Housing of electronic device, and electronic device assembly

Abstract

A housing (11) of an electronic device, and an electronic device assembly (1). The housing (11) of the electronic device comprises: a shell (111), wherein the shell (111) is provided with an accommodating space (1111), and an observation window (1113) and a projection window (1112) that are communicated with the accommodating space (1111), the accommodating space (1111) is configured to be suitable for arranging an electronic device (12), and the observation window (1113) and a display screen (121) of the electronic device (12) are arranged opposite to each other; and a projection assembly (112), located in the shell (111), wherein in a first plane projection, the projection assembly (112) and the observation window (1113) are spaced apart from each other, and light of the projection assembly (112) is configured to be transmitted by the projection window (1112). Since the projection assembly (112) is integrated in the shell (111), a user can perform projection operation at any time at any place without carrying an additional projector device; due to the presence of the observation window (1113), the user can still normally use the display screen (121) of the electronic device (12) while using the projection function, thereby obtaining rich and convenient interaction experience.

Description

Electronic device housing and electronic device assembly

[0001] The present application claims priority to the application for patent filed on April 19, 2024 with the China Patent Office and application number 2024208336664, entitled "Projection device"; the application for patent filed on April 19, 2024 with the China Patent Office and application number 2024104822704, entitled "Projection device"; the application for patent filed on May 11, 2024 with the China Patent Office and application number 2024105852904, entitled "Optical system for projection module and wearable device"; the application for patent filed on May 11, 2024 with the China Patent Office and application number 2024210542960, entitled "Wearable device"; the application for patent filed on April 26, 2024 with the China Patent Office and application number 2024209051826, entitled "Electronic device housing and electronic device assembly"; the application for patent filed on April 26, 2024 with the China Patent Office and application number 2024208971968, entitled "Electronic device housing and electronic device assembly"; the application for patent filed on June 25, 2024 with the China Patent Office and application number 2024214661564, entitled "Electronic device assembly"; all of the above are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of electronic devices, in particular to an electronic device housing and an electronic device assembly. BACKGROUND

[0003] The electronic device housing is a protective cover for electronic devices, but with the development of the times, its role has developed from protecting electronic devices to multiple functional uses. However, most of the protective cases for electronic devices currently only have the function of protecting electronic devices, which makes the existing electronic device protective cases lack interest and cannot improve market competitiveness. Therefore, how to improve the functionality and playability of the electronic device protective case has great significance for improving market competitiveness. SUMMARY

[0004] In order to solve the related defects of the prior art, the present application provides an electronic device housing and an electronic device assembly to solve the defects of insufficient functionality and playability of the electronic device housing in the prior art.

[0005] In a first aspect, an electronic device housing is provided, comprising:

[0006] A shell is provided with a containing space, and a viewing window and a projection window communicating with the containing space, the containing space is configured to be suitable for setting an electronic device, the viewing window is opposite to a display screen of the electronic device;

[0007] A projection assembly is located in the shell, in a first plane projection, the projection assembly and the viewing window are spaced apart, and light rays of the projection assembly are configured to be transmitted by the projection window.

[0008] In a second aspect, the present application provides an electronic device assembly, comprising an electronic device and a shell of the electronic device, the shell comprises: a shell provided with a containing space, and a viewing window and a projection window communicating with the containing space, the containing space is configured to be suitable for setting an electronic device, the viewing window is opposite to a display screen of the electronic device; a projection assembly is located in the shell, in a first plane projection, the projection assembly and the viewing window are spaced apart, and light rays of the projection assembly are configured to be transmitted by the projection window; the electronic device is located in the containing space, and the display screen of the electronic device is opposite to the viewing window.

[0009] In a third aspect, the present application provides a shell of an electronic device, comprising: a shell provided with a containing space, and a viewing window and a projection window communicating with the containing space, the containing space is configured to be suitable for setting an electronic device, the viewing window is opposite to a display screen of the electronic device; a projection assembly is located in the shell, in a first plane projection, the projection assembly and the viewing window are spaced apart, and light rays of the projection assembly are configured to be transmitted by the projection window; a battery is electrically connected to the projection assembly; a wireless charging coil is arranged on a bottom wall of the containing space, the wireless charging coil is configured to establish a wireless charging connection with the electronic device, and an electrical input interface is electrically connected to the battery and the wireless charging coil, the electrical input interface is configured to receive an external power supply and charge the battery, and the electrical input interface is also configured to receive an external power supply and charge the electronic device by the wireless charging coil.

[0010] In a fourth aspect, the present application provides an electronic device assembly, comprising: a protective sleeve, which is formed with a receiving cavity, and a viewing window and a projection window which are in communication with the receiving cavity, the area of the viewing window being greater than that of the projection window; an electronic device, which is arranged in the receiving cavity, and a display screen of the electronic device is arranged opposite to the viewing window; a projection assembly, which is mounted in the receiving cavity, and the projection assembly is arranged corresponding to the projection window, and the projection assembly is configured to project light through the projection window; a first battery, which is mounted in the protective sleeve; a second battery, which is electrically connected with the projection assembly to supply power to the projection assembly, and the first battery is configured to be electrically connected with the second battery to charge the second battery, and the electronic device is configured to be electrically connected with the second battery to charge the second battery.

[0011] The beneficial effects of the present application include: the shell of the electronic device and the electronic device assembly provided by the present application not only have the basic function of protecting the electronic device, but also integrate the projection function. It can be understood that since the projection assembly is integrated in the shell, the user does not need to carry an additional projector device, and can perform projection operation anytime and anywhere. At the same time, since the viewing window exists, the user can still normally use the display screen of the electronic device when using the projection function. The user can enjoy a more rich and convenient interactive experience when using the electronic device.

[0012] More related beneficial technical effects of the present application will be described in the following related embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creating laborious work.

[0014] Fig. 1 is a schematic diagram of an example of a use state of a projection device according to an embodiment of the present application;

[0015] Fig. 2 is a front view of an example of a projection device according to an embodiment of the present application;

[0016] Fig. 3 is an axial side view of an example of a projection device according to an embodiment of the present application;

[0017] Fig. 4 is a sectional view along A-A in Fig. 3;

[0018] Fig. 5 is a structural schematic diagram of an example of a projection module and a shell of a projection device according to an embodiment of the present application;

[0019] Fig. 6 is a structural schematic diagram of an example of a moving position of a projection device according to an embodiment of the present application;

[0020] Fig. 7(a)-(c) are structural schematic diagrams of three different examples of the projection module provided by the embodiments of the present application;

[0021] Fig. 8 is a structural schematic diagram of an example of the first electrical part provided by an embodiment of the present application;

[0022] Fig. 9 is a structural schematic diagram of another example of the first electrical part provided by an embodiment of the present application;

[0023] Fig. 10 is a structural schematic diagram of yet another example of the first electrical part provided by an embodiment of the present application;

[0024] Fig. 11 is a structural schematic diagram of still another example of the first electrical part provided by an embodiment of the present application;

[0025] Fig. 12 is a structural schematic diagram of an example of connecting the mobile projection device by the rotating member provided by an embodiment of the present application;

[0026] Fig. 13(a), (b) are structural schematic diagrams of different examples of the rotating member connection state of the projection module provided by the embodiments of the present application, respectively;

[0027] Fig. 14 is a structural schematic diagram of an example of the rotating member and the shell provided by an embodiment of the present application;

[0028] Fig. 15 is an axial side view of another example of the projection device provided by an embodiment of the present application;

[0029] Fig. 16 is a sectional view in the direction of B-B in Fig. 15;

[0030] Fig. 17(a) is a structural schematic diagram of an example of the rotating member and the shell in Fig. 16;

[0031] Fig. 17(b), (c) are different structural schematic diagrams of the example of connecting the rotating member and the second shell provided by an embodiment of the present application, respectively;

[0032] Fig. 18 is an optical path diagram one of the optical system for the projection module provided by an embodiment of the present application;

[0033] Fig. 19 is an optical path diagram two of the optical system for the projection module provided by an embodiment of the present application;

[0034] Fig. 20 is an optical path diagram three of the optical system for the projection module provided by an embodiment of the present application;

[0035] Fig. 21 is an optical path diagram four of the optical system for the projection module provided by an embodiment of the present application;

[0036] Fig. 22 is a structural schematic diagram of an embodiment of the belt provided by an embodiment of the present application;

[0037] FIG. 23 is a structural schematic diagram of another embodiment of a band provided by an embodiment of the present application;

[0038] FIG. 24 is a distributed system schematic diagram of a projection module provided by an embodiment of the present application;

[0039] FIG. 25 is an embodiment schematic diagram of a band opening of a projection module combined with a wearable device provided by an embodiment of the present application;

[0040] FIG. 26 is an embodiment schematic diagram of a projection module combined with a wearable device provided by an embodiment of the present application;

[0041] FIG. 27 is another embodiment schematic diagram of a projection module combined with a wearable device provided by an embodiment of the present application;

[0042] FIG. 28 is an embodiment schematic diagram of a wrist projection scenario of a projection device provided by an embodiment of the present application;

[0043] FIG. 29 is a modulation function (MTF) diagram of an optical system under different field angles provided by an embodiment of the present application;

[0044] FIG. 30 is an astigmatism curve and distortion diagram of an optical system provided by an embodiment of the present application;

[0045] FIG. 31 is a structural schematic diagram of an electronic device assembly provided by an embodiment of the present application;

[0046] FIG. 32 is one of exploded schematic diagrams of an electronic device assembly provided by an embodiment of the present application;

[0047] FIG. 33 is another of exploded schematic diagrams of an electronic device assembly provided by an embodiment of the present application;

[0048] FIG. 34 is a third of exploded schematic diagrams of an electronic device assembly provided by an embodiment of the present application;

[0049] FIG. 35 is one of structural schematic diagrams of a housing of an electronic device provided by an embodiment of the present application;

[0050] FIG. 36 is another of structural schematic diagrams of a housing of an electronic device provided by an embodiment of the present application;

[0051] FIG. 37 is a third of structural schematic diagrams of a housing of an electronic device provided by an embodiment of the present application;

[0052] FIG. 38 is a distributed system schematic diagram of a projection assembly provided by an embodiment of the present application;

[0053] FIG. 39(a)-(c) are a plurality of structural schematic diagrams of a housing of an electronic device provided by an embodiment of the present application;

[0054] FIG. 40 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0055] FIG. 41 is a system schematic diagram of an electronic device assembly according to an embodiment of the present application;

[0056] FIG. 42 is an embodiment schematic diagram of an electronic device assembly according to an embodiment of the present application in a hand back projection scenario;

[0057] FIG. 43 is a schematic diagram of the connection relationship of various components of an electronic device assembly according to an embodiment of the present application;

[0058] FIG. 44 is a schematic diagram of the positional relationship of various charging coils according to an embodiment of the present application. DETAILED DESCRIPTION

[0059] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0060] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0061] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0062] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited. The term "and / or", used to describe the association relationship of the associated objects, means that there can be three relationships; for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. In the present application, the reference "one embodiment" or "some embodiments" means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Thus, the phrases "one embodiment", "some embodiments", "another embodiment", "further embodiments" and the like appearing in the specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.

[0063] The electrical connection can include connection by wire, cable, welding, contact, etc. The electrical connection can achieve transmission of electrical energy or / and signal. Among them, A and B are directly connected by wire, cable, welding, contact, etc. In this case, the electrical connection between A and B is considered as direct electrical connection; A and B are provided with C, and the signal or current is transmitted to B in sequence through A and C. In this case, the electrical connection between A and B is considered as indirect electrical connection. In the present application, the electrical connection between A and B can be direct electrical connection between A and B, or indirect electrical connection between A and B.

[0064] The wearable device can be worn at a preset position of the user's limbs, and when the projection device is integrated on the wearable device, the wearable device can have a projection function. In some cases, the installation position of the projection device on the wearable device is relatively constant, and when projecting, the position of the projected image is also limited, which is not convenient for adapting to specific environments or use scenarios. When the projection module on the projection device moves, the power supply or signal transmission of the projection module will be affected.

[0065] The electronic device in the related embodiments of the present application can be a wearable device, which can be a bracelet, a ring, a watch, a watchband accessory, a watch sleeve, etc. The projection device can be applied to the above wearable devices.

[0066] Referring to FIGS. 1-17, an example of a projection device 10 is disclosed, including a housing 100, the housing 100 is provided with a receiving groove 140, a first side of the housing 100 is configured to allow the housing 100 to be sleeved on a wearer's hand 700, the first side can be a side in contact with the hand 700, i.e. the inner side, and the second side can be a side away from the hand 700, i.e. the outer side, the first side and the second side can be two opposite sides; wherein the hand 700 can be a wrist or a finger; a light-transmitting area 131 is provided on the housing 100, the light-transmitting area 131 can be an opening or a through hole on the housing 100, or the light-transmitting area 131 can be a light-transmitting or transparent protective sheet (not shown) provided on the opening, or the housing 100 is made of a light-transmitting material, and the light-transmitting area 131 is directly a part of the housing 100 itself; a shielding portion 132 is provided on the housing 100, the light-transmitting area 131 is adjacent to the shielding portion 132, the light-transmitting area 131 can have a circumferential arrangement along the housing 100, and the shielding portion 132 can have a circumferential arrangement along the housing 100, wherein the light-transmitting area 131 and the shielding portion 132 can be circumferentially arranged on the same side of the housing 100, or they can be respectively arranged on different sides of the housing 100. In other embodiments, the light-transmitting area 131 and the shielding portion 132 have a barrier, and they can still be understood as being adjacent to each other as long as the distance between them is not more than 10 mm. A projection module 200 is arranged in the receiving groove 140, the receiving groove 140 can be a notch, a groove or a recess structure, in some embodiments, the receiving groove 140 can also be in communication with the external environment, for example, a notch or the like formed on the outer ring wall 110 (described below) or the side wall 130 (described below) of the housing, in another embodiment, the receiving groove 140 can also be a sealed space formed by a plurality of walls. The space of the receiving groove 140 is larger than the projection module 200, so that the projection module 200 can move, slide or rotate in the receiving groove 140; wherein the projection module 200 is configured to move in the receiving groove 140 and move the projection module 200 to project light out of the light-transmitting area 131 to the wearer's hand, as shown in FIG. 1, the projection module 200 can project to form a projection contour 600 on the palm or the back of the hand 700, and of course, the projection module 200 can also be selected to project to the finger area to form a projection contour, the projection module 200 is also configured to move in the receiving groove 140 and move the projection module 200 to be at least partially shielded by the shielding portion 132. The shielding portion 132 is not light-transmitting or the light-transmitting rate of the shielding portion 132 is less than that of the light-transmitting area 131.It can be understood that the first planar projection can be a plane where the light-transmissive region 131 is located or a plane parallel to the plane where the light-transmissive region 131 is located, as viewed in the first planar projection direction. For example, the plane can be a plane where the sidewall 130 is located or a plane parallel to the plane where the sidewall 130 is located, as viewed in the first planar projection direction. The space of the receiving groove 140 can span the light-transmissive region 131 and the shielding portion 132. For example, the space of the receiving groove 140 can extend along the circumference of the housing 100. The space can allow the projection module 200 to be completely moved into the light-transmissive region 131. For example, the projection module 200 can be moved to any position in the middle of the light-transmissive region 131 or on either side of the light-transmissive region 131. The projection module 200 can also be moved to the boundary between the light-transmissive region 131 and the shielding portion 132. In this case, the projection module 200 can be at least partially shielded by the shielding portion 132. When the projection module 200 is at least partially shielded, the light emitted by the projection module 200 can be partially blocked. The projection module 200 can also be moved out of the light-transmissive region 131 and completely fall into the shielding portion 132. As viewed in the first planar projection direction, the projection module 200 can be completely shielded to be completely accommodated in the receiving groove 140 or another groove. When the projection module 200 completely falls into the shielding portion 132, the light emitted by the projection module 200 can be completely blocked. In some embodiments, the projection module 200 can be fixed, and the wall surface where the light-transmissive region 131 is located can be relatively moved. Alternatively, the wall surface where the light-transmissive region 131 is located and the projection module 200 can be synchronously moved, so that the relative position of the light-transmissive region 131 and the projection module 200 can be changed.

[0067] In some embodiments, when the projection module 200 is located in the light-transmissive region 131, the projection module 200 can be in a state of driving operation to project light. When the projection module 200 is located at the boundary between the light-transmissive region 131 and the shielding portion 132, the projection module 200 can be at least partially shielded by the shielding portion 132. In this case, the projection module 200 can be in a low-power-consumption state, for example, the projected light can be dimmed. When the projection module 200 completely falls into the shielding portion 132, the projection module 200 can be in a shutdown or sleep state, and no light is projected. Therefore, the power state of the projection module 200 can be controlled according to the relative position of the projection module 200, so that the power consumption of the projection module 200 can be effectively reduced in an easy-to-interact manner.

[0068] In some embodiments, the shielding portion 132 is opaque, and the area can be made of opaque material or coated with black opaque coating. It can be understood that the shielding portion 132 can be part of the main body of the shell 100, or the shielding portion 132 and the shell 100 are separately arranged and connected by adhesion, clamping, fasteners, etc. The shell 100 can be annular and form an annular cavity 160, for example, the shell 100 can be a closed annular structure, or an open annular structure, or a ring structure with a notch. The annular cavity 160 is used to accommodate the hand 700, for example, when the annular cavity 160 is large in size, it can accommodate the wrist, and when the size is small, it can accommodate the fingers, so it can be worn as a device such as a bracelet or a ring.

[0069] In some embodiments, the circumference of the shell 100 is not greater than 80 mm, and the outer contour of the annular cavity 160 is not greater than 80 mm, for example, it can be between 38 mm and 76 mm, so as to adapt to the fingers of different users, and the thickness of the shell is not greater than 8 mm, for example, it can be 2-5 mm, so as to avoid the discomfort caused by the thickness between the two fingers when worn on the fingers; in some embodiments, the thickness of the shell 100 gradually decreases in the circumferential direction D away from the light transmission hole 131, that is, the thickness of the active space of the projection module 200 is larger, and this thickness can include the slot space of the accommodation slot 140, but not the active range of the projection module 200, because the projection module 200 does not need to reach, so it can be as thin as possible, for example, in some embodiments, the thickness of the shell on both sides away from the light transmission area 131, such as the left and right sides in FIG. 2, is less than the thickness at the top light transmission area 131.

[0070] In some embodiments, referring to FIGS. 2-3, the contour of the first side of the shell 100 includes a circle, because the hand 700 (such as fingers, etc.) needs to be accommodated here, the circle can conveniently fit the hand 700 and reduce discomfort, and the contour of the second side away from the first side of the shell 100 includes a non-circle, it can be understood that because the size and thickness of the projection module 200 are thicker than the main control board or the battery of the projection device 10, the required space is larger, but considering that the thickness of the left and right sides is not too thick to cause the interval between the two fingers to be too large, the shell away from the light transmission area 132 can be made thinner, and finally the outer contour can not be circular, such as a racetrack or an elliptical shape, etc. In other embodiments, if the thickness of the left and right sides is allowed, the contour of the second side can also be circular design, the light transmission hole 131 and the shielding portion 132 are arranged along the circumferential direction D of the shell 100, the space of the accommodation slot 140 is larger than the projection module 200, and the projection module 200 is configured to allow movement in the space of the accommodation slot 140 along the circumferential direction D of the shell 100.

[0071] With continued reference to FIGS. 2-5, in some embodiments, the light-transmissive region 131 and the shielding portion 132 are located on the same side of the housing 100, and the light-transmissive region 131 and the shielding portion 132 do not overlap in the first planar projection, for example, the light-transmissive region 131 and the shielding portion 132 are both located on the same side of the housing but are adjacent and do not overlap, or the light-transmissive region 131 and the shielding portion 132 are located on different sides of the housing and do not overlap in the first planar projection, where the first planar projection can be a planar projection of the light-transmissive region 131 or a planar projection of the sidewall 130 of the housing 100 or a planar projection of parallel planes. The light-transmissive region 131 and the shielding portion 132 can be circumferentially arranged, and the shielding portion 132 can be located on two opposite sides of the light-transmissive region 131 in the circumferential direction. In the first planar projection, the light-transmissive region 131, the shielding portion 132, and the receiving slot 140 at least partially overlap, i.e., the length of the receiving slot 140 spans the light-transmissive region 131 and the shielding portion 132, thereby allowing the projection module 200 to move between the light-transmissive region 131 and the shielding portion 132.

[0072] The projection area of the projection module 200 relative to the light-transmissive region 131 is smaller than the area of the light-transmissive region 131, for example, the light-transmissive region 131 can include a ring shape such as a circular shape, a quadrilateral shape, a racetrack shape, or an elliptical shape, and the projection module 200 can have a cylindrical or prismatic shape, and thus the outer contour of the projection module 200 in the first planar projection can be a circular shape, an elliptical shape, or a quadrilateral shape, and the projection area of the projection module 200 is smaller than the area of the light-transmissive region 131, thereby ensuring that the projection module 200 can be moved to the light-transmissive region 131 to achieve complete projection of light. The projection area of the projection module 200 relative to the shielding portion 132 is smaller than the area of the shielding portion 132, where the shielding portion 132 includes a ring shape such as a circular shape, a quadrilateral shape, a racetrack shape, or an elliptical shape, or other shapes such as an arc shape, and thus the projection module 200 can be sufficiently shielded by the shielding portion 132 due to the projection area of the projection module 200 relative to the shielding portion 132 being smaller than the area of the shielding portion 132.

[0073] Referring to FIG. 4, the projection module 200 includes a display assembly 210, an optical assembly 220, and a sleeve 230 (also referred to as a second housing 230 in the embodiments of the present application). The display assembly 210 is configured to generate light, the optical assembly 220 is disposed on the light exit side of the display assembly 210 and receives the light, and the sleeve 230 is disposed on the outside of the optical assembly 220 and / or the display assembly 210. The sleeve 230 can be disposed on the outside of the optical assembly 220, or on the outside of the display assembly 210, or on the outside of both the optical assembly 220 and the display assembly 210. The optical assembly 220 can be an optical lens or a combination of optical lenses. The display assembly 210 can be a micro display 212 configured to provide display content for a device. The micro display 212 can include, but is not limited to, a Micro-LED (Micro Light-Emitting Diode), a Micro-oled (Micro Organic Light-Emitting Diode), an LCoS (Liquid Crystal On Silicon), an LCD (Liquid Crystal Display), a DMD (Digital Micromirror Device) / DLP (Digital Light Processing), or an LBS (Laser Beam Scanning), or any combination of these technologies. The second electrical part 412 is electrically connected to the display assembly 210 and at least partially exposed relative to the second housing (or sleeve) 230. It can be understood that the optical assembly 220 can adopt the optical scheme of the refractive lens assembly 320 and the mirror 330 in the related embodiments (described below) of the present application. For details, refer to the description of the related embodiments. Of course, other ultra-short focus or miniature optical schemes can also be adopted, which will not be described here.

[0074] The optical assembly 220 forms a light exit surface 221; the opening area of the light transmission region 131 is greater than the area of the light exit surface 221, and the area of the shielding portion 132 is greater than the area of the light exit surface 221; it can be understood that the overall projection module 200 can be irregular in shape, for example, the light exit surface 221 is small in size, and the area away from the light exit surface 221 is large in size because the display assembly 210 needs to be placed, thus forming a non-cylindrical shape. Considering that the projection module 200 only needs the light exit surface 221 to emit light, it is only necessary that the area of the light transmission region 131 is greater than the area of the light exit surface 221, and the area of the shielding portion 132 is greater than the area of the light exit surface 221, without considering the size of the area other than the light exit surface 221. In some embodiments, the light exit surface 221 can be eccentrically arranged relative to the sleeve 230, thereby facilitating the design of the light exit angle. In another embodiment, the light exit surface 221 can be coaxially arranged relative to the central axis of the sleeve 230.

[0075] In some embodiments, the projection device further comprises a light transmission protective sheet, which is arranged on the light transmission region 131. For example, the light transmission region 131 can be an opening structure. The protective sheet can be used to protect the projection module 200 and prevent foreign matter from entering the accommodation cavity through the light transmission region 131, thereby reducing the risk of damage to the optical assembly 220 by external factors.

[0076] Please refer to FIGS. 2 to 15, the housing 100 can include an outer ring wall 110, an inner ring wall 120, and a side wall 130. The side wall 130 can include two oppositely arranged side walls, for example, front and rear side walls 130. The outer ring wall 110, the inner ring wall 120, and the side wall 130 can be injection molded or machined, or the above-mentioned walls can be fixed to form the housing 100 by adhesion or fixing members. The inner ring wall 120 is located on the first side of the housing 100, and the inner ring wall 120 is spaced apart from the outer ring wall 110. The inner ring wall 120 is configured to contact the wearer's hand 700; and the side wall 130 is connected to the outer ring wall 110 and / or the inner ring wall 120. The accommodation groove 140 can be formed by the side wall 130 and / or the outer ring wall 110, for example, can be surrounded by the outer ring wall 110, the inner ring wall 120, and the side wall 130, or a recess can be formed on the outer ring wall 120 to form the accommodation groove 140, or a recess can be formed on the side wall 130 to form the accommodation groove 140. In the present example, the outer ring wall 110 can be a side surface of the housing 100 opposite to the inner ring wall 120. The outer ring wall 110 is spaced apart from the inner ring wall 120. The outer ring wall 110 is annularly arranged outside the inner ring wall 120, and a gap is formed between the outer ring wall 110 and the inner ring wall 120. The side of the inner ring wall 120 away from the outer ring wall 110 forms an annular cavity 160 for accommodating fingers or wrists. The annular cavity 160 can be a regular circular cavity, and the annular cavity 160 can also be irregular in shape.

[0077] The side wall 130 is connected to the outer ring wall 110 and the inner ring wall 120. The side wall 130 can be directly connected to the outer ring wall 110 and the inner ring wall 120, or the side wall 130 can be connected to the outer ring wall 110 and the inner ring wall 120 through an intermediate connecting piece. In the example, the side wall 130 is fixedly connected to the outer ring wall 110 and the inner ring wall 120. Alternatively, the side wall 130 can be movably connected to the outer ring wall 110 and the inner ring wall 120. The number of side walls 130 is at least one. In the example, the number of side walls 130 is two. The two side walls 130 can be spaced apart or parallel. The side wall 130, the outer ring wall 110, and the inner ring wall 120 form the accommodation groove 140. The accommodation groove 140 can have a substantially annular structure. The accommodation groove 140 serves as a space for mounting the projection module 200 on the projection device.

[0078] In some embodiments, the housing 100 includes an outer ring wall 110, an inner ring wall 120, and a side wall 130. The inner ring wall 120 is located on the first side of the housing 100 and is spaced apart from the outer ring wall 110. The inner ring wall 120 is configured to contact the wearer's hand 700. The side wall 130 is connected to the outer ring wall 110 and / or the inner ring wall 120. The accommodation groove 140 is formed by the side wall 130 and / or the outer ring wall 110. For example, the accommodation groove 140 can be formed by the three walls, or a recess or notch can be formed in the side wall 130 or the outer ring wall 110.

[0079] The light-transmitting region 131 is provided on the side wall 130 or the outer ring wall 110, and the shielding portion 132 is provided on the side wall 130 or the outer ring wall 110. The light-transmitting region 131 and the shielding portion 132 are located on different sides of the housing 100. For example, the shielding portion 132 is located on the outer ring wall 110, and the light-transmitting region 131 is located on the side wall 130. Therefore, the position of the projection module 200 relative to the light-transmitting region 131 and the shielding portion 132 can be adjusted by non-circumferential rotation.

[0080] Please refer to FIGS. 3-4 or 15-16, the projection module 200 moves to the projection inside the light-transmitting area 131 and projects light out of the light-transmitting area 131, which means that the light-transmitting area 131 can be used for the light beam of the projection module 200 to penetrate, that is, when the projection module 200 moves to the position of the light-transmitting area 131, the light beam can pass through the light-transmitting area 131 and project towards a preset direction. In the example, the light-transmitting area 131 and the shielding part 132 are arranged on the side wall 130, and the optical axis direction L of the projection module 200 is parallel to the axial direction 2a of the shell 100; in other embodiments, the light-transmitting area 131 and the shielding part 132 are arranged on the outer ring wall 110, and the optical axis direction L of the projection module 200 is perpendicular to the axial direction 2a of the shell 100; in some other embodiments, the optical axis L can also be perpendicular to the axial direction 2a or arranged at an angle, so that the light beam emitted by the projection module 200 can be output to a preset position through the light-transmitting area 131. The first plane can also refer to a reference plane perpendicular to the optical axis L of the projection module 200, and the projection module 200 and the light-transmitting area 131 are projected into the reference plane along the optical axis L of the projection module 200. When the projection module 200 is located in the projection of the light-transmitting area 131, the light beam emitted by the projection module 200 can pass through the light-transmitting area 131 and transmit outward. For example, as shown in FIG. 1, the projection device can project a light beam towards a palm position to form a projection contour 600.

[0081] In the example, the projection module 200 can be arranged to move relative to the light-transmitting area 131, so that the user can adjust the position of the projection module 200 as needed, flexibly adjust the position of the projection contour 600 generated by the projection module 200, improve the flexibility of the projection result of the projection device, and at the same time, the projection module 200 can be shielded by the shielding part 132 to be opaque, so as to realize the hidden storage of the projection module, reduce the damage probability of the projection module, and facilitate the use of the projection device 10 as a smart wearable device without easily producing a strange feeling in appearance, and facilitate the use of the device in more scenarios.

[0082] The side wall 130 can be a wall surface perpendicular to the light-emitting direction of the projection module 200. In the example, the side wall 130 is provided with the light-transmitting area 131, so that the light beam emitted by the projection module 200 can be output through the side wall 130. In the example, the light-emitting direction (optical axis L) of the projection module 200 can be parallel to the axial direction 2a of the inner ring wall 120, or can be arranged at an angle with the axial direction 2a of the inner ring wall 120. The display assembly 210 in the example can include a circuit board 211 and a micro display 212, and the circuit board 211 and the micro display 212 are electrically connected. The circuit board 211 can include, for example, a voltage or driving circuit.

[0083] In some embodiments, as shown in FIG. 5, the light-transmitting region 131 can be a through hole passing through one of the side walls 130 in the thickness direction of the side wall 130. The opening area of the light-transmitting region 131 is greater than the area of the light emitting surface 221, which means that the total area of the light-transmitting region 131 on the side wall 130 is greater than the total area of the light emitting surface 221. When the projection module 200 moves relative to the shell 100, the relative position of the projection module 200 and the light-transmitting region 131 can change. When the opening area of the light-transmitting region 131 is greater than the area of the light emitting surface 221, the light emitting surface 221 of the projection module 200 changes its position relative to the light-transmitting region 131, as long as there is an overlap between the projection of the light-transmitting region 131 and the light emitting surface 221, the light beam output from the light emitting surface 221 can be output through the light-transmitting region 131. In the example, when the light emitting surface 221 is completely misaligned with the light-transmitting region 131, the light beam output from the light emitting surface 221 cannot be output through the light-transmitting region 131, so that the projection module 200 is completely blocked by the shielding part 132, and at this time the projection module 200 can be in a storage state.

[0084] In some examples, the light-transmitting region 131 is arranged on the side wall 130, and the light-transmitting region 131 extends circumferentially along the side wall 130, for example, the length direction of the light-transmitting region 131 on the side wall 130 can be arc-shaped, and the length of the light-transmitting region 131 is greater than the length of the light emitting surface 221. The length of the light-transmitting region 131 being greater than the length of the light emitting surface 221 can mean that the length of the light-transmitting region 131 along the circumferential direction of the side wall 130 is greater than the length of the light emitting surface 221 along the circumferential direction of the side wall 130. In the example, the length of the light-transmitting region 131 is greater than the length of the light emitting surface 221, so that the projection module 200 can project at multiple positions in the light-transmitting region 131, and thus the projection position of the projection module 200 relative to the shell 100 in the circumferential direction can be flexibly adjusted to meet the projection requirements under multi-angle wearing.

[0085] In some examples, referring to FIG. 6 or 12, the shielding part 132 is located at both ends of the light-transmitting region 131, of course, the shielding part 132 can also be located at one end of the light-transmitting region 131, or the shielding part 132 can also be located at the entire circumferential direction of the light-transmitting region 131. In some embodiments, the accommodation groove 140 has a first end 141 and a second end 142 along the circumferential direction of the shell 100, and the projection module 200 is movably arranged in the accommodation groove 140 between the first end 141 and the second end 142. A plane perpendicular to the axial direction of the shell 100 is defined as a first plane, and in the projection of the projection module 200 and the side wall 130 in the first plane, when the projection module 200 is at the first end 141, the light emitting surface 221 at least partially overlaps with the side wall 130.

[0086] The accommodating groove 140 has a length direction, wherein the length direction of the accommodating groove 140 is consistent with the circumferential direction of the shell 100. The accommodating groove 140 has a first end 141 and a second end 142 along the circumferential direction of the shell 100, and the first end 141 and the second end 142 are arranged in a spaced manner. When the projection module 200 moves relative to the shell 100, the projection module 200 moves between the first end 141 and the second end 142. The first plane is defined as a plane perpendicular to the axial direction of the shell 100. For example, as shown in FIG. 2, the axial direction of the shell 100 can be the first direction 2a, and the first plane is a plane perpendicular to the first direction 2a.

[0087] When the projection module 200 and the side wall 130 project in the first direction into the first plane, in the projection plane, when the projection module 200 is at the first end 141, the light emitting surface 221 at least partially overlaps the side wall 130, so that at least part of the light emitting surface 221 is blocked by the side wall 130. In this example, when the side wall 130 partially blocks the light emitting surface 221, the projection module 200 can partially emit light or not emit light. When the side wall 130 completely blocks the light emitting surface 221, the light beam output by the projection module 200 can be completely blocked and not emit light. Of course, when the side wall 130 is a light-transmissive material, the projection module 200 can be set to a storage state when the projection module 200 is moved to the first end 141. At this time, whether the projection module 200 needs to emit light can be controlled by using an external button or the like.

[0088] In some examples, different from the previous example, when the projection module 200 is at the second end 142, the light emitting surface 221 at least partially overlaps the side wall 130. When the projection module 200 and the side wall 130 project in the first direction into the first plane, in the projection plane, when the projection module 200 is at the second end 142, the light emitting surface 221 at least partially overlaps the side wall 130, so that at least part of the light emitting surface 221 is blocked by the side wall 130. In this example, when the side wall 130 partially blocks the light emitting surface 221, the projection module 200 can partially emit light. When the side wall 130 completely blocks the light emitting surface 221, the light beam output by the projection module 200 can be completely blocked. In this example, when the side wall 130 is a light-transmissive material, the projection module 200 can be set to a storage state when the projection module 200 is moved to the second end 142.

[0089] In some examples, referring to FIG. 15, the projection device further comprises a rotating member 301 connected to the sleeve (or the second housing) 230, the rotating member 301 is at least partially exposed relative to the outer surface of the housing 100, and the rotating member 301 is configured to allow movement relative to the housing 100. The sleeve 230 can be a cylindrical structure sleeved outside the optical assembly 220 or the display assembly 210. At least one of the optical assembly 220 and the display assembly 210 in the present example can be located inside the sleeve 230. The sleeve 230 can serve as an intermediate connecting member between at least one of the display assembly 210 and the optical assembly 220 and the housing 100. In the present example, the sleeve 230 can be fixedly connected to the optical assembly 220 and / or the display assembly 210, or can be detachably connected.

[0090] Referring to FIGS. 15-17, the rotating member 301 is connected to the sleeve 230 so that the rotating member 301 can move synchronously with the sleeve 230. The rotating member 301 is at least partially exposed relative to the outer surface of the housing 100, which means that the rotating member 301 is in a visible state from the outside of the housing 100. The rotating member 301 is configured to allow movement relative to the housing 100, which means that the rotating member 301 and the housing 100 can move relative to each other, including a case where one of the rotating member 301 and the housing 100 is in a relatively fixed state and the other is movable in a predetermined direction, and a case where the rotating member 301 and the housing 100 can simultaneously move in respective predetermined directions. In the present example, by providing the rotating member 301, the user can realize the relative movement of the projection module 200 and the housing 100 by operating the rotating member 301, thereby adjusting the relative position of the projection module 200 and the housing 100, or adjusting the light output position of the projection module 200. In some embodiments, the outer surface of the rotating member 301 can also be provided with friction threads or the like, which is conducive to user operation.

[0091] In some examples, referring to FIGS. 12, 15-17, the rotating member 301 comprises an arc-shaped segment or a ring-shaped segment extending along the circumference of the inner ring wall 120, and the rotating member 301 is configured to allow rotation relative to the housing 100, and the rotating stroke of the rotating member 301 is greater than or equal to the length of the light-transmitting area 131. The rotating member 301 is an arc-shaped segment or a ring-shaped segment extending along the circumference of the inner ring wall 120, which means that the rotating member 301 can be in the shape of a long strip, the length direction of the rotating member 301 is arranged along the circumference of the inner ring wall 120, and the bending curvature of the rotating member 301 can be close to or the same as the curvature of the corresponding position of the inner ring wall 120. The rotating member 301 can be in the shape of an arc-shaped long strip or a ring-shaped long strip. When the rotating member 301 is in the shape of a ring-shaped long strip, the rotating member 301 can be in a closed ring structure, or the rotating member 301 can be in a local ring structure that is not closed. In this example, the rotating stroke of the rotating member 301 is greater than or equal to the length of the light-transmitting area 131, which means that the geometric center of the rotating member 301 or the maximum displacement of the rotating member 301 moving left and right along the circumference of the inner ring wall 120 is greater than or equal to the total length of the light-transmitting area 131 along the circumference of the inner ring wall 120. In this example, when the rotating member 301 moves along the circumference of the inner ring wall 120, the sleeve 230 can be driven to move synchronously, so that the projection module 200 can be moved to a preset position. When the projection module 200 moves to the first end 141 or the second end 142 of the accommodating groove 140 as described in the above example, the projection module 200 can be blocked by the housing 100, so that the projection module 200 can be partially lighted or completely blocked, thereby facilitating the storage of the projection module 200.

[0092] In some examples, referring to FIG. 16, the rotating member 301 is provided with a first guide part 303, and the housing 100 is provided with a second guide part 150 on the side facing the accommodating groove 140. The first guide part 303 is configured to be positioned and connected to the second guide part 150 at all times when the rotating member 301 rotates relative to the housing 100.

[0093] The first guide part 303 is connected to the rotating member 301. In this example, the first guide part 303 can be integrally arranged with the rotating member 301, or the first guide part 303 can be separately arranged with the rotating member 301 and connected to each other. The second guide part 150 is arranged on the housing 100. In this example, the first guide part 303 and the second guide part 150 can be a sliding rail and a sliding groove matched with each other. In this example, when the rotating member 301 rotates relative to the housing 100, the first guide part 303 is always positioned and connected to the second guide part 150, which means that the first guide part 303 and the second guide part 150 can always play the role of limiting and guiding each other, so that the rotating member 301 can move along the preset track formed by the first guide part 303 and the second guide part 150.

[0094] In some examples, referring to FIGS. 3-6 and 13-14, the rotating member 301 is arranged on the outer ring wall 110 and at least partially exposed relative to the outer ring wall 110. The outer ring wall 110 includes a first sub-outer ring wall 1101 and a second sub-outer ring wall 1102, and the rotating member 301 is arranged between the first sub-outer ring wall 1101 and the second sub-outer ring wall 1102 and spaced apart from the first sub-outer ring wall 1101 and the second sub-outer ring wall 1102. The rotating member 301 is configured to rotate relative to the first sub-outer ring wall 1101 and / or the second sub-outer ring wall 1102.

[0095] Referring to FIG. 14, the outer ring wall 110 can include a first sub-outer ring wall 1101 and a second sub-outer ring wall 1102. In the present example, the first sub-outer ring wall 1101 and the second sub-outer ring wall 1102 can be two annular structures arranged in the axial direction of the housing 100 and spaced apart from each other. The rotating member 301 can be arranged in the space formed between the first sub-outer ring wall 1101 and the second sub-outer ring wall 1102, and can move along the circumferential direction of the housing 100 in the gap formed between the first sub-outer ring wall 1101 and the second sub-outer ring wall 1102. By forming the first sub-outer ring wall 1101 and the second sub-outer ring wall 1102, the rotating member 301 can be easily limited, so that the rotating member 301 can be limited to a predetermined position outside the outer ring wall 110.

[0096] In some examples, the outer ring wall 110 is provided with a first engaging portion 151, and the rotating member 301 is provided with a second engaging portion 305. When the rotating member 301 moves to a predetermined position, the first engaging portion 151 is used to connect with the second engaging portion 305. In the present example, the first engaging portion and the second engaging portion 305 can be buckles, magnetic modules, or other structures that can keep the rotating member 301 and the outer ring wall 110 in a current state. Taking the magnetic module as an example, one of the first engaging portion and the second engaging portion 305 can be a magnet, and the other can be a magnetizable structure, such as a magnet or a ferromagnetic object. When the rotating member 301 moves to a predetermined position, the first engaging portion and the second engaging portion 305 can be attracted to each other, so that the rotating member 301 can be kept in a stable state at the current predetermined position. In the present example, the predetermined position can be the position of the first end 141 or the second end 142 of the accommodating groove 140, or any other position between the first end 141 and the second end 142.

[0097] In some examples, the rotating member 301 is arranged on the inner ring wall 120 and is part of the inner ring wall 120, and the rotating member 301 is configured to be sleeved and fitted on the hand of the wearer, and the rotating member 301 is rotationally connected with the side wall 130. The rotating member 301 can be an integral structure with the inner ring wall 120, and when the projection device is worn on the hand, the rotating member 301 can be directed towards the hand of the wearer, so that the rotating member 301 can be fitted on the hand of the wearer. The rotating member 301 is rotationally connected with the side wall 130, which means that the rotating member 301 can rotate relative to the side wall 130, so that when the user rotates the rotating member 301, the rotating member 301 can move synchronously with the projection module 200.

[0098] Please refer to FIGS. 7, 12 and 13, in some examples, the projection device further comprises an electrical component 400 and an electrical connector 410, the electrical component 400 is located in the accommodating groove 140, the electrical component 400 comprises an electrically connected battery and a main control board, the battery and the main control board are arranged along the circumference of the inner ring wall 120; the electrical connector 410 is electrically connected with the display component 210 and the electrical component 400, the sleeve 230 and the main control board are arranged in a spaced manner, and the projection device further comprises a sensor 500, the sensor 500 is arranged in a spaced manner with the projection module 200 and is electrically connected to the main control board, and the sensor 500 is at least partially exposed relative to the inner ring wall 120 and is configured to detect the vital signs of the wearer. The sensor 500 can be a contact sensor 500, which can be used to detect the blood pressure, pulse or other vital signs of the user. The sensor 500 is at least partially exposed from the inner ring wall 120, so that the sensor 500 can be in contact with the skin of the user to obtain the vital signs of the user.

[0099] The electrical component 400 is installed in the accommodating groove 140, so that the electrical component 400 is received inside the shell 100. The electrical component 400 comprises a battery, a main control board and a sensor 500, wherein the battery can be used to power the main control board, the projection module 200 and the sensor 500. In the present example, the sleeve 230, the battery, the sensor 500 and the main control board are arranged along the circumference of the inner ring wall 120, and the battery, the sensor 500 and the main control board can also be arranged in other orders.

[0100] In some examples, referring to FIGS. 4, 6, 12 and 16, the electrical connector 410 comprises a redundant length section, and the electrical connector 410 can comprise a flexible wire, the length of the redundant length section is greater than or equal to the moving stroke of the projection module 200 relative to the accommodating groove 140, that is, the length of the wire of the electrical connector 410 is adjustable. In the present example, when the projection module 200 moves relatively, the length of the electrical connector 410 is adapted to the position of the projection module 200 to power or communicate with the projection module 200.

[0101] In some examples, referring to FIGS. 1-11, the electrical connector 410 includes a first electrical part 411 electrically connected to the electrical component 400, and a second electrical part 412 electrically connected to the projection module 200, the first electrical part 411 and the second electrical part 412 being electrically connected.

[0102] The first electrical part and the second electrical part in the present example can be two parts of a connection structure such as a wire or a flexible circuit board 211, and the first electrical part and the second electrical part can be separately provided and electrically connected to each other.

[0103] Referring to FIGS. 7-11, in some examples, the projection module 200 is movably connected to the housing 100 between a first position and a second position, the first position and the second position being arranged along a circumferential direction of the housing 100, one of the first electrical part 411 and the second electrical part 412 is a conductive rail arranged along the circumferential direction of the housing 100, and the other is a conductive bump, the conductive bump being slidably connected to the conductive rail.

[0104] The projection module 200 can be moved between the first position and the second position, so that the relative position between the projection module 200 and the housing 100 can be changed, and thus the position of the projection profile 600 of the projection module 200 can be changed. The first position and the second position are arranged along the circumferential direction of the housing 100, so that when the projection module 200 is moved between the first position and the second position, the projection module 200 can be moved in position relative to the circumferential direction of the housing 100.

[0105] One of the first electrical part 411 and the second electrical part 412 is a conductive rail arranged along the circumferential direction of the housing 100, the conductive rail can be a metal piece or a conductive structure formed by a metal coating arranged along the circumferential direction of the housing 100.

[0106] The conductive bump can be a bump or a metal ball formed by a metal piece. When the projection module 200 is relatively displaced from the housing 100 in the present example, the conductive bump can be slidably connected to the conductive rail, so that the projection module 200 and the electrical component 400 can be electrically connected.

[0107] Referring to FIGS. 1-17, an example of a projection device is disclosed, including a first housing 100, a projection module 200, an electrical component 400, a first electrical part 411, and a second electrical part 412. The first housing 100 is provided with a receiving groove 140. The projection module 200 is located in the receiving groove 140. The electrical component 400 is located in the first housing 100 and electrically connected to the projection module 200. The first electrical part 411 is electrically connected to the electrical component 400 and extends along the circumference of the first housing 100. The second electrical part 412 is electrically connected to the projection module 200. The receiving groove 140 includes a first position and a second position, which are arranged along the circumference of the first housing 100. The projection module 200 is configured to move between the first position and the second position while maintaining electrical connection between the first electrical part 411 and the second electrical part 412. It can be understood that the electrical connection herein can mean electrical conduction, for example, the first electrical part 411 and the second electrical part 412 can be in physical and mechanical contact with each other, and when powered on, the first electrical part 411 and the second electrical part 412 can be electrically conductive. In other embodiments, the first electrical part 411 and the second electrical part 412 can also be electrically conductive, such as magnetic induction.

[0108] In some embodiments, when the projection module 200 is located in the light transmission area 131, the first electrical part 411 and the second electrical part 412 maintain electrical connection, and the projection module 200 can be in a state of driving work to project light. When the projection module 200 is located at the junction of the light transmission area 131 and the shielding area 132, the projection module 200 is at least partially shielded by the shielding area 132, and the projection module 200 can be in a low-power state, for example, the projected light is dimmed. When entering the shielding area 132 completely, the first electrical part 411 and the second electrical part 412 maintain electrical disconnection, and can be in a shutdown or sleep state, at which time no light is projected. Therefore, the power state of the projection module 200 can be controlled according to the relative position of the projection module 200, so as to effectively reduce the power consumption of the projection module 200 in an easy-to-interact manner.

[0109] In some embodiments, the area of the light transmission area 131 is greater than the area of the light emitting surface 221, and the area of the shielding area 132 is greater than the area of the light emitting surface 221. Referring to FIG. 7, the conductive block 412a is at least partially exposed relative to the second housing 230, and the conductive rail 411a is at least partially exposed relative to the receiving groove 140. The second housing 230 is configured to move relative to the light transmission area 131 and maintain electrical connection between the conductive block 412a and the conductive rail 411a. In some embodiments, the conductive block 412a can also be elastically stretched relative to the second housing 230, so as to ensure more stable electrical contact when slidingly fitted with the conductive rail 411a.

[0110] In some embodiments, the length of the conductive rail 411a spans the light-transmissive region 131 and the shielding region 132. That is, the projection module 200 can always maintain mechanical contact between the conductive block 412a and the conductive rail 411a when the projection module 200 moves between the light-transmissive region 131 and the shielding region 132, and then the electrical on-off control can be achieved by controlling the switch and the like.

[0111] The electrical component 400 can be a control module for controlling the operation of the projection module 200, or a power supply module for supplying power to the projection module 200, etc. In the example, the electrical component 400 is mounted on the first housing 100, and can be embedded in the gap in the first housing 100. The first electrical part 411 is connected to the electrical component 400, which means that the first electrical part 411 can transmit communication signals and / or circuit on-off with the electrical component 400. The second electrical part 412 is connected to the projection module 200, which means that the second electrical part 412 can transmit communication signals and / or circuit on-off with the projection module 200.

[0112] Referring to FIG. 6, the accommodating groove 140 has a first position and a second position, which can be two parts in the accommodating groove 140 spaced apart in a predetermined direction. In the example, the first position and the second position can be two positions in the circumferential direction of the first housing 100. In some examples, the projection module 200 has an outcoupling surface 221, and the outcoupling surface 221 of the projection module 200 can face the outside of the first housing 100, for projecting a light beam to a predetermined position outside the first housing 100. For example, the projection module 200 projects a light beam on a palm, and a projection contour 600 is formed on the palm. When the projection module 200 moves between the first position and the second position relative to the first housing 100, the position of the projection contour 600 also changes, and thus the position and size of the projection contour 600 can be changed.

[0113] The projection module 200 is arranged in the accommodation groove 140, and the projection module 200 can move relatively in the accommodation groove 140. In the example, when the projection module 200 moves between the first position and the second position in the accommodation groove 140, the first electrical part 411 and the second electrical part 412 remain electrically connected, which means that the first electrical part 411 and the second electrical part 412 can be in contact with each other or connected with each other when the projection module 200 moves between the first position and the second position, and the first electrical part 411 and the second electrical part 412 can form a connection state. Taking the first electrical part 411 and the second electrical part 412 used for power supply between the electrical component 400 and the projection module 200 as an example, the first electrical part 411 and the second electrical part 412 can form a connection state, and when the electrical component 400 needs to supply power to the projection module 200, the first electrical part 411 and the second electrical part 412 can form a conduction state for power supply. In the example, the first electrical part 411 and the second electrical part 412 can be metal conductors, and when the projection module 200 is in the first position or the second position, the first electrical part 411 and the second electrical part 412 can be in abutment with each other, so that the first electrical part 411 and the second electrical part 412 remain in an electrically connected state.

[0114] In some examples, the accommodation groove 140 also has a third position, which can be located on one side of the first position away from the second position, or on one side of the second position away from the first position. When the projection module 200 moves to the third position, the first electrical part 411 can be electrically disconnected from the second electrical part 412.

[0115] Please refer to FIGS. 7-11. In some examples, the first electrical part 411 includes a plurality of conductive rails 411a extending along the circumference of the first housing 100 and arranged at intervals, and the second electrical part 412 includes a plurality of conductive blocks 412a arranged at intervals, and the projection module 200 is configured to mechanically contact a single conductive rail 411a and a single conductive block 412a during movement.

[0116] The conductive rail 411a can be a long strip-shaped conductive structure arranged along the circumference of the first housing 100, such as a metal strip, a copper plating layer, etc. The conductive rail 411a can be used for electrical connection with the second electrical part 412 for communication signal transmission and / or circuit conduction. In the example, the number of conductive rails 411a is multiple, and the extension direction of the multiple conductive rails 411a can be consistent with the movement trajectory of the projection module 200, so that the projection module 200 can be adapted to the conductive rails 411a during movement. In some examples, the conductive rail 411a can be a plurality of protrusions 411b arranged at intervals in a predetermined direction.

[0117] The second electrical part 412 includes a plurality of spaced conductive blocks 412a, which can be metal spheres or metal protrusions arranged on the outer surface of the projection module 200. When any one of the conductive blocks 412a is connected to any one of the conductive rails 411a, the electrical connection between the projection module 200 and the electrical component 400 can be achieved. In this example, a plurality of conductive blocks 412a are arranged to cooperate with the conductive rails 411a. When the projection module 200 moves relative to the first shell 100, the conductive blocks 412a can mechanically contact the conductive rails 411a for signal transmission and / or circuit conduction between the projection module 200 and the electrical component 400. A plurality of groups of conductive blocks 412a can correspond to a plurality of conductive rails 411a, respectively, to improve the fault tolerance of the electrical connection between the first electrical part 411 and the second electrical part 412.

[0118] The plurality of conductive blocks 412a in this example can be one-to-one adapted to the plurality of electrical rails, or one conductive block 412a can correspond to at least two adjacent conductive rails 411a, or one conductive rail 411a can correspond to two adjacent conductive blocks 412a.

[0119] Referring to FIGS. 3, 8-11, the plurality of conductive rails 411a are spaced along the axial direction of the first shell 100. The axial direction of the first shell 100 can be the first direction 2a as shown in FIG. 3. In this example, the plurality of conductive rails 411a are spaced along the axial direction of the first shell 100. When the projection module 200 moves along the circumferential direction of the first shell 100, the projection module 200 can move along the length direction of the conductive rails 411a, so that the conductive blocks 412a connected to the projection module 200 can maintain mechanical contact with the conductive rails 411a during the movement of the projection module 200. In this example, a single conductive rail 411a can be a metal strip or a metal plating layer continuously arranged along the circumferential direction of the first shell 100. Alternatively, a single conductive rail 411a can be a metal track formed by a plurality of metal protrusions 411b continuously or spaced along the circumferential direction of the first shell 100.

[0120] Referring to FIG. 7(a), the plurality of conductive blocks 412a are spaced along the axial direction of the projection module 200. In this example, the plurality of conductive blocks 412a can correspond to the positions of the plurality of conductive rails 411a, so that during the movement of the projection module 200 along the circumferential direction of the first shell 100, the plurality of conductive blocks 412a spaced along the axial direction of the projection module 200 can mechanically contact at least one of the conductive rails 411a, thereby maintaining the electrical connection between the first electrical part 411 and the second electrical part 412 when the projection module 200 moves between the first position and the second position.

[0121] Please refer to FIG. 7(b) and FIG. 7(c) together, the bottom wall 240 is arranged on one side of the projection module 200 along the axial direction, the conductive block 412a is arranged on the bottom wall 240, and the conductive rail 411a is arranged on the surface of the first shell 100 opposite to the bottom wall 240. The bottom wall 240 can be the side wall 130 opposite to the light exit surface 221 of the projection module 200. The conductive block 412a is arranged on the bottom wall 240, and the conductive block 412a can be a metal block or a metal ball protruding from the surface of the bottom wall 240. The accommodating groove 140 has a surface arranged opposite to the bottom wall 240, the conductive rail 411a is located in the accommodating groove 140, and the conductive rail 411a is connected to the surface of the first shell 100 opposite to the bottom wall 240, so that the conductive rail 411a on the first shell 100 can be matched with the conductive block 412a on the bottom wall 240.

[0122] In some examples, different from the previous example, a plurality of conductive rails 411a are arranged on the surface of the first shell 100 along the circumferential direction, and the plurality of conductive rails 411a are arranged at intervals along the axial direction of the first shell 100; a plurality of conductive blocks 412a are arranged on the surface of the projection module 200 along the circumferential direction, and the plurality of conductive blocks 412a are arranged at intervals along the axial direction of the projection module 200, the conductive rail 411a on the surface of the first shell 100 along the circumferential direction is configured to be in mechanical contact with a single conductive block 412a on the surface of the projection module 200 along the circumferential direction during movement of the projection module 200; and the bottom wall 240 is arranged on one side of the projection module 200 along the axial direction, the conductive block 412a is arranged on the bottom wall 240, and the conductive rail 411a is arranged on the surface of the first shell 100 opposite to the bottom wall 240, the conductive block 412a on the bottom wall 240 is configured to be in mechanical contact with the conductive rail 411a on the surface of the first shell 100 opposite to the bottom wall 240 during movement of the projection module 200.

[0123] In the example, the conductive blocks 412a are arranged on the outer circumferential surface of the projection module 200 and the end surface of the projection module 200 in the axial direction; the conductive rails 411a are arranged on the inner circumferential surface of the first shell 100 and the end surface of the first shell 100 opposite to the bottom wall 240, the conductive blocks 412a on the outer circumferential surface of the projection module 200 can be matched with the conductive rails 411a on the inner circumferential surface of the first shell 100, the conductive blocks 412a on the bottom wall 240 of the projection module 200 can be matched with the conductive rails 411a on the end surface of the first shell 100 opposite to the bottom wall 240, when the projection module 200 moves relative to the first shell 100, the projection module 200 moves between the first position and the second position, the projection module 200 and the first shell 100 can be electrically connected through the conductive blocks 412a and the conductive rails 411a at all times, so that when the projection module 200 is adjusted in position, the projection module 200 can maintain good communication connection and / or power supply state with the electrical component 400, and the fault tolerance of the connection between the first electrical part 411 and the second electrical part 412 is improved.

[0124] In some examples, the first shell 100 is provided with a light-transmitting area 131 communicating with the receiving groove 140, the projection module 200 is configured to allow movement relative to the light-transmitting area 131 and move the projection module 200 into the light-transmitting area 131 to project light out of the light-transmitting area 131, the conductive blocks 412a and the conductive rails 411a are arranged in a staggered manner outside the orthographic projection area of the light-transmitting area 131, the projection module 200 has a light-out surface 221, when the light-out surface 221 is outside the light-transmitting area 131 or partially overlaps the light-transmitting area 131, the conductive blocks 412a and the conductive rails 411a are not electrically connected.

[0125] In some embodiments, a sensor, such as a Hall sensor, an infrared sensor, a brightness sensor, or a distance sensor, etc., can be arranged between the light-transmitting area 131 and the shielding area 132, and the sensor is configured to monitor the movement position of the second shell 230 relative to the light-transmitting area 131 and the shielding area 132, when it is detected that the second shell 230 moves to the projection area where the shielding area 132 is located, or at least partially overlaps the shielding area 132, or the light-out surface 221 at least partially overlaps the shielding area 132, a signal is sent to the main control board, and the main control board controls the electrical disconnection of the conductive blocks 412a and the conductive rails 411a, so that the electrical connection can be disconnected when the projection module is at least partially shielded by the shielding area 132, and since the shielding greatly affects the projection light-out effect, the electrical connection of the display assembly 210 can be disconnected, thereby facilitating the reduction of power consumption and the improvement of the use time of the projection device.

[0126] Please refer to FIG. 6, FIG. 8, FIG. 9 and FIG. 12, the conductive block 412a and the conductive rail 411a are misaligned outside the orthographic projection area of the light transmission area 131, which means that the conductive block 412a, the conductive rail 411a and the light transmission area 131 are projected in the above-mentioned reference plane along the light output direction of the projection module 200, and the conductive block 412a and the conductive rail 411a are located outside the projection of the light transmission area 131. In the above-mentioned projection, when the light output surface 221 of the projection module 200 is located outside the light transmission area 131, or the light output surface 221 of the projection module 200 partially overlaps the light transmission area 131, the wall surface where the light transmission area 131 is located can block the light output surface 221, at this time the conductive block 412a and the conductive rail 411a are not electrically connected, so that the electrical connection between the projection module 200 and the electrical component 400 is disconnected. In the example, the accommodation groove 140 can have the third position described in the above-mentioned example, when the projection module 200 moves to the third position, the wall surface where the light transmission area 131 is located blocks the projection module 200, the conductive block 412a can move to the outside of the conductive rail 411a, at this time the projection module 200 can be in a disconnected state with the electrical component 400, and the first electrical part 411 and the second electrical part 412 can be disconnected with each other, so that the projection module 200 can automatically switch to a power-off or sleep state.

[0127] By setting the projection module 200 which can move relative to the light transmission area 131, the user can adjust the position of the projection module 200 as needed, and then flexibly adjust the position of the projection outline 600 generated by the projection module 200, thereby improving the flexibility of the projection result of the projection device, and at the same time, the projection module 200 can be shielded by the shielding area 132 and not transparent, thereby realizing hidden storage of the projection module, reducing the probability of damage to the projection module, and being conducive to the use of the projection device 10 as a smart wearable device without easily producing a strange feeling in appearance, and being conducive to improving the use of the device by the user in more scenarios. By maintaining mechanical contact between the first electrical part 411 and the second electrical part 412 in the light transmission area 131 during movement to realize electrical connection, the electrical connection stability of the electrical projection module during dynamic movement is effectively improved, the adaptability and convenience of the projection module are improved, and it is not necessary to use a flexible wire to cause a larger internal space, and the conductive rail 411a can sufficiently reduce the volume of the first shell 100.

[0128] In the related art, projection display technology can use optical systems and projection spaces to magnify and display image information. The projection system is ultimately completed by an optical imaging system to display images. Projectors are widely used in homes, education, entertainment, and offices. The projection lens greatly influences the application scenarios and imaging quality of the projection system. The size of the projection lens also affects the overall volume of the terminal product. The number of lenses in the ultra-short focus lens in the optical system of the projector is generally about 20, which is relatively large and is not conducive to compatibility with watches, bracelets, and other devices, and cannot achieve portable wear.

[0129] On the basis of the above, in combination with FIGS. 18-30, the present application provides an optical system for a projection module 300 and a wearable device, which can solve the problem of the large volume of the optical system of the projection module 300 and the inability to achieve lightweight and portability.

[0130] Please refer to FIGS. 18-21. According to an embodiment of the present application, the optical system for the projection module 300 includes a refractive lens assembly 320 and a reflecting mirror 330 arranged in sequence along the optical axis. The refractive lens assembly 320 includes a first lens 321, a second lens 322, a third lens 323, a fourth lens 324, and a fifth lens 325 arranged in sequence, and the refractive powers of the first lens 321, the second lens 322, the third lens 323, the fourth lens 324, and the fifth lens 325 are positive, positive, negative, positive, and positive in sequence. The fifth lens 325 is located on the light-emitting side of the projection source 310, and the first lens 321 is away from the projection source 310. The reflecting mirror 330 is located on the magnification side of the refractive lens assembly 320 and is arranged close to the first lens 321. The effective focal length range of the refractive lens assembly 320 is 1.6-2.2 mm, and the distance TTL from the projection source 310 to the reflecting mirror 330 is 8-10 mm.

[0131] It can be understood that in this embodiment, the projection source 310 is responsible for emitting light. For example, the projection source 310 can be a high-brightness LED or a laser light source. The light emitted by the projection source 310 is focused and corrected by the subsequent refractive lens assembly 320, and finally projected onto the target position or target screen through the reflecting mirror 330.

[0132] The refractive lens assembly 320 is composed of five lenses, which are arranged in sequence from right to left in the figure as the first lens 321, the second lens 322, the third lens 323, the fourth lens 324, and the fifth lens 325. The reflecting mirror 330 is located on the magnification side of the refractive lens assembly 320 and is arranged close to the first lens 321. The reflecting mirror 330 reflects the light focused by the lens assembly to the target position or target screen, forming the final projection image.

[0133] In this embodiment, the refractive power of the first lens 321, the second lens 322, the fourth lens 324 and the fifth lens 325 are all positive, that is, they are all convex lenses, which have the ability to converge light rays. The refractive power of the third lens 323 is negative, that is, it is a concave lens, which has the effect of diverging light rays. This combination of positive and negative lenses can effectively correct the distortion and chromatic aberration of light rays during propagation, and improve the clarity and color accuracy of the projected image.

[0134] At the same time, the effective focal length range of the refractive lens assembly 320 is set to be between 1.6-2.2mm, and the final total length of the lens is only 8-10mm, which not only ensures that the projection module 300 has sufficient magnification and projection distance, but also makes the entire module compact and easy to carry and install.

[0135] In this embodiment, the distance TTL (i.e. the total length of the lens) from the projection source 310 to the mirror 330 is 8-10mm, for example, in a specific embodiment, the distance TTL from the projection source 310 to the mirror 330 is 9.1mm, and the structure of the optical system is very compact, occupying a small space.

[0136] It can be understood that the optical system for the projection module 300 in this embodiment, the light emitted from the projection source 310 first passes through the refractive lens assembly 320, forms a focused light beam after five refractions, and then the light is reflected by the mirror 330, and finally projected onto the target screen to form an image. Through the cooperation of the refractive lens assembly 320 and the mirror 330, only five lenses are needed to realize the refraction and focusing process of light from the projection source 310 to the projection surface, greatly reducing the number of lenses. At the same time, the effective focal length range of the refractive lens assembly 320 is 1.6-2.2mm, which is a super short focal length lens. Smaller focal length makes the light focus or diverge faster inside the lens, thereby reducing the size of the lens, and the total length of the lens is only 8-10mm, which is conducive to the miniaturization and lightweight of the lens module.

[0137] According to one embodiment of the present application, as shown in FIGS. 18-21, the focal length range of the first lens 321, the second lens 322, the third lens 323 and the fifth lens 325 is between 2.5-3.5mm, and the focal length range of the fourth lens 324 is between 30-260mm.

[0138] In a specific embodiment, the focal length of the first lens 321 is 3.12mm, the focal length of the second lens 322 is 2.97mm, the focal length of the third lens 323 is 9.24mm, the focal length of the fourth lens 324 is 247mm, and the focal length of the fifth lens 325 is 2.63mm. When the light of the projection source 310 passes through these lenses, they will refract according to the designed refractive power and focal length, thereby changing the direction of the light and focusing, and then projecting and imaging after being reflected by the mirror 330.

[0139] According to an embodiment of the present application, the ratio of the distance T2 from the projection source 310 to the first lens 321 to the distance T1 from the first lens 321 to the mirror 330 is T2 / T1 = 1-1.5.

[0140] It can be understood that, in the embodiment, the ratio of T2 to T1 is designed to be 1-1.5, which reasonably arranges the positions of the projection source 310, the refractive lens system, and the mirror 330. The ratio range ensures that the light of the projection source 310 can be effectively transmitted and focused through the refractive lens system, and allows the mirror 330 to be located at a suitable position to reflect the light to the predetermined projection surface, while making the arrangement of the projection source 310, the refractive lens system, and the mirror 330 relatively compact, achieving a compact optical system layout, which helps to reduce the occupied space.

[0141] For example, in an optional embodiment, the distance T2 from the projection source 310 to the first lens 321 is 4.9 mm, and the distance T1 from the first lens 321 to the mirror 330 is 4.1 mm, so that T2 / T1 = 1.18, which helps to optimize the imaging quality while maintaining the compactness of the optical system.

[0142] According to an embodiment of the present application, as shown in FIGS. 18 and 19, the refractive system further includes an aperture 326, which is arranged between the first lens 321 and the second lens 322. It can be understood that, in the embodiment, the aperture 326 is on the same optical axis as the other lenses and the mirror 330, and can be used to limit the light quantity of the optical system.

[0143] Specifically, the aperture 326 can be arranged at the middle part of the first lens 321 and the second lens 322. In an optional embodiment, the air gap between the aperture 326 and the first lens 321 is 0.1 mm.

[0144] According to an embodiment of the present application, the Abbe number of the fourth lens 324 is 50-60, and the Abbe numbers of the first lens 321, the second lens 322, the third lens 323, and the fifth lens 325 are all 20-25; and / or, the refractive index of the fourth lens 324 is less than that of the first lens 321, the second lens 322, the third lens 323, and the fifth lens 325, and the refractive index of the fourth lens 324 is between 1.51-1.60, and the refractive indexes of the first lens 321, the second lens 322, the third lens 323, and the fifth lens 325 are between 1.61-1.8.

[0145] It can be understood that, in the embodiment, the Abbe number of the fourth lens 324 is designed to be greater than the Abbe number of the other lenses, which is to optimize the dispersion performance of the optical system. The higher Abbe number makes the fourth lens 324 have stronger dispersion suppression capability, that is, the refractive index at different wavelengths changes less, which is beneficial to reduce the image blur and color distortion caused by dispersion. At the same time, the Abbe numbers of the first lens 321, the second lens 322, the third lens 323 and the fifth lens 325 are relatively low, but they also play their respective roles in the whole optical system. They cooperate with the fourth lens 324 to realize the optimization of the whole optical system through reasonable layout and combination, and significantly improve the performance of the optical system without increasing the complexity and cost of the system.

[0146] For example, in a specific embodiment, the Abbe number of the fourth lens 324 is 56, and the Abbe numbers of the first lens 321, the second lens 322, the third lens 323 and the fifth lens 325 are all 21.5.

[0147] In an alternative embodiment, the refractive index of the fourth lens 324 is designed to be less than the refractive index of the first lens 321, the second lens 322, the third lens 323 and the fifth lens 325. The lower refractive index means that the fourth lens 324 has relatively weak focusing ability for light, but it helps to reduce dispersion and improve imaging quality. In addition, the use of a lower refractive index material for the fourth lens 324 can also reduce cost and weight, and simplify the manufacturing process. Exemplarily, the material of the fourth lens 324 is K26R, and the material of the first lens 321, the second lens 322, the third lens 323 and the fifth lens 325 is EP7000.

[0148] In a specific embodiment, the refractive index of the fourth lens 324 is 1.565, and the refractive index of the first lens 321, the second lens 322, the third lens 323 and the fifth lens 325 is 1.651. The refractive index is used to represent the degree of refraction of the lens to light. The greater the refractive index, the greater the degree of refraction, so the first lens 321, the second lens 322, the third lens 323 and the fifth lens 325 have greater light splitting effect on the image beam during imaging. The Abbe number is used to represent the dispersion degree of the lens medium to light. The lower the Abbe number, the more serious the dispersion, and the greater the refractive index.

[0149] According to an embodiment of the present application, as shown in FIGS. 18 and 19, the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 are all aspherical lenses, and the absolute value of the curvature radius of the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 is between 2-20 mm.

[0150] It can be understood that, in the embodiment, the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 all use aspherical lenses in order to optimize the imaging quality. Compared with traditional spherical lenses, aspherical lenses can more accurately control the propagation and focusing of light, thereby reducing optical problems such as aberration, distortion, and improving the definition and contrast of the image, which is crucial for the optical system of the projection module 300, because it directly affects the quality of the projected image.

[0151] Secondly, the absolute value of the radius of curvature of the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 are all between 2-20mm. A smaller radius of curvature can achieve a more compact optical system, reducing the overall size and weight. However, a too small radius of curvature can also lead to increased processing difficulty and cost. On the other hand, a larger radius of curvature, although easy to process, can make the optical system too large and cumbersome. Therefore, the radius of curvature range of 2-20mm is a relatively balanced choice, taking into account both optical performance and processing cost and system size.

[0152] In a specific embodiment, the radius of curvature of the fourth lens 324 is greater than that of the other lenses, so that the focal length of the fourth lens 324 is longer, which can reduce the aberration and distortion of the lens. A larger radius of curvature can also improve the transmittance and optical performance of the lens. Transmittance is the ability of a lens to allow light to pass through, while optical performance includes parameters such as resolution, contrast, etc. A larger radius of curvature can reduce reflection and scattering on the surface of the lens, improving the transmittance of light and thus improving the optical performance of the lens.

[0153] In the embodiment, the radius of curvature of each lens can be matched with its corresponding aperture and focal length and other parameters to achieve the best optical energy absorption and imaging quality. For example, the aperture of the fifth lens 325 and the fourth lens 324 is larger than that of the other lenses, which can collect more light, thereby improving the brightness and clarity of the image. The apertures of the other lenses are smaller, which is beneficial to reduce the occupied volume of the optical system and reduce the weight.

[0154] According to one embodiment of the present application, referring to FIGS. 18 and 19, the edge thickness of the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 is between 0.2-0.9mm; and / or, the effective radius of the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 is between 0.6-2.1mm.

[0155] It can be understood that, in an optional embodiment, the edge thickness of the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 are all between 0.2-0.9mm, and the thinner edge thickness can reduce the total weight and volume of the lens, which is very important for realizing a compact optical system, and the selection of the range of 0.2-0.9mm can ensure sufficient mechanical strength and stability while maintaining the compactness of the lens.

[0156] For example, in a specific embodiment, the edge thickness of the fifth lens 325 is 0.74mm, the edge thickness of the fourth lens 324 is 0.3mm, and the edge thickness of the third lens 323 is 0.90mm.

[0157] In an optional specific embodiment, the air gap between the fifth lens 325 and the projection source 310 is 0.32mm, the center thickness of the fifth lens 325 is 1.10mm, the air gap between the fifth lens 325 and the fourth lens 324 is 0.15mm, the center thickness of the fourth lens 324 is 0.9mm, the air gap between the fourth lens 324 and the third lens 323 is 0.14mm, the center thickness of the third lens 323 is 0.71mm, the air gap between the third lens 323 and the second lens 322 is 0.1mm, the center thickness of the second lens 322 is 0.5mm, the air gap between the second lens 322 and the first lens 321 is 0.2mm, and the center thickness of the first lens 321 is 0.48mm, so that the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 are arranged compactly, and the occupied space is minimized.

[0158] In another optional embodiment, the effective radius of the first lens 321, the second lens 322, the third lens 323, the fourth lens 324 and the fifth lens 325 is between 0.6-2.1mm.

[0159] The effective radius in this embodiment is the maximum effective radius, and the effective radius is a key parameter that determines the field of view angle that the lens can cover and the light collecting ability of the lens, and directly affects the field of view angle of the lens. A larger effective radius can provide a wider field of view angle, so that the lens can collect more light, thereby increasing the brightness and clarity of the image, and an appropriate effective radius can ensure that the lens has lower aberration and distortion during imaging, thereby improving the imaging quality.

[0160] In this embodiment, the effective radius of the lens is designed to be between 0.6-2.1mm, which can control the size, weight and cost of the lens while ensuring that the lens has sufficient field of view angle and good optical performance, and reduce the manufacturing difficulty.

[0161] In one embodiment, the effective radius of the lens near the projection source 310 is larger, for example, the effective radius of the fifth lens 325 is larger than that of the other lenses.

[0162] According to one embodiment of the present application, referring to FIG. 18 and FIG. 19, the first lens 321, the second lens 322 and the fifth lens 325 are double convex lenses, the third lens 323 is a double concave lens, and the fourth lens 324 is a plano-convex lens.

[0163] In this embodiment, the first lens 321, the second lens 322 and the fifth lens 325 are double convex lenses, both sides of the double convex lens are convex, and have positive optical power, which can converge light rays, so that the light rays are bent towards the axis of the lens after passing through the lens. In the optical system, the first lens 321, the second lens 322 and the fifth lens 325 are used to provide the main focusing power to focus the light rays. The third lens 323 is a double concave lens, both sides of the double concave lens are concave, and have negative optical power, which makes the light rays diverge away from the axis of the lens after passing through the third lens 323, and is used to correct the optical power of the system. The fourth lens 324 is a plano-convex lens, which can be used to fine-tune the performance of the system without affecting the main focusing power.

[0164] By combining the above different types of lenses, a complex optical system can be realized to meet specific imaging needs. For example, the combination of double convex lenses and double concave lenses can adjust the focal length and optical power of the system, while the plano-convex lens can fine-tune the performance of the system to achieve the best imaging effect.

[0165] According to one embodiment of the present application, the projection ratio of the optical system for the projection module 300 is 0.36-0.38.

[0166] It can be understood that in this embodiment, the projection ratio of the optical system for the projection module 300 is designed to be between 0.36-0.38, wherein the projection ratio refers to the ratio of the distance between the projection lens and the projection screen to the width of the projection picture. The smaller the projection ratio, the closer the projection lens or the projection device is to the projection screen, or the larger the size of the projected picture. The projection ratio of the present optical system is between 0.36-0.38, which enables the optical system to project a larger picture at a very short distance, facilitating the application of the optical system in wearable devices such as wristbands or watches to project the picture onto the back of the user's hand, palm or arm, facilitating the user's use and improving the user's experience.

[0167] Specifically, in one embodiment, the present application also provides specific parameters of the reflecting mirror 330, the projection source 310 and the lenses, as shown in Table 1 below:

[0168] According to the wearable device of the second aspect of the present application, as shown in FIGS. 22-28, the wearable device comprises a display body 100, a band 250 connected to the display body 100, a projection source 310, and the optical system of the projection module of any of the above embodiments, which are arranged on the display body 100 or the band 250.

[0169] For example, the projection module 300 comprises the projection source 310 and the optical system described above, and the projection module 300 can be installed on the display body 100 or the band 250 to project the picture to the palm and back of the hand, etc.

[0170] In an optional embodiment, the wearable device comprises a display body 100 and a band 250 connected to the display body 100; a projection module 300 installed on the display body 100 or the band 250, the projection module 300 comprising a projection source 310, a refractive lens assembly 320, and a reflecting mirror 330 arranged in sequence along an optical axis, the refractive lens assembly 320 comprising a first lens 321, a second lens 322, a third lens 323, a fourth lens 324, and a fifth lens 325 arranged in sequence along the optical axis and having refractive powers of positive, positive, negative, positive, and positive in sequence; the reflecting mirror 330 is located on the magnification side of the refractive lens assembly 320; and the field of view angle of the projection module is 27°-74°. By controlling the field of view angle of the projection module 300, the light emitted from the refractive lens assembly 320 can be reflected by the reflecting surface and projected to the projection surface (e.g., the palm or back of the hand or the arm of the user), so as to realize projection in a smaller projection area and improve the application scenarios and projection effect of the wearable device.

[0171] In an optional embodiment, the distance from the projection surface to the reflecting surface is 10-30 mm, and the distance of 18 mm is exemplary for the best projection effect.

[0172] Specifically, the modulation function and distortion map of the projection module 300 under different field of view angles can be referred to FIGS. 29 and 30. As shown in the figures, the value of the image in the interval of 0 mm-50 mm can be kept above 0.5 under different field of view angles. Generally, the closer the value is to 1, the higher the image quality is. However, due to various factors, there is no case of the modulation value being 1. Generally, when the modulation value can be kept above 0.5, it means that the image has high imaging quality and the picture has high definition. Therefore, it can be known that the ultra-short focus projection lens of the present embodiment has higher imaging quality. The left graph of FIG. 30 is a graph of astigmatism, and the right graph is a distortion map. As shown in FIG. 30, the astigmatism and distortion under different field of view angles are within the expected range.

[0173] According to one embodiment of the present application, the reflecting surface of the mirror 330 is an aspheric surface or a free-form surface. The light rays emitted from the refractive lens assembly 320 are incident on the reflecting surface of the concave mirror, and are reflected by the reflecting surface of the concave mirror to the projection surface (e.g., the palm, the heart of the hand, or the arm of the user), thereby achieving a convenient projection experience anytime and anywhere. This projection mode not only facilitates the user to watch, but also avoids the problem of needing to find a suitable projection screen in the traditional projection mode.

[0174] In the embodiment, the reflecting surface of the mirror 330 is an aspheric surface or a free-form surface, which can reduce aberration and improve the display effect of the projection picture. Compared with the traditional spherical mirror, the aspheric surface or the free-form surface of the mirror 330 can more effectively correct and compensate the aberration generated in the propagation process of the light rays, so that the projection image is more clear and accurate.

[0175] In an optional embodiment, a metal reflecting layer (not shown in the figure) is arranged on the reflecting surface of the mirror 330. The metal reflecting layer can guarantee the reflecting efficiency and also has good heat dissipation effect. Especially, silver, aluminum, and the like have very high reflectivity in the visible light and near-infrared wave bands. When the light rays are incident on the metal reflecting layer, most of the light rays will be reflected, rather than being absorbed or scattered. Moreover, the metal reflecting layer can effectively conduct the heat absorbed by the mirror to other parts, thereby helping the mirror to maintain a relatively low temperature, which is conducive to preventing the mirror from being deformed or damaged due to overheating.

[0176] Specifically, the metal reflecting layer can be formed by coating silver, aluminum, or aluminum-magnesium alloy, and the like on the reflecting surface. The embodiment is not limited in particular.

[0177] According to one embodiment of the present application, the optical system (or the projection device) of the present application can also be applied to a watch, a watchband, a watchcase, or a ring, and the like wearable device. The embodiment of the present application takes a watchband application scenario as an example. In combination with reference to FIGS. 22-28, the projection device can further include a first housing 10 and a second housing 30. One side of the first housing 10 is connected with a first band part 251, and the other side is provided with a first connecting part 13. The first housing 10 is further provided with a receiving cavity 14 and a projection window 12 communicating with the receiving cavity 14. One side of the second housing 30 is connected with a second band part 22, and the other side is provided with a second connecting part 33. The second connecting part 33 is configured to be releasably joined to the first connecting part 13, and allows the first band part 251 and the second band part 22 to be bent on the wrist of the wearer. The optical system for the projection module is located in the receiving cavity 14, and the light rays of the optical system for the projection module are configured to be transmitted out of the projection window 15.

[0178] It can be understood that, in the embodiment, in combination with reference to FIGS. 22-28, the projection device can further include a first housing 10, a first side 11' of the first housing 10 is configured to allow connection with the first strap portion 251, a second side 12 of the first housing 10 away from the first side 11' is provided with a first connecting portion 13; a second connecting portion 33 is provided on a second side 32 of a second housing 30 away from a first side 31 of the second housing 30, the second connecting portion 33 is configured to releasably engage the first connecting portion 13, wherein the first housing 10 is further provided with a receiving cavity 14 and a projection window 15 communicating with the receiving cavity 14.

[0179] The second housing 30, the first side 31 of the second housing 30 is configured to allow connection with the second strap portion 22, it can be understood that the above and below described connection includes direct connection and indirect connection, which can include clamping, fastener fixed connection, adhesion and the like. The second connecting portion 33 is provided on the second side 32 of the second housing 30 away from the first side 31 of the second housing 30, the second connecting portion 33 is configured to releasably engage the first connecting portion 13, and allow the first strap portion 251 and the second strap portion 22 to be bent on the wearer's wrist. Wherein the first strap portion 251 and the second strap portion 22 are not integrally connected as a whole, but are two segments located on both sides of the main body 80 of the wearable device (described in the following embodiment), the first strap portion 251 can be one of the strap portions of the wearable device, for example, the left strap portion, and the second strap portion 22 can be one of the other strap portions of the wearable device, for example, the right strap portion, the wearable device can be a watch, a bracelet, etc., the first strap portion 251 and the second strap portion 22 can be bent to form a substantially annular structure to be buckled on the user's wrist or neck, etc., to ensure that the entire projection device can be engaged on various strap wearable devices; so that the projection device can be compatible with various strap wearable devices to realize projection, and allow the first strap portion 251 and the second strap portion 22 to be bent on the wearer's wrist 60. The first strap portion 251 and the second strap portion 22 are bent to form a substantially annular structure, for example, as shown in FIGS. 8-10. The first housing 10, the second housing 30, the first strap portion 251 and the second strap portion 22 can ensure that the entire projection module 300 is releasably engaged on various strap wearable devices, and the length of the strap can be adapted to be compatible with different sizes of the wrist 60.

[0180] The projection module 300 is located in the accommodating cavity 14. The projection module 300 can be located entirely in the accommodating cavity 14, or part (for example, the optical module part) of the projection module 300 can be exposed relative to the accommodating cavity 14. The light of the projection module 300 is configured to be transmitted through the projection window 15, which can be light-transmissive or a hole or opening structure on the first shell 10. The optical axis direction A of the projection module 300 is arranged at an angle a with the connecting direction B of the first shell 10 to the second shell 30. It can be understood that the optical axis direction A can be the light-out direction of the center of the projection module 300, and the connecting direction B of the first shell 10 to the second shell 30 can be the connecting direction of the center of the first shell 10 and the center of the second shell 30. As shown in FIG. 5, in the XYZ space coordinate system, the direction B can be the X-axis direction, and the optical axis direction A can be the Z direction. In some application scenarios, the first belt part 251 and the second belt part 22 can include an unfolded state and a bent state. In the fully unfolded state, the first belt part 251 and the second belt part 22, the first shell 10 and the second shell 30 can be coaxially arranged as shown in FIG. 22 or FIG. 23, for example, and the included angle a can be 60°, 80°, 85°, 90°, etc.

[0181] In some application scenarios, the existing projection module 300 can be integrated into the display body 100 of the wearable device. In another embodiment, considering that the integration of the projection module 300 and the related circuit into the display body 100 needs to change the electrical properties and mechanical connection of the original electrical components, the development cost is high, which causes the display body 100 to be larger in size and heavier in weight, and the endurance is also affected accordingly, and the existing wearable device cannot be compatible. By setting the angle a between the optical axis direction A and the connecting direction B of the first shell 10 to the second shell 30, it is ensured that the projection module 300 can be mounted on the belt 250 of the wearable device instead of the display body 100, and when the projection module 300 is worn on the wrist 60 of the wearer, the projection window 15 can project onto the palm 62, the back of the palm or the arm, etc. where the wrist 60 is located, without affecting the functions and use of the original wearable device. Therefore, the projection module 300 of the embodiment of the present application can be compatible with the quick combination and disassembly of various belt wearable devices, facilitating the flexible projection of different areas on the existing various wearable devices, effectively improving the application scenarios of the projection device, and enabling ordinary wearable devices to have intelligent projection functions.

[0182] In other embodiments, the projection module 300 can also be applied to other wearable devices such as rings, watch covers, bracelets, etc. The projection module 300 can be applied to the projection module related description in the above-mentioned ring embodiment, wherein the projection source 310 can be similar in principle and / or structure to the display assembly 210, and the refractive lens assembly 320 and the reflecting mirror 330 can be similar in principle and / or structure to the optical assembly 220.

[0183] In some embodiments, referring to FIGS. 22-28, the first side 11' and the second side 12 of the first housing 10 can be opposite sides of the same axis, the first side 31 and the second side 32 of the second housing 30 can be opposite sides of the same axis, the projection window 15 is located between the first side 11' and the second side 12 of the first housing 10, the first housing 10 is configured to allow rotation to the side of the wearer's wrist 60 facing the palm 62, and the light of the projection module 300 is used to image on the palm 62 of the wearer. It can be understood that the projection window 15 can be located on the side of the first housing 10, for example, in the Y direction of the XY plane in FIG. 22, that is, in the thickness direction of the first housing 10, the side of the wrist 60 facing away from the palm 62 is often used as the main display surface of the wearable device (for example, the display body of the watch), and rotating the projection window 15 to the side of the wearer's wrist 60 facing the palm 62 can facilitate the wearer to observe the projection content without interference with the main display surface, and FIG. 24 is an example of the outline 63 of the projection content.

[0184] In some embodiments, referring to FIGS. 22-28, the first housing 10 includes a top surface 101, a back surface 102, a first side surface 103, and a second side surface 104, the first side surface 103 and the second side surface 104 are respectively connected to the top surface 101 and the back surface 102, the first side surface 103 and the second side surface 104 are oppositely arranged, the top surface 101 and the back surface 102 are oppositely arranged, and the first side 11' and the second side 12 of the first housing 10 can be other sides different from the top surface 101, the back surface 102, the first side surface 103, and the second side surface 104; the top surface 101, the back surface 102, the first side surface 103, and the second side surface 104 can be one or a combination of a plane and a curved surface, the back surface 102 is configured to contact the wearer's wrist 60, and the top surface 101 faces away from the wearer's wrist 60, and the projection window 15 is located on the first side surface 103 to allow the light of the projection module 300 to image on the palm 62 of the wearer. In other embodiments, the light of the projection module 300 can also image on the back of the wearer's palm, and it can be understood that the top surface 101 and the back surface 102 can be X-Z shaped reference surfaces or corresponding parallel reference surfaces, and the first side surface 103 and the second side surface 104 can be X-Y shaped reference surfaces or corresponding parallel reference surfaces. In other embodiments, the top surface 101, the back surface 102, the first side surface 103, and the second side surface 104 can not be planes, but one or a combination of continuous curved surfaces, and at this time, the X-Z and X-Y shaped reference surfaces can be surfaces tangent to certain points of the above-mentioned curved surfaces. The XYZ space coordinate system in the figure is only a simple example for describing the positional relationship of the surfaces, and does not strictly limit the standard cuboid or rectangular structure formed by the planes of the present application. In fact, the surfaces of the first housing 10 can include a combination of continuous or discontinuous curved surfaces and planes.

[0185] In some embodiments, the top surface 101 and the back surface 102 comprise a curved surface that can be fitted to the wrist 60 of the wearer; wherein the distance between the top surface 101 and the back surface 102 is not more than 20 mm, for example 20 mm, 18 mm, 15 mm, 12 mm or 10 mm, etc., that is, the thickness (Y-axis direction example in FIG. 22) of the first shell 10 is not more than 18 mm. In some scenarios, for example, in the scenario of the user typing at the desk, if the thickness here is too thick, it will easily cause the user's wrist 60 to be affected when typing at the desk. Many projection devices in the prior art are combined with wearable devices, which often have a large volume and cannot be compatible with the normal use of the original wearable device. By designing the thickness parameter of the first shell 10, it is beneficial to reduce the discomfort caused by the projection module 300 in the overall over-thickness of the wearable device, and to ensure that the user maintains the normal use of the original wearable device in various scenarios. And the projection window 15 is located on the first side surface 103, so even if the top surface 101 is fitted to the desktop during use, it will not cause wear to the projection module 300.

[0186] In some embodiments, the projection module 300 can further comprise a third shell 50, one side of the third shell 50 is configured to be detachably connected with the first side 11' of the first shell 10, and the other side of the third shell 50 is configured to allow connection with the first strap part 251. It can be understood that the third shell 50 and the first strap part 251 are connected first, and then the third shell 50 and the first shell 10 are connected. The above connection can be, for example, clamping or bonding, etc. It is beneficial to reduce the structural complexity of the first shell 10 and reduce the production cost of the first shell 10. At the same time, the electrical devices of the first shell 10 can be designed and then assembled with the third shell 50, which can improve the assembly efficiency of the overall component while minimizing the mold opening or design cost. In some embodiments, the third shell 50 and the first shell 10 are the same shape, which can ensure the consistency of the appearance, further reduce the mold opening cost, and maintain the overall aesthetics. Wherein the length of the first shell 10 can be greater than the length of the second shell 30 and the third shell 50, so as to effectively integrate the related components of the projection device 40 into the first shell 10, facilitating the division of design and manufacture.

[0187] In some embodiments, the first connecting part 13 and the second connecting part 33 comprise magnetic parts that attract each other; for example, the first connecting part 13 and the second connecting part 33 are different magnets, or one is a magnet and the other is a metal that can be attracted.

[0188] In some embodiments, the first connecting part 13 and the second connecting part 33 comprise protrusions and grooves which are engaged with each other. For example, the first connecting part 13 comprises protrusions and the second connecting part 33 comprises grooves, and the two are engaged with each other. Of course, the order of the two can also be interchanged to achieve engagement. In some embodiments, the length of the first strap part 251 can extend into the groove of the second connecting part 33, and be clamped by the protrusions of the first connecting part 13.

[0189] In some embodiments, referring to Figs. 22-28, the projection module 300 can further comprise a locking member 35 movably connected to the first housing 10 and / or the second housing 30. For example, the locking member 35 is movably connected to the first housing 10 and protrudes relative to the top surface 101, or can be located at the first side surface 103 or the second side surface 104, or the locking member 35 is movably connected to the second housing 30 and protrudes relative to the second housing 30. The locking member 35 is configured to allow the first connecting part 13 and the second connecting part 33 to be fixed in a first position, and to allow the first connecting part 13 and the second connecting part 33 to be separated in a second position. A user can quickly operate the locking member 35 to achieve quick fixing or separation of the first connecting part 13 and the second connecting part 33 as needed.

[0190] In some embodiments, referring to Figs. 25-27, one side of the first housing 10, the second housing 30 and / or the third housing 50 towards the wearer's wrist 60 comprises a curved surface; the first housing 10 and the third housing 50 are symmetrically designed relative to the projection window 15, which is advantageous to ensure that the overall projection module 300 is more aesthetically pleasing and the weight distribution is more uniform. In addition, the surfaces of the first housing 10, the second housing 30 and the third housing 50 are smoothly transitioned in sequence, i.e., there is no obvious step, so that the whole is more aesthetically pleasing.

[0191] In some embodiments, referring to FIG. 24, the projection device can further include a micro display 41 and an optical module 42 located at the light exit side of the micro display 41, which can adopt the optical scheme of the refractive lens assembly 320 and the mirror 330 in the related embodiments of the present application, and the specific description can be referred to the description of the related embodiments. Of course, other ultra-short focus or miniature optical schemes can also be adopted, which will not be described here. The micro display 41 can refer to the related description of the micro display 212 described above, which will not be described here. The micro display 41 can provide an image source, such as text, video, information prompt, etc. The projection window 15 is provided with an optical protection sheet 152 located at the light exit side of the optical module 42, and the projection device further includes a control circuit 70, a battery 71, a communication unit 76 and at least one vital sign sensor 74 located in the first housing 10, the control circuit 70 and the micro display 41, the battery 71, the communication unit 76 and the at least one vital sign sensor 74 are electrically connected, and the vital sign sensor 74 can include a blood glucose sensor, an electromyography sensor, a skin electricity sensor, a heart rate sensor, a pulse sensor, etc. Among them, at least one sensor 74 faces the wearer and is configured to detect the vital signs of the wearer, such as detecting the pulse, heart rate, blood oxygen, blood pressure, etc. of the wearer located at the wrist 60 of the wearer. In other embodiments, the sensor 74 can also include an inertial sensor, a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, etc. The communication unit 76 can be, for example, Bluetooth, 2.4g or wifi, etc. The battery 71 can adopt a lithium battery or a replaceable battery, etc. The above design enables the projection module 300 to realize the functions of communication and intelligent monitoring of vital signs, which is beneficial to the combination with ordinary mechanical watches, etc. so that non-intelligent watches also have the functions of intelligent watches. It can be understood that the projection module 300 can also include an interface module 73 and an interaction module 75, the interface module 73 can be, for example, a type-c, usb, metal contact, etc. Electrical interface or data transmission interface, the interaction module 75 can be, for example, a key, voltage or capacitive touch sensing interaction, which realizes the instruction operation of the projection module 300.

[0192] The wearable device can include a display body 100; the display body 100 can be, for example, a watch dial, a display screen of a bracelet, and the like; a first band part 251 is connected to one end of the display body 100, for example, can be connected by a rotating shaft 253; a second band part 22 is connected to the other end of the display body 100, for example, can be connected by a rotating shaft 253; it can be understood that the first band part 251 and the second band part 22 are located on both sides of the display body 100, and the projection module 300 is arranged between the first band part 251 and the second band part 22, thereby realizing the connection of the first band part 251 and the second band part 22 into a ring-shaped whole. The structure, function and working principle of the projection module 300 can be referred to the description of the above-mentioned embodiments, which will not be described here.

[0193] In some embodiments, the present application also provides a projection method, which is applied to the projection device described in the above-mentioned embodiments, and the method comprises:

[0194] S11: obtaining first attitude information of a wrist part where the projection device is located.

[0195] The first attitude information can be, for example, attitude parameters detected by a sensor of the projection device in an initial wearing state, for example, a position rotation angle or direction of the wrist part, for example, the first attitude information can be embodied as that the palm 62 of the wrist 60 of the user faces downward (towards the ground), and the eyes of the wearer cannot directly watch the palm 62.

[0196] S12: obtaining second attitude information based on changes of the first attitude information.

[0197] The projection device is controlled to project based on the second attitude information. The second attitude information is different from the first attitude information, that is, as long as the wrist part 60 moves, for example, the position rotation angle or direction of the wrist part changes, that is, the wrist is rotated or shaken, the second attitude information different from the first attitude information is obtained, for example, the position of the wrist part changes, that is, it can be embodied as that the palm 62 of the wrist 60 of the user faces upward (away from the ground), at this time, the eyes of the user can just watch the palm 62. The first attitude information or the second attitude information can be detected by an inertia measurement sensor or the like.

[0198] S13: controlling the projection device to project according to the first attitude information and the second attitude information.

[0199] It can be understood that when the first attitude information and the second attitude information reach a preset value, for example, the rotation angle, speed or direction of the wrist reaches a preset value, the projection device is controlled to project. The data source of the projection can come from a smart terminal such as a mobile phone, a computer, smart glasses, or the display body 100 of a wearable device, that is, the content of the watch, so that the elderly with poor eyesight can also see the content on their watches. In other embodiments, the data source of the projection can also come from a server end.

[0200] The present application can realize projection control by detecting the first attitude information and the second attitude information change information, greatly simplifying the user's interactive operation logic and improving the user's projection interaction efficiency and experience.

[0201] In some embodiments, before step S11, the method can further include: establishing a first connection between the projection module 300 and an electronic device, which can be, for example, a mobile phone, a computer, smart glasses, a watch, a bracelet, etc. The first connection can be wired or wireless, for example, Bluetooth, 2.4g, 5g or wifi, etc. to ensure that the projection module 300 has established a stable data transmission channel.

[0202] In some other embodiments, step S13 can further include: S131: acquiring whether the palm 62 corresponding to the wearer's wrist 60 where the projection module 300 is located is unfolded, and if so, controlling the projection module 300 to project on the palm 62. It can be understood that by simultaneously detecting the attitude change of the wrist and whether the palm is unfolded to control the projection display, the false operation caused by the attitude change can be reduced, and the projection is performed when the palm is unfolded, which is beneficial to improve the user's interactive operation and facilitate the user to actively perform the projection display when needed.

[0203] The shell of an electronic device is a kind of cover for protecting electronic devices, but with the development of the times, its role has also developed from protecting electronic devices to multiple functional purposes. However, most of the protective cases of the current electronic devices only have the function of protecting the electronic devices, so that the existing electronic device protective cases are not interesting enough and cannot improve market competitiveness. Therefore, how to improve the functionality and playability of the electronic device protective case has great significance for improving market competitiveness. On the other hand, how to charge various electronic devices located in the shell is one of the problems that need to be solved at present.

[0204] The shell 11 of the electronic device and the electronic device assembly 1 of the present application will be described below with reference to FIGS. 31 to 42; in some embodiments, the electronic device assembly can also be, for example, a watchband, a watch, a mobile phone, a computer, etc.

[0205] As shown in FIGS. 31 and 32, the shell 11 of the electronic device of the present application embodiment includes a shell body 111 and a projection assembly 112.

[0206] The shell 111 is provided with a containing space 1111, and a viewing window 1113 and a projection window 1112 communicating with the containing space 1111. The containing space 1111 is configured to be suitable for disposing the electronic device 12. The viewing window 1113 is disposed opposite to the display screen 121 of the electronic device 12. The projection assembly 112 is located in the shell 111. In the first planar projection, the projection assembly 112 and the viewing window 1113 are spaced apart, and the light of the projection assembly 112 is configured to be transmitted by the projection window 1112.

[0207] It should be noted that the shell 111 is internally provided with the containing space 1111 for placing the electronic device 12, such as a smart watch, a smart phone, a tablet computer, etc. The viewing window 1113 is disposed on the front face of the shell 111, and the viewing window 1113 is disposed opposite to the display screen 121 of the electronic device 12, so as to ensure that the user can clearly see the display content of the display screen 121. In addition, the projection assembly 112 is also located in the containing space 1111. In the first planar projection, the projection assembly 112 and the viewing window 1113 are spaced apart, and the projection assembly 112 does not interfere with the electronic device 12. The light of the projection assembly 112 is transmitted by the projection window 1112 to realize the projection function. For example, the projection window 1112 is disposed on the side face of the shell 111.

[0208] In actual application, the shell 11 of the electronic device not only has the basic function of protecting the electronic device 12, but also integrates the projection function. It can be understood that since the projection assembly 112 is integrated in the shell 111, the user does not need to carry an additional projector device, and can perform the projection operation anytime and anywhere. At the same time, due to the existence of the viewing window 1113, the user can still normally use the display screen 121 of the electronic device 12 when using the projection function. The user can enjoy a more rich and convenient interactive experience when using the electronic device 12.

[0209] In an optional embodiment, as shown in FIG. 32, the containing space 1111 is divided into a first space 11111 and a second space 11112. The first space 11111 is suitable for disposing the electronic device 12, and the second space 11112 is provided with the projection assembly 112. Exemplarily, a partition plate is disposed in the containing space 1111 to divide the containing space 1111 into the independent first space 11111 and the second space 11112.

[0210] It should be noted that the first space 11111 is specifically used to set the area of the electronic device 12 (such as smart watch, smart phone, tablet computer, etc.). The size and shape of the first space 11111 are customized according to the size and shape of the target electronic device 12 to ensure that the device can be stably placed inside and be fully protected. The second space 11112 is used to set the area of the projection assembly 112. Since the projection assembly 112 can contain a projection light source, a lens and other auxiliary devices, the second space 11112 needs to be large enough to accommodate these components and ensure that they can work normally.

[0211] In the embodiments of the present application, by separating the accommodation space 1111 and respectively setting the electronic device 12 and the projection assembly 112, the accommodation space 1111 can be reasonably divided, so that each space area can be fully utilized, and the overall space utilization is improved. In addition, the electronic device 12 and the projection assembly 112 are located in different spaces, so that their functions are more independent and do not interfere with each other. In some embodiments, the first space 11111 and the second space 11112 can be isolated from each other, and the two can be separated by a partition (not shown in the figure) and the like. The components located in the first space 11111 will not interfere with the components located in the second space 11112. In some embodiments, the isolation of the partition can also reduce the risk of fluids (water, etc.) or impurities entering the second space 11112, effectively protecting the components located in the second space 11112, such as the projection assembly 112 and the like.

[0212] In an optional embodiment, as shown in FIG. 33, the shell 111 includes a top surface 1121, a bottom surface 1120, a first side surface 1116, a second side surface 1117, a third side surface 1118 and a fourth side surface 1119. The first side surface 1116, the second side surface 1117, the third side surface 1118 and the fourth side surface 1119 are sequentially connected end to end. The first side surface 1116, the second side surface 1117, the third side surface 1118 and the fourth side surface 1119 are respectively connected to the top surface 1121 and the bottom surface 1120. The first side surface 1116 and the third side surface 1118 are oppositely arranged, and the second side surface 1117 and the fourth side surface 1119 are oppositely arranged. The top surface 1121 is oppositely arranged with the bottom surface 1120. The observation window 1113 is located on the top surface 1121, and the projection window 1112 is located on the first side surface 1116.

[0213] It should be noted that the structure of the shell 111 includes a top surface 1121, a bottom surface 1120 and four side surfaces: a first side surface 1116, a second side surface 1117, a third side surface 1118 and a fourth side surface 1119. These parts together constitute a complete accommodation space 1111 for placing and protecting the internal electronic device 12 and the projection assembly 112. In addition, the shell 111 can be made in one piece.

[0214] The observation window 1113 is located on the top surface 1121 of the shell 111 and is arranged opposite to the display screen 121 of the electronic device 12. In this way, the user can directly see the content of the display screen 121 through the observation window 1113 when using the electronic device 12, without the need to open the shell 111, thereby providing great convenience and user experience. The projection window 1112 is located on the first side surface 1116 and is arranged apart from the observation window 1113. Such a layout enables the projection light to smoothly pass through the first side surface 1116 to realize the projection function. At the same time, the position of the projection window 1112 also takes into account the user's usage habits and portability, facilitating the user to perform projection operation when needed. For example, the projection light can be projected onto the back of the user's hand or arm.

[0215] In another optional embodiment, as shown in FIG. 33, the first side surface 1116, the second side surface 1117, the third side surface 1118, and the fourth side surface 1119 all include curved surfaces, the connection between the first side surface 1116 and the second side surface 1117 is arc-shaped transition, the connection between the second side surface 1117 and the third side surface 1118 is arc-shaped transition, the connection between the third side surface 1118 and the fourth side surface 1119 is arc-shaped transition, and the connection between the fourth side surface 1119 and the first side surface 1116 is arc-shaped transition. The top surface 1121 and the bottom surface 1120 can both be flat.

[0216] It should be noted that the first side surface 1116, the second side surface 1117, the third side surface 1118, and the fourth side surface 1119 all adopt curved surface design. Compared with the traditional flat surface design, the curved surface design can make it more conformal to the outer periphery of the electronic device 12. At the same time, the arc-shaped transition between adjacent side surfaces also improves the structural strength of the shell 111, making it more durable and less likely to be damaged.

[0217] In yet another optional embodiment, as shown in FIG. 33, the first side surface 1116 and the second side surface 1117 and the first side surface 1116 and the fourth side surface 1119 both enclose the clamping part 1122 which is adapted to the top corner of the electronic device 12.

[0218] It should be noted that the first side surface 1116 and the second side surface 1117, and the first side surface 1116 and the fourth side surface 1119 both enclose the clamping part 1122 which is adapted to the top corner of the electronic device 12. In this way, the top corner of the electronic device 12 can be tightly fixed in the clamping part 1122, thereby ensuring the stability of the electronic device 12 in the shell 111.

[0219] It is particularly pointed out that a partition can also be arranged in the shell 111, so that not only the accommodation space 1111 can be divided into the first space 11111 and the second space 11112, but also the partition and the second side 1117, and the partition and the fourth side 1119 also form the clamping part 1122 adapted to the top corners of the electronic device 12. It can be understood that the four top corners of the electronic device 12 can be tightly fixed in the corresponding clamping part 1122 at this time.

[0220] In an optional embodiment, as shown in FIG. 35, the shell 111 includes a top surface 1121, a bottom surface 1120, a first side 1116, a second side 1117, a third side 1118, and a fourth side 1119. The fourth side 1119, the first side 1116, and the second side 1117 are sequentially connected. The first side 1116, the second side 1117, and the fourth side 1119 are respectively connected to the top surface 1121 and the bottom surface 1120. The third side 1118 is connected to the bottom surface 1120. The first side 1116 and the third side 1118 are oppositely arranged. The second side 1117 and the fourth side 1119 are oppositely arranged. The top surface 1121 and the bottom surface 1120 are oppositely arranged.

[0221] Among them, the top surface 1121, the bottom surface 1120, the first side 1116, the second side 1117, and the fourth side 1119 form a space suitable for arranging the projection assembly 112. The bottom surface 1120, the second side 1117, the third side 1118, and the fourth side 1119 form a space suitable for arranging the electronic device 12. Exemplarily, the projection window 1112 is located on the first side 1116, and the top surface 1121 and the bottom surface 1120 can be flat.

[0222] It should be noted that the first space 11111 formed by the bottom surface 1120, the second side 1117, the third side 1118, and the fourth side 1119 is used to place the electronic device 12, so that the semi-enclosure of the electronic device 12 can be realized. It can be understood that the semi-enclosed first space 11111 ensures the stability of the electronic device 12 in the shell, and also facilitates the use and carrying of the user.

[0223] In addition, the second space 11112 formed by the top surface 1121, the bottom surface 1120, the first side 1116, the second side 1117, and the fourth side 1119 is used to arrange the projection assembly 112. The projection window 1112 is located on the first side 1116, which facilitates the projection operation of the user.

[0224] In an optional embodiment, as shown in FIG. 32, the observation window 1113 and the projection window 1112 are arranged in a spaced manner, the observation window 1113 and the projection window 1112 are located at different sides of the shell 111, and the light emission axis direction of the display screen 121 and the light emission axis direction of the projection assembly 112 are arranged in an angle. Exemplarily, the observation window 1113 is located at the top surface 1121, and the projection window 1112 is located at the first side surface 1116.

[0225] It should be noted that the observation window 1113 corresponds to the display screen 121, and the projection window 1112 corresponds to the projection assembly 112. In addition, the display light of the display screen 121 and the projection light of the projection assembly 112 are not arranged in parallel, and there is a certain angle between them. In this way, the display light of the display screen 121 will not directly irradiate the projection window 1112, and similarly, the projection light of the projection assembly 112 will not interfere with the display effect of the display screen 121. This ensures that the user can obtain clear and undisturbed visual experience when using. Effectively ensure that the electronic device 12 and the projection assembly 112 can work stably at the same time.

[0226] In an optional embodiment, as shown in FIG. 32, the light emission axis direction of the display screen 121 and the light emission axis direction of the projection assembly 112 are perpendicular to each other.

[0227] It should be noted that the light emission axis direction of the display screen 121 and the light emission axis direction of the projection assembly 112 are arranged in an angle of 90°. It can be understood that the front display direction of the display screen 121 and the projection direction L of the projection assembly 112 are perpendicular, forming two independent visual channels. In this way, it is ensured that the display content of the display screen 121 will not be disturbed by the projection light, and at the same time, the projection content will not affect the observation of the display screen 121 by the user.

[0228] In an optional embodiment, as shown in FIG. 32, the shell 111 is provided with an avoiding hole 1115 communicating with the accommodating space 1111, and the avoiding hole 1115 is arranged corresponding to the key 123 of the electronic device 12.

[0229] Among them, the key 123 of the electronic device 12 includes a volume key and a power key, and correspondingly, the shell 111 is provided with an avoiding hole 1115 corresponding to the volume key and an avoiding hole 1115 corresponding to the power key, so that the user can normally operate the electronic device 12 without taking out the electronic device 12.

[0230] In some embodiments, as shown in FIGS. 32, 36 and 40, the shell 111 is provided with a through hole 1114 communicating with the accommodating space 1111, and the through hole 1114 is arranged corresponding to the connecting piece of the electronic device 12; wherein the two through holes 1114 are arranged opposite to each other.

[0231] Exemplarily, in the case that the electronic device 12 is a smart watch, the smart watch comprises two watch bands 122, each of which can be arranged in a corresponding through hole 1114. In addition, a connecting shaft for connecting the smart watch and the watch band 122 can be exposed to the through hole 1114, thereby facilitating the installation of the watch band 122.

[0232] Specifically, the through hole 1114 and the avoiding hole 1115 are arranged at different sides of the shell 111. Exemplarily, the avoiding hole 1115 is located at the first side 1116, and the two through holes 1114 are respectively located at the second side 1117 and the fourth side 1119.

[0233] In some embodiments, the shell 111 is further provided with a through hole in communication with the accommodation space 1111, for example, a through hole corresponding to a microphone of the electronic device 12 and a through hole corresponding to a loudspeaker of the electronic device 12.

[0234] In an optional embodiment, as shown in FIG. 32, the observation window 1113 comprises a first opening, the accommodation space 1111 is in communication with the outside through the first opening, and the display screen 121 of the electronic device 12 is exposed to the first opening. The first opening is arranged on the top surface 1121, for example, the display screen 121 of the electronic device 12 can be arranged flush with the top surface 1121.

[0235] It should be noted that the first opening is matched with the display screen 121 of the electronic device 12, and the first opening can be square or circular, etc., and the specific shape can be selected according to the shape of the display screen 121 of the electronic device 12, which is not limited here.

[0236] In addition, as shown in FIG. 34, the shell 111 is further provided with a second opening 1123 in communication with the accommodation space 1111, and the second opening 1123 is arranged opposite to the back surface 124 of the electronic device 12. The first opening and the second opening 1123 are arranged opposite to each other.

[0237] It should be noted that the second opening 1123 can be arranged on the bottom surface 1120, and the second opening 1123 is arranged opposite to the back surface 124 of the electronic device 12. In this way, not only the heat dissipation performance of the electronic device 12 can be improved, but also the charging contact 125 of the electronic device 12 can be exposed to the second opening 1123, thereby realizing the convenient charging of the electronic device 12.

[0238] It should be particularly pointed out that the area of the first opening can be greater than the area of the second opening 1123, and the electronic device 12 can be assembled into the corresponding first space 11111 through the first opening or the second opening 1123.

[0239] In some embodiments, the shell 111 can be a flexible member. The flexible shell 111 is usually made of a flexible material, such as flexible plastic, rubber or special elastic material. In some embodiments, the flexible shell 111 also has excellent impact resistance and anti-vibration performance, which can effectively protect the electronic device 12 and the projection assembly 112 inside from the external environment.

[0240] In order to provide better protection for the display screen 121 of the electronic device 12, in an optional embodiment, as shown in FIG. 36, the shell 111 is provided with a transparent cover plate 1124 at the first opening, and the transparent cover plate 1124 can move relative to the shell 111 to open and close the first opening. For example, the transparent cover plate 1124 is arranged on the top surface 1121 by hinge rotation, so as to be movable relative to the shell 111 to open and close the first opening. In addition, the transparent cover plate 1124 can be made of tempered glass or plastic material.

[0241] It is particularly pointed out that when the shell 111 is provided with the transparent cover plate 1124 at the first opening, the electronic device 12 can be assembled into the corresponding first space 11111 from the second opening 1123.

[0242] In an optional embodiment, as shown in FIG. 38, the projection assembly 112 includes a micro display 1124D and an optical module 1125, the optical module 1125 is located at the light emitting side of the micro display 1124D, the projection window 1112 is located at the light emitting side of the optical module 1125, and the projection assembly 112 further includes a control circuit 1122B, a battery 1121A and a communication unit 1123C located in the accommodation space 1111, and the control circuit 1122B is electrically connected with the micro display 1124D, the battery 1121A and the communication unit 1123C.

[0243] Among them, the accommodation space 1111 is divided into a first space 11111 and a second space 11112, the first space 11111 is suitable for setting the electronic device 12, and the second space 11112 is provided with the micro display 1124D, the optical module 1125, the control circuit 1122B, the battery 1121A and the communication unit 1123C.

[0244] Among them, the micro display 1124D can refer to the related description of the micro display 212 described above, which will not be repeated here. The optical module 1125 can adopt the optical scheme of the refractive lens assembly 320 and the reflecting mirror 330 in the related embodiments of the present application, and the specific description can be referred to the description of the related embodiments. Of course, other ultra-short focus or micro optical schemes can also be adopted, which will not be repeated here.

[0245] The micro display 1124D can provide an image source, such as text, video, information prompts, and the like. The projection window 1112 can be an opening, and an optical protection sheet can be arranged at the light-emitting side of the optical module 1125. The control circuit 1122B is electrically connected to the micro display 1124D, the battery 1121A, and the communication unit 1123C. The communication unit 1123C can be, for example, Bluetooth, 2.4g, or wifi, and the like. The battery 1121A can be, for example, a lithium battery 1121A or a replaceable battery 1121A. The above design enables the projection assembly 112 to realize the function of communication.

[0246] It is particularly pointed out that the height of the optical module 1125 can be flush with the top surface 1121, avoiding damage to the optical module 1125. The height of the optical module 1125 can also be slightly higher than the top surface 1121, facilitating the fixing of the projection angle.

[0247] In optional embodiments, as shown in FIG. 37, a charging assembly 113 is arranged in the housing 111, and the charging assembly 113 is at least configured to establish a charging connection with at least one of the electronic device 12 and the battery 1121A.

[0248] It should be noted that the charging assembly 113 can realize the charging function of the electronic device 12 and the battery 1121A. In this way, the user does not need to carry an additional charger or cable, and can start the charging process through the charging assembly 113.

[0249] It can be understood that the charging assembly 113 can charge the electronic device 12 alone, charge the battery 1121A alone, or charge the electronic device 12 and the battery 1121A simultaneously. In order to realize the charging connection, the charging assembly 113 can adopt wireless charging technology, such as electromagnetic induction, magnetic resonance, or radio frequency technology, and the like. The charging assembly 113 is allowed to establish a wireless connection with the electronic device 12 or the battery 1121A, thereby realizing wireless charging. In some embodiments, the charging assembly 113 can also adopt a wired charging mode, and is connected to the battery 1121A through a cable for charging.

[0250] In optional embodiments, as shown in FIG. 31, the charging assembly 113 includes a conductive part 1131 arranged in the housing 111, and the conductive part 1131 is electrically connected to the battery 1121A. The conductive part 1131 is at least configured to be electrically connected to an external power supply device.

[0251] It should be noted that the conductive piece 1131 can be arranged on the third side surface 1118, one end of the conductive piece 1131 extends into the second space 11112 and is electrically connected with the battery 1121A, and the other end of the conductive piece 1131 is exposed outside the second space 11112, so as to be electrically connected with an external power supply device. Wherein, the conductive piece 1131 can adopt type-c, usb, pogo pin and other electrical connection modes.

[0252] In some embodiments, as shown in FIG. 35, the charging assembly 113 includes a wireless charging coil 1132 arranged on the bottom wall of the accommodating space 1111, and the wireless charging coil 1132 is configured to establish a wireless charging connection with at least one of the electronic device 12 and the battery 1121A.

[0253] Specifically, in the case that the wireless charging coil 1132 is configured to establish a wireless charging connection with the electronic device 12, the wireless charging coil 1132 is arranged on the bottom wall of the first space 11111, and the electronic device 12 is provided with a wireless power receiving coil matched with the wireless charging coil 1132. When current is applied to the wireless charging coil 1132, an electromagnetic field is formed between the wireless charging coil 1132 and the wireless power receiving coil, thereby charging the electronic device 12 by electromagnetic induction method. Wherein, the wireless charging coil 1132 can be arranged around the second opening 1123.

[0254] In the case that the wireless charging coil 1132 is configured to establish a wireless charging connection with the battery 1121A, the wireless charging coil 1132 is arranged on the bottom wall of the second space 11112, and the battery 1121A is provided with a wireless power receiving coil matched with the wireless charging coil 1132. When current is applied to the wireless charging coil 1132, an electromagnetic field is formed between the wireless charging coil 1132 and the wireless power receiving coil, thereby charging the battery 1121A by electromagnetic induction method.

[0255] It should be noted that the wireless charging coil 1132 is arranged on the bottom wall of the first space 11111 and / or the bottom wall of the second space 11112 in a detachable manner, thereby facilitating disassembly, replacement and maintenance.

[0256] In some embodiments, as shown in FIG. 36, in order to shield the magnetic field and improve the performance of wireless charging, the inner and / or outer surface of the transparent cover plate 1124 is provided with a magnetic field shielding film 115, the viewing window 1113 includes a first opening, the accommodation space 1111 communicates with the outside through the first opening, and the display screen 121 of the electronic device 12 is exposed to the first opening. The magnetic field shielding film 115 is arranged along the edge of the first opening to shield the magnetic field. The magnetic field shielding film 115 is arranged along the circumferential direction of the first opening in sequence, and can be understood as being arranged around the edge of the first opening. The magnetic field shielding film 115 is adapted to the edge of the first opening. The magnetic field shielding film 115 is composed of a light-transmitting film, and the image output from the display screen 121 can be easily displayed through the light-transmitting film.

[0257] In some embodiments, the light-transmitting film includes a transparent protective layer, a magnetic field shielding layer, and an adhesive layer, and the adhesive layer is bonded to the transparent cover plate 1124. It can be understood that the magnetic field shielding layer is stacked between the transparent protective layer and the adhesive layer, and the conductive metal wire is arranged in the magnetic field shielding layer in a dot matrix. The magnetic field shielding layer is used to shield the magnetic field.

[0258] In an optional embodiment, the bottom wall of the accommodation space 1111 is provided with a recess corresponding to the position of the wireless charging coil 1132, which is adapted to the back surface 124 of the electronic device 12.

[0259] It should be noted that a recess is provided on the bottom wall of the accommodation space 1111 corresponding to the position of the wireless charging coil 1132. The recess can better adapt to the back surface 124 of the electronic device 12, ensuring that the electronic device 12 can be closely attached to the wireless charging coil 1132 during wireless charging, thereby improving the charging efficiency. The shape and size of the recess are usually customized according to the size and shape of the target electronic device 12 to ensure that they can perfectly match. For example, if the target electronic device 12 is a smart watch, the recess can be designed in a shape that matches the curve of the back surface 124 of the smart watch, to ensure that the smart watch can be stably placed on the wireless charging coil 1132 when placed.

[0260] In an optional embodiment, the recess is provided with a magnetic attraction member adapted to magnetically attract the back surface 124 of the electronic device 12.

[0261] It should be noted that the main function of the magnetic attraction member is to enhance the stability of the connection between the electronic device 12 and the shell 111, and through magnetic attraction, the electronic device 12 can be more firmly fixed in the recess. It can be understood that the wireless power receiving coil of the electronic device 12 can always be matched with the wireless charging coil 1132, ensuring the reliability of charging.

[0262] The magnetic attraction elements can be a kind of strong magnetic material, such as neodymium iron boron magnets, which are fixed in place in the recess. When the back surface 124 of the electronic device 12 is close to the recess, the magnetic attraction elements will generate an attractive force to firmly attract the electronic device 12 to the recess. This magnetic attraction method is not only convenient and fast, but also can ensure that the electronic device 12 will not be displaced due to slight vibration or touch during charging.

[0263] In some embodiments, when the electronic device 12 is assembled to the shell, the user does not need to accurately align the position of the wireless charging coil 1132, but only needs to place the electronic device 12 close to the recess, and the magnetic attraction elements will automatically attract the electronic device 12 to the correct mounting position.

[0264] In some embodiments, as shown in FIG. 35, the shell 111 is provided with an electrical input interface 1133, for example, the second side 1117 is provided with the electrical input interface 1133, and the wireless charging coil 1132 is electrically connected with the external power supply device through the electrical input interface 1133. The electrical input interface 1133 can adopt type-c, usb, pogo pin, etc.

[0265] In optional embodiments, as shown in FIG. 37, a heat dissipation pad 114 is further included, which is arranged on the bottom wall of the accommodating space 1111, and is adapted to abut against the back surface 124 of the electronic device 12. For example, the heat dissipation pad 114 is arranged on the bottom wall of the first space 11111.

[0266] The heat dissipation pad 114 includes an outer skin and a cooling medium. The outer skin is made of a flexible material, and the outer skin forms an accommodating cavity. The cooling medium is filled in the accommodating cavity. The heat dissipation pad 114 is elastically pressed against the back surface 124 of the electronic device 12, and can simultaneously absorb and cool heat.

[0267] In addition, the near-skin side of the shell 111 is provided with a cooling bag, which absorbs heat generated during wireless charging or heat generated when the user is active. The cooling bag has a flexible outer skin and a cooling fluid. The flexible outer skin forms an accommodating cavity, and the cooling medium is filled in the accommodating cavity. The flexible outer skin is made of an electromagnetic shielding material to gently contact the user's body, provide a comfortable and pleasant texture, and shield the magnetic field, thereby minimizing the impact of the magnetic field on the human body and improving the performance of wireless charging.

[0268] In some embodiments, as shown in FIGS. 31, 32, 33, 34 and 40, the present application further provides an electronic device assembly 1, which includes an electronic device 12 and the above-mentioned shell 11 of the electronic device. The electronic device 12 is arranged in the accommodating space 1111, and the display screen 121 of the electronic device 12 is arranged opposite to the observation window 1113.

[0269] Specifically, the electronic device 12 is located in the first space 11111, the display screen 121 of the electronic device 12 is arranged opposite to the first opening, and the projection assembly 112 is located in the second space 11112. As shown in FIGS. 41 and 42, the electronic device 12 can be connected with the smart terminal 2 such as a mobile phone or a computer to realize data interaction, or the electronic device 12 can be directly connected with the server 3 to realize data interaction. Of course, in other embodiments, the electronic device 12 can also be indirectly connected with the server 3 through the smart terminal 2 to realize data interaction.

[0270] In the embodiment of the present application, since the electronic device assembly 1 comprises the housing 11 of the electronic device as described above, the specific structure of the housing 11 of the electronic device is referred to the above embodiments, and the electronic device assembly 1 shown in the embodiment comprises all the technical solutions of the above embodiments, and therefore at least has all the beneficial effects obtained by the above technical solutions, which will not be repeated here.

[0271] It is worth noting that the electronic device 12 can be a mobile phone or a watch. As shown in FIG. 39(a), when the electronic device 12 is a watch, the display screen 121 of the watch is circular, and correspondingly, the first opening is circular, and the projection direction L (the light output axis direction of the projection assembly 112) of the projection assembly 112 is arranged along the first direction, which is perpendicular to the connection direction of the two watch bands 122.

[0272] As shown in FIGS. 39(b) and 39(c), when the electronic device 12 is a rectangular mobile phone or a tablet, the display screen 121 of the mobile phone is rectangular, and correspondingly, the first opening is rectangular, and the projection direction L (the light output axis direction of the projection assembly 112) of the projection assembly 112 is arranged along the second direction, which is the same as the length or width direction of the display screen 121.

[0273] As shown in FIG. 31, FIG. 32, FIG. 35, FIG. 37 and FIG. 38, the shell 11 of the electronic device according to the embodiments of the present application comprises a housing 111, a projection assembly 112, a battery 113, a wireless charging coil 1132 and an electrical input interface 1133. The battery 1121A is electrically connected to the projection assembly 112; the wireless charging coil 1132 is arranged on the bottom wall of the accommodating space 1111, and is configured to establish a wireless charging connection with the electronic device 12; and the electrical input interface 1133 is electrically connected to the battery 1121A and the wireless charging coil 1132, and is configured to receive an external power supply and charge the battery 1121A, and is also configured to receive an external power supply and charge the electronic device 12 by the wireless charging coil 1132. The electrical input interface 1133 can adopt a type-c, USB, pogo pin or other electrical connection mode. It should be noted that when the wireless charging coil 1132 is configured to establish a wireless charging connection with the electronic device 12, the wireless charging coil 1132 is arranged on the bottom wall of the accommodating space 1111, and a wireless power receiving coil adapted to the wireless charging coil 1132 is arranged in the electronic device 12. When current is applied to the wireless charging coil 1132, an electromagnetic field is formed between the wireless charging coil 1132 and the wireless power receiving coil, so that the electronic device 12 is charged by electromagnetic induction.

[0274] The battery 1121A is electrically connected to the projection assembly 112, and can provide necessary power to drive the operation of the projection assembly 112. It can be understood that the projection assembly 112 can also operate the projection function without external power supply.

[0275] During the charging process, the electrical input interface 1133 first receives an external power supply. When the external power supply is connected, the electrical input interface 1133 will deliver power to the battery 1121A and the wireless charging coil 1132, so as to charge the battery 1121A and the electronic device 12. In this way, the battery 1121A and the wireless charging coil 1132 can share one electrical input interface 1133, which simplifies the structure design.

[0276] In an optional embodiment, as shown in FIG. 34, when the user wears the smart watch and sweats, the sweat stays between the wrist and the housing 111, causing an unpleasant feeling, or in severe cases, causing skin problems. Therefore, the shell 11 of the electronic device further comprises a moisture absorption net 118 arranged on the skin side of the housing 111, which is adapted to contact the skin of the user's wrist.

[0277] Specifically, the moisture absorbing net 118 is made of a material that absorbs sweat to swell when contacting the skin of the user's wrist. The moisture absorbing net 118 has a mesh structure in which fibers that swell when absorbing moisture are arranged in a dot matrix form, absorbs sweat and swells to form a ventilation space between the wrist and the shell 111 to prevent sweating. In addition, the moisture absorbing net 118 can be made of a disposable net, and the moisture absorbing net 118 is detachably disposed on the skin side of the shell 111 to facilitate replacement.

[0278] In some scenarios, how to charge various devices located in the protective sleeve is one of the problems that need to be solved at present.

[0279] The electronic device provided by the embodiment of the present application is shown in FIGS. 43-44 and 31-32, and an electronic device assembly is provided, which includes: a protective sleeve 111 formed with an accommodation cavity 1111 and a viewing window 120 and a projection window 1112 communicating with the accommodation cavity 1111, the area of the viewing window 120 being greater than the area of the projection window 1112; an electronic device 200 disposed in the accommodation cavity 1111, the display screen 121 of the electronic device 200 being disposed opposite the viewing window 120; a projection assembly 300 mounted in the accommodation cavity 1111, the projection assembly 300 being disposed corresponding to the projection window 1112, the projection assembly 300 being configured to project light from the projection window 1112; a first battery 440 mounted on the protective sleeve 111, a second battery 540 electrically connected to the projection assembly 300 to supply power to the projection assembly 300, and the first battery 440 being configured to be electrically connected to the second battery 540 to charge the second battery 540, and the electronic device 200 being configured to be electrically connected to the second battery 540 to charge the second battery 540. It can be understood that the protective sleeve 111 and the shell 111 in the related embodiments of the present application can be the same component. In the related embodiments, the protective sleeve with the reference number 111 and the shell with the reference number 111 are the same component.

[0280] It can be understood that in the embodiment, the protective sleeve 111 is formed with an accommodation cavity 1111 for accommodating and protecting the electronic device 200. At the same time, the protective sleeve 111 is provided with a viewing window 120 and a projection window 1112, both of which communicate with the accommodation cavity 1111. The viewing window 120 allows the user to directly view the display screen 121 of the electronic device 200 without opening the protective sleeve 111, and the projection window 1112 corresponds to the projection assembly 300 to assist the projection assembly 300 to realize the corresponding function, and the area of the viewing window 120 is greater than the area of the projection window 1112, so as to facilitate the user to observe the display screen 121 of the electronic device 200 from the viewing window 120.

[0281] The electronic device 200 is arranged in the accommodating cavity 1111 of the protective sleeve 111, and the display screen 121 is arranged opposite to the observation window 120 of the protective sleeve 111, so that the user can clearly see the content of the display screen 121. In some embodiments, the electronic device 200 also has the ability to be electrically connected with the projection assembly 300, so as to charge the second battery 540 of the projection assembly 300 when needed. The projection assembly 300 is mounted in the accommodating cavity 1111 of the protective sleeve 111 and is arranged corresponding to the projection window 1112. The projection assembly 300 is electrically connected with the second battery 540 and is powered by the second battery 540, and the projection is performed through the window of the projection window 1112.

[0282] The electronic device assembly of the embodiment includes two independent batteries: the first battery 440 and the second battery 540. The first battery 440 is mounted in the protective sleeve 111, and the second battery 540 is electrically connected with the projection assembly 300 to provide power for the projection assembly 300. At the same time, the first battery 440 is configured to be electrically connected with the second battery 540, so as to charge the second battery 540 when needed. In some embodiments, the electronic device 200 is also configured to be electrically connected with the second battery 540, so that the electronic device 200 can charge the second battery 540. Through the double charging mode configuration, the continuous power supply capability of the projection assembly 300 is ensured, and the situation that the use experience is affected due to insufficient power is avoided.

[0283] In an optional implementation, the projection assembly 300 is detachably mounted in the protective sleeve 111, allowing the user to quickly replace or add the projection assembly 300 according to actual needs, without the need to replace the entire electronic device 200, improving the flexibility and expandability of the device, and the user can select to carry the required projection assembly 300 according to different scenes, reducing the weight and volume of the overall device, facilitating carrying and storage, and when a certain projection assembly 300 fails, the user can easily disassemble and replace it, reducing maintenance cost and time.

[0284] The projection assembly 310 can project the display content of the electronic device 200 to an external screen or a hand, providing the user with a clearer and more convenient viewing experience.

[0285] The electronic device assembly provided in the application provides comprehensive protection for the electronic device 200, ensures that the device is not damaged by the outside world, and also expands the projection assembly 300. By integrating the projection assembly 300, the electronic device assembly has a projection function, meeting different needs of users. For example, the projection assembly 310 can be integrated in the protective sleeve 111, so that the user does not need to carry an additional projector device and can perform projection operations anytime and anywhere. At the same time, the existence of the observation window 120 enables the user to normally use the display screen 121 of the electronic device 200 when using the projection function. The user can enjoy a more rich and convenient interactive experience when using the electronic device 200. In addition, the protective sleeve 111 and the projection assembly 300 are provided with mutually independent batteries, the first battery 440 of the protective sleeve 111 can charge the second battery 540, and the electronic device 200 can also charge the second battery 540. The dual charging mode of the second battery 540 ensures the endurance and charging flexibility of the projection assembly 300, provides a convenient charging mode and a rich interactive experience.

[0286] According to one embodiment of the application, as shown in FIGS. 31, 43 and 44, the electronic device 200 is provided with a first charging coil 241, and the protective sleeve 111 is also provided with a second coil 510. The second battery 540 is electrically connected with the second charging coil 541, and when the electronic device 200 is installed in the accommodating cavity 1111, the first charging coil 241 is adapted to be coupled with the second charging coil 541 to charge the second battery 540 through the second charging coil 541.

[0287] It can be understood that in the embodiment, when the electronic device 200 is installed in the accommodating cavity 1111 of the protective sleeve 111, the first charging coil 241 can be close to and coupled with the second charging coil 541. Based on the principle of electromagnetic induction, electric energy can be transmitted from the first charging coil 241 to the second charging coil 541. The electric energy received by the second charging coil 541 is then used to charge the second battery 540, which is used to provide electric energy for the work of the projection assembly 300. This process is wireless and does not require any physical connection, providing a convenient and flexible way.

[0288] In an optional embodiment, the first battery 440 and the second battery 540 are connected through a first charging circuit 444. The first battery 440 can charge the second battery 540 through the first charging circuit 444. The first battery 440 and the second battery 540 are wiredly charged. Compared with wireless charging, wired charging generally has higher charging efficiency and can charge the second battery 540 faster. The wired charging method reduces the charging efficiency fluctuation caused by magnetic field interference, distance and alignment problems, and provides a more stable charging environment.

[0289] In an optional embodiment, the second battery 540 is connected with a second charging circuit 544, the second charging circuit 544 is electrically connected to the first battery 440 and the second charging coil 541, and the second battery 540 can be charged by the first battery 440 or the second charging coil 541.

[0290] According to an embodiment of the present application, referring to FIG. 32, FIG. 43 and FIG. 44, the protective sleeve 111 is further provided with a third charging coil 441, the third charging coil 441 is arranged around the outside of the second charging coil 541 and is spaced apart from the second charging coil 541, the first battery 440 is electrically connected to the third charging coil 441, and when the electronic device 200 is installed in the accommodating cavity 1111, the third charging coil 441 is adapted to be coupled with the first charging coil 241 to charge the electronic device 200.

[0291] It can be understood that in the embodiment, the first battery 440 in the protective sleeve 111 is connected with the third charging coil 441, the third charging coil 441 is installed at a proper position of the protective sleeve 111, and when the electronic device 200 is installed in the accommodating cavity 1111, the third charging coil 441 can be coupled with the first charging coil 241 on the electronic device 200, thereby realizing wireless charging of the electronic device 200.

[0292] In the embodiment, the first battery 440 installed on the protective sleeve 111 can charge the electronic device 200 in addition to charging the second battery 540, thereby ensuring that the electronic device 200 also has sufficient endurance.

[0293] According to an embodiment of the present application, referring to FIG. 43 and FIG. 44, the third charging coil 441 is arranged around the outside of the second charging coil 541 and is spaced apart from the second charging coil 541. In this way, when the electronic device 200 is installed in the protective sleeve 111, the first charging coil 241 on the protective sleeve 111 can be close to the second charging coil 541 and the third charging coil 441 at the same time, and the charging relationship among the first battery 440, the second battery 540 and the electronic device 200 can be controlled by controlling the operation of the corresponding charging coils.

[0294] When the second battery 540 needs to be charged, the charging management system can control the first charging coil 241 to work to obtain power from the electronic device 200 by electromagnetic induction principle to charge the second battery 540; when the electronic device 200 needs to be charged, the charging management system can control the third coil to work to provide wireless charging for the electronic device 200 by electromagnetic induction principle.

[0295] In some embodiments, the charging management system can set the priority of charging as needed. For example, when the first battery 440 has limited power, the electronic device 200 can be charged in priority to ensure its normal operation; or the second battery 540 can be charged in priority to be prepared for unexpected situations. The charging management system can monitor the power and charging state of the battery in real time, and start or stop the corresponding charging coil as needed. For example, when the second battery 540 is fully charged, the second charging coil 541 can be turned off to save energy; when the electronic device 200 does not need to be charged, the third charging coil 441 can be turned off to reduce electromagnetic radiation.

[0296] According to one embodiment of the present application, referring to FIG. 43, the first charging coil 241 includes a transmitting circuit, and the electronic device assembly is further provided with a first power sensor, a first comparison circuit and a control circuit 442; the first power sensor is used to detect the first power of the first battery 440 and send the first power to the first comparison circuit; the first comparison circuit is used to compare the first power with a first preset power, and output a high level to the control circuit 442 when the first power is greater than or equal to the first preset power, and output a low level to the control circuit 442 when the first power is less than the first preset power; the control circuit 442 is used to control the first battery 440 to charge the second battery 540 when receiving the high level, and control the transmitting circuit to work to make the electronic device 200 charge the second battery 540 when receiving the low level.

[0297] It can be understood that in the present embodiment, the first charging coil 241 includes a transmitting circuit, and the transmitting circuit can transfer energy between the second charging coil 541 when working, realizing the charging of the second battery 540 by the electronic device 200. Specifically, when charging the second battery 540, the first battery 440 is used to charge the second battery 540 in priority, and when the power of the first battery 440 is below a certain level, the second battery 540 is charged by the electronic device 200 to ensure the normal work of the projection assembly 300.

[0298] When the second battery 540 needs to be charged, the system detects the power of the first battery 440 in real time through the first power sensor, and the first comparison circuit compares the detected power of the first battery 440 with a preset first preset power. When the power of the first battery 440 is greater than or equal to the first preset power, the first comparison circuit outputs a high level to the control circuit 442. When the power of the first battery 440 is less than the first preset power, the first comparison circuit outputs a low level to the control circuit 442.

[0299] When the control circuit 442 receives a high level, it controls the first battery 440 to charge the second battery 540. This is because at this time the first battery 440 has enough power, and preferentially using the first battery 440 to charge the second battery 540 can ensure the overall efficiency of the system. When the control circuit 442 receives a low level, it controls the transmitting circuit of the first charging coil 241 to work, so that the electronic device 200 can charge the second battery 540 through wireless charging. This is because at this time the first battery 440 has low power, in order to ensure the power supply of other important components, the system selects to use the remaining power of the electronic device 200 to charge the second battery 540 through wireless mode, to ensure the continuous operation of the system.

[0300] According to an embodiment of the present application, referring to FIG. 43, the first charging coil 241 includes a receiving circuit, and the electronic device assembly is further configured with a second power sensor and a second comparison circuit; the second power sensor is used to detect the second power of the electronic device 200 and send the second power to the second comparison circuit; the second comparison circuit is used to compare the second power with the second power threshold value, and output a high level to the control circuit 442 when the second power is less than the second power threshold value; the control circuit 442 is used to control the receiving circuit to work when receiving the high level, so as to charge the electronic device 200 by the first battery 440.

[0301] In this embodiment, when it is detected that the power of the electronic device 200 is lower than the preset value, the electronic device 200 can be charged by the first battery 440. Specifically, the second power sensor detects the second power of the electronic device 200 in real time and sends the second power to the comparison circuit. The comparison circuit sends a control signal to the control circuit 442 based on the relationship between the second power and the second power threshold value. The control circuit 442 starts the receiving circuit after receiving the high level signal from the comparison circuit. The third charging coil 441 can charge the electronic device 200 through the receiving circuit, avoiding device shutdown or performance degradation due to insufficient power, prolonging the endurance time of the electronic device 200, and improving the user experience.

[0302] It can be understood that the first power threshold value and the second power threshold value can be the same or different. In an optional embodiment, the first power threshold value and the second power threshold value can be 30% of the full power. In other embodiments, they can also be other values, which can be designed and adjusted according to specific needs, and this embodiment does not make specific limitations.

[0303] According to an embodiment of the present application, referring to FIG. 32 and FIG. 43, the protective sleeve 111 is provided with an external charging interface 170, the external charging interface 170 is electrically connected with the first battery 440, and the external charging interface 170 is configured to receive an external power supply and charge the electronic device 200 and the first battery 440.

[0304] It can be understood that, in the embodiment, the external charging interface 170 is arranged on the protective sleeve 111, the external charging interface 170 can be configured to receive an external power supply and charge the electronic device 200, and the external charging interface 170 can also be configured to receive an external power supply and charge the first battery 440, so that the first battery 440 and the electronic device 200 can share one external charging interface 170, which simplifies the structural design and reduces the occupied volume of the electronic device components.

[0305] According to an embodiment of the present application, referring to FIG. 43, the second comparison circuit is connected with a Hall switch, the protective sleeve 111 is provided with an electromagnet 443 corresponding to the Hall switch, and the first battery 440 is connected with the electromagnet 443, and the Hall switch is adapted to detect the magnetic field signal of the electromagnet 443, so as to detect the power information of the first battery 440 based on the magnetic field signal of the electromagnet 443.

[0306] It can be understood that, in the embodiment, when the power of the first battery 440 is sufficient, the electromagnet 443 is powered on and generates a magnetic field, the Hall switch can detect the presence or absence and strength of the magnetic field signal of the electromagnet 443, and the control circuit 442 judges that the power of the first battery 440 is sufficient by reading the state of the Hall switch; with the use of the first battery 440, the power gradually decreases. When the power is lower than a certain preset power value, the electromagnet 443 is powered off and the generated magnetic field disappears, and the control circuit 442 judges that the power of the first battery 440 is insufficient after reading the change of the state of the Hall switch, at this time the control circuit 442 can start the electronic device 200 to charge the second battery 540.

[0307] The above is only the implementation of the embodiment of the present application, and does not limit the patent scope of the embodiment of the present application, the above specific implementation is only illustrative, but not restrictive, the person skilled in the art can make equivalent structure or equivalent flow transformation according to the content of the embodiment of the present application and the drawings, or directly or indirectly apply to other related technical fields, without departing from the purpose of the present application and the protection scope of the claims, many forms can also be made, which are also included in the patent protection scope of the embodiment of the present application.

Claims

1. A housing (11) for an electronic device, wherein, The application relates to a shell (111) provided with a containing space (1111) and an observation window (1113) and a projection window (1112) communicating with the containing space (1111), the containing space (1111) being configured to be suitable for arranging an electronic device (12), the observation window (1113) being arranged opposite to a display screen (121) of the electronic device (12); a projection assembly (112) is arranged in the shell (111), and in a first plane projection, the projection assembly (112) and the observation window (1113) are arranged at intervals, and light rays of the projection assembly (112) are configured to be transmitted through the projection window (1112). The containing space (1111) is divided into a first space (11111) suitable for arranging the electronic device (12) and a second space (11112) provided with the projection assembly (112), and the first space (11111) and the second space (11112) are isolated from each other. The shell (111) comprises a top surface (1121), a bottom surface (1120), a first side surface (1116), a second side surface (1117), a third side surface (1118) and a fourth side surface (1119), the first side surface (1116), the second side surface (1117), the third side surface (1118) and the fourth side surface (1119) are sequentially and circularly connected, the first side surface (1116), the second side surface (1117), the third side surface (1118) and the fourth side surface (1119) are connected with the top surface (1121) and the bottom surface (1120) respectively, the first side surface (1116) and the third side surface (1118) are arranged oppositely, the second side surface (1117) and the fourth side surface (1119) are arranged oppositely, and the top surface (1121) and the bottom surface (1120) are arranged oppositely; wherein the observation window (1113) is arranged on the top surface (1121), and the projection window (1112) is arranged on the first side surface (1116).

2. The housing (11) of an electronic device according to claim 1, wherein The first side surface (1116), the second side surface (1117), the third side surface (1118) and the fourth side surface (1119) all comprise curved surfaces, the connecting position of the first side surface (1116) and the second side surface (1117) is arc-shaped, the connecting position of the second side surface (1117) and the third side surface (1118) is arc-shaped, the connecting position of the third side surface (1118) and the fourth side surface (1119) is arc-shaped, and the connecting position of the fourth side surface (1119) and the first side surface (1116) is arc-shaped.

3. The housing (11) of an electronic device according to claim 1, wherein The first side surface (1116) and the second side surface (1117) and the first side surface (1116) and the fourth side surface (1119) all surround to form a clamping part (1122) matched with a top corner of the electronic device (12).

4. The housing (11) of an electronic device according to claim 3, wherein ​ 5. The housing (11) of an electronic device according to claim 4, wherein ​ 6. The housing (11) of an electronic device according to claim 1, wherein The shell (111) comprises a top surface (1121), a bottom surface (1120), a first side surface (1116), a second side surface (1117), a third side surface (1118) and a fourth side surface (1119), the fourth side surface (1119), the first side surface (1116) and the second side surface (1117) are sequentially connected, the first side surface (1116), the second side surface (1117) and the fourth side surface (1119) are connected with the top surface (1121) and the bottom surface (1120) respectively, the third side surface (1118) is connected with the bottom surface (1120), the first side surface (1116) and the third side surface (1118) are oppositely arranged, the second side surface (1117) and the fourth side surface (1119) are oppositely arranged, and the top surface (1121) and the bottom surface (1120) are oppositely arranged. The top surface (1121), the bottom surface (1120), the first side surface (1116), the second side surface (1117) and the fourth side surface (1119) are enclosed to form a space suitable for arranging the projection assembly (112), and the bottom surface (1120), the second side surface (1117), the third side surface (1118) and the fourth side surface (1119) are enclosed to form a space suitable for arranging the electronic device (12).

7. The housing (11) of an electronic device according to claim 1, wherein The observation window (1113) and the projection window (1112) are arranged at different sides of the shell (111), and the light-out axial direction of the display screen (121) and the light-out axial direction of the projection assembly (112) are arranged at an angle.

8. The housing (11) of an electronic device according to claim 7, wherein The light-out axial direction of the display screen (121) and the light-out axial direction of the projection assembly (112) are perpendicular to each other.

9. The housing (11) of an electronic device according to any one of claims 1 to 8, wherein The shell (111) is provided with an avoiding hole (1115) communicating with the accommodating space (1111), and the avoiding hole (1115) is arranged corresponding to the button (123) of the electronic device (12); and / or, The shell (111) is provided with a through hole (1114) communicating with the accommodating space (1111), and the through hole (1114) is arranged corresponding to the connecting piece of the electronic device (12); wherein, two through holes (1114) are oppositely arranged, and the through hole (1114) and the avoiding hole (1115) are arranged at different sides of the shell (111).

10. The housing (11) of an electronic device according to any one of claims 1 to 8, wherein The observation window (1113) comprises a first opening, the accommodating space (1111) communicates with the outside through the first opening, and the display screen (121) of the electronic device (12) is exposed to the first opening; and / or, The shell (111) is further provided with a second opening (1123) communicating with the accommodating space (1111), and the second opening (1123) is oppositely arranged with the back surface (124) of the electronic device (12); and / or, The shell (111) is a flexible member.

11. The housing (11) of an electronic device according to claim 10, wherein The shell (111) is provided with a transparent cover plate (1124) at the first opening, and the transparent cover plate (1124) is movable relative to the shell (111) to open and close the first opening.

12. The housing (11) of an electronic device according to any one of claims 1 to 8, wherein The projection assembly (112) includes the micro display (1124D) and an optical module (1125) located on the light-emitting side of the micro display (1124D), and the projection window (1112) is located on the light-emitting side of the optical module (1125). The projection assembly (112) further includes a control circuit (1122B), a battery (1121A) and a communication unit (1123C) located in the accommodation space (1111), and the control circuit (1122B) is electrically connected to the micro display (1124D), the battery (1121A), the communication unit (1123C). The accommodation space (1111) is divided into a first space (11111) and a second space (11112), the first space (11111) is suitable for setting an electronic device (12), and the second space (11112) is provided with the micro display (1124D), the optical module (1125), the control circuit (1122B), the battery (1121A) and the communication unit (1123C).

13. The housing (11) of an electronic device according to claim 12, wherein Further comprising a charging assembly (113) provided in the shell (111), the charging assembly (113) is at least configured to establish a charging connection with at least one of the electronic device (12) and the battery (1121A).

14. The housing (11) of an electronic device according to claim 13, wherein The charging assembly (113) includes a conductive member (1131) provided in the shell (111), the conductive member (1131) is electrically connected with the battery (1121A), and the conductive member (1131) is at least configured to be electrically connected with an external power supply device; and / or, The charging assembly (113) includes a wireless charging coil (1132) provided on the bottom wall of the accommodation space (1111), and the wireless charging coil (1132) is configured to establish a wireless charging connection with at least one of the electronic device (12) and the battery (1121A).

15. The housing (11) of an electronic device according to any one of claims 1 to 8, wherein Further comprising a heat dissipation pad (114) provided on the bottom wall of the accommodation space (1111), and the heat dissipation pad (114) is suitable for abutting against the back surface (124) of the electronic device (12).

16. The housing (11) of an electronic device according to claim 1, wherein The magnetic field shielding film (115) is arranged on the inner surface or the outer surface of the transparent cover plate (1124) to shield the magnetic field.

17. The housing (11) of an electronic device according to claim 14, wherein A recessed portion adapted to the back surface (124) of the electronic device (12) is arranged on the bottom wall of the accommodating space (1111) and corresponds to the wireless charging coil (114); The recessed portion is provided with a magnetic suction element adapted to be magnetically adsorbed with the back surface (124) of the electronic device (12).

18. An electronic device assembly (1), wherein The electronic device (12) and the shell (11) of the electronic device are provided, wherein the shell (11) comprises a shell (111), the shell (111) is provided with an accommodating space (1111), an observation window (1113) and a projection window (1112) communicating with the accommodating space (1111), the accommodating space (1111) is configured to be adapted to arrange the electronic device (12), and the observation window (1113) is arranged opposite to the display screen (121) of the electronic device (12); The projection assembly (112) is located in the shell (111), and in the first plane projection, the projection assembly (112) and the observation window (1113) are arranged at intervals, and the light of the projection assembly (112) is configured to be transmitted through the projection window (1112); The electronic device (12) is arranged in the accommodating space (1111), and the display screen (121) of the electronic device (12) is arranged opposite to the observation window (1113).

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