High-precision continuous zooming video microscope lens
Through the design of nylon O-ring and pin spiral holes, the problem of low repeatability accuracy in the center of the zoom lens is solved, and efficient and stable zoom process and image accuracy are achieved to ensure the consistency of measurements.
Patent Information
- Application Number
- CN202422523612.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-18
AI Technical Summary
The repetition accuracy of existing zoom lenses at the same multiple is not high, resulting in inaccurate position and size of the observation image, affecting the consistency and accuracy of the measurement results.
The nylon O-ring is used to compensate for the fitting gap between the lens mount and the guide cylinder, and the stable movement of the lens mount is achieved through the design of pins and spiral holes, reducing friction, and ensuring the efficiency and accuracy of the magnification process.
It achieves high center repeatability accuracy of the zoom lens at the same multiple, accurate image position and size, avoid measurement errors, and ensure consistency of observation and measurement.
Smart Images
Figure CN223272731U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of microscopes, in particular to a high-precision continuous zoom video microscope head. Background Art
[0002] With the development of science and technology, in order to meet the needs of scientific research, product quality control, and comparability of experimental data, when observing the measured object using a continuous zoom microscope, the zoom lens must improve the center repeatability accuracy at the same magnification to ensure consistency and accuracy of observation and measurement. If the zoom lens has low center repeatability at the same magnification, the displayed image position and size will be inaccurate, resulting in inconsistent measurement results and measurement errors, which will directly affect the analysis and conclusions of the sample. Therefore, a continuous zoom video microscope lens with high center repeatability is needed for observing the measured object. Utility Model Content
[0003] The utility model aims to provide a continuously zooming video microscope head with higher center repetition accuracy.
[0004] In order to solve the above problems, the technical solution adopted by the present invention is: this high-precision continuous zoom video microscope head includes a zoom barrel and a guide barrel inserted in the zoom barrel, the front end of the zoom barrel is provided with a front fixed lens group, and the rear end of the guide barrel is provided with a rear fixed lens group; two lens mounting seats are provided in the guide barrel between the front fixed lens group and the rear fixed lens group, a V-shaped groove is provided on the outer ring wall of the lens mounting seat, a nylon O-ring is provided between the V-shaped groove and the inner wall of the guide barrel, a lens is installed in the lens mounting seat, and a pin mounting hole is provided on the outer wall of the lens mounting seat; two spiral holes corresponding to the two lens mounting seats are provided on the barrel wall of the zoom barrel, a vertical strip hole is provided on the barrel wall of the guide barrel, a pin is provided in the spiral hole, and the tail of the pin passes through the strip hole and is connected with the pin mounting hole.
[0005] In the above technical solution, a more specific technical solution may also be: a notch is provided on the nylon O-ring.
[0006] Furthermore, each lens mounting seat has at least two V-shaped grooves on the outer ring wall.
[0007] Furthermore, the rear end of the guide cylinder is connected to the CMOS camera through a connecting cylinder.
[0008] Furthermore, the axial center lines of the zoom barrel, the guide barrel, the front fixed lens group, the lens, and the rear fixed lens group coincide with each other.
[0009] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:
[0010] When the present invention is in use, one end provided with the front fixed lens group is aligned with the object surface for observation. After the object surface is imaged by the front fixed lens group, the first lens, the second lens and the rear fixed lens group, an image plane is formed in the CMOS camera. The front fixed lens group, the first lens, the second lens and the rear fixed lens group are optical elements constituting the continuous zoom microscope lens of the present invention. During the zoom operation, the zoom barrel is rotated to allow the first pin and the second pin to move along the first spiral hole and the second spiral hole respectively. Rotating the zoom barrel will generate an up and down thrust to cause the first pin and the second pin to move up and down within the height range of the strip hole, thereby driving the first lens mount and the second lens mount to move up and down in the guide barrel, and then changing the distance between the front fixed lens group, the first lens, the second lens and the rear fixed lens group to achieve the zoom effect; the nylon O-ring compensates for the fitting gap between the outer wall of the first lens mount and the second lens mount and the inner wall of the guide barrel, and reduces the contact area between the outer wall of the first lens mount and the second lens mount and the inner wall of the guide barrel to reduce friction, so that the first pin and the second pin can be easy, convenient, efficient, stable and accurate in the process of driving the first lens mount and the second lens mount to move for zooming, so that the zoom lens of the utility model has high center repeatability when zooming to the same magnification, and the displayed image position and size are accurate, avoiding measurement errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural diagram of the utility model;
[0012] Figure 2 yes Figure 1 A magnified view of point A in the figure;
[0013] Figure 3 It is a schematic diagram of the structure of a nylon O-ring;
[0014] Figure 4 This is a schematic diagram of the assembly structure of the zoom cylinder, guide cylinder and pin;
[0015] Figure 5 It is a structural diagram of the guide cylinder. DETAILED DESCRIPTION
[0016] In order to make the above-mentioned purposes, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0017] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0019] like Figures 1 to 5The high-precision continuous zoom video microscope head shown in the figure comprises a zoom barrel 1 and a guide barrel 2 inserted in the zoom barrel 1, the front end of the zoom barrel 1 is provided with a front fixed lens group 3, and the rear end of the guide barrel 2 is provided with a rear fixed lens group 4; a first lens mounting seat 5 and a second lens mounting seat 6 are provided between the front fixed lens group 3 and the rear fixed lens group 4 in the guide barrel, and the outer ring walls of the first lens mounting seat 5 and the second lens mounting seat 6 are both provided with V-shaped grooves, and there are at least two V-shaped grooves on the outer ring wall of each lens mounting seat, and a nylon O-ring 11 is provided between each V-shaped groove and the inner wall of the guide barrel 2, and the nylon O-ring 11 is provided with a notch. The first lens 7 and the second lens 8 with different imaging structure parameters are respectively installed in the lens mounting seat 5 and the second lens mounting seat 6, and pin mounting holes are provided on the outer walls of the two lens mounting seats; the wall of the zoom barrel 1 is provided with a first spiral hole 1-1 and a second spiral hole 1-2 corresponding to the first lens mounting seat 5 and the second lens mounting seat 6 respectively, and a vertical strip hole 2-1 is provided on the wall of the guide barrel 2, and the first pin 9 and the second pin 10 are respectively provided in the first spiral hole 1-1 and the second spiral hole 1-2, and the tails of the first pin 9 and the second pin 10 pass through the strip hole 2-1 and are connected to the two pin mounting holes respectively.
[0020] The rear end of the guide cylinder 2 is connected to the CMOS camera 13 through the connecting cylinder 12 .
[0021] The axial center lines of the zoom tube 1, the guide tube 2, the front fixed lens group 3, the first lens 7, the second lens 8 and the rear fixed lens group 4 coincide with each other.
[0022] There is a small gap between the outer walls of the first lens mounting seat 5 and the second lens mounting seat 6 and the inner wall of the guide cylinder 2. The number of lenses in the first lens mounting seat 5 and the second lens mounting seat 6 can be changed according to the requirements of the optical system.
[0023] In the present invention, the direction where the object plane 14 is located is regarded as the front, and the direction where the image plane 15 is located is regarded as the back.
[0024] When the present invention is in use, one end of the front fixed lens group 3 is aligned with the object plane 14 for observation. After the object plane 14 is imaged by the front fixed lens group 3, the first lens 7, the second lens 8 and the rear fixed lens group 4, an image plane 15 is formed in the CMOS camera 13. The front fixed lens group 3, the first lens 7, the second lens 8 and the rear fixed lens group 4 are optical elements that constitute the continuous zoom microscope head of the present invention. During the zoom operation, the zoom barrel 1 is rotated to allow the first pin 9 and the second pin 10 to move along the first spiral hole 1-1 and the second spiral hole 1-2 respectively. Rotating the zoom barrel 1 will generate an up-and-down thrust to move the first pin 9 and the second pin 10 up and down within the height range of the strip hole 2-1, thereby driving the first lens mount 5 and the second lens mount 6 to move up and down in the guide barrel 2, thereby changing the distance between the front fixed lens group 3, the first lens 7, the second lens 8 and the rear fixed lens group 4 to achieve the zoom effect; the nylon O-ring 11 compensates for the first lens mount The fitting clearance between the outer walls of the first lens mount 5 and the second lens mount 6 and the inner wall of the guide cylinder 2 is reduced, and the contact area between the outer walls of the first lens mount 5 and the second lens mount 6 and the inner wall of the guide cylinder 2 is reduced, thereby reducing the friction, so that the first pin 9 and the second pin 10 can easily, conveniently, efficiently, stably and accurately drive the first lens mount 5 and the second lens mount 6 to move during the zooming process, so that the zoom lens of the utility model has a high center repeatability when the zoom is changed to the same magnification, and the displayed image position and size are accurate, avoiding measurement errors.
[0025] A notch is provided on the nylon O-ring 11 to facilitate its placement into the V-groove.
Claims
1. A high-precision continuously zooming video microscope lens, characterized by: It includes a zoom barrel and a guide barrel inserted in the zoom barrel, the front end of the zoom barrel is provided with a front fixed lens group, and the rear end of the guide barrel is provided with a rear fixed lens group; two lens mounting seats are provided in the guide barrel between the front fixed lens group and the rear fixed lens group, a V-shaped groove is provided on the outer ring wall of the lens mounting seat, a nylon O-ring is provided between the V-shaped groove and the inner wall of the guide barrel, a lens is installed in the lens mounting seat, and a pin mounting hole is provided on the outer wall of the lens mounting seat; two spiral holes corresponding to the two lens mounting seats are provided on the barrel wall of the zoom barrel, a vertical strip hole is provided on the barrel wall of the guide barrel, a pin is provided in the spiral hole, and the tail of the pin passes through the strip hole and is connected with the pin mounting hole.
2. The high-precision continuous zoom video microscope lens according to claim 1, characterized in that: A notch is provided on the nylon O-ring.
3. The high-precision continuous zoom video microscope lens according to claim 1 or 2, characterized in that: There are at least two V-shaped grooves on the outer ring wall of each lens mounting seat.
4. The high-precision continuous zoom video microscope lens according to claim 3, characterized in that: The rear end of the guide cylinder is connected to the CMOS camera through a connecting cylinder.
5. The high-precision continuous zoom video microscope lens according to claim 4, characterized in that: The axial center lines of the zoom barrel, the guide barrel, the front fixed lens group, the lens, and the rear fixed lens group coincide with each other.