Optical lens fixing structure
Through the connection between the threaded barrel and the lens barrel and the cooperation of the elastic elements, the fixing force of the lens is adjusted, which solves the problem of vulnerability to lenses in the prior art, and achieves stable fixation of lenses of different materials.
Patent Information
- Application Number
- CN202422388361.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The existing optical lens fixing method can easily cause damage to lenses with lower strength, and the fixing force is difficult to adjust, which cannot adapt to the fixing needs of lenses of different materials.
The threaded barrel is connected to the lens barrel. Through the movement of the press ring and the rotation of the internal threaded ring, the fixing force is adjusted by the deformation of the elastic element, and combined with the guide column and the limit ring structure, the lens is stabilized and fixed.
While ensuring the lens is securely fixed, it avoids damage to the lens by excessive fixing force, and is suitable for fixing lenses of different materials.
Smart Images
Figure CN223139927U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical lens fixing, and particularly relates to an optical lens fixing structure. Background Technique
[0002] The optical lens is an essential component in the machine vision system, directly affecting the quality of the imaging, the implementation and effect of the algorithm. The optical lens is a lens or a lens group used in an optical system, and its function is to focus or image light. They are widely used in various fields, including photography, videography, microscopes, telescopes, glasses, and lithography, etc. The optical lens is usually made of lens materials such as glass, plastic, or optically transparent crystals. The fixing methods of the optical lens mainly include the beading method, the elastic part method, the retaining ring method, and the gluing method; in the prior art, in order to facilitate the disassembly and replacement of the optical lens, the retaining ring method is often used to fix the position of the optical lens. The retaining ring with external threads or internal threads is connected to the lens frame with corresponding threads, and the optical lens is tightened by continuous screwing. The fixing firmness of the optical lens mainly depends on the number of rotation turns of the retaining ring, and it is easy to have the situation that the optical lens is under excessive force, resulting in damage to some optical lenses with lower strength. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide an optical lens fixing structure, adjust the fixing force received by the optical lens through the deformation of the elastic element, while ensuring the firm fixing of the optical lens, avoid damage to the optical lens caused by excessive fixing force, and is applicable to fixing optical lenses of different materials, and can effectively solve the problems in the background technique.
[0004] To achieve the above object, the utility model provides the following technical scheme: an optical lens fixing structure, including a lens barrel and an adjusting mechanism;
[0005] Lens barrel: The front end thereof is an external thread structure, and a threaded barrel is threadedly connected to the front end of the lens barrel, and a first retaining ring is provided at the rear end of the threaded barrel;
[0006] Adjusting mechanism: It includes a connecting ring and an internal thread ring. The connecting ring is horizontally slidably connected to the inner arc surface of the threaded barrel. A second retaining ring is provided at the front end of the connecting ring. The internal thread ring is threadedly connected to the outer arc surface of the lens barrel, and the internal thread ring is connected to the rear end of the connecting ring. The position of the optical lens is fixed by the movement of the retaining ring, and the fixing force received by the optical lens is adjusted through the deformation of the elastic element, while ensuring the firm fixing of the optical lens, avoid damage to the optical lens caused by excessive fixing force, and is applicable to fixing optical lenses of different materials.
[0007] Furthermore, the adjustment mechanism includes a slip ring and a guide column, and the guide column is respectively arranged at the rear end of the lens barrel. The slip ring is laterally slidably connected between the outer arc surfaces of the guide column, and the rear end of the connecting ring is fixedly connected to the slip ring to provide guiding support for the movement of the connecting ring.
[0008] Furthermore, the adjustment mechanism also includes a spring, a limit ring and a slide plate. The limit ring is laterally slidably connected between the outer arc surfaces of the guide columns. Springs are respectively provided between the limit ring and the sliding ring. The springs are respectively movably sleeved on the outer arc surfaces of the guide columns. The outer arc surfaces of the limit rings are respectively provided with slide plates. The left ends of the slide plates respectively pass through the give-way sliding holes on the surface of the lens barrel, and the elastic force of the spring is used to apply force to fix the optical lens.
[0009] Furthermore, the adjustment mechanism also includes a limiting slide, which is respectively arranged at the left end of the slide. The limiting slide is slidably connected to the rotation groove on the right side of the internal thread ring to facilitate the connection between the slide and the internal thread ring.
[0010] Furthermore, the rear end of the lens barrel is an internal thread structure, which facilitates the connection between the lens barrel and external equipment.
[0011] Furthermore, a rotation groove is provided on the outer arc surface of the internal thread ring, a slider is slidably connected inside the rotation groove, and a scale plate is provided at the rear end of the lens barrel. The slider is laterally slidably connected between the two scale plates to determine the moving distance of the internal thread ring.
[0012] Furthermore, the relative inner sides of the pressing ring 2 and the pressing ring 1 are provided with rubber pads to seal between the pressing ring and the optical lens.
[0013] Compared with the prior art, the beneficial effects of the utility model are: the optical lens fixing structure has the following advantages:
[0014] Through the threaded connection between the threaded barrel and the lens barrel, the pressure ring one is driven to move backward and cooperate with the pressure ring two to fix the optical lens, and then the internal thread ring is rotated to contract the spring to generate elastic force. The elastic force of the spring is used to increase the fixing force of the optical lens, and the position of the optical lens is fixed by the movement of the pressure ring. The fixing force of the optical lens is adjusted by the deformation of the elastic element. While ensuring that the optical lens is firmly fixed, it avoids damage to the optical lens caused by excessive fixing force. The optical lens is suitable for fixing optical lenses of different materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the front view cross section of the overall device of the utility model;
[0017] Figure 3This is a schematic enlarged view of the structure at position A of the present utility model.
[0018] In the figure: 1 lens barrel, 2 threaded barrel, 3 first retaining ring, 4 second retaining ring, 5 adjusting mechanism, 51 connecting ring, 52 sliding ring, 53 guiding column, 54 spring, 55 limiting ring, 56 sliding plate, 57 limiting sliding plate, 58 internal threaded ring, 6 rotating groove, 7 slider, 8 scale plate, 9 rubber pad. Specific embodiments
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0020] Please refer to Figures 1-3 , this embodiment provides a technical solution: an optical lens fixing structure, including a lens barrel 1 and an adjusting mechanism 5;
[0021] Lens barrel 1: Its front end is an external thread structure, which is convenient for the connection of the lens barrel 1 with the fixing component. The front end of the lens barrel 1 is threadedly connected with a threaded barrel 2. A first retaining ring 3 is provided at the rear end of the threaded barrel 2. By the threaded connection between the threaded barrel 2 and the lens barrel 1, the first retaining ring 3 is driven to move backward to limit the position of the optical lens. The rear end of the lens barrel 1 is an internal thread structure, which is convenient for the connection of the lens barrel 1 with the outside;
[0022] Adjustment mechanism 5: It includes a connecting ring 51 and an internal thread ring 58. The connecting ring 51 is slidably connected to the inner arc surface of the threaded barrel 2 in a transverse direction. The front end of the connecting ring 51 is provided with a pressing ring 24. The internal thread ring 58 is threadedly connected to the outer arc surface of the lens barrel 1. The internal thread ring 58 is connected to the rear end of the connecting ring 51. The adjustment mechanism 5 includes a slip ring 52 and a guide column 53. The guide columns 53 are respectively arranged at the rear end of the lens barrel 1. The outer arc surfaces of the guide columns 53 are slidably connected with the slip ring 52 in a transverse direction. The rear end of the connecting ring 51 is fixedly connected to the slip ring 52. The adjustment mechanism 5 also includes a spring 54 and a limit ring 55 and slide plate 56, the limiting ring 55 is slidably connected between the outer arc surface of the guide column 53, a spring 54 is respectively arranged between the limiting ring 55 and the sliding ring 52, the spring 54 is respectively movably sleeved on the outer arc surface of the guide column 53, the outer arc surface of the limiting ring 55 is respectively provided with a slide plate 56, the left end of the slide plate 56 passes through the sliding hole on the surface of the lens barrel 1, the adjustment mechanism 5 also includes a limiting slide plate 57, the limiting slide plate 57 is respectively arranged at the left end of the slide plate 56, the limiting slide plate 57 is slidably connected to the rotation groove on the right side of the internal thread ring 58, the internal thread ring 58 is rotated, and the internal thread ring 58 is rotated through the internal thread The threaded connection between the ring 58 and the lens barrel 1 drives the internal threaded ring 58 to move leftward, and the limiting slide plate 57 slides in the rotation groove on the right side of the internal threaded ring 58, driving the slide plate 56 and the limiting ring 55 to move leftward, so that the spring 54 contracts to generate elastic force. Under the elastic force of the spring 54, the pressure ring 24 is used to apply a force to the left on the optical lens to increase the fixing force of the optical lens. The greater the leftward movement distance of the internal threaded ring 58, the greater the contraction amplitude of the spring 54, and the greater the force applied by the pressure ring 24 to the optical lens, which is convenient for determining the fixing force of the optical lens. The outer arc surface of 8 is provided with a rotation groove 6, and a slider 7 is slidably connected inside the rotation groove 6. The rear end of the lens barrel 1 is respectively provided with a scale plate 8, and the slider 7 is slidably connected between the two scale plates 8. During the rotation of the internal threaded ring 58, under the limit of the scale plate 8, the slider 7 slides in the rotation groove 6, and the slider 7 moves left and right with the internal threaded ring 58. The moving distance of the internal threaded ring 58 is determined by the position of the slider 7 on the scale plate 8. Rubber pads 9 are provided on the relative inner sides of the pressing ring 2 4 and the pressing ring 1 3 to seal the pressing ring 2 4, the pressing ring 1 3 and the optical lens.
[0023] The working principle of an optical lens fixing structure provided by the present utility model is as follows: When in use, place the optical lens inside the lens barrel 1. Through the threaded connection between the threaded barrel 2 and the lens barrel 1, drive the first retaining ring 3 to move backward. Through the cooperation between the first retaining ring 3 and the second retaining ring 4, limit the position of the optical lens. Then rotate the internal threaded ring 58. Through the threaded connection between the internal threaded ring 58 and the lens barrel 1, drive the internal threaded ring 58 to move leftward. The limit slide plate 57 slides in the rotating groove on the right side surface of the internal threaded ring 58, driving the slide plate 56 and the limit ring 55 to move leftward, causing the spring 54 to contract and generate elastic force. Under the elastic force of the spring 54, use the second retaining ring 4 to apply a leftward acting force on the optical lens, increasing the fixing force of the optical lens. The greater the leftward movement distance of the internal threaded ring 58, the greater the contraction amplitude of the spring 54, and the greater the acting force applied by the second retaining ring 4 on the optical lens, facilitating the determination of the fixing force of the optical lens.
[0024] The above are only embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.
Claims
1. An optical lens fixing structure, characterized in that: It comprises a lens barrel (1) and an adjustment mechanism (5); The lens barrel (1) has an external thread structure at its front end, the front end of the lens barrel (1) is threadedly connected to a threaded barrel (2), and a pressure ring (3) is provided at the rear end of the threaded barrel (2); The adjusting mechanism (5) comprises a connecting ring (51) and an internal thread ring (58), wherein the connecting ring (51) is slidably connected to the inner arc surface of the threaded barrel (2) in a transverse direction, a second pressing ring (4) is provided at the front end of the connecting ring (51), the internal thread ring (58) is threadedly connected to the outer arc surface of the lens barrel (1), and the internal thread ring (58) is connected to the rear end of the connecting ring (51).
2. The optical lens fixing structure according to claim 1, characterized in that: The adjustment mechanism (5) comprises a slip ring (52) and a guide column (53), wherein the guide column (53) is respectively arranged at the rear end of the lens barrel (1), the slip ring (52) is transversely slidably connected between the outer arc surfaces of the guide column (53), and the rear end of the connecting ring (51) is fixedly connected to the slip ring (52).
3. The optical lens fixing structure according to claim 2, characterized in that: The adjustment mechanism (5) further comprises a spring (54), a stop ring (55) and a slide plate (56); the stop ring (55) is laterally slidably connected between the outer arc surfaces of the guide column (53); a spring (54) is respectively arranged between the stop ring (55) and the slide ring (52); the spring (54) is respectively movably sleeved on the outer arc surface of the guide column (53); the outer arc surface of the stop ring (55) is respectively provided with a slide plate (56); the left end of the slide plate (56) respectively passes through a clearance slide hole on the surface of the lens barrel (1).
4. An optical lens fixing structure according to claim 3, characterized in that: The adjustment mechanism (5) further comprises a limiting slide plate (57), which is respectively arranged at the left end of the slide plate (56), and the limiting slide plate (57) is slidably connected to the rotation groove on the right side of the internal thread ring (58).
5. An optical lens fixing structure according to claim 1, characterized in that: The rear end of the lens barrel (1) is an internal thread structure.
6. An optical lens fixing structure according to claim 1, characterized in that: The outer arc surface of the internal thread ring (58) is provided with a rotation groove (6), and a slider (7) is slidably connected inside the rotation groove (6). The rear end of the lens barrel (1) is respectively provided with a scale plate (8), and the slider (7) is laterally slidably connected between the two scale plates (8).
7. An optical lens fixing structure according to claim 1, characterized in that: The relative inner sides of the second pressing ring (4) and the first pressing ring (3) are both provided with rubber pads (9).