Rolling suspension optical focusing structure

Abstract

The utility model discloses a rolling suspension optical focusing structure, which belongs to the technical field of optical lenses, and comprises an outer lens cone, a movable lens cone and a focusing mechanism, the movable lens cone is supported in one end of the outer lens cone through a ball, the side wall of the outer lens cone is provided with an avoiding hole at a position corresponding to the movable lens cone, and the focusing mechanism is arranged in the avoiding hole. And the focusing mechanism is arranged at the avoiding hole and is connected with the movable lens cone. The optical lens is simple in structure and convenient to use, the contact area between the movable lens barrel and the outer lens barrel can be greatly reduced through ball supporting, so that the friction force generated when the movable lens barrel moves in the axis direction of the outer lens barrel is greatly reduced, meanwhile, abrasion of the inner wall of the outer lens barrel is reduced, abrasive dust cannot fall into the outer lens barrel, a lens in an optical cavity is prevented from being polluted, and the service life of the optical cavity is prolonged. And the cleanliness and the service life of the optical lens are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to optical lens technical field, concretely relates to a kind of rolling suspension optical focusing structure. BACKGROUND

[0002] Optical lens has been applied in various fields in life, and there are a large number of applications in zoom lens, laser focusing lens and other products, but the current lens focusing structure mainly adopts the way of screw groove direct contact sliding to focus, which has two barrel contact area, resulting in large resistance and serious wear during focusing, and also produces grinding dust, which pollutes the lens. INVENTION CONTENT

[0003] The utility model embodiment is to provide a kind of rolling suspension optical focusing structure, which is simple in structure, easy to use and can better improve the above problems.

[0004] The utility model embodiment is implemented as follows:

[0005] The utility model embodiment provides a kind of rolling suspension optical focusing structure, including outer lens barrel, mobile lens barrel and focusing mechanism, the mobile lens barrel is supported in the inside of one end of the outer lens barrel by ball, the side wall of the outer lens barrel is provided with the hole for avoidance in the part corresponding with the mobile lens barrel, the focusing mechanism is set at the hole for avoidance and is connected with the mobile lens barrel.

[0006] Further, the outer side wall of the mobile lens barrel is provided with mounting hole, the ball is arranged at the hole mouth of the mounting hole, and the spring for supporting the ball is further arranged in the mounting hole.

[0007] Further, a plurality of mounting holes are distributed on the outer side walls of the two ends of the mobile lens barrel in the circumferential direction, and the mounting holes, the balls and the springs are one-to-one corresponding.

[0008] Further, three mounting holes are respectively arranged on the outer side walls of the two ends of the mobile lens barrel and are uniformly distributed in the circumferential direction.

[0009] Further, the focusing mechanism includes lead screw, focusing nut and bearing seat, the two ends of the lead screw are supported on the outer side wall of the outer lens barrel through the bearing seat and correspond to the hole for avoidance, the two ends of the lead screw are rotationally matched with the bearing seat, the focusing nut is threadedly matched with the lead screw, the focusing nut is connected with the mobile lens barrel through connecting block, and the connecting block is located in the hole for avoidance and can slide along the length direction of the hole for avoidance.

[0010] Further, the two ends of the lead screw are supported on the bearing seat through bearing.

[0011] The utility model has the advantages that:

[0012] The rolling suspension optical focusing structure provided by this utility model is simple in structure and easy to use. The ball bearing support can greatly reduce the contact area between the moving lens barrel and the outer lens barrel, thereby greatly reducing the friction force when the moving lens barrel moves along the axis of the outer lens barrel. At the same time, it also reduces the wear of the inner wall of the outer lens barrel, prevents the falling of wear debris into the outer lens barrel, avoids the contamination of the lens in the optical cavity, and improves the cleanliness and service life of the optical lens. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the rolling suspension optical focusing structure provided in an embodiment of this utility model;

[0015] Figure 2 A cross-sectional view of the rolling suspension optical focusing structure provided in an embodiment of this utility model;

[0016] Figure 3 for Figure 2 Cross-sectional view at point AA;

[0017] Figure 4 for Figure 2 A magnified view of a section at point B.

[0018] In the figure: 1-Outer lens barrel; 11-Allowing hole; 2-Moving lens barrel; 21-Ball bearing; 22-Mounting hole; 23-Spring; 3-Focusing mechanism; 31-Lead screw; 32-Focusing nut; 33-Bearing seat; 34-Bearing; 35-Connecting block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0020] In the description of the utility model, it needs to be explained that the terms "inner", "outer" and the like indicate the position or location relationship based on the position or location relationship shown in the drawings, or the position or location relationship commonly used when the utility model product is used, or the position or location relationship commonly understood by the person skilled in the art, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the utility model.

[0021] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements, the person skilled in the art can understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0022] Reference Figures 1-4 As shown in the utility model embodiment, a rolling suspension optical focusing structure is provided, which comprises an outer lens barrel 1, a moving lens barrel 2 and a focusing mechanism 3.

[0023] The moving lens barrel 2 is supported inside one end of the outer lens barrel 1 through the ball 21, and there is a small gap between the outer side wall of the moving lens barrel 2 and the inner side wall of the outer lens barrel 1, and the moving lens barrel 2 can move along the axis direction of the outer lens barrel 1 under stress. A plurality of mounting holes 22 for placing the ball 21 are arranged on the outer side wall of both ends of the moving lens barrel 2, and the mounting holes 22 on each end are distributed in the circumferential direction. In this embodiment, three mounting holes 22 are arranged on each end of the moving lens barrel 2, and the three mounting holes 22 are uniformly distributed in the circumferential direction. Of course, the number of mounting holes 22 can also be more than three, and the plurality of mounting holes 22 can also be unevenly distributed. A spring 23 is arranged in each mounting hole 22, and a ball 21 is arranged at the opening of each mounting hole 22. The spring 23 abuts against the ball 21, and the spring 23 pushes against the ball 21 so that the ball 21 can abut against the inner side wall of the outer lens barrel 1 precisely, thereby ensuring that the moving lens barrel 2 is not easy to shake, and the contact area between the moving lens barrel 2 and the outer lens barrel 1 can be greatly reduced through the support of the ball 21, thereby greatly reducing the friction when the moving lens barrel 2 moves along the axis direction of the outer lens barrel 1, and also reducing the wear of the inner wall of the outer lens barrel 1, and the lens in the optical cavity will not fall off and pollute the lens in the optical cavity, thereby improving the cleanliness and service life of the optical lens.

[0024] The side wall of the outer lens barrel 1 is provided with a avoiding hole 11 at the position corresponding to the moving lens barrel 2, the avoiding hole 11 is a strip-shaped hole, the ball 21 is staggered with the avoiding hole 11, and the ball 21 is prevented from falling off from the avoiding hole 11.

[0025] The focusing mechanism 3 is arranged at the avoiding hole 11 and connected with the moving lens barrel 2.

[0026] The focusing mechanism 3 comprises a screw rod 31, a focusing nut 32 and a bearing seat 33, both ends of the screw rod 31 are supported on the outer side wall of the outer lens barrel 1 through the bearing seat 33 and correspond to the avoiding hole 11, both ends of the screw rod 31 are rotationally matched with the bearing seat 33, in order to reduce the friction when the screw rod 31 rotates, both ends of the screw rod 31 are supported on the bearing seat 33 through bearings 34, the focusing nut 32 is threadedly matched with the screw rod 31, the focusing nut 32 is connected with the outer side wall of the moving lens barrel 2 through a connecting block 35, the connecting block 35 is located in the avoiding hole 11 and can slide along the length direction of the avoiding hole 11, both sides of the connecting block 35 abut against the inner side wall of the avoiding hole 11 and are slidingly matched, so that the rotation of the focusing nut 32 during movement can be prevented. Rotating the screw rod 31 can drive the focusing nut 32 to move along the axis direction of the screw rod 31, so as to drive the moving lens barrel 2 to move along the axis direction of the outer lens barrel 1, and focusing is realized.

[0027] The utility model is not limited to the above optional implementation, anyone can draw other various forms of product under the enlightenment of the utility model, but no matter make any change in its shape or structure, any technical scheme falling into the scope defined by the utility model claims falls in the protection scope of the utility model.

Claims

1. A rolling levitation optical focusing structure, characterized by: The outer lens barrel, the moving lens barrel and the focusing mechanism are included, the moving lens barrel is supported inside one end of the outer lens barrel by the ball, the side wall of the outer lens barrel is provided with a avoiding hole at the position corresponding to the moving lens barrel, and the focusing mechanism is arranged at the avoiding hole and connected with the moving lens barrel.

2. The rolling levitation optical focusing structure of claim 1, wherein: The outer side wall of the moving lens barrel is provided with a mounting hole, the ball is arranged at the hole opening of the mounting hole, and the spring for pressing the ball is further arranged in the mounting hole.

3. The rolling levitation optical focusing structure of claim 2, wherein: The outer side wall of the moving lens barrel is provided with a mounting hole, the ball is arranged at the hole opening of the mounting hole, and the spring for pressing the ball is further arranged in the mounting hole.

4. The rolling levitation optical focusing structure of claim 3, wherein: The outer side wall of the moving lens barrel is provided with a mounting hole, the ball is arranged at the hole opening of the mounting hole, and the spring for pressing the ball is further arranged in the mounting hole.

5. The rolling levitation optical focusing structure of claim 1, wherein: The focusing mechanism includes a lead screw, a focusing nut and a bearing seat, the two ends of the lead screw are supported on the outer side wall of the outer lens barrel through the bearing seat and correspond to the avoiding hole, the two ends of the lead screw are rotationally matched with the bearing seat, the focusing nut is threadedly matched with the lead screw, the focusing nut is connected with the moving lens barrel through a connecting block, and the connecting block is located in the avoiding hole and can slide along the length direction of the avoiding hole.

6. The rolling levitation optical focusing structure of claim 5, wherein: The two ends of the lead screw are supported on the bearing seat through the bearing.

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