Head-mounted display

Abstract

The embodiment of the present invention provides a head-mounted display, including: a left lens, a right lens, a lens mounting seat, a positioning bracket, and a display screen; the left lens and the right lens are sealed and connected to the upper part of the lens mounting seat, the positioning bracket is sealed and connected to the lower part of the lens mounting seat, a rubber expansion part is formed on the lens mounting seat and between the left lens and the right lens, and the rubber expansion part contracts or stretches along the pupil distance adjustment direction to drive the lens and the right lens to move closer or farther from each other; the lens mounting seat and / or the positioning bracket have a positioning part, and the positioning part is used to fix the lens mounting seat at the target pupil distance position; the display screen is fixed on the positioning bracket. The head-mounted display of the embodiment of the present invention can realize the function of single-screen pupil distance adjustment while ensuring dustproof sealing, and has the advantages of low cost and simple process.

Description

Technical Field

[0001] The present invention relates to the technical field of wearable intelligent devices, and in particular to a head-mounted display. Background Art

[0002] Smart wearable devices are becoming more and more popular, among which head-mounted displays are the best. The display screen of the head-mounted display can send optical signals to the user's eyes through the lens. Most head-mounted displays on the market can adjust the pupil distance and focal length to meet the needs of different people, making the user more flexible and comfortable to wear.

[0003] While the head-mounted display is equipped with an interpupillary distance adjustment function, it is also necessary to prevent dust and the like from entering the display screen and the lens to ensure the clarity of the display. The head-mounted display in the prior art mainly includes two left and right display screens, and cooperates with two left and right lens groups to form an integral module, so that dust cannot enter between the display screen and the lens. When adjusting the interpupillary distance, the interpupillary distance adjustment is achieved by moving the left display screen and the left lens to form an integral module, and the right display screen and the right lens to form an integral module.

[0004] The head mounted display in the above prior art needs to use two display screens, which is costly and has a complicated process. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a head mounted display, which can realize the function of single screen pupil distance adjustment while ensuring dustproof sealing, and has the advantages of low cost and simple process.

[0006] The embodiment of the present invention provides a head mounted display, comprising: a left lens, a right lens, a lens mounting seat, a positioning bracket, and a display screen;

[0007] The left lens and the right lens are sealed and connected to the upper part of the lens mounting seat, the positioning bracket is sealed and connected to the lower part of the lens mounting seat, and a rubber expansion part is formed on the lens mounting seat and located between the left lens and the right lens, and the rubber expansion part contracts or stretches along the pupil distance adjustment direction to drive the left lens and the right lens to move closer to or farther away from each other;

[0008] The lens mounting seat and / or the positioning bracket are provided with a positioning portion, and the positioning portion is used to fix the lens mounting seat at the target pupil distance position;

[0009] The display screen is fixed on the positioning bracket.

[0010] Furthermore, the lens mount and the positioning bracket can slide relative to each other in the pupil distance adjustment direction, and a plurality of positioning parts are provided on the positioning bracket, and the positioning parts are used to position the lens mount so that the left lens and the right lens can be fixed at the target pupil distance position.

[0011] Furthermore, the lens mounting seat is entirely an elastic rubber piece, and the area between the left lens and the right lens forms the rubber expansion and contraction portion.

[0012] Optionally, the lens mounting seat includes a mounting portion and the rubber expansion portion;

[0013] The mounting portion comprises: a rigid base and a sealing member; the sealing member is arranged between the rigid base and the left lens and / or the right lens, and is used to seal the gap between the left lens and / or the right lens and the lens mounting seat.

[0014] Furthermore, a plurality of card slots are formed on the positioning bracket, the card slots forming the positioning portion, the plurality of card slots are arranged sequentially along the pupil distance adjustment direction, the lens mounting seat includes a card strip, and the card slots cooperate with the card strip to achieve positioning between the lens mounting seat and the positioning bracket.

[0015] Furthermore, the slot wall between two adjacent slots is an elastic rubber piece; and / or the clip strip is an elastic rubber piece.

[0016] Optionally, the positioning bracket is entirely made of an elastic rubber member.

[0017] Furthermore, a guide rail is provided on the lens mounting seat along the pupil distance adjustment direction, and a guide groove matching with the guide rail is provided on the positioning bracket;

[0018] And / or, a guide groove is provided on the lens mounting seat along the pupil distance adjustment direction, and a guide rail matching with the guide groove is provided on the positioning bracket.

[0019] Furthermore, the guide rail and the guide groove are in contact with each other through rubber elastic extrusion.

[0020] Furthermore, a friction-reducing layer is provided between the guide rail and the guide groove.

[0021] Furthermore, it also includes a screen bracket, and the display screen is fixedly mounted on the positioning bracket through the screen bracket.

[0022] The head mounted display provided by the embodiment of the present invention mounts the left lens and the right lens through the lens mounting seat, and the pupil distance is adjusted by the expansion and contraction of the rubber expansion part on the lens mounting seat, and the position of the adjusted lens mounting seat is fixed by the positioning part on the positioning bracket. When adjusting the pupil distance, it is only necessary to drive the rubber expansion part to change the distance between the left lens and the right lens, that is, the pupil distance is changed, and then the lens mounting seat is fixed by the positioning part to fix the required pupil distance position. The left lens and the right lens are sealedly connected to the lens mounting seat, and the lens mounting seat is sealedly connected to the positioning bracket. During the pupil distance adjustment process, the expansion and contraction of the rubber expansion part of the lens mounting seat is deformed along the pupil distance adjustment direction, and the deformation in other directions is small. The display screen and the lens can maintain a sealed state, and dust can be effectively prevented from entering between the display screen and the lens. Therefore, the single-screen pupil distance adjustable function of the head mounted display is realized, and there is no need to set up two display screens. It has the advantages of low cost, simple operation and simple process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a head mounted display provided by an embodiment of the present invention;

[0025] Figure 2 An exploded view of a head mounted display provided by an embodiment of the present invention;

[0026] Figure 3 An axonometric cross-sectional view of a head mounted display provided by an embodiment of the present invention;

[0027] Figure 4 A side cross-sectional view of a head mounted display provided by an embodiment of the present invention;

[0028] Figure 5 for Figure 4 The state diagram of the head-mounted display after the pupil distance is reduced;

[0029] Figure 6 for Figure 4 A diagram of the state of the head-mounted display after the pupil distance is enlarged. DETAILED DESCRIPTION

[0030] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0031] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but rather use differences in components' functions as the criteria for distinction.

[0032] The word "including" mentioned throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, the term "coupling" or "electrically connected" herein includes any direct and indirect electrical coupling means. Therefore, if the text describes a first device coupled to a second device, it means that the first device can be directly electrically coupled to the second device, or indirectly electrically coupled to the second device through other devices or coupling means. The subsequent description of the specification is a preferred embodiment of the present invention, but the description is for the purpose of illustrating the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined as defined in the attached claims.

[0033] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity or system including the element.

[0035] Figure 1 A schematic diagram of the structure of a head mounted display provided by an embodiment of the present invention; Figure 2 An exploded view of a head mounted display provided by an embodiment of the present invention; Figure 3 An axonometric cross-sectional view of a head mounted display provided by an embodiment of the present invention; Figure 4 A side cross-sectional view of a head mounted display provided by an embodiment of the present invention. Figure 1-Figure 4As shown, the head mounted display provided in this embodiment includes: a left lens 10 , a right lens 20 , a lens mounting seat 30 , a positioning bracket 40 , and a display screen 50 .

[0036] It should be noted that the head mounted display in this embodiment can be a device worn on the head, such as glasses, helmets, masks, etc. The user can watch movies, play games, or study through the head mounted display. The display screen 50 in the embodiment can be an LCD screen or a CRT display screen, etc., which is not particularly limited in this embodiment.

[0037] The left lens 10 and the right lens 20 are sealed and connected to the upper part of the lens mounting seat 30, and the positioning bracket 40 is sealed and connected to the lower part of the lens mounting seat 30. Figure 2 As shown, the left lens 10 may include a left lens 11 and a left lens barrel 12, and the left lens 10 is installed on the end of the left lens barrel 12 away from the lens mounting seat 30. The right lens 20 may include a right lens 21 and a right lens barrel 22, and the right lens 21 is installed on the end of the right lens barrel 22 away from the lens mounting seat 30.

[0038] Specifically, one end of the left lens barrel 12 away from the left lens 11 is sealed and connected to the lens mount 30, and one end of the right lens barrel 22 away from the right lens 21 is sealed and connected to the lens mount 30. For example, the lens mount 30 can be connected to the left lens barrel 12 and the right lens barrel 22, and then the lens mount 30 and the left lens barrel 12 and the right lens barrel 22 can be sealed by elastic sealing members such as rubber. Alternatively, the lens mount 30 can be directly integrally injection molded with the left lens barrel 12 and the right lens barrel 22, and there is no gap between the lens mount 30 and the left lens barrel 12 and the right lens barrel 22, thereby ensuring sealing.

[0039] Figure 5 for Figure 4 The state diagram of the head-mounted display after the pupil distance is reduced; Figure 6 for Figure 4 The state diagram of the head-mounted display after the pupil distance is enlarged. Figure 4 As shown, the portion of the lens mounting seat 30 located between the left lens 10 and the right lens 20 forms a rubber expansion portion 31, and the rubber expansion portion 31 can be adjusted along the pupil distance adjustment direction ( Figure 4 The rubber expansion part 31 can be made of a soft silicone material, which can be extremely elastic and not easy to break after long-term or high-frequency deformation. The mechanical deformation simulation can be performed according to the actual situation to select the required material. It should be noted that in this embodiment, the part on the lens mounting seat 30 and located between the left lens 10 and the right lens 20 forms the rubber expansion part 31, which does not exclude that other positions on the lens mounting seat 30 are also made of rubber.

[0040] When using, Figure 5 As shown in the figure, when the pupil distance needs to be reduced, the user can directly squeeze the left lens 10 and the right lens 20 closer to each other in the pupil distance adjustment direction, and the rubber expansion part 31 shrinks, and the left lens 10 and the right lens 20 are as shown in the figure. Figure 5 As shown in the figure, the pupils move closer to each other (the broad arrow in the figure indicates the direction of force), and the pupil distance decreases. Figure 6 As shown in FIG. 1 , when the interpupillary distance needs to be increased, the user can directly pull the left lens 10 and the right lens 20 away from each other in the interpupillary distance adjustment direction (the broad arrow in the figure indicates the force direction), and the rubber expansion portion 31 is extended, and the left lens 10 and the right lens 20 are as shown in FIG. Figure 6 As shown, the pupils are moved away from each other, thereby increasing the pupil distance.

[0041] The lens mount 30 and / or the positioning bracket 40 may have a positioning portion 41, and the positioning portion 41 is used to fix the lens mount 30 at the target pupil distance position. The lens mount 30 is fixed at the target pupil distance position by the positioning portion 41 to avoid rebounding under the action of the rubber expansion portion 31 after the pupil distance is adjusted, thereby preventing the pupil distance position from being fixed and affecting the user experience. Among them, the target pupil distance position is the pupil distance position selected according to the needs of the user.

[0042] In addition, the display screen 50 is fixed on the positioning bracket 40. An observation channel is formed between the lens and the display screen 50, and the channel is always kept sealed. When using the head-mounted display, the user can view the image or picture displayed on the display screen 50 through the lens. Furthermore, the head-mounted display of this embodiment may also include a screen bracket 60, and the display screen 50 may be fixedly mounted on the positioning bracket 40 through the screen bracket 60. Specifically, the display screen 50, the screen bracket 60, and the positioning bracket 40 may be connected by dispensing, or by snap-on connection, etc., which is not limited in this embodiment.

[0043] The head mounted display provided by the embodiment of the present invention mounts the left lens 10 and the right lens 20 through the lens mounting seat 30, and the pupil distance is adjusted by the expansion and contraction of the rubber expansion part 31 on the lens mounting seat 30, and the position of the adjusted lens mounting seat 30 is fixed by the positioning part 41 on the positioning bracket 40. When the pupil distance is adjusted, it is only necessary to drive the rubber expansion part 31 to change the distance between the left lens 10 and the right lens 20, that is, the pupil distance is changed, and then the lens mounting seat 30 is fixed by the positioning part 41 to fix the required pupil distance position. The left lens 10 and the right lens 20 are sealedly connected to the lens mounting seat 30, and the lens mounting seat 30 is sealedly connected to the positioning bracket 40. In the process of pupil distance adjustment, the expansion and contraction of the rubber expansion part 31 of the lens mounting seat 30 is deformed along the pupil distance adjustment direction, and the deformation in other directions is small. The display screen and the lens can maintain a sealed state, which can effectively prevent dust from entering between the display screen and the lens. Dynamic sealing is achieved while the pupil distance is adjustable, thereby realizing the single-screen pupil distance adjustable function of the head mounted display, without setting two display screens, and having the advantages of low cost, simple operation and simple process.

[0044] In the above embodiment, if Figure 3 As shown, specifically, the lens mounting seat 30 and the positioning bracket 40 can slide relatively in the pupil distance adjustment direction. In this embodiment, a guide rail 32 can be provided on the lens mounting seat 30 along the pupil distance adjustment direction, and a guide groove 42 matching with the guide rail can be provided on the positioning bracket 40; and / or, a guide groove is provided on the lens mounting seat 30 along the pupil distance adjustment direction, and a guide rail matching with the guide groove is provided on the positioning bracket 40.

[0045] by Figure 2 and Figure 3 As shown, a guide groove is provided on the positioning bracket 40, and a guide rail 32 is provided on the lens mounting seat 30 as an example, and the structure is further optimized. Specifically, the guide groove may include two, and can be symmetrically arranged on two opposite sides of the positioning bracket 40. The length direction of the guide groove 42 on the positioning bracket 40 can be parallel to the pupil distance adjustment direction. The upper end of the guide groove 42 can be bent toward the inside of the guide groove 42 at a certain inclination angle to form an elastic retaining portion 421. The elastic retaining portion 421 clamps the guide rail 32 on the lens mounting seat 30, which can facilitate the installation of the guide rail 32 and is conducive to keeping the guide rail 32 in the guide groove 42. It is not easy to fall out of the guide groove 42, thereby ensuring the stability of the structure.

[0046] The guide rail and the guide groove can be in contact with each other through elastic extrusion of rubber. Specifically, the elastic retaining portion 421 can be a rubber part, or the guide rail and the guide groove themselves are rubber parts, and when they are matched, the whole is in elastic extrusion contact. Alternatively, the lens mount 30 and the positioning bracket 40 are all rubber parts as a whole, and the stiffness of each position of the lens mount 30 and the positioning bracket 40 can be the same or different, and can be specifically deployed according to the functional requirements of different parts. For example, in areas with high elasticity requirements (such as the rubber telescopic part 31 on the lens mount 30), the stiffness can be slightly lower, and in areas with high guidance requirements (such as the guide rail 32 on the lens mount 30 and the guide groove 42 on the positioning bracket 40), the stiffness can be slightly higher.

[0047] The guide rail and the guide groove are in contact with each other through elastic extrusion of rubber, which can ensure the sealing between the guide rail and the guide groove. Therefore, even during the relative sliding process of the lens mounting seat 30 and the positioning bracket 40, dust is not easy to enter between the display screen and the lens from the contact point between the two, thereby ensuring the display effect of the display.

[0048] In addition, further, a friction-reducing layer (not shown in the figure) may be provided between the guide rail and the guide groove. Specifically, the friction-reducing layer may be provided on the groove wall of the guide groove, or on the outer surface of the guide rail, or the friction-reducing layer may be provided on both the groove wall of the guide groove and the outer surface of the guide rail. The friction-reducing layer may be a modified PE (polyethylene) friction-reducing layer, a flocking friction-reducing layer, etc. By providing the friction-reducing layer between the guide rail and the guide groove, on the one hand, the friction resistance between the lens mounting seat 30 and the positioning bracket 40 during the relative sliding process can be reduced, and on the other hand, the wear between the lens mounting seat 30 and the positioning bracket 40 can be reduced, which is beneficial to improving the service life of the head-mounted display.

[0049] Of course, when the lens mounting seat 30 is provided with a guide groove along the pupil distance adjustment direction, and the positioning bracket 40 is provided with a guide rail that matches the guide groove, the structure of the guide rail and the guide groove in this form can also be the same as that of the lens mounting seat 30. Figure 2 and Figure 3 The method shown is the same and will not be repeated here.

[0050] It is understandable that the relative sliding of the lens mounting seat 30 and the positioning bracket 40 can also be achieved through a sliding sleeve and a sliding column, that is, a sliding column can be provided on the lens mounting seat 30 along the pupil distance adjustment direction, and a sliding sleeve matching the sliding column is provided on the positioning bracket 40; and / or, a sliding sleeve is provided on the lens mounting seat 30 along the pupil distance adjustment direction, and a sliding column matching the guide groove is provided on the positioning bracket 40. There are many ways to achieve relative sliding between the lens mounting seat 30 and the positioning bracket 40, and this embodiment is not particularly limited here.

[0051] A plurality of positioning parts 41 may be provided on the positioning bracket 40, and the positioning parts 41 are used to position the lens mounting seat 30 so that the left lens 10 and the right lens 20 can be fixed at the target pupil distance position. Specifically, the plurality of positioning parts 41 may be provided at different pupil distance positions in the pupil distance adjustment direction, and a fixing structure for cooperating with the positioning parts 41 is provided on the lens mounting seat 30 accordingly. When the user pulls the left lens 10 and the right lens 20 to adjust the pupil distance to a predetermined position, the lens mounting seat 30 can be passed through the appropriate positioning part 41 on the positioning bracket 40. Subsequently, the user can use the pupil distance that suits him / her for viewing.

[0052] In the above embodiment, the lens mounting seat 30 can be an elastic rubber member as a whole, and the area between the left lens 10 and the right lens 20 forms the above-mentioned rubber expansion portion 31. In this embodiment, the lens mounting seat 30 is an elastic rubber member as a whole, for example, the lens mounting seat 30 can be a soft silicone thin layer structure, and the position where the left lens 10 and the right lens 20 are mounted on the lens mounting seat 30 is a mounting portion 33, and the mounting portion 33 can be cylindrical, and the cylindrical mounting portion 33 wraps the lower outer cylinder wall of the left lens 10 and the right lens 20. The lens mounting seat 30 is an elastic rubber member as a whole, which can better ensure the sealing between the lens mounting seat 30 and the lens, and between the lens mounting seat 30 and the positioning bracket 40, and at the same time, the manufacturing process is also relatively simple.

[0053] In other embodiments, optionally, the lens mounting seat 30 may include a mounting portion 33 and a rubber telescopic portion 31. The mounting portion 33 may include: a rigid substrate and a seal; the seal may be disposed between the rigid substrate and the left lens 10 and / or the right lens 20, and is used to seal the gap between the left lens 10 and / or the right lens 20 and the lens mounting seat 30. Specifically, the seal may be an elastic seal such as a rubber member, or a flexible seal such as a flexible seal made of materials such as aramid fiber and carbon fiber. The seal may be disposed between the rigid substrate and the left lens 10, or between the rigid substrate and the right lens 20, or between the rigid substrate and the left lens 10, and between the rigid substrate and the right lens 20. Similar to the above embodiment, the mounting portion 33 in this embodiment may also be cylindrical. The seal may be disposed on the inner side wall of the rigid substrate, and the left lens 10 and the right lens 20 may contact the mounting portion 33 through the seal.

[0054] like Figure 2 and Figure 3As shown, a plurality of card slots may be formed on the positioning bracket 40, and the card slots form the above-mentioned positioning portion 41, and the plurality of card slots are arranged in sequence along the pupil distance adjustment direction, and the lens mounting seat 30 includes a card strip 34, and the edge of the lens mounting seat 30 can be folded to form the card strip 34, and the card slots cooperate with the card strip 34 to realize the positioning between the lens mounting seat 30 and the positioning bracket 40. In this embodiment, the plurality of card slots are divided into two groups, and the two groups of card slots are symmetrically arranged at the two side ends of the positioning bracket 40, and each group of card slots can be arranged in a shutter structure. During the pupil distance adjustment process, the lens mounting seat 30 slides on the positioning bracket 40, and the card strip on the lens mounting seat 30 passes over other card slots that do not need to be held and is inserted into the target card slot.

[0055] Furthermore, the groove wall between two adjacent card slots may be an elastic rubber part; or the card strip may be an elastic rubber part; or the groove wall and the card strip between two adjacent card slots may be elastic rubber parts. Thus, it is convenient to pass over non-target card slots that do not need to be clamped during the pupil distance adjustment process. In addition, when the groove wall between two adjacent card slots is an elastic rubber part, when in the positioning state, other rubber groove walls may also squeeze the card strip, thereby achieving further sealing and improving the sealing performance.

[0056] Furthermore, the left lens 10 and the right lens 20 can be extended into a shape matching the lens mounting seat 30, and the lower part is stacked with the lens mounting seat 30. The parts of the left lens 10 and the right lens 20 that overlap with the edge of the lens mounting seat 30 can together form the above-mentioned clamping strip 34. For details, please refer to the attached Figure 4-Figure 6 In this case, the lens structure of the clamping strip may be a rigid member, and the clamping strip at the lens mounting seat 30 may be a rigid member or an elastic rubber member.

[0057] Preferably, the positioning bracket 40 can also be made of an elastic rubber member as a whole. Similar to the lens mounting seat 30, when the positioning bracket 40 is made of an elastic rubber member as a whole, such as a silicone member, its manufacturing process is simple and the sealing effect is good.

[0058] The head-mounted display provided by the above-mentioned embodiments of the present invention can be used to realize different effects such as virtual reality (VR), augmented reality (AR), mixed reality (MR), etc. The pupil distance is easy to adjust, and it can be suitable for different people to use, with good flexibility.

[0059] It should be noted that although the specific embodiments of the present invention are described in detail in conjunction with the accompanying drawings, it should not be understood as limiting the scope of protection of the present invention. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the scope of protection of the present invention.

[0060] The examples of the embodiments of the present invention are intended to concisely illustrate the technical features of the embodiments of the present invention so that those skilled in the art can intuitively understand the technical features of the embodiments of the present invention, and are not intended to be improper limitations of the embodiments of the present invention.

[0061] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and those skilled in the art may understand and implement them without inventive effort.

[0062] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A head mounted display, characterized in that: include: Left lens, right lens, lens mounting seat, positioning bracket, display screen; The left lens and the right lens are sealed and connected to the upper part of the lens mounting seat through elastic sealing members, the positioning bracket is sealed and connected to the lower part of the lens mounting seat, and a rubber expansion part is formed on the lens mounting seat and located between the left lens and the right lens, and the rubber expansion part contracts or stretches along the pupil distance adjustment direction to drive the left lens and the right lens to move closer to or farther away from each other; The lens mounting seat and / or the positioning bracket are provided with a positioning portion, and the positioning portion is used to fix the lens mounting seat at the target pupil distance position; The display screen is fixed on the positioning bracket.

2. The head mounted display according to claim 1, wherein: The lens mounting seat and the positioning bracket can slide relatively in the pupil distance adjustment direction. A plurality of positioning parts are provided on the positioning bracket, and the positioning parts are used to position the lens mounting seat so that the left lens and the right lens can be fixed at the target pupil distance position.

3. The head mounted display according to claim 1, wherein: The lens mounting seat is an elastic rubber piece as a whole, and the area between the left lens and the right lens forms the rubber expansion and contraction part.

4. The head mounted display according to claim 1, wherein: The lens mounting seat comprises a mounting portion and the rubber expansion portion; The mounting portion comprises: a rigid base and a sealing member; the sealing member is arranged between the rigid base and the left lens and / or the right lens, and is used to seal the gap between the left lens and / or the right lens and the lens mounting seat.

5. The head mounted display according to claim 2, wherein: A plurality of card slots are formed on the positioning bracket, the card slots forming the positioning portion, the plurality of card slots are arranged in sequence along the pupil distance adjustment direction, the lens mounting seat comprises a card strip, and the card slots cooperate with the card strip to achieve positioning between the lens mounting seat and the positioning bracket.

6. The head mounted display according to claim 5, characterized in that: The slot wall between two adjacent slots is an elastic rubber piece; and / or the clip strip is an elastic rubber piece.

7. The head mounted display according to claim 1, wherein: The positioning bracket is an elastic rubber piece as a whole.

8. The head mounted display according to any one of claims 1 to 7, characterized in that: The lens mounting seat is provided with a guide rail along the pupil distance adjustment direction, and the positioning bracket is provided with a guide groove matching with the guide rail; And / or, a guide groove is provided on the lens mounting seat along the pupil distance adjustment direction, and a guide rail matching with the guide groove is provided on the positioning bracket.

9. The head mounted display according to claim 8, characterized in that: The guide rail and the guide groove are in contact with each other through rubber elastic extrusion.

10. The head mounted display according to claim 8, characterized in that: A friction reducing layer is provided between the guide rail and the guide groove.

11. The head mounted display according to claim 1, wherein: It also includes a screen bracket, and the display screen is fixedly mounted on the positioning bracket through the screen bracket.

Images