Endoscope imaging device
By designing an endoscopic imaging device and adopting a combination of a self-aligning structure and a displacement stage, the problems of slow testing speed and inaccurate data of electronic endoscopes were solved, achieving high efficiency, high accuracy and high consistency in testing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RISING ELECTRO OPTICS LTD
- Filing Date
- 2025-01-02
- Publication Date
- 2026-06-05
AI Technical Summary
Current technologies for electronic endoscopes suffer from slow testing speeds and inaccurate data, failing to meet the demands for high-efficiency, high-accuracy, and high-consistency testing.
An endoscopic imaging device was designed, including an optical plate, a data acquisition module, a lens module, a target module, and a light source module. It adopts a self-aligning structure and ensures the alignment of the CCD camera, lens, and target center through a combination of a displacement stage and a rotation stage, thereby achieving efficient, accurate, and consistent testing.
This technology enables efficient, accurate, and consistent testing of electronic endoscope lenses, improving testing efficiency and accuracy.
Smart Images
Figure CN224320692U_ABST
Abstract
Description
Technical fields:
[0001] This utility model relates to an endoscopic imaging device. Background technology:
[0002] With the increasing demand for minimally invasive surgery, endoscopes, as an important part of minimally invasive surgical examinations, are increasingly needed by doctors to observe the surgical site through connected display devices. Electronic endoscopes are widely used in hospital endoscopy rooms for diagnosis and surgery, and their image quality is crucial for doctors' judgment. Therefore, the accuracy and efficiency of image quality testing for electronic endoscope lenses are particularly important.
[0003] Currently, the testing of small lenses such as electronic endoscopes is rather crude, with few standard endoscope testing systems available. As a result, testing is slow and the data is inaccurate, failing to meet the requirements for high efficiency, high accuracy, and high consistency. Utility model content:
[0004] This utility model addresses the problems existing in the prior art by providing an endoscopic imaging device.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an endoscopic imaging device, comprising an optical plate, a data acquisition module, a lens module, a target module, and a light source module. The data acquisition module includes a base mounted on the optical plate, and a camera base that can move horizontally and vertically is provided above the base. A CCD camera is mounted on the camera base. The lens module includes a lens centering seat that is horizontally positioned above the camera base and can be raised and lowered vertically. A replaceable lens mount is mounted on the lens centering seat. The target module includes a movable target slot, on which a target located above the lens centering seat is horizontally mounted. The light source module includes a light source that is positioned above the target slot and can be raised and lowered.
[0006] Furthermore, the acquisition module also includes a displacement stage assembly mounted on the base, which drives the camera base to move laterally and longitudinally in the horizontal plane.
[0007] Furthermore, the displacement stage assembly includes a horizontal displacement stage A, a Z-axis displacement stage A is mounted on the moving end of the horizontal displacement stage A, and the camera base is mounted on the moving end of the Z-axis displacement stage A.
[0008] Furthermore, a camera mounting bracket is installed on the camera base, and the CCD camera is mounted on the camera mounting bracket with tolerance fit.
[0009] Furthermore, the lens module also includes a Z-axis displacement stage B located on the left side of the displacement stage assembly. The Z-axis displacement stage B is mounted on the base, and the moving end of the Z-axis displacement stage B is connected to the lens centering seat to drive the lens centering seat to move vertically up and down.
[0010] Furthermore, the target module also includes a horizontal displacement stage B mounted on an optical flat plate. A rotary table is mounted on the moving end of the horizontal displacement stage B, and a Z-axis displacement stage C is mounted on the rotating end of the rotary table. A target slide groove arranged longitudinally is mounted on the moving end of the Z-axis displacement stage C. The target slot is installed on the target slide rail through a slot fit, and is used to adjust the position of the target in the front-back direction.
[0011] Furthermore, the target module also includes a limiting screw, which is installed in the side slot of the target slot and used to lock the target.
[0012] Furthermore, the light source module also includes a Z-axis displacement stage D mounted on an optical flat plate. The moving end of the Z-axis displacement stage D is connected to the light source to drive the light source to move vertically up and down.
[0013] Furthermore, the replaceable lens mount is installed on the lens centering mount via a set screw.
[0014] Furthermore, both the camera base and the camera mounting hardware are made of thermally conductive materials.
[0015] Compared with the prior art, the present invention has the following advantages: The present invention has a reasonable structural design, which effectively ensures the alignment of the CCD camera, lens and target center during testing, and can test the electronic endoscope lens more efficiently, accurately and consistently. Attached image description:
[0016] Figure 1 This is a schematic diagram of the main structure of an embodiment of this utility model;
[0017] Figure 2 This is a schematic diagram of the left-side structure of an embodiment of the present invention;
[0018] Figure 3 This is a schematic diagram of the CCD camera fixing structure in an embodiment of this utility model;
[0019] Figure 4 This is a schematic diagram of the lens centering structure in an embodiment of this utility model;
[0020] Figure 5 This is an example diagram of the auxiliary target in an embodiment of this utility model;
[0021] Figure 6 This is a top view schematic diagram of the target module in an embodiment of this utility model;
[0022] Figure 7 This is a schematic diagram of the left-side structure of the target module in an embodiment of this utility model.
[0023] In the picture:
[0024] 1-Optical flat panel; 2-Base; 3-Horizontal displacement stage A; 4-Z-axis displacement stage A; 5-Camera base; 6-CCD camera; 7-Camera mounting hardware; 8-Z-axis displacement stage B; 9-Lens centering mount; 10-Replaceable lens mount; 11-Horizontal displacement stage B; 12-Rotation stage; 13-Z-axis displacement stage C; 14-Target slide rail; 15-Target slot; 16-Target; 17-Limit screw; 18-Z-axis displacement stage D; 19-Light source. Detailed implementation method:
[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0026] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 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.
[0027] It should be noted that the horizontal direction mentioned below refers to the X-axis direction, the vertical direction refers to the Y-axis direction, and the vertical direction refers to the Z-axis direction.
[0028] like Figures 1-7 As shown, the present invention provides an endoscopic imaging device, comprising an optical plate 1, a data acquisition module, a lens module, a target module, and a light source module, wherein the data acquisition module, the target module, and the light source module are all mounted on the optical plate 1.
[0029] The acquisition module includes an L-shaped base 2 mounted on an optical plate 1. The long side of the L-shaped base is fixedly connected to the optical plate, and the short side of the L-shaped base is located on the left side. A camera base 5, which can move horizontally and vertically, is provided above the base 2, and a CCD camera 6 is mounted on the camera base 5. The lens module includes a lens centering mount 9, which is horizontally positioned above the camera base 5 and can be raised and lowered vertically. A replaceable lens mount 10 is mounted on the lens centering mount 9. The target module includes a movable target slot 15, on which a target 16 is horizontally mounted above the lens centering mount 9. The light source module includes a light source 19, which is positioned above the target slot 15 and can be raised and lowered. This device is designed with a self-aligning structure, which effectively ensures the alignment of the CCD camera, lens, and target center, enabling more efficient, accurate, and consistent testing of electronic endoscope lenses.
[0030] In this embodiment, the acquisition module further includes a displacement stage assembly installed on the long side of the base 2. The displacement stage assembly drives the camera base 5 to move laterally and longitudinally in the horizontal plane (that is, to move along the X-axis and Y-axis directions in the horizontal plane).
[0031] In this embodiment, the displacement stage assembly specifically includes a horizontal displacement stage A3, and a Z-axis displacement stage A4 is mounted on the moving end of the horizontal displacement stage A3. The horizontal displacement stage A3 drives the Z-axis displacement stage A4 to move along the X-axis and Y-axis directions. The camera base 5 is mounted on the moving end of the Z-axis displacement stage A4, and the Z-axis displacement stage A4 drives the camera base to move vertically along the Z-axis. In use, the horizontal displacement stage A3 drives the Z-axis displacement stage A4 and the camera base to move laterally and longitudinally in the horizontal plane (that is, to move along the X-axis and Y-axis directions in the horizontal plane), and the Z-axis displacement stage A3 drives the camera base to move vertically along the Z-axis.
[0032] In this embodiment, a camera mounting bracket 7 is installed on the camera base 5, and the CCD camera 6 is installed on the camera mounting bracket 7 with tolerance fit and does not need to be disassembled.
[0033] In this embodiment, the lens module further includes a Z-axis displacement stage B8 located on the left side of the displacement stage assembly. The Z-axis displacement stage B8 is mounted on the short side of the base 5, and its moving end is connected to the lens centering seat 9. The Z-axis displacement stage B8 drives the lens centering seat 9 to move vertically up and down. The replaceable lens mount 10 is fixed to the lens centering seat 9 by a set screw to ensure the stability of the lens during testing. The lens centering seat 9 has a chamfer at the lens placement area, which facilitates lens installation and replacement.
[0034] In this embodiment, the target module further includes a horizontal displacement stage B11 mounted on the optical flat plate 1. A rotary table 12 is mounted on the moving end of the horizontal displacement stage B11, driving the rotary table 12 to move along the X and Y axes. A Z-axis displacement stage C13 is mounted on the rotating end of the rotary table 12, and a longitudinally arranged target slot 15 is mounted on the moving end of the Z-axis displacement stage C13. The target slot 15 is mounted to the target slide rail 14 via a slotted joint, used to adjust the target's position in the front-to-back direction. The horizontal displacement stage B11 is used to fine-tune the target's position, aligning the target center with the center of the field of view. The rotary table 12 is used to adjust the target's angle and facilitates target replacement. The Z-axis displacement stage C13 drives the target's vertical displacement. The target slide rail 14 can adjust the width of the target slot 15 according to the designed target size. The target slot 15 is mounted to the target slide rail 14 via a handle screw.
[0035] In this embodiment, the target module further includes a limiting screw 17, which is installed in the side slot of the target slot 15 and used to lock the target 16. The limiting screw 17 restricts the position of the target 16, ensuring that the center of the target coincides with the center of the field of view after it is fully inserted.
[0036] In this embodiment, the light source module further includes a Z-axis displacement stage D18 mounted on the optical flat plate 1. The moving end of the Z-axis displacement stage D18 is connected to the light source 19 to drive the light source 19 to rise and fall vertically, ensuring that the light source 19 always fills the entire field of view.
[0037] In this embodiment, the target 16 is designed with dimensions based on the field of view and working distance of the lens. The target is designed with a center auxiliary line and position ratio. According to the test requirements, information such as resolution line pairs and distortion points are set at the corresponding positions to test the center of the lens imaging and the image quality at the corresponding positions under different positions. There are cross marks with scales on the target surface, which can be used to determine the magnification of the lens under test.
[0038] In this embodiment, both the camera base and the camera mounting hardware are made of thermally conductive materials, which effectively improves the heat dissipation of the CCD camera 6 and helps to extend its service life.
[0039] In this embodiment, the CCD camera 6 position adjustment system in the acquisition module is independent of the lens module, and can independently adjust the position of the CCD camera 6 without affecting the position of the lens.
[0040] In this embodiment, the replaceable lens mount 10 in the lens module is sized and adjusted according to the size and structure of the lens, and is replaced according to the structure of the lens being tested.
[0041] In this embodiment, the horizontal displacement stage B can finely adjust the position of the target 16 to prevent the lens from being unable to center due to eccentricity, and the rotary stage E12 is used for target replacement and adjustment.
[0042] In this embodiment, the target ratio is consistent with the resolution ratio of the resolution camera, and a centering auxiliary pattern is present.
[0043] In this embodiment, the horizontal displacement stage A, Z-axis displacement stage A, horizontal displacement stage B, Z-axis displacement stage B, Z-axis displacement stage C, and Z-axis displacement stage D are all existing manual displacement stages, and the rotary stage is also an existing manual rotary stage. They are all existing mature products, and their specific structures and working principles will not be described in detail here.
[0044] In this embodiment, the method of using the endoscopic imaging device includes the following steps:
[0045] Step S1: Select a replaceable lens mount 10 that matches the lens to be tested and install the target onto the endoscope imaging system;
[0046] Step S2: Install the lens to be tested onto the replaceable lens mount 10, adjust the Z-axis displacement stage C13 so that the target 16 is located at the lens design working distance, fine-tune the horizontal displacement stage A3 until the image of the CCD camera 6 is the target image, and fix the horizontal displacement stage A3 and the Z-axis displacement stage B8.
[0047] Step S3: Fine-tune the Z-axis displacement stage A4 to control the back focus until the image plane is clear, adjust the position of the target slot 15, and when the target center auxiliary line coincides with the image plane center auxiliary line, fix the target slot 15 and the limit screw 17.
[0048] Step S4: When changing the test item, simply reinsert the target into the bottom of the target slot 15 to complete the centering. When changing to the same test lens, simply insert the new lens into the replaceable base 10, adjust the horizontal displacement stage B11 according to the lens eccentricity, and fine-tune the Z-axis displacement stage B4.
[0049] Step S5: When testing with lenses of different specifications, simply replace the compatible interchangeable lens mount and repeat steps S2-S4.
[0050] The advantages of this utility model are: (1) When adjusting the back focus of the lens, only the Z-axis displacement stage A needs to be finely adjusted, which has high precision and high convenience. When testing the same lens, only the Z-axis displacement stage A needs to be finely adjusted when changing the lens; (2) The acquisition module and the lens module are integrated, which effectively ensures the relative position of the CCD camera and the lens, and ensures that all images received by the CCD camera are lens images; (3) The pattern position and size of the target are designed according to the lens specifications. There are adjustable limit screws on the target slot, which are adjusted according to the lens specifications to ensure that the target can be located in the center of the field of view each time it is inserted, thus ensuring the consistency of the test conditions and improving the test efficiency; (4) The test system is built with a vertical structure and the interchangeable lens mount is used to cooperate with the lens positioning, which can ensure the consistency of the initial position of the lens each time it is placed; and the backlight is separated from the test target, which improves the convenience of target adjustment and replacement.
[0051] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).
[0052] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.
[0053] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.
[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. An endoscopic imaging device, characterized in that: The system includes an optical flat panel, a data acquisition module, a lens module, a target module, and a light source module. The data acquisition module includes a base mounted on the optical flat panel, and a camera base that can move horizontally and vertically above the base, on which a CCD camera is mounted. The lens module includes a lens centering mount that is horizontally positioned above the camera base and can be raised and lowered vertically, on which a replaceable lens mount is mounted. The target module includes a movable target slot on which a target is horizontally mounted above the lens centering mount. The light source module includes a light source that is positioned above the target slot and can be raised and lowered.
2. The endoscopic imaging device according to claim 1, characterized in that: The acquisition module also includes a displacement stage assembly mounted on the base, which drives the camera base to move laterally and longitudinally in the horizontal plane.
3. The endoscopic imaging device according to claim 2, characterized in that: The displacement stage assembly includes a horizontal displacement stage A, a Z-axis displacement stage A is mounted on the moving end of the horizontal displacement stage A, and the camera base is mounted on the moving end of the Z-axis displacement stage A.
4. The endoscopic imaging device according to claim 1, characterized in that: A camera mounting bracket is installed on the camera base, and the CCD camera is mounted on the camera mounting bracket with tolerance fit.
5. An endoscopic imaging device according to claim 2, characterized in that: The lens module also includes a Z-axis displacement stage B located on the left side of the displacement stage group. The Z-axis displacement stage B is mounted on the base, and the moving end of the Z-axis displacement stage B is connected to the lens centering seat to drive the lens centering seat to move vertically up and down.
6. The endoscopic imaging device according to claim 1, characterized in that: The target module also includes a horizontal displacement stage B mounted on an optical flat plate. A rotary table is mounted on the moving end of the horizontal displacement stage B, and a Z-axis displacement stage C is mounted on the rotating end of the rotary table. A target slide groove arranged longitudinally is mounted on the moving end of the Z-axis displacement stage C. The target slot is installed on the target slide rail through a slot and is used to adjust the position of the target in the front-back direction.
7. The endoscopic imaging device according to claim 1, characterized in that: The target module also includes a limiting screw, which is installed in the side slot of the target slot and used to lock the target.
8. An endoscopic imaging device according to claim 1, characterized in that: The light source module also includes a Z-axis displacement stage D mounted on an optical flat plate. The moving end of the Z-axis displacement stage D is connected to the light source to drive the light source to move vertically up and down.
9. An endoscopic imaging device according to claim 1, characterized in that: The replaceable lens mount is installed on the lens centering mount via a set screw.
10. An endoscopic imaging device according to claim 4, characterized in that: Both the camera base and the camera mounting hardware are made of thermally conductive materials.