Telescopic zoom lens

Abstract

The invention discloses a telescopic zoom lens, comprising a shell, a zoom device and a focusing assembly. A mounting channel is formed in the shell, one end of the mounting channel is an object side end, and the other end is an image side end. The zoom device is located in the mounting channel, and the zoom device comprises a first zoom assembly and a mounting seat which are sequentially arranged near the object side end. The first zoom assembly is elastically mounted on the mounting seat along the depth direction of the mounting channel. The first zoom assembly comprises a first zoom lens barrel and a first zoom lens arranged in the first zoom lens barrel. The focusing assembly comprises a focusing lens barrel and a focusing lens arranged in the focusing lens barrel. The focusing lens barrel and the first zoom lens barrel are adjustable along the depth direction of the mounting channel. When the first zoom assembly is bumped by the outside, the picture taken at this time becomes blurred from clear due to the elastic effect. After detecting the picture change, the control element inside the mobile phone controls the first zoom assembly and the focusing assembly to retract to the same thickness as the mobile phone, so as to play a protective role.

Description

Technical Field

[0001] The present invention relates to the technical field of zoom lenses, and in particular to a telescopic zoom lens. Background Art

[0002] Currently, mobile phones sold on the market are equipped with multiple optical camera modules, including the common periscope-structured zoom lens. This structure introduces a right-angle reflective prism, an optical element, which reflects the incident light perpendicular to the thickness of the mobile phone. This lengthens the total length of the zoom lens, expands the range of movement of the zoom lens group, and thus increases the optical zoom ratio. However, in the periscope-structured zoom lens, the diameter of the lens is limited by the thickness of the mobile phone, making the lens diameter relatively small, which reduces the light flux of the zoom optical module and affects the image quality. Summary of the invention

[0003] The main purpose of the present invention is to provide a telescopic zoom lens, which can adjust the focal length by telescopic means and is not limited by the thickness of the mobile phone. However, when the mobile phone is shooting, for example, in a crowded or narrow space, the overall thickness of the lens after being extended is greater than the thickness of the mobile phone, and it is easy to be bumped and scratched, causing damage.

[0004] To achieve the above object, the present invention provides a telescopic zoom lens, comprising:

[0005] A housing, wherein a mounting channel is formed in the housing, one end of the mounting channel is an object side end, and the other end of the mounting channel is an image side end;

[0006] a zoom device, located in the installation channel, the zoom device comprising a first zoom assembly and a mounting seat arranged in sequence near the object side end, the first zoom assembly being elastically mounted on the mounting seat along the depth direction of the installation channel, the first zoom assembly comprising a first zoom lens barrel and a first zoom lens arranged in the first zoom lens barrel; and,

[0007] A focusing assembly comprises a focusing lens barrel and a focusing lens arranged in the focusing lens barrel. The focusing lens barrel and the first zoom lens barrel are adjustable along the depth direction of the installation channel to adjust the shooting focal length of the lens.

[0008] Optionally, the zoom device comprises an elastic member structure, and the elastic member structure is located between the first zoom lens barrel and the mounting seat, so as to enable the first zoom lens barrel to be elastically mounted on the mounting seat.

[0009] Optionally, the end surface of the mounting seat close to the image side end is provided with a mounting hole, and the first zoom lens barrel is provided with a first groove corresponding to the mounting hole;

[0010] A guide rod is further provided between the mounting seat and the first zoom lens barrel. The guide rod extends along the depth direction of the mounting channel. The guide rod passes through the mounting hole and extends into the first groove.

[0011] Optionally, the elastic member structure comprises an annular spring sheet, and a positioning hole is provided on an end surface of the annular spring sheet close to the image side end;

[0012] The guide rod passes through the installation hole and the positioning hole in sequence and is installed in the first groove.

[0013] Optionally, the guide rod, the first groove, the mounting hole, and the positioning hole correspond one-to-one to form a guide group, and a plurality of the guide groups are provided and are arranged at intervals along the circumference of the annular spring sheet.

[0014] Optionally, the focusing assembly further includes a voice coil motor, which is located between the focusing barrel and the housing, and a driving end of the voice coil motor is drivingly connected to the focusing barrel to drive the focusing barrel to move along a depth direction of the installation channel.

[0015] Optionally, the telescopic zoom lens further includes a telescopic driving assembly, and the telescopic driving assembly includes:

[0016] a driving cylinder, the driving cylinder being rotatably installed in the installation channel along the depth direction of the installation channel and sleeved on the outer surface of the first zoom lens barrel, and a driving inclined groove being provided on the side wall of the driving cylinder; and,

[0017] A driving column, one end of which is disposed on the outer surface of the mounting seat, and the other end of which is slidably mounted in the driving inclined groove;

[0018] The driving tube rotates to drive the first zoom lens barrel to move along the depth direction of the installation channel.

[0019] Optionally, the zoom device includes an elastic member structure, which includes a plurality of sleeve members correspondingly sleeved on the outer surfaces of the plurality of driving columns, and the outer surfaces of the plurality of sleeve members are against the inner wall surfaces of the corresponding driving inclined grooves.

[0020] Optionally, the telescopic drive assembly further includes:

[0021] a driving motor having a driving shaft extending in a depth direction of the installation channel; and

[0022] The gear set comprises a first gear and a second gear meshing with each other, wherein the first gear is arranged on the driving shaft, and the second gear is arranged on the driving cylinder.

[0023] Optionally, the telescopic drive assembly also includes a fixed cylinder located in the mounting channel, the fixed cylinder is located between the drive cylinder and the first zoom lens barrel, the outer surface of the fixed cylinder is provided with a guide hole extending along the depth direction of the mounting channel, the guide hole is used for the drive column to pass through, so as to limit the rotation of the drive column.

[0024] Optionally, the zoom device further includes:

[0025] A second zoom assembly is located in the installation channel, the second zoom assembly includes a second zoom lens barrel and a second zoom lens disposed in the second zoom lens barrel; and

[0026] A third zoom assembly is located in the installation channel, and the third zoom assembly includes a third zoom lens barrel and a third zoom lens arranged in the third zoom lens barrel;

[0027] Among them, the first zoom assembly, the mounting seat, the second zoom assembly, the focusing assembly and the third zoom assembly are arranged in sequence from the object side end to the image side end, and the first zoom assembly, the second zoom lens barrel, the focusing lens barrel and the third zoom lens barrel are adjustable along the depth direction of the mounting channel.

[0028] In the technical solution of the present invention, the focusing lens barrel and the first zoom lens barrel are adjustably arranged along the depth direction of the mounting channel, so that the distance between the first zoom lens and the focusing lens can be adjusted, the focal length can be adjusted and focused, and the imaging quality can be improved. At the same time, the first zoom assembly is elastically mounted on the mounting seat. When the orientation of the first zoom lens barrel is adjusted so that the first zoom assembly partially protrudes from the shell, when the first zoom assembly is bumped by the outside, the first zoom assembly moves toward the image side end, and the distance between the first zoom assembly and the mounting seat changes, that is, the distance of the first zoom lens barrel relative to the focusing lens barrel changes. At this time, the captured picture changes from clear to blurred. After detecting the picture change, the corresponding control element inside the mobile phone automatically controls the first zoom assembly and the focusing assembly to return to the initial position, that is, retract to the same thickness as the mobile phone, to play a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1A cross-sectional schematic diagram of an embodiment of a telescopic zoom lens provided by the present invention;

[0031] Figure 2 for Figure 1 A three-dimensional schematic diagram of the cooperation between the first zoom assembly and the mounting seat;

[0032] Figure 3 for Figure 2 A three-dimensional schematic diagram of a partial section;

[0033] Figure 4 for Figure 2 Schematic diagram of the cross section along AA;

[0034] Figure 5 for Figure 1 A three-dimensional schematic diagram of the middle sleeve member.

[0035] Description of Figure Numbers:

[0036] Label name Label name 100 Telescopic zoom lens 24 The third zoom component 1 case 3 Focusing components 11 Installation channel 31 Focus lens 11a Object side 4 Elastic structure 11b Image side 41 Guide rod 21 First zoom component 42 Sleeve parts 211 First zoom lens barrel 51 Drive cylinder 212 First zoom lens 52 Drive column 22 Mounting Seat 53 Drive motor 23 Second zoom unit 54 Fixed cylinder

[0037] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] Currently, all mobile phones sold on the market are equipped with multiple optical camera modules. The optical system of traditional mobile phone camera modules is designed to be fixed-focus, and later zoom modules with movable lens groups were developed. The thickness of mobile phones is limited to a certain extent, which makes the movement range of movable lenses relatively limited. In order to overcome the disadvantage that the movement range of movable lens groups is limited by the thickness of mobile phones, researchers have proposed a zoom lens with a periscope structure. This structure introduces a right-angle reflecting prism as an optical element. The reflecting prism reflects the incident light to be transmitted perpendicular to the thickness of the mobile phone, lengthens the total length of the zoom lens, expands the movement range of the zoom lens group, and thus increases the optical zoom ratio. However, in the periscope structure, the diameter of the lens is limited by the thickness of the mobile phone, making the lens diameter relatively small, which reduces the light flux of the zoom optical module and affects the imaging quality.

[0042] In order to achieve a larger zoom ratio and higher light flux, the present invention proposes a new zoom lens structure for mobile phones, which effectively improves the amount of light entering and image clarity, and has better performance under dark light conditions. Figures 1 to 5 An embodiment of the telescopic zoom lens provided by the present invention.

[0043] Please refer to Figure 1 to Figure 2 The telescopic zoom lens 100 includes a shell 1, a zoom device, and a focusing assembly 3. A mounting channel 11 is formed in the shell 1, one end of the mounting channel 11 is an object side end 11a, and the other end is an image side end 11b; the zoom device is located in the mounting channel 11, and the zoom device includes a first zoom assembly 21 and a mounting seat 22 which are sequentially arranged near the object side end 11a, the first zoom assembly 21 is elastically mounted on the mounting seat 22 along the depth direction of the mounting channel 11, the first zoom assembly 21 includes a first zoom lens barrel 211 and a first zoom lens 212 arranged in the first zoom lens barrel 211; the focusing assembly 3 includes a focusing lens barrel and a focusing lens 31 arranged in the focusing lens barrel, the focusing lens barrel and the first zoom lens barrel 211 are adjustable along the depth direction of the mounting channel 11, and are used to adjust the shooting focal length of the lens.

[0044] In the technical solution of the present invention, the focusing lens barrel and the first zoom lens barrel 211 are adjustable along the depth direction of the mounting channel 11, so that the distance between the first zoom lens 212 and the focusing lens 31 can be adjusted, so as to adjust the focal length and focus, and improve the quality of imaging. At the same time, the first zoom assembly 21 is elastically mounted on the mounting seat 22. When the orientation of the first zoom lens barrel 211 is adjusted so that the first zoom assembly 21 partially protrudes from the housing 1, when the first zoom assembly 21 is hit by the outside, the first zoom assembly 21 moves toward the image side end 11b, and the distance between the first zoom assembly 21 and the mounting seat 22 changes, that is, the distance of the first zoom lens barrel 211 relative to the focusing lens barrel changes. At this time, the captured picture changes from clear to blurred. After detecting the picture change, the corresponding control element inside the mobile phone automatically controls the first zoom assembly 21 and the focusing assembly 3 to return to the initial position, that is, retract to the same thickness as the mobile phone, so as to play a protective role.

[0045] Further, in order to realize the elastic installation of the first zoom assembly 21 relative to the mounting seat 22, please refer to Figure 3 The zoom device includes an elastic member structure 4, which is located between the first zoom lens barrel 211 and the mounting seat 22, and is used to elastically mount the first zoom lens barrel 211 on the mounting seat 22. When the side of the first zoom lens barrel 211 close to the object side end 11a is bumped, the first zoom lens barrel 211 drives the first zoom lens 212 to be pressed toward the mounting seat 22, and at this time, the elastic member structure 4 is compressed, the focal length changes, and the image quality becomes blurred, which is convenient for installation and setting, and does not affect the zoom and focus. When the first zoom lens barrel 211 and the focus lens barrel are relatively adjusted, they can move together with the mounting seat 22. It can effectively prevent the first zoom assembly 21 from being damaged by pressure, falling, and collision.

[0046] It should be noted that, when the external force is eliminated, the elastic member structure 4 rebounds, so that the first zoom lens barrel 211 returns to the initial position, which does not affect the next shooting adjustment.

[0047] For easy guidance, please refer to Figure 4In this embodiment, the end surface of the mounting seat 22 close to the image side end 11b is provided with a mounting hole, and the first zoom lens barrel 211 is provided with a first groove corresponding to the mounting hole; a guide rod 41 is further provided between the mounting seat 22 and the first zoom lens barrel 211, and the guide rod 41 extends along the depth direction of the mounting channel 11, and the guide rod 41 passes through the mounting hole and extends into the first groove. The provision of the guide rod 41 allows the first zoom lens barrel 211 to always move along the guide rod 41 during the elastic movement, thereby ensuring stability and preventing the first zoom lens barrel 211 from being offset relative to the mounting seat 22 during elastic compression and rebound.

[0048] Furthermore, in one embodiment of the present invention, the elastic member structure 4 includes an annular spring sheet, and a positioning hole is provided on the end surface of the annular spring sheet close to the image side end 11b; the guide rod 41 passes through the mounting hole and the positioning hole in sequence and is installed in the first groove. In this way, the annular spring sheet and the mounting seat 22 and the first zoom lens barrel 211 are connected in sequence through the guide rod 41, and the annular spring sheet is placed offset. The arrangement of the annular spring sheet is convenient for matching and installation, and the force at each location is uniform during the elastic movement of the first zoom lens barrel 211.

[0049] If necessary, elastic installation can also be achieved by providing a plurality of compression springs or rubber parts spaced apart along the circumferential direction, which will not be described in detail here.

[0050] Furthermore, in order to ensure the stability of positioning and the firmness of long-term use, the guide rod 41, the first groove, the mounting hole, and the positioning hole correspond to each other as a guide group, and the guide group is provided with a plurality of groups and is arranged at intervals along the circumference of the annular spring sheet. In this embodiment, the guide group is provided with 3 groups, and the triangular positioning method is more stable.

[0051] In order to achieve the adjustment of the focusing barrel, in the present invention, the focusing assembly 3 also includes a voice coil motor, which is located between the focusing barrel and the housing 1, and the driving end of the voice coil motor is connected to the focusing barrel to drive the focusing barrel to move along the depth direction of the mounting channel 11. The voice coil motor is a special form of direct drive motor. It has the characteristics of simple structure, small size, high speed, high acceleration and fast response. Its working principle is that when an energized coil is placed in a magnetic field, a force will be generated, and the magnitude of the force is proportional to the current applied to the coil. The voice coil motor is a simple electromagnetic device without direction conversion and high reliability. It solves the problems of durable wear and motion noise of conventional optical zoom lenses, better meets market demand and improves user experience.

[0052] In order to achieve the adjustment of the zoom device, in the present invention, the telescopic zoom lens 100 further includes a telescopic driving assembly, which includes a driving cylinder 51 and a driving cylinder 51: the driving cylinder 51 is rotatably installed in the installation channel 11 along the depth direction of the installation channel 11, and is sleeved on the outer surface of the first zoom lens barrel 211, and a driving inclined groove is provided on the side wall of the driving cylinder 51; one end of the driving column 52 is provided on the outer surface of the mounting seat 22, and the other end of the driving column 52 is slidably installed in the driving inclined groove; wherein, the driving cylinder 51 rotates to drive the first zoom lens barrel 211 to move along the depth direction of the installation channel 11. The cooperation mode of the driving cylinder 51 and the driving column 52 is similar to the cam groove drive, and the lifting and lowering is realized by the reciprocating motion of the driving cylinder 51, and the motion is stable.

[0053] Furthermore, in order to realize the reciprocating rotation of the driving tube 51, the telescopic driving assembly further includes a driving motor 53 and a gear set, wherein the driving motor 53 has a driving shaft extending along the depth direction of the installation channel 11; the gear set includes a first gear and a second gear meshing with each other, wherein the first gear is arranged on the driving shaft, and the second gear is arranged on the driving tube 51. The motor drives the gears to rotate, and the telescopic speed of the first zoom lens barrel 211 can be adjusted by adjusting the rotation speed of the driving motor 53.

[0054] If necessary, it can also be driven by a screw rod, which is not explained in detail here.

[0055] In other embodiments, please refer to Figure 5 The zoom device includes an elastic member structure 4, and the elastic member structure 4 includes a plurality of sleeve members 42 correspondingly sleeved on the outer surfaces of the plurality of driving columns 52, and the outer surfaces of the plurality of sleeve members 42 abut against the inner wall surfaces of the corresponding driving inclined grooves. When the plurality of driving columns 52 slide and cooperate with the driving barrel, the sleeve member 42 moves accordingly. When the first zoom assembly 21 is hit by the outside, the first zoom assembly 21 and the mounting seat 22 both move toward the image side end 11b. At this time, the driving column 52 applies a force toward the image side end 11b relative to the driving inclined groove. At this time, the sleeve member 42 is squeezed, causing a slight change in the relative position of the first zoom lens barrel 211 relative to the focusing lens barrel. At this time, the captured picture becomes blurred from clear. After detecting the picture change, the corresponding control element inside the mobile phone automatically controls the first zoom assembly 21 and the focusing assembly 3 to return to the initial position, that is, retract to the same thickness as the mobile phone, to play a protective role.

[0056] The sleeve member 42 is columnar, and an annular protrusion is convexly provided on the outer surface of the side end facing the center direction of the driving cylinder 51. The annular protrusion is hollowed out, and the two ends of the annular protrusion are respectively abutted against the side surface of the mounting seat 22 and the outer surface of the driving cylinder 51 to prevent the sleeve member 42 from falling out during use.

[0057] In order to ensure that the mounting seat 22 drives the first zoom lens 212 to always move linearly along the depth direction of the mounting channel 11 without deflection, in this embodiment, the telescopic drive assembly further includes a fixed cylinder 54 located in the mounting channel 11, the fixed cylinder 54 is located between the drive cylinder 51 and the first zoom lens barrel 211, and the outer surface of the fixed cylinder 54 is provided with a guide hole extending along the depth direction of the mounting channel 11, the guide hole is used for the drive column 52 to pass through, so as to limit the rotation of the drive column 52. Thus, the movement stroke and movement path are limited by the guide hole, the structure is simple, and it is easy to install.

[0058] Further, the zoom device further comprises a second zoom assembly 23, a second zoom assembly 23, the second zoom assembly 23 is located in the installation channel 11, the second zoom assembly 23 comprises a second zoom lens barrel and a second zoom lens arranged in the second zoom lens barrel; the second zoom assembly 23 is located in the installation channel 11, and the third zoom assembly 24 comprises a third zoom lens barrel and a third zoom lens arranged in the third zoom lens barrel; wherein the first zoom assembly 21, the mounting seat 22, the second zoom assembly 23, the focus assembly 3 and the third zoom assembly 24 are arranged in sequence from the object side end 11a to the image side end 11b, and the first zoom assembly 21, the second zoom lens barrel, the focus lens barrel and the third zoom lens barrel are adjustable along the depth direction of the installation channel 11. The linkage mode of multiple zoom assemblies enables the telescopic zoom lens 100 to have a fast focusing speed, a large amount of light, a more prominent imaging effect, and improve the user experience.

[0059] In the present invention, the first zoom assembly 21, the second zoom assembly 23 and the third zoom assembly 24 can all be driven and adjusted by the cooperation of the driving cylinder 51 and the driving column 52. Three groups of driving bevel grooves with different extension trajectories are arranged on the driving cylinder 51, which effectively reduces the number of driving elements and the volume of the module, thereby reducing the difficulty and requirements of controlling multiple mobile units of the zoom lens group, and achieving coordinated linkage of multiple mobile units.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A telescopic zoom lens, characterized in that: include: A housing, wherein a mounting channel is formed in the housing, one end of the mounting channel is an object side end, and the other end of the mounting channel is an image side end; A zoom device is located in the installation channel, the zoom device includes a first zoom assembly and a mounting seat which are sequentially arranged near the object side end, the first zoom assembly is elastically mounted on the mounting seat along the depth direction of the installation channel, the first zoom assembly includes a first zoom lens barrel and a first zoom lens arranged in the first zoom lens barrel; as well as, A focusing assembly, the focusing assembly comprising a focusing lens barrel and a focusing lens arranged in the focusing lens barrel, the focusing lens barrel and the first zoom lens barrel being adjustable along the depth direction of the installation channel for adjusting the shooting focal length of the lens; The zoom device comprises an elastic member structure, wherein the elastic member structure is located between the first zoom lens barrel and the mounting seat, and is used to elastically mount the first zoom lens barrel on the mounting seat; When the side of the first zoom lens barrel close to the object side end is bumped, the first zoom lens barrel drives the first zoom lens to be squeezed toward the mounting seat. At this time, the elastic member structure is compressed, the focal length changes, and the captured image quality becomes blurred. After detecting the picture change, the corresponding control element inside the mobile phone automatically controls the first zoom assembly and the focus assembly to return to the initial position, that is, retracts to the same thickness as the mobile phone.

2. The telescopic zoom lens according to claim 1, wherein: The end surface of the mounting seat close to the image side end is provided with a mounting hole, and the first zoom lens barrel is provided with a first groove corresponding to the mounting hole; A guide rod is further provided between the mounting seat and the first zoom lens barrel. The guide rod extends along the depth direction of the mounting channel. The guide rod passes through the mounting hole and extends into the first groove.

3. The telescopic zoom lens according to claim 2, wherein: The elastic member structure comprises an annular spring sheet, and a positioning hole is provided on the end surface of the annular spring sheet close to the image side end; The guide rod passes through the installation hole and the positioning hole in sequence and is installed in the first groove.

4. The telescopic zoom lens according to claim 1, wherein: The focusing assembly also includes a voice coil motor, which is located between the focusing lens barrel and the housing. The driving end of the voice coil motor is drivingly connected to the focusing lens barrel to drive the focusing lens barrel to move along the depth direction of the installation channel.

5. The telescopic zoom lens according to claim 1, wherein: The telescopic zoom lens further includes a telescopic drive assembly, and the telescopic drive assembly includes: A driving cylinder, the driving cylinder is rotatably installed in the installation channel along the depth direction of the installation channel, and is sleeved on the outer surface of the first zoom lens barrel, and a driving inclined groove is provided on the side wall of the driving cylinder; and A driving column, one end of which is disposed on the outer surface of the mounting seat, and the other end of which is slidably mounted in the driving inclined groove; The driving tube rotates to drive the first zoom lens barrel to move along the depth direction of the installation channel.

6. The telescopic zoom lens according to claim 5, wherein: The telescopic drive assembly also includes: a driving motor having a driving shaft extending in a depth direction of the installation channel; and The gear set comprises a first gear and a second gear meshing with each other, wherein the first gear is arranged on the driving shaft, and the second gear is arranged on the driving cylinder.

7. The telescopic zoom lens according to claim 5, wherein: The zoom device includes an elastic member structure, which includes a plurality of sleeve members correspondingly sleeved on the outer surfaces of the plurality of driving columns, and the outer surfaces of the plurality of sleeve members abut against the inner wall surfaces of the corresponding driving inclined grooves.

8. The telescopic zoom lens according to claim 5, wherein: The telescopic driving assembly also includes a fixed cylinder located in the mounting channel, the fixed cylinder is located between the driving cylinder and the first zoom lens barrel, the outer surface of the fixed cylinder is provided with a guide hole extending along the depth direction of the mounting channel, the guide hole is used for the driving column to pass through, so as to limit the rotation of the driving column.

9. The telescopic zoom lens according to claim 1, wherein: The zoom device also includes: A second zoom assembly is located in the installation channel, the second zoom assembly includes a second zoom lens barrel and a second zoom lens disposed in the second zoom lens barrel; and A third zoom assembly is located in the installation channel, and the third zoom assembly includes a third zoom lens barrel and a third zoom lens arranged in the third zoom lens barrel; Among them, the first zoom assembly, the mounting seat, the second zoom assembly, the focusing assembly and the third zoom assembly are arranged in sequence from the object side end to the image side end, and the first zoom assembly, the second zoom lens barrel, the focusing lens barrel and the third zoom lens barrel are adjustable along the depth direction of the mounting channel.

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