Lens module and control method thereof, and head-mounted device

Abstract

The invention relates to the technical field of head-mounted devices, provides a lens module, a control method thereof and a head-mounted device, and can solve the problem that the function adjustment of the head-mounted device is inconvenient in the prior art. The lens module comprises a bearing support, a lens cone assembly, a driving device, an adjusting device and a controller, the lens cone assembly is used for installing a lens group and comprises a lens cone arranged on the bearing support and a lens movable support arranged in the lens cone, and the lens movable support is used for installing at least one lens in the lens group; the driving device is used for driving the lens movable bracket to move relative to the bearing bracket; the adjusting device comprises a knob support, a knob and a sensor, wherein the knob and the sensor are arranged on the knob support. The sensor is used for detecting the rotation amount of the knob relative to the knob support. The controller is electrically connected with the driving device and the sensor and used for controlling the driving device to execute the first function according to the rotation amount of the rotary knob. The method can be applied to head-mounted equipment such as intelligent glasses.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of head-mounted devices, and in particular to a lens module, a control method thereof, and a head-mounted device. BACKGROUND

[0002] With the development of electronic technology, head-mounted devices have emerged as the times require. A head-mounted device is a device that is worn on the head or in front of the eyes of a user, and can provide one or more functions, such as virtual reality (VR), augmented reality (AR), mixed reality (MR), and the like. Through these functions, the head-mounted device can provide an immersive and interactive experience for the user. Therefore, the head-mounted device is widely used in games, training, scientific research, design, military training, and the like.

[0003] In order to meet the use requirements of users with different vision and interpupillary distances, the head-mounted device usually has function adjustment, such as myopia function adjustment and interpupillary distance function adjustment. The myopia function adjustment helps users with myopia to use the head-mounted device comfortably without wearing traditional glasses. The interpupillary distance function adjustment ensures that the center of the lens of the head-mounted device can accurately align with the pupil of the user when the user uses the head-mounted device, thereby providing a clearer and more comfortable visual experience. The function adjustment of the head-mounted device is achieved by adjusting the structure. How to design the adjusting structure of the head-mounted device has become one of the important topics in the industry. SUMMARY

[0004] Embodiments of the present application provide a lens module, a control method thereof, and a head-mounted device, to solve the problem that in the related art, a large torque is required to rotate the knob of the head-mounted device, making the function adjustment of the head-mounted device inconvenient.

[0005] To achieve the above object, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the embodiments of the present application provide a lens module for a head-mounted device, comprising a bearing support, a lens barrel assembly, a driving device, an adjusting device, and a controller. The lens barrel assembly is used to mount a lens group and comprises a lens barrel arranged on the bearing support and a lens movable support arranged in the lens barrel. The lens movable support is used to mount at least one lens in the lens group. The driving device is used to drive at least one of the lens movable support and the lens barrel to move relative to the bearing support to perform a first function. The first function includes interpupillary distance adjustment and / or focal length adjustment of the lens group. The adjusting device comprises a knob support, a knob arranged on the knob support, and a sensor. The knob is rotatably connected to the knob support. The sensor is used to detect the rotation amount of the knob relative to the knob support. The controller is electrically connected to the driving device and the sensor. The controller is used to control the driving device to perform the first function according to the rotation amount of the knob relative to the knob support.

[0007] The lens module in the embodiment of the application is electrically connected with the sensor of the driving device and the adjusting device through the controller. When the function of the head-mounted device needs to be adjusted, the knob is rotated, and the controller can control the driving device to perform the first function according to the rotation amount of the knob detected by the sensor, so as to realize the function adjustment of the head-mounted device. The knob is connected with the driving device through a signal connection, so that the knob is not connected with the mechanical transmission mechanism, and the influence of the mechanical transmission mechanism on the rotation torque of the knob is avoided. Therefore, the damping force of the knob during rotation can be optimized according to the actual needs of the user, so that the rotation feeling of the knob is better, and the user can conveniently adjust the function of the head-mounted device.

[0008] In some embodiments of the first aspect, the knob is movably connected with the knob support in the axial direction of the knob, so that the knob can move between the inserted position and the pulled-out position. The height of the knob protruding from the knob support in the pulled-out position is greater than the height of the knob protruding from the knob support in the inserted position. The knob can rotate relative to the knob support in both the inserted position and the pulled-out position. The sensor is further configured to detect a first parameter value, which is used to reflect the position information of the knob relative to the knob support in the axial direction of the knob. In this way, the same knob can control multiple functions of the head-mounted device, and the operation experience of the user on the head-mounted device is improved.

[0009] In some embodiments of the first aspect, the outer wall of the knob has a detection area, which includes a first detection area and a second detection area arranged in the axial direction of the knob and having different reflectivities. The sensor includes a light emitting portion, a light receiving portion, and a processor. The light emitting portion is configured to emit a first light beam toward the detection area. The light receiving portion is configured to receive a reflected light beam of the first light beam after being reflected by the detection area. The processor is configured to determine a first parameter value according to the reflected light beam received by the light receiving portion. The first parameter value includes at least one of the exposure time of the light receiving portion, the intensity value of the reflected light beam, and the brightness value of the reflected light beam. When the knob is located in the inserted position, the light emitting portion is arranged toward the first detection area. When the knob is located in the pulled-out position, the light emitting portion is arranged toward the second detection area. In this way, the axial position of the knob support can be measured with high accuracy, and mechanical pressure or thermal effects are not generated on the knob, so that damage to the knob is avoided.

[0010] In some embodiments of the first aspect, the knob includes a knob rod and a rotating portion connected to one end of the knob rod. The knob rod is a metal rod or an alloy rod. The peripheral wall of the knob rod has a polished area and a non-polished area. The roughness of the polished area is less than the roughness of the non-polished area. One of the polished area and the non-polished area is the first detection area, and the other is the second detection area. In this way, the structure of the knob rod is simple, and no additional coating needs to be applied to the knob rod, so that the manufacturing of the knob rod is facilitated.

[0011] In some embodiments of the first aspect, the knob comprises a knob rod and a rotating part connected to one end of the knob rod; a part of the circumferential wall of the knob rod is covered with a reflective layer, and another part of the circumferential wall of the knob rod is covered with a light-absorbing layer, one of the reflective layer and the light-absorbing layer is the first detection area, and the other of the reflective layer and the light-absorbing layer is the second detection area. In this way, the material of the knob rod is less restricted.

[0012] In some embodiments of the first aspect, the knob comprises a knob rod and a rotating part connected to one end of the knob rod; the rotating part comprises an outer knob cap and an inner knob cap, the outer knob cap is a plastic part and is sleeved outside the inner knob cap, the inner knob cap is a metal part or an alloy part, the knob rod is a metal part or an alloy part, the outer knob cap is connected to the inner knob cap through a buckle structure, so that the outer knob cap and the inner knob cap are relatively fixed in the circumferential direction of the knob, and the end of the knob rod is fixedly connected to the inner knob cap. In this way, the connection between the rotating part and the knob rod can be more firm, and the knob rod can be prevented from being deflected.

[0013] In some embodiments of the first aspect, the buckle structure comprises a protruding rib arranged on the inner knob cap and a clamping groove arranged on the outer knob cap, and the protruding rib is clamped with the clamping groove.

[0014] In some embodiments of the first aspect, the controller is configured to: determine the position of the knob in the axial direction of the knob relative to the knob support according to the size of the first parameter value; when the knob is located in one of the insertion position and the pulling-out position, the controller controls the driving device to perform the first function according to the amount of rotation of the knob relative to the knob support; and when the knob is located in the other of the insertion position and the pulling-out position, the controller controls the head-mounted device to perform the second function according to the amount of rotation of the knob relative to the knob support; wherein the second function can be volume adjustment or fast forward / fast reverse adjustment. In this way, the user can perform two operations through the knob, and the same knob can be used to control multiple functions of the head-mounted device through different operations.

[0015] In some embodiments of the first aspect, the adjusting device further comprises a button element arranged on the knob support and opposite to the end surface of the knob, and the button element can be pressed by the knob. The button element can be a thin film button such as a DOME button, or a tactile switch. In this way, the operation function of the knob can be enriched, and the knob can be rotated and pressed, so that the same knob can be used to control multiple functions of the head-mounted device.

[0016] In some embodiments of the first aspect, the controller is electrically connected with the key element; and the controller is configured to control the head-mounted device to perform a third function when the key element is pressed by the knob, wherein the third function can be a pause / play function. In this way, the controller can control the head-mounted device to perform multiple functions according to the rotation operation and the pressing operation of the knob.

[0017] In some embodiments of the first aspect, the outer wall of the knob has a detection area, the roughness of different regions of the detection area is different along the circumference of the knob, the sensor includes a light emitting portion, a light receiving portion, and a processor, the light emitting portion is configured to emit a first light beam to the detection area, the light receiving portion is configured to receive a reflected light beam of the first light beam after being reflected by the detection area, and the processor is configured to determine the rotation amount of the knob relative to the knob holder according to the reflected light beam received by the light receiving portion. For example, the processor can be configured to determine the rotation amount of the knob relative to the knob holder according to the wavelength of the reflected light beam received by the light receiving portion. In this way, the rotation amount of the knob holder can be measured with high accuracy, and the knob will not be subjected to mechanical pressure or thermal effects, thereby avoiding damage to the knob.

[0018] In some embodiments of the first aspect, the adjusting device further includes an elastic positioning member and a connecting member; the elastic positioning member is connected with the knob holder, and the elastic positioning member is provided with a first positioning portion and a second positioning portion; the connecting member has a first connecting portion and a second connecting portion, the first connecting portion is in extrusion contact with the elastic positioning member, so that the elastic positioning member is elastically deformed away from the first connecting portion, and the second connecting portion is connected with the knob; when the knob moves between the insertion position and the extraction position, the knob can drive the connecting member to move relative to the elastic positioning member, so that the first connecting portion can be connected with the first positioning portion and the second positioning portion, the first connecting portion is connected with the first positioning portion, and the knob is positioned at the extraction position; the first connecting portion is connected with the second positioning portion, and the knob is positioned at the insertion position. In this way, the elastic positioning member can position the knob at the insertion position and the extraction position, respectively; at the same time, the friction between the elastic positioning member and the first connecting portion can provide a certain insertion and extraction damping force to the knob, thereby optimizing the hand feeling of the knob insertion and extraction operation.

[0019] In some embodiments of the first aspect, the first positioning portion is a positioning groove in which the first connecting portion can be inserted, and the positioning groove has a first groove side surface which is inclined relative to the axial direction of the knob; the second positioning portion is a corner portion formed by the junction of a first inclined surface and a second inclined surface on the elastic positioning member, and the first inclined surface and the second inclined surface are both inclined relative to the axial direction of the knob, and the first inclined surface is connected between the second inclined surface and the first groove side surface. In this way, the structure of the first positioning portion and the second positioning portion is relatively simple, and no other components need to be additionally provided on the elastic positioning member; in addition, the first groove side surface and the first inclined surface can guide the first connecting portion to the positions of the first positioning portion and the second positioning portion.

[0020] In some embodiments of the first aspect, the first groove side has a first inclination angle relative to the axial direction of the knob, the first inclined surface has a second inclination angle relative to the axial direction of the knob, and the second inclined surface has a third inclination angle relative to the axial direction of the knob, the first inclination angle and the third inclination angle are both smaller than the second inclination angle. In this way, the first groove side can better prevent the first connecting part from sliding out of the first positioning part, so that the knob can be more stably positioned in the pulled-out position; meanwhile, the pressing force between the first inclined surface and the first connecting part can be reduced, so that the damping force during the knob insertion and pulling operation can be reduced; the second inclined surface can better prevent the first connecting part from sliding out of the second positioning part, so that the knob can be more stably positioned in the inserted position.

[0021] In some embodiments of the first aspect, the depth direction of the first positioning part is parallel to the axial direction of the knob. In this way, the positioning effect of the first positioning part on the knob can be improved, and the damping force during the knob insertion and pulling operation can be avoided from being too large.

[0022] In some embodiments of the first aspect, the elastic positioning member is provided with a limiting protrusion, and the limiting protrusion is arranged at the side edge of the second inclined surface away from the first inclined surface. In this way, the limiting protrusion can limit the first connecting part, so as to avoid the first connecting part from sliding out of the second inclined surface, thereby limiting the pressing force of the knob on the key element.

[0023] In some embodiments of the first aspect, the connecting member is rotatably connected with the knob support through a rotating shaft, the rotating shaft is arranged between the first connecting part and the second connecting part, and the first connecting part is arranged on the side of the elastic positioning member close to the rotating shaft. In this way, the first connecting part can avoid occupying the space outside the elastic positioning member, so that the elastic positioning member and the rotating member are more compact.

[0024] In some embodiments of the first aspect, the connecting member is rotatably connected with the knob support through a rotating shaft, the rotating shaft is arranged between the first connecting part and the second connecting part, and the distance from the first connecting part to the rotating shaft is greater than the distance from the second connecting part to the rotating shaft. In this way, the connecting member forms a lever structure, which can amplify the axial movement distance of the knob, so that the elastic positioning member can be larger to better cooperate with the movement of the first connecting part.

[0025] In some embodiments of the first aspect, the knob is provided with a ring groove, the ring groove is arranged around the central axis of the knob and is used for the second connecting part to extend into. In this way, the connection structure between the connecting member and the knob can be relatively simple, without the need for additional connecting components, thereby facilitating the improvement of the connection reliability between the connecting member and the knob.

[0026] In some embodiments of the first aspect, the elastic positioning member comprises a support connecting portion and an elastic arm, the support connecting portion is fixedly connected with the knob support, one end of the elastic arm is connected with the support connecting portion, and the other end of the elastic arm is freely arranged, and the first positioning portion and the second positioning portion are both arranged on the elastic arm. In this way, the elastic arm is easy to elastically deform, which is conducive to reducing the extrusion force between the elastic arm and the first connecting portion, so that the plug-in and plug-out damping force of the knob can be reduced.

[0027] In some embodiments of the first aspect, the elastic arm comprises a first arm segment and a second arm segment, the first arm segment is connected between the support connecting portion and the second arm segment, the first positioning portion is arranged at a corner formed by the second arm segment and the first arm segment, and the second positioning portion is arranged on the second arm segment. In this way, the first connecting portion can be better prevented from sliding out of the first positioning portion, so that the knob can be more stably positioned at the plug-out position.

[0028] In some embodiments of the first aspect, the second arm segment is arranged to be inclined relative to the axial direction of the knob. In this way, the second arm segment is more easy to elastically deform, which is conducive to reducing the extrusion force between the second arm segment and the first connecting portion, so that the plug-in and plug-out damping force of the knob can be reduced.

[0029] In some embodiments of the first aspect, the edge of the lens movable support is provided with a frame protruding portion, the frame protruding portion extends out of the lens barrel through a through hole in the barrel wall of the lens barrel; a lens fixed support is further fixedly arranged in the lens barrel, the lens fixed support is used for mounting at least one lens in a lens set; the driving device comprises a motor and a transmission component, the transmission component is connected with the motor and the frame protruding portion respectively, and the motor drives the frame protruding portion to move along the axial direction of the lens barrel relative to the lens fixed support through the transmission component, so as to adjust the distance between the lens movable support and the lens fixed support. In this way, the structure of the driving device can be simplified, and the design and manufacturing cost of the driving device can be reduced.

[0030] In some embodiments of the first aspect, the transmission component comprises a gear and a rotating sleeve; the gear is connected with the output shaft of the motor, the rotating sleeve is rotatably sleeved on the outside of the lens barrel, the peripheral edge of the rotating sleeve is provided with a transmission tooth structure arranged in the circumferential direction of the rotating sleeve, and the transmission tooth structure is engaged with the gear; a guide portion is arranged on the inner wall of the rotating sleeve, the guide portion is arranged around the central axis of the rotating sleeve, one end of the guide portion is arranged close to the lens fixed support, the other end of the guide portion is arranged away from the lens fixed support, and the frame protruding portion is slidably connected with the guide portion. In this way, the structure between the transmission component and the lens barrel can be more compact, and the space occupied by the transmission component outside the lens barrel is reduced.

[0031] In some embodiments of the first aspect, the guide portion is a sliding groove, and the frame protrusion portion is in sliding fit with the sliding groove; the inner wall of the rotating sleeve is further provided with an assembly guide groove extending along the axial direction of the lens barrel, one end of the assembly guide groove is in communication with one end portion of the sliding groove, and the other end of the assembly guide groove penetrates through one end edge of the rotating sleeve. In this way, during assembly, the frame protrusion portion can slide into the guide portion from the assembly guide groove, thereby facilitating the assembly connection between the lens movable support and the rotating sleeve.

[0032] In the second aspect, the embodiments of the present application provide a head-mounted device, which comprises a shell and the lens module in the first aspect, the bearing support of the lens module is arranged in the shell, the knob support of the lens module is arranged on the bearing support or the shell, and the knob of the lens module protrudes out of the shell.

[0033] The head-mounted device in the embodiments of the present application has the same beneficial effects as the lens module in the first aspect, and thus will not be described herein again.

[0034] In some embodiments of the second aspect, the head-mounted device can be smart glasses, such as VR glasses.

[0035] In the third aspect, the embodiments of the present application provide a control method of a lens module, the lens module being used in a head-mounted device, the lens module comprising a bearing support, a lens barrel assembly, a driving device and an adjusting device; the lens barrel assembly is used for mounting a lens group, and comprises a lens barrel arranged on the bearing support and a lens movable support arranged in the lens barrel, the lens movable support being used for mounting at least one lens in the lens group; the driving device is used for driving at least one of the lens movable support and the lens barrel to move relative to the bearing support to perform a first function, the first function comprising pupil distance adjustment and / or focal length adjustment of the lens group; the adjusting device comprises a knob support and a knob arranged on the knob support, the knob being in rotatable connection with the knob support; the control method of the lens module comprises: detecting the rotation amount of the knob relative to the knob support; and controlling the driving device to perform the first function according to the rotation amount.

[0036] The control method of the lens module in the embodiments of the present application has the same beneficial effects as the lens module in the first aspect, and thus will not be described herein again.

[0037] In some embodiments of the third aspect, the knob is movably connected with the knob holder in the axial direction of the knob, so that the knob is movable relative to the knob holder between an inserted position and a pulled-out position; the height of the knob protruding from the knob holder in the pulled-out position is greater than the height of the knob protruding from the knob holder in the inserted position, and the knob is rotatable relative to the knob holder in both the inserted position and the pulled-out position; the control method of the lens module comprises: detecting a first parameter value; the first parameter value is used to reflect the position information of the knob relative to the knob holder in the axial direction of the knob; determining the position of the knob relative to the knob holder in the axial direction according to the size of the first parameter value; if the knob is located in one of the inserted position and the pulled-out position, controlling the driving device to perform a first function according to the rotation amount of the knob relative to the knob holder; if the knob is located in the other of the inserted position and the pulled-out position, controlling the head-mounted device to perform a second function according to the rotation amount of the knob relative to the knob holder. In this way, different operations of the knob are identified according to the first parameter value and the rotation amount of the knob, and then different functions of the head-mounted device can be controlled according to different operations, so that the same knob can control multiple functions of the head-mounted device through different operations.

[0038] In some embodiments of the third aspect, the outer wall of the knob has a detection area, the detection area includes first and second detection areas arranged in the axial direction of the knob and having different reflectivities; the adjustment device includes a light emitting portion and a light receiving portion, the light emitting portion is used to emit a first light beam toward the detection area, and the light receiving portion is used to receive a reflected light beam of the first light beam after being reflected by the detection area; when the knob is located in the inserted position, the light emitting portion is arranged toward the first detection area; when the knob is located in the pulled-out position, the light emitting portion is arranged toward the second detection area; detecting the first parameter value comprises: determining the first parameter value according to the reflected light beam received by the light receiving portion; the first parameter value includes at least one of the exposure time of the light receiving portion, the intensity value of the reflected light beam, and the brightness value of the reflected light beam. In this way, the axial position of the knob holder can be measured with high accuracy, and mechanical pressure or thermal effects on the knob can be avoided.

[0039] In some embodiments of the third aspect, the adjustment device further includes a button element arranged on the knob holder and opposite to the end surface of the knob, and the button element can be pressed by the knob; the control method of the lens module further comprises: controlling the head-mounted device to perform a third function when the button element is pressed by the knob. In this way, the knob can be rotated and pressed, so that the same knob can control multiple functions of the head-mounted device.

[0040] In some embodiments of the third aspect, the outer wall of the knob has a detection area, roughness of different regions of the detection area is different along the circumference of the knob, the sensor comprises a light emitting part and a light receiving part, the light emitting part is configured to emit a first light beam to the detection area, and the light receiving part is configured to receive a reflected light beam of the first light beam reflected by the detection area. The detecting the rotation amount of the knob relative to the knob holder comprises: determining the rotation amount of the knob relative to the knob holder according to the reflected light beam received by the light receiving part. In this way, the accuracy of the measured rotation amount of the knob holder can be higher, and the mechanical pressure or thermal effect on the knob can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 Structure diagram of a head-mounted device (VR glasses) in some embodiments of the present application;

[0042] Figure 2 Structure diagram of a head-mounted device in another view in some embodiments of the present application; Figure 1

[0043] Figure 3 Structure diagram of a head-mounted device after removing a front cover plate in some embodiments of the present application; Figure 2

[0044] Figure 4 Exploded view of a head-mounted device in some embodiments of the present application; Figure 3

[0045] Figure 5 Schematic diagram of a lens barrel assembly and a driving device arranged on a bearing bracket in some embodiments of the present application; Figure 3

[0046] Figure 6 Exploded view of a lens barrel assembly and a driving device connected thereto in some embodiments of the present application; Figure 5

[0047] Figure 7 B-B sectional view of some embodiments of the present application; Figure 5

[0048] Figure 8 C-C sectional view of some embodiments of the present application; Figure 5

[0049] Figure 9 Structure diagram of a lens barrel assembly shown in some embodiments of the present application; Figure 5

[0050] Figure 10 Structure diagram of a rotating sleeve shown in some embodiments of the present application; Figure 5

[0051] Figure 11a A-A sectional view of a head-mounted device in some embodiments of the present application; Figure 1

[0052] Figure 11b ​​​​​​​​​​for Figure 11a A schematic diagram of the knob's structure;

[0053] Figure 11c for Figure 11b Exploded view of the knob in the picture;

[0054] Figure 12 for Figure 1 A schematic diagram of the regulating device shown;

[0055] Figure 13 for Figure 12 A schematic diagram of the adjustment device shown from another perspective;

[0056] Figure 14 This is a hardware architecture diagram of the control system of the head-mounted device in some embodiments of this application;

[0057] Figure 15 for Figure 12 The diagram shows the state of the adjustment device switching between the insertion and withdrawal positions.

[0058] Figure 16 for Figure 12 Exploded view of the regulating device shown;

[0059] Figure 17 for Figure 12 The diagram shows the positional relationship between the detection area and the sensor when the adjustment device is in the insertion and withdrawal positions.

[0060] Figure 18 for Figure 12 A diagram showing the relationship between the knob and the elastic positioning element in the adjustment device when it is in the insertion and withdrawal positions.

[0061] Figure 19 for Figure 12 A schematic diagram of the elastic positioning component of the adjustment device in the middle;

[0062] Figure 20 This is a schematic diagram of the structure of the adjusting device in some embodiments of this application;

[0063] Figure 21 This is a schematic diagram of the structure of the adjusting device in some other embodiments of this application;

[0064] Figure 22 The following is a flowchart of the control method for the lens module in some embodiments of this application. Figure 1 ;

[0065] Figure 23 The following is a flowchart of the control method for the lens module in some embodiments of this application. Figure 2 . Detailed Implementation

[0066] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0067] With the development of electronic technology, head-mounted devices emerge as the times require. The head-mounted device refers to a kind of device worn on the head or in front of the eyes of a user, which can provide one or more functions, such as virtual reality, augmented reality, mixed reality, etc. Through these functions, the head-mounted device can provide an immersive and interactive experience for the user. Therefore, the head-mounted device is widely used in games, training, scientific research, design, military training, etc.

[0068] In order to meet the use requirements of users with different vision and interpupillary distance, the head-mounted device usually has function adjustment, such as myopia function adjustment and interpupillary distance function adjustment. The myopia function adjustment helps the user with myopia to use the head-mounted device comfortably without wearing traditional glasses. The interpupillary distance function adjustment ensures that the center of the lens of the head-mounted device accurately aligns with the pupil of the user when the user uses the head-mounted device, thereby providing a clearer and more comfortable visual experience. The function adjustment of the head-mounted device is realized by adjusting the structure. How to design the adjusting structure of the head-mounted device has become one of the important topics in the industry.

[0069] The adjusting structure of a head-mounted device in the related art mainly consists of a knob and a mechanical transmission mechanism. The knob is arranged on the shell of the head-mounted device and protrudes from the outer surface of the shell. The mechanical transmission mechanism is connected between the knob and the lens of the head-mounted device. When the head-mounted device needs function adjustment, such as myopia adjustment, the knob is rotated, and the mechanical transmission mechanism can change the position of a lens in the lens to adjust the focal length of the lens, thereby realizing the myopia adjustment of the head-mounted device.

[0070] However, the head-mounted device in the related art is limited by the adjustment accuracy. The mechanical transmission mechanism is designed to be relatively complex, and there are many transmission parts. The friction between the transmission parts is large. When adjusting, a large torque is required to rotate the knob, that is, the knob has a poor hand feeling, thereby making the function adjustment of the head-mounted device inconvenient.

[0071] Therefore, the embodiments of the present application provide a lens module and a control method thereof, and a head-mounted device. The function adjustment of the head-mounted device is realized by a motor and other driving devices. The knob and the driving device are signal connected. The rotation of the knob realizes the control of the driving device. In this way, the influence of the mechanical transmission mechanism on the rotation torque of the knob can be avoided, thereby optimizing the hand feeling of the knob and making the function adjustment of the head-mounted device more convenient.

[0072] The head-mounted device in this application embodiment can be a smart helmet or smart glasses, such as virtual reality (VR) glasses, augmented reality (AR) glasses, mixed reality (MR) glasses, etc.

[0073] The following uses VR glasses as an example to introduce the structure and principle of the adjustment structure in the head-mounted device of this application. Other types of head-mounted devices can be set up by referring to the adjustment structure in the VR glasses embodiment, which will not be described in detail here.

[0074] Figure 1 This is a schematic diagram of the structure of a head-mounted device (VR glasses) in some embodiments of this application. Figure 1 Only the main body of the head-mounted device is shown; other structural components (such as straps and goggles) are not included. Figure 2 As shown in the figure, Figure 1 for Figure 3 A schematic diagram of the head-mounted device from another perspective. Figure 2 for Figure 4 A schematic diagram of the head-mounted device after removing the front cover 300. Figure 3 for Figure 1 An exploded view of the head-mounted device.

[0075] like Figure 2 , Figure 3 and Figure 3 As shown, the head-mounted device includes a housing 200 and a lens module 100.

[0076] The housing 200 is a cuboid structure with an opening on one side. The housing 200 includes a rear end wall 210, and upper side walls 220a, lower side walls 220b, left side walls 220c, and right side walls 220d respectively disposed at the edge of the rear end wall 210. The upper side walls 220a and lower side walls 220b are spaced apart along the height direction Y of the housing 200, and the left side walls 220c and right side walls 220d are spaced apart along the width direction X of the housing 200. The height direction Y, width direction X, and depth direction H of the housing 200 are all perpendicular to each other.

[0077] Of course, the shell 200 is not limited to a cuboid structure; it can be set to other regular or irregular structures depending on the actual situation.

[0078] The lens module 100 includes a support bracket 1, a lens barrel assembly 2, a drive device 3, and an adjustment device 4. The support bracket 1, the lens barrel assembly 2, and the drive device 3 are all housed within the housing 200.

[0079] like Figure 4 and Figure 3As shown, the carrying bracket 1 is a plate structure, and the edges of the carrying bracket 1 are detachably connected with the shell 200. In some embodiments, as shown in Figure 4 and Figure 3 As shown, the edges of the carrying bracket 1 are provided with first connecting bosses 11, and the inner surface of the shell 200 is provided with second connecting bosses 230, and the first connecting bosses 11 are connected with the second connecting bosses 230 through fasteners (such as screws).

[0080] As shown in Figure 4 and Figure 3 As shown, the upper side wall 220a and the lower side wall 220b of the shell 200 are respectively provided with a plurality of second connecting bosses 230 arranged along the width direction X of the shell 200, and correspondingly, the edges of the corresponding sides of the carrying bracket 1 are provided with a plurality of first connecting bosses 11 arranged along the width direction X of the shell 200, and each first connecting boss 11 is connected with a corresponding second connecting boss 230 through a fastener. In this way, the connection between the carrying bracket 1 and the shell 200 can be made more firm by connecting the plurality of first connecting bosses 11 with the plurality of second connecting bosses 230.

[0081] Of course, the first connecting bosses 11 and the second connecting bosses 230 are not limited to being connected through fasteners, but can also be connected through clamping, bonding, or plugging to achieve detachable connection. The carrying bracket 1 is not limited to being a plate structure, but can also be provided with other structures according to actual conditions.

[0082] In some embodiments, as shown in Figure 4 and Figure 2 As shown, the lens barrel assembly 2 is arranged on the side of the carrying bracket 1 close to the opening of the shell 200, and the carrying bracket 1 is arranged apart from the rear end wall 210 of the shell 200. In this way, some devices can be arranged on the back side of the carrying bracket 1 (that is, the side close to the rear end wall 210), thereby improving the space utilization rate on the carrying bracket 1.

[0083] In some embodiments, as shown in Figure 3 and Figure 5 As shown, the shell 200 is further provided with a front cover plate 300, and the edges of the front cover plate 300 are connected with the shell 200. The carrying bracket 1 is arranged between the front cover plate 300 and the rear end wall 210, and the front cover plate 300 is provided with a relief hole 310 for part of the lens barrel assembly 2 to extend to the outside of the front cover plate 300. In this way, the front cover plate 300 serves to cover the carrying bracket 1 and the components thereon, thereby ensuring the appearance of the front side of the head-mounted device (the side facing the eyes of a person).

[0084] Figure 3 is a schematic view of the lens barrel assembly 2 and the driving device 3 arranged on the carrying bracket 1 in Figure 6 is a schematic view of the lens barrel assembly 2 and the driving device 3 arranged on the carrying bracket 1 in Figure 5 isFigure 7 An exploded view of the barrel assembly 2 and its connected driving device 3, Figure 5 is Figure 8 a B-B sectional view of the barrel assembly 2, Figure 5 is Figure 9 a C-C sectional view of the barrel assembly 2, Figure 5 is Figure 10 a structural schematic view of the barrel assembly 2 shown in FIG. 2, Figure 5 is Figure 5 a structural schematic view of the rotating sleeve 322 shown in FIG. 3.

[0085] As shown in Figure 6 , Figure 7 and Figure 6 , the barrel assembly 2 is used to mount the lens group 400, and includes a barrel 21 arranged on the carrying support 1, and a lens movable support 22 arranged in the barrel 21, the lens movable support 22 being used to mount at least one lens in the lens group 400. The driving device 3 is used to drive the lens movable support 22 to move relative to the carrying support 1 to perform a first function, the first function including focal length adjustment of the lens group 400.

[0086] The focal length adjustment of the lens group 400 can be achieved by adjusting the spacing between the lenses in the lens group 400, and in some embodiments, as shown in Figure 7 , Figure 8 and Figure 7 , a frame protrusion 221 is arranged at the edge of the lens movable support 22, the frame protrusion 221 extending out of the barrel 21 through a through hole 211 in the barrel wall of the barrel 21; a lens fixed support 23 is also fixedly arranged in the barrel 21, the lens fixed support 23 being used to mount at least one lens in the lens group 400.

[0087] The driving device 3 includes a motor 31 and a transmission component 32, the transmission component 32 being connected to the motor 31 and the frame protrusion 221 respectively, the motor 31 driving the frame protrusion 221 to move along the axial direction Z2 of the barrel 21 relative to the lens fixed support 23 through the transmission component 32, so as to adjust the spacing between the lens movable support 22 and the lens fixed support 23. The axial direction Z2 of the barrel 21 can be parallel to the depth direction H of the housing 200.

[0088] By adjusting the spacing between the lens movable support 22 and the lens fixed support 23 through the driving device 3, the spacing between the lenses in the lens group 400 can be adjusted, and the focal length adjustment of the lens group 400 can be achieved to adapt to users with different degrees of myopia. Compared with the scheme in which the driving device 3 drives the lens movable support 22 and the lens fixed support 23 to move simultaneously, in this embodiment, the driving device 3 only drives the lens movable support 22 to move, which is conducive to simplifying the structure of the driving device 3 and reducing the design and manufacturing costs of the driving device 3.

[0089] The configuration of the lens set 400 is not unique. In some embodiments, as shown in Figure 8 and Figure 6 , the lens set 400 includes two lenses, i.e., a first lens 400a and a second lens 400b. The first lens 400a is mounted on the lens movable holder 22, and the second lens 400b is mounted on the lens fixed holder 23. Of course, the lens set 400 is not limited to this. The lens set 400 can also include four or more lenses, and the lens movable holder 22 and the lens fixed holder 23 are each provided with a plurality of lenses.

[0090] As shown in Figure 7 and Figure 7 , the lens movable holder 22 is a circular frame structure, and the first lens 400a is mounted in the lens movable holder 22. However, the lens movable holder 22 can also be provided in other structures.

[0091] The positional relationship between the lens fixed holder 23 and the lens barrel 21 is not unique. In some embodiments, as shown in Figure 8 and Figure 5 , the lens fixed holder 23 can be an integral structure with the lens barrel 21. For example, the lens fixed holder 23 can be an annular flange provided on the inner wall of the lens barrel 21, and the second lens 400b is bonded to the lens fixed holder 23.

[0092] In other embodiments, the lens fixed holder 23 can also be provided separately from the lens barrel 21.

[0093] In some embodiments, as shown in Figure 6 and Figure 5 , the lens barrel assembly 2 further includes a motor holder 26, which is fixedly connected to the lens barrel 21. The motor holder 26 is provided with a motor mounting groove 261 for mounting the motor 31. In this way, the motor mounting groove 261 can limit the motor 31, so that the motor 31 is more firmly mounted.

[0094] The structure of the transmission component 32 is not unique. In some embodiments, as shown in Figure 6 , Figure 7 and Figure 6 , the transmission component 32 includes a gear 321 and a rotating sleeve 322. The gear 321 is connected to the output shaft of the motor 31, and the rotating sleeve 322 is rotatably sleeved on the outside of the lens barrel 21. The rotating sleeve 322 has a transmission tooth structure 3221 arranged circumferentially on the periphery of the rotating sleeve 322, and the transmission tooth structure 3221 is engaged with the gear 321.

[0095] As shown in Figure 8 , Figure 10 and Figure 10As shown, the inner wall of the rotating sleeve 322 is provided with a guide portion 3222, which is arranged around the central axis of the rotating sleeve 322, and one end (for example, the left end in Figure 10 ) of the guide portion 3222 is arranged close to the lens fixing support 23, and the other end (for example, the right end in Figure 10 ) of the guide portion 3222 is arranged away from the lens fixing support 23, that is, the guide portion 3222 is arranged obliquely when the rotating sleeve 322 is unfolded, for example, as shown in Figure 6 The distance S2 from the left end of the guide portion 3222 to the bottom end of the rotating sleeve 322 is greater than the distance S1 from the right end of the guide portion 3222 to the bottom end of the rotating sleeve 322; and the frame protruding portion 221 is in sliding connection with the guide portion 3222.

[0096] When the driving device 3 is working, the motor 31 drives the rotating sleeve 321 to rotate relative to the lens barrel 21 through the gear 321, and when the rotating sleeve 321 rotates, the frame protruding portion 221 slides relative to the guide portion 3222. Since the guide portion 3222 is obliquely arranged, the frame protruding portion 221 can be driven to move along the axial direction Z2 of the lens barrel 21 under the guidance of the guide portion 3222, so as to adjust the focal length of the lens group 400.

[0097] By arranging the transmission component 32 to include the gear 321 and the rotating sleeve 322, and arranging the rotating sleeve 322 to be rotatably arranged on the lens barrel 21, the structure between the transmission component 32 and the lens barrel 21 can be more compact, and the space occupied by the transmission component 32 outside the lens barrel 21 is reduced.

[0098] The structure of the guide portion 3222 is not unique, in some embodiments, Figure 7 , Figure 10 and Figure 10 As shown, the guide portion 3222 is a sliding groove, and the frame protruding portion 221 is in sliding fit with the sliding groove. In this way, the guide portion 3222 does not additionally occupy the space in the rotating sleeve 322, and the guide portion 3222 avoids pressing the space of the lens barrel 21 in the rotating sleeve 322, so that the matching structure between the rotating sleeve 321 and the lens barrel 21 is more compact.

[0099] As shown in Figure 5 , the inner wall of the rotating sleeve 322 is further provided with an assembly guide groove 3223, which extends along the axial direction Z2 of the lens barrel 21, and one end of the assembly guide groove 3223 is in communication with one end of the sliding groove, and the other end of the assembly guide groove 3223 penetrates through one end edge of the rotating sleeve 322. In this way, during assembly, the frame protruding portion 221 can be slid into the guide portion 3222 from the assembly guide groove 3223, so as to facilitate the assembly connection between the lens movable support 22 and the rotating sleeve 322.

[0100] In addition to the sliding groove, in other embodiments, the guide portion 3222 can also be a guide rail protruding from the inner wall of the rotating sleeve 322.

[0101] In order to reduce the movement of the rotating sleeve 322 in the axial direction Z2 of the lens barrel 21, as shown in Figure 6 and Figure 6 , a support wall 25 is arranged at the edge of the bottom end (close to the end of the bearing support 1) of the lens barrel 21, the support wall 25 extends in the radial direction of the lens barrel 21, and the rotating sleeve 322 is arranged on the support wall 25. In this way, the support wall 25 can limit the movement of the rotating sleeve 322 in the axial direction Z2 of the lens barrel 21.

[0102] In order to make the driving device 3 drive the lens movable support 22 to move smoothly, as shown in Figure 7 and Figure 6 , the number of lens frame protrusions 221 can be set to be multiple, such as three, and the multiple lens frame protrusions 221 are arranged in the circumferential direction of the lens movable support 22. Correspondingly, a plurality of through holes 211, such as three, are arranged on the barrel wall of the lens barrel 21, and the number of guide portions 3222 on the inner wall of the rotating sleeve 322 is set to be multiple. Each lens frame protrusion 221 extends out of the lens barrel 21 through the corresponding through hole 211 and is in sliding connection with the corresponding guide portion 3222. In this way, when the driving device 3 drives the lens movable support 22 to move, the lens movable support 22 can be uniformly stressed in the circumferential direction, so that the lens movable support 22 moves smoothly and avoids being deflected.

[0103] In order to make the driving device 3 drive the lens movable support 22 to move more smoothly, as shown in Figure 8 , Figure 9 and Figure 3 , the through hole 211 is a racetrack hole, the length direction of the through hole 211 is parallel to the axial direction Z2 of the lens barrel 21, and the lens frame protrusion 221 is in sliding fit with the through hole 211. In this way, the through hole 211 can guide the lens frame protrusion 221, avoid the lens frame protrusion 221 from shaking in the through hole 211, so that the lens frame protrusion 221 moves more smoothly in the through hole 211, and the lens movable support 22 moves more smoothly.

[0104] In addition to the structure including the gear 321 and the rotating sleeve 322, the transmission component 32 in the embodiments of the present application can also be a gear and rack mechanism. The rack of the gear and rack mechanism extends in the axial direction Z2 of the lens barrel 21 and is fixedly connected with the lens frame protrusion 221. The gear of the gear and rack mechanism is in meshing connection with the rack, and the output shaft of the motor 31 is perpendicular to the axial direction Z2 of the lens barrel 21.

[0105] In some embodiments, asFigure 4 、 Figure 5 and Figure 5 As shown in

[0106] The sliding connection structure 6 includes a sliding shaft support 61 arranged on the carrying support 1, a sliding shaft 62 arranged on the sliding shaft support 61, and a sliding seat 63 fixedly connected to the lens barrel 21. The sliding shaft 62 extends along the width direction X of the shell 200, and the sliding seat 63 is in sliding cooperation with the sliding shaft 62. In this way, the lens barrel 21 can be moved along the width direction X of the shell 200 by pulling the lens barrel 21, so that the interpupillary distance of the head-mounted device can be adjusted.

[0107] In order to improve the interpupillary distance adjustment accuracy of the head-mounted device, as shown in Figure 4 A damping rubber is arranged in the sliding hole of the sliding seat 63, and the sliding hole is used for sliding cooperation with the sliding shaft 62. By arranging the damping rubber in the sliding hole of the sliding seat 63, the damping feeling of the movement of the lens barrel 21 along the width direction X of the shell 200 can be increased when the lens barrel 21 is adjusted by pulling, so that the additional movement of the lens barrel 21 is reduced, the position accuracy of the lens barrel 21 is improved, and the interpupillary distance adjustment accuracy of the head-mounted device is improved.

[0108] In order to make the movement of the lens barrel 21 along the width direction X of the shell 200 more stable, as shown in Figure 5 and Figure 4 The number of sliding seats 63 can be multiple, such as two. The multiple sliding seats 63 are arranged along the width direction X of the shell 200, and each sliding seat 63 is in sliding cooperation with the sliding shaft 13.

[0109] In order to make the movement of the lens barrel 21 along the width direction X of the shell 200 more stable, as shown in Figure 5 and Figure 11a The sliding connection structure 6 is arranged in two groups, and the two groups of sliding connection structures 6 are arranged at the two side edges of the lens barrel 21 along the height direction Y of the shell 200.

[0110] In the embodiments of the present application, in addition to adjusting the pupil distance by the barrel 21, the pupil distance can also be adjusted by the driving device 3, that is, the first function can include pupil distance adjustment, and the driving device 3 drives the barrel assembly 2 to move along the width direction X of the housing 200 to adjust the pupil distance of the head-mounted device. The driving device 3 can include a driving motor and a screw nut mechanism, the driving motor is connected with a screw rod of the screw nut mechanism, the screw rod extends along the width direction X of the housing 200, and a nut of the screw nut mechanism is fixedly connected with the barrel 21. When the driving motor works, the barrel 21 is driven by the screw nut mechanism to move along the width direction X of the housing 200, so as to realize the pupil distance adjustment of the head-mounted device.

[0111] Figure 1 FIG. 4 is a schematic structural view of the adjustment device 4 shown in FIG. 1, Figure 12 FIG. 5 is a schematic structural view of the head-mounted device shown in FIG. 1 in A-A section view, Figure 1 FIG. 6 is a schematic structural view of the adjustment device 4 shown in FIG. 1, Figure 13 FIG. 7 is a schematic structural view of the adjustment device 4 shown in FIG. 1 in another view, Figure 12 FIG. 8 is a hardware architecture diagram of the control system of the head-mounted device in some embodiments of the present application. Figure 14 Figure 11a As shown in FIGS. 9, 10 and 11, the adjustment device 4 includes a knob bracket 41, a knob 42 and a sensor 43 arranged on the knob bracket 41, the knob bracket 41 is arranged on the housing 200, the knob 42 is rotatably connected with the knob bracket 41, and the knob 42 protrudes out of the housing 200; and the sensor 43 is used for detecting the rotation amount of the knob 42 relative to the knob bracket 41.

[0112] Figure 12 As shown in FIG. 12, Figure 13 the knob 42 includes a knob rod 421 and a rotating part 422 connected at one end of the knob rod 421, the rotating part 422 protrudes out of the housing 200, and the knob rod 421 extends into the housing 200 and is rotatably connected with the knob bracket 41. Figure 11a In some embodiments, as shown in FIGS. 13, 14 and 15,

[0113] the knob 42 includes a knob rod 421 and a rotating part 422 connected at one end of the knob rod 421, the rotating part 422 protrudes out of the housing 200, and the knob rod 421 extends into the housing 200 and is rotatably connected with the knob bracket 41. Figure 11a As shown in FIG. 16,

[0114] the rotating part 422 includes an outer knob cap 4221 and an inner knob cap 4222. Figure 11b Figure 11c As shown in FIG. 17, Figure 11b the rotating part 422 includes an outer knob cap 4221 and an inner knob cap 4222. Figure 11a Figure 11c As shown in FIG. 18, Figure 11b the rotating part 422 includes an outer knob cap 4221 and an inner knob cap 4222. Figure 11b As shown in FIG. 19,

[0115] the rotating part 422 includes an outer knob cap 4221 and an inner knob cap 4222.​​The outer knob cap 4221 is a plastic member and is sleeved on the outside of the inner knob cap 4222, the inner knob cap 4222 is a metal member or an alloy member, the knob rod 421 is a metal member or an alloy member, the outer knob cap 4221 is connected with the inner knob cap 4222 through the buckle structure 426, so that the outer knob cap 4221 and the inner knob cap 4222 are relatively fixed in the circumferential direction of the knob 42, and the end of the knob rod 421 is fixedly connected with the inner knob cap 4222.

[0116] By connecting the inner knob cap 4222 and the knob rod 421 which are both metal members or alloy members, the connection between the rotating part 422 and the knob rod 421 can be more firm, and the knob rod 421 can be prevented from being deflected.

[0117] As shown in Figure 11c and Figure 11a , the buckle structure 426 includes a protruding rib 4261 arranged on the inner knob cap 4222 and a clamping groove 4262 arranged on the outer knob cap 4221, and the protruding rib 4261 is clamped with the clamping groove 4262. Of course, the positions of the protruding rib 4261 and the clamping groove 4262 can also be mutually adjusted, that is, the protruding rib 4261 is arranged on the outer knob cap 4221, and the clamping groove 4262 is arranged on the inner knob cap 4222.

[0118] In some embodiments, as shown in Figure 11c , Figure 11a , the inner knob cap 4222 is fixedly connected with the end of the knob rod 421 through a fastener such as a screw, and specifically, a plug hole is arranged on the top wall of the inner knob cap 4222 for inserting the knob rod 421, a threaded hole is arranged on the end of the knob rod 421, and the fastener is connected with the threaded hole of the end of the knob rod 421 through the top wall of the inner knob cap 4222.

[0119] Among them, the end of the knob rod 421 close to the inner knob cap 4222 can be a prism such as a quadrangular prism, and the plug hole on the top wall of the inner knob cap 4222 can be a polygonal hole matched with the prism.

[0120] In some embodiments, as shown in Figure 11b , Figure 11c and Figure 11a , the adjusting device 4 further includes a mounting sleeve 424 fixedly arranged on the shell 200, the knob rod 421 is rotatably matched with the mounting sleeve 424, and the knob rod 421 extends into the shell 200 through the mounting sleeve 424 and is rotatably connected with the knob support 41. In this way, the mounting sleeve 424 can isolate the knob rod 421 from the shell 200, so that the rotation of the knob rod 421 does not cause abrasion to the shell 200.

[0121] Among them, as shown in Figure 11aAs shown, a portion of the mounting sleeve 424 extends into the inner knob cap 4222, and a gap is formed between the mounting sleeve 424 and the inner peripheral wall of the inner knob cap 4222, so that the inner knob cap 4222 can rotate normally relative to the mounting sleeve 424.

[0122] In some embodiments, as shown in Figure 12 and Figure 1 As shown, the knob mounting groove 412 is provided on the knob holder 41, extends along the axial direction Z1 of the knob 42, and penetrates the surfaces on the opposite sides of the knob holder 41 along the groove depth direction S of the knob mounting groove 412. The knob rod 421 passes through one end groove side wall of the knob mounting groove 412 and extends into the knob mounting groove 412, and the sensor 43 is at least partially arranged opposite to the knob mounting groove 412.

[0123] As shown in Figure 3 , Figure 12 , Figure 4 The axial direction Z1 of the knob 42 can be parallel to the height direction Y of the housing 200, the groove depth direction S of the knob mounting groove 412 can be parallel to the depth direction H of the housing 200, and the groove width direction L of the knob mounting groove 412 can be parallel to the width direction X of the housing 200.

[0124] In order to facilitate the replacement of the adjustment device 4, in some embodiments, as shown in Figure 11a and Figure 14 The knob holder 41 is detachably connected to the housing 200 by fasteners (such as screws). For example, the inner side of the upper side wall 220a is provided with a threaded column, and the knob holder 41 has a connecting lug 411 which is threadedly connected to the threaded column by a fastener.

[0125] In addition to being arranged on the housing 200, the knob holder 41 can also be arranged on the carrier holder 1.

[0126] As shown in Figure 14 The lens module 100 further comprises a controller 5 electrically connected to the driving device 3 and the sensor 43, respectively. The controller 5 is configured to control the driving device 3 to perform a first function according to the amount of rotation of the knob 42 relative to the knob holder 41. The first function includes at least one of the interpupillary distance adjustment of the head-mounted device and the focal length adjustment of the lens group 400. It should be understood that the driving device 3 performs the first function can be synchronized with the rotation operation of the knob 42, or can be performed after the rotation operation of the knob 42, which is not limited here.

[0127] As shown in Figure 3As shown in FIG. 1, in the case that the driving device 3 comprises the motor 31, the controller 5 is electrically connected with the driving chip 33 of the motor 31, and the controller 5 can send a control instruction to the driving chip 33 according to the rotation amount of the knob 42 relative to the knob support 41, so as to control the driving chip 33 to control the driving device 3 to perform the first function. The controller 5 can be a SOC (System on Chip), but is not limited thereto, and the controller 5 can also be a CPU (Central Processing Unit), an MCU (Micro Control Unit), an ASIC (Application Specific Integrated Circuit), etc. As shown in FIG. 1, the controller 5 can be arranged on the bearing support 1. In order to avoid the controller 5 from occupying the installation space of the lens barrel assembly 2 on the bearing support 1, the controller 5 can be arranged on the side of the bearing support 1 away from the lens barrel assembly 2. Figure 4 and Figure 3 As shown in FIG. 1, the controller 5 can be arranged on the bearing support 1. In order to avoid the controller 5 from occupying the installation space of the lens barrel assembly 2 on the bearing support 1, the controller 5 can be arranged on the side of the bearing support 1 away from the lens barrel assembly 2.

[0128] In the head-mounted device in the embodiments of the present application, the controller 5 is electrically connected with the driving device 3 and the sensor 43 of the adjusting device 4 respectively, so that when the function adjustment of the head-mounted device is needed, the knob 42 is rotated, and the controller 5 can control the driving device 3 to perform the first function according to the rotation amount of the knob 42 detected by the sensor 43, so as to realize the function adjustment of the head-mounted device. Since the knob 42 is signal-connected with the driving device 3, the knob 42 is not connected with the mechanical transmission mechanism, so that the influence of the mechanical transmission mechanism on the rotation torque of the knob 42 can be avoided, and thus the damping force of the knob 42 during rotation can be optimized according to the actual needs of the user, so that the rotation feeling of the knob 42 is better, thereby facilitating the user to perform the function adjustment of the head-mounted device.

[0129] In some embodiments, as shown in Figure 4 , Figure 14 and Figure 12 The number of the lens barrel assemblies 2 is two, each of the lens barrel assemblies 2 is connected with the driving device 3, and the number of the adjusting devices 4 is also two, and the sensors 43 of the two adjusting devices 4 are connected with the controller 5. When the knob 42 of one of the adjusting devices 4 is rotated, the controller 5 can control the corresponding driving device 3 to perform the first function according to the rotation amount of the knob 42 relative to the knob support 41.

[0130] For example, when the left knob 42 is rotated, the controller 5 can control the left driving device 3 to perform the first function according to the rotation amount of the left knob 42 relative to the knob support 41; and when the right knob 42 is rotated, the controller 5 can control the right driving device 3 to perform the first function according to the rotation amount of the right knob 42 relative to the knob support 41.

[0131] In order to enable the knob 42 to control multiple functions of the head-mounted device, in some embodiments, as shown in Figure 13 , Figure 15 and Figure 15As shown, Figure 12 For Figure 15 The state diagram of the adjusting device 4 switching between the insertion position and the pull-out position. Along the axial direction Z1 of the knob 42, the knob 42 is movably connected with the knob support 41, so that the knob 42 can move between the insertion position (as shown in (a) of Figure 15 ) and the pull-out position (as shown in (b) of Figure 12 ).

[0132] The height h2 of the knob 42 protruding from the knob support 41 in the pull-out position is greater than the height h1 of the knob 42 protruding from the knob support 41 in the insertion position, and the knob 42 can rotate relative to the knob support 41 in both the insertion position and the pull-out position. The sensor 43 is also used to detect a first parameter value, which is used to reflect the position information of the knob 42 relative to the knob support 41 in the axial direction Z1 of the knob 42.

[0133] In this way, the operation function of the knob 42 can be enriched, and the user can perform various operations through the knob 42, such as the insertion and pull-out operation of the knob 42, the rotation operation of the knob 42 in the insertion position, the rotation operation of the knob 42 in the pull-out position, etc. The controller 5 can identify different operations of the knob 42 according to the first parameter value and the rotation amount detected by the sensor 43, and then control the head-mounted device to perform different functions according to different operations, thereby realizing the control of various functions of the head-mounted device by the same knob 42 and improving the operation experience of the user on the head-mounted device.

[0134] In some embodiments, as shown in Figure 13 , Figure 14 and Figure 14 , the controller 5 is configured to: determine the position of the knob 42 relative to the knob support 41 in the axial direction Z1 according to the size of the first parameter value; if the knob 42 is located in the insertion position, the controller 5 controls the driving device 3 to perform the first function according to the rotation amount of the knob 42 in the insertion position; and if the knob 42 is located in the pull-out position, the controller 5 controls the head-mounted device to perform the second function according to the rotation amount of the knob 42 in the pull-out position.

[0135] Alternatively, if the knob 42 is located in the insertion position, the controller 5 controls the head-mounted device to perform the second function according to the rotation amount of the knob 42 in the insertion position; and if the knob 42 is located in the pull-out position, the controller 5 controls the driving device 3 to perform the first function according to the rotation amount of the knob 42 in the pull-out position.

[0136] With this setup, users can perform two operations using the knob 42: rotation when the knob 42 is in the insertion position and rotation when the knob 42 is in the removal position. The controller 5 identifies the different operations of the knob 42 based on the first parameter value of the knob 42 and the amount of rotation. Thus, it can control the head-mounted device to perform different functions based on different operations, thereby realizing the control of multiple functions of the head-mounted device by the same knob 42 through different operations.

[0137] The second function could be volume adjustment for the head-mounted device, such as... Figure 14 As shown, controller 5 is electrically connected to speaker 600 of the head-mounted device. When knob 42 is in the pulled-out position and is rotated, controller 5 controls the volume of speaker 600 according to the amount of rotation of knob 42. The second function can also be video fast-forward / rewind adjustment, such as... Figure 16 As shown, the controller 5 is electrically connected to the display screen 500 of the head-mounted device. When the knob 42 is in the pulled-out position and is rotated, the controller 5 controls the display screen 500 to fast forward and rewind the video being played based on the amount of rotation of the knob 42. For example, turning the knob 42 in one direction performs fast forward adjustment, and turning it in the opposite direction performs rewind adjustment. In some embodiments, the display screen 500 may be disposed inside the lens barrel 21 and located on the side of the lens group 400 near the support space 1.

[0138] In some embodiments, such as Figure 17 and Figure 16 As shown, Figure 12 for Figure 17 The exploded view of the regulating device 4 shown. Figure 12 for Figure 14 The diagram shows the positional relationship between the detection area 420a and the sensor 43 of the adjustment device 4 in the insertion and withdrawal positions. The outer wall of the knob 42 has a detection area 420a, which includes a first detection area 420b and a second detection area 420c arranged along the axial direction Z1 of the knob 42. The reflectivity of the first detection area 420b is different from that of the second detection area 420c.

[0139] like Figure 16 , Figure 17 and Figure 17 As shown, sensor 43 is a photoelectric sensor and includes a light emitter 431, a light receiver 432, and a processor 433. The light emitter 431 is used to emit a first light beam into the detection area 420a. Figure 17 As shown in reference numeral a), the light receiving unit 432 is used to receive the reflected beam of the first light beam after it has been reflected by the detection area 420a, and the processor 433 is used to determine the first parameter value based on the reflected beam received by the light receiving unit 432.

[0140] likeFigure 17 As shown in (a), when knob 42 is in the insertion position, light emitting part 431 is positioned towards the first detection area 420b; as Figure 16 As shown in (b), when the knob 42 is in the pulled-out position, the light emitting part 431 is positioned toward the second detection area 420c.

[0141] The first parameter value can be the exposure time of the light receiver 432. Specifically, the exposure time of the light receiver 432 refers to the time required for the sensor 43 to generate an image of the reflective area (the area where the reflected beam is reflected) of the detection area 420a after the light receiver 432 receives the reflected beam. The exposure time of the light receiver 432 is inversely proportional to the light intensity of the reflected beam. The higher the reflectivity of the detection area 420a, the higher the intensity of the reflected beam, and the shorter the exposure time of the light receiver 432; conversely, the lower the reflectivity of the detection area 420a, the lower the intensity of the reflected beam, and the longer the exposure time of the light receiver 432. Therefore, by measuring the value of the first parameter detected by the sensor 43, the reflectivity of the detection area 420a corresponding to the light emitting part 431 of the sensor 43 can be determined, and thus the axial position of the knob 42 relative to the knob bracket 41 can be determined.

[0142] Of course, the first parameter value is not limited to the exposure time of the light receiving unit 432. The first parameter value can also be the intensity value of the reflected beam, the brightness value of the reflected beam, etc.

[0143] In this embodiment, the sensor 43 determines the axial position of the knob 42 relative to the knob bracket 41 by detecting the first parameter value corresponding to the reflected beam of the detection area 420a. This not only ensures high accuracy in measuring the axial position of the knob bracket 41, but also avoids mechanical pressure or thermal effects on the knob 42, thereby preventing damage to the knob 42.

[0144] The configuration of the detection area 420a is not unique; in some embodiments, such as... Figure 17 As shown, the knob lever 421 is a metal lever or an alloy lever. The peripheral wall of the knob lever 421 has a polished area and a non-polished area. The roughness of the polished area is less than that of the non-polished area. The polished area is the first detection area 420b, and the non-polished area is the second detection area 420c.

[0145] In this embodiment, the first detection area 420b and the second detection area 420c are formed by forming areas with different roughness on the knob rod 421. This makes the structure of the knob rod 421 simple and eliminates the need to apply other coatings to the knob rod 421, thus facilitating the manufacturing of the knob rod 421.

[0146] In addition to the polished area being the first detection area 420b and the non-polished area being the second detection area 420c, the polished area and the non-polished area can also be mutually reversed, that is, the polished area is the second detection area 420c and the non-polished area is the first detection area 420b.

[0147] In other embodiments, a portion of the circumferential wall of the knob rod 421 is covered with a reflective layer, and another portion of the circumferential wall of the knob rod 421 is covered with a light-absorbing layer, the reflective layer being the first detection area 420b and the light-absorbing layer being the second detection area 420c.

[0148] In this embodiment, the first detection area 420b and the second detection area 420c are formed by covering the knob rod 421 with a light-absorbing layer and a reflective layer, so that the material of the knob rod 421 is less restricted, and the knob rod 421 can not only be a metal rod or an alloy rod, but also a non-metal rod, such as a plastic rod.

[0149] In addition to the reflective layer being the first detection area 420b and the light-absorbing layer being the second detection area 420c, the reflective layer and the light-absorbing layer can also be reversed, that is, the light-absorbing layer is the first detection area 420b and the reflective layer is the second detection area 420c.

[0150] In some embodiments, as shown in Figure 16 and Figure 17 , the roughness of different areas of the detection area 420a along the circumference of the knob 42 is different. The processor 433 of the sensor 43 is configured to determine the amount of rotation of the knob 42 relative to the knob holder 41 according to the reflected light beam received by the light receiving portion 432.

[0151] Since the roughness of different areas of the detection area 420a along the circumference of the knob 42 is different, the degree of reflection of light by different areas of the detection area 420a is also different. When the first light beam is reflected by different circumferential areas of the detection area 420a, the reflected light beam received by the light receiving portion 432 of the sensor 43 also differs, such as the wavelengths of the reflected light beams of different areas of the detection area 420a being different. In this way, the processor 433 of the sensor 43 can determine the reflection area of the detection area 420a and further determine the amount of rotation of the knob 42 according to the wavelength of the reflected light beam received by the light receiving portion 432.

[0152] In this embodiment, the sensor 43 determines the amount of rotation of the knob 42 according to the reflected light beam of the detection area 420a, so that the accuracy of the measured amount of rotation of the knob holder 41 is higher, and mechanical pressure or thermal effects are not generated on the knob 42, thereby avoiding damage to the knob 42.

[0153] In some embodiments, as shown in Figure 12 and Figure 13As shown, the roughness of the first detection area 420b, the second detection area 420c and the different areas along the circumference of the knob 42 are different.

[0154] The sensor 43 in the embodiment of the present application is not limited to an optical sensor. The sensor 43 can also include a rotary encoder and a position sensor, both of which are electrically connected to the controller 5. The rotary encoder is used to detect the rotation amount of the knob 42, and the position sensor is used to detect the position of the knob 42 relative to the knob support 41.

[0155] In some embodiments, as shown in Figure 11a and Figure 12 The adjustment device 4 further includes a button element 44, which is arranged on the knob support 41 and opposite to the end surface of the knob 42. The button element 44 can be pressed by the knob 42. In this way, the operation function of the knob 42 can be enriched. The knob 42 can be rotated and pressed, so that the same knob 42 can control multiple functions of the head-mounted device, and the user's operation experience of the head-mounted device is improved.

[0156] As shown in Figure 12 and Figure 13 The button element 44 is arranged in the knob mounting groove 412 and on the groove side wall away from the rotating part 422 of the knob 42. The knob button element 44 can be a thin film button such as a DOME button, or a light touch switch, which is not limited here.

[0157] In some embodiments, as shown in Figure 14 , Figure 12 and Figure 16 The controller 5 is electrically connected to the button element 44; and the controller 5 is configured to control the head-mounted device to perform a third function when the button element 44 is pressed by the knob 42. In this way, the controller 5 can detect the rotation amount of the knob 42 and the pressing of the button element 44 by the sensor 43 to identify the rotation operation and the pressing operation of the knob 42, so as to control the head-mounted device to perform multiple functions according to the rotation operation and the pressing operation of the knob 42.

[0158] The third function can be the pause / play function of the display screen 500 playing a video, or other functions, which are not limited here.

[0159] Of course, the button element 44 can also be directly connected to the display screen 500 through a control line, so that when the knob 42 is pressed, the pressing signal of the button element 44 is directly transmitted to the display screen 500 to control the pause / play function of the video playing.

[0160] In order to stably position the knob 42 in the insertion position and the pull-out position, and optimize the feel of the knob 42 insertion and pull-out operation, in some embodiments, as shown in Figure 18 and Figure 19 , the adjusting device 4 further comprises an elastic positioning member 45 and a connecting member 46; the elastic positioning member 45 is connected with the knob support 41, and the elastic positioning member 45 is provided with a first positioning portion 451 and a second positioning portion 452; the connecting member 46 has a first connecting portion 461 and a second connecting portion 462, the first connecting portion 461 is in extrusion contact with the elastic positioning member 45, so that the elastic positioning member 45 is elastically deformed to the side away from the first connecting portion 461, and the second connecting portion 462 is connected with the knob 42.

[0161] As shown in Figure 18 and Figure 12 , Figure 19 is a relationship diagram of the knob 42 and the elastic positioning member 45 of the adjusting device 4 in the insertion position and the pull-out position in Figure 12 , Figure 18 is a structure diagram of the elastic positioning member 45 of the adjusting device 4 in Figure 18 . When the knob 42 moves between the insertion position and the pull-out position, the knob 42 can drive the connecting member 46 to move relative to the elastic positioning member 45, so that the first connecting portion 461 can be connected with the first positioning portion 451 and the second positioning portion 452, as shown in Figure 12 (a) of Figure 16 , when the first connecting portion 461 is connected with the first positioning portion 451, the knob 42 is positioned in the pull-out position; as shown in (b) of

[0162] , when the first connecting portion 461 is connected with the second positioning portion 452, the knob 42 is positioned in the insertion position.

[0163] By setting the elastic positioning member 45, and the knob 42 can be connected with the first positioning portion 451 and the second positioning portion 452 of the elastic positioning member 45 through the connecting member 46, so that the elastic positioning member 45 can position the knob 42 in the insertion position and the pull-out position respectively, avoiding the knob 42 from moving under the action of external force when positioned in the insertion position and the pull-out position. At the same time, since the first connecting portion 461 is in extrusion contact with the elastic positioning member 45, and the elastic positioning member 45 is elastically deformed to the side away from the first connecting portion 461, when the knob 42 moves between the insertion position and the pull-out position, the friction between the elastic positioning member 45 and the first connecting portion 461 can provide a certain insertion and pull-out damping force to the knob 42, so as to optimize the feel of the knob 42 insertion and pull-out operation, and facilitate the user to perform the insertion and pull-out operation of the knob 42. Figure 18 Figure 19 Figure 12 Figure 16 ​​The first arrangement embodiment of the connecting piece 46 is shown, in which the connecting piece 46 is rotatably connected with the knob support 41 through the rotating shaft 47, the rotating shaft 47 is arranged between the first connecting part 461 and the second connecting part 462; the first connecting part 461 is arranged on the side of the elastic positioning piece 45 close to the rotating shaft 47; correspondingly, the first positioning part 451 and the second positioning part 452 are also located on the side of the elastic positioning piece 45 close to the rotating shaft 47. In this way, the first connecting part 461 can avoid occupying the space on the outer side (i.e. the side away from the rotating shaft 47) of the elastic positioning piece 45, so that the elastic positioning piece 45 and the rotating piece 46 are more compact.

[0164] In some embodiments, the distance from the first connecting part 461 to the rotating shaft 47 is greater than the distance from the second connecting part 462 to the rotating shaft 47. In this way, the connecting piece 46 forms a lever structure, which can amplify the axial movement distance of the knob 42, i.e. the second connecting part 462 moves a smaller distance with the movement of the knob 42, and the first connecting part 461 moves a larger distance, so that the elastic positioning piece 45 can be larger to better cooperate with the movement of the first connecting part 461.

[0165] In some embodiments, as shown in Figure 12 and Figure 16 , the knob 42 is provided with a ring groove 423, which is arranged around the central axis of the knob 42 and is used for the second connecting part 462 to extend into. The ring groove 423 can be arranged on the knob rod 421. By arranging the ring groove 423 on the knob 42 for the second connecting part 462 to extend into, the rotation of the knob 42 is not affected, and the connecting piece 46 can be driven to move relative to the elastic positioning piece 45 when the knob 42 moves in the axial direction Z1; at the same time, the connecting structure between the connecting piece 46 and the knob 42 is relatively simple, and no additional connecting components are needed, thereby facilitating the connection reliability between the connecting piece 46 and the knob 42.

[0166] Of course, the connecting structure between the connecting piece 46 and the knob 42 is not limited to the above, for example, the knob 42 (such as the knob rod 421) can be rotatably sleeved with a connecting sleeve, and the connecting sleeve is relatively fixed with the knob 42 in the axial direction Z1 of the knob 42, and the connecting sleeve is hinged with the second connecting part 462. In this way, the rotation of the knob 42 is not affected, and the connecting piece 46 can be driven to move relative to the elastic positioning piece 45 when the knob 42 moves in the axial direction Z1.

[0167] In some embodiments, as shown in Figure 16 and Figure 18As shown, the rotating member 46 comprises a rotating member body 460, which is a sheet structure, and a first connecting portion 461 and a second connecting portion 462, which are connecting protrusions protruding from the surface of the rotating member body 460. The connecting protrusions can be columnar, spherical, or the like, which is not limited herein.

[0168] In some embodiments, as shown in Figure 19 , Figure 19 and Figure 12 , Figure 19 is a structural schematic view of the elastic positioning member 45 of the adjusting device 4 in Figure 19 . The first positioning portion 451 is a positioning groove into which the first connecting portion 461 extends, and the positioning groove has a first groove side surface 4511 that is obliquely arranged relative to the axial direction Z1 of the knob 42. The second positioning portion 452 is a corner portion formed by the intersection of a first inclined surface 453 and a second inclined surface 454 on the elastic positioning member 45, and the first inclined surface 453 and the second inclined surface 454 are both obliquely arranged relative to the axial direction Z1 of the knob 42, and the first inclined surface 453 is connected between the second inclined surface 454 and the first groove side surface 4511. By arranging the first positioning portion 451 as a positioning groove and the second positioning portion 452 as a corner portion formed by the intersection of inclined surfaces, the structure of the first positioning portion 451 and the second positioning portion 452 is relatively simple, and no other components need to be additionally arranged on the elastic positioning member 45, which is conducive to reducing the manufacturing cost of the elastic positioning member 45. In addition, the first groove side surface 4511 and the first inclined surface 453 are both obliquely arranged relative to the axial direction Z1 of the knob 42, so that the first groove side surface 4511 and the first inclined surface 453 serve as guides for the first connecting portion 461, which facilitates guiding the first connecting portion 461 to the positions of the first positioning portion 451 and the second positioning portion 452.

[0169] In some embodiments, as shown in Figure 18 , the positioning groove can be a V-shaped groove, but is not limited thereto, and the positioning groove can also be a trapezoidal groove.

[0170] In some embodiments, as shown in Figure 18 , the first groove side surface 4511 has a first inclination angle θ1 relative to the axial direction Z1 of the knob 42, the first inclined surface 453 has a second inclination angle θ2 relative to the axial direction Z1 of the knob 42, and the second inclined surface 454 has a third inclination angle θ3 relative to the axial direction Z1 of the knob 42, and the first inclination angle θ1 and the third inclination angle θ3 are both smaller than the second inclination angle θ2.

[0171] Since the first inclination angle θ1 is smaller than the second inclination angle θ2, that is, the first groove side surface 4511 is relatively steep and the first inclined surface 453 is relatively gentle, as shown in Figure 18As shown in (b) of FIG. 4A, when the first connecting portion 461 extends into the first positioning portion 451, the first groove side surface 4511 can better prevent the first connecting portion 461 from sliding out of the first positioning portion 451, so that the knob 42 can be more stably positioned at the pulled-out position.

[0172] Meanwhile, the first inclined surface 453 is arranged to be relatively flat, so that, as shown in (a) of FIG. 4A, when the first connecting portion 461 extends into the first positioning portion 451, the first inclined surface 453 can better prevent the first connecting portion 461 from sliding out of the first positioning portion 451, so that the knob 42 can be more stably positioned at the pulled-out position. Figure 18 Figure 18 As shown in (b) of FIG. 4A, when the first connecting portion 461 extends into the first positioning portion 451, the first groove side surface 4511 can better prevent the first connecting portion 461 from sliding out of the first positioning portion 451, so that the knob 42 can be more stably positioned at the pulled-out position.

[0173] Since the third inclination angle θ1 is smaller than the second inclination angle θ2, that is, the second inclined surface 454 is steeper than the first inclined surface 453, so that, as shown in (a) of FIG. 4B, when the first connecting portion 461 extends into the second positioning portion 452, the second inclined surface 454 can better prevent the first connecting portion 461 from sliding out of the second positioning portion 452, so that the knob 42 can be more stably positioned at the inserted position. Figure 19 In some embodiments, as shown in (a) of FIG. 4A and (a) of FIG. 4B, the depth direction of the first positioning portion 451 is parallel to the axial direction Z1 of the knob 42. In this way, the positioning effect of the first positioning portion 451 on the knob 42 can be improved, and the damping force during the plug-in and pull-out operation of the knob 42 can be avoided from being too large.

[0174] Figure 18 In some embodiments, as shown in (a) of FIG. 4A and (a) of FIG. 4B, the depth direction of the first positioning portion 451 is parallel to the axial direction Z1 of the knob 42. In this way, the positioning effect of the first positioning portion 451 on the knob 42 can be improved, and the damping force during the plug-in and pull-out operation of the knob 42 can be avoided from being too large. Figure 19 In some embodiments, as shown in (a) of FIG. 4A and (a) of FIG. 4B, the depth direction of the first positioning portion 451 is parallel to the axial direction Z1 of the knob 42. In this way, the positioning effect of the first positioning portion 451 on the knob 42 can be improved, and the damping force during the plug-in and pull-out operation of the knob 42 can be avoided from being too large.

[0175] Figure 12 In some embodiments, as shown in (a) of FIG. 4A and (a) of FIG. 4B, the depth direction of the first positioning portion 451 is parallel to the axial direction Z1 of the knob 42. In this way, the positioning effect of the first positioning portion 451 on the knob 42 can be improved, and the damping force during the plug-in and pull-out operation of the knob 42 can be avoided from being too large. Figure 18

[0176] ​​​​Of course, the first positioning part 451 and the second positioning part 452 are not limited to the structure described above, and the first positioning part 451 and the second positioning part 452 can each be a magnetic attraction member, such as a magnet, provided on the elastic positioning member 45, and the first connecting part 461 of the connecting member 46 is made of a magnetic material, so that the first connecting part 461 can be attracted to the first positioning part 451 and the second positioning part 452.

[0177] In some embodiments, the elastic positioning member 45 can be provided in a spring arm structure, as shown in Figure 19 、 Figure 12 and Figure 18 , the elastic positioning member 45 includes a bracket connecting part 456 and an elastic arm 457, the bracket connecting part 456 is fixedly connected to the knob bracket 41, one end of the elastic arm 457 is connected to the bracket connecting part 456, and the other end of the elastic arm 457 is freely provided, and the first positioning part 451 and the second positioning part 452 are each provided on the elastic arm 457.

[0178] By providing the elastic arm 457 in a cantilever structure, the elastic arm 457 has good elasticity, and when the knob 42 is inserted or pulled out and the first connecting part 461 moves relative to the elastic arm 457, the elastic arm 457 is easily elastically deformed, which is beneficial to reduce the extrusion force between the elastic arm 457 and the first connecting part 461, thereby reducing the insertion and pulling out damping force of the knob 42, and further ensuring a good insertion and pulling out hand feeling of the knob 42. At the same time, by providing the elastic positioning member 45 in a structure including the bracket connecting part 456 and the elastic arm 457, no additional spring is needed, which is beneficial to simplify the structure of the elastic positioning member 45.

[0179] In some embodiments, as shown in Figure 19 、 Figure 12 and Figure 18 , the elastic arm 457 includes a first arm segment 4571 and a second arm segment 4572, the first arm segment 4571 is connected between the bracket connecting part 456 and the second arm segment 4572, the first positioning part 451 is provided at a corner formed by the second arm segment 4572 and the first arm segment 4571, and the second positioning part 452 is provided on the second arm segment 4572.

[0180] By providing the first positioning part 451 at the corner formed by the second arm segment 4572 and the first arm segment 4571, the first connecting part 461 can be better prevented from sliding out of the first positioning part 451, thereby more stably positioning the knob 42 at the pulled out position.

[0181] In some embodiments, as shown in Figure 19 、 Figure 12 and Figure 12As shown, the second arm segment 4572 is inclined relative to the knob 42 along the axial direction Z1. With this arrangement, the second arm segment 4572 is more likely to undergo elastic deformation, which helps to reduce the compressive force between the second arm segment 4572 and the first connecting part 461, thereby reducing the insertion and removal damping force of the knob 42 and ensuring a better insertion and removal feel for the knob 42.

[0182] In some embodiments, such as Figure 12 As shown, the bracket connecting part 456 is fixedly connected to the first side of the knob mounting slot 412 (e.g., Figure 12 On the knob bracket 41 (shown on the left), the first arm segment 4571 extends toward the second side of the knob mounting slot 412 (e.g., on the left side). Figure 12 (As shown on the right) the second arm segment 4572 is located on the second side of the knob mounting slot 412.

[0183] Among them, such as Figure 20 As shown, the bracket connecting part 456 is fixedly connected to the knob bracket 41 by fasteners, but it is not limited to this. The bracket connecting part 456 can also be fixedly connected to the knob bracket 41 by snap-fit, adhesive or other means.

[0184] In some embodiments, such as Figure 20 As shown, the extension direction of the first arm segment 4571 is parallel to the groove width direction L of the knob mounting groove 412.

[0185] Of course, in addition to being configured as a spring arm structure, the elastic positioning member 45 can also be configured as a structure containing a spring, as described below: The elastic positioning member 45 includes a positioning member body and a spring. The positioning member body is a block structure and is located at one edge of the knob mounting groove 412. The first connecting part 461 is located on the side of the positioning member body close to the knob mounting groove 412. The spring is located on the side of the positioning member body away from the knob mounting groove 412 and is used to apply an elastic force to the positioning member body so that the positioning member body and the first connecting part 461 are pressed into contact.

[0186] Figure 20 A second embodiment of the connection 46 is shown. The main difference between the second embodiment and the first embodiment is that the first connecting part 461 is located on the side of the elastic positioning member 45 near the rotating shaft 47. Correspondingly, the first positioning part 451 and the second positioning part 452 are also located on the side of the elastic positioning member 45 away from the rotating shaft 47.

[0187] In some embodiments, such as Figure 20As shown, the connecting piece 46 comprises a rotating piece body 460, which is a rod-shaped structure, and a first connecting part 461 and a second connecting part 462, which are connecting protrusions protruding from the surface of the rotating piece body 460. The connecting protrusions can be columnar, spherical, or the like, which is not specifically limited here.

[0188] In some embodiments, as shown in FIG. 1, the first connecting part 461 and the second connecting part 462 are connected to the rotating knob 42 and the rotating knob support 41, respectively. Figure 20 As shown, the elastic positioning piece 45 comprises a support connecting part 456 and an elastic arm 457. The support connecting part 456 is fixedly connected to the rotating knob support 41, one end of the elastic arm 457 is connected to the support connecting part 456, and the other end of the elastic arm 457 is freely arranged. The first positioning part 451 and the second positioning part 452 are both arranged on the elastic arm 457.

[0189] In some embodiments, as shown in FIG. 1, the first connecting part 461 and the second connecting part 462 are connected to the rotating knob 42 and the rotating knob support 41, respectively. Figure 20 As shown, the elastic arm 457 comprises a first arm segment 4571 and a second arm segment 4572. The first arm segment 4571 is connected between the support connecting part 456 and the second arm segment 4572. The first positioning part 451 is arranged at the corner formed by the second arm segment 4572 and the first arm segment 4571, and the second positioning part 452 is arranged on the second arm segment 4572.

[0190] In some embodiments, as shown in FIG. 1, the first connecting part 461 and the second connecting part 462 are connected to the rotating knob 42 and the rotating knob support 41, respectively. Figure 21 As shown, the first arm segment 4571 comprises a first segment 4571a, a second segment 4571b, a third segment 4571c, and a fourth segment 4571d connected in sequence. The first segment 4571a is connected to the support connecting part 456, and the fourth segment 4571d is connected to the second arm segment 4572. The first segment 4571a and the third segment 4571c both extend along the axial direction Z1 of the rotating knob 42, the second segment 4571b and the fourth segment 4571d extend in a direction perpendicular to the axial direction Z1 of the rotating knob 42, and the fourth segment 4571d extends towards the side of the rotating knob 42 (as shown on the left side in FIG. 1). Figure 21

[0191] As for the structures and connection relationships of other components in this embodiment, such as the structure of the rotating knob 42, the rotating knob support 41, the first positioning part 451, and the second positioning part 452, they can be arranged according to the structures in the first arrangement mode embodiment of the connecting piece 46, which will not be described here.

[0192] Figure 21 A third arrangement mode embodiment of the connecting piece 46 is shown. The main difference between the third arrangement mode embodiment and the second arrangement mode embodiment of the connecting piece 46 is that the connection structure of the second connecting part 462 of the connecting piece 46 and the rotating knob 42 is different, which is described as follows.

[0193] As shown in FIG. 1, the second connecting part 462 of the connecting piece 46 is connected to the rotating knob 42. Figure 21 ​As shown, the second connecting part 462 of the connecting piece 46 is fixedly connected with the knob 42; wherein, the connecting piece 46 can be a rod-shaped structure, the connecting piece 46 extends along a direction L perpendicular to the axial direction Z1 of the knob 42, the second connecting part 462 is one end of the connecting piece 46, and the first connecting part 461 is arranged at the other end of the connecting piece 46 and is in extrusion contact with the elastic positioning piece 45.

[0194] In some embodiments, as shown in Figure 21 The first connecting part 461 can be a connecting protrusion, which can be columnar, cylindrical, spherical, etc., without specific limitation here.

[0195] In some embodiments, as shown in Figure 21 The elastic positioning piece 45 includes a bracket connecting part 456 and an elastic arm 457, the bracket connecting part 456 is fixedly connected with the knob bracket 41, one end of the elastic arm 457 is connected with the bracket connecting part 456, and the other end of the elastic arm 457 is freely arranged, and the first positioning part 451 and the second positioning part 452 are both arranged on the elastic arm 457.

[0196] As shown in Figure 21 The elastic arm 457 includes a first arm segment 4571 and a second arm segment 4572, the first arm segment 4571 is connected between the bracket connecting part 456 and the second arm segment 4572, the first positioning part 451 and the second positioning part 452 are both arranged on the second arm segment 4572, and the first positioning part 451 is arranged at the free end of the second arm segment 4572.

[0197] In some embodiments, as shown in Figure 2 The first positioning part 451 is a positioning groove for the first connecting part 461 to extend into, the positioning groove has a first groove side surface 4511, and the first groove side surface 4511 is arranged obliquely relative to the axial direction Z1 of the knob 42. The second positioning part 452 is a corner part formed by the first inclined surface 453 and the second inclined surface 454 on the elastic positioning piece 45, the first inclined surface 453 and the second inclined surface 454 are both arranged obliquely relative to the axial direction Z1 of the knob 42, and the first inclined surface 453 is connected between the second inclined surface 454 and the first groove side surface 4511.

[0198] As shown in Figure 3 The depth direction of the first positioning part 451 is perpendicular to the axial direction Z1 of the knob 42.

[0199] As for the structures and connection relationships of other components in this embodiment, such as the structures of the knob 42 and the knob bracket 41, they can be arranged by referring to the structures in the second arrangement mode embodiment of the connecting piece 46, which will not be described here again.

[0200] The embodiments of the present application also provide a control method of the lens module 100, the lens module 100 is used for a head-mounted device, such as Figure 11a and Figure 12 The lens module 100 includes a bearing support 1, a lens barrel assembly 2, a driving device 3, and an adjusting device 4.

[0201] The lens barrel assembly 2 is used for mounting a lens group 400, and includes a lens barrel 21 arranged on the bearing support 1, and a lens movable support 22 arranged in the lens barrel 21, the lens movable support 22 is used for mounting at least one lens in the lens group 400. The driving device 3 is used for driving at least one of the lens movable support 22 and the lens barrel 21 to move relative to the bearing support 1 to perform a first function, the first function includes pupil distance adjustment and / or focal length adjustment of the lens group 400. As shown in Figure 22 and Figure 22 The adjusting device 4 includes a knob support 41, and a knob 42 arranged on the knob support 41, the knob 42 is rotatably connected with the knob support 41.

[0202] As shown in Figure 1 , Figure 15 The control method of the lens module 100 in some embodiments of the present application Figure 23 The control method of the lens module 100 includes:

[0203] S310, detecting a rotation amount of the knob 42 relative to the knob support 41.

[0204] S320, controlling the driving device 3 to perform the first function according to the rotation amount of the knob 42. Wherein, the driving device 3 performing the first function can be synchronized with the rotation operation of the knob 42, or can be performed after the rotation operation of the knob 42, which is not limited here.

[0205] In this way, the knob 42 is connected with the mechanical transmission mechanism, so that the influence of the mechanical transmission mechanism on the rotation torque of the knob 42 can be avoided, and thus the damping force of the knob 42 during rotation can be optimized according to the actual needs of the user, so that the rotation feeling of the knob 42 is better, thereby facilitating the user to adjust the function of the head-mounted device.

[0206] In some embodiments, as shown in Figure 23 Along the axial direction Z1 of the knob 42, the knob 42 is movably connected with the knob support 41, so that the knob 42 can move relative to the knob support 41 between an inserted position and a pulled-out position; the height of the knob 42 protruding from the knob support 41 in the inserted position is greater than the height of the knob 42 protruding from the knob support 41 in the pulled-out position, and the knob 42 can rotate relative to the knob support 41 in both the inserted position and the pulled-out position.

[0207] As shown in Figure 2 ,Figure 17 A control method of the lens module 100 in some embodiments of the present application Figure 12 The control method of the lens module 100 comprises:

[0208] S100, detecting a first parameter value; wherein the first parameter value is used to reflect the position information of the knob 42 relative to the knob support 41 in the axial direction Z1 of the knob 42.

[0209] S200, determining the position of the knob 42 relative to the knob support 41 in the axial direction according to the size of the first parameter value;

[0210] If the knob 42 is located in the insertion position, sequentially execute steps S310 and S320;

[0211] If the knob 42 is located in the pull-out position, sequentially execute steps S410 and S420;

[0212] S410, detecting the rotation amount of the knob 42 relative to the knob support 41.

[0213] S420, controlling the head-mounted device to execute a second function according to the rotation amount of the knob 42.

[0214] In this way, the user can perform two operations through the knob 42, i.e. the rotation operation of the knob 42 in the insertion position and the rotation operation of the knob 42 in the pull-out position, and the different operations of the knob 42 are identified according to the first parameter value and the rotation amount of the knob 42, so that different functions of the head-mounted device can be controlled according to different operations, thereby realizing the control of multiple functions of the head-mounted device through different operations of the same knob 42.

[0215] In some embodiments, as shown in Figure 16 The outer wall of the knob 42 has a detection area 420a, and the reflectivity of different areas of the detection area 420a is different along the axial direction Z1 of the knob 42; the adjusting device 4 comprises a light emitting portion 431 and a light receiving portion 432, the light emitting portion 431 is used to emit a first light beam to the detection area 420a, and the light receiving portion 432 is used to receive a reflected light beam after the first light beam is reflected by the detection area 420a;

[0216] S100 comprises: determining the first parameter value according to the reflected light beam received by the light receiving portion 432.

[0217] The first parameter value comprises at least one of the exposure time of the light receiving portion 432, the intensity value of the reflected light beam, and the brightness value of the reflected light beam.

[0218] In this way, the axial position of the knob support 41 can be measured with high accuracy, and mechanical pressure or thermal effect on the knob 42 can be avoided.

[0219] In some embodiments, as shown in Figure 12 and ​ The outer wall of the knob 42 has a detection area 420a, the roughness of different areas of the detection area 420a is different along the circumference of the knob 42, the sensor 43 includes a light emitting part 431 and a light receiving part 432, the light emitting part 431 is used to emit a first light beam to the detection area 420a, and the light receiving part 432 is used to receive a reflected light beam after the first light beam is reflected by the detection area 420a.

[0220] The amount of rotation of the knob 42 relative to the knob holder 41 is determined according to the reflected light beam received by the light receiving part 432.

[0221] In this way, the accuracy of the measured amount of rotation of the knob holder 41 is high, and no mechanical pressure or thermal effect is generated on the knob 42.

[0222] In some embodiments, as shown in ​ The adjustment device 4 further includes a button element 44, the button element 44 is arranged on the knob holder 41 and opposite to the end face of the knob 42, and the button element 44 can be pressed by the knob 42. The control method of the lens module 100 further includes:

[0223] In the case that the button element 44 is pressed by the knob 42, the head-mounted device is controlled to perform a third function.

[0224] In this way, the knob 42 can not only be rotated, but also be pressed, so that the same knob 42 can control multiple functions of the head-mounted device.

[0225] The same or similar features as those in the above product embodiment of the lens module 100 appear in this control method embodiment of the lens module 100, and the specific description can be referred to in the above product embodiment of the lens module 100, which will not be repeated here.

[0226] The type of section line in the drawings of the present application is to distinguish different components and should not be understood as a limitation on the material of the components. The drawings of the present application are to show the structural composition and are not shown in the actual product proportion.

[0227] Although the description of the application will be introduced in combination with some embodiments, it does not mean that the features of the application are limited to the implementation. On the contrary, the purpose of introducing the embodiments in the application is to cover other options or modifications that can be extended based on the claims of the application. In order to provide a deep understanding of the application, many specific details will be included in the above description. The application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the application, some specific details will be omitted in the description. It should be noted that the embodiments and features in the embodiments in the application can be combined with each other without conflict.

[0228] In the embodiments of the application, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0229] In the embodiments of the application, "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0230] In the description of the embodiments of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, "connecting" can be detachably connected, or can be non-detachably connected; can be directly connected, or indirectly connected through an intermediate medium. The orientation language mentioned in the embodiments of the application, such as "up", "down", "left", "right", "inner", "outer" and the like, is only the direction of the drawing, therefore, the orientation language used is to better, more clearly illustrate and understand the embodiments of the application, and is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the application. "Multiple" means at least two.

[0231] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0232] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A lens module for use in a head-mounted device, characterized in that, include: Support bracket (1); Lens tube assembly (2) for mounting lens group (400), and includes lens tube (21) disposed on the support bracket (1), and lens movable bracket (22) disposed in the lens tube (21), the lens movable bracket (22) for mounting at least one lens in the lens group (400); A drive device (3) is used to drive at least one of the lens movable support (22) and the lens barrel (21) to move relative to the support support (1) to perform a first function, the first function including interpupillary distance adjustment and / or focal length adjustment of the lens group (400); The adjustment device (4) includes a knob bracket (41), a knob (42) and a sensor (43) disposed on the knob bracket (41). The knob (42) is rotatably connected to the knob bracket (41), and the sensor (43) is used to detect the amount of rotation of the knob (42) relative to the knob bracket (41). The controller (5) is electrically connected to the drive device (3) and the sensor (43) respectively. The controller (5) is used to control the drive device (3) to perform the first function according to the amount of rotation of the knob (42) relative to the knob bracket (41).

2. The lens (2) module according to claim 1, characterized in that, Along the axial direction (Z1) of the knob (42), the knob (42) is movably connected to the knob bracket (41) so that the knob (42) can move between an inserted position and a pulled-out position. The knob (42) protrudes from the knob bracket (41) at a greater height than it protrudes from the knob bracket (41) at the inserted position. The knob (42) can rotate relative to the knob bracket (41) in both the inserted position and the pulled-out position. The sensor (43) is also used to detect a first parameter value, which is used to reflect the position information of the knob (42) relative to the knob bracket (41) in the axial direction (Z1) of the knob (42).

3. The lens (2) module according to claim 2, characterized in that, The outer wall of the knob (42) has a detection area (420a), which includes a first detection area (420b) and a second detection area (420c) arranged along the axial direction (Z1) of the knob (42) and having different reflectivities. The sensor (43) includes a light emitting unit (431), a light receiving unit (432), and a processor (433). The light emitting unit (431) is used to emit a first light beam into the detection area (420a). The light receiving unit (432) is used to receive the reflected light beam after the first light beam is reflected by the detection area (420a). The processor (433) is used to determine a first parameter value based on the reflected light beam received by the light receiving unit (432). The first parameter value includes at least one of the exposure time of the light receiving unit (432), the intensity value of the reflected light beam, and the brightness value of the reflected light beam. When the knob (42) is in the insertion position, the light emitting part (431) is positioned toward the first detection area (420b); when the knob (42) is in the withdrawal position, the light emitting part (431) is positioned toward the second detection area (420c).

4. The lens module according to claim 3, characterized in that, The knob (42) includes a knob rod (421) and a rotating part (422) connected to one end of the knob rod (421); the knob rod (421) is a metal rod or an alloy rod, and the peripheral wall of the knob rod (421) has a polished area and a non-polished area, the roughness of the polished area is less than the roughness of the non-polished area, one of the polished area and the non-polished area is the first detection area (420b), and the other of the polished area and the non-polished area is the second detection area (420c).

5. The lens module according to claim 3, characterized in that, The knob (42) includes a knob rod (421) and a rotating part (422) connected to one end of the knob rod (421); a portion of the peripheral wall of the knob rod (421) is covered with a reflective layer, and another portion of the peripheral wall of the knob rod (421) is covered with a light-absorbing layer. One of the reflective layer and the light-absorbing layer is the first detection area (420b), and the other of the reflective layer and the light-absorbing layer is the second detection area (420c).

6. The lens module according to any one of claims 2 to 5, characterized in that, The controller (5) is used to: determine the position of the knob (42) relative to the knob bracket (41) in the axial direction (Z1) of the knob (42) according to the magnitude of the first parameter value; If the knob (42) is in either the insertion position or the withdrawal position, the controller (5) controls the drive device (3) to perform the first function based on the amount of rotation of the knob (42) relative to the knob bracket (41); If the knob (42) is in either the insertion position or the withdrawal position, the controller (5) controls the head-mounted device to perform a second function based on the amount of rotation of the knob (42) relative to the knob bracket (41).

7. The lens module according to any one of claims 2 to 6, characterized in that, The adjustment device (4) further includes an elastic positioning member (45) and a connecting member (46); the elastic positioning member (45) is connected to the knob bracket (41), and the elastic positioning member (45) is provided with a first positioning part (451) and a second positioning part (452); the connecting member (46) has a first connecting part (461) and a second connecting part (462), the first connecting part (461) is pressed against the elastic positioning member (45) to cause the elastic positioning member (45) to elastically deform to the side away from the first connecting part (461), and the second connecting part (462) is connected to the knob (42); When the knob (42) moves between the insertion position and the withdrawal position, the knob (42) can drive the connector (46) to move relative to the elastic positioning member (45), so that the first connecting part (461) can be connected with the first positioning part (451) and the second positioning part (452). When the first connecting part (461) is connected with the first positioning part (451), the knob (42) is positioned in the withdrawal position; when the first connecting part (461) is connected with the second positioning part (452), the knob (42) is positioned in the insertion position.

8. The lens module according to claim 7, characterized in that, The first positioning part (451) is a positioning groove into which the first connecting part (461) can extend. The positioning groove has a first groove side (4511), which is inclined relative to the axis (Z1) of the knob (42). The second positioning part (452) is a corner formed by the first inclined surface (453) and the second inclined surface (454) on the elastic positioning member (45). The first inclined surface (453) and the second inclined surface (454) are both inclined relative to the axis (Z1) of the knob (42). The first inclined surface (453) is connected between the second inclined surface (454) and the first groove side surface (4511).

9. The lens module according to claim 8, characterized in that, The first groove side surface (4511) is inclined at a first angle θ1 relative to the axis (Z1) of the knob (42), the first inclined surface (453) is inclined at a second angle θ2 relative to the axis (Z1) of the knob (42), and the second inclined surface (454) is inclined at a third angle θ3 relative to the axis (Z1) of the knob (42). The first angle θ1 and the third angle θ3 are both smaller than the second angle θ2.

10. The lens module according to claim 8 or 9, characterized in that, The depth direction of the first positioning part (451) is parallel to the axial direction (Z1) of the knob (42), and / or, the elastic positioning member (45) is provided with a limiting protrusion (455), which is located on the side edge of the second inclined surface (454) away from the first inclined surface (453).

11. The lens module according to any one of claims 7 to 10, characterized in that, The connector (46) is rotatably connected to the knob bracket (41) via a pivot (47), and the pivot (47) is disposed between the first connecting part (461) and the second connecting part (462); The first connecting part (461) is disposed on the side of the elastic positioning member (45) near the rotating shaft (47), and / or the distance from the first connecting part (461) to the rotating shaft (47) is greater than the distance from the second connecting part (462) to the rotating shaft (47).

12. The lens module according to claim 11, characterized in that, The knob (42) is provided with an annular groove (423), which is arranged around the central axis of the knob (42) and into which the second connecting part (462) extends.

13. The lens module according to any one of claims 7 to 12, characterized in that, The elastic positioning component (45) includes a bracket connecting part (456) and an elastic arm (457). The bracket connecting part (456) is fixedly connected to the knob bracket (41). One end of the elastic arm (457) is connected to the bracket connecting part (456), and the other end of the elastic arm (457) is freely disposed. The first positioning part (451) and the second positioning part (452) are both disposed on the elastic arm (457).

14. The lens module according to claim 13, characterized in that, The elastic arm (457) includes a first arm segment (4571) and a second arm segment (4572). The first arm segment (4571) is connected between the bracket connecting part (456) and the second arm segment (4572). The first positioning part (451) is disposed at the corner formed by the second arm segment (4572) and the first arm segment (4571). The second positioning part (452) is disposed on the second arm segment (4572).

15. The lens module according to any one of claims 1 to 14, characterized in that, The adjustment device (4) further includes a button element (44), which is disposed on the knob bracket (41) and is disposed opposite to the end face of the knob (42). The button element (44) can be pressed by the knob (42).

16. The lens module according to claim 15, characterized in that, The controller (5) is electrically connected to the button element (44); the controller (5) is used to control the head-mounted device to perform a third function when the button element (44) is pressed by the knob (42).

17. The lens module according to any one of claims 1 to 16, characterized in that, The outer wall of the knob (42) has a detection area (420a). The roughness of different areas of the detection area (420a) is different along the circumference of the knob (42). The sensor (43) includes a light emitting part (431), a light receiving part (432), and a processor (433). The light emitting part (431) is used to emit a first light beam to the detection area (420a). The light receiving part (432) is used to receive the reflected light beam after the first light beam is reflected by the detection area (420a). The processor (433) is used to determine the amount of rotation of the knob (42) relative to the knob support (41) based on the reflected light beam received by the light receiving part (432).

18. The lens module according to any one of claims 1 to 17, characterized in that, The lens movable support (22) is provided with a frame protrusion (221) at the edge, and the frame protrusion (221) extends out of the lens barrel (21) through a through hole (211) on the barrel wall of the lens barrel (21); a lens fixing bracket (23) is also fixedly provided inside the lens barrel (21), and the lens fixing bracket (23) is used to install at least one lens in the lens group (400); The driving device (3) includes a motor (31) and a transmission component (32). The transmission component (32) is connected to the motor (31) and the frame protrusion (221) respectively. The motor (31) drives the frame protrusion (221) to move relative to the lens fixing bracket (23) along the axial direction (Z2) of the lens barrel (21) through the transmission component (32) so as to adjust the distance between the lens movable bracket (22) and the lens fixing bracket (23).

19. The lens module according to claim 18, characterized in that, The transmission component (32) includes a gear (321) and a rotating sleeve (322); The gear (321) is connected to the output shaft of the motor (31), and the rotating sleeve (322) is rotatably sleeved on the outside of the lens barrel (21). The peripheral edge of the rotating sleeve (322) has a transmission gear structure (3221) arranged circumferentially along the rotating sleeve (322), and the transmission gear structure (3221) meshes with the gear (321). The inner wall of the rotating sleeve (322) is provided with a guide portion (3222), the guide portion (3222) is arranged around the central axis of the rotating sleeve (322), one end of the guide portion (3222) is arranged close to the lens fixing bracket (23), and the other end of the guide portion (3222) is arranged away from the lens fixing bracket (23). The frame protrusion (221) is slidably connected to the guide portion (3222).

20. The lens module according to claim 19, characterized in that, The guide part (3222) is a sliding groove, and the frame protrusion (221) slides in cooperation with the sliding groove; The inner wall of the rotating sleeve (322) is also provided with an assembly guide groove (3223). The assembly guide groove (3223) extends along the axial direction (Z2) of the lens barrel (21), and one end of the assembly guide groove (3223) is connected to one end of the slide groove. The other end of the assembly guide groove (3223) passes through one edge of the rotating sleeve (322).

21. A head-mounted device, characterized in that, include: Casing (200); The lens module (100) according to any one of claims 1 to 20, wherein the support bracket (1) of the lens module (100) is disposed inside the housing (200), the knob bracket (41) of the lens module (100) is disposed on the support bracket (1) or on the housing (200), and the knob (42) of the lens module (100) protrudes outside the housing (200).

22. A control method for a lens module, characterized in that, The lens module is used in a head-mounted device, and the lens module (100) includes a support bracket (1), a lens barrel assembly (2), a drive device (3), and an adjustment device (4); The lens barrel assembly (2) is used to install the lens group (400), and includes a lens barrel (21) disposed on the support bracket (1), and a lens movable bracket (22) disposed in the lens barrel (21), the lens movable bracket (22) being used to install at least one lens in the lens group (400); The driving device (3) is used to drive at least one of the lens movable support (22) and the lens barrel (21) to move relative to the support support (1) to perform a first function, the first function including interpupillary distance adjustment and / or focal length adjustment of the lens group (400); The adjustment device (4) includes a knob bracket (41) and a knob (42) disposed on the knob bracket (41), wherein the knob (42) is rotatably connected to the knob bracket (41); The control method for the lens module includes: The amount of rotation of the knob (42) relative to the knob bracket (41) is detected; Based on the amount of rotation, the drive device (3) is controlled to perform the first function.

23. The control method for the lens module according to claim 22, characterized in that, Along the axial direction (Z1) of the knob (42), the knob (42) is movably connected to the knob bracket (41) so that the knob (42) can move relative to the knob bracket (41) between an inserted position and a pulled-out position; the knob (42) protrudes from the knob bracket (41) at a greater height than it protrudes from the knob bracket (41) at the inserted position, and the knob (42) can rotate relative to the knob bracket (41) in both the inserted position and the pulled-out position; The control method for the lens module includes: Detect the first parameter value; wherein the first parameter value is used to reflect the position information of the knob (42) relative to the knob bracket (41) in the axial direction (Z1) of the knob (42); The position of the knob (42) relative to the knob bracket (41) in the axial direction is determined according to the value of the first parameter; If the knob (42) is in either the insertion position or the withdrawal position, the drive device (3) is controlled to perform the first function according to the amount of rotation of the knob (42) relative to the knob bracket (41); If the knob (42) is in either the insertion position or the withdrawal position, the head-mounted device is controlled to perform a second function based on the amount of rotation of the knob (42) relative to the knob bracket (41).

24. The control method for the lens module according to claim 23, characterized in that, The outer wall of the knob (42) has a detection area (420a), which includes a first detection area (420b) and a second detection area (420c) arranged along the axial direction (Z1) of the knob (42) and having different reflectivities. The adjustment device (4) includes a light emitting part (431) and a light receiving part (432). The light emitting part (431) is used to emit a first light beam toward the detection area (420a), and the light receiving part (432) is used to receive the reflected light beam after the first light beam is reflected by the detection area (420a). When the knob (42) is in the insertion position, the light emitting part (431) is oriented toward the first detection area (420b). When the knob (42) is in the withdrawal position, the light emitting part (431) is oriented toward the second detection area (420c). Detecting the first parameter value includes: determining the first parameter value based on the reflected beam received by the light receiving unit (432); The first parameter value includes at least one of the exposure time of the light receiving unit (432), the intensity value of the reflected light beam, and the brightness value of the reflected light beam.

25. The control method for a lens module according to any one of claims 22 to 24, characterized in that, The adjustment device (4) further includes a button element (44), which is disposed on the knob bracket (41) and is disposed opposite to the end face of the knob (42). The button element (44) can be pressed by the knob (42). The control method for the lens module further includes: controlling the head-mounted device to perform a third function when the button element (44) is pressed by the knob (42).

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