Focusing zoom lens mechanism
By designing an independently partitioned motor drive structure in the focus zoom lens mechanism, the problem of mutual influence between linkage groups in the prior art is solved, lower part accuracy requirements and simpler operating principles are achieved, and the Optical performance of the lens.
Patent Information
- Application Number
- CN202411711822.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-02-21
AI Technical Summary
In the existing focus zoom lens mechanism, two linkage groups are set in the same outer lens barrel, which causes if one group fails to perform normally during the zoom process, it will affect the subsequent focus action and cannot effectively correct the lens light path. .
Design an independently partitioned focus zoom lens mechanism, in which the two motor drive mechanisms do not affect each other, one motor controls the zoom group, and the other motor controls the focus group to ensure the independent action of each group Do not interfere with each other.
This design reduces the accuracy requirements of parts, simplifies the operating principle, ensures that each motor controlled part runs independently, does not affect the optical functions of other parts, and improves the optical performance of the lens.
Smart Images
Figure CN119493232A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of lenses, and in particular to a focusing and variable magnification lens mechanism. Background Art
[0002] The existing implementation scheme of focusing and zooming lens usually sets two sets of linked inner lens barrels inside the outer lens barrel, one set is responsible for zooming and the other set is responsible for focusing. The two sets of lens barrels are set in the same inner lens barrel. The technical principle is as follows Figure 7 , through the two motors set on the outer barrel, the linkage group 1 is driven to change the magnification, and the linkage group 2 is driven to focus. This solution has a large coordination risk during implementation. Since the two linkage groups are set in one outer barrel, it is assumed that the linkage group 1 is the magnification group and the linkage group 2 is the focusing group (vice versa), and the light path is transmitted from the right (vice versa). During the execution process, this mechanism first performs the magnification action (that is, the linkage group 1 is actuated first). Once it fails to perform the magnification operation normally during this process (such as the assembly tolerance is large and cannot meet the optical accuracy), the subsequent focusing action (and linkage group 2 is actuated) is performed. Since the linkage group 1 fails to meet the optical requirements, no matter how the linkage group 2 is actuated, the lens optical path cannot be corrected. This phenomenon can be compared to the circuit series phenomenon, that is, two bulbs (analogous to the two linkage groups) are connected in series on the circuit (analogous to the outer barrel). If one bulb is bad, the other cannot work normally. Therefore, in order to solve this problem, we propose a focusing and magnification lens mechanism. Summary of the invention
[0003] The main purpose of the present invention is to provide a focusing and zooming lens mechanism, which can effectively solve the problems in the background technology.
[0004] To achieve the above object, the technical solution adopted by the present invention is:
[0005] A focusing and zooming lens mechanism comprises a linkage group, wherein an outer lens barrel A is movably mounted on the outer surface of the linkage group, a first driving structure is movably mounted on the outer surface of the outer lens barrel A, a first driving motor is fixedly mounted on the surface of the outer lens barrel A located in front of the first driving structure, an outer lens barrel B is movably mounted on the surface of the outer lens barrel A located at the rear end, a second driving structure is movably mounted on the surface of the outer lens barrel B, and a second driving motor is fixedly mounted on the surface of the outer lens barrel B located behind the second driving structure.
[0006] Further, the linkage group includes a linkage barrel, a first transmission slide bar, a first guide slide groove, a second guide slide groove, a third guide slide groove, a front end inner barrel, a middle inner barrel, a rear end inner barrel and a linkage slide bar, the outer surface of the linkage barrel is fixedly installed with the first transmission slide bar near the middle three-division position, the surface of the linkage barrel is provided with a second guide slide groove at the three-division position in front of the second guide slide groove, the surface of the linkage barrel is provided with a first guide slide groove at the three-division position in front of the second guide slide groove, the surface of the linkage barrel is provided with a first guide slide groove at the three-division position in the rear of the second guide slide groove, the middle inner barrel is movably installed at the middle position inside the linkage barrel, the front end inner barrel is movably installed inside the linkage barrel at the rear of the middle inner barrel, the rear end inner barrel is movably installed inside the linkage barrel at the front of the middle inner barrel, and the linkage slide bars are fixedly installed at the three-division positions of the surfaces of the front end inner barrel, the middle inner barrel and the rear end inner barrel.
[0007] Furthermore, the middle inner lens barrel is inserted into the three second guide slots through the three linkage slide bars and is movably mounted with the linkage lens barrel, the front end inner lens barrel is inserted into the three first guide slots through the three linkage slide bars and is movably mounted with the linkage lens barrel, and the rear end inner lens barrel is inserted into the three third guide slots through the three linkage slide bars and is movably mounted with the linkage lens barrel.
[0008] Furthermore, the outer lens barrel A includes an outer barrel, a linkage guide slot, a second transmission slide rod and a first transmission slot. The outer barrel surface is provided with linkage guide slots at three equal parts, the second transmission slide rod is fixedly installed between the linkage guide slots at three equal parts of the outer barrel surface, and the first transmission slot is provided at three equal parts of the outer barrel surface in front of the second transmission slide rod.
[0009] Furthermore, the three groups of linkage slide bars at corresponding positions on the front inner lens barrel, the middle inner lens barrel and the rear inner lens barrel are respectively inserted into the three linkage guide slide grooves.
[0010] Furthermore, the first driving structure includes a first driving ring, a nesting hole and a first arc-shaped rack, the surface of the first driving ring is provided with nesting holes at three equal parts, the surface of the first driving ring is fixedly mounted with a first arc-shaped rack, and the three first transmission slide rods respectively pass through the three first transmission slide grooves and are inserted into the three nesting holes at corresponding positions.
[0011] Furthermore, a first mounting seat is fixedly installed on the surface of the first drive motor, and the first drive motor is fixedly installed on the outer surface of the outer cylinder through the first mounting seat. A first drive gear is fixedly installed on the output end of the first drive motor, and the first drive gear is meshed and connected with the first arc-shaped rack.
[0012] Furthermore, fourth guide grooves are provided at three equal parts of the arc surface of the outer lens barrel B, the second driving structure includes a second driving ring, a second transmission groove and a second arc-shaped rack, second transmission grooves are provided at three equal parts of the surface of the second driving ring, a second arc-shaped rack is fixedly mounted on the outer surface of the second driving ring, and three second transmission slide rods respectively pass through the three fourth guide grooves and are inserted into the three second transmission grooves at corresponding positions.
[0013] Furthermore, a second mounting seat is fixedly installed on the surface of the second drive motor, and the second drive motor is fixedly installed on the outer lens barrel B through the second mounting seat. A second drive gear is fixedly installed on the output end of the second drive motor, and the second drive gear is meshingly connected with the second arc-shaped rack.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] In the present invention, in the zoom lens mechanism, the two motors adjust the mechanisms in independent partitions and do not affect each other. Compared with the existing solution, this solution has lower requirements on parts precision and a simpler actuation principle. The motors control two independent parts respectively, one controls the internal group linkage and the other controls the overall optical actuation, and will not affect each other's respective optical functions. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of a focusing and zooming lens mechanism of the present invention;
[0017] Figure 2 A partial disassembly display diagram of a focusing and zooming lens mechanism of the present invention;
[0018] Figure 3 This is a diagram showing an outer lens barrel A of a focusing and zooming lens mechanism of the present invention;
[0019] Figure 4 A cross-sectional view of a first driving ring of a focus and zoom lens mechanism of the present invention;
[0020] Figure 5 This is a linkage group display diagram of a focus and zoom lens mechanism of the present invention;
[0021] Figure 6 A partial cross-sectional view of a linkage group of a focus and zoom lens mechanism of the present invention;
[0022] Figure 7 It is a simplified diagram of the prior art structure in the background technology of the present invention.
[0023] In the figure: 1, linkage group; 101, linkage barrel; 102, first transmission slide bar; 103, first guide slide groove; 104, second guide slide groove; 105, third guide slide groove; 106, front inner barrel; 107, middle inner barrel; 108, rear inner barrel; 109, linkage slide bar; 2, outer barrel A; 201, outer barrel; 202, linkage guide slide groove; 203, second transmission slide bar; 204, first transmission slide groove; 3, first Driving structure; 301, first driving ring; 302, nesting hole; 303, first arc-shaped rack; 4, first driving motor; 401, first driving gear; 402, first mounting seat; 5, second driving structure; 501, second driving ring; 502, second transmission slide groove; 503, second arc-shaped rack; 6, outer barrel B; 601, fourth guide slide groove; 7, second driving motor; 701, second mounting seat; 702, second driving gear. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0025] like Figure 1-6 As shown, a focusing and zooming lens mechanism comprises a linkage group 1, an outer lens barrel A2 is movably mounted on the outer surface of the linkage group 1, a first driving structure 3 is movably mounted on the outer surface of the outer lens barrel A2, a first driving motor 4 is fixedly mounted on the surface of the outer lens barrel A2 located in front of the first driving structure 3, an outer lens barrel B6 is movably mounted on the surface of the outer lens barrel A2 located at the rear end, a second driving structure 5 is movably mounted on the surface of the outer lens barrel B6, a second driving motor 7 is fixedly mounted on the surface of the outer lens barrel B6 located at the rear of the second driving structure 5, wherein the second driving motor 7 drives the outer lens barrel A2, and the first driving motor 4 drives the linkage group 1, and the two are driven independently and do not affect each other;
[0026] The linkage group 1 includes a linkage barrel 101, a first transmission slide bar 102, a first guide slot 103, a second guide slot 104, a third guide slot 105, a front inner barrel 106, a middle inner barrel 107, a rear inner barrel 108 and a linkage slide bar 109. The first transmission slide bar 102 is fixedly installed near the middle third position of the outer surface of the linkage barrel 101. The second guide slot 104 is provided at the third third position of the surface of the linkage barrel 101 and located between the first transmission slide bars 102. The third guide slot 105 is provided at the third third position of the surface of the linkage barrel 101 located in front of the second guide slot 104. The first guide slots 103 are provided at the third positions of the rear of the second guide slots 104, a middle inner barrel 107 is movably installed at the middle position of the linkage barrel 101, a front inner barrel 106 is movably installed at the rear of the middle inner barrel 107 in the linkage barrel 101, a rear inner barrel 108 is movably installed at the front of the middle inner barrel 107 in the linkage barrel 101, and linkage slide bars 109 are fixedly installed at the third positions of the surfaces of the front inner barrel 106, the middle inner barrel 107 and the rear inner barrel 108; the middle inner barrel 107 is inserted into the three second guide slots 104 and connected to the linkage barrel 101 through the three linkage slide bars 109. The front inner lens barrel 106 is movably installed by inserting into the three first guide slots 103 through the three linkage slide bars 109 and movably installed with the linkage lens barrel 101, and the rear inner lens barrel 108 is inserted into the three third guide slots 105 through the three linkage slide bars 109 and movably installed with the linkage lens barrel 101; the outer lens barrel A2 includes an outer barrel 201, a linkage guide slot 202, a second transmission slide bar 203 and a first transmission slot 204, and the surface of the outer barrel 201 is divided into three equal parts, and the second transmission slide bar 203 is fixedly installed between the linkage guide slots 202, and the surface of the outer barrel 201 is located at the second The first transmission slide grooves 204 are provided at the three equal parts in front of the transmission slide bar 203; the linkage slide bars 109 at the three corresponding positions on the front inner lens barrel 106, the middle inner lens barrel 107 and the rear inner lens barrel 108 are respectively inserted into the three linkage guide slide grooves 202; the first driving structure 3 includes a first driving ring 301, a nesting hole 302 and a first arc-shaped rack 303, the surface of the first driving ring 301 is provided with a nesting hole 302 at the three equal parts, the surface of the first driving ring 301 is fixedly mounted with a first arc-shaped rack 303, and the three first transmission slide bars 102 respectively pass through the three first transmission slide grooves 204 and are inserted into the three nesting holes 302 at the corresponding positions;A first mounting seat 402 is fixedly installed on the surface of the first driving motor 4, and the first driving motor 4 is fixedly installed on the outer surface of the outer tube 201 through the first mounting seat 402. A first driving gear 401 is fixedly installed on the output end of the first driving motor 4, and the first driving gear 401 is meshed and connected with the first arc-shaped rack 303. The first driving motor 4 drives the first driving ring 301 to rotate, and the first driving ring 301 drives the linkage barrel 101 to rotate through the first transmission slide bar 102. Because the rotation direction of all linkage slide bars 109 is limited by the linkage guide groove 202, the rotation of the linkage barrel 101 can drive the front end inner barrel 106, the middle inner barrel 107 and the rear end inner barrel 108 to drive forward and backward through the first guide groove 103, the second guide groove 104 and the third guide groove 105 respectively to adjust the lens; the fourth guide groove 601 is opened at the three equally divided positions of the arc surface of the outer barrel B6, and the second driving structure 5 includes The second driving ring 501, the second transmission slide groove 502 and the second arc-shaped rack 503, the second driving ring 501 is provided with the second transmission slide groove 502 at three equal positions on the surface, the second arc-shaped rack 503 is fixedly installed on the outer surface of the second driving ring 501, the three second transmission slide bars 203 respectively pass through the three fourth guide slide grooves 601 and are inserted into the three second transmission slide grooves 502 at the corresponding positions, the second driving ring 501 is driven to rotate by the second driving motor 7, and the second transmission slide bar 203 is moved forward and backward in the fourth guide slide groove 601 through the second transmission slide groove 502 to adjust the lens; the second mounting seat 701 is fixedly installed on the surface of the second driving motor 7, the second driving motor 7 is fixedly installed on the outer lens barrel B6 through the second mounting seat 701, the output end of the second driving motor 7 is fixedly installed with the second driving gear 702, and the second driving gear 702 is meshed and connected with the second arc-shaped rack 503. ;
[0027] It should be noted that the present invention is a focusing and zooming lens mechanism, in which the linkage group 1 is arranged in the outer lens barrel A2, the linkage group 1 is driven by the first drive motor 4 to perform zooming or focusing, and then the outer lens barrel A2 is arranged in the outer lens barrel B6, and the outer lens barrel A2 is driven by the second drive motor 7 to actuate, that is, when the outer lens barrel A2 is actuated, the linkage group 1 will follow the outer lens barrel A2 to actuate, and perform focusing or zooming. In this scheme, the focusing group and the zooming group are both independent partitions, and the optical path only passes through the linkage group 1. During the execution process, this mechanism first performs the zooming action, that is, the linkage group 1 is actuated first. During this process, if it fails to perform the zooming operation normally, such as the assembly tolerance is large and the optical accuracy cannot be met, when the focusing action is performed later, that is, when the outer lens barrel A2 is actuated, the optical path of the entire lens is corrected by adjusting the position of the outer lens barrel A2 to compensate for the poor optical performance caused by the linkage group 1. This phenomenon can be compared to the circuit parallel phenomenon, that is, two bulbs (analogous to two linkage groups) are connected in parallel on the circuit (analogous to the outer lens barrel). If one bulb is defective, the other can function normally.
[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A focusing and zooming lens mechanism, characterized in that: The invention comprises a linkage group (1), wherein an outer lens barrel A (2) is movably mounted on the outer surface of the linkage group (1), a first driving structure (3) is movably mounted on the outer surface of the outer lens barrel A (2), a first driving motor (4) is fixedly mounted on the surface of the outer lens barrel A (2) located in front of the first driving structure (3), an outer lens barrel B (6) is movably mounted on the surface of the outer lens barrel A (2) located at the rear end, a second driving structure (5) is movably mounted on the surface of the outer lens barrel B (6), and a second driving motor (7) is fixedly mounted on the surface of the outer lens barrel B (6) located behind the second driving structure (5).
2. The focusing and zooming lens mechanism according to claim 1, characterized in that: The linkage group (1) comprises a linkage lens barrel (101), a first transmission slide bar (102), a first guide slide groove (103), a second guide slide groove (104), a third guide slide groove (105), a front inner lens barrel (106), a middle inner lens barrel (107), a rear inner lens barrel (108) and a linkage slide bar (109); the first transmission slide bar (102) is fixedly mounted at the third position of the outer surface of the linkage lens barrel (101) near the middle; the second guide slide groove (104) is provided at the third position of the surface of the linkage lens barrel (101) and located between the first transmission slide bars (102); the third position of the surface of the linkage lens barrel (101) located in front of the second guide slide groove (104) is provided A third guide slot (105), the surface of the linkage lens barrel (101) is provided with a first guide slot (103) at three equal parts behind the second guide slot (104), a middle inner lens barrel (107) is movably mounted at the middle position inside the linkage lens barrel (101), a front inner lens barrel (106) is movably mounted at the rear of the middle inner lens barrel (107) inside the linkage lens barrel (101), a rear inner lens barrel (108) is movably mounted at the front of the middle inner lens barrel (107) inside the linkage lens barrel (101), and linkage slide bars (109) are fixedly mounted at three equal parts of the surface of the front inner lens barrel (106), the middle inner lens barrel (107) and the rear inner lens barrel (108).
3. The focusing and zooming lens mechanism according to claim 2, characterized in that: The middle inner lens barrel (107) is inserted into the three second guide slide grooves (104) through the three linkage slide bars (109) and is movably mounted with the linkage lens barrel (101); the front inner lens barrel (106) is inserted into the three first guide slide grooves (103) through the three linkage slide bars (109) and is movably mounted with the linkage lens barrel (101); and the rear inner lens barrel (108) is inserted into the three third guide slide grooves (105) through the three linkage slide bars (109) and is movably mounted with the linkage lens barrel (101).
4. The focusing and zooming lens mechanism according to claim 3, characterized in that: The outer lens barrel A (2) comprises an outer barrel (201), a linkage guide slide groove (202), a second transmission slide rod (203) and a first transmission slide groove (204); the linkage guide slide groove (202) is provided at three equal positions on the surface of the outer barrel (201); the second transmission slide rod (203) is fixedly installed at three equal positions on the surface of the outer barrel (201) located between the linkage guide slide grooves (202); and the first transmission slide rod (204) is provided at three equal positions on the surface of the outer barrel (201) located in front of the second transmission slide rod (203).
5. The focusing and zooming lens mechanism according to claim 4, characterized in that: The three groups of linkage slide bars (109) at corresponding positions on the front inner lens barrel (106), the middle inner lens barrel (107) and the rear inner lens barrel (108) are respectively inserted into the three linkage guide slide grooves (202).
6. The focusing and zooming lens mechanism according to claim 5, characterized in that: The first driving structure (3) comprises a first driving ring (301), a nesting hole (302) and a first arc-shaped rack (303); the first driving ring (301) has a surface provided with nesting holes (302) at three equal positions; the surface of the first driving ring (301) is fixedly provided with a first arc-shaped rack (303); and the three first transmission slide bars (102) respectively pass through the three first transmission slide grooves (204) and are inserted into the three nesting holes (302) at corresponding positions.
7. The focusing and zooming lens mechanism according to claim 6, characterized in that: A first mounting seat (402) is fixedly mounted on the surface of the first drive motor (4), and the first drive motor (4) is fixedly mounted on the outer surface of the outer cylinder (201) through the first mounting seat (402). A first drive gear (401) is fixedly mounted on the output end of the first drive motor (4), and the first drive gear (401) is meshingly connected with the first arc-shaped rack (303).
8. The focusing and zooming lens mechanism according to claim 7, characterized in that: The arc surface of the outer lens barrel B (6) is provided with fourth guide grooves (601) at three equal parts, the second driving structure (5) comprises a second driving ring (501), a second transmission groove (502) and a second arc-shaped rack (503), the surface of the second driving ring (501) is provided with second transmission grooves (502) at three equal parts, the outer surface of the second driving ring (501) is fixedly mounted with a second arc-shaped rack (503), and the three second transmission slide bars (203) respectively pass through the three fourth guide grooves (601) and are inserted into the three second transmission grooves (502) at corresponding positions.
9. The focusing and zooming lens mechanism according to claim 8, characterized in that: A second mounting seat (701) is fixedly mounted on the surface of the second drive motor (7), and the second drive motor (7) is fixedly mounted on the outer lens barrel B (6) via the second mounting seat (701). A second drive gear (702) is fixedly mounted on the output end of the second drive motor (7), and the second drive gear (702) is meshingly connected with the second arc-shaped rack (503).