Device for mobile target plate based on lens projection image adjustment

Abstract

The utility model discloses a kind of mobile target plate's device based on lens projection image adjustment, including workbench, projector, target plate assembly and guide rail assembly, the projector is fixed on workbench, image adjustment lens is equipped on the projector, the guide rail assembly is located in the side of workbench, the guide rail assembly includes slide rail, mobile seat and gyro wheel, the bottom of the mobile seat is rotatably equipped with several gyro wheels, the gyro wheel and the slide rail rolling type cooperation, for supporting and guiding the mobile seat moves along slide rail, the target plate assembly includes target plate, the target plate is fixedly installed on the mobile seat, for receiving the target image projected by projector projection. The present application does not need to move projector back and forth, when zooming, only need to press guide rail button to move forward and backward, make the target image size consistent, save a lot of time and manpower.

Description

Technical Field

[0001] This utility model belongs to the field of lens image adjustment technology, specifically relating to a device for a moving target plate based on lens projection image adjustment. Background Technology

[0002] With the rapid development of the lens industry, especially the continuous upgrading and iteration of products such as cinema lenses, photographic lenses, and special imaging lenses, the requirements for the flexibility of equipment in lens image adjustment and focus calibration are becoming increasingly stringent. Most existing image adjustment structures use fixed target plates. When the projector projects the target image onto the target plate at a fixed distance, the imaging scale of different lens specifications and zoom lenses changes significantly during zooming. The size of the target projection varies with the focal length, making it difficult for image adjusters to stably observe image details, thus affecting the accuracy of image adjustment.

[0003] In existing technologies, to maintain a suitable target image size during zooming, image adjusters typically need to repeatedly move the projector to change the projection distance and achieve the appropriate projection size. However, this manual movement method is not only time-consuming and labor-intensive but also heavily reliant on the operator's experience, making it difficult to maintain precise consistency in adjustments. Furthermore, due to the projector's large size and weight, repeated movements can easily lead to projection axis misalignment or even imaging errors, resulting in low overall image quality that fails to meet the current demands of lens production for high-efficiency, high-precision image adjustment. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a device for a movable target plate based on lens projection image adjustment, comprising a worktable, a projector, a target plate assembly, and a guide rail assembly. The projector is fixed to the worktable and is equipped with an image adjustment lens. The guide rail assembly is located on the side of the worktable and includes a slide rail, a movable base, and rollers. The bottom of the movable base is rotatably equipped with several rollers, which roll in cooperation with the slide rail to support and guide the movable base to move along the slide rail. The target plate assembly includes a target plate, which is fixedly installed on the movable base to receive the target image projected by the projector.

[0005] Preferably, the target plate assembly further includes an image receiving lens, the output end of which is connected to a signal transmitter. The worktable is provided with a signal receiver that receives signals from the signal transmitter and a display screen. The signal receiver is electrically connected to the display screen, and the display screen is used to display the target image captured by the image receiving lens.

[0006] Preferably, the movable seat is equipped with a drive motor, the output end of which is connected to the roller drive for driving the roller to rotate, thereby moving the movable seat along the slide rail.

[0007] Preferably, the target plate is a diffuse reflective material plate with a target pattern on it.

[0008] Preferably, the slide rail is an aluminum profile linear slide rail.

[0009] The advantages of this utility model are: 1. This solution utilizes an electrically driven movable base, enabling the target plate to move automatically and precisely along the optical path, quickly compensating for changes in projection size caused by zooming, eliminating the need to move the projector. Adjustment personnel can complete the adjustment simply by pressing a button, significantly saving time and improving overall image adjustment efficiency.

[0010] 2. The movable base in this design uses a combination of rollers and slide rails for movement, resulting in low rolling resistance and stable positioning. The motor-driven rollers allow for continuous or minute displacement, enabling more precise adjustment of the target plate position. Since the projector does not need to be moved, optical path offset, angular errors, and vibration interference are avoided, ensuring that the target image remains stable and consistent across different focal lengths. This improves the consistency and repeatability of the image adjustment data.

[0011] 3. This solution's target plate assembly is equipped with an image receiving lens and wirelessly transmits and receives signals to display the target image in real time on the workbench's screen. The image adjuster can clearly observe image details without needing to approach the target plate, making it particularly suitable for scenarios with large lenses, long-distance image adjustment, or obstructed light paths. This structure significantly improves operational convenience, making the image adjustment process safer, more efficient, and more flexible. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a side view of the present invention.

[0014] Figure 3 This is a structural diagram of the target plate assembly and guide rail assembly of this utility model.

[0015] In the diagram: 1. Workbench, 2. Projector, 3. Image adjustment lens, 4. Slide rail, 5. Movable seat, 6. Roller, 7. Target plate, 8. Image receiving lens, 9. Signal transmitter, 10. Display screen, 11. Signal receiver. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Simultaneously, when an component is referred to as "fixed to" or "equipped on" another component, it can be directly on the other component or may have an intervening component present. When an component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present. When an component is referred to as "fixedly connected to" another component, it can be a common fixed connection method such as welding, bolting, or gluing. In short, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Example 1, such as Figure 1-3 As shown, a device for a movable target plate based on lens projection image adjustment includes a worktable 1, which is a support platform with a certain flatness and rigidity for supporting a projector 2. A guide rail assembly is set on one side of the worktable. The worktable 1 can be made of steel or aluminum alloy frame to ensure its installation stability. The projector 2 is fixedly installed on the surface of the worktable 1 via a mounting base or fixed bracket. The light path of the projector 2 faces one side of the worktable 1, and its front end is equipped with an image adjustment lens 3 for lens imaging adjustment. The image adjustment lens 3 can adjust the focal length, zoom state, and optical imaging quality according to the lens testing requirements, projecting the target image onto the target plate 7 during lens testing, thereby providing a stable imaging reference for the lens adjustment personnel.

[0020] A guide rail assembly is arranged on the side of the projector 2 facing the light output direction. The guide rail assembly is positioned on the side of the worktable 1 along a direction approximately in the same straight line as the projection light path. The guide rail assembly includes a slide rail 4, a movable base 5, and rollers 6 located at the bottom of the movable base 5. The slide rail 4 is a linear guide rail, which can be a slotted aluminum profile slide rail 4 or a precision linear guide rail, with grooves on it for the rollers 6 to roll. The slide rail 4 is securely installed with screws, and its front-to-back direction is consistent with the projection direction of the projector 2. The movable base 5 is mounted on the slide rail 4 and can move back and forth along the slide rail 4. Several rollers 6 are located at the bottom of the movable base 5. These rollers 6 are rotatably mounted on the lower surface of the movable base 5 and contact the rolling surface of the slide rail 4, enabling the movable base 5 to move smoothly and stably on the slide rail 4. The rollers 6 can be made with a wear-resistant rubber coating to reduce rolling noise and improve smoothness of movement.

[0021] A target plate assembly is mounted on the upper part of the movable base 5. The target plate assembly includes a target plate 7, which is fixedly installed at the end of the movable base 5 by fasteners, positioning it directly in front of the light output direction of the projector 2. It is used to receive the target image projected by the projector 2. The target plate 7 is made of a diffuse reflective material, with a target pattern on its front side. Through the uniform reflection characteristics of the diffuse reflective plate, the projected image remains clear and without obvious bright spots when viewed from different angles, which is beneficial for the lens adjuster to observe the image center, resolution details, and aberrations. The target plate 7 can be made of a polymer diffuse reflective whiteboard, frosted glass, or a coated board with a uniform scattering structure.

[0022] The target plate assembly also includes an image receiving lens 8, which is mounted at the end of the movable base 5 and angled to capture the projected image on the target plate 7. The output of the image receiving lens 8 is connected to a signal transmitter 9, which wirelessly transmits the image signal captured by the lens 8 to a display screen 10 on the workbench 1. To receive the signal, a signal receiver 11 is mounted on the display screen 10 and establishes a stable connection with the signal transmitter 9 via wireless communication, allowing the image on the target plate 7 to be displayed on the display screen 10 in real time for the image adjustment personnel to observe the imaging status. This structure is particularly suitable for image adjustment testing when operation is required at a distance or when the lens needs to block the projection light path, improving adjustment efficiency through independent display.

[0023] To enable automatic forward and backward movement of the target plate 7, a drive motor (not shown in the figure) is installed on the moving base 5. The drive motor can be a DC motor, stepper motor, or servo motor, and is connected to one or more rollers 6 at the bottom of the moving base 5 via its output shaft. The rotation of the drive motor causes the rollers 6 to roll, thus driving the moving base 5 to move smoothly along the slide rail 4. The drive motor can be started, stopped, and directional controlled using control buttons, a control panel, or a remote control. The operator can adjust the forward and backward position of the moving base 5 by pressing buttons according to changes in the size of the projected image, ensuring the projected image remains at a suitable size. This significantly reduces the need for manual handling of the projector 2, improving the consistency and stability of image adjustment. A dedicated controller on the moving base 5 controls the drive motor. The moving base 5, drive motor, and rollers 6 together form an electric track vehicle.

[0024] When using this device for lens image adjustment, the target pattern of the projector 2 is first projected onto the target plate 7. During lens zooming, the size of the projected image changes. The image adjustment operator simply needs to electrically drive the movable base 5 to move back and forth along the slide rail 4, causing the distance between the target plate 7 and the projector 2 to change in real time, thus compensating for the change in projected image size caused by the focal length change. By fine-tuning the target plate 7 along the optical path, the size of the displayed target image can be kept within a suitable viewing range for the image adjustment operator, significantly improving the efficiency of the image adjustment work. Simultaneously, since the entire adjustment process is controlled by a motor, frequent movement of the projector 2 is unnecessary, avoiding problems such as projection angle shift and optical path disturbance, resulting in a higher degree of standardization in image adjustment.

[0025] This device features a simple structure, convenient operation, and stable and reliable movement, making it particularly suitable for image adjustment of various focal length lenses, zoom lenses, and large-aperture lenses. It achieves precise adjustment of the target plate 7 position through an electrically adjustable mechanism, reducing errors caused by traditional manual operation and improving the efficiency and quality of lens image adjustment. The structure described in this embodiment can be appropriately replaced or adjusted according to actual needs, but none of these modifications exceed the protection scope of this utility model.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for a movable target plate based on lens projection image adjustment, characterized in that: The system includes a workbench (1), a projector (2), a target plate assembly, and a guide rail assembly. The projector (2) is fixed on the workbench (1) and has an image adjustment lens (3). The guide rail assembly is located on the side of the workbench (1) and includes a slide rail (4), a movable seat (5), and rollers (6). The bottom of the movable seat (5) is provided with several rollers (6), which are rolled in conjunction with the slide rail (4) to support and guide the movable seat (5) to move along the slide rail (4). The target plate assembly includes a target plate (7), which is fixedly installed on the movable seat (5) to receive the target image projected by the projector (2).

2. The device for a moving target plate based on lens projection image adjustment according to claim 1, characterized in that: The target plate assembly also includes an image receiving lens (8), the output end of which is connected to a signal transmitter (9). The workbench (1) is provided with a signal receiver (11) and a display screen (10) for receiving signals from the signal transmitter (9). The signal receiver (11) and the display screen (10) are electrically connected. The display screen (10) is used to display the target image acquired by the image receiving lens (8).

3. The device for a movable target plate based on lens projection image adjustment according to claim 2, characterized in that: The movable seat (5) is equipped with a drive motor, and the output end of the drive motor is connected to the roller (6) for driving the roller (6) to rotate, thereby driving the movable seat (5) to move along the slide rail (4).

4. The device for a movable target plate based on lens projection image adjustment according to claim 3, characterized in that: The target plate (7) is a diffuse reflective material plate with a target pattern on it.

5. The device for a movable target plate based on lens projection image adjustment according to claim 4, characterized in that: The slide rail (4) is an aluminum profile linear slide rail (4).

Images