Camera sensor inclination angle adjusting device based on multi-motor thread transmission

Abstract

The utility model relates to a camera sensor inclination angle adjusting device based on multi-motor thread transmission. The device is composed of a component A and a component B, three driving motors are installed on the component B, each motor drives a threaded connecting shaft piece with a male thread to be matched with a female threaded hole in the component A, relative displacement between the component A and the component B is adjusted by rotating the threaded connecting shaft pieces, and therefore the inclination angle of a camera sensor connected to the device is accurately adjusted. A spring pre-tightening mechanism is adopted in the device, and return difference and shaking in thread transmission are eliminated. The device can achieve high-precision adjustment through electric control, can also be remotely controlled, is more suitable for unattended application occasions such as observatory, and overcomes the defects of an existing manual adjustment mode.

Description

Technical Field

[0001] This utility model belongs to the field of astronomical photography and precision imaging technology, specifically relating to a camera sensor tilt adjustment device based on multi-motor threaded transmission. Background Technology

[0002] In astrophotography and high-precision imaging, the tilt angle of a camera's CMOS / CCD image sensor is crucial for image quality. Due to manufacturing errors, equipment assembly errors, or structural deformation of the imaging system, the sensor plane may have a slight tilt angle relative to the optical axis. This tilt angle results in the center of the image being in sharp focus, while the surrounding areas cannot achieve ideal focus, thus affecting image quality. In astrophotography, this problem usually manifests as distortion of stars at the edges of the image, affecting the shooting effect. Currently, the tilt angle adjustment device for astronomical camera sensors on the market relies on manual adjustment, with a common design being a "three-push, three-pull" structure, i.e., three sets of push screws and three sets of pull screws. However, this manual adjustment method has the following shortcomings: First, the adjustment accuracy is low, and the repeatability is poor. The adjustment stroke can only be roughly estimated by the screw pitch and rotation angle, which is difficult to meet high-precision requirements. Second, the operation is cumbersome and inconvenient, especially outdoors, in low light, or in extreme environments, where the adjustment process is quite difficult. Third, it cannot be remotely controlled. For unattended observatories or remote observation stations, the manual adjustment method cannot meet the needs of automated adjustment. Therefore, it is necessary to develop an electric, high-precision, and remotely controllable camera sensor tilt adjustment device to overcome the shortcomings of existing technologies. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a camera sensor tilt adjustment device based on multi-motor threaded transmission.

[0004] This utility model is achieved through the following technical solution.

[0005] This invention mainly consists of component A and component B. Component B is equipped with three drive motors, which are evenly spaced (120°) along the same circumference. Corresponding female threaded holes of the appropriate size are placed at corresponding positions on component A. The three drive motors on component B drive three threaded couplings with male threads to screw into the threaded holes on component A. The drive motors rotate the threaded couplings, thereby creating relative displacement between component A and component B. A pre-tightening mechanism is provided between component A and component B, including multiple springs and screws. The screws pass through the springs and are fixed in the threaded holes of component B to apply pre-tightening force to component A, eliminating backlash and mechanical vibration during threaded transmission. The three drive motors can be controlled independently. Based on the principle that three points determine a plane, the relative displacement and tilt angle between component A and component B can be changed by controlling the drive motors separately, thereby achieving precise adjustment of the angle between the plane where the camera sensor is located and the optical axis of the optical system. During installation and use, component A is connected to the telescope side via threads, and component B is connected to the camera side via threads. Part A and Part B can interchange roles.

[0006] The beneficial effects achieved by this invention are: it realizes electrically adjustable camera sensor tilt angle, while also featuring high positioning accuracy and good repeatability. Because it is electrically controlled, it enables contactless remote adjustment of the camera sensor tilt angle via connection to a computer. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the entire assembly of this utility model.

[0008] Figure 2 This is a disassembly diagram of the present invention (view 1).

[0009] Figure 3 This is a disassembly diagram of the present invention (view 2).

[0010] Figure 4 This is a 3D schematic diagram of component A.

[0011] Figure 5 This is a 3D schematic diagram of component B.

[0012] Explanation of reference numerals in the attached figures

[0013] 1. Component A

[0014] 2.B Component

[0015] 3. Drive motor

[0016] 4. Threaded couplings

[0017] 5. Screws used for compressing springs

[0018] 6. Spring

[0019] 101.A The thread on the part into which the threaded coupling is screwed.

[0020] The thread on part 201.B allows the screw used for the compression spring to be screwed in.

[0021] The mounting holes for the drive motor on component 202.B Detailed Implementation

[0022] As shown in Figures 1 to 5, this utility model mainly includes component A (1) and component B (2). As shown in Figure 2, three drive motors (3) are evenly distributed on component B (2), and the three motors are arranged at equal intervals (120°) along the same diameter circumference, respectively driving the corresponding threaded coupling (4). As shown in Figure 3, three female threaded holes (101) are provided on component A at corresponding positions, and their size matches the threaded coupling. During assembly, the three drive motors drive the threaded coupling to screw into these female threaded holes, completing the connection between component A and component B. In order to improve the stability of the system, a spring preload mechanism is provided. During assembly, the spring (6) is sleeved on the screw (5) and screwed into the threaded hole (201) on component B. The spring applies a preload force to component A, pressing it against component B to eliminate backlash and mechanical shaking during the threaded transmission process, ensuring the stability and accuracy of the adjustment. By controlling the three drive motors to drive the threaded coupling to rotate, a relative displacement is generated between component A and component B. Based on the principle that three points determine a plane, precise adjustment of the relative tilt angle between the plane containing component A and the plane containing component B can be achieved, thereby enabling precise adjustment of the angle between the plane containing the camera sensor and the optical axis of the optical system. During installation and use, component A is fixed to one side of the telescope using threads or similar means. Component B is connected to the camera side using threads or similar means. Components A and B can be interchanged. This camera sensor tilt adjustment device based on multi-motor threaded drive is thus realized.

Claims

1. A camera sensor tilt adjustment device based on multi-motor threaded transmission, characterized in that: It consists of component A (1) and component B (2), one of which is used to connect to one side of the telescope and the other is used to connect to one side of the camera; multiple drive motors (3) are installed on component B to drive threaded couplings (4) to be screwed into the corresponding female threaded holes (101) on component A, and the relative displacement and tilt angle between component A and component B are changed by controlling the drive motors respectively.

2. The camera sensor tilt adjustment device based on multi-motor threaded transmission as described in claim 1, characterized in that: A pre-tightening mechanism is provided, including multiple springs (6) and screws (5). The screws pass through the springs and are fixed in the threaded hole (201) of component B to apply a pre-tightening force to component A and eliminate backlash and mechanical shaking during the threaded transmission process.

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