Lens group adjusting mechanism and lens group

Abstract

The invention discloses a lens group adjusting mechanism and a lens group. The lens group adjusting mechanism comprises a lens group body; the distance adjusting assembly comprises a lens barrel, at least one part of the lens group body is arranged in the lens barrel, and the lens group body can move along the central axis of the lens barrel so as to adjust the position of the lens group body in the first direction; the coaxial adjusting assembly comprises a mounting base, a first adjusting part and a second adjusting part, the lens cone is connected with the mounting base, and the first adjusting part penetrates through the mounting base in the second direction to abut against the lens cone so as to lock the lens group body in the second direction; the second adjusting part penetrates through the mounting base in the third direction to abut against the lens cone so as to lock the lens group body in the third direction, and the second direction and the third direction are both perpendicular to the first direction. According to the lens group adjusting mechanism, multi-dimensional adjustment of the lens group body can be realized, the operation process is simplified, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lens performance adjustment, and in particular to a lens group adjustment mechanism and a lens group. Background Art

[0002] Currently, the market requirements for optical lens performance are getting higher and higher. As the optical performance of lenses improves, the requirements for the assembly accuracy of lens groups will become higher.

[0003] With the rapid development of smartphones, autonomous driving, security monitoring, medical imaging, and industrial inspection, the market's demand for optical lens image quality continues to rise. As lens optical performance improves, the demand for assembly precision of multiple lens groups becomes even higher. During the assembly process, errors in lens coaxiality and lens spacing can affect the final image quality.

[0004] In the related art, the assembly of multiple lens groups can only be adjusted along a single direction. For example, only the coaxiality or spacing of the multiple lens groups can be adjusted, which makes it difficult to achieve multi-dimensional adjustment. As a result, the assembly accuracy cannot meet the optical performance of the lens group. In addition, in the existing art, there are also methods that use mechanical equipment to adjust the coaxiality or spacing of multiple lens groups. However, the operation process is cumbersome, the equipment debugging is complicated, and the assembly time is increased. Summary of the Invention

[0005] The present invention aims to solve at least one of the above-mentioned technical problems existing in the prior art. To this end, the present invention aims to provide a lens group adjustment mechanism that can achieve multi-dimensional adjustment of the lens group body, simplify the operation process, and improve assembly efficiency.

[0006] The present invention also provides a lens group having the above-mentioned lens group adjustment mechanism.

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

[0008] The lens group adjustment mechanism according to the embodiment of the present invention has at least the following beneficial effects: the lens group body can be moved along the central axis of the lens barrel, and can adjust the position of the lens group body in the first direction, thereby adjusting the spacing between two adjacent lens group bodies. At the same time, the lens group body is locked in the second direction and the third direction by the first adjustment member and the second adjustment member respectively, thereby adjusting the position of the lens group body in the second direction and the third direction, so that the optical axes of multiple lens group bodies are coaxially arranged. The present invention can realize multi-dimensional adjustment of the lens group body through the spacing adjustment component and the coaxial adjustment component, and there is no need to use mechanical equipment to adjust the spacing or coaxiality of multiple lens group bodies, thereby 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 arranged 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 portion, and a second thread is provided on the inner wall of the first mounting hole. The first thread cooperates with the second thread to facilitate 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 also includes a locking ring, which is sleeved on the outside of the connecting part, and the inner wall of the locking ring is provided with a third thread, and the third thread cooperates with the first thread. The locking ring is used to abut against the lens barrel to limit the lens group body.

[0012] According to some embodiments of the present invention, the lens barrel includes a head portion and a tail portion connected to the head portion, the first mounting hole is provided in the head portion, the tail portion 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 portion is provided on a side of the connecting portion away from the base portion, a second limiting step is provided between the extension portion and the connecting portion, and 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 invention, the mounting base is provided with a third mounting hole arranged along the first direction, the tail portion is arranged in the third mounting hole, and the mounting base is provided with a first adjustment hole arranged along the second direction, the first adjustment hole being connected to 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 portion, a first elastic portion, and a first stopping portion. The first adjusting portion is disposed in the first hole and abuts against the tail portion. The first adjusting portion is movable along the central axis of the first hole to adjust the position of the lens barrel in the second direction. The first elastic portion and the first stop portion are both arranged in the second hole, one end of the first elastic portion abuts against the tail portion, and the other end of the first elastic portion abuts against the first stop portion.

[0014] According to some embodiments of the present invention, a fourth thread is provided on the outer side of the first adjustment portion, and a fifth thread is provided on the inner wall of the first hole. The fourth thread cooperates with the fifth thread to facilitate movement of the first adjustment portion in 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, the second adjustment hole being communicated 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 portion, a second elastic portion, and a second stopping portion. The second adjusting portion is disposed in the third hole and abuts against the tail portion. The second adjusting portion is movable along a central axis in the third hole to adjust the position of the lens barrel in the third direction. The second elastic portion and the second stopping portion are both disposed in the fourth hole, one end of the second elastic portion abuts against the tail portion, and the other end of the second elastic portion abuts against the second stopping portion.

[0016] According to some embodiments of the present invention, a sixth thread is provided on the outer side of the second adjustment portion, and a seventh thread is provided on the inner wall of the third hole. The sixth thread cooperates with the seventh thread to facilitate the movement of the second adjustment portion in the third hole.

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

[0018] According to some embodiments of the present invention, a press-on assembly is further included, the head is provided with a first connecting groove, the mounting seat is provided with a second connecting groove, and the press-on assembly passes through the first connecting groove and cooperates with the second connecting groove to connect the lens barrel to the mounting seat.

[0019] According to some embodiments of the present invention, the pressing assembly includes a pressing accessory and a third elastic member, one end of the pressing accessory is arranged in the first connecting groove, the other end of the pressing accessory is connected to the second connecting groove, and the third elastic member is sleeved on the outside of the part of the pressing accessory located in the first connecting groove.

[0020] According to some embodiments of the present invention, a connecting hole is provided in the portion of the head close to the mounting seat, the connecting hole is connected to 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 pressing attachment.

[0021] According to some embodiments of the present invention, the pressing attachment includes a first pressing portion, a second pressing portion, and a third pressing portion connected in sequence, the first pressing portion being disposed in the first connecting groove, and the second pressing portion having a diameter smaller than that of the connecting hole, so as to facilitate adjustment of the position of the mounting seat in the second direction and the third direction; The third elastic member is sleeved on the outside of the second pressing portion, and the third pressing portion 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 portion, and a ninth thread is provided on the inner wall of the second connecting groove. The eighth thread cooperates with the ninth thread to facilitate movement of the pressing attachment in the second connecting groove.

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

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

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

[0026] The lens group according to the embodiment of the present invention has at least the following beneficial effects: no mechanical equipment is required to adjust the spacing or coaxiality of multiple lens groups, which simplifies the operation process, improves assembly efficiency, and meets the optical performance requirements of the lens group.

[0027] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1 This is a schematic structural diagram of a lens group adjustment mechanism according to an embodiment of the present invention; Figure 2 A front view of the lens group adjustment mechanism according to an embodiment of the present invention; Figure 3 for Figure 2 Cross-sectional view at AA in the middle; Figure 4 for Figure 2 Cross-sectional view at the middle BB; Figure 5 This is an exploded view of the lens group adjustment mechanism according to an embodiment of the present invention; Figure 6 This is a right side view of the lens group adjustment mechanism according to an embodiment of the present invention; Figure 7 for Figure 6 Cross-sectional view at CC; Figure 8 This is a schematic structural diagram of a lens group body according to an embodiment of the present invention; Figure 9 Schematic diagram of the structure of the lens barrel according to an embodiment of the present invention; Figure 10 This is a schematic structural diagram of a mounting base according to an embodiment of the present invention; Figure 11 This is a disassembled diagram of the press-attach component according to an embodiment of the present invention.

[0029] Reference numerals: 100, lens group body; 110, base; 120, connecting portion; 130, extending portion; 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; 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 slot; 320, first adjusting member; 321, first adjusting portion; 322, first elastic portion; 323, first stop portion; 330, second adjusting member; 331, second adjustment portion; 332, second elastic portion; 333, second stop portion; 400, press-attachment assembly; 410, press-attachment component; 411, first press-attachment portion; 412, second press-attachment portion; 413, third press-attachment portion; 414, fourth limiting step; 415, fifth limiting step; 420, third elastic member. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

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

[0032] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] Reference Figure 1 、 Figure 2 A first embodiment of the present invention 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 in the lens barrel 210, and the lens group body 100 can move 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 seat 310, a first adjustment member 320, and a second adjustment member 330, the lens barrel 210 is connected to the mounting seat 310, the first adjustment member 320 passes through the mounting seat 310 along the 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 seat 310 along the 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 can adjust the position of the lens group body 100 in the first direction, thereby adjusting the distance between two adjacent lens group bodies 100. The first adjusting member 320 and the second adjusting member 330 are used to lock the lens group body 100 in the second direction and the third direction respectively, thereby adjusting the position of the lens group body 100 in the second direction and the third direction, so that the optical axes of multiple lens group bodies 100 are coaxially arranged. The present invention can achieve multi-dimensional adjustment of the lens group body 100 through the spacing adjustment component 200 and the coaxial adjustment component 300, and there is no need to rely on machinery and equipment to adjust the spacing or coaxiality of multiple lens group bodies 100, thereby 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 is the optical axis direction of the lens group body 100. Figure 1, the first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction.

[0039] In some embodiments, multiple lens group adjustment mechanisms are arranged in sequence along the first direction, so that multiple lens group bodies 100 are arranged in sequence along the first direction, thereby achieving optical performance that is convenient for the lens group. The lens group body 100 of each lens group adjustment mechanism can adjust the distance between it and the adjacent lens group body 100 through its spacing adjustment component 200; the lens group body 100 of each lens group adjustment mechanism can be adjusted through its coaxial adjustment component 300, so that the optical axes of the multiple lens group bodies 100 are 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 arranged along a first direction, and the connecting portion 120 is arranged 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 distance 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 cooperate to facilitate movement of the lens group body 100 along the central axis of the lens barrel 210. Specifically, by rotating the lens group body 100, the first thread on the connecting portion 120 cooperates with the second thread in the first mounting hole 211, allowing the lens group body 100 to move toward or 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 by rotating the lens group body 100, without the need for an additional drive mechanism, 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. A third thread is provided on the inner wall of the locking ring 220, and the third thread 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 further determining the position of the lens group body 100 in the first direction.

[0043] Specifically, the locking ring 220 is rotated so that the locking ring 220 moves along the side away from the lens barrel 210, thereby loosening the locking ring 220 and the locking ring is not in contact with the lens barrel 210. At this time, the lens body can be rotated to adjust its position, avoiding displacement jamming caused by the locking ring 220 being locked during the adjustment process, thereby ensuring the smoothness of the adjustment process; then the lens group body 100 is rotated so that the lens group body 100 is close to or away from the lens barrel 210, and the lens group body 100 is adjusted to the first preset position; then the locking ring 220 is rotated in the opposite direction so that the locking ring 220 moves to abut against the lens barrel 210 to generate axial pressure, thereby forming a mechanical self-locking, thereby preventing the lens group body 100 from rotating or displacing due to external force, thereby ensuring the position 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 portion 212 and a tail portion 213 connected to the head portion 212, a first mounting hole 211 is provided in the head portion 212, and the tail portion 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, and a first limiting step 214 is formed between the first mounting hole 211 and the second mounting hole 215; an extension portion 130 is provided on the side of the connecting portion 120 away from the base 110, and a second limiting step 140 is provided between the extension portion 130 and the connecting portion 120, and 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 group body 100 moves toward the tail 213 of the lens barrel 210, the second limit step 140 touches the first limit step 214 to stop the rotation of the lens group body 100, which can help assemblers determine whether the lens group body 100 has reached the limit position and avoid collision of the lenses of the lens group body 100 due to 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 portion 213 of the lens barrel 210 is arranged in the third mounting hole 311, and the diameter of the second mounting hole 215 is greater than the width of the tail portion 213, so as to facilitate 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 a side of the mounting base 310 away from the rear portion 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 the optical axes of the two lens group bodies 100 are coaxially arranged by the coaxial adjustment component 300.

[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, and the first adjustment hole 312 is connected to 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 portion 321, a first elastic portion 322 and a first stop portion 323, the first adjustment portion 321 is arranged in the first hole position 3121, and the first adjustment portion 321 abuts against the tail portion 213, and the first adjustment portion 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 portion 322 and the first stop portion 323 are both arranged in the second hole position 3122, one end of the first elastic portion 322 abuts against the tail portion 213, and the other end of the first elastic portion 322 abuts against the first stop portion 323.

[0048] When making adjustments, the position of the first stop portion 323 in the second hole 3122 remains unchanged, and the first adjusting portion 321 is moved to the required position in the first hole 3121. Under the elastic action of the first elastic member, the first elastic member provides a force for the tail portion 213 of the lens barrel 210, so that the tail portion 213 of the lens barrel 210 always remains in contact with the first adjusting portion 321, so that the lens barrel 210 can move with the first adjusting member 320, so that the lens barrel 210 drives 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 disposed on the outer side of the first adjustment portion 321, and a fifth thread is disposed on the inner wall of the first hole 3121, with the fourth thread mating with the fifth thread. During adjustment, the first adjustment portion 321 is rotated to move within the first hole 3121. By adjusting the position of the first adjustment portion 321 within the first hole 3121, the position of the lens group body 100 in the second direction can be adjusted, simplifying the operation process.

[0050] In some embodiments, the first elastic member is configured as a spring. When the first adjustment portion 321 is rotated inward toward the lens barrel 210, the first elastic portion 322 is compressed and stores elastic potential energy. When the first adjustment portion 321 is rotated outward, the first elastic member uses elastic force to push the rear portion 213 of the lens barrel 210 to follow the movement, thereby achieving bidirectional adjustment capability. Of course, in actual design, the structure of the first elastic member 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 arranged along the third direction. The second adjustment hole 313 communicates with the third mounting hole 311, thereby dividing 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 portion 331, a second elastic portion 332, and a second stop portion 333. The second adjustment portion 331 is disposed within the third hole position 3131 and abuts against the tail portion 213. The second adjustment portion 331 is movable along the central axis within the third hole position 3131 to adjust the position of the lens barrel 210 in the third direction. Furthermore, the second elastic portion 332 and the second stop portion 333 are both disposed within the fourth hole position 3132. One end of the second elastic portion 332 abuts against the tail portion 213, while the other end of the second elastic portion 332 abuts against the second stop portion 333.

[0052] When making adjustments, the position of the second stop portion 333 in the fourth hole position 3132 remains unchanged, and the second adjusting portion 331 is moved to the required position in the third hole position 3131. Under the elastic action of the second elastic member, the second elastic member provides a force for the tail portion 213 of the lens barrel 210, so that the tail portion 213 of the lens barrel 210 always remains in contact with the second adjusting portion 331, so that the lens barrel 210 can follow the second following first adjusting member 320 to move, so that 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.

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

[0054] In some embodiments, the second elastic member is configured as a spring. When the second adjustment portion 331 is rotated in a direction toward the lens barrel 210, the second elastic portion 332 is compressed and stores elastic potential energy. When the second adjustment portion 331 is rotated outward, the second elastic member uses elastic force to push the rear portion 213 of the lens barrel 210 to follow the movement, thereby achieving bidirectional adjustment capability. Of course, in actual design, the structure of the second elastic member 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 press-fit assembly 400 passes through the first connecting groove 2121 and cooperates with the second connecting groove 314 to connect the lens barrel 210 and the mounting base 310, eliminating the need for complex alignment procedures and improving assembly efficiency.

[0056] Reference Figure 5 、 Figure 7 In some embodiments, the pressing assembly 400 includes a pressing attachment 410 and a third elastic member 420. One end of the pressing attachment 410 is arranged in the first connecting groove 2121, and the other end of the pressing attachment 410 is connected to the second connecting groove 314. The third elastic member 420 is sleeved on the outer side of the part of the pressing attachment 410 located in the first connecting groove 2121. The third elastic member 420 can provide a force along the first direction for the lens barrel 210, 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, a connection hole 2122 is provided in a portion of the head portion 212 of the lens barrel 210 near the mounting base 310. The connection hole 2122 communicates with the first connection slot 2121. The diameter of the connection hole 2122 is smaller than that of the first connection slot 2121. A third limiting step 2123 is formed between the connection hole 2122 and the first connection slot 2121. One end of the third elastic member 420 abuts against the third limiting step 2123, while the other end of the third elastic member 420 abuts against the pressing attachment 410, thereby limiting the second elastic member within the first connection slot 2121. When the pressing attachment 410 passes through the connection hole 2122 and is connected 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 pressing attachment 410, thereby preventing the elastic member from falling out of the first connection slot 2121 during adjustment or vibration.

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

[0059] In some embodiments, an eighth thread is provided on the outer side of the third pressing portion 413, and a ninth thread is provided on the inner wall of the second connecting groove 314. The eighth thread cooperates with the ninth thread to facilitate movement of the pressing member 410 within the second connecting groove 314. By rotating the pressing member 410, the depth of the third pressing portion 413 extending into the second connecting groove 314 is adjusted, ensuring that the force exerted by the pressing assembly 400 on the lens barrel 210 is within a reasonable range, thereby facilitating 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 portion 413 does not need to be fully extended into the second connecting groove 314, that is, the pressing attachment 410 does not need to be completely 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 adjusted 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 falling out of the pressing portion 410. Furthermore, the fourth limiting step 414 cooperates with the third limiting step 2123 within the head portion 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 portion 412 is larger than the diameter of the third pressing portion 413, and a fifth limiting step 415 is formed between the third pressing portion 413 and the second pressing portion 412. The fifth limiting step 415 is used to abut against the mounting seat 310 to limit the pressing attachment 410 and prevent the pressing attachment 410 from being over-adjusted.

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

[0064] Reference Figure 5 In some embodiments, four pressing components 400 can be provided, and the four pressing 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 seat 310, and prevent the lens barrel 210 from tilting and causing the lens group body 100 to tilt.

[0065] When you need to adjust the spacing of the lens groups, the following steps are included: The first step is to rotate the locking ring 220 so that the locking ring 220 moves along a side 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 a 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; In the third step, 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 the coaxiality of the lens group needs to be adjusted, the following steps are included: The first step is to rotate the pressing attachment 410 so that the pressing attachment 410 moves to a set position away from the mounting seat 310; In the second step, the first adjusting portion 321 of the first adjusting member 320 is rotated to adjust the position of the first adjusting portion 321 in the first adjusting hole 312 of the mounting seat 310. Under the action of the first elastic portion 322 and the first stop portion 323, the position of the lens barrel 210 in the second direction is changed, so that the lens barrel 210 drives the lens group body 100 to move, thereby adjusting the position of the lens group body 100 in the second direction. In the third step, the second adjusting portion 331 of the second adjusting member 330 is rotated to adjust the position of the second adjusting portion 331 in the second adjusting hole 313 of the mounting seat 310, and under the action of the second elastic portion 332 and the second stop portion 333, the position of the lens barrel 210 in the third direction is changed, so that 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 embodiment of the present invention provides a lens group, comprising the lens group adjustment mechanism of the first embodiment of the present invention.

[0068] The lens group of the embodiment of the present invention does not require mechanical equipment to adjust the spacing or coaxiality of the lens group, which simplifies the operation process, improves assembly efficiency, and meets the optical performance requirements of the lens group.

[0069] It should be noted that during the process of adjusting the spacing and coaxiality of the lens groups, it is possible to determine whether the adjustments are in place by observing the optical performance of the lens groups.

[0070] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

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

3. The lens group adjustment mechanism according to claim 2, characterized in that: The spacing adjustment component further includes a locking ring, which is sleeved on the outside of the connecting portion 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 portion and a tail portion connected to the head portion, wherein the first mounting hole is provided in the head portion, and the tail portion is provided with a second mounting hole communicating with the first mounting hole, wherein 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 portion is provided on a side of the connecting portion away from the base portion, a second limiting step is provided between the extension portion and the connecting portion, and 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, the tail portion is arranged in the third mounting hole, and the mounting base is provided with a first adjustment hole arranged along the second direction, the first adjustment hole is connected to 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 portion, a first elastic portion, and a first stopping portion. The first adjusting portion is disposed in the first hole and abuts against the tail portion. The first adjusting portion is movable along the central axis of the first hole to adjust the position of the lens barrel in the second direction. The first elastic portion and the first stop portion are both arranged in the second hole, one end of the first elastic portion abuts against the tail portion, and the other end of the first elastic portion abuts against the first stop portion.

6. The lens group adjustment mechanism according to claim 5, characterized in that: The mounting seat is provided with a second adjustment hole arranged along the third direction, the second adjustment hole is communicated 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 portion, a second elastic portion, and a second stopping portion. The second adjusting portion is disposed in the third hole and abuts against the tail portion. The second adjusting portion is movable along a central axis in the third hole to adjust the position of the lens barrel in the third direction. The second elastic portion and the second stopping portion are both disposed in the fourth hole, one end of the second elastic portion abuts against the tail portion, and the other end of the second elastic portion abuts against the second stopping portion.

7. The lens group adjustment mechanism according to claim 4, characterized in that: It also includes a press-on component, the head is provided with a first connecting groove, the mounting seat is provided with a second connecting groove, and the press-on component passes through the first connecting groove and cooperates with the second connecting groove to connect the lens barrel to the mounting seat.

8. The lens group adjustment mechanism according to claim 7, characterized in that: The pressing assembly includes a pressing attachment and a third elastic member, one end of the pressing attachment is arranged in the first connecting groove, the other end of the pressing attachment is connected to the second connecting groove, and the third elastic member is sleeved on the outside of the part of the pressing attachment located in the first connecting groove.

9. The lens group adjustment mechanism according to claim 8, characterized in that: A connecting hole is provided at a portion of the head portion close to the mounting seat, the connecting hole being in communication with the first connecting groove, the diameter of the connecting hole being smaller than the diameter of the first connecting groove, a third limiting step being formed between the connecting hole and the first connecting groove, one end of the third elastic member abutting against the third limiting step, and the other end of the third elastic member abutting against the pressing attachment; and / or, The pressing attachment comprises a first pressing portion, a second pressing portion, and a third pressing portion connected in sequence, wherein the first pressing portion is disposed in the first connecting groove, and the diameter of the second pressing portion is smaller than the diameter of the connecting hole, so as to facilitate adjustment of the position of the mounting seat in the second direction and the third direction; The third elastic member is sleeved on the outside of the second pressing portion, and the third pressing portion is connected to the second connecting groove.

10. A lens group, characterized in that: It comprises a lens group adjustment mechanism as described in any one of claims 1 to 9.

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