Optical zoom module and head-mounted electronic device

Abstract

The invention provides an optical zoom module and a head-mounted electronic device, and the optical zoom module comprises a first lens barrel which comprises a straight groove and a bump; the second lens cone is arranged in the first lens cone and comprises a convex rib; the operating element is arranged outside the first lens cone and comprises an inclined groove and a limiting sliding groove, the inclined groove and the straight groove are stacked in the radial direction, the convex rib penetrates through the straight groove and is positioned in the inclined groove, and the convex block is positioned in the limiting sliding groove; when the operation element is rotated, the inclined groove enables the convex rib of the second lens barrel to move along the corresponding straight groove and the inclined groove, and meanwhile, the limiting sliding groove moves relative to the convex block. Therefore, the assembly precision of the optical zoom module can be improved, and the focusing is easy; the convex ribs can be prevented from being accidentally separated from the straight grooves and the inclined grooves, or the convex ribs can be prevented from impacting the tail ends of the straight grooves and the tail ends of the inclined grooves.

Description

Technical Field

[0001] The invention relates to an optical zoom module, and in particular to a head-mounted electronic device including the optical zoom module. Background Art

[0002] Virtual Reality (VR) is a computer simulation system that can create and experience a virtual world. It can use computers to generate an interactive analog environment that integrates multi-source information, allowing users to immerse themselves in the environment. With the continuous development of technology, VR is increasingly being used in industries and fields including medicine, entertainment, industrial simulation, aerospace, education, etc.

[0003] As one of the important components of VR technology, head mounted devices (HMD) are gradually becoming popular in life. HMD can expand the level of scientific three-dimensional visualization and enhance the user-computer interaction performance. With the application of VR technology in many fields, HMD has also received more and more attention.

[0004] Currently, head-mounted electronic devices can be used with glasses or without glasses, so the design of the head-mounted electronic device will consider reserving space for glasses. However, if a myopic user wears glasses and then uses the head-mounted electronic device, it may still compress the user's glasses and cause discomfort, or damage the glasses. If a myopic user chooses not to wear glasses and directly uses the head-mounted electronic device, the user will not be able to see the image clearly, or will feel uncomfortable due to focal length problems, which will make the user resist the head-mounted electronic device.

[0005] Therefore, there is a need to provide an optical zoom module and a head-mounted electronic device that can solve the aforementioned problems. Summary of the invention

[0006] An object of the present invention is to provide an optical zoom module, which can improve the assembly accuracy of the optical zoom module and is easy for a user to adjust the focus of the optical zoom module; furthermore, it can prevent the rib from accidentally escaping from the vertical groove and the oblique groove, or it can prevent the rib from colliding with the tail end of the vertical groove and the tail end of the oblique groove.

[0007] According to the above-mentioned purpose, the present invention provides an optical zoom module, which has a central axis and a radial direction perpendicular to the central axis, and comprises: a first lens barrel, surrounding the central axis, and comprising a first barrel body, a straight groove and a protrusion, wherein the straight groove penetrates the first barrel body, and the protrusion is located on an outer ring surface of the first barrel body; a second lens barrel, surrounding the central axis, disposed in the first lens barrel, and comprising a second barrel body and a convex rib, wherein the convex rib is located on an outer ring surface of the second barrel body; and an operating element, surrounding The central axis is arranged outside the first lens barrel and includes a ring body, an oblique groove and a limiting sliding groove, wherein the oblique groove and the limiting sliding groove are both located on an inner ring surface of the ring body, the oblique groove and the vertical groove are stacked along the radial direction, the convex rib passes through the vertical groove and is positioned in the oblique groove, and the protrusion is located in the limiting sliding groove; wherein when the operating element is rotated, the oblique groove causes the convex rib of the second lens barrel to move along the corresponding vertical groove and the oblique groove, and at the same time the limiting sliding groove also moves relative to the protrusion.

[0008] The present invention further provides an optical zoom module, wherein the straight groove is parallel to the central axis and includes a first straight position and a second straight position relative to each other, the first straight position being adjacent to an image source side, the limiting sliding groove includes a first tail end and a second tail end relative to each other, the first tail end being adjacent to the oblique groove, and when the operating element is rotated along a rotation direction, a force of the oblique groove causes the convex rib of the second lens barrel to move from the first straight position to the second straight position along the corresponding straight groove and the oblique groove, and at the same time, the limiting sliding groove also moves relative to the protrusion so that the protrusion changes from a position adjacent to the first tail end to a position adjacent to the second tail end.

[0009] The present invention further provides an optical zoom module. When the operating element is rotated along another rotation direction, another force of the oblique groove causes the convex rib of the second lens barrel to move from the second vertical position to the first vertical position along the corresponding vertical groove and the oblique groove, and at the same time, the limiting sliding groove also moves relative to the protrusion so that the protrusion changes from a position adjacent to the second tail end side to a position adjacent to the first tail end side.

[0010] The present invention further provides an optical zoom module, further comprising: a first lens unit disposed in the first lens barrel; and a second lens unit disposed in the second lens barrel.

[0011] The present invention further provides an optical zoom module, further comprising an image source, which is arranged on a side of the first lens barrel adjacent to the image source, wherein the second lens unit arranged in the second lens barrel is moved from the first straight position to the second straight position, thereby adjusting the distance between the second lens unit and the image source.

[0012] The present invention further provides an optical zoom module, wherein the number of the ribs, the number of the straight grooves and the number of the oblique grooves are three respectively, and the number of the limiting sliding grooves and the number of the protrusions are three respectively.

[0013] The present invention further provides an optical zoom module. When the operating element rotates and the protrusion changes from contacting the first end of the limiting sliding groove to contacting the second end, the operating element rotates around the central axis to a maximum angle between 60 and 120 degrees.

[0014] The present invention further provides an optical zoom module, wherein the oblique groove and the limiting sliding groove do not penetrate the ring body.

[0015] The present invention further provides an optical zoom module, wherein a damping oil is disposed between the first lens barrel and the operating element; and the damping oil is disposed between the convex rib of the second lens barrel and the vertical groove of the first lens barrel.

[0016] The present invention further provides a head-mounted electronic device, comprising: a housing; the optical zoom module disposed in the housing; and a control unit disposed in the housing.

[0017] According to the optical zoom module of the present invention, during assembly, the operating element is positioned via the convex block, and the convex rib of the second lens barrel is precisely set in the straight groove and the oblique groove, which can avoid the user's feeling of not being smooth when rotating the operating element, thereby improving the assembly accuracy of the optical zoom module. Furthermore, when the convex rib of the second lens barrel moves along the corresponding straight groove and the oblique groove, the second lens unit set in the second lens barrel also moves parallel to the central axis direction, so that the imaging position of the optical zoom module can be adjusted, and the user can easily perform focusing of the optical zoom module. In addition, when the operating element is rotated to move the second lens unit (that is, when adjusting the imaging position of the optical zoom module), the limiting sliding groove will also be restricted by the protrusion and move within a limited range. This can limit the rotation of the operating element within a limited range, and further limit the limited movement of the rib within the vertical groove and the oblique groove, thereby preventing the rib from accidentally escaping from the vertical groove and the oblique groove, or preventing the rib from colliding with the rear end of the vertical groove and the rear end of the oblique groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 4 is an exploded perspective schematic diagram of an optical zoom module according to an embodiment of the present invention.

[0019] Figure 2 The figure is a schematic cross-sectional view of an optical zoom module according to an embodiment of the present invention, showing that the second lens unit disposed in the second lens barrel moves from a first straight position to a second straight position.

[0020] Figure 3a It is a schematic side view of an assembly of an optical zoom module according to an embodiment of the present invention, showing that the convex rib of the second lens barrel moves from a first vertical position to a second vertical position.

[0021] Figure 3b It is a schematic side view of an assembly of an optical zoom module according to another embodiment of the present invention, showing that the convex rib of the second lens barrel moves from a first vertical position to a second vertical position.

[0022] Figure 4 The figure is an exploded perspective view of a first lens barrel, a second lens barrel and an operating element of an optical zoom module according to an embodiment of the present invention.

[0023] Figure 5 FIG. 1 is a partial three-dimensional schematic diagram of an operating element of an optical zoom module according to an embodiment of the present invention.

[0024] Figure 6 FIG. 4 is a schematic three-dimensional diagram of a first lens barrel of an optical zoom module according to an embodiment of the present invention.

[0025] Figure 7 FIG. 4 is a three-dimensional schematic diagram of a head-mounted electronic device according to an embodiment of the present invention.

[0026] In the figure: 1 optical zoom module; 10a central axis; 10b radial direction; 11 second lens barrel; 110 second barrel body; 111 rib; 112 outer annular surface; 12 first lens barrel; 121 vertical groove; 122 first barrel body; 123 convex block; 124 outer annular surface; 13 operating element; 131 oblique groove; 1310 extension direction; 1310' extension direction; 132 limiting sliding groove; 1321 first tail end; 1322 second tail end; 133 inner annular surface; 134 annular body; 14 second lens unit; 141 optical lens; 15 first lens unit; 151 optical lens; 16 damping oil; 17 indicator cover; 18 image source seat; 181 image source; 2 head-mounted electronic device; 20 housing; 22 control unit; E1 left eye; E2 right eye; P1 first vertical position; P2 second vertical position; S1 eye side; S2 image source side. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0028] Figure 1 FIG. 4 is an exploded perspective schematic diagram of an optical zoom module according to an embodiment of the present invention. Figure 2The figure is a schematic cross-sectional view of an optical zoom module according to an embodiment of the present invention, showing that the second lens unit disposed in the second lens barrel moves from a first straight position to a second straight position. Figure 3a FIG. 1 is a schematic side view of an optical zoom module according to an embodiment of the present invention, showing that the rib of the second lens barrel moves from the first vertical position to the second vertical position. Figure 1 , Figure 2 and Figure 3a The optical zoom module 1 has a central axis 10 a, an eye side S1 and an image source side S2 , and includes: a first lens barrel 12 , a first lens unit 15 , a second lens barrel 11 , a second lens unit 14 and an operating element 13 .

[0029] The first lens barrel 12 (which may be referred to as a fixed barrel) surrounds the central axis 10a and includes a first barrel body 122, a straight groove 121 and a protrusion 123 (protrusion). The straight direction of the straight groove 121 refers to the direction in which the groove extends parallel to the central axis 10a. The first lens barrel 12 may be made of plastic material. The straight groove 121 runs through the first barrel body 122, and the protrusion 123 (which may be referred to as a stop protrusion) is located on the outer annular surface 124 of the first barrel body 122. The first lens unit 15 is disposed in the first lens barrel 12. The first lens unit 15 includes an optical lens 151. In the present embodiment, the total number of optical lenses 151 is 1, but it is not limited thereto, and the optical lens 151 may be made of plastic or glass material.

[0030] The second lens barrel 11 (which may be called a straight-in barrel) surrounds the central axis 10a and is disposed in the first lens barrel 12. The second lens barrel 11 includes a second barrel body 110 and a rib 111. The rib 111 is located on the outer annular surface 112 of the second barrel body 110. The second lens barrel 11 may be made of plastic material. The second lens unit 14 is disposed in the second lens barrel 11. The second lens unit 14 includes an optical lens 141. In the present embodiment, the total number of the optical lens 141 is 1, but it is not limited thereto, and the optical lens 141 may be made of plastic or glass material.

[0031] Figure 4 FIG. 1 is an exploded perspective view of a first lens barrel, a second lens barrel and an operating element of an optical zoom module according to an embodiment of the present invention. Figure 1 , Figure 2 , Figure 3a and Figure 4The operating element 13 (which may be referred to as an operating ring) surrounds the central axis 10a, is disposed outside the first lens barrel 12, and includes a ring body 134, an oblique groove 131, and a limiting sliding groove 132. The operating element 13 may be made of a plastic material. The oblique groove 131 and the limiting sliding groove 132 are both located on the inner annular surface 133 of the ring body 134, and do not penetrate the ring body 134, but are not limited thereto. The oblique direction of the oblique groove 131 refers to the direction in which the groove extends along the inner annular surface 133 with a specific slope. In the present embodiment, the extension direction 1310 of the oblique groove 131 is counterclockwise (viewed from the eye side S1 direction). The limiting sliding groove 132 includes a first tail end 1321 and a second tail end 1322 opposite to each other, wherein the first tail end 1321 can be adjacent to the oblique groove 131 and communicate with it, and the second tail end 1322 is a closed end of the limiting sliding groove. The oblique groove 131 and the straight groove 121 of the first lens barrel 12 are stacked and arranged along the radial direction 10b (the radial direction 10b is perpendicular to the central axis 10a). The rib 111 passes through the straight groove 121 and is positioned in the oblique groove 131, and the protrusion 123 is located in the limiting sliding groove 132.

[0032] According to the optical zoom module 1 of the present invention, during assembly, the operating element 13 is positioned via the protrusion 123, and the rib 111 of the second lens barrel 11 is precisely disposed in the straight groove 121 and the oblique groove 131, so that the user can avoid the feeling of discomfort when rotating the operating element 13, thereby improving the assembly accuracy of the optical zoom module 1. Furthermore, when the operating element 13 is rotated, the oblique groove 131 causes the rib 111 of the second lens barrel 11 to move along the corresponding straight groove 121 and the oblique groove 131, and at the same time, the limiting sliding groove 132 also moves relative to the protrusion 123. When the convex rib 111 of the second lens barrel 11 moves along the corresponding straight groove 121 and the oblique groove 131, the second lens unit 14 disposed in the second lens barrel 11 also moves parallel to the central axis 10a, so that the imaging position of the optical zoom module 1 can be adjusted, and the user can easily adjust the focal length of the optical zoom module 1. In addition, when the operating element 13 is rotated to move the second lens unit 14 (i.e., when adjusting the imaging position of the optical zoom module 1), the limiting sliding groove 132 will also be limited by the protrusion 123 and move within a limited range. In this way, the operating element 13 can be limited to rotate within a limited range, thereby limiting the rib 111 from moving within a limited range within the straight groove 121 and the oblique groove 131, thereby preventing the rib 111 from accidentally escaping from the straight groove 121 and the oblique groove 131, or preventing the rib 111 from colliding with the rear end of the straight groove 121 and the rear end of the oblique groove 131.

[0033] For more details, please refer to Figure 2 and Figure 3a The straight groove 121 of the first lens barrel 12 is parallel to the central axis 10a, and includes a first straight position P1 and a second straight position P2 opposite to each other, wherein the first straight position P1 is adjacent to the image source side S2, and the second straight position P2 is adjacent to the eye side S1. When the operating element 13 is rotated along a rotation direction (for example, the rotation direction is counterclockwise when viewed from the eye side S1), a force (for example, a resisting force) of the oblique groove 131 can cause the convex rib 111 of the second lens barrel 11 to move from the first straight position P1 to the second straight position P2 along the corresponding straight groove 121 and the oblique groove 131, and at the same time, the limiting sliding groove 132 also moves relative to the protrusion 123 so that the protrusion 123 changes from a position adjacent to the first tail end 1321 to a position adjacent to the second tail end 1322, so as to adjust the imaging position of the optical zoom module 1 to the first imaging position. When the operating element 13 is rotated along another rotation direction (for example, the other rotation direction is clockwise when viewed from the eye side S1), another force (for example, a resistance force) of the oblique groove can cause the convex rib 111 of the second lens barrel 11 to move from the second straight position P2 to the first straight position P1 along the corresponding straight groove 121 and the oblique groove 131, and at the same time, the limiting sliding groove 132 also moves relative to the protrusion 123 so that the protrusion 123 changes from a position adjacent to the second tail end 1322 to a position adjacent to the first tail end 1321, so as to adjust the imaging position of the optical zoom module 1 to the second imaging position.

[0034] Please refer to Figure 3b On the contrary, in another embodiment, the extension direction 1310' of the oblique groove 131 of the operating element 13 is clockwise (as viewed from the eye side S1). When the operating element 13 is rotated along a rotation direction (for example, as viewed from the eye side S1, the rotation direction is clockwise), a force (for example, a resistance force) of the oblique groove 131 can cause the convex rib 111 of the second lens barrel 11 to move from the first straight position P1 to the second straight position P2 along the corresponding straight groove 121 and the oblique groove 131, and at the same time, the limiting sliding groove 132 also moves relative to the protrusion 123 so that the protrusion 123 changes from a position adjacent to the first tail end 1321 to a position adjacent to the second tail end 1322. When the operating element 13 is rotated along another rotation direction (for example, the other rotation direction is counterclockwise when viewed from the eye side S1), another force (for example, a resistance force) of the oblique groove 131 can cause the convex rib 111 of the second lens barrel 11 to move from the second straight position P2 to the first straight position P1 along the corresponding straight groove 121 and the oblique groove 131, and at the same time, the limiting sliding groove 132 also moves relative to the protrusion 123 so that the protrusion 123 changes from a position adjacent to the second tail end 1322 to a position adjacent to the first tail end 1321.

[0035] Figure 5 FIG. 1 is a partial three-dimensional schematic diagram of an operating element of an optical zoom module according to an embodiment of the present invention. Figure 6 FIG. 1 is a perspective diagram of a first lens barrel of an optical zoom module according to an embodiment of the present invention. Figure 3a , Figure 5 and Figure 6 When the operating element 13 rotates and the protrusion 123 contacts the first tail end 1321 of the limiting sliding groove 132 to the second tail end 1322, the operating element 13 rotates around the central axis 10a to a maximum angle, and the maximum angle can be between 60 and 120 degrees depending on the zoom and the size requirements of the optical zoom module. For example, when the maximum rotation angle of the optical zoom module is designed to be 60 degrees, and the operating element 13 rotates 60 degrees from the initial position, the rib 111 of the second lens barrel 11 can be moved from the first straight position P1 to the second straight position P2; for another example, when the maximum rotation angle of the optical zoom module is designed to be 120 degrees, and the operating element 13 rotates 120 degrees from the initial position, the rib 111 of the second lens barrel 11 can be moved from the first straight position P1 to the second straight position P2.

[0036] Please refer to Figure 3a and Figure 4 In this embodiment, the number of the ribs 111, the number of the straight grooves 121, and the number of the oblique grooves 131 are three respectively. Since the number of the ribs 111, the number of the straight grooves 121, and the number of the oblique grooves 131 are three respectively, each of the ribs 111 can move more smoothly along the corresponding straight grooves 121 and the oblique grooves 131. The number of the limiting sliding grooves 132 and the number of the protrusions 123 are three respectively. Since the number of the limiting sliding grooves 132 and the number of the protrusions 123 are three respectively, each of the limiting sliding grooves 132 can move more smoothly relative to each of the protrusions 123.

[0037] Please refer to Figure 1 , Figure 2 and Figure 3a The optical zoom module 1 further includes an image source seat 18 and an image source 181 (such as a liquid crystal display, LCD, but not limited thereto), the image source 181 is located in the image source seat 18 and is disposed on a side of the first lens barrel 12 adjacent to the image source side S2. When the operating element 13 is rotated, the oblique groove 131 causes the rib 111 of the second lens barrel 11 to move along the corresponding straight groove 121 and the oblique groove 131, so that the second lens unit 14 disposed in the second lens barrel 11 is moved, thereby adjusting the distance between the second lens unit 14 and the image source 181, that is, adjusting the imaging position of the optical zoom module 1.

[0038] Please refer to Figure 2 and Figure 3a The present invention can utilize the damping oil 16 provided between the first lens barrel 12 and the operating element to produce a damping effect on the operating element 13, so that the optical zoom module 1 has operational stability; and damping oil is provided between the convex rib 111 of the second lens barrel 11 and the straight groove 121 of the first lens barrel 12, so that the second lens barrel 11 has movement stability.

[0039] Please refer to Figure 1 and Figure 2 The optical zoom module 1 further includes an indicator cover 17, which is disposed on a side of the first lens barrel 12 close to the eye side S1 and can display the rotation scale of the operating element 13, that is, multiple vertical positions of the first lens unit 14 (for example Figure 2 The first vertical position P1 and the second vertical position P2 of the first lens unit are shown, but not limited thereto), so that the myopic user can quickly operate and use multiple imaging positions to compensate for the degree of myopia.

[0040] Figure 7 1 is a three-dimensional schematic diagram of a head-mounted electronic device according to an embodiment of the present invention. The head-mounted electronic device 2 includes a housing 20, the optical zoom module 1 and a control unit 22. The optical zoom module 1 is disposed in the housing 20. The control unit 22 is disposed in the housing 20 and is electrically connected to the optical zoom module 1. The control unit 22 may be a general-purpose processor, a microprocessor (MCU), an application processor (AP), a digital signal processor (DSP), a graphics processor (GPU), or a holographic processing unit (HPU), or any combination of the above processors, which may include various circuit logics for: providing data and image processing and calculation functions, and transmitting frame data (e.g., data representing text information, graphics, or images) to the image source (e.g., display) of the optical zoom module 1. The head-mounted electronic device 2 includes two optical zoom modules 1, which correspond to the left eye E1 and the right eye E2 respectively, so that the imaging position of the image source for the left eye E1 or the right eye E2 can be independently adjusted, that is, the appropriate myopia degree can be independently compensated for the left eye E1 or the right eye E2.

[0041] The optical zoom module 1 provided by the present invention can be applied to a zoom optical system according to visual requirements, and can be widely used in electronic imaging systems such as 3D (three-dimensional) image acquisition, virtual reality (VR) or augmented reality (AR) wearable displays, game consoles, monitor cameras, digital cameras, mobile devices, digital tablets, home electronic devices or automotive photography.

[0042] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An optical zoom module having a central axis and a radial direction perpendicular to the central axis, characterized in that: Also includes: A first lens barrel surrounds the central axis and includes a first barrel body, a straight groove and a protrusion, wherein the straight groove passes through the first barrel body, and the protrusion is located on an outer annular surface of the first barrel body; a second lens barrel, surrounding the central axis, disposed in the first lens barrel, and comprising a second barrel body and a convex rib, wherein the convex rib is located on an outer annular surface of the second barrel body; and An operating element surrounds the central axis and is arranged outside the first lens barrel, and includes a ring body, an oblique groove and a limiting sliding groove, wherein the oblique groove and the limiting sliding groove are both located on an inner ring surface of the ring body, the oblique groove and the vertical groove are stacked along the radial direction, the rib passes through the vertical groove and is positioned in the oblique groove, and the protrusion is located in the limiting sliding groove; wherein when the operating element is rotated, the oblique groove causes the rib of the second lens barrel to move along the corresponding vertical groove and the oblique groove, and at the same time the limiting sliding groove also moves relative to the protrusion.

2. The optical zoom module according to claim 1, wherein: The straight groove is parallel to the central axis and includes a first straight position and a second straight position relative to each other, the first straight position is adjacent to an image source side, the limiting sliding groove includes a first tail end and a second tail end relative to each other, the first tail end is adjacent to the oblique groove, when the operating element is rotated along a rotation direction, a force of the oblique groove causes the convex rib of the second lens barrel to move from the first straight position to the second straight position along the corresponding straight groove and the oblique groove, and at the same time the limiting sliding groove also moves relative to the protrusion so that the protrusion changes from a position adjacent to the first tail end to a position adjacent to the second tail end.

3. The optical zoom module according to claim 2, wherein: When the operating element is rotated in another rotation direction, another force of the oblique groove causes the convex rib of the second lens barrel to move from the second straight position to the first straight position along the corresponding straight groove and the oblique groove, and at the same time, the limiting sliding groove also moves relative to the protrusion so that the protrusion changes from a position adjacent to the second tail end side to a position adjacent to the first tail end side.

4. The optical zoom module according to claim 2, wherein: Further including: A first lens unit is disposed in the first lens barrel; And, a second lens unit is disposed in the second lens barrel.

5. The optical zoom module according to claim 4, wherein: It further comprises an image source, which is arranged on a side of the first lens barrel adjacent to the image source, wherein the second lens unit arranged in the second lens barrel is moved from the first straight position to the second straight position, thereby adjusting the distance between the second lens unit and the image source.

6. The optical zoom module according to claim 1, wherein: The number of the ribs, the number of the straight grooves and the number of the oblique grooves are three respectively, and the number of the limiting sliding grooves and the number of the protrusions are three respectively.

7. The optical zoom module according to claim 3, wherein: When the operating element rotates and the protrusion changes from contacting the first tail end of the limiting sliding groove to contacting the second tail end, the operating element rotates around the central axis at a maximum angle, and the maximum rotation angle is between 60 and 120 degrees.

8. The optical zoom module according to claim 1, wherein: The oblique groove and the limiting sliding groove do not penetrate the ring body.

9. The optical zoom module according to claim 1, wherein: A damping oil is arranged between the first lens barrel and the operating element; and the damping oil is arranged between the convex rib of the second lens barrel and the vertical groove of the first lens barrel.

10. A head-mounted electronic device, characterized in that: include: a housing; The optical zoom module according to any one of claims 1 to 9, disposed in the housing; as well as A control unit is disposed in the housing and electrically connected to the optical zoom module.

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