Three-degree-of-freedom optical mechanical device
By designing a three-degree of freedom optical mechanical device, using a fixed base, a fixed height adjustment rod and an angle adjustment rod, the problem of complex structure and poor interchangeability of optical fine adjustment mechanisms in the prior art is solved, and flexible adjustment of height and angle is achieved , meet the calibration needs of different cameras, improve work efficiency and reduce costs.
Patent Information
- Application Number
- CN202323560824.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The existing optical fine-tuning mechanical devices have complex structures and poor interchangeability, which cannot meet the correction needs of different cameras, and only two degrees of freedom can be fine-tuned.
A three-degree of freedom optical mechanical device is designed, including a fixed base, a fixed height adjustment rod and an angle adjustment rod. By rotating the height adjustment rod and replacing the height adjustment rod and an angle adjustment rod, fine adjustment of height and angle adjustment rod is achieved.
It realizes flexible adjustment of different heights and angles, meets the correction needs of different cameras, improves work efficiency, saves costs, and reduces operational complexity.
Smart Images
Figure CN222503339U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to optical lens calibration, to optical axis calibration after camera installation and to angle and height measurement after camera installation, and in particular to a three-degree-of-freedom optical mechanical device. Background Art
[0002] The optical fine-tuning mechanism is mainly used for optical axis correction, which requires displacement and angle adjustment. Because the camera's mounting surface usually has certain deviations, it is necessary to adjust the camera and the object to be tested to be relatively vertical and parallel by debugging the hardware. The current optical fine-tuning mechanism has a complex structure and poor interchangeability. A single device cannot meet the correction needs of different cameras. Utility Model Content
[0003] The purpose of the utility model is to solve the problems existing in the prior art and provide a three-degree-of-freedom optical mechanical device. It is no longer necessary to add new equipment to meet the calibration requirements of different cameras. At the same time, the structure is simpler than before. You only need to turn different angle adjustment rods to adjust the angle. If the height cannot meet the requirements during the calibration process, you only need to replace the angle adjustment rod and the fixed height adjustment rod to meet the calibration requirements. At the same time, the device can also achieve fine-tuning of the height through the fixed height adjustment rod in the middle. The technical solution of the utility model is as follows:
[0004] A three-degree-of-freedom optical mechanical device includes a fixed base, a fixed height adjustment rod is provided above the fixed base, the fixed height adjustment rod is located at the center of the fixed base, one end of the fixed height adjustment rod is connected to the fixed base and the other end is connected to a camera mounting base, and the camera mounting base is located above the fixed base. The camera mounting base can provide different heights and angles for calibrating cameras or other equipment that requires its function according to task requirements. The fixed height adjustment rod has the function of fixing and adjusting the height of the camera mounting base. When fine-tuning the height is required, the fixed height adjustment rod is rotated, and the fixed height adjustment rod can be replaced when the height does not meet the requirements.
[0005] Preferably, the fixed base is rectangular, and the first angle adjustment rod, the second angle adjustment rod and the tension spring are sequentially distributed in the circumferential direction of the fixed base, the fixed height adjustment rod is located at the center of the rectangle, the first angle adjustment rod and the fixed height adjustment rod are in the same straight line, and the tension spring and the first angle adjustment rod are in the same straight line. The left angle of the camera mounting base plate is adjusted by rotating the second angle adjustment rod. The right angle of the camera mounting base plate is adjusted by rotating the first angle adjustment rod.
[0006] Preferably, the second angle adjustment rod and the fixed height adjustment rod are on another straight line, and the second angle adjustment rod, the first angle adjustment rod and the fixed height adjustment rod are distributed in a triangular shape. The triangular distribution is more stable and improves the overall stability of the device.
[0007] Preferably, the second angle adjustment rod is arranged in the middle of a rectangular side of the fixed base, the first angle adjustment rod is arranged in the middle of an adjacent side of the second angle adjustment rod, a tension spring is arranged in the middle of another adjacent side of the second angle adjustment rod, and a tension spring is also arranged in the middle of the opposite side of the second angle adjustment rod. The tension spring can be used to balance the unstable force during the angle adjustment process through tension to achieve position compensation.
[0008] Preferably, the fixed height adjustment rod is provided with a rod fixing seat at one end close to the fixed base, and the fixed height adjustment rod is provided with a free-degree-of-freedom rotation joint at one end close to the camera mounting base plate.
[0009] Preferably, the first angle adjustment rod is provided with a rotation joint at one end close to the fixed base, and the first angle adjustment rod is provided with a freedom rotation joint at one end close to the camera mounting base plate.
[0010] Preferably, the second angle adjustment rod is provided with a free-degree rotation joint at one end close to the fixed base, and the second angle adjustment rod is also provided with a free-degree rotation joint at one end close to the camera mounting base plate.
[0011] Preferably, the fixed base is a square, which can be applied to different working environments, is easy to process, and saves costs.
[0012] The beneficial effect of the utility model is that it can realize angle adjustment at different heights without replacing new devices, and the installation requirements of different cameras are greatly improved. At the same time, it also improves work efficiency, saves costs, is convenient and easy to use, and reduces the complexity of personnel operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model.
[0014] Figure 2 It is a side view schematic diagram of the utility model.
[0015] In the figure: 1. fixed base, 2. fixed height adjustment rod, 3. camera mounting base, 4. first angle adjustment rod, 5. second angle adjustment rod, 6. tension spring, 7. rod fixing seat, 8. degree of freedom rotation joint, 9. rotation joint, 10. tension spring fixing seat. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] Embodiment 1, from Figure 1 and Figure 2 It can be seen that the utility model provides a three-degree-of-freedom optical mechanical device, which mainly includes three parts, a camera mounting base plate 3 located at the top of the device for mounting a camera, a fixed base 1 located at the bottom of the device for connecting and fixing the camera mounting base plate 3, and a connecting part located between the camera mounting base plate 3 and the fixed base 1. In this embodiment of the utility model, the connecting part mainly includes three components. The first component is a tension spring 6, and two tension springs 6 are provided in this embodiment of the utility model. The second component is a fixed height adjustment rod 2, and one fixed height adjustment rod 2 is provided in this embodiment of the utility model. The third component is an angle adjustment rod, and two different types of angle adjustment rods are provided in this embodiment of the utility model, namely a first angle adjustment rod 4 and a second angle adjustment rod 5. In this embodiment of the utility model, one first angle adjustment rod 4 and one second angle adjustment rod 5 are provided. In addition to the above three parts, there is also a connecting part for fixing the tension spring 6, the first angle adjustment rod 4, the second angle adjustment rod 5, and the fixed height adjustment rod 2 between the fixed base 1 and the camera mounting base plate 3. There are mainly four types of connecting parts. One is that the tension spring fixing seat 10 is set at both ends of the tension spring 6. In this embodiment of the utility model, the hook of the tension spring 6 is hooked on the tension spring fixing seat 10. The other is that the degree of freedom rotation joint 8 is a joint that can adjust the degree of freedom rotation as the name implies. In this embodiment of the utility model, the degree of freedom rotation joint 8 can be specifically adjusted by rotating the second angle adjustment rod 5 to adjust the left angle of the camera mounting base plate 3. The third is the rotation joint 9. In this embodiment of the utility model, the rotation joint 9 can be adjusted by rotating the first angle adjustment rod 4 to adjust the right angle of the camera mounting base plate 3. The fourth is the rod fixing seat 7. In this embodiment of the utility model, one end of the height adjustment rod 2 is connected to the rod fixing seat 7 and the other end is connected to the degree of freedom rotation joint 8, so as to adjust the total height of the device described in the utility model, and the total height of the camera mounting base plate 3 can be fine-tuned by twisting the thread of the fixed height adjustment rod 2.
[0018] In addition, by Figure 1 and Figure 2It can be seen that the degree of freedom rotation joint 8 and the rotation joint 9 are not of the same type, and their functions are both used to adjust the angle and connect. Specifically, in this embodiment of the utility model, the rod fixing seat 7 is installed on the fixed base 1, and one end of the fixed height adjustment rod 2 is connected to the rod fixing seat and the other end is connected to the degree of freedom rotation joint 8, which means that the degree of freedom rotation joint 8 corresponding to the fixed height adjustment rod 2 is installed below the camera mounting base 3. Similarly, it can be seen that the second angle adjustment rod 5 is provided with a degree of freedom rotation joint 8 at both ends, so the degree of freedom rotation joint 8 corresponding to the second angle adjustment rod 5 is installed on the fixed base 1 and the other is installed below the camera mounting base 3. Similarly, it can be seen that the tension spring 6 is provided with a tension spring fixing seat 10 at both ends, so the tension spring fixing seat 10 corresponding to the tension spring 6 is installed on the fixed base 1 and the other is installed below the camera mounting base 3. Similarly, it can be known that a rotating joint 9 is provided at one end of the first angle adjustment rod 4 and a freedom rotating joint 8 is provided at the other end. Therefore, the rotating joint 9 corresponding to the first angle adjustment rod 4 is installed on the fixed base 1 and the freedom rotating joint 8 corresponding to the first angle adjustment rod 4 is installed under the camera mounting base plate 3.
[0019] Depend on Figure 1 and Figure 2It can be seen that the area of the camera mounting base plate 3 is the same as that of the fixed base 1, and the two overlap from a bird's-eye view. That is to say, the camera mounting base plate 3 will block the fixed base 1 when viewed from above. From a functional perspective, the camera mounting base plate 3 can provide different heights and angles for calibrating cameras or other equipment that requires its functions according to task requirements. The fixed height adjustment rod 2 has the function of fixing and adjusting the height of the camera mounting base plate 3. When the height needs to be fine-tuned, the fixed height adjustment rod 2 is rotated. When the height does not meet the requirements, the fixed height adjustment rod 2 can be replaced. The degree of freedom rotation joint 8 can adjust the left angle of the camera mounting base plate 3 by rotating the second angle adjustment rod 5. In addition, the rotation joint 9 can adjust the right angle of the camera mounting base plate 3 by rotating the first angle adjustment rod 4. In addition, the tension spring 6 can be used to balance the unstable force in the angle adjustment process through tension to achieve position compensation. The utility model relates to optical lens calibration, specifically to optical axis calibration after camera installation and angle and height measurement after camera installation. The optical fine-tuning mechanical device is mainly used for optical axis correction, which requires displacement and angle adjustment. Because the camera's mounting surface will usually have certain deviations, it is necessary to adjust the camera and the detection object to be relatively vertical and parallel by debugging the hardware. The current optical fine-tuning mechanical device has a relatively complex structure and poor interchangeability. A single device cannot meet the correction requirements of different cameras. Therefore, this device supplements the shortcomings of the previous device and saves costs. Specifically, the utility model can adjust the angle by simply twisting different angle adjustment rods. If the height cannot meet the requirements during the correction process, it only needs to replace the angle adjustment rod and the fixed height adjustment rod 2 to meet the correction requirements. At the same time, the device can also achieve fine-tuning of the height through the fixed height adjustment rod 2 in the middle, while the existing technology can only achieve fine-tuning of two degrees of freedom in the same device.
[0020] In this embodiment of the utility model, a three-degree-of-freedom optical mechanical device is provided, including a camera mounting base plate 3, a four-degree-of-freedom rotating joint 8, a rotating joint 9, a rod fixing seat 7, two tension springs 6, a fixed height adjustment rod 2, a first angle adjustment rod 4, a second angle adjustment rod 5, a fixed base 1 and four tension spring fixing seats 10. The fixed height adjustment rod 2 is connected with the degree-of-freedom rotating joint 8 and the rod fixing seat 7 to adjust the total height of the device, and the total height of the camera mounting base plate 3 is fine-tuned by twisting the thread of the fixed height adjustment rod 2. The left angle of the camera mounting base plate 3 is adjusted by twisting the thread of the second angle adjustment rod 5, and the right angle of the camera mounting base plate 3 is adjusted by twisting the thread of the first angle adjustment rod 4. Therefore, it can be seen that the three degrees of freedom referred to in the utility model refer to the height, the left angle and the right angle.
[0021] Depend on Figure 1 and Figure 2It can be seen that in this embodiment of the present invention, the camera mounting base plate 3 and the fixed base are special rectangular shapes, that is, squares. The fixed height adjustment rod 2 is located at the center of the square, and the corresponding first angle adjustment rod 4 is located on the central axis of one side of the square. Figure 1 Taking the perspective as an example, the first angle adjustment rod 4 is located on the front side of the square, and a tension spring 6 is provided on the opposite side, which is the rear side of the square. The tension spring 6 is also on the central axis of the square side, that is, the first angle adjustment rod 4 and the fixed height adjustment rod 2 and the tension spring 6 are on the same straight line. Similarly, the second angle adjustment rod 5 is located on the central axis of a side on the left side of the square. This side is also the adjacent side of the square side where the first angle adjustment rod 4 is located. Another tension spring 6 is provided on the opposite side of the side with the second angle adjustment rod 5. The tension spring 6 is also on the central axis of the side. That is to say, this tension spring 6 and the second angle adjustment rod 5 and the fixed height adjustment rod 2 are on the same straight line. More specifically, from Figure 1 Combination Figure 2 It can be seen that the two tension springs 6 and the fixed height adjustment rod 2 are distributed in a triangle, which is an isosceles right triangle. Similarly, since the fixed base 1 is a square, the fixed height adjustment rod 2 and the first angle adjustment rod 4 and the second angle adjustment rod 5 are also distributed in a triangle, which is also an isosceles right triangle.
[0022] from Figure 2 It can be seen that a plurality of through holes are reserved on the camera mounting base plate 3. Specifically, there are 5 groups of through holes corresponding to the tension spring 6 below, the first angle adjustment rod 4, the second angle adjustment rod 5, and the fixed height adjustment rod 2. Each group of through holes is composed of four through hole arrays. Figure 2 From the perspective of the camera, each set of through holes is on the central axis of the three sides of the camera mounting base. Figure 2 From the perspective of , the left through hole corresponds to a tension spring 6, the right through hole corresponds to the second angle adjustment rod 5, the front through hole corresponds to another tension spring 6, the rear through hole corresponds to the first angle adjustment rod 4, and the middle through hole corresponds to the fixed height adjustment rod 2.
[0023] In this embodiment of the utility model, the rod fixing seat 7 is square, and a cylindrical protrusion is provided on it, and the central opening of the cylindrical protrusion is adapted to the diameter of the fixed height adjustment rod 2. In this embodiment of the utility model, the tension spring fixing seat 10 is also square, and its area is smaller than that of the rod fixing seat 7. A circular ring is provided above the tension spring fixing seat 10, and the hook of the tension spring 6 is hooked on the circular ring.
[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the present utility model.
Claims
1. A three-degree-of-freedom optical mechanical device, characterized in that: It includes a fixed base, a fixed height adjustment rod is provided above the fixed base, the fixed height adjustment rod is located at the center of the fixed base, one end of the fixed height adjustment rod is connected to the fixed base and the other end is connected to the camera mounting base, and the camera mounting base is located above the fixed base; The connection part between the camera mounting base plate and the fixed base is provided with two different types of angle adjustment rods, namely a first angle adjustment rod and a second angle adjustment rod.
2. A three-degree-of-freedom optical mechanical device according to claim 1, characterized in that: The fixed base is rectangular, and a first angle adjustment rod, a second angle adjustment rod and a tension spring are distributed in sequence in the circumferential direction of the fixed base. The fixed height adjustment rod is located at the center of the rectangle, the first angle adjustment rod and the fixed height adjustment rod are on the same straight line, and the tension spring and the first angle adjustment rod are on the same straight line.
3. A three-degree-of-freedom optical mechanical device according to claim 2, characterized in that: The second angle adjustment rod and the fixed height adjustment rod are on another straight line, and the second angle adjustment rod, the first angle adjustment rod and the fixed height adjustment rod are distributed in a triangle.
4. The three-degree-of-freedom optical mechanical device according to claim 2, characterized in that: The second angle adjustment rod is arranged in the middle of a rectangular side of the fixed base, the first angle adjustment rod is arranged in the middle of the adjacent side of the second angle adjustment rod, a tension spring is arranged in the middle of another adjacent side of the second angle adjustment rod, and a tension spring is also arranged in the middle of the opposite side of the second angle adjustment rod.
5. The three-degree-of-freedom optical mechanical device according to claim 2, characterized in that: The fixed height adjustment rod is provided with a rod fixing seat at one end close to the fixed base, and the fixed height adjustment rod is provided with a free-degree rotation joint at one end close to the camera mounting base plate.
6. A three-degree-of-freedom optical mechanical device according to claim 2 or 4, characterized in that: The first angle adjustment rod is provided with a rotation joint at one end close to the fixed base, and the first angle adjustment rod is provided with a freedom rotation joint at one end close to the camera mounting base plate.
7. A three-degree-of-freedom optical mechanical device according to claim 2 or 4, characterized in that: The second angle adjustment rod is provided with a free-degree rotation joint at one end close to the fixed base, and the second angle adjustment rod is also provided with a free-degree rotation joint at one end close to the camera mounting base plate.
8. A three-degree-of-freedom optical mechanical device according to claim 1 or 2, characterized in that: The fixed base is square.