A lens barrel with good fogging effect

Abstract

The utility model discloses a lens barrel with good air trapping effect relates to lens barrel technical field, including lens barrel main part, lens and a plurality of annular plates, the one side of lens main part is provided with mounting hole, the lens is fixedly connected in the inside of mounting hole, the inside of lens barrel main part is provided with hollow chamber, the inner wall of lens main part is equipped with a plurality of nano carbon black coating, every annular plate is arranged along the inner wall axial interval of lens barrel main part. The utility model is through 2-4 annular plates and divides the lens barrel interior into independent air chamber, cooperates honeycomb air flow rectifier net, can buffer air flow fluctuation, makes adjacent air chamber air flow velocity difference less than or equal to 0.05m / s, reduces the turbulence incidence rate of traditional non -separate structure, this design confines the air flow in the subsection space, reduces the overall flow that environmental temperature change and vibration caused, has solved the problem of uneven refraction that light causes air flow turbulence, and the imaging definition is promoted.

Description

Technical Field

[0001] This utility model relates to the field of lens barrel technology, specifically to a lens barrel with good air trapping effect. Background Technology

[0002] An optical lens is a precision optical component composed of multiple optical elements, used to focus, refract, or reflect light to image objects onto a photosensitive element. The lens barrel, as the core supporting component of the optical lens, directly affects the lens's ability to suppress stray light and the stability of its internal airflow.

[0003] Among them, the lens barrel of an optical lens with announcement number CN221261361U includes a first barrel and a second barrel. The first barrel has a first opening, a first cavity and a connecting port that pass through it in sequence along its length. The first barrel has a connecting part at one end near the connecting port. The second barrel has a second opening, a second cavity and a connecting port that pass through it in sequence along its length. The connecting part is located in the connecting port and the connecting port is connected to the second cavity.

[0004] However, the airflow inside the barrel of existing optical lenses is easily affected by changes in ambient temperature and external vibrations, resulting in turbulence and uneven light refraction, which causes blurry images. At the same time, the inner wall lacks a targeted light-shielding design, has high light reflectivity, and is prone to producing secondary images. Utility Model Content

[0005] In view of the problems existing in the lens barrel of the above-mentioned optical lens, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a lens barrel with good air trapping effect, which solves the problem that the airflow inside the lens barrel of existing optical lenses is easily affected by changes in ambient temperature and external vibration interference, resulting in turbulence, uneven light refraction, and thus blurry images; at the same time, the inner wall lacks a targeted light-blocking design, has high light reflectivity, and is prone to producing secondary images.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An endoscope barrel with good air trapping effect includes an endoscope barrel body, a lens, and multiple annular plates. A mounting hole is provided on one side of the endoscope barrel body, and the lens is fixedly connected to the inside of the mounting hole. A hollow cavity is formed inside the endoscope barrel body, and the inner wall of the endoscope barrel body is coated with multiple nano-carbon black coatings. Each annular plate is axially spaced along the inner wall of the endoscope barrel body, and multiple through holes are formed on the surface of each annular plate. A honeycomb-shaped airflow rectifier is fixedly connected inside each through hole, and an independent air chamber is formed between two adjacent annular plates. The inner wall of the hollow cavity is coated with aerogel.

[0009] Preferably, the thickness of the nano-carbon black coating is 0.5-1 μm, and the absorption rate is ≥95%, which is used to reduce the light reflectivity of the inner wall.

[0010] Preferably, the honeycomb airflow rectifier mesh has a pore size of 50-100μm, which is used to filter out tiny particles in the airflow and buffer airflow fluctuations, so that the airflow velocity difference between adjacent air chambers is ≤0.05m / s.

[0011] Preferably, the aerogel has a thermal conductivity of ≤0.02W / m·K and is filled in the hollow cavity inside the main body of the lens barrel, thus serving both sealing and heat insulation functions.

[0012] Preferably, the number of annular plates is 2-4, the spacing between adjacent annular plates is 10-15 mm, and the air chamber volume is 5-8 cm³. 3 It is used to stabilize the internal airflow.

[0013] Preferably, the inner wall of the lens barrel body is provided with multiple sets of spiral microgrooves.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model divides the inside of the lens barrel into independent air chambers by 2-4 annular plates. Combined with a honeycomb airflow rectifier, it can buffer airflow fluctuations and make the airflow velocity difference between adjacent air chambers ≤0.05m / s. Compared with the traditional undivided structure, the turbulence occurrence rate is reduced. This design confines the airflow within the segmented space, reduces the overall flow caused by changes in ambient temperature and vibration, solves the problem of uneven refraction of light caused by airflow turbulence, and improves the image clarity.

[0016] 2. This utility model can significantly reduce light reflectivity through the nano carbon black coating on the inner wall of the lens barrel, and improve the stray light suppression rate compared with traditional lens barrels, effectively avoiding secondary image interference; the aerogel filling the hollow cavity has both heat insulation and sealing functions, which can not only block the influence of external temperature fluctuations on internal airflow, but also reduce vibration transmission, further ensuring stable airflow and making it suitable for high-precision optical imaging scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 For the present utility modelFigure 1 A sectional view;

[0020] Figure 3 For the present utility model Figure 2 A three-dimensional view of the central ring plate.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Lens barrel; 2. Lens; 3. Nano carbon black coating; 4. Aerogel; 5. Circular plate; 6. Honeycomb airflow rectifier mesh. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model discloses a lens barrel with good air trapping effect.

[0025] This utility model provides, for example Figures 1-3 The illustrated endoscope barrel with good air trapping effect includes an endoscope body 1, a lens 2, and multiple annular plates 5. A mounting hole is provided on one side of the endoscope body 1, and the lens 2 is fixedly connected to the inside of the mounting hole. A hollow cavity is formed inside the endoscope body 1, and multiple nano-carbon black coatings 3 are provided on the inner wall of the endoscope body 1. Each annular plate 5 is axially spaced along the inner wall of the endoscope body 1, and multiple through holes are provided on the surface of the annular plate 5. A honeycomb airflow rectifier mesh 6 is fixedly connected inside each through hole, and an independent air chamber is formed between two adjacent annular plates 5. Aerogel 4 is provided on the inner wall of the hollow cavity. The number of annular plates 5 is 2-4, the spacing between adjacent annular plates 5 is 10-15 mm, and the air chamber volume is 5-8 cm³. 3 The honeycomb airflow rectifier mesh 6 has a pore size of 50-100μm and is used to stabilize the internal airflow. It is used to filter out small particles in the airflow and buffer airflow fluctuations, so that the airflow velocity difference between adjacent air chambers is ≤0.05m / s.

[0026] The inside of the lens barrel is formed by 2-4 axially spaced annular plates to create multiple independent air chambers, which divides the overall airflow into segmented independent spaces, reducing the overall flow range of the airflow inside the lens barrel. The through holes on the surface of the annular plates are equipped with honeycomb airflow straightening mesh. When the airflow passes through, the honeycomb structure of the straightening mesh disperses the airflow impact force and buffers the airflow fluctuations, so that the airflow velocity difference between adjacent air chambers is controlled within ≤0.05m / s, thus avoiding the generation of turbulence.

[0027] To improve image quality, such as Figures 1-2 As shown, the thickness of the nano carbon black coating 3 is 0.5-1μm, and the absorption rate is ≥95%, which is used to reduce the light reflectivity of the inner wall.

[0028] The nano-carbon black coating 3 on the inner wall can absorb a large amount of light that shines on the inner wall, reduce light reflectivity, reduce secondary images caused by reflection, and avoid stray light interfering with imaging.

[0029] To prevent the inside of the microscope tube from getting hot, such as Figures 1-2 As shown, the thermal conductivity of aerogel 4 is ≤0.02W / m·K. It fills the hollow cavity inside the main body of the lens barrel 1 and has both sealing and heat insulation functions.

[0030] The inner wall of the hollow cavity inside the main body of the microscope tube 1 is filled with aerogel 4, which has a thermal conductivity of ≤0.02W / m·K. This aerogel serves both sealing and thermal insulation functions. The thermal insulation effectively blocks the influence of external temperature changes on the inside of the microscope tube, reducing airflow convection caused by temperature differences. The sealing properties reduce the interference of external vibrations on internal airflow, minimizing the causes of airflow fluctuations at their source.

[0031] To reduce airflow turbulence, such as Figure 2 As shown, the inner wall of the main body 1 of the microscope tube has multiple sets of spiral microgrooves.

[0032] The spiral microgrooves surrounding the inner wall guide the airflow along the spiral path, reducing airflow turbulence.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lens barrel with good air trapping effect, comprising a lens barrel body (1), a lens (2), and a plurality of annular plates (5), characterized in that, The lens barrel body (1) has a mounting hole on one side, and the lens (2) is fixedly connected to the inside of the mounting hole. The lens barrel body (1) has a hollow cavity inside, and the inner wall of the lens barrel body (1) is provided with multiple nano carbon black coatings (3). Each annular plate (5) is axially spaced along the inner wall of the lens barrel body (1). The surface of the annular plate (5) has multiple through holes, and each through hole is fixedly connected with a honeycomb airflow rectifier mesh (6). An independent air chamber is formed between two adjacent annular plates (5). The inner wall of the hollow cavity is provided with aerogel (4).

2. The endoscope tube with good air trapping effect according to claim 1, characterized in that, The nano carbon black coating (3) has a thickness of 0.5-1 μm and an absorption rate of ≥95%, and is used to reduce the light reflectivity of the inner wall.

3. The endoscope tube with good air trapping effect according to claim 1, characterized in that, The honeycomb airflow rectifier mesh (6) has a pore size of 50-100μm and is used to filter out tiny particles in the airflow and buffer airflow fluctuations so that the airflow velocity difference between adjacent air chambers is ≤0.05m / s.

4. The endoscope tube with good air trapping effect according to claim 1, characterized in that, The aerogel (4) has a thermal conductivity of ≤0.02W / m·K and is filled in the hollow cavity inside the main body of the lens tube (1), serving both sealing and heat insulation functions.

5. The endoscope tube with good air trapping effect according to claim 1, characterized in that, The number of annular plates (5) is 2-4, the spacing between adjacent annular plates (5) is 10-15 mm, and the volume of the air chamber is 5-8 cm³. 3 It is used to stabilize the internal airflow.

6. The endoscope tube with good air trapping effect according to claim 1, characterized in that, The inner wall of the main body of the lens tube (1) is provided with multiple sets of spiral microgrooves.

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