be a screen circuit board. The second circuit board 322 may be electrically connected to the eye-tracking device 340, and here the second circuit board 322 may be an eye-tracking circuit board. The grounding bracket 400 may be electrically connected to the second circuit board 322.

[0054] In this design, the eye-tracking circuit board is directly connected to the grounding bracket 400, so the static electricity on the eye-tracking circuit board can be directly released without the need for transfer through the screen circuit board, thereby further simplifying the structure of the near-eye display device.

[0055] The near-eye display device disclosed in this application can be a VR (virtual reality) device, such as VR glasses or VR headsets. Alternatively, it can be an AR (augmented reality) device, such as AR glasses or AR headsets. This application does not limit the specific type of near-eye display device.

[0056] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A near-eye display device, comprising: The application relates to a device shell (100), a light machine module (300) and a grounding support (400). The light machine module (300) comprises a lens barrel (310) and a circuit device (320), the circuit device (320) is connected with the lens barrel (310), the lens barrel (310) is in sliding connection with the device shell (100), and the lens barrel (310) can slide relative to the device shell (100). The grounding support (400) is fixedly arranged on the lens barrel (310), the grounding support (400) is electrically connected with the circuit device (320), the grounding support (400) moves relative to the device shell (100) along with the sliding of the lens barrel (310) and is in contact with the device shell (100), and the circuit device (320) is electrically conducted with the device shell (100) through the grounding support (400). The device shell (100) comprises a frame (110) and a sliding rail (120), the sliding rail (120) is fixedly arranged on the frame (110), the lens barrel (310) is in sliding connection with the sliding rail (120) along the extension direction of the sliding rail (120), and the lens barrel (310) can move relative to the frame (110) along the extension direction of the sliding rail (120).

2. The near-eye display device of claim 1, wherein, The lens barrel (310) drives the grounding support (400) to move relative to the sliding rail (120), and the grounding support (400) is in contact with the sliding rail (120); the circuit device (320) is electrically conducted with the frame (110) through the grounding support (400) and the sliding rail (120) in sequence. The lens barrel (310) comprises a barrel body (311) and at least one sliding block (312), the sliding block (312) is fixedly arranged on the barrel body (311) and located outside the barrel body (311), the circuit device (320) and the grounding support (400) are connected on the barrel body (311), the sliding block (312) is provided with a guide hole (3121), part of the sliding rail (120) is arranged in the guide hole (3121), and the sliding rail (120) is in sliding cooperation with the sliding block (312) through the guide hole (3121).

3. The near-eye display device of claim 2, wherein, At least one of the sliding blocks (312) is provided with a first avoiding hole (3122), the first avoiding hole (3122) is communicated with the guide hole (3121), and part of the grounding support (400) extends into the guide hole (3121) through the first avoiding hole (3122) and is in contact with the sliding rail (120). ​ 4. The near-eye display device of claim 2, wherein, The grounding support (400) comprises a fixing part (410) and a contact part (420), the fixing part (410) is connected with the contact part (420), the fixing part (410) is fixedly connected with the lens barrel (310), the fixing part (410) is electrically connected with the circuit device (320), the contact part (420) is arranged on the side of the fixing part (410) away from the lens barrel (310), and the contact part (420) is in contact with the slide rail (120).

5. The near-eye display device of claim 4, wherein, The contact part (420) is a metal elastic sheet (421) integrally formed with the fixing part (410), and the metal elastic sheet (421) is in sliding fit with the slide rail (120).

6. The near-eye display device of claim 5, wherein, The fixing part (410) is provided with a second avoiding hole (4101), the contact part (420) is arranged opposite to the second avoiding hole (4101), the contact part (420) protrudes from the fixing part (410) in the direction towards the slide rail (120), the contact part (420) has a first side wall (4211), a second side wall (4212), a third side wall (4213) and a fourth side wall (4214) arranged in a circumferential direction, the first side wall (4211) is arranged opposite to the third side wall (4213), the second side wall (4212) is arranged opposite to the fourth side wall (4214), the first side wall (4211) and the third side wall (4213) are connected with two side walls opposite to the second avoiding hole (4101) respectively, and the second side wall (4212) and the fourth side wall (4214) have gaps (4215) with the side walls of the second avoiding hole (4101).

7. The near-eye display device of claim 4, wherein, The contact part (420) is an elastic structural member, one end of the elastic structural member is fixedly connected with the fixing part (410), and the other end of the elastic structural member is in sliding fit with the slide rail (120).

8. The near-eye display device of claim 7, wherein, The contact part (420) comprises a metal spring (422) and a metal pressing sheet (423), one end of the metal spring (422) is fixedly connected with the fixing part (410), the other end of the metal spring (422) is fixedly connected with the metal pressing sheet (423), the surface of the side, away from the metal spring (422), of the metal pressing sheet (423) is in contact with the slide rail (120), and the metal pressing sheet (423) is in sliding fit with the slide rail (120).

9. The near-eye display device of claim 7, wherein, The contact part (420) is conductive foam (424).

10. The near-eye display device of claim 4, wherein, The contact part (420) is a metal ball (425), the fixing part (410) is provided with an embedding groove (4102), part of the metal ball (425) is located in the embedding groove (4102), and the metal ball (425) is in rolling fit with the slide rail (120).

11. The near-eye display device of claim 10, wherein, The slide rail (120) is provided with a matching sliding groove (121) extending in the extending direction of the slide rail (120), and part of the metal ball (425) is located in the matching sliding groove (121).

12. The near-eye display device of claim 4, wherein, The fixing part (410) comprises a first plate body (411), a second plate body (412), a third plate body (413) and a fourth plate body (414), the first plate body (411) is connected with the third plate body (413) through the second plate body (412), and the first plate body (411) and the third plate body (413) are both bent relative to the second plate body (412) and the bending directions are opposite; the fourth plate body (414) is connected with the third plate body (413) and the bending direction is opposite to that of the second plate body (412); The first plate body (411) and the third plate body (413) are both fixedly connected with the lens barrel (310), the first plate body (411) is electrically connected with the circuit device (320); the fourth plate body (414) is connected with the contact part (420).

13. The near-eye display device of claim 2, wherein, The slide rail (120) has a plurality of strip-shaped planes (122) arranged along the circumference thereof, the extension direction of the strip-shaped plane (122) is the same as that of the slide rail (120), and the grounding support (400) is in contact with at least one of the strip-shaped planes (122).

14. The near-eye display device of claim 1, wherein, The circuit device (320) comprises a first circuit board (321) and a second circuit board (322); the optical-mechanical module (300) further comprises a display screen (330) and an eye movement tracking device (340), both of which are arranged in the lens barrel (310), the first circuit board (321) is electrically connected with the display screen (330), the second circuit board (322) is electrically connected with the eye movement tracking device (340), and the grounding support (400) is electrically connected with the second circuit board (322).

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