Head-mounted display device

Abstract

The application discloses a head-mounted display device, and relates to the technical field of virtual reality, which comprises a display module, a distance detection component arranged on the side of the display module facing a human eye to detect the distance between the display module and the human eye, an interpupillary distance adjustment mechanism arranged on the side of the display module away from the human eye and drivingly connected with the display module, and a control component electrically connected with the distance detection component and the interpupillary distance adjustment mechanism to control the interpupillary distance adjustment mechanism to make the display module reciprocate along an interpupillary distance adjustment direction to adjust the distance between the display module and the human eye according to the detection result of the distance detection component. The technical scheme of the application solves the technical problem of low accuracy of the existing manual interpupillary distance adjustment mode.

Description

Technical Field

[0001] This invention relates to the field of virtual reality technology, and more particularly to a head-mounted display device. Background Technology

[0002] Head-mounted displays (HUDs) are devices that project images directly onto a user's eyes, widely used in virtual reality (VR), augmented reality (AR), and other fields. Traditional HUDs typically consist of a display screen, optical system, and support frame; users wear the device to view images on the screen. Interpupillary distance (IPD), a crucial parameter directly affecting visual comfort and immersion, can reduce visual distortion and eye strain. Traditional HUDs usually employ manual IPD adjustment, requiring users to adjust knobs or sliders on the device to change the distance between the display lenses and their eyes. However, manual IPD adjustment lacks precision, and users may not be able to accurately adjust to the optimal IPD position, thus affecting image clarity and comfort. Summary of the Invention

[0003] The main objective of this invention is to provide a head-mounted display device that addresses the technical problem of low precision in existing manual eye-distance adjustment methods.

[0004] To achieve the above objectives, embodiments of the present invention provide a head-mounted display device, the head-mounted display device comprising:

[0005] Display module;

[0006] A distance detection component is disposed on the side of the display module facing the human eye to detect the distance between the display module and the human eye;

[0007] An eye-distance adjustment mechanism is located on the side of the display module away from the human eye and is driven and connected to the display module; and

[0008] A control component is electrically connected to the distance detection component and the interpupillary distance adjustment mechanism to control the interpupillary distance adjustment mechanism according to the detection result of the distance detection component, so that the display module reciprocates along the interpupillary distance adjustment direction to adjust the distance between the display module and the human eye.

[0009] In one embodiment, the distance detection component includes:

[0010] A protective bracket, wherein the protective bracket is disposed at the periphery of the display module; and

[0011] A distance detection element is provided, wherein the protective bracket at least partially covers the distance detection element, and at least one distance detection element is provided along the circumference of the protective bracket.

[0012] In one embodiment, the interpupillary distance adjustment mechanism includes:

[0013] Install base plate;

[0014] A gear transmission assembly is disposed on the mounting base plate;

[0015] A transmission rod, wherein the gear transmission assembly is drivenly connected to the transmission rod to drive the transmission rod to rotate; and

[0016] An adjustment plate is provided, wherein the transmission rod is threadedly connected to the adjustment plate to drive the adjustment plate to move axially along the transmission rod, and the display module is disposed on the adjustment plate.

[0017] The transmission rod is provided with at least two rods; and / or the eye distance adjustment mechanism further includes a guide member, which passes through the adjustment plate and is slidably connected to the adjustment plate.

[0018] In one embodiment, the gear transmission assembly includes:

[0019] The drive gear is rotatably mounted on the mounting base plate;

[0020] A transmission gear, having at least one along the circumference of the driving gear, meshing with the driving gear; and

[0021] Driven gear, which meshes with the transmission gear, each transmission gear has a corresponding driven gear, each driven gear is connected to a transmission rod, and the transmission rod rotates synchronously with the driven gear.

[0022] In one embodiment, the interpupillary distance adjustment mechanism includes an interpupillary distance adjustment drive motor, which is driven and connected to the drive gear and electrically connected to the control component.

[0023] In one embodiment, the head-mounted display device further includes a cooling fan, and the eye distance adjustment drive motor drives the drive gear and the cooling fan.

[0024] In one embodiment, the head-mounted display device further includes an interpupillary distance adjustment mechanism. The mounting base is slidably disposed along the interpupillary distance adjustment direction. The interpupillary distance adjustment mechanism is slidably connected to the display module in the interpupillary distance adjustment direction and is drivenly connected to the display module in the interpupillary distance adjustment direction to drive the display module to move along the interpupillary distance adjustment direction.

[0025] In one embodiment, the interpupillary distance adjustment mechanism includes:

[0026] A toothed plate is disposed on the side of the display module, and the toothed plate is provided with a toothed rack along the interpupillary distance adjustment direction; and

[0027] A rotating column is rotatably disposed, and the outer peripheral surface of the rotating column is provided with teeth that mesh with the rack.

[0028] In one embodiment, two display modules are spaced apart along the interpupillary distance adjustment direction, and each display module is provided with one interpupillary distance adjustment mechanism.

[0029] In one embodiment, the head-mounted display device further includes a housing forming a mounting cavity with an opening, wherein the display module, the interpupillary distance adjustment mechanism, and the control components are disposed in the mounting cavity, and the display module is exposed through the opening.

[0030] Compared to existing technologies, the technical solution proposed in this invention, by setting a distance detection component on the display module, can automatically detect the distance between the display module and the wearer's eyes. This allows for the control of the interpupillary distance adjustment mechanism via a control component, automatically adjusting the distance between the display module and the wearer's eyes without manual intervention, significantly improving ease of use. Furthermore, the distance detection component can accurately measure the wearer's interpupillary distance and make fine adjustments based on the measurement results, improving the accuracy of the adjustment and ensuring the wearer receives the best visual experience. This provides a personalized visual experience for each wearer, meeting the needs of different individuals. Simultaneously, the distance detection component can monitor changes in the wearer's interpupillary distance in real time, such as wearer movement or changes in head posture, enabling rapid adjustments to maintain image clarity and reduce visual fatigue and discomfort caused by interpupillary distance mismatch, thus improving user comfort. Additionally, the automatic interpupillary distance adjustment prevents inaccurate adjustments due to improper user operation, reducing the risk of device damage due to misoperation. Attached Figure Description

[0031] 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.

[0032] Figure 1 This is a three-dimensional structural diagram of an embodiment of the head-mounted display device of the present invention;

[0033] Figure 2 This is a side view of an embodiment of the head-mounted display device of the present invention;

[0034] Figure 3 This is a partial structural schematic diagram of an embodiment of the head-mounted display device of the present invention, wherein the outer casing has been hidden;

[0035] Figure 4 This is a partial structural schematic diagram of an embodiment of the head-mounted display device of the present invention, wherein the outer shell and the display module have been hidden;

[0036] Figure 5 This is a schematic diagram of the structure of the display module in an embodiment of the head-mounted display device of the present invention.

[0037] Explanation of icon numbers:

[0038] 100. Display module;

[0039] 200. Distance detection assembly; 210. Protective bracket; 220. Distance detection element;

[0040] 300. Eye distance adjustment mechanism; 310. Mounting base plate; 320. Gear transmission assembly; 321. Drive gear; 322. Transmission gear; 323. Driven gear; 330. Transmission rod; 340. Adjustment plate; 350. Eye distance adjustment drive motor;

[0041] 400. Control components;

[0042] 500. Cooling fan;

[0043] 600. Interpupillary distance adjustment mechanism; 610. Gear plate; 620. Rotating column;

[0044] 700. Outer shell.

[0045] 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

[0046] 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 protection scope of the embodiments of the present invention.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0048] Furthermore, in the embodiments of this invention, descriptions involving "first," "second," etc., 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. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the embodiments of this invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0050] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope required by the embodiments of the present invention.

[0051] Head-mounted displays are display devices that project image information directly onto the wearer's eyes and are widely used in fields such as virtual reality and augmented reality. Traditional head-mounted displays typically include a display screen, optical system, and support structure, and the wearer views the images on the screen by wearing the device.

[0052] However, due to the different usage needs of different users, it is necessary to adjust the interpupillary distance, i.e., the distance between the display screen and the eyes, in order to obtain the best visual effect.

[0053] Traditional head-mounted display devices typically use a manual eye-distance adjustment method, where the wearer needs to adjust the adjustment knob or sliding mechanism on the device to change the distance between the display screen and their eyes.

[0054] However, the precision of manually adjusting eye spacing using the methods described above is limited. Wearers may not be able to accurately adjust to the optimal eye spacing, thus affecting image clarity and comfort. Furthermore, the adjustment process can be cumbersome for users unfamiliar with the device, impacting the user experience. Additionally, the adjustment process may require users to pause device use, interrupting the immersive experience and reducing user satisfaction.

[0055] In view of this, embodiments of the present invention provide a head-mounted display device. By setting a distance detection component on the display module, the distance between the display module and the wearer's eyes can be automatically detected, and the wearer's interpupillary distance can be accurately measured. Then, the interpupillary distance adjustment mechanism is controlled by a control component to automatically adjust the distance between the display module and the wearer's eyes, thereby improving the accuracy of interpupillary distance adjustment. The wearer does not need to manually intervene, which greatly improves the convenience of use.

[0056] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0057] like Figure 1 As shown, an embodiment of the present invention proposes a head-mounted display device, which includes:

[0058] Display module 100;

[0059] A distance detection component 200 is disposed on the side of the display module 100 facing the human eye to detect the distance between the display module 100 and the human eye;

[0060] An eye-distance adjustment mechanism 300 is located on the side of the display module 100 away from the human eye and is driven and connected to the display module 100; and

[0061] The control component 400 is electrically connected to the distance detection component 200 and the eye distance adjustment mechanism 300, so as to control the eye distance adjustment mechanism 300 according to the detection result of the distance detection component 200, so that the display module 100 reciprocates along the eye distance adjustment direction to adjust the distance between the display module 100 and the human eye.

[0062] In this embodiment, by setting a distance detection component 200 on the display module 100, the distance between the display module 100 and the wearer's eyes can be automatically detected. The control component 400 then controls the interpupillary distance adjustment mechanism 300 to automatically adjust the distance between the display module 100 and the wearer's eyes, eliminating the need for manual intervention and significantly improving ease of use. Furthermore, the distance detection component 200 can accurately measure the wearer's interpupillary distance and make fine adjustments based on the measurement results, improving the accuracy of the interpupillary distance adjustment and ensuring the wearer receives the best visual experience. This provides a personalized visual experience for each wearer, meeting the needs of different users. Simultaneously, the distance detection component 200 can monitor changes in the wearer's interpupillary distance in real time, such as wearer movement or changes in head posture, and can quickly make adjustments to maintain image clarity, reducing visual fatigue and discomfort caused by interpupillary distance mismatch and improving user comfort. In addition, the automatic interpupillary distance adjustment prevents inaccurate adjustments due to improper user operation, reducing the risk of device damage due to misoperation.

[0063] Specifically, the display module 100 is one of the key components of the VR device, used to convert digital images into a three-dimensional scene that appears realistic to the user. It can adopt the display structure commonly used in current VR devices, and there are no restrictions here.

[0064] The distance detection component 200 is used to detect the distance between the user's eye and the display module 100, and then adjusts the display module 100 to a suitable position relative to the user's eye based on the detected distance information to meet the usage needs of different wearers. As an option, the distance detection component 200 can be at least one of infrared ranging, ultrasonic ranging, structured light, and ToF sensors, and is not limited thereto.

[0065] The eye-distance adjustment mechanism 300 is used to drive the display module 100 to reciprocate along the eye-distance adjustment direction. That is, the eye-distance adjustment mechanism 300 can drive the display module 100 to move towards the human eye or drive the display module 100 to move away from the human eye, thereby adjusting the distance between the display module 100 and the human eye. As an optional method, the eye-distance adjustment mechanism 300 may include linear drive methods such as lead screw drive or electric telescopic, which are not limited here.

[0066] The control component 400 is used to electrically connect the distance detection component 200 and the interpupillary distance adjustment mechanism 300. It is understood that the distance detection component 200 transmits the detected distance information to the control component 400, and the control component 400 controls the interpupillary distance adjustment mechanism 300 to move the display module 100 to the optimal usage position for the wearer. Alternatively, the control component 400 can be any of a microcontroller or a control circuit board; no limitation is made here.

[0067] In one embodiment of the present invention, reference is made to... Figure 3 and Figure 5 The distance detection component 200 includes:

[0068] Protective bracket 210, the protective bracket 210 is disposed at the periphery of the display module 100; and

[0069] The distance detection element 220 is at least partially covered by the protective bracket 210, and at least one distance detection element 220 is provided along the circumference of the protective bracket 210.

[0070] Specifically, the distance detection component 200 includes a protective bracket 210 and a distance detection element 220. The protective bracket 210 is connected to the display module 100 and is used to mount and protect the distance detection element 220. The protective bracket 210 has a ring-shaped structure and is positioned along the periphery of the display module 100, thus reducing obstruction of the wearer's view of the display module 100. In one embodiment, the protective bracket 210 can be a circular ring or a square ring, etc., as long as it conforms to the shape of the display module 100; no limitation is made here. The distance detection element 220 is used to detect the distance between the user's eye and the display module and is electrically connected to the control component 400, such as wirelessly or via a wired connection. The distance detection element 220 is partially embedded in the protective bracket 210, reducing the area exposed on the outside of the protective bracket 210 and lowering the possibility of damage from impacts. In one embodiment, the distance detection element 220 may include an infrared camera. Understandably, the infrared camera captures an image of the position of the infrared LED reflected by the eyeball. The eye-tracking algorithm follows the image of the position of the reflected infrared LED, calculates the eye distance information, and sends the eye distance data to the control component 400.

[0071] In one embodiment of the present invention, reference is made to... Figure 3 and Figure 4 The eye distance adjustment mechanism 300 includes:

[0072] Mounting base plate 310;

[0073] Gear transmission assembly 320 is mounted on mounting base plate 310;

[0074] The transmission rod 330, the gear transmission assembly 320 is driven to the transmission rod 330 to drive the transmission rod 330 to rotate; and

[0075] Adjustment plate 340, transmission rod 330 is threadedly connected to adjustment plate 340 to drive adjustment plate 340 to move along the axial direction of transmission rod 330, display module 100 is disposed on adjustment plate 340;

[0076] The transmission rod 330 is provided with at least two rods; and / or the eye distance adjustment mechanism 300 also includes a guide member, which passes through the adjustment plate 340 and is slidably connected to the adjustment plate 340.

[0077] Specifically, the eye-distance adjustment mechanism 300 includes a mounting base plate 310, a gear transmission assembly 320, a transmission rod 330, and an adjustment plate 340. The mounting base plate 310 provides a mounting position for easy installation of the gear transmission assembly 320. The gear transmission assembly 320 provides driving force to rotate the transmission rod 330. The transmission rod 330 extends along the eye-distance adjustment direction, driving the adjustment plate 340 to reciprocate along the axial direction of the transmission rod 330, i.e., the eye-distance adjustment direction. Alternatively, the transmission rod 330 and the adjustment plate 340 are threaded together. When the transmission rod 330 rotates, its fixed position in the eye-distance adjustment direction drives the adjustment plate 340 to move along the same direction. The adjustment plate 340 mounts the display module 100, allowing the display module 100 to move synchronously with the adjustment plate 340.

[0078] To prevent the adjusting plate 340 from rotating synchronously with the transmission rod 330, two or more transmission rods 330 can be provided. Alternatively, in other embodiments, only one transmission rod 330 can be provided, along with a guide member extending along the eye-distance adjustment direction and passing through the adjusting plate 340. The guide member and the adjusting plate 340 are slidably connected. It is understood that the guide member can both restrict the rotation of the adjusting plate 340 with the transmission rod 330 and guide the movement of the adjusting plate 340. In another embodiment, the transmission rod 330 and the guide member can be provided simultaneously. In this case, the number of transmission rods 330 can be one or more, without limitation. As an optional feature, the guide member may include a guide rod.

[0079] In one embodiment of the present invention, reference is made to... Figure 3 and Figure 4 The gear transmission assembly 320 includes:

[0080] The drive gear 321 is rotatably mounted on the mounting base plate 310;

[0081] A transmission gear 322 is provided at least one along the circumference of the driving gear 321, and the transmission gear 322 meshes with the driving gear 321; and

[0082] Driven gear 323 meshes with transmission gear 322. Each transmission gear 322 is provided with a corresponding driven gear 323. Each driven gear 323 is connected to a transmission rod 330. The transmission rod 330 rotates synchronously with the driven gear 323.

[0083] Specifically, the gear assembly includes a driving gear 321, a transmission gear 322, and a driven gear 323. The driving gear 321 is rotatably mounted on the mounting base plate 310. The transmission gear 322 meshes with the driving gear 321, and the driven gear 323 meshes with the transmission gear 322. The driven gear 323 is coaxially connected to the transmission rod 330 and rotates synchronously. Thus, when the driving gear 321 rotates, the driven gear 323 rotates synchronously through the transmission gear 322, thereby driving the transmission rod 330 to rotate, which in turn drives the adjusting plate 340 to reciprocate along the eye distance adjustment direction.

[0084] It should be noted that each transmission rod 330 corresponds to a driven gear 323, and each driven gear 323 corresponds to a transmission gear 322. It is understood that the number of driven gears 323, the number of transmission gears 322, and the number of transmission rods 330 are the same. When multiple transmission rods 330 are provided, the arrangement of the transmission gears 322 ensures that the rotation directions of the multiple driven gears 323 are consistent, meaning that the rotation directions of the multiple transmission rods 330 are the same. Thus, the multiple transmission rods 330 can apply the same driving force to simultaneously drive the adjustment plate 340 closer to or further away from the viewer's eye.

[0085] In one embodiment of the present invention, reference is made to... Figure 4 The eye-distance adjustment mechanism 300 includes an eye-distance adjustment drive motor 350, which is driven and connected to a drive gear 321 and electrically connected to a control component 400. The eye-distance adjustment drive motor 350 provides driving force to the drive gear 321. In one embodiment, the head-mounted display device also includes a battery, which is mounted on an adjustment plate 340. The battery and the eye-distance adjustment motor are electrically connected, either directly via wires or via pogo pins; no limitation is made here. It should be noted that the length of the wires must be greater than the movement distance of the adjustment plate 340 along the eye-distance adjustment direction. In another embodiment, the control component 400 is electrically connected to the battery. In this embodiment, the eye-distance adjustment motor includes a bidirectional motor capable of switching between forward and reverse rotation according to a control signal. It is understood that the bidirectional motor can rotate forward or reverse under the control signal of the control component 400, thereby enabling the display module 100 to move towards or away from the human eye, thus adjusting the distance between the human eye and the display module 100.

[0086] In one embodiment of the present invention, reference is made to... Figure 4The head-mounted display device also includes a cooling fan 500, and an eye-tracking adjustment drive motor 350 drives a drive gear 321 and the cooling fan 500. The cooling fan 500 dissipates heat from the eye-tracking adjustment motor or other heat-generating components, preventing excessive temperature rise. Furthermore, the cooling fan 500 and the drive gear 321 are driven by the same eye-tracking drive motor, reducing the number of components and lowering operating costs and space requirements.

[0087] In one embodiment of the present invention, reference is made to... Figure 1 The head-mounted display device also includes an interpupillary distance (IPD) adjustment mechanism 600. A mounting base 310 is slidably disposed along the IPD adjustment direction. The IPD adjustment mechanism 600 is slidably connected to the display module 100 in the IPD adjustment direction and is also driven to drive the display module 100 to move along the IPD adjustment direction. Specifically, through the configured IPD adjustment structure, the display module 100 can be driven to move along the IPD adjustment direction, making the display module 100 match the wearer's pupils and improving the user experience. In one embodiment, the IPD adjustment mechanism 600 and the control component 400 are electrically connected. The distance detection component 200 can also detect IPD information and transmit it to the control component 400. The control component 400 controls the IPD adjustment mechanism 600 to work, thereby driving the display module 100 to move along the IPD adjustment direction, making the display module 100 match the wearer's pupils. This achieves automatic adjustment of the display module 100 in the IPD adjustment direction based on the IPD information, resulting in higher precision. Furthermore, the interpupillary distance adjustment mechanism 600 is slidably connected to the display module 100 in the interpupillary distance adjustment direction, which will not affect the position adjustment of the display module 100 in the interpupillary distance adjustment direction. The display module 100 always maintains the driving connection with the interpupillary distance adjustment mechanism 600 during the movement along the interpupillary distance adjustment direction, so that the position of the display module 100 in any position in the interpupillary distance adjustment direction can be adjusted in the interpupillary distance adjustment direction by means of the interpupillary distance adjustment mechanism 600.

[0088] In one embodiment, the distance detection component 200 includes an infrared camera that captures images of the eyeball and obtains the position of the pupil. An eye-tracking algorithm follows the pupil image, calculates the interpupillary distance information, and sends the interpupillary distance data to the control component 400 to control the interpupillary distance adjustment mechanism 600 to work, so that the display module 100 moves along the interpupillary distance adjustment direction to achieve the optimal interpupillary distance position for the user.

[0089] In one embodiment of the present invention, reference is made to... Figures 2 to 4 The interpupillary distance adjustment mechanism 600 includes:

[0090] A toothed plate 610 is disposed on the side of the display module 100, and a toothed rack is provided on the toothed plate 610 along the interpupillary distance adjustment direction; and

[0091] The rotating column 620 is rotatably configured, and its outer peripheral surface is provided with teeth that mesh with the rack.

[0092] Specifically, the interpupillary distance adjustment mechanism 600 includes a toothed plate 610 and a rotating column 620. The toothed plate 610 is located at the edge of the adjustment plate 340 or the edge of the display module 100, and extends along the interpupillary distance adjustment direction. The toothed plate 610 has multiple racks along the interpupillary distance adjustment direction. The rotating column 620 is rotatably configured and has teeth that engage with the racks. The rotation of the rotating column 620 drives the toothed plate 610 to move along the interpupillary distance adjustment direction, thereby adjusting the position of the display module 100 in the interpupillary distance adjustment direction. In one embodiment, the interpupillary distance adjustment mechanism 600 further includes an interpupillary distance adjustment drive motor, which is drivenly connected to the rotating column 620 to provide rotational power to the rotating column 620.

[0093] In one embodiment of the present invention, two display modules 100 are spaced apart along the interpupillary distance adjustment direction, and each display module 100 corresponds to an interpupillary distance adjustment mechanism 600. It can be understood that one display module 100 corresponds to the left eye, and one display module 100 corresponds to the right eye. Each display module 100 corresponds to an interpupillary distance adjustment mechanism 600, allowing for independent adjustment of the two display modules 100, resulting in higher adjustment precision and more convenient operation. Of course, in other embodiments, each display module 100 also corresponds to an interpupillary distance adjustment mechanism 300.

[0094] In one embodiment of the present invention, reference is made to... Figure 1 and Figure 2 The head-mounted display device also includes a housing 700, which forms a mounting cavity with an opening. The display module 100, the eye distance adjustment mechanism 300, and the control components 400 are disposed in the mounting cavity, with the display module 100 exposed through the opening. Specifically, the housing 700 protects the internal components, preventing damage and thus extending their lifespan. In one embodiment, the rotating column 620 is rotatably disposed inside the housing 700, and the mounting base plate 310 is slidably disposed inside the housing 700.

[0095] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the embodiments of the present invention. Any equivalent structural transformations made under the technical concept of the present invention using the description and drawings of the embodiments of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the embodiments of the present invention.

Claims

1. A head-mounted display device, characterized in that, The head-mounted display device includes: Display module; A distance detection component is disposed on the side of the display module facing the human eye to detect the distance between the display module and the human eye; An eye-distance adjustment mechanism is located on the side of the display module away from the human eye and is driven and connected to the display module; and A control component is electrically connected to the distance detection component and the eye distance adjustment mechanism to control the eye distance adjustment mechanism according to the detection result of the distance detection component, so that the display module reciprocates along the eye distance adjustment direction to adjust the distance between the display module and the human eye; The interpupillary distance adjustment mechanism includes: Install base plate; A gear transmission assembly is disposed on the mounting base plate; A transmission rod, wherein the gear transmission assembly is drivenly connected to the transmission rod to drive the transmission rod to rotate; and An adjustment plate is provided, wherein the transmission rod is threadedly connected to the adjustment plate to drive the adjustment plate to move axially along the transmission rod, and the display module is disposed on the adjustment plate. Wherein, the transmission rod is provided with at least two rods; and / or, the eye distance adjustment mechanism further includes a guide member, the guide member passing through the adjustment plate and slidably connected to the adjustment plate; The head-mounted display device further includes an interpupillary distance adjustment mechanism. The mounting base plate is slidably disposed along the interpupillary distance adjustment direction. The interpupillary distance adjustment mechanism is slidably connected to the display module in the interpupillary distance adjustment direction and is drivenly connected to the display module in the interpupillary distance adjustment direction to drive the display module to move along the interpupillary distance adjustment direction. The interpupillary distance adjustment mechanism includes: A toothed plate is disposed on the side of the display module, and the toothed plate is provided with a toothed rack along the interpupillary distance adjustment direction; and A rotating column is rotatably configured, and the outer peripheral surface of the rotating column is provided with teeth that mesh with the rack; The display modules are provided in two spaced apart along the interpupillary distance adjustment direction. Each display module is provided with an interpupillary distance adjustment mechanism to enable the two display modules to be adjusted independently. Each display module is provided with one interpupillary distance adjustment mechanism.

2. The head-mounted display device as described in claim 1, characterized in that, The distance detection component includes: A protective bracket, wherein the protective bracket is disposed at the periphery of the display module; and A distance detection element is provided, wherein the protective bracket at least partially covers the distance detection element, and at least one distance detection element is provided along the circumference of the protective bracket.

3. The head-mounted display device as described in claim 1, characterized in that, The gear transmission assembly includes: The drive gear is rotatably mounted on the mounting base plate; A transmission gear, having at least one along the circumference of the driving gear, meshing with the driving gear; and Driven gear, which meshes with the transmission gear, each transmission gear has a corresponding driven gear, each driven gear is connected to a transmission rod, and the transmission rod rotates synchronously with the driven gear.

4. The head-mounted display device as described in claim 3, characterized in that, The eye distance adjustment mechanism includes an eye distance adjustment drive motor, which is driven and connected to the drive gear and electrically connected to the control component.

5. The head-mounted display device as described in claim 4, characterized in that, The head-mounted display device also includes a cooling fan, and the eye distance adjustment drive motor drives the drive gear and the cooling fan.

6. The head-mounted display device as claimed in claim 1, characterized in that, The head-mounted display device also includes a housing that forms a mounting cavity with an opening, wherein the display module, the interpupillary distance adjustment mechanism, and the control components are disposed in the mounting cavity, and the display module is exposed through the opening.

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