Universal lens focusing feedback structure

Abstract

The utility model provides a general lens focusing feedback structure, which comprises a camera, a lens focusing assembly and an infrared sensor, the shooting end of the camera is connected with the lens focusing assembly, and the lens focusing assembly is provided with a closed loop stepping motor, a first focusing gear, a second focusing gear, a lens part and a lens fixing part. The lens fixing part is connected to the outer diameter of the lens part in a sleeved mode, the first focusing gear is arranged at the output end of the closed-loop stepping motor, and the second focusing gear is fixed to a focusing part of the lens part and meshed with the first focusing gear. The side, close to the camera, of the second focusing gear is provided with an induction piece, and the infrared sensor is arranged at the end, close to the second focusing gear, of the lens fixing component and located on the displacement path of the induction piece. The utility model relates to the technical field of industrial photographing lenses.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial camera lenses, in particular to a universal lens focusing feedback structure. Background Art

[0002] In today's photography, projection and industrial photography fields, the development of lens technology is crucial to improving image quality and ease of application, especially for the focusing mechanism of general lenses. There are a series of technical bottlenecks in the market that need to be solved. Traditional lens focusing devices mostly rely on manual adjustment, which is not only cumbersome to operate, but also difficult to achieve high-precision focusing effects. This is particularly insufficient in the pursuit of modern imaging technology applications that pursue efficiency and precision. In addition, existing autofocus systems are often designed in a mode where the lens driver is separated from the motor. Such a design not only increases the complexity and volume of the system, but may also lead to limited focusing accuracy, and cannot meet the needs of high-end applications such as VR / AR testing and industrial module precision testing.

[0003] Another significant problem is that most lens focusing solutions on the market lack good versatility, that is, it is difficult to quickly replace lenses of different specifications, which is undoubtedly a major limitation for users who need to frequently change lenses to adapt to diverse shooting needs. This not only limits the flexibility of the equipment, but also affects work efficiency and user experience.

[0004] Therefore, it is imperative to design a universal lens focusing feedback structure. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the utility model provides a universal lens focusing feedback structure, aiming to solve the problems of inconvenient manual operation, low precision, poor versatility and insufficient automation in the lens focusing technology in the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a universal lens focusing feedback structure, including a camera, a lens focusing assembly and an infrared sensor, the shooting end of the camera is connected to the lens focusing assembly, the lens focusing assembly is provided with a closed-loop stepping motor, a first focusing gear, a second focusing gear, a lens component and a lens fixing component, the lens fixing component is sleeved on the outer diameter of the lens component, the first focusing gear is arranged at the output end of the closed-loop stepping motor, the second focusing gear is fixed on the focusing part of the lens component and meshes with the first focusing gear, a sensing element is arranged on the side of the second focusing gear close to the camera, and the infrared sensor is arranged at one end of the lens fixing component close to the second focusing gear and is located on the displacement path of the sensing element.

[0007] Based on the above, the beneficial effects of a general lens focusing feedback structure are as follows: it solves the problems of inconvenient manual operation, low precision, poor versatility, and insufficient automation in the existing lens focusing technology; specifically manifested in: the closed-loop stepper motor of the present utility model drives the second focusing gear through the first focusing gear to drive the focusing part to rotate, periodically approaching and triggering the infrared sensor to generate a focusing position feedback signal, achieving high-precision control of the focusing process. Compared with traditional manual or non-integrated designs, it significantly improves the accuracy and response speed of focusing; the present utility model can realize the autofocus function through the electrical signal connection with an external control device, reducing manual intervention, simplifying the operation process, and enhancing the user's operation experience; the beneficial effect of the camera is to ensure high-quality image capture, work in coordination with the lens focusing component to achieve automatic and precise focusing; the beneficial effect of the lens focusing component is to provide precise and efficient autofocus capabilities, enhancing the flexibility of shooting or detection; the beneficial effect of the infrared sensor is to monitor the focusing position in real time, feedback accurate data, and ensure high-precision and automated control of the focusing process; the beneficial effect of the closed-loop stepper motor is to achieve delicate adjustment of the focusing action, ensuring high accuracy and stability of focusing; the beneficial effect of the first focusing gear is to be directly connected to the motor and transmit power to the second focusing gear; the beneficial effect of the second focusing gear is to mesh with the first focusing gear, convert the motor driving force into precise movement of the lens, and achieve the focusing action; the beneficial effect of the lens component is to achieve the shooting effect required by the camera through replacement; the beneficial effect of the lens fixing component is to firmly support the lens, ensuring stability and accuracy during focusing; the beneficial effect of the sensing part is to be installed on the second focusing gear, rotate with the gear, trigger the sensor, and provide an accurate feedback signal of the focusing stroke.

[0008] Further, the focusing feedback structure is also provided with a lens support plate, on which a camera connection block is provided, and the camera is arranged on the camera connection block.

[0009] Based on the above, the beneficial effect of the lens support plate is to provide a stable installation platform; the beneficial effect of the camera connection block is to ensure that the camera is firmly installed on the support plate.

[0010] Further, the lens fixing component is composed of an installation arc groove part and a positioning arc groove part. The installation arc groove part is arranged on the lens support plate and sleeved on the lower half of the lens part. The positioning arc groove part is sleeved on the upper half of the lens part and is screw-connected to the installation arc groove part.

[0011] Based on the above, the beneficial effect of the installation arc groove part is to provide initial positioning and installation support for the lens, enhancing the stability of the structure; the beneficial effect of the positioning arc groove part is to ensure the lens is firmly fixed without shaking by screw-connecting the installation arc groove part.

[0012] Further, a motor positioning arc fork is provided on one side of the lens fixing member close to the second focusing gear, and the closed-loop stepper motor is fixed on the motor positioning arc fork and located above the lens member.

[0013] Based on the above, the beneficial effect of the motor positioning arc fork is to ensure the stable installation of the motor at a predetermined position.

[0014] Further, both the closed-loop stepper motor and the infrared sensor are electrically connected to an external control device.

[0015] To more clearly elaborate the above features of the present invention and the objectives to be achieved, the following further describes the present invention in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0016] Figure 1 : is a side view of the present invention;

[0017] Figure 2 : is a perspective view of the present invention.

[0018] Explanation of the reference numerals in the drawings: 1 - lens support plate, 11 - camera connection block, 2 - camera, 3 - lens focusing assembly, 31 - closed-loop stepper motor, 32 - first focusing gear, 33 - second focusing gear, 331 - sensing member, 34 - lens member, 341 - focusing portion, 35 - lens fixing member, 351 - mounting arc groove member, 352 - positioning arc groove member, 353 - motor positioning arc fork, 4 - infrared sensor. Detailed Embodiments

[0019] As Figures 1 to 2 shown, a general lens focusing feedback structure includes a camera 2, a lens focusing assembly 3, and an infrared sensor 4. The shooting end of the camera 2 is connected to the lens focusing assembly 3. The lens focusing assembly 3 is provided with a closed-loop stepper motor 31, a first focusing gear 32, a second focusing gear 33, a lens member 34, and a lens fixing member 35. The lens fixing member 35 is sleeved on the outer diameter of the lens member 34. The first focusing gear 32 is disposed at the output end of the closed-loop stepper motor 31. The second focusing gear 33 is fixed on the focusing portion 341 of the lens member 34 and meshes with the first focusing gear 32. A sensing member 331 is provided on one side of the second focusing gear 33 close to the camera 2. The infrared sensor 4 is disposed at one end of the lens fixing member 35 close to the second focusing gear 33 and is located on the displacement path of the sensing member 331.

[0020] The focus feedback structure is further provided with a lens support plate 1, on which a camera connection block 11 is arranged, and the camera 2 is arranged on the camera connection block 11.

[0021] The lens fixing member 35 is composed of a mounting arc groove member 351 and a positioning arc groove member 352. The mounting arc groove member 351 is arranged on the lens support plate 1 and sleeved on the lower half of the lens member 34. The positioning arc groove member 352 is sleeved on the upper half of the lens member 34 and is screwed to the mounting arc groove member 351.

[0022] On one side of the lens fixing member 35 close to the second focusing gear 33, a motor positioning arc fork 353 is arranged. The closed-loop stepper motor 31 is fixed on the motor positioning arc fork 353 and is located above the lens member 34.

[0023] Both the closed-loop stepper motor 31 and the infrared sensor 4 are electrically connected to an external control device.

[0024] In summary, the specific implementation manner of the present utility model is as follows: First, the control device sends a return-to-origin instruction. After receiving the instruction, the closed-loop stepper motor 31 starts and drives the second focusing gear 33 to rotate through the first focusing gear 32 until the sensing member 331 triggers the infrared sensor 4. At this time, the closed-loop stepper motor 31 pauses to complete the zero-point calibration. After confirming that the sensing member 331 is at the origin position, the control device sets the current position as the zero point of the focusing stroke.

[0025] According to the shooting requirements, the operator inputs the desired focusing end position on the control interface. The control device calculates the number of steps or distance that the closed-loop stepper motor 31 needs to move according to the input parameters and sends an instruction. The closed-loop stepper motor 31 starts to drive the second focusing gear 33 to rotate through the first focusing gear 32, thereby driving the focusing part 341 to continuously run along a predetermined path to a preset end position. During this process, the infrared sensor 4 continuously monitors the real-time position of the sensing member 331 and feeds it back to the control device.

[0026] As the closed-loop stepper motor 31 drives the rotation of the focusing part 341, the camera 2 takes pictures in real time according to a preset frequency or instruction. The shooting time point of each photo and the corresponding rotation position information of the closed-loop stepper motor 31 are synchronously recorded. The control device analyzes the received images, evaluates the clarity of each image using an algorithm, and compares indicators such as sharpness and contrast of images at different positions to determine which position has the clearest image.

[0027] Based on the analysis result of the image sharpness, the control device identifies the motor position corresponding to the clearest image, which is the optimal focus position, and sends an instruction to the closed-loop stepper motor 31 to accurately adjust to the optimal focus position and lock it, completing the autofocus process.

[0028] The above are only the optimal solution embodiments of the present invention and are not used to limit the present invention. Various modifications or substitutions made by those skilled in the art to the present invention without departing from the essence and protection scope of the present invention should also be within the protection scope of the present invention.

Claims

1. A universal lens focusing feedback structure, characterized in that: The invention comprises a camera (2), a lens focusing assembly (3) and an infrared sensor (4); the shooting end of the camera (2) is connected to the lens focusing assembly (3); the lens focusing assembly (3) is provided with a closed-loop stepping motor (31), a first focusing gear (32), a second focusing gear (33), a lens component (34) and a lens fixing component (35); the lens fixing component (35) is sleeved on the outer diameter of the lens component (34); the first focusing gear (32) is provided at the output end of the closed-loop stepping motor (31); the second focusing gear (33) is fixed on the focusing part (341) of the lens component (34) and meshes with the first focusing gear (32); a sensing component (331) is provided on a side of the second focusing gear (33) close to the camera (2); and the infrared sensor (4) is provided at one end of the lens fixing component (35) close to the second focusing gear (33) and is located on the displacement path of the sensing component (331).

2. The universal lens focusing feedback structure according to claim 1, characterized in that: The focus feedback structure is also provided with a lens support plate (1), a camera connection block (11) is provided on the lens support plate (1), and the camera (2) is provided on the camera connection block (11).

3. The universal lens focusing feedback structure according to claim 2, characterized in that: The lens fixing component (35) is composed of a mounting arc groove component (351) and a positioning arc groove component (352); the mounting arc groove component (351) is arranged on the lens supporting plate (1) and is sleeved on the lower half of the lens component (34); the positioning arc groove component (352) is sleeved on the upper half of the lens component (34) and is screwed to the mounting arc groove component (351).

4. The universal lens focusing feedback structure according to claim 1, characterized in that: A motor positioning arc fork (353) is provided on one side of the lens fixing component (35) close to the second focusing gear (33); the closed-loop stepping motor (31) is fixed on the motor positioning arc fork (353) and is located above the lens component (34).

5. The universal lens focusing feedback structure according to claim 1, characterized in that: The closed-loop stepping motor (31) and the infrared sensor (4) are both connected to an external control device via electrical signals.

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