Length-adjustable objective lens connecting cylinder

Abstract

The utility model relates to the technical field of connecting cylinders, and particularly discloses a length-adjustable objective lens connecting cylinder, which is characterized by comprising a fixed cylinder, a protective cylinder is arranged on the outer side of the fixed cylinder, and the protective cylinder is fixedly connected with the fixed cylinder; a telescopic cylinder is arranged at the lower end of the fixed cylinder and connected with the fixed cylinder in a matched mode, a guide rail is arranged on one side of the telescopic cylinder and fixedly connected with the fixed cylinder, a sliding mechanism is arranged on the guide rail and fixedly connected with the telescopic cylinder, and the telescopic cylinder is driven by the sliding mechanism to slide up and down. The objective of the utility model is to maintain a stable and accurate optical path under different lengths so as to obtain clear and high-quality images.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting tubes, in particular to an objective lens connecting tube with adjustable length. Background Art

[0002] In the field of optical equipment, the performance and flexibility of objective lenses have a significant impact on image quality and application range. With the continuous development of science and technology and the increasing diversification of application needs, the functional requirements of objective lens adapters are also constantly increasing.

[0003] Conventional objective lens barrels are typically fixed in length and cannot be adjusted to meet specific needs. This significantly limits the scope and effectiveness of the objective lens. For example, at varying observation distances, sample sizes, or imaging requirements, a fixed-length objective lens barrel may not provide optimal imaging conditions, leading to issues such as insufficient image clarity, a limited field of view, or inability to accurately focus.

[0004] Among the disclosed patents, the patent number is CN202221001017.5, and the patent name is a length-adjustable microscope objective lens connecting tube. The beneficial effect is that by twisting the lens to move it along the second fixing ring, the length of the connecting tube of the objective lens can be adjusted, thereby improving the production efficiency of the microscope and reducing the production cost. The lens and the second fixing ring can be sealed by the arrangement of the first fixing ring and the sealing gasket, thereby improving the sealing of the microscope objective lens connecting tube, so as to better use the microscope objective lens connecting tube. However, to obtain a stable and accurate optical path at different lengths, it is necessary to adjust the length of the objective lens connecting tube. When adjusting the length of the existing objective lens connecting tube, it is often difficult to achieve fine adjustment, and it is impossible to meet the experimental and observation requirements with high requirements for optical path accuracy. This leads to unsatisfactory imaging effects in some cases where high-precision imaging is required. In the process of adjusting the length of the objective lens connecting tube, it is easy to introduce additional optical path interference factors, such as tiny particles generated by friction between components, vibration of the adjustment mechanism, etc., thereby affecting the stability and accuracy of the optical path. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem solved by the utility model is to provide an objective lens connecting tube with adjustable length to improve the optical path that can be maintained stable and accurate at different lengths, thereby obtaining clear and high-quality imaging.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is: a length-adjustable objective lens connecting tube, characterized in that: it includes a fixed tube, a protective tube is provided on the outside of the fixed tube, and the protective tube is fixedly connected to the fixed tube; a telescopic tube is provided at the lower end of the fixed tube, and the telescopic tube is cooperatively connected with the fixed tube, and an electric guide rail is provided on one side of the telescopic tube, and the guide rail is fixedly connected to the fixed tube, and a sliding mechanism is provided on the electric guide rail and fixedly connected to the telescopic tube, and the telescopic tube is driven to slide up and down by the sliding mechanism.

[0007] The beneficial effects of this solution are as follows: through the cooperation of the telescopic tube and the fixed tube and the sliding of the sliding mechanism on the guide rail, the overall length of the objective lens connecting tube can be easily adjusted to meet different usage requirements and scenarios, and the versatility and applicability of the objective lens connecting tube can be improved. Through the cooperation of the telescopic tube and the fixed tube and the sliding of the sliding mechanism on the electric guide rail, since the electric guide rail can accurately control the telescopic length, the appropriate optical path can be maintained more stably, so that the imaging quality is not affected by the fluctuation of the length adjustment, and can be adjusted to different lengths quickly and accurately to meet the specific requirements of various complex experiments for the position of the objective lens, avoid the misjudgment that may occur in manual operation and the inaccurate length adjustment caused by improper operation, and ensure that the objective lens can achieve the expected optical effect at different lengths.

[0008] Furthermore, a sealing cylinder is provided at the lower end of the telescopic cylinder, which is cooperatively connected with the protective cylinder. The cooperative connection between the sealing cylinder and the protective cylinder can provide more stable support and restriction for the telescopic cylinder, reduce shaking and deviation during the telescopic process, enhance the stability of the entire structure, better protect the internal components of the telescopic cylinder, prevent dust, impurities, etc. from entering, and reduce the impact of external factors on the internal structure.

[0009] Furthermore, a light shield is provided on the sealing tube, and a fixing buckle is fixed on the light shield, and the fixing buckle is connected to the telescopic tube. The light shield is connected to the telescopic tube through the fixing buckle, which can ensure that the light shield always remains tightly fitted during the extension and retraction of the telescopic tube, effectively blocking stray light from entering, enhancing the light shielding effect, and improving the imaging quality.

[0010] Furthermore, the lens hood is made of chloroprene rubber, which has good resistance to environmental factors such as temperature changes, ultraviolet radiation and humidity, is not easy to age, become brittle or deform, can be used stably under various complex environmental conditions, and can be deformed to a certain extent and restored to its original shape. This enables the lens hood made of chloroprene rubber to better adapt to objective lens connecting tubes of different shapes and sizes, and can play a buffering and protective role when subjected to external forces.

[0011] Furthermore, an arc-shaped limiting groove is provided on the fixed tube, which is connected with the limiting plate provided on the telescopic groove, effectively preventing the telescopic tube from being excessively extended or retracted, and protecting the internal structure from damage caused by excessive stretching or extrusion.

[0012] Furthermore, the guide rail is an electric ball linear guide rail, which can achieve high-precision linear motion control, ensure the position accuracy of the telescopic tube, thereby improving the accuracy of the objective lens connecting tube length adjustment, and at the same time run smoothly, reduce vibration and jitter, help maintain the stability of the optical system, and improve imaging quality.

[0013] Furthermore, the inner surfaces of the fixed tube and the telescopic tube are coated with a nanomaterial coating, which is a nano black silicon coating, which reduces the reflection of light on the inner surface of the tube, helps to reduce the interference of stray light, makes the passing light purer, and enhances the contrast and clarity of the imaging.

[0014] Furthermore, the inner surfaces of the fixed tube and the telescopic tube are provided with irregular tiny concave-convex stripe structures, which can scatter the light incident on the inner surface of the tube, reduce the direct reflection of the light, thereby reducing the impact of diffuse reflection and improving the imaging quality of the optical system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the utility model;

[0017] Figure 3 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0018] The reference numerals in the drawings of the specification include: protective tube 1, eyepiece 2, sealing tube 3, light shield 4, fixing buckle 5, telescopic tube 6, fixing tube 7, limiting groove 8, limiting plate 9, sliding mechanism 10, guide rail 11, concave and convex stripes 12.

[0019] Example 1 is basically as shown in the attached Figure 1-3As shown: a length-adjustable objective lens connecting tube, including a fixed tube 7, a protective tube 1 is provided on the outside of the fixed tube 7, the protective tube 1 is fixedly connected to the fixed tube 7, a limiting groove 8 is provided on the outside of the fixed tube 7, the limiting groove 8 is provided on both sides of the fixed tube 7, and the limiting groove 8 is arranged in an arc-shaped structure, a telescopic tube 6 is provided at the lower end when the limiting groove 8 is vertical, a limiting plate 9 is provided in the telescopic tube 6, which slides with the limiting groove 8, and the limiting plate 9 is connected to the limiting groove 8 in a sliding manner, a sliding mechanism 10 is provided on the outside of the telescopic tube 6, the sliding mechanism 10 is fixedly connected to the telescopic tube 6, and a guide rail 11 is provided at the lower end of the sliding mechanism 10, which is an electric ball linear guide 11, and the electric ball linear slide rail drives the sliding mechanism 10 to slide up and down, thereby controlling the telescopic tube 6 to slide on the fixed tube 7, and then adjusting the length of the connecting tube.

[0020] A sealing cylinder 3 is provided at the end of the telescopic cylinder 6 away from the fixed cylinder, and the sealing cylinder 3 is connected with the protective cylinder 1. A light shield 4 is provided on the sealing cylinder 3, and the light shield 4 is made of chloroprene rubber, and the light shield 4 can be deformed to a certain extent and restored to its original shape. A fixing buckle 5 is provided on the light shield 4, and the fixing buckle 5 is fixedly connected to the light shield 4. The fixing buckle 5 is fixedly connected to the telescopic cylinder 6, so that during the telescopic process of the telescopic cylinder 6, the light shield 4 blocks the light of the surrounding environment, effectively blocks the entry of stray light, enhances the light shielding effect, and improves the imaging quality. In addition, the inner walls of the fixed cylinder 7 and the telescopic cylinder 6 are provided with concave and convex stripes 12, which are arranged in a ring around the inner walls of the fixed cylinder 7 and the telescopic cylinder 6 to reduce diffuse reflection of light. A nano material coating is also coated on the inner wall, and the nano material coating is a nano black silicon coating, which reduces the reflection of light on the inner surface of the cylinder, helps to reduce the interference of stray light, makes the passing light purer, and enhances the contrast and clarity of the imaging.

[0021] In actual use, the operator can input the required length value of the objective lens connecting tube through the control system, and the control system will automatically drive the electric ball linear guide 11 to make the sliding mechanism 10 drive the telescopic tube 6 to slide up and down until it reaches the set length. The arc-shaped limit groove 8 and the limit plate on the telescopic groove can ensure that the telescopic tube 6 moves within a safe range to prevent damage caused by excessive telescopic extension. At this time, the light shield 4 made of chloroprene rubber can effectively block external light and improve the imaging quality. The nano black silicon coating and tiny concave and convex stripes 12 can reduce the reflection and scattering of internal light, further optimizing the imaging effect. In the telescopic process, one end of the light shield 4 is fixed to the telescopic tube 6 by a fixing buckle 5, and the other end is fixed by a sealing tube 3. When in use, the telescopic tube 6 is extended and contracted. Since the light shield 4 is elastic, it will stretch or shrink accordingly, so that the connecting tube will not be disturbed by light or dust during use, thereby improving the imaging effect.

[0022] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is clear to those skilled in the art that various changes, modifications, substitutions, and variations of these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A length-adjustable objective lens connecting tube, characterized in that: It includes a fixed cylinder, a protective cylinder is provided on the outside of the fixed cylinder, and the protective cylinder is fixedly connected to the fixed cylinder; a telescopic cylinder is provided at the lower end of the fixed cylinder, and the telescopic cylinder is cooperatively connected to the fixed cylinder, an electric guide rail is provided on one side of the telescopic cylinder, and the electric guide rail is fixedly connected to the fixed cylinder, a sliding mechanism is provided on the electric guide rail and fixedly connected to the telescopic cylinder, and the telescopic cylinder is driven to slide up and down by the sliding mechanism.

2. The length-adjustable objective lens connecting tube according to claim 1, characterized in that: A sealing cylinder is provided at the lower end of the telescopic cylinder, and the sealing cylinder is cooperatively connected with the protective cylinder.

3. The length-adjustable objective lens connecting tube according to claim 2, characterized in that: The sealing cylinder is provided with a light shield, and the light shield is fixedly provided with a fixing buckle, and the fixing buckle is matched and connected with the telescopic cylinder.

4. The length-adjustable objective lens connecting tube according to claim 3, characterized in that: The light shield is made of neoprene.

5. The length-adjustable objective lens connecting tube according to claim 1, characterized in that: The fixed cylinder is provided with an arc-shaped limiting groove, which is matched and connected with the limiting plate provided on the telescopic cylinder.

6. The length-adjustable objective lens connecting tube according to claim 1, characterized in that: The electric guide rail is an electric ball linear guide rail.

7. The length-adjustable objective lens connecting tube according to claim 1, characterized in that: The inner surfaces of the fixed cylinder and the telescopic cylinder are coated with a special nano material coating, which is a nano black silicon coating.

8. The length-adjustable objective lens connecting tube according to claim 1, characterized in that: The inner surfaces of the fixed cylinder and the telescopic cylinder are provided with irregular tiny concave and convex stripes.

Images