Head-mounted display device

Abstract

The invention discloses a head-mounted display device, which comprises a rear shell, a front shell, an optical machine module and two first camera modules, and is characterized in that the front shell and the rear shell jointly define a mounting space; the ray machine module is arranged in the mounting space and comprises a ray machine bracket and two ray machine components mounted on the ray machine bracket; the two first camera modules are arranged on the two opposite sides of the ray machine support respectively and arranged on the side, facing the front shell, of the ray machine support, and parts of the two first camera modules protrude out of the front shell. According to the technical scheme, equipment miniaturization can be achieved, and the field angle of the camera shooting assembly is increased.

Description

Technical Field

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

[0002] Virtual Reality (VR) and Augmented Reality (AR) technologies can give users a visual experience that is almost the same as the real scene, and are currently a hot research field. In order to enable users to better experience VR and AR technologies, VR and AR are usually displayed using head-mounted display devices.

[0003] At present, the left and right optical-mechanical modules usually adopt an independent split structure, that is, the left and right optical-mechanical modules each have an independent optical-mechanical bracket that carries the required optical-mechanical optical devices, which are then fixed on another optical-mechanical bracket structure, and then the camera component is installed, resulting in a large space occupied by the optical-mechanical module and a limited field of view of the camera component. Summary of the invention

[0004] The main purpose of the present invention is to provide a head-mounted display device, aiming to achieve miniaturization of the device and increase the field of view of the camera component.

[0005] To achieve the above-mentioned object, the head mounted display device proposed by the present invention comprises:

[0006] Back shell;

[0007] A front shell, which is enclosed together with the rear shell to form an installation space;

[0008] an optical-mechanical module, arranged in the installation space, comprising an optical-mechanical bracket and two optical-mechanical components installed on the optical-mechanical bracket; and

[0009] The two first camera modules are disposed on opposite sides of the optical machine bracket and on a side of the optical machine bracket facing the front shell, and are partially protruded from the front shell.

[0010] Optionally, the front shell includes a frame portion and a shielding portion spliced ​​to each other, the shielding portion is arranged on the front side of the optical-mechanical assembly, and a through hole is provided on the shielding portion, and the lens of the first camera module extends out of the front shell through the through hole.

[0011] Optionally, the optical machine bracket includes a middle part and two end parts, a rib is provided between any one of the end parts and the middle part, the optical machine assembly is fixed to the rib, the first camera module is installed at the end parts, and the second camera module is installed at the middle part.

[0012] Optionally, the second camera module is bonded to the middle portion.

[0013] Optionally, the middle portion is provided with a mounting groove, and one end of the second camera module close to the middle portion is inserted into the mounting groove and is bonded and fixed to the inner wall of the mounting groove.

[0014] Optionally, the first camera module includes a camera and a shell cover, the camera is installed in the shell cover, and the shell cover is fixed to the optical machine bracket by fasteners.

[0015] Optionally, the camera is bonded inside the housing cover.

[0016] Optionally, the first camera module includes a camera and a shell cover, and the camera is bonded inside the shell cover; and the optical-mechanical assembly is bonded to the optical-mechanical bracket.

[0017] Optionally, a fixing groove is formed on the optical-mechanical bracket, and the upper side of the optical-mechanical assembly is inserted into the fixing groove and is bonded and fixed to the inside of the fixing groove.

[0018] Optionally, the optical-mechanical support is made of magnesium-lithium alloy material; and / or,

[0019] The front shell and / or the rear shell are made of plastic titanium material.

[0020] The front shell and the rear shell in the technical solution of the present invention are enclosed together to form an installation space; the optical machine module is arranged in the installation space, and the optical machine module includes an optical machine bracket and two optical machine components, and the two optical machine components are arranged at intervals on the left and right sides of the optical machine bracket, thereby reducing the number of optical machine brackets in the prior art, which can not only simplify the installation process, but also reduce the installation space of the optical machine module, thereby realizing the miniaturization of the head-mounted display device. In addition, the number of optical machine brackets in the prior art is reduced, and the distance between the optical machine bracket and the front shell and / or the rear shell can also be reduced, so that when the two first camera modules are installed on the optical machine bracket, they can be partially protruded from the front shell without the help of other structures, further reducing the installation space of the head-mounted display device and realizing the miniaturization of the device. The first camera module is partially protruded from the front shell, thereby reducing the occlusion of the field of view of the first camera module by the front shell, thereby expanding the field of view of the first camera module, which helps to improve the overall performance of the head-mounted display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a head mounted display device of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure inside the head mounted display device;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of an optical machine module in a head mounted display device at an angle;

[0025] Figure 4 for Figure 1 A schematic diagram of the structure of the optical machine module in the head mounted display device from another angle;

[0026] Figure 5 for Figure 1 An exploded view of the optical-mechanical module in the head-mounted display device.

[0027] Description of Figure Numbers:

[0028] Label name Label name 100 Head-mounted display devices 132 Optical Mechanical Components 110 Frames 133 Central 111 Back shell 134 end 112 Front shell 135 Ribs 113 Installation space 136 Mounting slot 114 Frame 137 Fixed slot 115 Blocking part 140 First camera module 120 Temple 141 camera 130 Optical machine module 142 Shell cover 131 Optical machine bracket

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The present invention provides a head-mounted display device 100, which may be an AR device, a VR device, etc.

[0034] In the embodiment of the present invention, Figure 1 and Figure 2 As shown, the head-mounted display device 100 includes a rear shell 111, a front shell 112, an optical machine module 130 and two first camera modules 140. The front shell 112 and the rear shell 111 together enclose an installation space 113; the optical machine module 130 is arranged in the installation space 113, including an optical machine bracket 131 and two optical machine components 132 installed on the optical machine bracket 131; the two first camera modules 140 are arranged on opposite sides of the optical machine bracket 131, and are arranged on the side of the optical machine bracket 131 facing the front shell 112, and are partially protruding from the front shell 112.

[0035] Specifically, the optical machine module 130 and the first camera module 140 are usually arranged in the frame 110 of the head-mounted display device 100, and the temple 120 is rotatably installed on one side of the frame 110. In the prior art, the left and right optical machine modules 130 usually adopt an independent split structure, that is, the left and right optical machine components 132 are independently installed on the corresponding optical machine bracket 131, and then the left and right optical machine modules 130 are jointly installed on the general mounting bracket in the head-mounted display device 100, and the camera module is also installed on the general mounting bracket accordingly. There are many installation processes, and the optical machine bracket 131 or the mounting bracket needs to occupy more installation space 113, resulting in a large overall volume of the head-mounted display device 100, which is not conducive to the miniaturization of the head-mounted display device 100.

[0036] Therefore, in this solution, an integrated optical machine module 130 is used. The optical machine module 130 is arranged in the installation space 113. The optical machine module 130 includes an optical machine bracket 131 and two optical machine components 132. The two optical machine components 132 are arranged at intervals on the left and right sides of the optical machine bracket 131, thereby reducing the number of optical machine brackets 131 in the prior art, which can not only simplify the installation process, but also reduce the installation space 113 of the optical machine module 130, thereby realizing the miniaturization of the head-mounted display device 100. In addition, the number of optical machine brackets 131 in the prior art is reduced, and the distance between the optical machine bracket 131 and the front shell 112 and / or the rear shell 111 can also be reduced, so that when the two first camera modules 140 are installed on the optical machine bracket 131, they can be partially protruded from the front shell 112 without the help of other structures, further reducing the installation space 113 of the head-mounted display device 100, and realizing the miniaturization of the device. The first camera module 140 is partially protruded from the front shell 112, thereby reducing the obstruction of the field of view of the first camera module 140 caused by the front shell 112, thereby expanding the field of view of the first camera module 140, which helps to improve the overall performance of the head-mounted display device 100.

[0037] In one embodiment, the front shell 112 includes a frame portion 114 and a shielding portion 115 that are spliced ​​together. The shielding portion 115 is provided at the front side of the optical-mechanical assembly 132. The shielding portion 115 is provided with a through hole, and the lens of the first camera module 140 extends out of the front shell 112 through the through hole. Specifically, the frame portion 114 is used to connect with the rear shell 111 and / or the optical machine to form the front contour of the head-mounted display device 100. The shielding portion 115 is provided at the front side of the optical-mechanical assembly 132 and is used for projection imaging of the optical-mechanical assembly 132. The shielding portion 115 is provided with a through hole, and the lens of the first camera module 140 extends out of the front shell 112 through the through hole. That is, the first camera module 140 is arranged close to the optical-mechanical assembly 132, which facilitates the connection of the internal circuit on the one hand, and improves the reasonable arrangement of the optical-mechanical assembly 132 and the first camera module 140 in the installation space 113 on the other hand, which can not only realize the miniaturization of the head-mounted display device 100, but also improve the overall performance of the head-mounted display device 100. In addition, only the lens of the first camera module 140 extends out of the front shell 112, which can reduce the occlusion of the field of view of the first camera module 140 caused by the front shell 112, thereby expanding the field of view of the first camera module 140, and improve the structural integrity of the head-mounted display device 100.

[0038] The front shell 112 and the rear shell 111 in the technical solution of the present invention are enclosed together to form an installation space 113; the optical machine module 130 is arranged in the installation space 113, and the optical machine module 130 includes an optical machine bracket 131 and two optical machine components 132, and the two optical machine components 132 are arranged at intervals on the left and right sides of the optical machine bracket 131, thereby reducing the number of optical machine brackets 131 in the prior art, which can not only simplify the installation process, but also reduce the installation space 113 of the optical machine module 130, thereby realizing the miniaturization of the head-mounted display device 100. In addition, the number of optical machine brackets 131 in the prior art is reduced, and the distance between the optical machine bracket 131 and the front shell 112 and / or the rear shell 111 can also be reduced, so that when the two first camera modules 140 are installed on the optical machine bracket 131, they can be partially protruded from the front shell 112 without the help of other structures, further reducing the installation space 113 of the head-mounted display device 100, and realizing the miniaturization of the device. The first camera module 140 is partially protruded from the front shell 112, thereby reducing the obstruction of the field of view of the first camera module 140 caused by the front shell 112, thereby expanding the field of view of the first camera module 140, which helps to improve the overall performance of the head-mounted display device 100.

[0039] In one embodiment, the optical machine bracket 131 includes a middle portion 133 and two end portions 134 , a rib 135 is provided between any end portion 134 and the middle portion 133 , the optical machine assembly 132 is fixed to the rib 135 , the first camera module 140 is installed on the end portions 134 , and the middle portion 133 is installed with a second camera module. Specifically, the optical machine bracket 131 includes a middle portion 133 and two end portions 134, and a rib portion 135 is provided between any end portion 134 and the middle portion 133. The optical machine assembly 132 is fixed to the rib portion 135, and the first camera module 140 is installed at the end portion 134, that is, the first camera module 140 is installed on the outside of the optical machine assembly 132, thereby improving the reasonable arrangement of the optical machine assembly 132 and the first camera module 140 in the installation space 113, and the first camera module 140 and the optical machine assembly 132 have their own installation sections and do not interfere with each other, thereby ensuring the reliability of the installation of the optical machine assembly 132 and the first camera module 140. The middle portion 133 of the optical machine bracket 131 is provided with a second camera module, and the second camera module cooperates with the first camera module 140 to improve the overall performance of the head mounted display device 100.

[0040] Among them, the second camera module is configured as an RGB camera. Specifically, an RGB camera is a sensor that can identify and measure the color and brightness of an object surface by shooting images of multiple colors at high speed. Among them, RGB refers to the three colors of red, green and blue. The increase and decrease of these three colors constitute a variety of colors, so that the RGB camera can capture very rich color images and videos. The RGB camera uses three color filters to block the three light sources of red, green and blue respectively, thereby obtaining three images of different colors. Then superimpose these three images to obtain an image containing real color information, which is an RGB image. At present, RGB cameras are widely used in computer vision, robotics, industrial automation and other fields, and their applications are becoming more and more extensive. The second camera module is used to regulate and ensure the color display of the head-mounted display device 100, and improve the color display performance of the head-mounted display device 100.

[0041] In another embodiment, the first camera module 140 is configured as a 6DOF camera 141. Specifically, DOF (degree of freedom) refers to the degree of freedom, that is, the first camera module 140 has 6 degrees of freedom. Usually, 3DOF refers to the degree of freedom with 3 rotation angles, and 6DOF refers to the degree of freedom related to 3 positions, such as up and down, front and back, and left and right, in addition to the 3 rotation angles. That is, the lens of the first camera module 140 can achieve three-axis translation along X, Y, and Z in space and corresponding rotation around the three axes, thereby improving the flexibility of the first camera module 140, simulating the user's activities in the space, and improving the user's immersive experience.

[0042] To ensure the installation stability of the second camera module, in one embodiment, the second camera module is bonded to the middle portion 133. Specifically, the second camera module is bonded and fixed to the middle portion 133 of the optical machine bracket 131, thereby facilitating the installation of the second camera module and improving the installation stability of the second camera module, and one end of the second camera module abuts against the optical machine bracket 131, and the other end abuts against the front shell 112, that is, the second camera module is just stuck between the optical machine bracket 131 and the front shell 112, thereby further improving the installation stability of the second camera module.

[0043] Furthermore, the middle portion 133 is provided with a mounting groove 136, and one end of the second camera module close to the middle portion 133 is inserted into the mounting groove 136 and is bonded and fixed to the inner wall of the mounting groove 136. The mounting groove 136 is roughly U-shaped or L-shaped, so that one end of the second camera module close to the middle portion 133 slides into the mounting groove 136 from one side, and then is bonded and fixed by an adhesive, thereby increasing the bonding area between the second camera module and the optical machine bracket 131, and improving the installation stability of the second camera module. The side wall of the second mounting groove 136 can also further prevent the possibility of the second camera module tilting, thereby further improving the installation stability of the second camera module.

[0044] In order to ensure the installation stability of the second camera module, in one embodiment, the first camera module 140 includes a camera 141 and a shell cover 142, the camera 141 is installed in the shell cover 142, and the shell cover 142 is fixed to the optical machine bracket 131 by fasteners. Specifically, the camera 141 is installed in the shell cover 142, and the shell cover 142 is fixed to the optical machine bracket 131 by fasteners, so that the camera 141 is fixed to the optical machine bracket 131, thereby realizing the installation of the second camera module. And because the lens of the camera 141 needs to extend out of the front shell 112, if the shell cover 142 is not provided, it is very easy to scratch the lens, affecting the service life of the head-mounted display device 100, so the camera 141 is installed in the shell cover 142, and the shell cover 142 can also protect the camera 141, thereby improving the service life of the head-mounted display device 100. The shell cover 142 is fixed to the optical machine bracket 131 by fasteners, and a plurality of first mounting holes are provided on the periphery of the corresponding shell cover 142, and a plurality of second mounting holes are provided on the corresponding optical machine bracket 131, and the fasteners pass through the second mounting holes and are fastened to the first mounting holes. The camera 141 has a flexible structure, which extends from the shell cover 142 and extends to the side of the optical machine bracket 131 facing the rear shell 111, thereby further improving the installation stability of the second camera module, and the flexible structure is generally a flexible circuit board, so the flexible circuit board is arranged on the side of the optical machine bracket 131 facing the rear shell 111, which can also facilitate the subsequent electrical connection of the camera 141 with other electronic devices inside the head-mounted display device 100. Among them, the fastener can be configured as a fastening screw or a fastening bolt, etc.

[0045] Furthermore, the camera 141 is bonded inside the shell cover 142 , thereby reducing the possibility of displacement or vibration of the camera 141 inside the shell cover 142 , thereby ensuring the installation stability of the camera 141 , and further ensuring the possibility of vibration of the lens of the camera 141 .

[0046] To ensure the installation stability of the optical-mechanical assembly 132, the optical-mechanical assembly 132 is bonded to the optical-mechanical bracket 131. The optical-mechanical assembly 132 is bonded to the rib 135 of the optical-mechanical bracket 131, thereby facilitating the installation of the optical-mechanical assembly 132 and improving the installation stability of the optical-mechanical assembly 132. A fixing portion is formed on the upper side of the optical-mechanical assembly 132, and the fixing portion is bonded to the optical-mechanical bracket 131, and the optical-mechanical assembly 132 and the optical-mechanical bracket 131 are at least partially overlapped in the front-to-back direction, thereby reducing the thickness of the head-mounted display device 100 and realizing the miniaturization of the head-mounted display device 100. Preferably, the head-mounted display device 100 is arranged below the optical-mechanical bracket 131.

[0047] Furthermore, a fixing groove 137 is formed on the optical-mechanical bracket 131, and the upper side of the optical-mechanical assembly 132 is inserted into the fixing groove 137 and is bonded and fixed to the inside of the fixing groove 137. Specifically, the fixing groove 137 is provided on the rib 135 of the optical-mechanical bracket 131, which can further improve the overall structural strength of the optical-mechanical bracket 131. The opening of the fixing groove 137 is set downward, and the upper side of the optical-mechanical assembly 132 is inserted into the fixing groove 137, and then bonded and fixed by adhesive, thereby increasing the bonding area between the optical-mechanical assembly 132 and the optical-mechanical bracket 131, and improving the installation stability of the optical-mechanical assembly 132. The side wall of the fixing groove 137 can also further prevent the optical-mechanical assembly 132 from tilting, thereby further improving the installation stability of the optical-mechanical assembly 132. In order to further reduce the space occupied by the optical-mechanical module 130 , the cross-section of the fixing groove 137 is configured to be triangular, and the cross-section of the fixing portion formed on the upper layer of the corresponding optical-mechanical component 132 is also triangular to match the fixing groove 137 .

[0048] In order to realize the miniaturization of the device, the overall thickness of the optical machine bracket 131 should be as thin as possible and as small as possible under the premise of meeting the installation strength and use requirements of the optical machine bracket 131. Also, because the optical machine assembly 132 is generally an arc-shaped structure protruding forward, the thickness of the optical machine bracket 131 is generally smaller than the thickness of the optical machine assembly 132. Therefore, even if the rear shell 111 is arranged in affixed to the optical machine assembly 132, there is a certain accommodation space between the optical machine bracket 131 and the rear shell 111, and the accommodation space can be used for the flexible circuit board inside the head-mounted display device 100, thereby further reducing the internal space of the head-mounted display device 100 and realizing the miniaturization of the head-mounted display device 100. In addition, multiple flexible circuit boards are stacked obliquely upward along the outer side wall of the mounting groove 136, so as to make the best use of the accommodation space, further reduce the internal space of the head-mounted display device 100, and realize the miniaturization of the head-mounted display device 100.

[0049] In one embodiment, the optical machine bracket 131 is made of magnesium-lithium alloy material. Specifically, the use of magnesium-lithium alloy material can not only improve the structural strength of the optical machine bracket 131, but also realize the miniaturization of the equipment.

[0050] In another embodiment, the front shell 112 and / or the rear shell 111 are made of plastic titanium material. Specifically, plastic titanium is a polymer material with memory, which has the characteristics of super toughness, impact resistance, wear resistance, low friction coefficient, etc., and can effectively prevent damage to the eyes and face caused by frame breakage and friction during exercise. Due to its unique molecular structure, it has good chemical resistance, is not easy to deform in a high temperature environment, can withstand a high temperature of 350° in a short time, is not easy to melt and burn, and is the preferred material for the frame 110. Therefore, the front shell 112 and / or the rear shell 111 are made of plastic titanium material, which can further improve the overall performance of the head-mounted display device 100.

[0051] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A head mounted display device, characterized in that: include: Back shell; A front shell, which is enclosed together with the rear shell to form an installation space; an optical-mechanical module, arranged in the installation space, comprising an optical-mechanical bracket and two optical-mechanical components installed on the optical-mechanical bracket; and The two first camera modules are disposed on opposite sides of the optical machine bracket and on a side of the optical machine bracket facing the front shell, and are partially protruded from the front shell.

2. The head mounted display device according to claim 1, wherein: The front shell includes a frame portion and a shielding portion which are spliced ​​to each other. The shielding portion is arranged on the front side of the optical-mechanical assembly. A through hole is provided on the shielding portion. The lens of the first camera module extends out of the front shell through the through hole.

3. The head mounted display device according to claim 1, wherein: The optical machine bracket includes a middle part and two end parts, and a rib is provided between any of the end parts and the middle part. The optical machine assembly is fixed to the rib, the first camera module is installed on the end parts, and the second camera module is installed on the middle part.

4. The head mounted display device according to claim 3, wherein: The middle portion is provided with a mounting groove, and one end of the second camera module close to the middle portion is inserted into the mounting groove and is bonded and fixed to the inner wall of the mounting groove.

5. The head mounted display device according to claim 3, wherein: The second camera module is configured as an RGB camera.

6. The head mounted display device according to claim 1, wherein: The first camera module includes a camera and a shell cover, the camera is installed in the shell cover, and the shell cover is fixed to the optical machine bracket by fasteners.

7. The head mounted display device according to claim 6, wherein: The camera is bonded inside the housing cover.

8. The head mounted display device according to claim 1, wherein: The first camera module comprises a camera and a shell cover, wherein the camera is bonded inside the shell cover; The optical-mechanical assembly is bonded to the optical-mechanical bracket.

9. The head mounted display device according to claim 8, wherein: A fixing groove is formed on the optical machine bracket, and the upper side of the optical machine component is inserted into the fixing groove and is bonded and fixed to the inside of the fixing groove.

10. The head mounted display device according to any one of claims 1 to 9, characterized in that: The optical-mechanical support is made of magnesium-lithium alloy material; and / or, The front shell and / or the rear shell are made of plastic titanium material.

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