Threaded focusing lens barrel

Abstract

The utility model discloses a thread focusing lens barrel, which relates to the field of focusing lens barrel devices and comprises two groups of objective lens barrels, sliding barrels are connected in the objective lens barrels in a sliding manner, and a focusing barrel is arranged between the two groups of objective lens barrels. According to the threaded focusing lens barrel, the locking assembly and the driving assembly are installed at one end of the focusing barrel, the focusing barrel can be fixed to a specific position through cooperation between the locking assembly and the driving assembly, focal length offset caused by accidental touch and the like is prevented, clear imaging is kept all the time, meanwhile, the focal length can be kept stable through the locking assembly, and the focusing effect is improved. Operators do not need to frequently adjust the focal length, the working efficiency is greatly improved, through meshing locking of the driving gear and the locking toothed plate, the large meshing force can effectively resist accidental rotation of the focusing hand wheel caused by external force such as equipment vibration and external collision, it is ensured that the focusing position is accurately fixed, and the imaging stability is maintained; and accurate position adjustment and locking are achieved, and the using effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of focusing lens barrel technology, specifically a threaded focusing lens barrel. Background Technology

[0002] A threaded focusing lens barrel is a lens barrel component used in optical equipment. It achieves focusing by rotating a thread. By rotating the lens barrel, the thread drives the lens barrel to move back and forth along the optical axis, thereby changing the distance between the lens and other optical elements, thus adjusting the focal length and making the image clear.

[0003] Existing focusing mechanisms, after adjusting the focus using a focusing handwheel, are easily affected by slight external disturbances, causing the handwheel to rotate and altering the lens's focal length. This results in a blurry image, failing to provide users with a stable and clear visual experience. In scenarios requiring high image quality, such as professional photography and scientific research observations, this blurry and unstable imaging severely impacts the accuracy and efficiency of the work. Furthermore, changes in focal length may lead to deviations in measurement results, affecting the reliability and comparability of the data, thus making the lens inconvenient to use. To address the shortcomings of existing technologies, we propose a threaded focusing lens barrel to solve the aforementioned problems. Utility Model Content

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a threaded focusing lens tube, comprising two sets of objective lens tubes, wherein a sliding cylinder is slidably connected inside the objective lens tube, a focusing tube is provided between the two sets of objective lens tubes, a threaded cylinder is threadedly connected inside the focusing tube, and the sliding cylinders on both sides are connected to the threaded cylinder through a connecting component;

[0005] A locking assembly is provided at one end of the focusing cylinder. The locking assembly consists of a drive gear and a locking tooth plate. The drive gear is connected to the focusing cylinder. The locking tooth plate is located on both sides of the drive gear. The drive gear and the locking tooth plate mesh with each other to lock the position of the adjusted slide cylinder. A drive assembly is provided at the locking assembly. The drive assembly drives the two sets of locking tooth plates to slide closer to each other.

[0006] Preferably, a fixing cylinder is fixedly installed between the two sets of objective lens tubes, the focusing cylinder is rotatably connected inside the fixing cylinder, one end of the focusing cylinder passes through the inner wall of the fixing cylinder and is fixedly connected to the drive gear, and a drive handwheel is fixedly connected to the outer wall of the drive gear.

[0007] Preferably, the connecting assembly includes a mounting cylinder and a connecting plate, wherein the mounting cylinder is fixedly mounted on the end of the threaded cylinder, and the connecting plate is fixedly mounted between the mounting cylinder and the sliding cylinder.

[0008] Preferably, the drive assembly includes a fixed frame, a fixed rod, a micro motor, a drive button, a bidirectional screw, a drive block, and a connecting rod, with the fixed rod fixedly installed on the outer wall of the fixed cylinder.

[0009] Preferably, the fixing frame is fixedly installed on the outer wall of the fixing rod, the bidirectional screw is rotatably connected inside the fixing frame, and the driving block is slidably sleeved on both sides of the outer peripheral wall of the bidirectional screw.

[0010] Preferably, the connecting rod is fixedly installed on the top of the drive block, and the top of the drive block is fixedly connected to the locking tooth plate.

[0011] Preferably, the micro motor is fixedly mounted on the side wall of the fixed frame, the output end of the micro motor is fixedly connected to the end of the bidirectional screw, the drive button is mounted on the outer wall of the fixed frame, and the drive button is electrically connected to the micro motor.

[0012] This utility model discloses a threaded focusing lens barrel, which has the following beneficial effects: By installing a locking component and a driving component at one end of the focusing barrel, the locking component and the driving component work together to fix the focusing barrel in a specific position, preventing focal length shift caused by accidental contact, thus maintaining a clear image at all times. Simultaneously, the locking component keeps the focal length stable, eliminating the need for frequent focal length adjustments by the operator, allowing more time and energy to be devoted to actual observation and shooting, greatly improving work efficiency. Furthermore, the engagement of the driving gear and the locking tooth plate provides a strong locking force that effectively resists accidental rotation of the focusing handwheel caused by equipment vibration, external collisions, or other external forces, ensuring precise fixing of the focusing position, maintaining image stability, and achieving precise position adjustment and locking, thus guaranteeing the desired performance. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the inside of the fixed cylinder of this utility model;

[0016] Figure 3 This is a schematic diagram showing the installation positions of the locking component and the fixing cylinder of this utility model;

[0017] Figure 4This is a schematic diagram showing the installation positions of the locking component and the driving component of this utility model;

[0018] Figure 5 This is a schematic diagram of the connection structure between the locking tooth plate and the drive assembly of this utility model;

[0019] Figure 6 This utility model Figure 2 Enlarged view of part A in the image.

[0020] In the diagram: 1. Objective lens tube; 101. Fixing tube; 2. Sliding tube; 3. Focusing tube; 301. Drive handwheel; 4. Threaded tube; 5. Connecting assembly; 501. Mounting tube; 502. Connecting plate; 6. Locking assembly; 601. Drive gear; 602. Locking toothed plate; 7. Drive assembly; 701. Fixing frame; 702. Fixing rod; 703. Micro motor; 704. Drive button; 705. Bidirectional screw; 706. Drive block; 707. Connecting rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] This utility model discloses a threaded focusing lens barrel.

[0024] According to the appendix Figure 1-6 As shown, it includes two objective lens tubes 1, with a sliding cylinder 2 slidably connected inside the objective lens tube 1. A focusing tube 3 is arranged between the two objective lens tubes 1, and a threaded cylinder 4 is threadedly connected inside the focusing cylinder 3. The two sliding cylinders 2 are connected to the threaded cylinder 4 through a connecting assembly 5. Lenses are arranged inside both the objective lens tube 1 and the sliding cylinder 2, so that the position of the lens group inside the objective lens tube 1 and the sliding cylinder 2 changes, thereby changing the refraction path and focal point of light to adapt to the focal point requirements of different shooting distances and scenes.

[0025] A locking assembly 6 is provided at one end of the focusing tube 3. The locking assembly 6 consists of a drive gear 601 and a locking toothed plate 602. The drive gear 601 is connected to the focusing tube 3, and the locking toothed plate 602 is located on both sides of the drive gear 601. The drive gear 601 and the locking toothed plate 602 mesh with each other to lock the position of the adjusted slide tube 2. A drive assembly 7 is provided at the locking assembly 6. The drive assembly 7 drives the two sets of locking toothed plates 602 to slide closer to each other. In use, when adjusting the distance between the slide tube 2 and the objective lens tube 1, the locking toothed plates on both sides are first engaged. When 602 are in a state of mutual distance, by rotating the drive handwheel 301, the drive handwheel 301 drives the focusing tube 3 to rotate inside the fixed tube 101. Through the cooperation between the focusing tube 3 and the threaded tube 4, the threaded tube 4 can drive the sliding tubes 2 on both sides to slide and connect to the inside of the two objective lens tubes 1 respectively. This can change the position of the lens groups inside the objective lens tube 1 and the sliding tube 2, changing the refraction path and focal point of light to adapt to the focus requirements of different shooting distances and scenes, thus achieving focusing and meeting the needs of use.

[0026] A fixed cylinder 101 is fixedly installed between the two sets of objective lens tubes 1. The focusing tube 3 is rotatably connected inside the fixed cylinder 101. One end of the focusing tube 3 passes through the inner wall of the fixed cylinder 101 and is fixedly connected to the drive gear 601. A drive handwheel 301 is fixedly connected to the outer wall of the drive gear 601. After adjusting the position of the two sets of sliding cylinders 2, the locking gear plates 602 on both sides are driven to move closer to each other through the drive assembly 7, meshing with the two sides of the drive gear 601 to prevent the drive gear 601 from rotating. This fixes the adjusted focusing tube 3 inside the fixed cylinder 101, preventing... To prevent rotation, the locking component 6 prevents accidental touches by operators, slight vibrations of the equipment, or external environmental interference from causing a change in focus. Once the focus changes, the image becomes blurry. The locking component 6 can fix the focusing tube 3 in a specific position to prevent focus shift caused by accidental touches, thus maintaining a clear image at all times. At the same time, the locking component 6 can keep the focus stable, so operators do not need to frequently adjust the focus, thus allowing them to devote more time and energy to actual observation and shooting, greatly improving work efficiency.

[0027] The connecting assembly 5 includes a mounting cylinder 501 and a connecting plate 502. The mounting cylinder 501 is fixedly installed at the end of the threaded cylinder 4, and the connecting plate 502 is fixedly installed between the mounting cylinder 501 and the sliding cylinder 2. The connecting assembly 5 connects the sliding cylinder 2 on both sides to the threaded cylinder 4. Through the threaded connection between the threaded cylinder 4 and the focusing cylinder 3, the threaded cylinder 4 can simultaneously drive the two sets of sliding cylinders 2 to slide, ensuring that the images seen by the user's left and right eyes are consistent in terms of depth and distance perception. This allows for more accurate judgment of the position, size, and shape of objects, enhancing the three-dimensionality and spatial sense of observed objects. It can complete the focus adjustment of the two sets of lens barrels at one time, greatly reducing the time required for focusing, improving work efficiency, and allowing the observer to quickly focus. The target is clearly presented in the field of view, eliminating the need to adjust the focal length of the left and right lens barrels separately, saving reaction time and improving the speed and accuracy of target acquisition. This helps to obtain the required information in a timely manner. By pressing the drive button 704, the micro motor 703 is activated, driving the bidirectional screw 705 to rotate and connect to the fixed frame 701. This causes the drive blocks 706 on both sides to simultaneously drive the locking gear plates 602 on both sides to slide away from each other, so that the locking gear plates 602 no longer mesh with the drive gear 601. This allows the drive handwheel 301 to rotate the focusing tube 3 inside the fixed tube 101, adjusting the position of the lens group inside the objective lens tube 1 and the sliding tube 2, changing the refraction path and focal point of the light. For details, please refer to the appendix. Figure 4 .

[0028] The drive assembly 7 includes a fixed frame 701, a fixed rod 702, a micro motor 703, a drive button 704, a bidirectional screw 705, a drive block 706, and a connecting rod 707. The fixed rod 702 is fixedly installed on the outer wall of the fixed cylinder 101, and the fixed frame 701 is fixedly installed on the outer wall of the fixed rod 702. The bidirectional screw 705 is rotatably connected inside the fixed frame 701. The drive block 706 is slidably sleeved on both sides of the outer peripheral wall of the bidirectional screw 705. Through the meshing between the drive gear 601 and the locking tooth plate 602, the teeth of the drive gear 601 and the locking tooth plate 602 are interlocked, which can provide a large contact area and biting force. In the case of focusing and locking, this large biting force can effectively resist the accidental rotation of the focusing handwheel caused by external forces such as equipment vibration and external collision, ensuring the precise fixation of the focusing position, maintaining the stability of imaging, and realizing precise position adjustment and locking to ensure the effect of use.

[0029] The connecting rod 707 is fixedly installed on the top of the drive block 706. The top of the drive block 706 is fixedly connected to the locking tooth plate 602. The micro motor 703 is fixedly installed on the side wall of the fixed frame 701. The output end of the micro motor 703 is fixedly connected to the end of the bidirectional screw 705. The drive button 704 is installed on the outer wall of the fixed frame 701. The drive button 704 is electrically connected to the micro motor 703. The drive button 704 is used to control the micro motor 703 to work, so that the micro motor 703 drives the bidirectional screw 705 to rotate, thereby controlling the position of the two sets of locking tooth plates 602.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A threaded focusing lens barrel, comprising two objective lens barrels (1), wherein a sliding cylinder (2) is slidably connected inside the objective lens barrel (1), characterized in that: A focusing tube (3) is provided between the two sets of objective lens tubes (1), and a threaded tube (4) is connected to the inside of the focusing tube (3). The sliding tubes (2) on both sides are connected to the threaded tube (4) through a connecting assembly (5). A locking assembly (6) is provided at one end of the focusing cylinder (3). The locking assembly (6) consists of a drive gear (601) and a locking tooth plate (602). The drive gear (601) is connected to the focusing cylinder (3). The locking tooth plate (602) is located on both sides of the drive gear (601). The drive gear (601) and the locking tooth plate (602) mesh with each other to lock the position of the adjusted slide cylinder (2). A drive assembly (7) is provided at the locking assembly (6). The drive assembly (7) drives the two sets of locking tooth plates (602) to slide closer to each other.

2. The threaded focusing lens barrel according to claim 1, characterized in that: A fixed cylinder (101) is fixedly installed between the two sets of objective lens tubes (1). The focusing cylinder (3) is rotatably connected inside the fixed cylinder (101). One end of the focusing cylinder (3) passes through the inner wall of the fixed cylinder (101) and is fixedly connected to the drive gear (601). A drive handwheel (301) is fixedly connected to the outer wall of the drive gear (601).

3. A threaded focusing lens barrel according to claim 2, characterized in that: The connecting assembly (5) includes a mounting cylinder (501) and a connecting plate (502). The mounting cylinder (501) is fixedly installed at the end of the threaded cylinder (4), and the connecting plate (502) is fixedly installed between the mounting cylinder (501) and the sliding cylinder (2).

4. A threaded focusing lens barrel according to claim 3, characterized in that: The drive assembly (7) includes a fixed frame (701), a fixed rod (702), a micro motor (703), a drive button (704), a bidirectional screw (705), a drive block (706), and a connecting rod (707). The fixed rod (702) is fixedly installed on the outer wall of the fixed cylinder (101).

5. A threaded focusing lens barrel according to claim 4, characterized in that: The fixed frame (701) is fixedly installed on the outer wall of the fixed rod (702), the bidirectional screw (705) is rotatably connected inside the fixed frame (701), and the driving block (706) is slidably sleeved on both sides of the outer peripheral wall of the bidirectional screw (705).

6. A threaded focusing lens barrel according to claim 5, characterized in that: The connecting rod (707) is fixedly installed on the top of the drive block (706), and the top of the drive block (706) is fixedly connected to the locking tooth plate (602).

7. A threaded focusing lens barrel according to claim 4, characterized in that: The micro motor (703) is fixedly installed on the side wall of the fixed frame (701). The output end of the micro motor (703) is fixedly connected to the end of the bidirectional screw (705). The drive button (704) is installed on the outer wall of the fixed frame (701) and is electrically connected to the micro motor (703).

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