Optical module, focusable optical system and head-mounted display device

Abstract

The embodiment of the utility model discloses an optical module, a focusable optical system and a head-mounted display device, the optical module comprises a support, an image source assembly and at least one guide piece, the image source assembly is arranged on one side of the support, the guide piece is arranged on the support, the guide piece extends in the length direction perpendicular to the support, and the guide piece is arranged on the support. The power assembly is arranged on one side of the support in the length direction and is in transmission connection with the image source assembly so as to drive the image source assembly to linearly move along the guide part. The focus-adjustable optical system is provided with an optical module and an optical assembly. The head-mounted display device comprises a frame and a focusable optical system, wherein the focusable optical system is arranged on the frame.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of head-mounted display devices, and in particular to an optical module, a focus-adjustable optical system, and a head-mounted display device. BACKGROUND

[0002] Nowadays, VR (Virtual Reality), AR (Augmented Reality), and MR (Mixed Reality) attract more and more users. Users need to wear head-mounted display devices to experience the effect. Improving the experience of users and meeting the needs of specific groups such as myopic people are important directions for the development of head-mounted display devices. CONTENT OF THE INVENTION

[0003] The present disclosure provides an optical module, a focus-adjustable optical system, and a head-mounted display device.

[0004] To achieve the above object, the present disclosure provides the following technical solutions.

[0005] In a first aspect, the present disclosure provides an optical module, comprising: a support, an image source assembly, at least one guide, and a power assembly. The image source assembly is arranged on one side of the support. The guide is arranged on the support and extends along a length direction perpendicular to the support. The power assembly is arranged on one side of the support along the length direction. The power assembly and the image source assembly are in transmission connection to drive the image source assembly to move linearly along the guide.

[0006] In a second aspect, the present disclosure provides a focus-adjustable optical system, comprising: an optical module and an optical assembly. The optical module comprises: a support, an image source assembly arranged on one side of the support, a power assembly arranged on one side of the support along a length direction, and at least one guide extending along a length direction perpendicular to the support. The power assembly and the image source assembly are in transmission connection to drive the image source assembly to move linearly along a straight line where the guide is located. The optical assembly is arranged on the same side of the support as the image source assembly. The power assembly of the optical module drives the image source assembly to move to adjust the distance between the image source assembly and the optical assembly. The guide is arranged on the support or the optical assembly and extends along the length direction perpendicular to the support. The light emitted by the image source assembly can be projected on the optical assembly. The optical assembly can adjust the optical path of the light emitted by the image source assembly.

[0007] In a third aspect, the present disclosure provides a head-mounted display device, comprising: a frame and a focus-adjustable optical system arranged on the frame.

[0008] The technical solutions of the present disclosure are described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0009] The accompanying drawings, which constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0010] The present disclosure can be understood moreappreciably with reference to the following detailed description when considered inconnection with the accompanying drawings, in which:

[0011] Figure 1 An exploded view of an optical system provided by an embodiment of the present disclosure is shown;

[0012] Figure 2 A sectional view of an optical system provided by an embodiment of the present disclosure is shown;

[0013] Figure 3 A first perspective view of a spacer ring of an optical system provided by an embodiment of the present disclosure is shown;

[0014] Figure 4 A second perspective view of a spacer ring of an optical system provided by an embodiment of the present disclosure is shown;

[0015] Figure 5 A partial structural schematic view of an optical system provided by an embodiment of the present disclosure is shown;

[0016] Figure 6 A schematic view of an optical system provided by an embodiment of the present disclosure is shown.

[0017] In the drawings, 1, support; 11, top port; 12, annular barrier wall; 13, glue dispensing groove; 2, image source assembly; 21, spacer ring; 211, threaded groove; 212, guide fitting hole; 213, first guide hole; 214, second guide hole; 215, limiting portion; 22, lens; 23, display component; 3, driving member; 31, rotating shaft; 4, mounting frame; 41, first frame body; 42, second frame body; 43, connecting frame body; 44, mounting frame guide column; 5, first guide column; 6, second guide column; 7, heat conduction sheet; 8, flexible circuit board; 81, bending section; 82, first extension section; 83, second extension section; 9, frame; 10, optical assembly; 101, avoidance groove; 102, beam splitter; 103, mirror; a, eye.

[0018] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments will be described clearly and completely in combination with the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0020] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] Exemplary Overview

[0023] The head-mounted display device can also be referred to as a head-mounted display (HMD) or a head-mounted display. The head-mounted display device can be used to realize augmented reality (AR) effect, virtual reality (VR) effect, mixed reality (MR) effect, etc. The head-mounted display device can be presented in the form of glasses, helmet, etc. In the head-mounted display device, the image source assembly 2 can provide image information for the head-mounted display device, and the optical assembly 10 can adjust the light rays so that the light rays are projected to the eyes a of the user wearing the head-mounted display device, so that the user can view the image information.

[0024] Exemplary Structure

[0025] In some exemplary embodiments of the present disclosure, an optical module is provided. As shown in Figure 1 and Figure 2 The optical module provided by the embodiments of the present application can include a bracket 1, an image source assembly 2 and a power assembly. The image source assembly 2 is arranged on one side of the bracket 1, and the power assembly is arranged on the bracket 1. The power assembly provides the moving power of the image source assembly 2, so that the image source assembly 2 can move relative to the bracket 1.

[0026] In some alternative embodiments, the power assembly is located on one side of the support 1 along its length, thereby making full use of the internal space of the optical module. This allows for a compact structure of the optical module and reduces its volume without occupying the central position of the image source assembly 2 within the support 1.

[0027] In some alternative embodiments, the optical module further includes at least one guide that may extend perpendicularly to the bracket 1, the image source assembly 2 and the guide cooperate, and the power assembly and the image source assembly 2 are drively connected to drive the image source assembly 2 to move linearly along the guide.

[0028] In some alternative embodiments, the guide can be directly or indirectly fixed to the bracket 1, or the guide can be part of the bracket 1.

[0029] In some optional examples, the guide component is directly fixed to the bracket 1 by means of interference fit, bonding, or insertion. For example, the guide component can be fixed to the bracket 1 by interference fit. A mounting hole can be provided on the bracket 1, and one end of the guide component is interference-fitted with the mounting hole to fix it to the bracket 1.

[0030] In some alternative implementations, such as Figure 1 and Figure 2 As shown, the power assembly may include a rotating shaft 31, which may be threadedly connected to the image source assembly 2. The rotation of the rotating shaft 31 of the power assembly can drive the image source assembly 2 to move linearly along the guide. The transmission output form of the rotating shaft threaded drive can significantly reduce the size of the optical module, which is beneficial to the lightweighting of the optical module.

[0031] In some optional examples, the power unit may also use a worm gear or rack and pinion to transmit power to the image source component 2 and drive the image source component 2 to move linearly along the guide.

[0032] In some optional examples, the power assembly may include a drive element 3, which may be a motor. The rotating shaft 31 may be a part of the drive element 3, such as the output shaft of the drive element 3, which may have its own threads and be threaded to the image source assembly 2. Alternatively, the rotating shaft 31 may not be part of the drive element 3, where the drive element 3 has an output shaft fixedly connected to the rotating shaft 31, which may also have its own threads and be threaded to the image source assembly 2. The fixed connection between the output shaft and the rotating shaft 31 can be achieved using any of the following methods: fastener connection, snap-fit ​​connection, and welding.

[0033] A threaded groove 211 can be provided on the image source component 2. The rotating shaft 31 has an external thread and is threadedly connected to the threaded groove 211 of the image source component 2. Rotation of the rotating shaft 31 can drive the image source component 2 to move.

[0034] In some optional embodiments, the power assembly can include a driving member 3 and a mounting bracket 4, the driving member 3 is in transmission connection with the image source assembly 2, and the mounting bracket 4 can be connected to at least one of the driving member 3 and the support 1. For example, the mounting bracket 4 can be welded to the driving member 3, or the mounting bracket 4 can be bonded to the support 1.

[0035] In an optional example, the mounting bracket 4 is provided with a mounting bracket guide column 44. The mounting bracket guide column 44 can be perpendicular to the length direction of the support 1, the image source assembly 2 has a guide matching hole 212, the mounting bracket guide column 44 penetrates the guide matching hole 212, and the mounting bracket guide column 44 can cooperate with the above-mentioned guide to jointly limit the movement direction of the image source assembly 2. In the absence of the above-mentioned guide, the mounting bracket guide column 44 can also limit the movement of the image source assembly 2 along the extension direction of the rotation shaft 31 and the guide column.

[0036] In some optional embodiments, the mounting bracket 4 is provided with a rotation matching part, and the driving member 3 can be a motor. The end of the rotation shaft 31 of the motor is rotatably connected to the rotation matching part to support the end of the rotation shaft 31, reduce the shaking of the rotation shaft 31, and ensure the reliability of power transmission.

[0037] In some optional embodiments, as shown in Figure 1 and Figure 2 The mounting bracket 4 includes a first bracket body 41, a second bracket body 42, and a connecting bracket body 43. The first bracket body 41 and the second bracket body 42 are spaced apart and arranged in parallel, and the connecting bracket body 43 is connected to the first bracket body 41 and the second bracket body 42, respectively. The mounting bracket guide column 44 is connected to the first bracket body 41 and the second bracket body 42, respectively. The first bracket body 41 is fixedly connected to the driving member 3. The fixed connection between the first bracket body 41 and the driving member 3 can be achieved by any one of bonding and welding. The rotation matching part includes a bearing arranged on the second bracket body 42. The rotation shaft 31 of the driving member 3 penetrates the first bracket body 41, and the end of the rotation shaft 31 is supported by the bearing.

[0038] In some optional embodiments, the optical module includes at least one guide, as shown in Figures 1 to 4 The optical module can include a first guide column 5 and a second guide column 6. The first guide column 5 and the second guide column 6 are arranged on the two sides of the support 1 along the length direction. The first guide column 5 is close to the power assembly, and the second guide column 6 is away from the power assembly. The image source assembly 2 is provided with a first guide hole 213 and a second guide hole 214 on the two sides along the length direction, respectively. The first guide column 5 penetrates the first guide hole 213, and the second guide column 6 penetrates the second guide hole 214. By arranging the guide columns on the two sides of the image source assembly 2 along the length direction, the movement of the image source assembly 2 can be guided and limited on both sides, which is beneficial to the stable movement of the image source assembly 2 as a whole and avoids the problem of overall skewing.

[0039] In some alternative embodiments, the first guide hole 213 can be a round hole, and the second guide hole 214 can be a waist round hole. That is, the guide hole close to the power assembly is a round hole, and the guide hole away from the power assembly is a waist round hole. The round hole and the first guide post 5 are in a small gap fit, and the second guide post 6 and the waist round hole have a movable gap, so as to reduce the degree of freedom, prevent the image source assembly 2 from being stuck, and smoothly move up and down.

[0040] In some possible embodiments, as shown in Figure 2 The optical module further includes a heat conduction sheet 7, which can be attached to the image source assembly 2 and the bracket 1, respectively. The heat conduction sheet 7 can conduct the heat generated by the optical module to the bracket 1, and radiate the heat to the outside through the bracket 1, so as to achieve good heat dissipation efficiency and keep the optical module in good condition. The heat conduction sheet 7 can be a graphite sheet or other sheet-shaped body with good heat conduction.

[0041] In some possible embodiments, as shown in Figure 5 The bracket 1 can have a receiving cavity and a top opening 11 communicating with the receiving cavity. The bracket 1 has an annular retaining wall 12 extending along the edge of the top opening 11. The power assembly is at least partially accommodated in the receiving cavity, and the annular retaining wall 12 and the driving member 3 form a dispensing groove 13. The dispensing groove 13 is filled with glue, which bonds and fixes the motor and the bracket 1. The annular retaining wall 12 extends along the edge of the top opening 11, which prolongs the length of the dispensing groove 13, increases the dispensing length, and improves the bonding strength of the motor and the bracket 1.

[0042] In some possible embodiments, the bracket 1 in the optical module can be provided with a limiting mechanism, such as a limiting block or a limiting ring, to limit the vertical height of the motor installation. The limiting mechanism can accurately control the distance between the end of the driving member 3 away from the rotating shaft 31 and the top opening 11, and further control the volume of the optical module.

[0043] In some possible embodiments, as shown in Figure 1 and Figure 2 The image source assembly 2 can include a spacer ring 21 and a to-be-adjusted component. The to-be-adjusted component is connected to the spacer ring 21, and can include at least one of a display component 23 and a lens 22. At least one of the display component 23 and the lens 22 is connected to the spacer ring 21, and the output assembly is connected to the spacer ring 21.

[0044] In some alternative examples, the spacer ring 21 can be provided with a threaded groove 211 to be threadedly connected to the rotating shaft 31. The spacer ring 21 is provided with at least one of a guide fitting hole 212, a first guide hole 213 and a second guide hole 214 to ensure that the spacer ring 21 cooperates with the guide or the mounting frame guide post 44, and to limit the movement direction of the spacer ring 21.

[0045] In an optional example, the component to be adjusted can include the display component 23 and the lens 22, and the display component 23 and the lens 22 can be arranged on the spacer 21, for example, the display component 23 and the lens 22 are arranged on two sides of the spacer 21 along the thickness direction. The spacer 21 is provided with a clearance, and the light emitted by the display component 23 can enter the lens 22 through the clearance.

[0046] In an optional example, the display component 23 and the lens 22 can be arranged on two sides of the spacer 21 along the thickness direction, and the display component 23, the lens 22 and the spacer 21 are fixedly connected to form an integrated component. The spacer 21 moves to simultaneously drive the display component 23 and the lens 22 to move.

[0047] In an optional example, the component to be adjusted can include the lens 22, and the lens 22 and the spacer 21 can be fixedly connected to form an integrated component, or can be connected and assembled together by fasteners, clamps or adhesives, etc. The spacer 21 moves to simultaneously drive the lens 22 to move.

[0048] In an optional example, at least one of the upper and lower sides of the spacer 21 can be provided with a limiting portion 215, and the limiting portion 215 can be a protruding structure. When the spacer 21 moves up and down, the protruding structure stops moving when it hits the mounting frame 4, thereby effectively limiting the lifting range of the spacer 21.

[0049] In an optional example, the display component 23 can be used to emit light for displaying a picture. The display component 23 can include, but is not limited to, an Organic Light Emitting Diode (OLED) image source, a Liquid Crystal (LC) image source, a Liquid Crystal on Silicon (LCOS) image source, a Micro Electro Mechanical System (MEMS) image source, a Digital Micromirror Device (DMD), etc. For example, the display component 23 can be an OLED display screen.

[0050] In an optional example, the lens 22 can be an aspherical lens 22, which can correct field curvature, pupil swim and chromatic aberration to ensure the imaging quality of the optical system.

[0051] In an optional example, as shown in FIG. 2, the spacer 21 can be provided with a limiting portion 215, and the limiting portion 215 can be a protruding structure. Figure 2 and Figure 5As shown, the optical module can include a flexible circuit board 8, the flexible circuit board 8 has a bending segment 81 and a first extension segment 82 and a second extension segment 83 located on both sides of the bending segment 81, the first extension segment 82 is connected to the image source assembly 2, and the second extension segment 83 is partially fixedly connected to the support 1. In order to reduce the reverse force of the flexible circuit board 8, in the embodiment of the present disclosure, the flexible circuit board 8 is pre-bent to form the bending segment 81, and the second extension segment 83 is provided with sufficient gap with the support 1, and the flexible circuit board 8 is first pasted to the support 1 for fixation, and then connected with other components, so as to prevent the posture of the flexible circuit board 8 from being unstable and thus exerting excessive pressure on the display component 23.

[0052] As shown in Figure 1 and Figure 2 The embodiment of the present application also provides an optical system with adjustable focus, which comprises an optical module and an optical assembly 10. The optical module comprises a support 1, an image source assembly 2, a power assembly and at least one guide. The image source assembly 2 is arranged on one side of the support 1, the power assembly is arranged on one side of the support 1 along the length direction, and the guide extends along the length direction perpendicular to the support 1. The power assembly and the image source assembly 2 are drivingly connected to drive the image source assembly 2 to move linearly along the straight line where the guide is located. The optical assembly 10 is arranged on the same side of the support 1 as the image source assembly 2. The power assembly of the optical module drives the image source assembly 2 to move, so as to adjust the distance between the image source assembly 2 and the optical assembly 10. The light emitted by the image source assembly 2 can be projected on the optical assembly 10, and the optical assembly 10 can adjust the optical path of the light emitted by the image source assembly 2.

[0053] It can be understood that the optical system in the present application can be any one of the optical modules described above.

[0054] In an optional example, as shown in Figure 2 The guide is arranged on the support 1. For example, the support 1 can be provided with a mounting hole, and one end of the guide can be inserted into the mounting hole. The guide and the mounting hole are in interference fit, so as to be fixed on the support 1.

[0055] In an optional example, the guide can also not be fixed on the support 1. For example, the guide can be fixed on the optical assembly 10. The optical assembly 10 can have a housing, and the guide can be fixed on the housing of the optical assembly 10. The guide is fixed on the housing of the optical assembly 10, so that the guide is closer to the optical element of the optical assembly 10, the structural size chain of the image source assembly 2 and the optical element is shorter, and the optical performance stability of the optical system is better.

[0056] In an optional example, as shown in Figure 5As shown, the top of the housing of the optical assembly 10 is used to connect and fix with the support 1 of the optical module. The housing and the support 1 can be connected and fixed by using any one of the following ways: fasteners, adhesive bonding and clamping structure. For example, the support 1 of the optical assembly 10 can be covered on the top of the housing, and after adjusting the relative position of the support 1 and the housing, the support 1 and the housing can be bonded and fixed by filling the gap between the support 1 and the housing with adhesive.

[0057] In some optional embodiments, as shown in Figure 2 When the guide is arranged on the support 1, the housing of the optical assembly 10 can be provided with a relief groove 101 to avoid the guide, and the end of the guide can be inserted into the relief groove 101. When the guide is arranged on the housing of the optical assembly 10, a corresponding relief groove 101 can be provided on the support 1.

[0058] In some optional embodiments, the optical assembly 10 and the optical module are arranged along the length direction of the guide in sequence. The relative position of the optical assembly 10 and the support 1 is fixed, and the image source assembly 2 can move along the guide under the action of the power assembly. The image source assembly 2 is used to emit light capable of forming an image, and the light is projected to the first side direction of the image source assembly 2. The optical assembly 10 is used to adjust the optical path of the light emitted by the image source assembly 2, so that the light can be projected into the user's eye a, thereby forming an image in the user's eye.

[0059] In an optional example, as shown in Figure 6 The optical assembly 10 can include a housing and an optical component, and the optical component can include a beam splitter 102 and a mirror 103. The image source assembly 2 can project light in the vertical direction. The beam splitter 102 can refract the light emitted by the image source assembly 2 and project the light to the second side direction. The mirror 103 reflects the light projected by the beam splitter 102 and projects the light to the first side direction. The light can pass through the beam splitter 102 and be projected into the user's eye a, thereby forming a virtual image in the user's field of view. Adjusting the lifting movement of the image source assembly 2 can move the image source assembly close to or away from the beam splitter 102, thereby adjusting the focal length.

[0060] It can be understood that the optical assembly 10 can not be limited to the above-mentioned type of optical assembly 10, and can also be an optical assembly 10 including a stereoscopic beam splitter, a prism, a free-form optical element, a light waveguide element, etc.

[0061] As shown in Figure 1 and Figure 2 Some exemplary embodiments of the present disclosure also provide a head-mounted display device, which includes a frame 9 and an optical system. The optical system can be the above-mentioned adjustable focus optical system, and the optical system can be arranged on the frame 9.

[0062] The at least partially adjustable focusing optical system is arranged in the head-mounted display device, and the image source assembly 2 can be automatically controlled to move for focusing by the power assembly, which is convenient to operate and meets the use experience of users with different vision conditions such as myopia and hypermetropia.

[0063] In an optional example, the at least partially power assembly, optical module and adjustable focusing optical system can be arranged in the head-mounted display device, and the focal length adjustment can be realized by circuit control, without opening a rotary knob hole on the surface of the head-mounted display device, so that the head-mounted display device has good appearance integrity and high aesthetic degree. The rotary knob hole is not arranged on the head-mounted display device, so that the structural strength of the head-mounted display device is not affected, and the waterproof and dustproof performance of the head-mounted display device is excellent, and the product quality is improved.

[0064] In an optional example, a head-mounted display device is provided, which includes an optical module, and the optical module can include a heat conduction sheet 7 and a support 1. The heat conduction sheet 7 can be first pasted to the support 1, and then bent and pasted to other structures on the head-mounted display device, such as a frame 9 of the head-mounted display device, so as to achieve a better heat dissipation effect.

[0065] In an optional example, the head-mounted display device includes a distance measuring component and a distance measuring matching piece. The distance measuring component is arranged on any one of the frame 9 and the support 1, and the distance measuring matching piece is arranged on the image source assembly 2. The distance measuring component is used to detect the distance between the distance measuring component and the distance measuring matching piece.

[0066] The distance measuring component can be a TMR sensor, a Hall sensor or the like. The frame 9 can be provided with a PCB circuit board, and the distance measuring component is electrically connected to the PCB circuit board. The distance measuring matching piece can be a permanent magnet.

[0067] In an optional example, the head-mounted display device can use a stepping motor and a distance measuring component to realize closed-loop control of the focusing degree. The distance measuring component is used to detect the distance between the distance measuring component and the distance measuring matching piece, and to monitor the distance of the up-down movement of the image source assembly 2. The rotation angle of the stepping motor and the input voltage have good followability, so that the difference between the movement position and the target position of the image source assembly 2 monitored by the distance measuring component can be obtained. According to the difference, a voltage pulse instruction corresponding to the stepping motor is given to control the rotation angle, so that the image source assembly 2 is moved to the corresponding position, and the control of the virtual image distance of the module is realized by using this dynamic closed-loop feedback system.

[0068] The head-mounted display device provided by the embodiments of the present disclosure can realize quantitative setting of the degree by the adjustable focusing optical system and the cooperation of the sensor and the control logic, and the head-mounted display device can be automatically adjusted to the corresponding degree, which avoids the problem that the degree cannot be quantitatively set by manual focusing and the user can only set the degree by actual optical experience.

[0069] The foregoing description has been presented for the purposes of illustration and description. Furthermore, the description is not intended to limit the embodiments of the disclosure to the forms disclosed herein. Although the various example aspects and embodiments have been described herein with regard to particular aspects and embodiments, those skilled in the art will recognize that certain modifications, changes, substitutions, additions and sub-combinations can be made without departing from the spirit of the disclosure.

Claims

1. An optical module, comprising: a support frame; an image source assembly disposed on one side of the support frame; at least one guide member disposed on the support frame and extending along a direction perpendicular to a length direction of the support frame; a power assembly disposed on one side of the support frame along the length direction, the power assembly being in driving connection with the image source assembly to drive the image source assembly to move linearly along the guide member.

2. The optical module according to claim 1, wherein the power assembly comprises a rotating shaft, the rotating shaft is threadedly connected to the image source assembly, the rotating shaft of the power assembly is capable of driving the image source assembly to move linearly along the guide member.

3. The optical module according to claim 1, wherein the power assembly comprises a driving member and a mounting frame, the driving member is in driving connection with the image source assembly, the mounting frame is connected to at least one of the driving member and the support frame, the mounting frame is provided with a mounting frame guide post, the image source assembly is provided with a guide matching hole, and the mounting frame guide post penetrates through the guide matching hole.

4. The optical module according to claim 1, wherein the at least one guide member comprises a first guide post and a second guide post, the first guide post and the second guide post are separately disposed on two sides of the support frame along the length direction, the first guide post is close to the power assembly, and the second guide post is away from the power assembly, the image source assembly is provided with a first guide hole and a second guide hole on two sides thereof along the length direction, the first guide post penetrates through the first guide hole, and the second guide post penetrates through the second guide hole.

5. The optical module according to claim 1, wherein a heat conduction sheet is further provided, and the heat conduction sheet is attached to the image source assembly and the support frame respectively.

6. The optical module according to claim 1, wherein the support frame is provided with a receiving cavity and a top opening communicating with the receiving cavity, the support frame is provided with an annular blocking wall extending along a rim of the top opening, the power assembly is at least partially accommodated in the receiving cavity, a point gluing groove is formed between the annular blocking wall and the power assembly, and the point gluing groove is filled with a glue.

7. The optical module according to any one of claims 1 to 6, wherein the image source assembly comprises a spacer and a component to be adjusted, and the component to be adjusted is connected to the spacer, the component to be adjusted comprises at least one of a display component and a lens. 8.An optical system capable of adjusting focus, comprising: an optical module, comprising a support frame and an image source assembly disposed on one side of the support frame; a power assembly disposed on one side of the support frame along a length direction, at least one guide member extending along a direction perpendicular to the length direction of the support frame, and the power assembly being in driving connection with the image source assembly to drive the image source assembly to move linearly along a straight line where the guide member is located; an optical assembly disposed on the same side of the support frame as the image source assembly, and the power assembly of the optical module driving the image source assembly to move to adjust a distance between the image source assembly and the optical assembly; wherein the guide member is disposed on the support frame or the optical assembly and extends along a direction perpendicular to the length direction of the support frame, light emitted by the image source assembly can be projected on the optical assembly, and the optical assembly can adjust an optical path of the light emitted by the image source assembly. 9.A head-mounted display device, comprising: a frame; The adjustable focus optical system of claim 8, disposed on the frame.

10. The head-mounted display device of claim 9, wherein, comprising a distance measuring component and a distance measuring counterpart; the distance measuring component is disposed on any one of the frame and the support; the distance measuring counterpart is disposed on the image source assembly, the distance measuring component being configured to detect a distance between the distance measuring component and the distance measuring counterpart.

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