Lens aligning device of lens

Abstract

The utility model relates to the technical field of lenses, and particularly discloses a lens aligning device of a lens, which comprises a multi-stage lens barrel composed of a plurality of single-stage lens frames. The single-stage glasses frames are detachably connected with one another; lens grooves are formed in the single-stage glasses frames; a plurality of lens limiting columns are uniformly arranged in the lens groove at intervals according to angles; a threaded hole is formed in the single-stage lens frame and penetrates through the lens groove from the outer surface of the single-stage lens frame; lenses are arranged in the lens grooves of the single-stage glasses frames; the lens limiting columns are telescopic pieces; the threaded hole is provided with a compression piece; and one end of the compression piece is in contact with the side part of the lens. According to the lens aligning device, the elastic lens limiting column is adopted to support the lens, and the axis of the lens is adjusted through the compression piece. By means of the arrangement, the stability of the axis of the lens in the adjusting process is guaranteed, and the risk that the lens is damaged due to vibration or collision is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lenses, in particular to a lens centering device for a lens. Background Art

[0002] In the field of photography, a lens is generally composed of many lenses. This lens is not a single lens, but is composed of multiple lenses with different shapes, sizes and materials. Through precise processing and combination, they form a whole. These lenses are arranged according to certain rules and methods, and can accurately focus or reflect light, so as to achieve the optical effect we want. Such lenses are widely used in the fields of photography, film, microscopes, telescopes, etc. Its design principle and manufacturing process are also important research contents in the field of optics.

[0003] However, in actual use, when different lenses are combined, their coaxiality is also different. As a key component for imaging, the coincidence degree of the axis of the lens directly affects the imaging quality. And the adjustment of the axis of the lens is the key step to ensure the stable performance and clear imaging of the lens. If there is a deviation between the optical axis of the lens and its basic central axis, it will cause deviation of light propagation inside the lens, thereby affecting the clarity and accuracy of imaging. Then an axis adjustment device is needed to achieve precise adjustment of the small angle and position of the lens, and ensure that the installation position of the lens is accurate.

[0004] In the patent "Lens barrel, lens and lens centering device" (publication number: CN209590375U, hereinafter referred to as the prior art 1), a centering device is disclosed. In the prior art 1, a plurality of bearing platforms are arranged in the lens barrel, and a plurality of stoppers are arranged. The bearing surface inside the stopper can be used for movably arranging the centering lens. Since a gap is formed between two adjacent stoppers, an external driver can be connected to the centering lens through the gap to drive the centering lens to move, so that the central axis of the centering lens and the central axis of the fixed lens can be located or approximately located on the same optical axis. In the prior art 1, a driver is used to adjust the axis of the lens, and a plurality of drivers are arranged at different angles. Generally, in the adjustment of the coaxiality of the axis of the lens, the gap itself is not too large and only fine adjustment is required. However, in the prior art 1, a driver is used for adjustment. Using a driver in the prior art 1 may result in a large driving force, resulting in low adjustment accuracy. And using a driver for adjustment is likely to damage the lens. And there is hard contact around the lens, and the lens cannot be protected. Content of the Utility Model

[0005] In view of this, an embodiment of the utility model provides a lens centering device for a lens, which is used to solve the problems of poor adjustment accuracy of the coaxiality of the axis of the lens and easy damage to the lens in the prior art.

[0006] A lens centering device for a lens, comprising a multi-stage lens barrel; the multi-stage lens barrels are composed of a number of single-stage lens frames; each of the single-stage lens frames is detachably connected; a lens groove is provided in the single-stage lens frame; a number of lens limiting posts are evenly arranged at angular intervals in the lens groove; a number of threaded holes are evenly arranged at angular intervals on the single-stage lens frame, and the threaded holes penetrate from the outer surface of the single-stage lens frame to the lens groove; a lens is provided in the lens groove of the single-stage lens frame, and the lens is wrapped by a protective pad; the lens limiting posts are elastic members; an alignment mechanism is provided on the body of the single-stage lens frame, and the alignment mechanism contacts the outer surface of the protective pad through the threaded hole.

[0007] Preferably, the alignment mechanism includes a first alignment roller, a second alignment roller, and a third alignment roller; both ends of the first alignment roller, the second alignment roller, and the third alignment roller are respectively connected to a rotating handle and a lens limiting post.

[0008] Preferably, the position of the threaded hole is adapted to the position of the lens limiting post; the first alignment roller, the second alignment roller, and the third alignment roller pass through the threaded hole and are arranged inside the lens limiting post; after the first alignment roller, the second alignment roller, and the third alignment roller are connected to the lens limiting post, they contact the protective pad through the lens limiting post.

[0009] Preferably, the position of the threaded hole is arranged between adjacent lens limiting posts; the first alignment roller, the second alignment roller, and the third alignment roller pass through the threaded hole and contact the protective pad.

[0010] Preferably, a pressing block is provided at one end of the first alignment roller, the second alignment roller, and the third alignment roller in contact with the protective pad; the first alignment roller, the second alignment roller, and the third alignment roller contact the protective pad through the pressing block.

[0011] Preferably, the number of the threaded holes is adapted to the alignment mechanism.

[0012] Preferably, the outer circumference of the lens contacts the ends of a number of the lens limiting posts through the protective pad; the lens is supported by the ends of a number of the lens limiting posts.

[0013] Preferably, the cross-sectional area of the pressing block is larger than the cross-sectional areas of the first alignment roller, the second alignment roller, and the third alignment roller.

[0014] Preferably, when the first alignment roller, the second alignment roller, and the third alignment roller rotate into the threaded hole, the extrusion force received by the lens increases, and the position of the lens is limited by some of the lens limiting posts and the first alignment roller, the second alignment roller, and the third alignment roller.

[0015] Preferably, the first centering roller, the second centering roller, and the third centering roller rotate out of the threaded hole, the extrusion force on the lens is reduced, and the position of the lens is defined by some of the lens limiting posts and the first centering roller, the second centering roller, the third centering roller or by all of the lens limiting posts.

[0016] Preferably, a basic lens frame and a connecting member are respectively provided at both ends of the multi-stage lens barrel; both the basic lens frame and the connecting member are detachably connected to the multi-stage lens barrel.

[0017] The lens centering device of a lens provided by the present invention has the following beneficial effects:

[0018] This lens centering device uses elastic lens limiting posts to support the lens and adjusts the axis of the lens through a compression member. This setting not only ensures the stability of the lens during rotation or adjustment, but also greatly reduces the risk of damage to the lens due to vibration or collision. In addition, by adjusting the screwing in or out of the compression member, the adjustment range can be controlled, and the axis position of the lens can be accurately controlled, thereby correcting various deviations when the lenses are used in combination and ensuring the imaging quality of the camera. The outer periphery of the lens is contacted by a telescopic member, which can protect the movement of the lens and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, and all of these are within the protection scope of the present invention.

[0020] Figure 1 is a schematic diagram of the overall structure of a lens of a lens centering device;

[0021] Figure 2 is a schematic diagram of the structure of a lens centering device in a single-stage lens frame;

[0022] Figure 3 is a schematic diagram of the structure in Embodiment 3;

[0023] Figure 4 is a schematic diagram of the structure in Embodiment 2;

[0024] Figure 5 is a schematic diagram of the structure of a lens centering device of a lens;

[0025] Parts and numbers in the figure:

[0026] 100 - Multi - stage lens barrel, 110 - Single - stage lens frame, 111 - Lens groove, 112 - Lens limit post, 113 - Threaded hole, 115 - Pressure block, 116 - Rotating handle, 117 - Lens, 118 - Protective pad, 121 - First centering roller, 122 - Second centering roller, 123 - Third centering roller;

[0027] 200 - Basic lens frame;

[0028] 300 - Connector. Specific embodiments

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements. If there is no conflict, the embodiments of the present utility model and the various features in the embodiments can be combined with each other, and all are within the protection scope of the present utility model.

[0030] Embodiment 1

[0031] Please refer to Figure 1 and Figure 2, an embodiment of the present utility model provides a lens centering device, which includes a multi-stage lens barrel 100; the multi-stage lens barrel 100 is composed of several single-stage lens frames 110; each of the single-stage lens frames 110 is detachably connected. The multi-stage lens barrel 100 is connected and composed of several single-stage lens frames 110 to form a complete overall lens barrel. Each individual single-stage lens frame 110 can also be a lens barrel. Each single-stage lens frame 110 can be disassembled and connected to other single-stage lens frames 110. Generally, both ends of the single-stage lens frame 110 are respectively provided with a thread groove and a thread, and are installed or disassembled through thread connection. This provides great convenience for the adjustment and maintenance of the lens, enhances the flexibility of the lens setting, and provides more shooting options for users.

[0032] A lens groove 111 is provided in the single-stage lens frame 110. Each single-stage lens frame 110 is provided with a lens groove 111. After installing the lens 117 through the lens groove 111, it can be used as an individual lens barrel and installed on a shooting device.

[0033] The multi-stage lens barrel 100 is composed of several single-stage lens frames 110; each of the single-stage lens frames 110 is detachably connected; a lens groove 111 is provided in the single-stage lens frame 110. A lens groove 111 is provided in the single-stage lens frame 110. Each single-stage lens frame 110 is provided with a lens groove 111. After installing the lens 117 through the lens groove 111, it can be used as an individual lens barrel and installed on a shooting device. In order to prevent the lens 117 from being damaged during installation, generally, a protective pad 118 for installation and protection is provided for the lens 117, and the lens 117 is installed and protected through the protective pad 118.

[0034] Please refer to Figure 1 , several lens limiting posts 112 are evenly provided in the lens groove 111 at angular intervals. Please refer to the figure. Several lens limiting posts 112 are evenly provided in the lens groove 111 at angular intervals. A number of lens limiting posts 112 are provided in the lens groove 111 to prevent a large gap from existing when the lens 117 is arranged in the lens groove 111, so that the lens 117 is damaged due to movement when the shooting device moves or vibrates, or the axis between the lenses 117 is offset from the optical axis due to movement, affecting the shooting effect. Through the lens limiting posts 112, the position of the lens 117 is restricted, so that the lens 117 will not be damaged or displaced, further ensuring the service life and use effect of the lens 117. At this time, the lens limiting posts 112 and the lens groove 111 are fixedly connected.

[0035] A plurality of threaded holes 113 are evenly arranged on the single-stage spectacle frame 110 at angular intervals. The threaded holes 113 penetrate from the outer surface of the single-stage spectacle frame 110 to the lens groove 111. The threaded holes 113 are arranged at positions between adjacent lens limiting posts 112 or at positions corresponding to adjacent lens limiting posts 112.

[0036] Please refer to Figure 1 , a lens 117 is arranged in the lens groove 111 of the single-stage spectacle frame 110, and the lens 117 is wrapped by a protective pad 118. Since the cost of the lens 117 is relatively high, in order to prevent the lens 117 from being damaged during installation, it is protected by setting the protective pad 118 and installed through the protective pad 118. The protective pad 118 has undergone special treatment and will not damage the lens 117 when contacting the lens 117.

[0037] The lens limiting post 112 is an elastic member. The lens limiting post 112 has the effects of elasticity and reset. After the lens 117 is installed in the lens groove 111 through the protective pad 118, the side of the protective pad 118 contacts the lens limiting post 112. Since the lens limiting post 112 has the effects of elasticity and reset, when the overall lens generates displacement in the lens groove 111, there will be no hard contact with the spectacle frame, achieving the effect of protecting the overall safety of the lens 117. And through the elasticity and reset of the lens limiting post 112, the position of the axis of the lens 117 will not change from the initial setting; even if it changes, it can be reset when the external force is removed.

[0038] Furthermore, please refer to Figure 5 , the lens limiting post 112 is made of rubber. Rubber not only has good elasticity, can provide necessary buffering when the lens 117 is displaced, and can change in length with extrusion to avoid damage caused by hard contact, but also enables the lens 117 to be adjusted. Moreover, rubber has strong wear resistance and corrosion resistance, which can ensure that the lens limiting post 112 maintains good performance during long-term use.

[0039] Please refer to Figure 1 , an alignment mechanism is arranged on the body of the single-stage spectacle frame 110, and the alignment mechanism contacts the outer surface of the protective pad 118 through the threaded hole 113. The alignment mechanism contacts the protective pad 118 of the lens 117 through the threaded hole 113, which can increase or decrease the pressure on the lens 117. By changing the pressure on the lens 117, the axis position of the lens can be adjusted so that it can be aligned with the optical axis, having a good shooting effect.

[0040] Embodiment 2

[0041] Please refer to Figure 4, an embodiment of the present utility model provides a lens centering device for a lens. The centering mechanism includes a first centering roller 121, a second centering roller 122, and a third centering roller 123. Both ends of the first centering roller 121, the second centering roller 122, and the third centering roller 123 are respectively connected to a rotating handle 116 and a lens limiting post 112, and the rotating handle 116 is fixedly connected to the first centering roller 121, the second centering roller 122, and the third centering roller 123. The number of the threaded holes 113 is adapted to the centering mechanism. The first centering roller 121, the second centering roller 122, and the third centering roller 123 are threadedly connected to the threaded holes 113.

[0042] Please refer to Figure 4 , at one end of the first centering roller 121, the second centering roller 122, and the third centering roller 123 away from the lens 117, there is a rotating handle 116 for easy operation. The existence of this rotating handle 116 enables the user to easily adjust the movement direction of the first centering roller 121, the second centering roller 122, and the third centering roller 123 by rotating it. Specifically, the user can, according to needs, rotate this rotating handle 116 to make the first centering roller 121, the second centering roller 122, and the third centering roller 123 rotate towards the direction close to the lens 117 or away from the lens 117. This makes the operation more convenient and also improves the flexibility of use.

[0043] Please refer to Figure 4 and Figure 1, in this embodiment, the centering mechanism includes three parts, which are respectively composed of the first centering roller 121, the rotating handle 116 and the lens limiting post 112, the second centering roller 122, the rotating handle 116 and the lens limiting post 112, and the second centering roller 122, the rotating handle 116 and the lens limiting post 112. At this time, the lens limiting post 112 cooperating with the centering mechanism is separated from the lens groove 111, and only the part cooperating with the centering mechanism is separated, and the rest is still fixed in the lens groove 111. Each part can be adjusted. The three parts are arranged at uniform angular intervals and adjusted in three directions respectively, so that the lens 117 can be adjusted to a correct position, and the adjustment range is relatively wide, and multi-position adjustment can be performed, so that the lens 117 will not deviate towards a certain angle. The centering mechanism drives the first centering roller 121, the second centering roller 122, and the third centering roller 123 to rotate by adjusting the rotating handle 116. The rotating handle 116 is fixedly connected to the first centering roller 121, the second centering roller 122, and the third centering roller 123. The first centering roller 121, the second centering roller 122, and the third centering roller 123 move towards or away from the lens 117. The position of the threaded hole 113 is adapted to the position of the lens limiting post 112. The first centering roller 121, the second centering roller 122, and the third centering roller 123 are arranged inside the lens limiting post 112 through the threaded hole 113.

[0044] When the centering mechanism moves towards the lens 117, both ends of the separated lens limiting post 112 are supported by the centering structure and the protective pad 118. The first centering roller 121, the second centering roller 122, and the third centering roller 123 rotate inward in the lens limiting post 112, pushing the lens limiting post 112 inward, so as to change the position of the lens 117. Further, since the lens limiting post 112 is an elastic part, if it rotates and cooperates with the first centering roller 121, the second centering roller 122, and the third centering roller 123 for a long time, it will be worn out and finally affect the centering accuracy. Therefore, a joint cylinder is provided at the position where the first centering roller 121, the second centering roller 122, and the third centering roller 123 are joined inside the lens limiting post 112. The first centering roller 121, the second centering roller 122, and the third centering roller 123 rotate in the joint cylinder, and the joint cylinder is fixedly connected to the lens limiting post 112, so that the lens limiting post 112 will not be worn. After the first centering roller 121, the second centering roller 122, and the third centering roller 123 are connected to the lens limiting post 112, they contact the protective pad 118 through the lens limiting post 112. At this time, the position of the lens 117 is limited and supported by the lens limiting post 112.

[0045] Further, please refer to Figure 4, the positions where the first centering roller 121, the second centering roller 122, and the third centering roller 123 are joined to the joint cylinder are provided with convex and concave arc surfaces to reduce their friction area.

[0046] Embodiment 3

[0047] Please refer to Figure 3 and Figure 1 , an embodiment of the present utility model provides a lens centering device. In this embodiment, a pressing block 115 is provided at one end where the first centering roller 121, the second centering roller 122, and the third centering roller 123 contact the protection pad 118. The number of the threaded holes 113 is adapted to the centering mechanism. The centering mechanism includes a first centering roller 121, a second centering roller 122, and a third centering roller 123. Both ends of the first centering roller 121, the second centering roller 122, and the third centering roller 123 are fixedly connected to the rotating handle 116 and the pressing block 115 respectively. The position of the threaded hole 113 is set at the position between adjacent lens limiting posts 112; the first centering roller 121, the second centering roller 122, and the third centering roller 123 pass through the threaded hole 113 and contact the protection pad 118. The first centering roller 121, the second centering roller 122, and the third centering roller 123 contact the protection pad 118 through the pressing block 115.

[0048] Please refer to Figure 3 , the first centering roller 121, the second centering roller 122, and the third centering roller 123 are threadedly connected to the threaded hole 113. The first centering roller 121, the second centering roller 122, and the third centering roller 123 move towards or away from the lens based on their threaded connection with the threaded hole 113. During this process, the first centering roller 121, the second centering roller 122, and the third centering roller 123 will be tightly joined to the threaded hole 113 through threaded connection to ensure their stability and reliability. At the same time, during the movement of the first centering roller 121, the second centering roller 122, and the third centering roller 123, they can effectively compress the lens to achieve the desired effect. The compression member can achieve precise control of the axis of the lens 117 through its threaded connection with the threaded hole 113, enabling it to approach or move away when needed, thus meeting various usage requirements.

[0049] The outer periphery of the lens 117 is in contact with the ends of several lens positioning posts 112 through the protective pad 118; the lens 117 is supported by the ends of several lens positioning posts 112. The lens 117 is in close contact with the end parts of several specific lens positioning posts 112, ensuring the stability and correct positioning of the lens 117. At the same time, the ends of these lens positioning posts 112 provide a firm support for the lens, enabling the lens 117 to remain stable during operation and preventing damage caused by vibration or improper operation. This setting utilizes the structural characteristics of the lens positioning posts 112, ensuring both the safety of the lens 117 and improving the overall reliability. In the peripheral area of the lens 117, this contact and support method is particularly important because this is the key area where the lens 117 bears force and stability. Through this setting, it can be ensured that the lens can maintain the best performance state under various working conditions, ensuring that the axis of the lens does not move and improving its shooting quality.

[0050] The cross-sectional area of the pressing block 115 is larger than the cross-sectional areas of the first centering roller 121, the second centering roller 122, and the third centering roller 123. The pressing block 115 is provided at the position adjacent to the lens at the ends of the first centering roller 121, the second centering roller 122, and the third centering roller 123; the main function of this pressing block 115 is to be in close contact with the protective pad 118 of the lens. The purpose of this setting is to increase the contact area between the first centering roller 121, the second centering roller 122, and the third centering roller 123 and the protective pad 118. If the contact area between the first centering roller 121, the second centering roller 122, and the third centering roller 123 and the protective pad 118 is small, the pressure on the lens 117 will be large. After a long time of use, it may cause damage to the protective pad 118 and the lens. By increasing the area of the pressing block 115, the contact area with the protective pad 118 of the lens 117 is increased, making the force on the protective pad 118 more uniform when the pressing block 115 compresses the protective pad 118, and it will not cause the possibility of local damage to the protective pad 118 and the lens due to the reduction of the force-bearing area on the lens.

[0051] Preferably, the first centering roller 121, the second centering roller 122, and the third centering roller 123 rotate into the threaded holes 113, the extrusion force on the lens 117 increases, and the position of the lens 117 is limited by some of the lens positioning posts 112 and the first centering roller 121, the second centering roller 122, and the third centering roller 123.

[0052] The first centering roller 121, the second centering roller 122, and the third centering roller 123 slowly enter the inside of the lens frame under the action of the rotation of the rotating handle 116. During this process, the first centering roller 121, the second centering roller 122, and the third centering roller 123 exert a certain squeezing pressure on the lens 117, causing the lens 117 to also compress some of the lens position-limiting posts 112, and the axis of the lens 117 also shifts. The pressure on some of the lens position-limiting posts 112 decreases, and the part of the lens 117 where the pressure decreases may lose the support of the lens position-limiting posts 112. During this process, a close fit is formed between the lens and the first centering roller 121, the second centering roller 122, the third centering roller 123, and the lens position-limiting posts 112, restricting the position of the lens 117. In this way, under the action of the first centering roller 121, the second centering roller 122, and the third centering roller 123, the axis of the lens 117 is accurately aligned with the optical axis inside the lens frame, providing a good environment for subsequent shooting work.

[0053] Preferably, the first centering roller 121, the second centering roller 122, and the third centering roller 123 rotate out of the threaded hole 113, the squeezing pressure on the lens 117 decreases, and the position of the lens 117 is limited by some of the lens position-limiting posts 112 and the first centering roller 121, the second centering roller 122, and the third centering roller 123 or by all of the lens position-limiting posts 112.

[0054] The first centering roller 121, the second centering roller 122, and the third centering roller 123 rotate out of the lens frame, the squeezing pressure on the lens 117 from the first centering roller 121, the second centering roller 122, and the third centering roller 123 decreases, and the position of the lens 117 is limited by some of the lens position-limiting posts 112 and the first centering roller 121, the second centering roller 122, and the third centering roller 123 or by all of the lens position-limiting posts 112.

[0055] The first centering roller 121, the second centering roller 122, and the third centering roller 123 slowly withdraw from the lens frame under the rotational drive of the rotating handle 116. During this process, as the centering mechanism withdraws, the force squeezing the lens 117 gradually decreases, and its axial position correspondingly shifts. During this process, the lens will achieve precise positioning of its position through the synergistic effect of some of the lens limiting rollers and the first centering roller 121, the second centering roller 122, and the third centering roller 123, or with the cooperation of all the lens limiting posts 112. This limiting effect ensures that the lens 117 maintains the correct posture and position during the process of withdrawing from the lens frame, preventing it from shifting or deforming during rotation, and ensuring that the adjusted axial position of the lens 117 maintains the correct posture. At both ends of the multi-stage lens barrel 100, a basic lens frame 200 and a connecting member 300 are respectively provided; both the basic lens frame 200 and the connecting member 300 are detachably connected to the multi-stage lens barrel 100.

[0056] The centering mechanism slowly withdraws from the lens frame under the rotational drive of the rotating handle 116. During this process, as the centering mechanism withdraws, the force squeezing the lens 117 gradually decreases, and its axial position correspondingly shifts. During this process, the lens 117 will achieve precise positioning of its position through the synergistic effect of some of the lens limiting posts 112 and the centering mechanism, or with the cooperation of all the lens limiting posts 112. This limiting effect ensures that the lens 117 maintains the correct posture and position during the process of aligning with the optical axis in the lens frame, preventing it from shifting or deforming during rotation, and ensuring the coincidence degree between the adjusted axial position of the lens 117 and the optical axis.

[0057] Furthermore, please refer to Figure 1 , mounting grooves are provided on all the lens limiting posts 112; the height of the mounting grooves is higher than the height of the protective pad 118 at the connection with the protective pad 118. Through the setting of the mounting grooves, the position of the lens 117 can be more stably restricted, so that it is restricted for the first time within the mounting grooves, and the height at the connection with the protective pad 118 is lower than the height of the mounting grooves, preferably adapted, so that the lens can be restricted within the mounting grooves.

[0058] Please refer to Figure 2, the two ends of the multi-stage barrel 100 are respectively provided with a basic lens frame 200 and a connecting member 300; both the basic lens frame 200 and the connecting member 300 are detachably connected to the multi-stage barrel 100. Specific components are respectively arranged at the two ends of the multi-stage barrel 100, and these components include the basic lens frame 200 and the connecting member 300. The design of these components and the multi-stage barrel 100 is a detachable connection, enabling them to be conveniently assembled or disassembled with the imaging device. This design improves the flexibility of the multi-stage barrel 100, allowing users to adjust or maintain it according to needs. This detachable connection method of the basic lens frame 200 and the connecting member 300 not only makes the multi-stage barrel 100 more convenient to use during the operation, but also improves its overall reliability and durability.

[0059] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lens centering device for a lens, characterized in that, It includes a multi-stage lens barrel (100); the multi-stage lens barrels (100) are composed of a number of single-stage lens frames (110); each of the single-stage lens frames (110) is detachably connected; A lens groove (120) is provided inside the single-stage lens frame (110); a number of lens limiting posts (112) are evenly arranged at angular intervals inside the lens groove (120); a number of threaded holes (113) are evenly arranged at angular intervals on the single-stage lens frame (110), and the threaded holes (113) are arranged to penetrate from the outer surface of the single-stage lens frame (110) to the lens groove (120); A lens (117) is provided inside the lens groove (120) of the single-stage lens frame (110), and the lens (117) is wrapped by a protective pad (118); the lens limiting posts (112) are elastic members; an alignment mechanism is provided on the body of the single-stage lens frame (110), and the alignment mechanism is in contact with the outer surface of the protective pad (118) through the threaded hole (113).

2. The lens centering device of a lens according to claim 1, characterized in that, The alignment mechanism includes a first alignment roller (121), a second alignment roller (122), and a third alignment roller (123); both ends of the first alignment roller (121), the second alignment roller (122), and the third alignment roller (123) are connected to a turning handle (116) and a lens limiting post (112) respectively.

3. The lens centering device of a lens according to claim 2, characterized in that, The position of the threaded hole (113) is adapted to the position of the lens limiting post (112); the first alignment roller (121), the second alignment roller (122), and the third alignment roller (123) pass through the threaded hole and are arranged inside the lens limiting post (112); after the first alignment roller (121), the second alignment roller (122), and the third alignment roller (123) are connected to the lens limiting post (112), they are in contact with the protective pad (118) through the lens limiting post (112).

4. A lens centering device for a lens according to claim 2, characterized in that The position of the threaded hole (113) is arranged between adjacent lens limiting posts (112); the first alignment roller (121), the second alignment roller (122), and the third alignment roller (123) pass through the threaded hole (113) and are in contact with the protective pad (118); A pressing block (115) is provided at one end of the first alignment roller (121), the second alignment roller (122), and the third alignment roller (123) that is in contact with the protective pad (118); the first alignment roller (121), the second alignment roller (122), and the third alignment roller (123) are in contact with the protective pad (118) through the pressing block (115).

5. A lens centering device for a lens according to any one of claims 2-4, characterized in that The number of the threaded holes (113) is adapted to the alignment mechanism.

6. The lens centering device of a lens according to claim 1, characterized in that, The outer periphery of the lens (117) is in contact with the ends of a number of the lens limiting posts (112) through the protective pad (118); the lens (117) is supported by the ends of a number of the lens limiting posts (112).

7. The lens centering device of a lens according to claim 4, characterized in that, The cross-sectional area of the pressing block (115) is larger than the cross-sectional area of the first alignment roller (121), the second alignment roller (122), and the third alignment roller (123).

8. A lens centering device for a lens according to any one of claims 2-4, characterized in that, The first self-aligning roller (121), the second self-aligning roller (122), and the third self-aligning roller (123) rotate into the threaded hole (113), the extrusion force applied to the lens (117) increases, and the position of the lens (117) is defined by some of the lens position-limiting posts (112), the first self-aligning roller (121), the second self-aligning roller (122), and the third self-aligning roller (123).

9. A lens centering device for a lens according to any one of claims 2-4, characterized in that, The first self-aligning roller (121), the second self-aligning roller (122), and the third self-aligning roller (123) rotate out of the threaded hole (113), the extrusion force applied to the lens (117) decreases, and the position of the lens (117) is defined by some of the lens position-limiting posts (112), the first self-aligning roller (121), the second self-aligning roller (122), and the third self-aligning roller (123) or by all of the lens position-limiting posts (112).

10. The lens centering device of a lens according to claim 1, characterized in that, A base frame (200) and a connector (300) are respectively provided at both ends of the multi-stage lens barrel (100); both the base frame (200) and the connector (300) are detachably connected to the multi-stage lens barrel (100).

Images