Lens group adjusting mechanism and lens group

Abstract

The utility model discloses a lens group adjustment mechanism and lens group, lens group adjustment mechanism includes: lens group body, interval adjustment subassembly, interval adjustment subassembly includes lens barrel, and lens group body sets up in the lens barrel at least one part, and lens group body can move along the central axis of lens barrel to adjust the position of lens group body in the first direction, coaxial adjustment subassembly, coaxial adjustment subassembly includes mounting seat, first adjusting part and second adjusting part, and the lens barrel is connected with mounting seat, and first adjusting part passes through mounting seat and the lens barrel abuts in the second direction to lock lens group body in the second direction, and second adjusting part passes through mounting seat and the lens barrel abuts in the third direction to lock lens group body in the third direction, wherein, second direction, third direction all are vertically arranged with the first direction. The utility model discloses a lens group adjustment mechanism can realize the multidimensional adjustment of lens group body, simplifies the operation process, improves the assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical lens performance adjustment technology, and in particular to a lens group adjustment mechanism and a lens group. Background Technology

[0002] Currently, the market demands increasingly higher performance from optical lenses. As lens optical performance improves, the assembly precision requirements for lens groups will also increase.

[0003] With the rapid development of fields such as smartphones, autonomous driving, security monitoring, medical imaging, and industrial inspection, the market's requirements for the imaging quality of optical lenses are constantly increasing. As lens optical performance improves, the demand for assembly precision in multiple lens groups also increases. During assembly, coaxiality errors and lens spacing deviations within the lens group can affect the final image quality.

[0004] In related technologies, the assembly of multiple lens groups can only be adjusted in a single direction, such as adjusting the coaxiality or spacing of multiple lens groups. It is difficult to achieve multi-dimensional adjustment, resulting in the assembly accuracy failing to meet the optical performance of the lens groups. In addition, in existing technologies, the coaxiality or spacing of multiple lens groups can be adjusted by means of machinery and equipment. However, the operation process is cumbersome, the equipment debugging is complicated, and the assembly time is increased. Utility Model Content

[0005] This invention aims to solve at least one of the aforementioned technical problems in the prior art. Therefore, the purpose of this invention is to provide a lens group adjustment mechanism that enables multi-dimensional adjustment of the lens group body, simplifies the operation process, and improves assembly efficiency.

[0006] This utility model also proposes a lens group having the above-mentioned lens group adjustment mechanism.

[0007] The lens group adjustment mechanism according to a first aspect embodiment of the present invention includes: The lens group itself; A spacing adjustment assembly includes a lens barrel, at least a portion of which is disposed within the lens barrel. The lens group body is movable along the central axis of the lens barrel to adjust the position of the lens group body in a first direction. A coaxial adjustment assembly includes a mounting base, a first adjustment member, and a second adjustment member. The lens barrel is connected to the mounting base. The first adjustment member passes through the mounting base along a second direction and abuts against the lens barrel to lock the lens assembly body in the second direction. The second adjustment member passes through the mounting base along a third direction and abuts against the lens barrel to lock the lens assembly body in the third direction. The second direction and the third direction are both perpendicular to the first direction.

[0008] The lens group adjustment mechanism according to the embodiment of this utility model has at least the following beneficial effects: the lens group body can move along the central axis of the lens barrel, and the position of the lens group body in the first direction can be adjusted, thereby adjusting the distance between two adjacent lens group bodies. At the same time, the first adjustment member and the second adjustment member lock the lens group body in the second direction and the third direction upward respectively, thereby adjusting the position of the lens group body in the second direction and the third direction upward, so that the optical axes of multiple lens group bodies are coaxially arranged. This utility model can realize multi-dimensional adjustment of the lens group body through the distance adjustment component and the coaxial adjustment component, and does not require the use of machinery and equipment to adjust the distance or coaxiality of multiple lens group bodies, simplifying the operation process, improving assembly efficiency, and meeting the optical performance requirements of the lens group body.

[0009] According to some embodiments of the present invention, the lens group body includes a base and a connecting portion connected to the base, the lens barrel is provided with a first mounting hole arranged along the first direction, and the connecting portion is disposed in the first mounting hole.

[0010] According to some embodiments of the present invention, a first thread is provided on the outer side of the connecting part, and a second thread is provided on the inner wall of the first mounting hole. The first thread and the second thread cooperate to facilitate the movement of the lens group body along the central axis of the lens barrel.

[0011] According to some embodiments of the present invention, the spacing adjustment assembly further includes a locking ring, which is sleeved on the outside of the connecting portion. The inner wall of the locking ring is provided with a third thread, which cooperates with the first thread. The locking ring is used to abut against the lens barrel to limit the position of the lens group body.

[0012] According to some embodiments of the present invention, the lens barrel includes a head and a tail connected to the head, a first mounting hole is disposed in the head, the tail is provided with a second mounting hole communicating with the first mounting hole, the diameter of the first mounting hole is larger than the diameter of the second mounting hole, and a first limiting step is formed between the first mounting hole and the second mounting hole. An extension is provided on the side of the connecting portion away from the base portion, and a second limiting step is provided between the extension portion and the connecting portion. The first limiting step is used to abut against the second limiting step to limit the lens group body.

[0013] According to some embodiments of the present utility model, the mounting base is provided with a third mounting hole arranged along the first direction, the tail is disposed in the third mounting hole, the mounting base is provided with a first adjustment hole arranged along the second direction, the first adjustment hole communicates with the third mounting hole to divide the first adjustment hole into a first hole position and a second hole position; The first adjusting member includes a first adjusting part, a first elastic part, and a first stopping part. The first adjusting part is disposed in the first hole and abuts against the tail. The first adjusting part can move along the central axis of the first hole to adjust the position of the lens barrel in the second direction. Both the first elastic part and the first stop part are disposed in the second hole. One end of the first elastic part abuts against the tail, and the other end of the first elastic part abuts against the first stop part.

[0014] According to some embodiments of the present invention, a fourth thread is provided on the outer side of the first adjusting part, and a fifth thread is provided on the inner wall of the first hole. The fourth thread and the fifth thread cooperate to facilitate the movement of the first adjusting part within the first hole.

[0015] According to some embodiments of the present invention, the mounting base is provided with a second adjustment hole arranged along the third direction, and the second adjustment hole communicates with the third mounting hole to divide the second adjustment hole into a third hole position and a fourth hole position; The second adjusting member includes a second adjusting part, a second elastic part, and a second stop part. The second adjusting part is disposed in the third hole and abuts against the tail. The second adjusting part can move along the central axis in the third hole to adjust the position of the lens barrel in the third direction. Both the second elastic part and the second stop part are disposed in the fourth hole. One end of the second elastic part abuts against the tail, and the other end of the second elastic part abuts against the second stop part.

[0016] According to some embodiments of the present invention, a sixth thread is provided on the outer side of the second adjusting part, and a seventh thread is provided on the inner wall of the third hole. The sixth thread and the seventh thread cooperate to facilitate the movement of the second adjusting part within the third hole.

[0017] According to some embodiments of the present invention, the diameter of the second mounting hole is greater than the width of the tail portion.

[0018] According to some embodiments of the present invention, it further includes a pressing assembly, wherein the head is provided with a first connecting groove, the mounting base is provided with a second connecting groove, and the pressing assembly passes through the first connecting groove and cooperates with the second connecting groove to connect the lens barrel to the mounting base.

[0019] According to some embodiments of the present invention, the pressing assembly includes a pressing attachment and a third elastic element. One end of the pressing attachment is disposed in the first connecting groove, and the other end of the pressing attachment is connected to the second connecting groove. The third elastic element is sleeved on the outer side of the portion of the pressing attachment located in the first connecting groove.

[0020] According to some embodiments of the present invention, the portion of the head near the mounting base is provided with a connecting hole, the connecting hole communicates with the first connecting groove, the diameter of the connecting hole is smaller than the diameter of the first connecting groove, a third limiting step is formed between the connecting hole and the first connecting groove, one end of the third elastic member abuts against the third limiting step, and the other end of the third elastic member abuts against the pressure attachment.

[0021] According to some embodiments of the present invention, the pressing attachment includes a first pressing part, a second pressing part, and a third pressing part connected in sequence. The first pressing part is disposed in the first connecting groove, and the diameter of the second pressing part is smaller than the diameter of the connecting hole, so as to facilitate the adjustment of the position of the mounting base in the second direction and the third direction. The third elastic element is sleeved on the outside of the second pressing part, and the third pressing part is connected to the second connecting groove.

[0022] According to some embodiments of the present invention, an eighth thread is provided on the outer side of the third pressing part, and a ninth thread is provided on the inner wall of the second connecting groove. The eighth thread and the ninth thread cooperate to facilitate the movement of the pressing part within the second connecting groove.

[0023] According to some embodiments of the present invention, a fourth limiting step is formed between the first pressing part and the second pressing part, and the third elastic member abuts against the fourth limiting step.

[0024] According to some embodiments of the present invention, a fifth limiting step is formed between the third pressing part and the second pressing part, and the fifth limiting step is used to abut against the mounting base to limit the pressing part.

[0025] The lens group according to the second aspect of the present invention includes the lens group adjustment mechanism of the first aspect of the present invention.

[0026] The lens group according to the embodiments of the present invention has at least the following beneficial effects: it eliminates the need to adjust the spacing or coaxiality of multiple lens groups with the aid of machinery and equipment, simplifies the operation process, improves assembly efficiency, and meets the optical performance requirements of the lens group.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the lens group adjustment mechanism according to an embodiment of the present invention; Figure 2 This is a front view of the lens group adjustment mechanism according to an embodiment of the present invention; Figure 3 for Figure 2 Sectional view at point AA; Figure 4 for Figure 2 Sectional view at point BB; Figure 5 This is an exploded view of the lens group adjustment mechanism according to an embodiment of the present utility model; Figure 6 This is a right view of the lens group adjustment mechanism according to an embodiment of the present invention; Figure 7 for Figure 6 Sectional view at CC; Figure 8 This is a schematic diagram of the structure of the lens group body according to an embodiment of the present utility model; Figure 9 This is a schematic diagram of the structure of the lens barrel according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the mounting base according to an embodiment of the present utility model; Figure 11 This is an exploded view of the pressing component in an embodiment of the present invention.

[0029] Reference numerals: 100, lens group body; 110, base; 120, connecting part; 130, extension part; 140, second limiting step; 200. Spacing adjustment assembly; 210. Lens barrel; 211. First mounting hole; 212. Head; 2121. First connecting groove; 2122. Connecting hole; 2123. Third limiting step; 213. Tail end; 214. First limiting step; 215. Second mounting hole; 220. Locking ring; 300. Coaxial adjustment assembly; 310. Mounting base; 311. Third mounting hole; 312. First adjustment hole; 3121. First hole position; 3122. Second hole position; 313. Second adjustment hole; 3131. Third hole position; 3132. Fourth hole position; 314. Second connecting groove; 320. First adjusting member; 321. First adjusting part; 322. First elastic part; 323. First stop part; 330. Second adjusting member; 331. Second adjusting part; 332. Second elastic part; 333. Second stop part; 400, Press-fit assembly; 410, Press-fit attachment; 411, First press-fit part; 412, Second press-fit part; 413, Third press-fit part; 414, Fourth limiting step; 415, Fifth limiting step; 420, Third elastic element. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Reference Figure 1 , Figure 2 The first aspect of this utility model provides a lens group adjustment mechanism, including a lens group body 100, a spacing adjustment component 200, a coaxial adjustment component 300, and a pressing component 400.

[0036] Reference Figure 2 , Figure 3 In some embodiments, the spacing adjustment assembly 200 includes a lens barrel 210, at least a portion of the lens group body 100 is disposed within the lens barrel 210, and the lens group body 100 is movable along the central axis of the lens barrel 210 to adjust the position of the lens group body 100 in a first direction; the coaxial adjustment assembly 300 includes a mounting base 310, a first adjustment member 320 and a second adjustment member 330, the lens barrel 210 is connected to the mounting base 310, the first adjustment member 320 passes through the mounting base 310 in a second direction and abuts against the lens barrel 210 to lock the lens group body 100 in the second direction; the second adjustment member 330 passes through the mounting base 310 in a third direction and abuts against the lens barrel 210 to lock the lens group body 100 in the third direction, wherein the second direction and the third direction are both perpendicular to the first direction.

[0037] Specifically, the lens group body 100 can move along the central axis of the lens barrel 210, and the position of the lens group body 100 in the first direction can be adjusted, thereby adjusting the spacing between two adjacent lens group bodies 100. The first adjusting member 320 and the second adjusting member 330 respectively lock the lens group body 100 in the second direction and the third direction upward, thereby adjusting the position of the lens group body 100 in the second direction and the third direction upward, so that the optical axes of multiple lens group bodies 100 are coaxially arranged. This utility model can realize multi-dimensional adjustment of the lens group body 100 through the spacing adjustment component 200 and the coaxial adjustment component 300, and does not require the use of machinery to adjust the spacing or coaxiality of multiple lens group bodies 100, simplifying the operation process, improving assembly efficiency, and meeting the optical performance requirements of the lens group body 100.

[0038] It should be noted that the first direction refers to the optical axis direction of the lens assembly body 100, as shown in the reference. Figure 1 The first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction (opposite direction).

[0039] In some embodiments, multiple lens group adjustment mechanisms are arranged sequentially along a first direction, thereby arranging multiple lens group bodies 100 sequentially along the first direction to facilitate the optical performance of the lens group. Each lens group adjustment mechanism's lens group body 100 can adjust the distance between itself and adjacent lens group bodies 100 through its spacing adjustment component 200. Each lens group adjustment mechanism's lens group body 100 can be adjusted through its coaxial adjustment component 300 to make the optical axes of the multiple lens group bodies 100 coaxially arranged.

[0040] Reference Figure 3 , Figure 8 In some embodiments, the lens group body 100 includes a base 110 and a connecting portion 120 connected to the base 110. The lens barrel 210 is provided with a first mounting hole 211 disposed along a first direction. The connecting portion 120 is disposed in the first mounting hole 211. The lens group body 100 can move along the first direction to adjust the length of the portion of the connecting portion 120 located in the first mounting hole 211, thereby adjusting the spacing between two adjacent lens group bodies 100.

[0041] In some embodiments, a first thread is provided on the outer side of the connecting portion 120, and a second thread is provided on the inner wall of the first mounting hole 211. The first thread and the second thread engage to facilitate the movement of the lens group body 100 along the central axis of the lens barrel 210. Specifically, rotating the lens group body 100 engages the first thread on the connecting portion 120 with the second thread in the first mounting hole 211, causing the lens group body 100 to move closer to or further away from the lens barrel 210 in a first direction, thereby adjusting the distance between two adjacent lens group bodies 100. The distance between two adjacent lens group bodies 100 can be adjusted simply by rotating the lens group body 100, eliminating the need for an additional drive mechanism and simplifying the operation process.

[0042] Reference Figure 3 , Figure 8 In some embodiments, the spacing adjustment assembly 200 further includes a locking ring 220, which is sleeved on the outside of the connecting portion 120. The inner wall of the locking ring 220 is provided with a third thread, which cooperates with the first thread. The locking ring 220 is used to abut against the end of the lens barrel 210 to limit the lens group body 100, thereby preventing the lens group body 100 from rotating and thus determining the position of the lens group body 100 in the first direction.

[0043] Specifically, rotating the locking ring 220 causes it to move away from the lens barrel 210, thereby releasing the locking ring 220 and preventing it from contacting the lens barrel 210. At this point, the lens body can rotate to adjust its position, avoiding displacement and jamming caused by the locking ring 220 locking during the adjustment process, ensuring the smoothness of the adjustment process. Then, rotating the lens group body 100 causes it to move closer to or further away from the lens barrel 210, adjusting the lens group body 100 to the first preset position. Next, rotating the locking ring 220 in the opposite direction causes it to move to contact the lens barrel 210, generating axial pressure and forming a mechanical self-lock, preventing the lens group body 100 from rotating or displacing due to external forces, and ensuring the positional accuracy of the lens group body 100 after adjustment in the first direction.

[0044] Reference Figure 3 , Figure 5 In some embodiments, the lens barrel 210 includes a head 212 and a tail 213 connected to the head 212. A first mounting hole 211 is disposed in the head 212, and the tail 213 is provided with a second mounting hole 215 communicating with the first mounting hole 211. The diameter of the first mounting hole 211 is larger than the diameter of the second mounting hole 215. A first limiting step 214 is formed between the first mounting hole 211 and the second mounting hole 215. An extension 130 is provided on the side of the connecting portion 120 away from the base 110. A second limiting step 140 is provided between the extension 130 and the connecting portion 120. The first limiting step 214 is used to abut against the second limiting step 140 to limit the lens group body 100, thereby limiting the adjustment range of the lens group body 100 and preventing the lens group body 100 from being over-adjusted in the first direction. When the lens assembly body 100 moves toward the tail 213 of the lens barrel 210, the second limiting step 140 can stop rotating the lens assembly body 100 when it touches the first limiting step 214. This can help the assembly personnel judge whether the lens assembly body 100 has reached the limit position and avoid lens collisions caused by over-adjustment.

[0045] Reference Figure 3 In some embodiments, the mounting base 310 is provided with a third mounting hole 311 arranged along the first direction, the tail 213 of the lens barrel 210 is disposed in the third mounting hole 311, and the diameter of the second mounting hole 215 is greater than the width of the tail 213, so as to facilitate the adjustment of the position of the lens barrel 210 in the second direction and the third direction.

[0046] In some other embodiments, a lens group body 100 is provided on the side of the mounting base 310 away from the tail 213 of the lens barrel 210, that is, a lens group body 100 is provided on both sides of the mounting base 310 along the first direction. The distance between the two lens group bodies 100 is adjusted by the distance adjustment component 200 and adjusted by the coaxial adjustment component 300 so that the optical axes of the two lens group bodies 100 are coaxially set.

[0047] Reference Figure 3 , Figure 4 , Figure 10 In some embodiments, the mounting base 310 is provided with a first adjustment hole 312 arranged along the second direction. The first adjustment hole 312 communicates with the third mounting hole 311 to divide the first adjustment hole 312 into a first hole position 3121 and a second hole position 3122. The first adjustment member 320 includes a first adjustment part 321, a first elastic part 322 and a first stop part 323. The first adjustment part 321 is disposed in the first hole position 3121 and abuts against the tail 213. The first adjustment part 321 can move along the central axis of the first hole position 3121 to adjust the position of the lens barrel 210 in the second direction. In addition, the first elastic part 322 and the first stop part 323 are both disposed in the second hole position 3122. One end of the first elastic part 322 abuts against the tail 213 and the other end of the first elastic part 322 abuts against the first stop part 323.

[0048] During adjustment, the first stop 323 remains in the position of the second hole 3122, and the first adjustment part 321 is moved to the desired position within the first hole 3121. Under the elastic action of the first elastic member, the first elastic member provides a force to the tail 213 of the lens barrel 210, so that the tail 213 of the lens barrel 210 always remains in contact with the first adjustment part 321, thereby enabling the lens barrel 210 to move with the first adjustment part 320, thereby causing the lens barrel 210 to drive the lens group body 100 to move, thereby adjusting the position of the lens group body 100 in the second direction.

[0049] In some embodiments, a fourth thread is provided on the outer side of the first adjustment part 321, and a fifth thread is provided on the inner wall of the first hole 3121, with the fourth thread engaging with the fifth thread. During adjustment, the first adjustment part 321 is rotated, causing it to move within the first hole 3121. By adjusting the position of the first adjustment part 321 within the first hole 3121, the position of the lens assembly body 100 in the second direction can be adjusted, simplifying the operation process.

[0050] In some embodiments, the first elastic element is configured as a spring. When the first adjusting part 321 rotates towards the lens barrel 210, the first elastic part 322 is compressed and stores elastic potential energy. When the first adjusting part 321 rotates out in the opposite direction, the first elastic element pushes the tail 213 of the lens barrel 210 to move accordingly through elastic force, thereby achieving bidirectional adjustment capability. Of course, in actual design, the structure of the first elastic element can be designed according to actual needs.

[0051] Reference Figure 4 , Figure 10 In some embodiments, the mounting base 310 is provided with a second adjustment hole 313 disposed along a third direction. The second adjustment hole 313 communicates with the third mounting hole 311 to divide the second adjustment hole 313 into a third hole position 3131 and a fourth hole position 3132. The second adjustment member 330 includes a second adjustment part 331, a second elastic part 332, and a second stop part 333. The second adjustment part 331 is disposed in the third hole position 3131 and abuts against the tail 213. The second adjustment part 331 can move along the central axis within the third hole position 3131 to adjust the position of the lens barrel 210 in a third direction. In addition, the second elastic part 332 and the second stop part 333 are both disposed in the fourth hole position 3132. One end of the second elastic part 332 abuts against the tail 213, and the other end of the second elastic part 332 abuts against the second stop part 333.

[0052] During adjustment, the second stop 333 remains in the fourth hole 3132, and the second adjustment part 331 is moved to the desired position in the third hole 3131. Under the elastic action of the second elastic member, the second elastic member provides force to the tail 213 of the lens barrel 210, so that the tail 213 of the lens barrel 210 always keeps in contact with the second adjustment part 331, thereby enabling the lens barrel 210 to move with the second follower first adjustment part 320, thereby enabling the lens barrel 210 to drive the lens group body 100 to move, thereby adjusting the position of the lens group body 100 in the third direction.

[0053] In some embodiments, a sixth thread is provided on the outer side of the second adjustment part 331, and a seventh thread is provided on the inner wall of the third hole 3131, with the sixth thread and the seventh thread engaging. During adjustment, the second adjustment part 331 is rotated, causing it to move within the third hole 3131. By adjusting the position of the second adjustment part 331 within the third hole 3131, the position of the lens assembly body 100 in a third direction can be adjusted, simplifying the operation process.

[0054] In some embodiments, the second elastic element is configured as a spring. When the second adjusting part 331 rotates towards the lens barrel 210, the second elastic part 332 is compressed and stores elastic potential energy. When the second adjusting part 331 rotates out in the opposite direction, the second elastic element pushes the tail 213 of the lens barrel 210 to move accordingly through elastic force, thereby achieving bidirectional adjustment capability. Of course, in actual design, the structure of the second elastic element can be designed according to actual needs.

[0055] Reference Figure 6 , Figure 7 In some embodiments, the head 212 of the lens barrel 210 is provided with a first connecting groove 2121, and the mounting base 310 is provided with a second connecting groove 314. The pressing assembly 400 passes through the first connecting groove 2121 and engages with the second connecting groove 314 to connect the lens barrel 210 and the mounting base 310, eliminating the need for complex alignment processes and improving assembly efficiency.

[0056] Reference Figure 5 , Figure 7 In some embodiments, the press attachment assembly 400 includes a press attachment 410 and a third elastic member 420. One end of the press attachment 410 is disposed in the first connecting groove 2121, and the other end of the press attachment 410 is connected to the second connecting groove 314. The third elastic member 420 is sleeved on the outer side of the portion of the press attachment 410 located in the first connecting groove 2121. The third elastic member 420 can provide a force to the lens barrel 210 along the first direction, so that the central axis of the lens barrel 210 is parallel to the first direction, preventing the lens group body 100 from tilting and ensuring the optical performance of the lens group body 100.

[0057] Reference Figure 7 , Figure 9 In some embodiments, the head 212 of the lens barrel 210 near the mounting base 310 is provided with a connecting hole 2122, which communicates with the first connecting groove 2121. The diameter of the connecting hole 2122 is smaller than the diameter of the first connecting groove 2121. A third limiting step 2123 is formed between the connecting hole 2122 and the first connecting groove 2121. One end of the third elastic member 420 abuts against the third limiting step 2123, and the other end of the third elastic member 420 abuts against the pressure attachment 410, thereby limiting the second elastic member within the first connecting groove 2121. When the pressure attachment 410 passes through the connecting hole 2122 and connects to the mounting base 310, one end of the third elastic member 420 is blocked by the third limiting step 2123, while the other end of the third elastic member 420 is abutted by the pressure attachment 410, preventing the elastic member from dislodging from the first connecting groove 2121 during adjustment or vibration.

[0058] Reference Figure 5 , Figure 7In some embodiments, the pressure attachment 410 includes a first pressure attachment portion 411, a second pressure attachment portion 412, and a third pressure attachment portion 413 connected in sequence. The first pressure attachment portion 411 is disposed within the first connecting groove 2121. The diameter of the second pressure attachment portion 412 is smaller than the diameter of the connecting hole 2122, providing adjustment space to facilitate adjustment of the position of the mounting base 310 in the second direction and the third direction. Furthermore, a third elastic member 420 is sleeved on the outside of the second pressure attachment portion 412 to ensure that the elastic force of the third elastic member 420 always acts on the lens barrel 210 in the first direction. The third pressure attachment portion 413 is connected to the second connecting groove 314, thereby limiting the lens barrel 210 in the first direction and preventing the lens barrel 210 from tilting, which would cause the lens assembly body 100 to tilt.

[0059] In some embodiments, the outer side of the third pressing part 413 is provided with an eighth thread, and the inner wall of the second connecting groove 314 is provided with a ninth thread. The eighth thread and the ninth thread cooperate to facilitate the movement of the pressing part 410 within the second connecting groove 314. By rotating the pressing part 410, the depth of the third pressing part 413 extending into the second connecting groove 314 is adjusted to ensure that the force exerted by the pressing assembly 400 on the lens barrel 210 is within a reasonable range, which facilitates the adjustment of the position of the lens group body 100 in the first and second directions.

[0060] It should be noted that when adjusting the optical axes of multiple lens group bodies 100 to be coaxial, the third pressing part 413 does not need to be fully inserted into the second connecting groove 314, that is, the pressing attachment 410 does not need to be fully tightened, so as to facilitate the adjustment of the position of the lens group body 100 in the second direction and the third direction; after the adjustment is completed, the pressing attachment 410 is tightened to determine the position of the lens group body 100.

[0061] Reference Figure 5 , Figure 11 In some embodiments, the diameter of the first pressing portion 411 is larger than the diameter of the second pressing portion 412. A fourth limiting step 414 is formed between the first pressing portion 411 and the second pressing portion 412. The third elastic member 420 abuts against the fourth limiting step 414 to prevent the third elastic member 420 from dislodging from the pressing portion 410. Furthermore, the fourth limiting step 414 cooperates with the third limiting step 2123 inside the head 212 of the lens barrel 210 to ensure that the elastic member is always in the working position, thereby ensuring that the elastic force of the third elastic member 420 always acts on the lens barrel 210 in the first direction.

[0062] Reference Figure 5 , Figure 11In some embodiments, the diameter of the second pressing part 412 is larger than the diameter of the third pressing part 413, and a fifth limiting step 415 is formed between the third pressing part 413 and the second pressing part 412. The fifth limiting step 415 is used to abut against the mounting base 310 to limit the pressing part 410 and prevent the pressing part 410 from being over-adjusted.

[0063] In some embodiments, the third elastic element 420 is configured as a spring. Of course, in actual design, the structure of the third elastic element 420 can be designed according to actual needs.

[0064] Reference Figure 5 In some embodiments, four pressure attachment components 400 may be provided, and the four pressure attachment components 400 are respectively provided at the four corners of the lens barrel 210, which can further improve the connection stability between the lens barrel 210 and the mounting base 310 and prevent the lens barrel 210 from tilting and causing the lens group body 100 to tilt.

[0065] When it is necessary to adjust the spacing of the lens group, the following steps are included: First, rotate the locking ring 220 so that it moves away from the lens barrel 210, thereby loosening the locking ring 220; The second step is to rotate the lens group body 100 so that the lens group body 100 moves to the desired position along the first direction, thereby adjusting the position of the lens group body 100 relative to the lens barrel 210, thereby changing the distance between the lens group body 100 and adjacent lens group bodies 100. Third, after the lens group body 100 is adjusted to a suitable position along the first direction, the locking ring 220 is rotated so that the locking ring 220 moves along the side close to the lens barrel 210 until it abuts against the lens barrel 210, thereby locking the locking ring 220.

[0066] When it is necessary to adjust the coaxiality of the lens group, the following steps are included: First, rotate the pressure attachment 410 so that the pressure attachment 410 moves to a set position away from the mounting base 310; The second step is to rotate the first adjustment part 321 of the first adjustment member 320 to adjust the position of the first adjustment part 321 in the first adjustment hole 312 of the mounting base 310, and under the action of the first elastic part 322 and the first stop part 323, change the position of the lens barrel 210 in the second direction, thereby moving the lens group body 100 and adjusting the position of the lens group body 100 in the second direction. Third, rotate the second adjustment part 331 of the second adjustment member 330 to adjust the position of the second adjustment part 331 in the second adjustment hole 313 of the mounting base 310. Under the action of the second elastic part 332 and the second stop part 333, the position of the lens barrel 210 in the third direction is changed, thereby the lens barrel 210 drives the lens group body 100 to move, thereby adjusting the position of the lens group body 100 in the third direction.

[0067] A second aspect of this utility model provides a lens group, including the lens group adjustment mechanism of the first aspect of this utility model.

[0068] The lens group of this utility model embodiment does not require the use of machinery to adjust the spacing or coaxiality of the lens group, simplifying the operation process, improving assembly efficiency, and meeting the optical performance requirements of the lens group.

[0069] It should be noted that during the adjustment of the spacing and coaxiality of the lens group, the optical performance of the lens group can be observed to determine whether the adjustment is in place.

[0070] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A lens group adjustment mechanism, characterized in that, include: The lens group itself; A spacing adjustment assembly includes a lens barrel, at least a portion of which is disposed within the lens barrel. The lens group body is movable along the central axis of the lens barrel to adjust the position of the lens group body in a first direction. A coaxial adjustment assembly includes a mounting base, a first adjustment member, and a second adjustment member. The lens barrel is connected to the mounting base. The first adjustment member passes through the mounting base along a second direction and abuts against the lens barrel to lock the lens assembly body in the second direction. The second adjustment member passes through the mounting base along a third direction and abuts against the lens barrel to lock the lens assembly body in the third direction. The second direction and the third direction are both perpendicular to the first direction.

2. The lens group adjustment mechanism according to claim 1, characterized in that, The lens group body includes a base and a connecting part connected to the base. The lens barrel is provided with a first mounting hole arranged along the first direction, and the connecting part is disposed in the first mounting hole.

3. The lens group adjustment mechanism according to claim 2, characterized in that, The spacing adjustment assembly also includes a locking ring, which is sleeved on the outside of the connecting part and is used to abut against the lens barrel to limit the position of the lens group body.

4. The lens group adjustment mechanism according to claim 2, characterized in that, The lens barrel includes a head and a tail connected to the head. The first mounting hole is disposed in the head, and the tail is provided with a second mounting hole communicating with the first mounting hole. The diameter of the first mounting hole is larger than the diameter of the second mounting hole, and a first limiting step is formed between the first mounting hole and the second mounting hole. An extension is provided on the side of the connecting portion away from the base portion, and a second limiting step is provided between the extension portion and the connecting portion. The first limiting step is used to abut against the second limiting step to limit the lens group body.

5. The lens group adjustment mechanism according to claim 4, characterized in that, The mounting base is provided with a third mounting hole arranged along the first direction, and the tail is disposed in the third mounting hole. The mounting base is provided with a first adjustment hole arranged along the second direction. The first adjustment hole communicates with the third mounting hole to divide the first adjustment hole into a first hole position and a second hole position. The first adjusting member includes a first adjusting part, a first elastic part, and a first stopping part. The first adjusting part is disposed in the first hole and abuts against the tail. The first adjusting part can move along the central axis of the first hole to adjust the position of the lens barrel in the second direction. Both the first elastic part and the first stop part are disposed in the second hole. One end of the first elastic part abuts against the tail, and the other end of the first elastic part abuts against the first stop part.

6. The lens group adjustment mechanism according to claim 5, characterized in that, The mounting base is provided with a second adjustment hole arranged along the third direction, and the second adjustment hole communicates with the third mounting hole to divide the second adjustment hole into a third hole position and a fourth hole position; The second adjusting member includes a second adjusting part, a second elastic part, and a second stop part. The second adjusting part is disposed in the third hole and abuts against the tail. The second adjusting part can move along the central axis in the third hole to adjust the position of the lens barrel in the third direction. Both the second elastic part and the second stop part are disposed in the fourth hole. One end of the second elastic part abuts against the tail, and the other end of the second elastic part abuts against the second stop part.

7. The lens group adjustment mechanism according to claim 4, characterized in that, It also includes a pressing assembly, wherein the head is provided with a first connecting groove and the mounting base is provided with a second connecting groove, and the pressing assembly passes through the first connecting groove and engages with the second connecting groove to connect the lens barrel to the mounting base.

8. The lens group adjustment mechanism according to claim 7, characterized in that, The pressing assembly includes a pressing attachment and a third elastic element. One end of the pressing attachment is disposed in the first connecting groove, and the other end of the pressing attachment is connected to the second connecting groove. The third elastic element is sleeved on the outer side of the portion of the pressing attachment located in the first connecting groove.

9. The lens group adjustment mechanism according to claim 8, characterized in that, The portion of the head near the mounting base is provided with a connecting hole, which communicates with the first connecting groove. The diameter of the connecting hole is smaller than the diameter of the first connecting groove. A third limiting step is formed between the connecting hole and the first connecting groove. One end of the third elastic member abuts against the third limiting step, and the other end of the third elastic member abuts against the pressure attachment; and / or, The pressure attachment includes a first pressure attachment part, a second pressure attachment part, and a third pressure attachment part connected in sequence. The first pressure attachment part is disposed in the first connecting groove. The diameter of the second pressure attachment part is smaller than the diameter of the connecting hole, so as to facilitate the adjustment of the position of the mounting base in the second direction and the third direction. The third elastic element is sleeved on the outside of the second pressing part, and the third pressing part is connected to the second connecting groove.

10. A lens assembly, characterized in that, Includes the lens group adjustment mechanism as described in any one of claims 1 to 9.

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