Focusing zoom lens mechanism

Abstract

The utility model discloses a focusing zoom lens mechanism, comprising a linkage group, the outer surface of the linkage group is movably sleeved with an outer lens cone A, the outer surface of the outer lens cone A is movably sleeved with a first driving structure, and the surface of the outer lens cone A is fixedly provided with a first driving motor in front of the first driving structure. An outer lens cone B is movably installed at the rear end of the surface of the outer lens cone A in a sleeving mode, and a second driving structure is movably installed on the surface of the outer lens cone B in a sleeving mode. According to the focusing zoom lens mechanism provided by the utility model, in the focusing zoom lens mechanism, two motor adjusting mechanisms are independently partitioned and do not influence each other. Compared with the existing scheme, the scheme has the advantages that the requirement on the precision of parts is lower, the actuation principle is more concise, the motors respectively control two independent parts, one controls internal group linkage, the other controls integral optical actuation, and the respective optical functions are not mutually influenced.

Description

Technical Field

[0001] The utility model relates to the field of lenses, in particular to a focusing and zooming lens mechanism. Background Art

[0002] The existing implementation scheme of focus zoom lens usually sets two sets of linked inner barrels inside the outer barrel, one for zooming and the other for focusing. The two sets of barrels are set in the same inner barrel, and the technical principle is as follows: Figure 7 , through two motors set on the outer barrel, respectively drive linkage group 1 for zooming and linkage group 2 for focusing. This solution has a large coordination risk during implementation. Since the two linkage groups are set in one outer barrel, assuming that linkage group 1 is the zoom group and linkage group 2 is the focusing group (and vice versa), the light path is transmitted from the right (and vice versa). During the execution process, this mechanism first performs the zoom action (that is, linkage group 1 is actuated first). If it fails to perform the zoom operation normally during this process (such as large assembly tolerances and cannot meet optical precision), the subsequent focusing action (and linkage group 2 is actuated) will fail to meet the optical requirements. No matter how linkage group 2 is actuated, the lens optical path cannot be corrected. This phenomenon can be compared to the phenomenon of circuit series connection, that is, two light bulbs (analogous to the two linkage groups) are connected in series on the circuit (analogous to the outer barrel). If one light bulb is faulty, the other will not work properly. Therefore, in order to solve this problem, we propose a focusing and zooming lens mechanism. Utility Model Content

[0003] The main purpose of the utility model is to provide a focusing and zooming lens mechanism, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A focusing and zooming lens mechanism comprises a linkage group, wherein an outer barrel A is movably mounted on the outer surface of the linkage group, a first drive structure is movably mounted on the outer surface of the outer barrel A, a first drive motor is fixedly mounted on the surface of the outer barrel A located in front of the first drive structure, an outer barrel B is movably mounted on the surface of the outer barrel A located at the rear end, a second drive structure is movably mounted on the surface of the outer barrel B, and a second drive motor is fixedly mounted on the surface of the outer barrel B located behind the second drive structure.

[0006] The first guide slot is formed on the top of the linkage barrel and the second guide slot is formed on the bottom of the linkage barrel, and the third guide slot is formed on the top of the linkage barrel to move the front end of the linkage barrel to the rear of the linkage barrel, and the third guide slot is formed on the top of the linkage barrel to move the front end of the linkage barrel to the rear of the linkage barrel.

[0007] Furthermore, the middle inner lens barrel is inserted into the three second guide slots through the three linkage slide rods and is movably mounted with the linkage lens barrel, the front inner lens barrel is inserted into the three first guide slots through the three linkage slide rods and is movably mounted with the linkage lens barrel, and the rear inner lens barrel is inserted into the three third guide slots through the three linkage slide rods 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 a linkage guide slot 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 slots.

[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. The three first transmission slide rods respectively pass through the three first transmission slots 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 with the first arc-shaped rack.

[0012] Furthermore, the arc surface of the outer lens barrel B is divided into three equal parts and provided with a fourth guide groove. The second driving structure includes a second driving ring, a second transmission groove and a second arc-shaped rack. The surface of the second driving ring is divided into three equal parts and provided with a second transmission groove. The outer surface of the second driving ring is fixedly mounted with a second arc-shaped rack. The three second transmission slide rods respectively pass through the three fourth guide grooves and are inserted into the three second transmission grooves at the corresponding positions.

[0013] Furthermore, a second mounting base 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 base. A second drive gear is fixedly installed on the output end of the second drive motor, and the second drive gear is meshed with the second arc-shaped rack.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this utility model, the two motors in the zoom lens mechanism are independently controlled and do not affect each other. Compared with existing solutions, this solution requires lower component precision and has a simpler actuation principle. The motors control two independent parts: one controls the internal group linkage, and the other controls the overall optical actuation, without affecting each other's optical functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a focusing and zooming lens mechanism of the utility model;

[0017] Figure 2 This is a partial disassembly diagram of a focus and zoom lens mechanism of the utility model;

[0018] Figure 3 This is a diagram showing the outer barrel A of a focusing and zooming lens mechanism of the present invention;

[0019] Figure 4 This is a cross-sectional view of a first drive 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 utility model;

[0021] Figure 6 This is a partial cross-sectional view of a linkage group of a focus and zoom lens mechanism of the present invention;

[0022] Figure 7 This is a simplified diagram of the prior art structure in the background technology of this utility model.

[0023] In the figure: 1. Linkage group; 101. Linkage barrel; 102. First transmission slide; 103. First guide slot; 104. Second guide slot; 105. Third guide slot; 106. Front inner barrel; 107. Middle inner barrel; 108. Rear inner barrel; 109. Linkage slide; 2. Outer barrel A; 201. Outer barrel; 202. Linkage guide slot; 203. Second transmission slide; 204. First transmission slot; 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; 503, second arc-shaped rack; 6, outer barrel B; 601, fourth guide slide; 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 easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1-6 As shown, a focusing and zooming lens mechanism includes a linkage group 1, an outer 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 barrel A2, a first driving motor 4 is fixedly mounted on the surface of the outer barrel A2 located in front of the first driving structure 3, an outer barrel B6 is movably mounted on the surface of the outer barrel A2 located at the rear end, a second driving structure 5 is movably mounted on the surface of the outer barrel B6, a second driving motor 7 is fixedly mounted on the surface of the outer barrel B6 located behind the second driving structure 5, wherein the second driving motor 7 drives the outer 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 outer surface of the linkage barrel 101 is fixedly mounted with the first transmission slide bar 102 near the middle third position. The second guide slot 104 is provided at the third third position of the surface of the linkage barrel 101 and is located between the first transmission slide bar 102. The third guide slot 105 is provided at the third third position of the surface of the linkage barrel 101 in front of the second guide slot 104. A first guide slot 103 is provided at the rear three-division position of the second guide slot 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 inside the linkage barrel 101, a rear inner barrel 108 is movably installed at the front of the middle inner barrel 107 inside the linkage barrel 101, and a linkage slide bar 109 is fixedly installed at the three-division position of the surface 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 three linkage slide bars 109. The front inner barrel 106 is movably installed by inserting the three first guide slots 103 into the three linkage slides 109 and movably installed with the linkage barrel 101, and the rear inner barrel 108 is movably installed by inserting the three third guide slots 105 into the three linkage slides 109 and movably installed with the linkage barrel 101; the outer barrel A2 includes an outer barrel 201, a linkage guide slot 202, a second transmission slide 203 and a first transmission slot 204, and the surface of the outer barrel 201 is divided into three equal parts and is provided with a linkage guide slot 202, and the surface of the outer barrel 201 is divided into three equal parts and is provided with a second transmission slide 203 fixedly installed between the linkage guide slots 202, and the surface of the outer barrel 201 is located at the second First transmission slots 204 are provided at three equal points in front of the transmission slide 203; three groups of corresponding linkage slides 109 on the front inner barrel 106, the middle inner barrel 107, and the rear inner barrel 108 are respectively inserted into the three corresponding linkage guide slots 202; the first driving structure 3 includes a first driving ring 301, a nesting hole 302, and a first arcuate rack 303. Nesting holes 302 are provided at three equal points on the surface of the first driving ring 301, and the first arcuate rack 303 is fixedly mounted on the surface of the first driving ring 301. The three first transmission slides 102 respectively pass through the three first transmission slots 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 cylinder 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 102. Because the rotation direction of all linkage slides 109 is limited by the linkage guide slot 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 be driven forward and backward respectively through the first guide slot 103, the second guide slot 104 and the third guide slot 105 to adjust the lens; the arc surface of the outer barrel B6 is divided into three equal parts by a fourth guide slot 601, and the second driving structure 5 includes The second drive ring 501, the second transmission chute 502, and the second arc-shaped rack 503 are each provided with a second transmission chute 502 at three equal points on the surface of the second drive ring 501. The outer surface of the second drive ring 501 is fixedly mounted with a second arc-shaped rack 503. The three second transmission slides 203 pass through the three fourth guide slots 601 and are inserted into the three second transmission slots 502 at the corresponding positions. The second drive ring 501 is driven to rotate by the second drive motor 7. During rotation, the second transmission slides 502 cause the second transmission slides 203 to move a certain distance back and forth in the fourth guide slots 601 to adjust the lens. The surface of the second drive motor 7 is fixedly mounted with a second mounting seat 701. The second drive motor 7 is fixedly mounted on the outer lens barrel B6 via the second mounting seat 701. The output end of the second drive motor 7 is fixedly mounted with a second drive gear 702, which 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, which sets the linkage group 1 in the outer barrel A2, drives the linkage group 1 by the first drive motor 4 to perform zooming or focusing, and then sets the outer barrel A2 in the outer barrel B6, drives the outer barrel A2 to actuate by the second drive motor 7, that is, when the outer barrel A2 actuates, the linkage group 1 will follow the outer 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 actuates 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 subsequently performed, that is, when the outer barrel A2 actuates, the optical path of the entire lens is corrected by adjusting the position of the outer barrel A2 to compensate for the defect of the linkage group 1 and the decline in optical performance. This phenomenon can be compared to the parallel circuit phenomenon, that is, two bulbs (analogous to two linkage groups) are connected in parallel on the circuit (analogous to the outer tube). If one bulb is defective, the other can work normally.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A focusing and zooming lens mechanism, characterized by: 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) 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, wherein: The linkage group (1) comprises 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 outer surface of the linkage barrel (101) is fixedly mounted with the first transmission slide bar (102) at a position close to the middle third of the outer surface. The second guide slot (104) is provided at a position between the first transmission slide bar (102) and at a position in front of the second guide slot (104). The third guide slot (105) is provided on the surface of the linkage lens barrel (101) at three equal parts behind the second guide slot (104), and a first guide slot (103) is provided. A middle inner lens barrel (107) is movably installed in the middle position of the linkage lens barrel (101). A front inner lens barrel (106) is movably installed in the interior of the linkage lens barrel (101) at the rear of the middle inner lens barrel (107), and a rear inner lens barrel (108) is movably installed in the interior of the linkage lens barrel (101) at the front of the middle inner lens barrel (107). Linkage slide bars (109) are fixedly installed 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, wherein: The middle inner lens barrel (107) is inserted into the three second guide slots (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 slots (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 slots (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, wherein: The outer lens barrel A (2) comprises an outer barrel (201), a linkage guide slide groove (202), a second transmission slide bar (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 bar (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 bar (204) is provided at three equal positions on the surface of the outer barrel (201) located in front of the second transmission slide bar (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 end inner lens barrel (106), the middle inner lens barrel (107) and the rear end 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) is provided with a nesting hole (302) at three equal positions on the surface; the first arc-shaped rack (303) is fixedly mounted on the surface of the first driving ring (301); the three first transmission slide rods (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) via 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 meshedly 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 a fourth guide slot (601) at three equal parts, the second driving structure (5) comprises a second driving ring (501), a second transmission slot (502) and a second arc-shaped rack (503), the surface of the second driving ring (501) is provided with a second transmission slot (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 rods (203) respectively pass through the three fourth guide slots (601) and are inserted into the three second transmission slots (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 meshedly connected with the second arc-shaped rack (503).

Images