Near-to-eye display device and charging box

Abstract

The utility model provides a charging box and near-to-eye display equipment thereof. The near-to-eye display equipment comprises a lens and a display module, a first coil is arranged on the periphery of the lens, is connected with the first battery and forms a loop; the display module is used for displaying information, is detachably mounted at any position of the surface of the lens and can freely move, and a second coil is arranged on the display module; the second coil and the first coil can be mutually inducted so as to supply power to the display module through wireless induction. The utility model further provides a charging box which is used for charging the first battery of the near-to-eye display equipment. According to the near-to-eye display equipment, the display module can freely move on the lens and can be powered on the lens in a dynamic state or a static state, so that interference caused by wired power supply and free movement of the display module is effectively avoided; the loop size formed by the second coil is smaller than that formed by the first coil, so that the influence of the coils on the visual field of the lens is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of head-mounted display devices, and in particular to near-eye display devices and charging boxes. Background Art

[0002] With the continuous development of AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality), etc., various head-mounted display devices continue to emerge. Such devices generally adopt optical solutions such as optical waveguides or prisms. The light source (or image source) or part of the optics of such solutions are mostly set on the temples of the wearer. In addition, optical solutions such as optical waveguides have special requirements for lenses. The size and weight of such devices are relatively large, and the user experience is not good for a long time. On the other hand, the display area of ​​the display module of such devices is fixed in position. If the display device needs to move freely or to a specific position in the display state, there are often problems with the power supply, because the wired electrical connection often interferes with the movement of the display module due to the physical existence of the wires. Utility Model Content

[0003] A first aspect of an embodiment of the present application provides a near-eye display device, characterized in that the near-eye display device comprises a lens, and the lens comprises an eye side and an environment side;

[0004] A display module is configured to generate light and project it to the eye side;

[0005] A first battery is disposed spaced apart from the display module; and

[0006] A first coil, surrounding the lens, the first coil is electrically connected to the first battery, and the first coil forms at least one loop;

[0007] Wherein, the display module is configured to move on the surface position of the lens, and a second coil is also provided on the display module, and the loop size formed by the second coil is smaller than the loop size formed by the first coil; the second coil is configured to sense each other with the first coil, and the induction is configured so that the display module is powered by the first battery during the movement of the lens or at any fixed position of the display module in the preset area of ​​the lens.

[0008] In a second aspect, an embodiment of the present application provides a charging box for charging a first battery of a near-eye display device described in any one of the above embodiments, the charging box comprising a box body and the near-eye display device described in any one of the above embodiments of the claim, the box body comprising a third coil and a second electrical input interface, the second electrical input interface and the third coil are electrically connected, and the first coil and the third coil are configured to wirelessly induct each other to charge the first battery through the second electrical input interface.

[0009] In the near-eye display device provided in the embodiment of the present application, the display module can generate light and project it to the user's eye side, the display module can move freely on the lens, and at the same time, a first coil is provided in the circumference of the lens and a second coil is provided on the display module, the two are electromagnetically induced with each other, and the loop size formed by the second coil is smaller than the loop size formed by the first coil, thereby effectively reducing the influence of the coil on the field of view of the lens. The display module is powered by the first battery during the movement of the display module on the lens or at a fixed position in a preset area of ​​the lens, which can ensure that the display module can be powered to work whether it is dynamic or static on the lens, effectively avoiding the interference between the use of wired power supply and the free movement of the display module.

[0010] Other beneficial effects of the embodiments of the present application will be described in conjunction with the specific embodiments below. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a near-eye display device of the present application;

[0013] Figure 2 This is a schematic diagram of the overall structure of an embodiment of a near-eye display device of the present application without temples;

[0014] Figure 3 yes Figure 1 A schematic diagram of another viewing angle of the embodiment;

[0015] Figure 4 It is a schematic diagram of the overall structure in which both the display module and the first coil have multiple components;

[0016] Figure 5 It is a schematic cross-sectional view of the structure of an embodiment in which a display module is provided with a coil support;

[0017] Figure 6 yes Figure 5 A schematic diagram showing a second battery provided in the display module in the embodiment;

[0018] Figure 7 yes Figure 5 A schematic diagram of the structural disassembly of the display module in the embodiment;

[0019] Figure 8 is a schematic cross-sectional view of the structure of another embodiment of a display module;

[0020] Fig. 9 yes Figure 8 A schematic diagram showing a second battery provided in the display module in the embodiment;

[0021] Fig.10 yes Fig. 9 A schematic diagram of the structural disassembly of the display module in the embodiment;

[0022] Fig.11 It is a schematic diagram of the overall structure of an embodiment of the charging box of the present application. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0024] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position 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 of their variations 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.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] As used herein, "electronic equipment" (or simply "terminal") includes, but is not limited to, a device configured to receive / send communication signals via a wireline connection (such as via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (for example, for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to satellite or cellular phones; personal communications system (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities; PDAs that can include radiotelephones, pagers, Internet / intranet access, web browsers, notepads, calendars, and / or global positioning system (GPS) receivers; and conventional laptop and / or handheld receivers or other electronic devices that include radiotelephone transceivers. Mobile phones, AR, VR, XR, MR and other smart devices can all be electronic devices configured with a cellular communications module.

[0027] See also Figure 1 , Figure 1 It is a schematic diagram of the overall structure of an embodiment of the near-eye display device of the present application. It should be noted that the electronic device in the present application can be a smart glasses structure and form including AR, VR, XR, MR, etc. Among them, the near-eye display device 100 includes a frame 110, temples 120 and lenses 130. The temples 120 are connected to the frame 110, and the frame 110 is used to fix the lenses 130. The lenses can be used for myopia glasses, hyperopia glasses, goggles, sunglasses, smart glasses, helmets, etc. The features of this part are within the scope of understanding of those skilled in the art and will not be repeated here.

[0028] Optionally, please also refer to Figure 2 to Figure 5 , Figure 2 This is a schematic diagram of the overall structure of an embodiment of the near-eye display device of the present application without the temples. Figure 3 yes Figure 1 A schematic diagram of another perspective of the embodiment, Figure 4It is a schematic diagram of the overall structure in which the display module and the first coil both have multiple components. Figure 5 1 is a schematic structural cross-sectional view of an embodiment of a display module provided with a coil bracket; the near-eye display device 100 includes a lens 130 and a display module 140; the lens 130 includes an eye side 1302 and an environment side 1301; the display module 140 is configured to generate light and project it to the eye side 1302, and the first battery 121 is arranged at an interval from the display module 140; a first coil 150 is arranged around the lens 130, the first coil 150 surrounds the lens 130 and is electrically connected to the first battery 121, and the first coil 150 forms at least one loop, and this loop is used for mutual electromagnetic induction with the second coil 141 that appears in the following embodiment; the display module 140 is detachably mounted at any position on the surface of the lens 130, and the display module 140 is configured to be movable at any position on the surface of the lens 130, and the user can move the display module 140 to any position on the surface of the lens 130 as needed, and the display module 140 is used to display information, and the display module 140 is provided with a second coil 141; The second coil 141 can be mutually inductively coupled with the first coil 150. For example, the first coil 150 acts as a transmitter to convert an electric field into a magnetic field, and the second coil 141 acts as a receiver to convert a magnetic field into an electric field. The loop size formed by the second coil 141 is smaller than the loop size formed by the first coil 150. It can be understood that the above-mentioned induction is configured as wireless induction of the first coil 150 and the second coil 141 to realize powering the display module 140 through the first battery 121 during the movement of the lens 130 or at any fixed position of the display module 140 in the preset area of ​​the lens 130. It can be understood that since the first coil 150 is arranged around the lens 130, the display module can move freely on the surface of the lens 130, and can remain in a fixed position when the user moves to a viewing position suitable for him / her. Whether in the movement process or at a fixed position, the display module 140 can be powered by the wireless induction of the first coil 150 and the second coil 141. In some embodiments, the preset area may be an inner ring area surrounded by the first coil 150 on the lens 130. In other embodiments, the preset area may also be an outer ring area surrounded by the first coil 150 on the lens 130. The user may freely move and select the position of the preset area as needed, wherein any fixed position may be a certain or any fixed position where the user stops after moving the display module, and this position may depend on the user's operation needs or visual field viewing needs. For example, the lens is often aligned with the center of the visual field of the eye, which is often a better position. Of course, if the user wants to see the real environment side 1301 physical world at this time, the display module 140 can be moved to a position deviating from the center of the visual field, and the user can even move the display module 140 to the lens 130 position corresponding to the blind spot of the eye's visual field. At this time, the display module 140 can be located on the first coil 150 or the outer ring of the first coil 150, etc.

[0029] Optionally, in some embodiments, the display module 140 can be placed on the lens 130 by clamping, adsorption, etc., and the display module 140 can move relative to the lens 130. In other embodiments, the display module 140 can be fixed on the lens 130 by other methods. As long as the display module 140 can be installed, fixed, detachable and movable at any position of the lens 130, it is an embodiment included in the present application and is not specifically limited here.

[0030] Optionally, see Figure 1 to Figure 3 , the first coil 150 surrounds the lens 130; in some embodiments, optionally, the first coil 150 can be embedded in the outer edge of the lens 130, optionally, the first coil 150 can be wound around the outer edge of the lens 130, optionally, the first coil 150 can be provided in the frame 110 and surround the lens 130, in other embodiments, the first coil 150 can surround the lens 130 in other ways; optionally, the first coil 150 can be located on the side facing the environment side 1301, for example, located in a groove or surface of the frame 110 facing the environment, etc., optionally, The first coil 150 may be located on the side facing the eye side 1302, for example, in a groove or surface of the frame 110 facing the eye side 1302; the accompanying drawings only provide some examples, and in other embodiments, those skilled in the art may adjust the position of the first coil 150 as required. As long as the induced current of the first coil 150 surrounds the lens 130 to form a loop, and then mutually induces with the second coil 141, and ensures that the display module 140 can be electrically operated at any position on the surface of the lens 130, these are all embodiments included in the present application and are not specifically limited here.

[0031] Please continue reading Figure 1 The near-eye display device 100 is also provided with a first electrical input interface 122, at least one of the first coil 150 and the first battery 121 is electrically connected to the first electrical input interface 122, and the first electrical input interface 122 can directly supply power to the first coil 150 and the first battery 121. Optionally, the first coil 150 is electrically connected to the first electrical input interface 122, optionally, the first battery 121 is electrically connected to the first electrical input interface 122, optionally, the first coil 150 and the first battery 121 are both electrically connected to the first electrical input interface 122; optionally, the first electrical input interface 122 can be a micro-USB interface, optionally, the first electrical input interface 122 can be a lightning interface, optionally, the first electrical input interface 122 can be a type-c interface.

[0032] Optionally, please also refer to Figure 5 to Figure 7 , Figure 6 yes Figure 5The schematic diagram of the embodiment showing the module being provided with a second battery, Figure 7 yes Figure 5 Schematic diagram of the structural disassembly of the display module in the embodiment; optionally, the display module 140 also includes a shell 143, an optical component 146 and a display unit 147, the optical component 146 is located at the light-emitting end of the display unit 147, and the second coil 141 is electrically connected to the display unit 147; the shell 143 is formed with a accommodating cavity 145, and the optical component 146, the display unit 147 and the second coil 141 are arranged in the accommodating cavity 145.

[0033] Optionally, in some embodiments, the shape of the display module 140 may be columnar, such as a cylinder or a prism. In other embodiments, the shape of the display module 140 may be other irregular shapes, which are not specifically limited here. The accompanying drawings only show an example of a cylindrical display module. In other embodiments, those skilled in the art may make adjustments as needed, which are not specifically limited here. The cross-sectional dimensions of the display module 140 are much smaller than the dimensions of the surface of the lens 130. Optionally, the maximum cross-sectional dimensions of the housing 143 do not exceed 12 mm, and the maximum cross-sectional dimensions of the second coil 141 do not exceed 11 mm. Specifically, the maximum cross-sectional dimensions of the display module 140 do not exceed 12 mm. Optionally, the cross-sectional dimensions may be 10 mm, 9 mm, 8 mm, 6 mm, 5 mm, or 3 mm. The specific meaning of the cross-sectional dimensions is related to the shape of the cross-sectional dimensions. For example, when the cross-sectional dimensions are circular, the cross-sectional dimensions refer to the diameter of the cross-sectional dimensions. When the cross-sectional dimensions are square, the cross-sectional dimensions refer to the side length of the square. When the cross-sectional dimensions are rectangular, the cross-sectional dimensions refer to the length of the long side. The cross-sectional dimensions of the display module 140 are much smaller than the dimensions of the surface of the lens 130, so that the display module 140 occupies a small proportion of the surface of the lens 130, and will not hinder the user's sight or hinder the user's viewing, thereby improving the user experience.

[0034] The display module 140 is provided with a second coil 141, and the second coil 141 may be around the circumference of the display module 140. Optionally, in some embodiments, the first coil 150 is a power transmitting end, and the second coil 141 is a power receiving end, and the second coil 141 may be mutually inductive with the first coil 150, so as to realize power supply to the display module 140 through wireless induction between the first coil 150 and the second coil 141, and the display module 140 has electricity to work at any position on the surface of the lens 130. Optionally, in some embodiments, the temple 120 may also be provided with a control circuit electrically connected to the first battery 121, the control circuit converts the direct current of the first battery 121 into alternating current and transmits it to the first coil 150 to generate magnetic induction, the second coil 141 generates alternating current after receiving the magnetic induction, optionally, the display module 140 may also include a rectifier circuit, the rectifier circuit converts alternating current into direct current, the display module 140 may also include a conversion circuit, the conversion circuit converts direct current into a suitable voltage or current for the display module 140 to operate, the features of this part are within the understanding of those skilled in the art and will not be elaborated here.

[0035] Please continue reading Figures 5 to 10 , Figure 8 is a schematic cross-sectional view of another embodiment of a display module, Fig. 9 yes Figure 8 The schematic diagram of the embodiment showing the module being provided with a second battery, Fig.10 yes Fig. 9Schematic diagram of the structural decomposition of the display module in the embodiment; Optionally, the display unit 147 includes a display panel 1471 and a circuit board 1472, and the display panel 1471 and the circuit board 1472 are electrically connected. In some embodiments, optionally, the display panel 1471 and the circuit board 1472 are connected in a plug-in manner, optionally, the display panel 1471 and the circuit board 1472 are connected in an electrical wire manner, optionally, the display panel 1471 and the circuit board 1472 are connected in a contact manner, optionally, the circuit board 1472 may be an independent circuit board or a peripheral circuit board integrated around the display unit 147, for example, the circuit board 1472 may include a plug board, a drive board, a power board, etc. Only some embodiments are listed here, and in other embodiments, In the embodiment, those skilled in the art can make adjustments based on their needs, which are not specifically limited here; the second coil 141 is electrically connected to the circuit board 1472; the display panel 1471 is provided with a display 14711 for generating light, and optionally, the display 14711 can be located in the middle of the display panel 1471; the optical component 146 includes an optical module 1461 and a bracket 1462, the bracket 1462 is used to support and fix the optical module 1461, the optical module 1461 is located at the light emitting end of the display 14711, the bracket 1462 and the optical module 1461 are located on the side of the display panel 1471 away from the circuit board 1472, and the bracket 1462 ensures that the light emitting ends of the optical module 1461 and the display 14711 correspond.

[0036] Optionally, see Figure 1 to Figure 4 Optionally, the first battery 121 has at least one; Optionally, please continue to refer to Figure 1 and Figure 4 The first battery 121 may have one and be installed on any one of the temples 120; Figure 3 There may be two first batteries 121, and the two first batteries 121 are respectively installed on the two temples 120; Figure 2 , two first batteries 121 can be installed on the frame 110; optionally, one of the first batteries 121 can be installed on one temple 120, and the other first battery 121 can be installed on the frame 110; optionally, one first battery 121 can be installed on the frame 110; the accompanying drawings only give some examples of the installation positions of the first batteries 121. In other embodiments, those skilled in the art can make adjustments as needed, and no specific limitation is made here.

[0037] Optionally, in some embodiments, the first battery 121 may be a rechargeable battery, optionally, interface charging, wireless charging, etc. may be adopted; optionally, in other embodiments, the first battery 121 may be a disposable replaceable battery, etc.; optionally, the first battery 121 may be of a size adapted to the shape of the frame 110 or the temple 120, optionally, the first battery 121 may include a single-core, multi-core, lithium battery, etc.; those skilled in the art may make selections and adjustments according to needs, and no specific limitations are made here.

[0038] Optionally, see Figure 1 to Figure 4 Optionally, the number of display modules 140 can be one. In the embodiment where the number of display modules 140 is one, the display module 140 can be installed in any one lens 130. Optionally, the first coil 150 can only surround the lens 130 where the display module 140 is located. In the embodiment where the number of display modules 140 is multiple, the multiple display modules 140 are configured to move in the first coil (150) of the lens 130. The multiple display modules 140 are detachably installed in at least one lens 130. The multiple display modules 140 can work independently. "Multiple" means at least two, such as two, three, four, etc. Optionally, the multiple display modules 140 can all be installed in any one lens 130. Optionally, the multiple display modules 140 can be installed in two lenses 130 respectively. The accompanying drawings only give some examples of display modules on the surface of the lens. In other embodiments, those skilled in the art can make selections and adjustments according to needs, which are not specifically limited here. Optionally, when the power required by multiple display modules 140 is the same, the number of turns of the second coils 141 of the multiple display modules 140 may be the same. Optionally, when the power required by multiple display modules 140 is different, the number of turns of the second coils 141 of the multiple display modules 140 may be different. The number of turns of the second coil 141 may be set according to the different power consumption of different display modules to adapt to different display modules.

[0039] Optionally, the near-eye display device 100 may include two lenses 130, each lens 130 corresponds to an eye field of view, the first coil 150 may surround the two lenses 130 at the same time, and the display module 140 is configured to move in the inner circle of the first coil 150; optionally, the lenses can be used for myopia glasses, hyperopia glasses, sunglasses, smart glasses, etc. The features of this part are within the understanding of those skilled in the art and will not be repeated here.

[0040] Optionally, the near-eye display device 100 may include only one lens 130, the lens 130 spans the field of view of two eyes, the first coil 150 surrounds the lens 130 and spans the field of view of two eyes, and the display module 140 is configured to be able to move within the inner circle of the first coil 150 or the outer circle of the first coil 150; optionally, the lens can be used for goggles and helmets, etc. The features of this part are within the understanding of those skilled in the art and will not be repeated here.

[0041] Optionally, the first coil 150 surrounds at least one lens 130. Optionally, please continue to refer to Figure 1 The first coil 150 only surrounds a lens 130 equipped with the display module 140. Figure 2 , the first coil 150 surrounds the two lenses 130 .

[0042] Optionally, the first coil 150 surrounds at least one lens 130. Optionally, please continue to refer to Figure 3 and Figure 4 The first coil 150 includes a first sub-coil 151 and a second sub-coil 152. The first sub-coil 151 and the second sub-coil 152 respectively surround one of the lenses 130 to form a loop. In some embodiments, the number of turns of the first sub-coil 151 and the second sub-coil 152 may be the same or different; in some embodiments, the first sub-coil 151 and the second sub-coil 152 are electrically isolated to avoid cross interference; in other embodiments, the first sub-coil 151 and the second sub-coil 152 may be electrically connected, and the first sub-coil 151 and the second sub-coil 152 may be connected in series or in parallel. Optionally, the first sub-coil 151 and the second sub-coil 152 can be electrically connected to the first batteries 121 installed on the two temples 120, respectively; optionally, the first sub-coil 151 and the second sub-coil 152 can be electrically connected to the two first batteries 121 installed on the frame 110, respectively; optionally, the first sub-coil 151 is electrically connected to the first battery 121 installed on the temple 120, and the second sub-coil 152 is electrically connected to the first battery 121 installed on the frame 110; optionally, the second The sub-coil 152 is electrically connected to the first battery 121 installed on the temple 120, and the first sub-coil 151 is electrically connected to the first battery 121 installed on the frame 110; optionally, the first sub-coil 151 and the second sub-coil 152 can also be electrically connected and electrically connected to the same first battery 121 installed on one temple 120; optionally, the first sub-coil 151 and the second sub-coil 152 can also be electrically connected and electrically connected to the same first battery 121 installed on the frame 110.

[0043] Optionally, the number of turns of the first coil 150 can be one turn or multiple turns. Optionally, the number of turns of the second coil 141 can be one turn or multiple turns. The number of turns of the coil can be determined according to the power required by the display module 140. The features of this part are within the scope of understanding of those skilled in the art and will not be elaborated here.

[0044] Optionally, the number of turns of the first sub-coil 151 and the second sub-coil 152 may be the same, in which case the first sub-coil 151 and the second sub-coil 152 have the same power output; optionally, the number of turns of the first sub-coil 151 and the second sub-coil 152 may be different, in which case the first sub-coil 151 and the second sub-coil 152 have different power outputs. The number of turns of the coil can be selected according to the power required by the display module 140 and the number of display modules 140. The features of this part are within the understanding of those skilled in the art and will not be elaborated here.

[0045] Optionally, please also refer to Figure 5 to Figure 7Optionally, the display module 140 further includes a coil support 148; the housing 143 is formed with a receiving cavity 145, and the optical component 146, the display unit 147, the coil support 148 and the second coil 141 are arranged in the receiving cavity 145; the second coil 141 is electrically connected to the display unit 147; the second coil 141 is arranged on the periphery of the coil support 148, and the second coil 141 surrounds in the height direction from the display unit 147 to the optical component 146. Specifically, the second coil 141 can be arranged in the thickness direction of the display module 140; optionally, the height of the coil support 148 is at least partially the same as that of the support 14 62. The sum of the heights of the display panel 1471 and the circuit board 1472 overlaps, and the surrounding height of the second coil 141 is greater than the distance between the display panel 1471, the circuit board 1472 and the distance between the two, so that the second coil 141 has more turns and can provide more power; optionally, the number of turns of the coil can be determined according to the power required by the display module 140, and the number of turns of the coil determines the height of the second coil 141 and the coil bracket 148 in the thickness direction of the display module 140: when the power required by the display module 140 is large, that is, the number of turns of the second coil 141 is large, the coil bracket 148 can completely surround the display unit 1 47 and the optical component 146, when the power required by the display module 140 is small, that is, the number of turns of the second coil 141 is small, the coil bracket 148 completely surrounds the display unit 147 and partially surrounds the optical component 146, or only completely surrounds the display unit 147, when the power required by the display module 140 is even smaller, that is, the number of turns of the second coil 141 is even smaller, the coil bracket 148 only partially surrounds the display unit 147, optionally, the coil bracket 148 may also partially surround the optical component 146, or completely surround the optical component 146, or completely surround the optical component 146 and partially surround the display unit 147, or The structure surrounded by the coil bracket 148 that completely surrounds the optical component 146 and the display unit 147 and whether it completely surrounds or partially surrounds can be determined according to the number of turns of the second coil 141. The number of turns of the second coil 141 can be determined according to the power required by the display module 140. The features of this part are within the understanding of those skilled in the art and will not be described in detail here. Only some embodiments are listed here, and the accompanying drawings only show an example of the second coil partially surrounding the display unit 147 and completely surrounding the optical component 146. In other embodiments, those skilled in the art can make selections and adjustments according to needs, and no specific limitations are made here.

[0046] The coil bracket 148 and the second coil 141 are arranged around the display unit 147 and / or the optical component 146, making full use of the circumferential space so that the height of the display module 140 in the thickness direction is relatively small; at the same time, the circumferential setting can adjust the number of coil turns according to the power required by the display module 140, providing a variety of options for the power of the display module 140.

[0047] Please continue reading Figure 6 Optionally, the display module 140 may further include a second battery 142; the second coil 141 is electrically connected to the second battery 142, so as to realize charging of the second battery 142, and then realize charging of the display module 140, ensuring that the display module 140 can be powered by the second battery 142 without the coil power supply. Optionally, the second battery 142 is disposed in the accommodating cavity 145 and is located at one end of the display unit 147 in the thickness direction close to the housing 143.

[0048] Optionally, see Figure 8 to Figure 10 Optionally, the display module 140 further includes a housing 143, an optical component 146, a display unit 147 and a cover plate 149; in some embodiments, the housing 143 and the cover plate 149 together form a receiving cavity 145, and in other embodiments, it can be understood that the cover plate 149 can be an integrally formed part of the housing 143 or two separate parts are finally connected to form a whole, and optionally, the cover plate can be located on the environment side 1301, and optionally, the cover plate can be located on the eye side 1302. The optical component 146, the display unit 147 and the second coil 141 are arranged in the receiving cavity 145; the second coil 141 is arranged in a flat shape as a whole, and the second coil 141 is arranged on the side of the circuit board 1472 away from the display board 1471, the second coil 141 is parallel to the circuit board 1472, and the second coil 141 is electrically connected to the display unit 147.

[0049] The second coil 141 is flatly arranged on the side of the circuit board 1472 away from the display panel 1471, which reduces the height of the display module 140 in the thickness direction, so that the display module 140 can be made thinner; at the same time, the cross-sectional size of the display module 140 is reduced, so that the proportion of the display module 140 occupying the surface of the lens 130 is small, which will not block the user's line of sight and hinder the user's viewing, thereby improving the user experience.

[0050] Please continue reading Fig. 9 Optionally, the display module 140 may also be provided with a second battery 142; the second coil 141 is electrically connected to the second battery 142, so as to realize charging of the second battery 142, and then realize charging of the display module 140, ensuring that the display module 140 can be powered by the second battery 142 without the coil power supply; the second battery 142 is arranged in the accommodating cavity 145, for example, it can be located on a side of the display unit 147, or on a side of the optical component 146, or on a side of the optical component 146 and the display unit 147 at the same time, the height of the second battery 142 in the thickness direction of the display module 140 can at least partially overlap with the thickness of the display module 140, and the second battery 142 can be provided in the accommodating cavity 145. Fig. 9-10 only gives a simple example of the second battery 142. Basic components such as the electrical connection part and other related structures are within the scope that can be understood by those skilled in the art and will not be described in detail here. In other embodiments, the shape and position of the second battery can be selected and adjusted according to needs.

[0051] The second battery 142 can be arranged on the side of the display unit 147 and / or the optical assembly 146, or the second battery 142 can be arranged on one end of the display unit 147 in the thickness direction close to the housing 143. When arranged on the side, the circumferential space can be fully utilized, so that the height of the display module 140 in the thickness direction is relatively small. Arranging on the end surface can reduce the circumferential width.

[0052] Optionally, a rectifier circuit may be provided on the circuit board 1472 to convert alternating current into direct current. A conversion circuit may also be provided on the circuit board 1472 to convert direct current into a suitable voltage or current for the display 14711 to operate. The features of this part are within the scope of understanding of those skilled in the art and will not be elaborated here.

[0053] Optionally, the display 14711 may include but is not limited to Micro-LED (Micro Light-Emitting Diode), Micro OLED (Micro Organic Light-Emitting Diode), LCOS (Liquid Crystal On Silicon), LCD (Liquid Crystal Display), DMD (Digital Micromirror Device) / DLP (Digital Light Processing) or LBS (Laser Beam Scanning), etc., or any combination of these.

[0054] Optionally, in some embodiments, the light output end of the shell 143 can be made of light-transmitting material, and in other embodiments, the light output end of the shell 143 can be dug with a hole for light transmission. Only some embodiments are listed here. In other embodiments, technical personnel in this field can make adjustments according to needs, and no specific limitations are made here.

[0055] Optionally, at least one of the first coil 150 and the second coil 141 is a transparent conductive material, optionally, the first coil 150 is a transparent conductive material, optionally, the second coil 141 is a transparent conductive material, optionally, both the first coil 150 and the second coil 141 are transparent conductive materials. Optionally, the transparent conductive material can be an oxide transparent conductive material, specifically zinc oxide, tin oxide, indium tin oxide, etc., oxide transparent conductive material is currently the most widely used transparent conductive material, with high transparency and conductivity; Optionally, the transparent conductive material can be a carbon nanotube transparent conductive material, specifically carbon nanotube, carbon nanotube transparent conductive material is a new type of material, with high conductivity, high transparency, high strength, excellent flexibility and other characteristics; Optionally, the transparent conductive material can be a conductive polymer material, conductive polymer is a material composed of conductive polymers, with good conductivity and flexibility. The coil is made of transparent conductive material, which not only meets the requirement of the first coil 150 and the second coil 141 to wirelessly induct and power the display module 140 , but also enables the coil to be integrated with the transparent lens 130 , thereby improving the appearance of the near-eye display device 100 .

[0056] In the near-eye display device provided in the embodiment of the present application, the display module can generate light and project it to the user's eye side, the display module can move freely on the lens, and at the same time, a first coil is provided in the circumference of the lens and a second coil is provided on the display module, the two are electromagnetically induced with each other, and the loop size formed by the second coil is smaller than the loop size formed by the first coil, thereby effectively reducing the influence of the coil on the field of view of the lens. The display module is powered by the first battery during the movement of the display module on the lens or at a fixed position in a preset area of ​​the lens, which can ensure that the display module can be powered to work whether it is dynamic or static on the lens, effectively avoiding the interference between the use of wired power supply and the free movement of the display module.

[0057] See also Fig.11 , Fig.11It is a schematic diagram of the overall structure of an embodiment of a charging box of the present application. The charging box 10 provided in the embodiment of the present application is used to charge the first battery 121 of the near-eye display device 100 of any of the above embodiments; the charging box 10 includes a box body 200 and the near-eye display device 100 of any of the above embodiments, the box body 200 includes a third coil 210 and a second electrical input interface 230, the second electrical input interface 230 and the third coil 210 are electrically connected, optionally, the first coil 150 can also be used as a power receiving end, and the third coil 210 as a power sending end, the first coil 150 and the third coil 210 are configured to wirelessly induct each other to charge the first battery 121 through the second electrical input interface 230; optionally, the second electrical input interface 230 can be a micro-USB interface, optionally, the second electrical input interface 230 can be a lightning interface, optionally, the second electrical input interface 230 can be a type-c interface.

[0058] In the charging box provided in the embodiment of the present application, the first coil acts as a power receiving end and wirelessly inducts with the third coil to charge the first battery, thereby improving the flexibility, convenience, and versatility of the charging box, thereby improving the user experience; at the same time, it avoids damage to the charging port of the near-eye display device caused by frequent plugging and unplugging of the charging cable, protects the interface of the near-eye display device, and extends the service life of the near-eye display device.

[0059] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A near-eye display device (100), characterized in that: The near-eye display device (100) comprises a lens (130), wherein the lens (130) comprises an eye side (1302) and an environment side (1301); A display module (140) configured to generate light and project it to the eye side (1302); A first battery (121) is arranged spaced apart from the display module (140); as well as A first coil (150) surrounds the lens (130), the first coil (150) is electrically connected to the first battery (121), and the first coil (150) forms at least one loop; The display module (140) is configured to move at a surface position of the lens (130); a second coil (141) is further provided on the display module (140); the loop size formed by the second coil (141) is smaller than the loop size formed by the first coil (150); the second coil (141) is configured to sense each other with the first coil (150); the sensing is configured so that the display module (140) is powered by the first battery (121) during the movement of the lens (130) or when the display module (140) is at any fixed position in a preset area of ​​the lens (130).

2. The near-eye display device (100) according to claim 1, characterized in that: The display module (140) further comprises a housing (143), an optical component (146) and a display unit (147); the optical component (146) is located at a light-emitting end of the display unit (147); and the second coil (141) is electrically connected to the display unit (147); The housing (143) is formed with a receiving cavity (145), and the optical component (146), the display unit (147) and the second coil (141) are arranged in the receiving cavity (145).

3. According to the near-eye display device (100) according to claim 2, the maximum cross-sectional dimension of the shell (143) does not exceed 12 mm, and the maximum cross-sectional dimension of the second coil (141) does not exceed 11 mm.

4. The near-eye display device (100) according to claim 2, characterized in that: The optical assembly (146) comprises an optical module (1461) and a bracket (1462) supporting the optical module; The display unit (147) comprises a display panel (1471) and a circuit board (1472) electrically connected to the display panel (1471); the display panel (1471) is provided with a display (14711) for generating light; the optical module (1461) is located at the light emitting end of the display (14711); the bracket (1462) and the optical module (1461) are located on a side of the display panel (1471) away from the circuit board (1472); and the second coil (141) is electrically connected to the circuit board (1472).

5. The near-eye display device (100) according to claim 4, characterized in that: The display module (140) further includes a coil support (148), wherein the coil support (148) at least partially surrounds the display unit (147) and / or the optical component (146), and the second coil (141) is arranged in the circumferential direction of the coil support (148), and the second coil (141) surrounds in the height direction from the display unit (147) to the optical component (146).

6. The near-eye display device (100) according to claim 5, characterized in that: The height of the coil support (148) at least partially overlaps with the sum of the heights of the support (1462), the display panel (1471) and the circuit board (1472), and the winding height of the second coil (141) is greater than the distance between the display panel (1471) and the circuit board (1472).

7. The near-eye display device (100) according to claim 4, characterized in that: The second coil (141) is arranged on a side of the circuit board (1472) away from the display panel (1471), and the second coil (141) is parallel to the circuit board (1472).

8. The near-eye display device (100) according to claim 2, characterized in that: The display module (140) further includes a second battery (142); the second battery (142) is located in the accommodating cavity (145); the second coil (141) is electrically connected to the second battery (142); and the second coil (141) is configured to charge the second battery (142).

9. The near-eye display device (100) according to claim 1, characterized in that: There are multiple display modules (140), and the multiple display modules (140) are configured to move within the first coil (150) of the lens (130). The multiple display modules (140) can work independently, and the number of turns of the second coil (141) of each display module (140) is the same, or the number of turns of the second coil (141) of each display module (140) is different.

10. The near-eye display device (100) according to claim 1, characterized in that: The near-eye display device (100) comprises two lenses (130), each of the lenses (130) corresponds to an eye field of view, the first coil (150) surrounds the two lenses (130) at the same time, and the display module (140) is configured to move within the inner circle of the first coil (150).

11. The near-eye display device (100) according to claim 1, characterized in that: The number of the lens (130) is one and spans two eye fields of view, and the first coil (150) surrounds the lens (130) and spans two eye fields of view.

12. The near-eye display device (100) according to claim 1, characterized in that: The near-eye display device (100) comprises two lenses (130), the first coil (150) comprises a first sub-coil (151) and a second sub-coil (152), the first sub-coil (151) and the second sub-coil (152) respectively surround one of the lenses (130) to form a loop, the number of the first batteries (121) comprises two, and the two first batteries (121) are respectively electrically connected to the first sub-coil (151) and the second sub-coil (152); Or the number of the first battery (121) is one, and the first sub-coil (151) and the second sub-coil (152) are electrically connected to the same first battery (121).

13. The near-eye display device (100) according to claim 1, characterized in that: The near-eye display device (100) further comprises temples (120) and a frame (110), wherein the temples (120) are connected to the frame (110), and there is at least one first battery (121), which is installed on the temples (120) and / or the frame (110); the frame (110) is used to fix the lens (130), and the first coil (150) is embedded in the frame (110) and / or the lens (130); the near-eye display device is further provided with a first electrical input interface, which is electrically connected to the first coil (150) and / or the first battery (121), and the first battery (121) comprises a rechargeable battery.

14. The near-eye display device (100) according to claim 1, characterized in that: At least one of the first coil (150) and the second coil (141) is made of a transparent conductive material.

15. A charging box (10) for charging a first battery (121) of a near-eye display device (100) according to any one of claims 1 to 14, characterized in that: The charging box (10) includes a box body (200) and the near-eye display device (100) according to any one of claims 1 to 14, the box body (200) includes a third coil (210) and a second electrical input interface, the second electrical input interface and the third coil (210) are electrically connected, and the first coil (150) and the third coil (210) are configured to wirelessly induct each other to charge the first battery (121) through the second electrical input interface.

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