Head display device and shading mask thereof

Abstract

The invention provides head display equipment and a shading mask thereof. The shading mask comprises a shading main body and an electrochromic unit, one end of the shading body is used for being connected with a host of the head-mounted display device, the other end of the shading body is used for being attached to the face of a wearer, when the head-mounted display device is worn, the face of the human body, the host and the shading mask jointly define a shading space, a window is formed in the side face of the shading body, and ambient light can enter the shading space through the window; and the electrochromic unit covers the window of the shading main body, is electrically connected with the host, and can adjust the transmittance under the control of the host, so as to control the amount of ambient light entering the shading space through the window. According to the shading mask, by controlling the transmittance of the electrochromic unit, the purpose of controlling the light inlet amount of the ambient light entering the head-mounted display device through the window is achieved, the shading mask is flexible to control, the shading degree can be adjusted, the use requirements of more scenes are met, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of head-mounted display device structures, and in particular to a head-mounted display device and a light-shielding mask thereof. Background Art

[0002] The visor of a head-mounted display device usually has the following functions: 1. Reduce environmental interference: The visor can reduce the interference of external light, enhance the sense of immersion, and enable the wearer to focus more on the content presented in the head-mounted display device. 2. Improve visual effects: The visor can reduce light leakage from the head-mounted display device, increase the contrast and brightness of the picture, thereby improving the visual effect. 3. Increase comfort: The visor can reduce the wearer's visual interference from the surrounding environment, thereby increasing the wearer's comfort. 4. Protect privacy: In some cases, the visor can protect the wearer's privacy and prevent others from seeing the content presented in the head-mounted display device. 5. Improve stability: The visor can increase the stability of the head-mounted display device and reduce picture jitter and blurring caused by head movement.

[0003] However, if the visor completely blocks out light, it may cause the following problems: 1. Safety issues: Complete shading may prevent the wearer from seeing the surrounding environment, thereby increasing the risk of accidents. 2. Visual problems: Complete shading may cause visual fatigue and eye discomfort, especially when used for a long time. 3. Operational problems: Complete shading may affect the wearer's perception of the surrounding environment and the ability to operate the head-mounted display device. Therefore, the visor of the head-mounted display device is usually designed to partially block light in order to balance the shading effect with comfort, safety and other aspects. The current conventional technical solution is to design a smaller gap at the nose position to allow a small amount of external light to penetrate into the inside of the mask. The defect of this design is that due to the different faces and nose shapes of different users, the size of the light leakage area cannot be unified when worn by different users, and there is a problem of poor shading effect. Summary of the Invention

[0004] In a first aspect, an embodiment of the present application provides a light shielding mask for a head-mounted display device, the light shielding mask comprising:

[0005] A light shielding body, one end of which is used to connect to the host of the head-mounted display device, and the other end is used to fit the wearer's face. When the head-mounted display device is worn, the human face, the host, and the light shielding mask together form a light-shielding space. The side of the light shielding body is provided with a window, and ambient light can enter the light-shielding space through the window.

[0006] The electrochromic unit is covered on the window of the shading body. The electrochromic unit is electrically connected to the host and can adjust the transmittance under the control of the host, thereby controlling the amount of ambient light entering the shading space through the window.

[0007] In a second aspect, an embodiment of the present application provides a head-mounted display device, which includes a host and the light-shielding mask described in the above embodiment, and the light-shielding mask is connected to the host.

[0008] The shading mask provided in the embodiment of the present application is configured with a window on the side of the shading body and an electrochromic unit at the corresponding window position. By controlling the transmittance of the electrochromic unit, the amount of ambient light entering the head-mounted display device through the window is controlled. The shading mask is flexible in control and can adjust the degree of shading to meet the needs of use in more scenarios and enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0010] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a head-mounted display device used in the present application;

[0011] Figure 2 yes Figure 1 A schematic diagram of the partial structure of the head-mounted display device in the embodiment;

[0012] Figure 3 This is a schematic structural diagram of a light shield in an embodiment of the present application;

[0013] Figure 4 yes Figure 3 A schematic diagram of a portion of the structure of the light shield in the embodiment;

[0014] Figure 5 yes Figure 4 Schematic diagram of the disassembly of the structure in the embodiment;

[0015] Figure 6 yes Figure 5 A schematic cross-sectional view of the structure of the electrochromic unit at position AA in the embodiment;

[0016] Figure 7 Schematic diagram of the structure of the auxiliary connecting plate in this embodiment;

[0017] Figure 8 yes Figure 7 A schematic structural diagram of the auxiliary connecting plate from another perspective in the embodiment;

[0018] Figure 9 1 is a schematic diagram of the partial structure of the head-mounted display device in this embodiment;

[0019] Figure 10 Schematic diagram of two states of a user wearing the head display device in this embodiment. DETAILED DESCRIPTION

[0020] The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only intended to illustrate the present application and are not intended to limit the scope of the present application. Similarly, the following examples are only some examples of the present application and not all examples. All other examples obtained by those of ordinary skill in the art without creative work are intended to fall within the scope of protection of this application.

[0021] The terms "first", "second" and "third" in the embodiments of the present application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include at least one of such features. In the description of the present application, "multiple" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined. All directional indications in the embodiments of the present application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products or devices.

[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] This application describes a head-mounted display (HMD) device, which may be a virtual reality device, such as virtual reality glasses. The HMD device may be configured to transmit data to and receive data from an external processing device via a signal connection, which may be a wired connection, a wireless connection, or a combination thereof. However, in other cases, the HMD device may function as a standalone device, where data processing is performed within the HMD device itself. The signal connection may be configured to carry any type of data, such as image data (e.g., still images and / or full-motion video, including 2D and 3D images), audio, multimedia, voice, and / or any other type of data. The external processing device may be, for example, a game console, a personal computer, a tablet computer, a smartphone, or other type of processing device. The signal connection may be, for example, a Universal Serial Bus (USB) connection, a Wi-Fi connection, a Bluetooth or Bluetooth Low Energy (BLE) connection, an Ethernet connection, a cable connection, a DSL connection, a cellular connection (e.g., 3G, LTE / 4G, or 5G), or a combination thereof. Additionally, the external processing device can communicate with one or more other external processing devices via a network, which can be or include, for example, a local area network (LAN), a wide area network (WAN), an intranet, a metropolitan area network (MAN), the global Internet, or a combination thereof. AR, VR, MR, and other smart devices are all head-mounted display devices equipped with a cellular communication module.

[0024] Please also refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of an embodiment of a head-mounted display device used in this application. Figure 2 yes Figure 1 Schematic diagram of partial structure breakdown of the head display device in the embodiment; It should be noted that the head display device in this application may include AR (augmented reality), VR (virtual reality), MR (mixed reality) and other head-mounted display devices. The head display device 10 can be worn on the user's head and has the function of being able to display images in front of the user's eyes, such as virtual reality or mixed reality. Figure 1As shown, the head display device 10 includes: a host 100, a light shielding mask 200 and a headband device 300. The host 100 is connected to the headband device 300, and the headband device 300 also encloses a head display space 1000 for the user to wear. The user can wear the host 100 in front of the eyes through the headband device 300, and the host 100 can form an image in front of the user's eyes to achieve virtual reality or augmented reality functions. At the same time, the host 100 can also adjust the imaging position according to the user's pupil distance, so that users with different pupil distances can use the head display device 100, thereby improving the versatility of the head display device 10. The detailed structure of the host 100 and the headband device 300 is within the scope of understanding of those skilled in the art and will not be repeated here. The embodiment of this application mainly introduces the structural features of the light shielding mask 200 and its related components.

[0025] For more details, please refer to Figures 3 to 5 , Figure 3 Schematic diagram of the structure of the light shield in the embodiment of the present application. Figure 4 yes Figure 3 A schematic diagram of a portion of the structure of the light shield in the embodiment, Figure 5 yes Figure 4 A schematic diagram of the disassembled structure in the embodiment, wherein the light shielding mask 200 is connected to the host 100, which can be a fixed connection or a detachable structure connection, and the detailed structure will be introduced later.

[0026] It should be noted that the light shielding mask 200 in this embodiment can be an integrated structure for shielding both sides, or it can be divided into two parts (as shown in the figure), that is, the light shielding mask 200 can include two structures independently connected to the host 100. This is not specifically limited here. In this embodiment, only the structure of the light shielding mask 200 as two parts is used as an example for explanation, and Figure 4 and Figure 5 The diagram only illustrates the structure of one half of the sunshade, and the structure of the other half is similar or mirror-imaged.

[0027] The shading mask 200 includes a shading body 210 and an electrochromic unit 220. One end of the shading body 210 is connected to the host 100, and the other end is adapted to contact the wearer's face. The end of the shading body 210 adapted to contact the wearer's face can be made of a flexible, skin-friendly material such as rubber or fabric. When the head-mounted display 200 is worn, the human face, the host 100, and the shading mask 200 together form a shading space. A window 211 is provided on the side of the shading body 210, allowing ambient light to enter the shading space.

[0028] Optionally, the electrochromic unit 220 in this embodiment is covered on the window 211 of the light-shielding body 210 , wherein the connection method between the electrochromic unit 220 and the light-shielding body 210 can be bonding or snap connection, etc., which is not specifically limited here.

[0029] The electrochromic unit 220 is electrically connected to the host 100 and can adjust the transmittance under the control of the host 100 , thereby controlling the amount of ambient light entering the light-shielding space through the window 211 .

[0030] Optionally, please also refer to Figure 6 , Figure 6 yes Figure 5 A schematic cross-sectional view of the electrochromic unit at point AA in an embodiment shows that, in one embodiment of the electrochromic unit 220, the electrochromic unit 220 may specifically include an upper substrate 221, an upper conductive layer 222, a color-changing material layer 223, a lower conductive layer 224, a lower substrate 225, a plastic frame 226, and an electrode 227. The upper substrate 221, the upper conductive layer 222, the color-changing material layer 223, the lower conductive layer 224, and the lower substrate 225 are stacked in sequence, with the plastic frame 226 surrounding the color-changing material layer 223. The ends of the plastic frame 226 are bonded to the surfaces of the upper conductive layer 222 and the lower conductive layer 224, respectively. The electrode 227 is used to connect to an external power source.

[0031] Optionally, the upper substrate 221 and the lower substrate 225 are made of a flexible transparent resin material, thereby making the overall structure of the electrochromic unit 220 a flexible and bendable structure. The upper substrate 221 and the lower substrate 225 play the role of supporting and protecting the internal structure. In some embodiments, the material of the upper substrate 221 and the lower substrate 225 can be PET (Polyethyleneterephthalate, abbreviated as PET or PEIT, commonly known as polyester resin, a condensation product of terephthalic acid and ethylene glycol), PMMA (polymethyl methacrylate (poly(methyl methacrylate)), abbreviated as PMMA), also known as acrylic, acrylic or organic glass), PC (Polycarbonate, polycarbonate (abbreviated as PC in English) is a high molecular polymer containing carbonate groups in the molecular chain), PI (polyimide), etc. Among them, the material of the upper conductive layer 222 and the lower conductive layer 224 is made of a transparent conductive material. The transparent conductive material may be indium tin oxide (ITO), zinc aluminum oxide (AZO), fluorine-doped tin oxide (FTO), or graphene film. The color-changing material layer 223 may be selected from organic polymers (including polyaniline, polythiophene, etc.), inorganic materials (Prussian blue, transition metal oxides such as tungsten trioxide), and organic small molecules (viologens).

[0032] This embodiment only lists the structural features of one type of electrochromic unit. In addition, in some other embodiments, structures using other materials and structural principles may be used, which will not be listed or described in detail here. This embodiment uses an electrochromic film to achieve this. Electrochromism is the phenomenon in which the optical properties (reflectivity, transmittance, absorptivity, etc.) of a material undergo a stable and reversible color change under the action of an external electric field, which is manifested in a reversible change in color and transparency.

[0033] Optionally, see Figure 4 and Figure 5 The light shield in this embodiment further includes an auxiliary connecting plate 230 and a first flexible circuit board 240. One end of the first flexible circuit board 240 is connected to the electrochromic unit 220, and the other end is used for electrical connection to the host 100. The auxiliary connecting plate 230 is fixed to the end of the light shield body 210 that is connected to the host 100.

[0034] Please also refer to Figure 7 and Figure 8 , Figure 7 is a schematic structural diagram of the auxiliary connecting plate in this embodiment, Figure 8 yes Figure 7 A schematic structural diagram of the auxiliary connecting plate from another perspective in the embodiment, wherein the overall shape of the auxiliary connecting plate 230 in this embodiment is an arc-shaped structure, adapted to the shape of the connecting end face of the shading body 210. The auxiliary connecting plate 230 is provided with a connecting groove 231 and a positioning groove 232. The connecting groove 231 passes through the auxiliary connecting plate 230 in the thickness direction, and the positioning groove 232 is provided on the surface of the auxiliary connecting plate 230 facing away from the electrochromic unit 220 (that is, the surface on the side where the auxiliary connecting plate 230 is connected to the host 100). The first flexible circuit board 240 is provided in the connecting groove 231, and the connecting contact at the end of the first flexible circuit board 240 is provided in the positioning groove 232. The positioning groove 232 is used to realize the positioning of the connecting contact. Please continue to refer to Figure 8 and Figure 2 The surface of the auxiliary connecting plate 230 facing away from the electrochromic unit 220 (that is, the surface on which the auxiliary connecting plate 230 is connected to the host 100) is also provided with a positioning protrusion 234, which is used to cooperate with the positioning groove 103 of the host 100 to achieve the positioning of the light-shielding mask 200 and the host 100.

[0035] See also Figure 9 , Figure 9This is a partial structural breakdown diagram of the head-mounted display device in this embodiment. In this embodiment, the host 100 is provided with electrical connection contacts 110 on the end surface thereof for connection to the light shield 200. The electrochromic unit 220 of the light shield 200 is electrically connected to the main control board 120 within the host 100 via the electrical connection contacts 110. Optionally, the electrical connection contacts 110 may be spring-loaded pins. A small connection board 130 is provided within the host. The spring-loaded pins (electrical connection contacts 110) are fixed to the small connection board 130. The small connection board 130 is electrically connected to the main control board 120 via a second flexible circuit board 140.

[0036] Please continue reading Figure 2 、 Figure 7 as well as Figure 9 In this embodiment, the auxiliary connecting plate 230 further includes a mounting slot 233, within which a first connecting member 201 is disposed. The first connecting member 201 is used to connect the light shield 200 to the host 100. Optionally, the first connecting member 201 may be a magnetic body. The host 100 includes a second connecting member 102, which aligns with the first connecting member 201 of the light shield 200 to achieve a detachable connection between the light shield 200 and the host 100. Both the first connecting member 201 and the second connecting member 102 may be magnetic bodies, such as magnets.

[0037] The head-mounted display device in the embodiment of the present application designs part of the shading mask as a color-changing area, so that the shading mask can be partially changed to a semi-transparent state, thereby achieving an adjustable and switchable shading effect to meet the needs of users in different scenarios. Figure 10 , Figure 10 Figure 1 shows two different states of a user wearing the head-mounted display device according to this embodiment. The left diagram shows the shading mask in a light-blocking state, while the right diagram shows the shading mask in a translucent state. In this state, light can enter the light-blocking space 1001 through the window 211. The electrochromic unit changes color mode to a transparent or translucent state, allowing the user to observe the external environment with peripheral vision. When the electrochromic unit returns to a deep black mode, external light cannot enter the shading mask, and the user enters an immersive mode.

[0038] The shading mask provided in the embodiment of the present application is configured with a window on the side of the shading body and an electrochromic unit at the corresponding window position. By controlling the transmittance of the electrochromic unit, the amount of ambient light entering the head-mounted display device through the window is controlled. The shading mask is flexible in control and can adjust the degree of shading to meet the needs of use in more scenarios and enhance the user experience.

[0039] The above descriptions are only some embodiments of the present application and do not limit the scope of protection of the present application. Any equivalent device or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A light shielding mask for a head-mounted display device, characterized in that: The light shield comprises: A light shielding body, one end of which is used to connect to the host of the head-mounted display device, and the other end is used to fit the wearer's face. When the head-mounted display device is worn, the human face, the host, and the light shielding mask together form a light-shielding space. The side of the light shielding body is provided with a window, and ambient light can enter the light-shielding space through the window. The electrochromic unit is covered on the window of the shading body. The electrochromic unit is electrically connected to the host and can adjust the transmittance under the control of the host, thereby controlling the amount of ambient light entering the shading space through the window.

2. The sunshade mask according to claim 1, wherein: The light-shielding mask further includes a first flexible circuit board, one end of which is connected to the electrochromic unit, and the other end of which is used to be electrically connected to the host.

3. The sunshade mask according to claim 2, wherein: The light-shielding mask also includes an auxiliary connecting plate, which is fixed to one end of the light-shielding body for connecting to the host. The auxiliary connecting plate is provided with a connecting groove and a positioning groove. The connecting groove passes through the auxiliary connecting plate in the thickness direction. The positioning groove is provided on the surface of the auxiliary connecting plate away from the electrochromic unit. The first flexible circuit board is passed through the connecting groove, and the connecting contact at the end of the first flexible circuit board is provided in the positioning groove.

4. The sunshade mask according to claim 3, characterized in that: The auxiliary connecting plate is further provided with a mounting groove, in which a first connecting piece is provided. The first connecting piece is used to connect the light shield to the host.

5. The sunshade mask according to claim 4, characterized in that: The first connecting member is a magnetic body.

6. The sunshade mask according to claim 1, wherein: The electrochromic unit is bonded and fixed to the light-shielding body.

7. A head-mounted display device, characterized in that: The head-mounted display device includes a host and the light-shielding mask according to any one of claims 1 to 6, and the light-shielding mask is connected to the host.

8. The head-mounted display device according to claim 7, wherein: The end surface of the host used for connecting with the light-shielding mask is provided with an electrical connection contact, and the electrochromic unit of the light-shielding mask is electrically connected to the main control board in the host through the electrical connection contact.

9. The head-mounted display device according to claim 8, wherein: The electrical connection contact is a spring pin, a connecting plate is provided in the host, the spring pin is fixed on the connecting plate, and the connecting plate is electrically connected to the main control board through a second flexible circuit board.

10. The head-mounted display device according to claim 7, wherein: The host is provided with a second connecting piece, which is aligned with the first connecting piece of the light-shielding mask to achieve a detachable connection between the light-shielding mask and the host, wherein the first connecting piece and the second connecting piece are both magnetic bodies.

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