Television image acquisition board adjusting mechanism and adjusting method thereof

Abstract

The invention discloses a television image acquisition board adjusting mechanism and an adjusting method thereof, and solves the problems of center offset, distortion and the like of an acquired image caused by difficulty in accurately correcting offset of an image acquisition board in X-axis and Y-axis directions in an adjusting mode in the prior art. Meanwhile, a system method for adjusting the focusing consistency in the Z-axis direction is lacked, the uniformity of the focusing states of a lens at a long focus end and a short focus end cannot be ensured, and the stability of image acquisition quality is further influenced. In addition, a traditional adjusting process is disordered in steps and free of a standardized process, adjustment omission or repeated adjustment is prone to occurring, the production and assembly cost is increased, and the mass production requirement of high-precision television image acquisition equipment is difficult to meet. Therefore, the invention provides a television image acquisition board adjusting mechanism and an adjusting method thereof.

Description

Technical Field

[0001] This invention relates to the field of television image acquisition equipment technology, specifically to a television image acquisition board adjustment mechanism and its adjustment method. Background Technology

[0002] In television image acquisition systems, the positional accuracy of the image acquisition board (including the image sensor and its associated circuit boards) relative to the optical lens directly affects image quality. Positional deviations can lead to problems such as image blurring, decreased contrast, and color distortion. To achieve optimal image quality, the image acquisition board needs to be able to make precise positional adjustments in multiple degrees of freedom.

[0003] Specifically, traditional adjustment methods struggle to accurately correct image acquisition board offsets along the X and Y axes, leading to issues such as center shift and distortion in the acquired images. Furthermore, the lack of a systematic approach to focus consistency adjustment along the Z-axis prevents consistency in lens focus at both telephoto and focal lengths, thus impacting the stability of image acquisition quality. In addition, traditional adjustment processes are disorganized and lack standardized procedures, easily resulting in omissions or duplicate adjustments, increasing production and assembly costs and failing to meet the mass production requirements of high-precision television image acquisition equipment.

[0004] Therefore, providing a television image acquisition board adjustment mechanism and its adjustment method is a problem that this invention urgently needs to solve. Summary of the Invention

[0005] To address the aforementioned technical problems, the purpose of this invention is to overcome the difficulty of accurately correcting the offset of the image acquisition board in the X and Y axes using existing adjustment methods, which leads to issues such as center shift and distortion in the acquired images. Furthermore, the lack of a systematic method for adjusting focus consistency in the Z-axis direction makes it impossible to guarantee the uniformity of lens focus at both telephoto and focal length ends, thus affecting the stability of image acquisition quality. In addition, traditional adjustment processes are disorganized, lack standardized procedures, and are prone to omissions or repeated adjustments, increasing production and assembly costs and failing to meet the mass production requirements of high-precision television image acquisition equipment. Therefore, this invention provides a television image acquisition board adjustment mechanism and its adjustment method.

[0006] To achieve the above objectives, the present invention provides a method for adjusting a television image acquisition board, comprising the following steps: S1. Install the image acquisition board body onto the image acquisition board mounting assembly, and then install the image acquisition board mounting assembly onto one side of the lens assembly; S2. Connect the image acquisition board to the image testing system, and then take pictures of the target at the telephoto end and the short telephoto end of the lens assembly respectively. Record the pixel position of the target center on the image testing system, and calculate the offset of the X-axis and Y-axis. S3. Then, adjust the position of the image acquisition board body by using the image acquisition board mounting components so that the pixel position of the target center on the image testing system coincides with the X-axis and Y-axis. S4. Place a high-contrast target, focus the lens assembly to the telephoto end, and focus until it is sharpest. The image testing system records the focus scale a1. Then focus to the short focal length end and focus until it is sharpest. The image testing system records the focus scale a2. S5. Determine whether a1 is equal to a2. If yes, proceed to step S7; otherwise, proceed to step S6. S6. Adjust the position of the image acquisition board body on the Z-axis using the image acquisition board mounting components, and return to step S4; S7. Remove the image acquisition board mounting components and the image acquisition board body.

[0007] And a television image acquisition board adjustment mechanism, comprising: a mounting plate on which a lens assembly is disposed, an image acquisition board mounting assembly on one side of the lens assembly, an image acquisition board body disposed on the image acquisition board mounting assembly, and capable of receiving the image generated by the lens assembly; and an image testing system electrically connected to the image acquisition board body.

[0008] Preferably, the lens assembly includes a focal length switching component and a focus adjustment component.

[0009] Preferably, the image acquisition board mounting assembly includes: a first fixing plate and a second fixing plate, wherein a first linear module is disposed on the first fixing plate, and the second fixing plate is disposed on the first fixing plate reciprocally along the X-axis direction via the first linear module; a third fixing plate, wherein a second linear module is disposed on the second fixing plate, and the third fixing plate is disposed on the second fixing plate reciprocally along the Y-axis direction via the second linear module; and a fourth fixing plate, wherein a third linear module is disposed on the third fixing plate, and the fourth fixing plate is embedded within the third fixing plate and is disposed on the third fixing plate reciprocally along the Z-axis direction via the third linear module.

[0010] Preferably, the second fixing plate, the third fixing plate and the fourth fixing plate are respectively provided with a plurality of waist-shaped holes adapted to their corresponding moving directions, and each waist-shaped hole is provided with a first fixing member for fixing.

[0011] Preferably, the second fixing plate, the third fixing plate, and the fourth fixing plate are respectively provided with a second fixing member for fixing themselves to the corresponding first linear module, the second linear module, and the third linear module.

[0012] According to the above technical solution, the beneficial effects of the present invention compared with the prior art are: 1. Precisely corrects X / Y axis offset, resolving image distortion issues. Existing technologies struggle to accurately correct the offset of the image acquisition board along the X and Y axes, leading to center shift and distortion in the acquired images. This invention addresses this issue through a standardized process (S2-S3): first, the target is photographed at both the telephoto and focal length ends of the lens; an image testing system precisely records the target's center pixel position and calculates the offset; then, the first and second linear modules of the image acquisition board mounting assembly are used to adjust the X / Y axis orientation of the acquisition board until the target center coincides with the coordinate axes. This method achieves quantitative correction of X / Y axis offset, completely resolving quality defects such as image center shift and distortion, and significantly improving image center positioning accuracy.

[0013] 2. Implement systematic adjustment of Z-axis focus consistency to ensure image quality stability. Existing technologies lack effective methods for achieving consistent focus along the Z-axis, failing to guarantee uniform focus at both the telephoto and focal length ends of the lens, thus affecting image quality stability. This invention designs a closed-loop adjustment logic (S4-S6): Optimal focus scales at the telephoto (a1) and focal length (a2) ends are recorded using a high-contrast target. Using "a1=a2" as the criterion, the Z-axis position of the acquisition board is repeatedly fine-tuned through a third linear module until the focus consistency requirement is met. This method forms a systematic Z-axis adjustment scheme, ensuring that the lens can present clear images across the entire focal length range, significantly improving the stability and consistency of image acquisition quality.

[0014] 3. Standardize adjustment processes to reduce costs and adapt to mass production requirements. Traditional adjustment processes are often disorganized and lack standardized procedures, leading to omissions or repetitive operations, increasing production and assembly costs, and failing to meet mass production requirements. This invention provides a complete standardized process from installation (S1), X / Y axis adjustment (S2-S3), Z-axis focus calibration (S4-S6), to disassembly (S7). Each step has clearly defined operating objects, test indicators, and judgment criteria, avoiding the randomness and errors of human operation. This standardized process not only reduces adjustment time and repetitive workload, lowering production and assembly costs, but also ensures consistency in adjustment results across different devices, fully adapting to the mass production needs of high-precision television image acquisition equipment.

[0015] 4. The adjustment mechanism has a reasonable structure, supporting precise multi-axis adjustment and fixation. The image acquisition board mounting assembly of this invention adopts a layered design of "four-layer fixing plates + three sets of linear modules," each corresponding to independent adjustment of the X, Y, and Z axes, achieving precise displacement control with multiple degrees of freedom. Simultaneously, each fixing plate is equipped with oblong holes adapted to the direction of movement and first and second fixing components, allowing for quick locking and positioning after adjustment to prevent subsequent displacement deviations. This mechanism features a compact structure, high adjustment precision, and reliable fixation, providing stable hardware support for standardized adjustment methods and further ensuring the accuracy and durability of the adjustment results.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description section; and all parts not covered in the present invention are the same as or can be implemented using the prior art. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional television image acquisition board adjustment mechanism provided in a preferred embodiment of the present invention. Figure 1 ; Figure 2 This is a three-dimensional television image acquisition board adjustment mechanism provided in a preferred embodiment of the present invention. Figure 2 ; Figure 3 This is a partial three-dimensional representation of a television image acquisition board adjustment mechanism provided in a preferred embodiment of the present invention. Figure 1 ; Figure 4 This is a partial three-dimensional explosion of the television image acquisition board adjustment mechanism provided in a preferred embodiment of the present invention. Figure 1 ; Figure 5 This is a partial perspective exploded view of the television image acquisition board adjustment mechanism provided in a preferred embodiment of the present invention. Figure 2 ; Figure 6 This is a flowchart of a television image acquisition board adjustment method provided in a preferred embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Mounting plate; 2. Lens assembly; 21. Focal length switching assembly; 22. Focus adjustment assembly; 3. Image acquisition board mounting assembly; 31. First fixing plate; 311. First linear module; 32. Second fixing plate; 321. Second linear module; 33. Third fixing plate; 331. Third linear module; 34. Fourth fixing plate; 35. Waist-shaped hole; 36. First fixing member; 37. Second fixing member; 4. Image acquisition board body. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] In the description of the embodiments of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance. Additionally, the terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0022] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0023] Reference Figure 6 A method for adjusting a television image acquisition board, comprising the following steps: S1. Install the image acquisition board body 4 onto the image acquisition board mounting assembly 3, and then install the image acquisition board mounting assembly 3 onto one side of the lens assembly 2. S2. Connect the image acquisition board 4 to the image testing system, and then take pictures of the target at the telephoto end and the short telephoto end of the lens assembly 2 respectively. Record the pixel position of the target center on the image testing system, and calculate the offset of the X-axis and Y-axis. S3. Then, adjust the position of the image acquisition board body 4 by using the image acquisition board mounting component 3 so that the pixel position of the target center on the image testing system coincides with the X-axis and Y-axis. S4. Place a high-contrast target, focus lens assembly 2 to the telephoto end, focus to the clearest point, and the image test system records the focus scale a1; focus to the short focal length end, focus to the clearest point, and the image test system records the focus scale a2. S5. Determine whether a1 is equal to a2. If yes, proceed to step S7; otherwise, proceed to step S6. S6. Adjust the position of the image acquisition board body 4 on the Z-axis using the image acquisition board mounting component 3, and return to step S4; S7. Remove the image acquisition board mounting component 3 and the image acquisition board body 4.

[0024] The image testing system of this application is an industrial-grade image processing system that is electrically connected to the image acquisition board body 4, can receive target images transmitted by the acquisition board, and has the functions of target center recognition, pixel position recording, focus scale recording, data calculation and comparative analysis. It is a key component for realizing the "image feedback-precise adjustment" closed loop.

[0025] The hardware modules mainly include: an industrial-grade image analyzer (core processing unit), a data transmission interface (such as USB or Ethernet interface, used to establish an electrical connection with the acquisition board), a display module (used to display target images, pixel positions, focus scales, and other data in real time), and a data storage module (stores the acquired image data and scale information).

[0026] The software modules mainly include: an automatic target center recognition algorithm (which can accurately identify the center position of standard targets such as cross targets and black and white grid targets), an offset calculation module (which calculates the X / Y axis offset based on the preset origin and the actual pixel position), a focus scale comparison module (which determines whether the error between a1 and a2 is within the allowable range), and a data visualization module (which displays the collected data in an intuitive form, making it easy for operators to observe the adjustment effect).

[0027] Reference Figure 1 A television image acquisition board adjustment mechanism includes: a mounting plate 1, on which a lens assembly 2 is disposed, an image acquisition board mounting assembly 3 is disposed on one side of the lens assembly 2, an image acquisition board body 4 is disposed on the image acquisition board mounting assembly 3, and is capable of receiving the image generated by the lens assembly 2; and an image testing system, which is electrically connected to the image acquisition board body 4.

[0028] The image testing system of this application establishes an electrical connection with the image acquisition board body 4 through an industrial-grade USB 3.0 interface.

[0029] Reference Figure 2The lens assembly 2 includes a focal length switching assembly 21 and a focus adjustment assembly 22.

[0030] This application features precise and stable focal length switching, improving data acquisition consistency: the focal length switching structure using an electric stepper motor and gear transmission replaces the traditional manual switching method, avoiding focal length positioning errors caused by manual operation. This ensures that the positions of the telephoto and short focal length ends are consistent in each adjustment process, providing a stable benchmark for S2 offset calculation and S4 focus scale acquisition, reducing the impact of data fluctuations on the adjustment results. At the same time, the focus adjustment component 22 also uses an electric stepper motor and gear transmission adjustment method to ensure image sharpness.

[0031] Reference Figures 3-5 The image acquisition board mounting assembly 3 includes: a first fixing plate 31 and a second fixing plate 32. The first fixing plate 31 is provided with a first linear module 311, and the second fixing plate 32 is mounted on the first fixing plate 31 via the first linear module 311, which can reciprocate along the X-axis direction; a third fixing plate 33, on which the second fixing plate 32 is provided with a second linear module 321, and the third fixing plate 33 is mounted on the second fixing plate 32 via the second linear module 321, which can reciprocate along the Y-axis direction; and a fourth fixing plate 34, on which the third fixing plate 33 is provided with a third linear module 331, and the fourth fixing plate 34 is embedded in the third fixing plate 33 and is mounted on the third fixing plate 33 via the third linear module 331, which can reciprocate along the Z-axis direction.

[0032] This application uses three linear modules to adjust the movement of the image acquisition board body 4 in the X, Y, and Z axes.

[0033] Reference Figure 3 The second fixing plate 32, the third fixing plate 33 and the fourth fixing plate 34 are respectively provided with a number of waist-shaped holes 35 that are adapted to their corresponding moving directions, and each waist-shaped hole 35 is provided with a first fixing member 36 for fixing.

[0034] After adjustment, this application locks each fixing plate with the first fixing member 36 to prevent relative sliding and affecting the imaging accuracy of the four sides of the adjusted image acquisition board body.

[0035] Reference Figure 3 and Figure 4 The second fixing plate 32, the third fixing plate 33 and the fourth fixing plate 34 are respectively provided with second fixing members 37 for fixing themselves to the corresponding first linear module 311, second linear module 321 and third linear module 331.

[0036] S1. Install the image acquisition board body 4 onto the image acquisition board mounting assembly 3, and then install the image acquisition board mounting assembly 3 onto one side of the lens assembly 2. S2. Connect the image acquisition board 4 to the image testing system, and then take pictures of the target at the telephoto end and the short telephoto end of the lens assembly 2 respectively. Record the pixel position of the target center on the image testing system, and calculate the offset of the X-axis and Y-axis. The focal length switching component 21 is used to switch between the telephoto and short focal length ends, and the focus adjustment component 22 is used to improve image sharpness.

[0037] S3. Then, adjust the position of the image acquisition board body 4 by using the image acquisition board mounting component 3 so that the pixel position of the target center on the image testing system coincides with the X-axis and Y-axis. The position of the image acquisition board body 4 is adjusted by the first linear module 311 and the second linear module 321 so that the pixel position of the target center on the image testing system coincides with the X-axis and Y-axis; S4. Place a high-contrast target, focus lens assembly 2 to the telephoto end, focus to the clearest point, and the image test system records the focus scale a1; focus to the short focal length end, focus to the clearest point, and the image test system records the focus scale a2. The focal length switching component 21 is used to switch between the telephoto and short focal length ends, and the focus adjustment component 22 is used to improve image sharpness. Then, the focus scales a1 and a2 of the telephoto and short focal length ends are recorded by the image testing system.

[0038] S5. Determine whether a1 is equal to a2. If yes, proceed to step S7; otherwise, proceed to step S6. S6. Adjust the position of the image acquisition board body 4 on the Z-axis using the image acquisition board mounting component 3, and return to step S4; The position of the image acquisition board body 4 on the Z-axis is adjusted by the third linear module 331 until a1 equals a2.

[0039] S7. Remove the image acquisition board mounting component 3 and the image acquisition board body 4.

[0040] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0041] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0042] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A method for adjusting a television image acquisition board, characterized in that, Includes the following steps: S1. Install the image acquisition board body (4) on the image acquisition board mounting assembly (3), and then install the image acquisition board mounting assembly (3) on one side of the lens assembly (2); S2. Connect the image acquisition board body (4) to the image testing system, and then take pictures of the target at the long focal length end and short focal length end of the lens assembly (2) respectively, record the pixel position of the target center on the image testing system, and calculate the offset of the X-axis and Y-axis. S3. Then, adjust the position of the image acquisition board body (4) by using the image acquisition board mounting component (3) so that the pixel position of the target center on the image testing system coincides with the X-axis and Y-axis. S4. Place a high-contrast target, adjust the lens assembly (2) to the telephoto end, focus to the clearest point, and record the focus scale a1 in the image test system. Focus to the short focal length end, focus until the sharpest point, and the image testing system records the focus scale a2; S5. Determine whether a1 is equal to a2. If yes, proceed to step S7; otherwise, proceed to step S6. S6. Adjust the position of the image acquisition board body (4) on the Z-axis by using the image acquisition board mounting component (3), and return to step S4; S7. Remove the image acquisition board mounting assembly (3) and the image acquisition board body (4).

2. A television image acquisition board adjustment mechanism, characterized in that, include: Mounting plate (1), on which a lens assembly (2) is provided, and on one side of the lens assembly (2) an image acquisition plate mounting assembly (3) is provided, on which an image acquisition plate body (4) is provided, and is capable of receiving the image generated by the lens assembly (2); image testing system, which is electrically connected to the image acquisition plate body (4).

3. The television image acquisition board adjustment mechanism according to claim 2, characterized in that, The lens assembly (2) includes a focal length switching assembly (21) and a focus adjustment assembly (22).

4. The television image acquisition board adjustment mechanism according to claim 2, characterized in that, The image acquisition board mounting assembly (3) includes: a first fixing plate (31) and a second fixing plate (32), wherein a first linear module (311) is provided on the first fixing plate (31), and the second fixing plate (32) is disposed on the first fixing plate (31) via the first linear module (311) in a reciprocating manner along the X-axis direction; a third fixing plate (33), wherein a second linear module (321) is provided on the second fixing plate (32), and the third fixing plate (33) is disposed on the second fixing plate (32) via the second linear module (321) in a reciprocating manner along the Y-axis direction; and a fourth fixing plate (34), wherein a third linear module (331) is provided on the third fixing plate (33), and the fourth fixing plate (34) is embedded in the third fixing plate (33) and is disposed on the third fixing plate (33) via the third linear module (331) in a reciprocating manner along the Z-axis direction.

5. The television image acquisition board adjustment mechanism according to claim 4, characterized in that, The second fixing plate (32), the third fixing plate (33) and the fourth fixing plate (34) are respectively provided with a number of waist-shaped holes (35) that are adapted to their corresponding moving directions, and each waist-shaped hole (35) is provided with a first fixing member (36) for fixing.

6. The television image acquisition board adjustment mechanism according to claim 4, characterized in that, The second fixing plate (32), the third fixing plate (33) and the fourth fixing plate (34) are respectively provided with second fixing members (37) for fixing themselves to the corresponding first linear module (311), second linear module (321) and third linear module (331).

Images