Endoscope assembly jig and inspection method

Abstract

This application discloses an endoscope assembly fixture and inspection method, relating to the field of endoscope assembly technology. It is used for assembling the lens and chip of a high-resolution endoscope. The endoscope assembly fixture includes: a base plate, a light source, a first movable component, a gripper mechanism, a second movable component, a conductive fixture, a third movable component, and a test target. The light source is movably disposed on one side of the base plate with a gap between it and the base plate; the gripper mechanism is movably disposed between the light source and the base plate, and grips the lens; the conductive fixture is movably disposed between the light source and the base plate, and electrically connected to the chip for external imaging; the test target is disposed on the side of the light source facing the base plate. This application allows for real-time observation of image effects, ensuring that the alignment accuracy of the lens and chip remains within a high range.

Description

Technical Field

[0001] This application relates to the field of endoscope assembly technology, and in particular to an endoscope assembly fixture and inspection method. Background Technology

[0002] With the rapid development of the endoscope market, the variety of endoscope products has diversified, and the pixel count of different types of endoscopes has been updated from 16W to 80W, or even higher. High-pixel endoscope modules make it easier for doctors to observe and improve the accuracy of their judgments.

[0003] An endoscope module mainly consists of core components such as a lens, a chip, and a circuit board. The alignment accuracy requirement for conventional low-pixel endoscope lenses and chips is within ±40µm, while the alignment accuracy requirement for high-pixel endoscope lenses and chips is within ±20µm.

[0004] However, lenses and chips are usually assembled by bonding, which results in low precision and the inability to observe images in real time. This method is suitable for low-pixel products, while high-pixel endoscopes have higher requirements for assembly precision and are more difficult to assemble. Summary of the Invention

[0005] The main purpose of this application is to provide an endoscope assembly fixture and inspection method, which aims to solve the technical problem of the difficulty in assembling existing high-resolution endoscopes.

[0006] To achieve the above objectives, this application provides an endoscope assembly fixture for assembling the lens and chip of a high-resolution endoscope. The endoscope assembly fixture includes: a base plate, a light source, a first movable component, a gripper mechanism, a second movable component, a communication fixture, a third movable component, and a test target. The light source is movably disposed on one side of the base plate and has a gap between it and the base plate. The first movable component connects the light source and the base plate and drives the light source to move in multiple directions. The gripper mechanism is movably disposed between the light source and the base plate and grips the lens. The second movable component connects the gripper mechanism and the base plate and drives the gripper mechanism to move and rotate in multiple directions. The communication fixture is movably disposed between the light source and the base plate and is electrically connected to the chip for external imaging. The third movable component connects the communication fixture and the base plate and drives the communication fixture to move in multiple directions. The test target is disposed on the side of the light source facing the base plate.

[0007] Optionally, the first movable component includes: a first displacement slide, a first positioning plate, a sliding adjustment mechanism, and a mounting plate. The first displacement slide is connected to the base plate and has degrees of freedom to slide along a first direction and a second direction, respectively. The first direction and the second direction are perpendicular to each other and both are parallel to the base plate. The first positioning plate is vertically disposed on the side of the first displacement slide away from the base plate. The sliding adjustment mechanism is disposed on one side of the first positioning plate and has degrees of freedom to slide along a third direction, which is the same as the thickness direction of the base plate. The mounting plate connects the sliding adjustment mechanism and the light source. The mounting plate is opposite to the base plate in the third direction, and the light source is disposed on the side of the mounting plate facing the base plate.

[0008] Optionally, the sliding adjustment mechanism includes: a slide rail, a slider, and a locking knob; the slide rail is fixed to the first positioning plate and extends in a third direction; the slider slides in cooperation with the slide rail; the locking knob connects the slider and the slide rail to lock or release the slider's degree of freedom of movement; wherein, the mounting plate is fixed to the slider.

[0009] Optionally, the second movable component includes: a second displacement slide, a second positioning plate, and a rotation mechanism. The second displacement slide is connected to the base plate and has degrees of freedom to slide along a first direction and a second direction, both of which are perpendicular to each other and parallel to the base plate. The second positioning plate is vertically disposed on the side of the second displacement slide away from the base plate. The rotation mechanism is disposed on one side of the second positioning plate and has degrees of freedom to rotate around the first direction, the second direction, and a third direction, respectively, with the third direction being the same as the thickness direction of the base plate. The gripper mechanism is disposed on the rotation mechanism, and the center of the lens coincides with the rotation center of the rotation mechanism in the three directions.

[0010] Optionally, the gripper mechanism includes: a connecting plate, two grippers, and a drive unit. The connecting plate is connected to the rotating mechanism. The two grippers are disposed opposite to each other on the connecting plate in a direction parallel to the base plate. The opposite direction of the two grippers is a relative direction. The grippers have the freedom to slide along the relative direction to grip the lens. The drive unit connects the two grippers and the connecting plate, and the drive unit provides a sliding driving force for the two grippers.

[0011] Optionally, the drive unit has two parts, each connected to one of the two grippers.

[0012] Optionally, the contact area between the gripper and the lens is provided with an arc-shaped groove.

[0013] Optionally, the third movable component includes: a first adjusting part and a second adjusting part, the first adjusting part being connected to the base plate, the first adjusting part having a degree of freedom to slide along a first direction, the first direction being parallel to the base plate; the second adjusting part being disposed on the side of the first adjusting part away from the second adjusting part and having a degree of freedom to slide along a third direction, the third direction being the same as the thickness direction of the base plate.

[0014] Optionally, the first movable component, the second movable component, and the third movable component are spaced apart in a first direction, which is parallel to the base plate; in a third direction, the guiding fixture, the gripper mechanism, and the light source are spaced apart in a direction away from the base plate, which is the same as the thickness direction of the base plate.

[0015] On the other hand, to achieve the above objectives, this application also provides an inspection method applied to the aforementioned endoscope assembly fixture. The inspection method includes: replacing the test target with a lens inspection-specific test target, on which a pair of lines is provided; adjusting the positions of the lens inspection-specific test target, the lens, and the chip using a first movable component, a second movable component, and a third movable component until the center of the lens inspection-specific test target, the center of the effective area of ​​the lens, and the center of the photosensitive area of ​​the chip are coaxial in a third direction, the third direction being the same as the thickness direction of the base plate; adjusting the position of the lens inspection-specific test target in the third direction using the first movable component until the distance between the lens inspection-specific test target and the lens in the third direction is a preset distance; adjusting the angle of the lens and the position of the chip in the third direction using the second movable component and the third movable component respectively until the external image is clearest; observing whether the line pairs can be seen clearly. If they can be seen clearly, the lens is qualified and assembly can proceed normally; if they cannot be seen clearly, the lens is unqualified and a new lens is replaced.

[0016] This application proposes an endoscope assembly fixture. A lens is held by a gripper mechanism, and a chip is placed on a conductive fixture, which is then connected to an external display device for external imaging. This allows for real-time image observation. The positions of the test target, chip, and lens are adjusted via a first, second, and third movable component, ensuring that the center of the test target, the center of the chip's photosensitive area, and the center of the lens's effective area coincide in the third direction. At this point, the chip and test target are positioned on opposite sides of the lens. The lens angle is then fine-tuned using the second movable component, and the positions of the test target and chip in the third direction are adjusted using the first and third movable components to achieve the clearest image. The chip's position is recorded at this point. The chip's position is then adjusted by the third movable component, moving it away from the lens. Adhesive is applied to the chip's edge area, and the chip is moved back to the recorded position. The adhesive between the chip and lens is pre-cured by illumination, followed by heat curing, completing the assembly of the lens and chip. Because the image effect can be observed in real time, the alignment accuracy of the lens and chip is maintained within a high range. Attached Figure Description

[0017] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed herein.

[0019] Figure 1 This is a schematic diagram of the overall structure of an endoscope assembly fixture provided in an embodiment of this application; Figure 2 for Figure 1 A top view of the structure of the embodiment; Figure 3 This is a structural diagram of the first active component; Figure 4 This is a structural diagram of the second active component; Figure 5 for Figure 4 A top view of the structure of the embodiment; Figure 6This is a structural diagram of the third active component; Figure 7 for Figure 6 A top view of the structure of the embodiment; Figure 8 A graphical representation of the test target; Figure 9 A graphic diagram of a test target specifically designed for lens inspection; Figure 10 A flowchart of an inspection method provided in an embodiment of this application; In the diagram: 1. Base plate; 2. Light source; 31. First displacement slide; 32. First positioning plate; 33. Mounting plate; 34. Slide rail; 35. Slider; 36. Locking knob; 4. Gripper mechanism; 41. Connecting plate; 42. Gripper; 43. Drive unit; 51. Second displacement slide; 52. Second positioning plate; 53. Rotation mechanism; 6. Guide fixture; 61. Air tube interface; 71. First adjustment unit; 72. Second adjustment unit; 8. Test target.

[0020] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the overall structure of an endoscope assembly fixture provided in an embodiment of this application; Figure 2 for Figure 1 A structural schematic diagram from another perspective of the embodiment; Figure 3 This is a structural diagram of the first active component; Figure 4 This is a structural diagram of the second active component; Figure 5 for Figure 4 A structural schematic diagram from another perspective of the embodiment; Figure 6 This is a structural diagram of the third active component; Figure 7 for Figure 6 A structural schematic diagram from another perspective of the embodiment; Figure 8 A graphical representation of the test target; Figure 9 A graphic diagram of a test target specifically designed for lens inspection; Figure 10 This is a flowchart of an inspection method provided in an embodiment of this application.

[0027] refer to Figures 1-9 It should be understood that Figure 2 The connections between the various components should be like Figure 1 As compact as in the middle, this is only for illustrative purposes and will Figure 1 Middle components according to Figure 2For ease of understanding, this application provides an endoscope assembly fixture for assembling the lens and chip of a high-resolution endoscope. The lens and chip are electrically connected. The endoscope assembly fixture may include: a base plate 1, a light source 2, a first movable component, a gripper mechanism 4, a second movable component, a conductive fixture 6, a third movable component, and a test target 8. The light source 2 is movably disposed on one side of the base plate 1 with a gap between them. The first movable component connects the light source 2 and the base plate 1 and drives the light source 2 to move in multiple directions. The gripper mechanism 4 is movably disposed between the light source 2 and the base plate 1 and grips the lens. The second movable component connects the gripper mechanism 4 and the base plate 1 and drives the gripper mechanism 4 to move and rotate in multiple directions. The conductive fixture 6 is movably disposed between the light source 2 and the base plate 1 and is electrically connected to the chip for external imaging. The third movable component connects the conductive fixture 6 and the base plate 1 and drives the conductive fixture 6 to move in multiple directions. The test target 8 is disposed on the side of the light source 2 facing the base plate 1.

[0028] This application provides an endoscope assembly fixture. A lens is held by a gripper mechanism 4, and a chip is placed on a conductive fixture 6, which is connected to an external display device for external imaging. This allows for real-time image observation. The positions of the test target 8, chip, and lens are adjusted via a first, second, and third movable component, ensuring that the center of the test target 8, the center of the chip's photosensitive area, and the center of the lens's effective area coincide in the third direction. At this point, the chip and test target 8 are located on opposite sides of the lens. The lens angle is then fine-tuned via the second movable component, and the positions of the test target 8 and chip in the third direction are adjusted via the first and third movable components to achieve the clearest image. The chip's position is recorded at this point. The chip's position is then adjusted by the third movable component, moving it away from the lens. Adhesive is applied to the chip's edge area, and the chip is moved back to the recorded position. UV light is used to pre-cure the adhesive between the chip and lens, followed by heat curing of the lens and chip. This completes the assembly of the lens and chip. Because the image effect can be observed in real time, the alignment accuracy of the lens and chip can be maintained within a high range.

[0029] It should be noted that, as Figure 1 and Figure 2 As shown, the first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction. In actual use, the third direction can be the same as the direction of gravity. In this way, the first direction and the second direction can be mutually perpendicular horizontal directions. For ease of explanation, the third direction will be used as the reference for the direction of gravity in the following explanations. From this, the concepts of up, down, high, low, etc. can be derived.

[0030] When heating and curing the lens and chip, the lens and chip can be removed from the endoscope assembly fixture and heated and cured using other heating equipment.

[0031] It should be understood that when the center of the test target 8, the center of the photosensitive area of ​​the chip, and the center of the effective area of ​​the lens coincide in the third direction, the light source 2 is located at the top, the lens is located in the middle, and the chip is located below the lens; wherein, the gripper mechanism 4 clamps the lens from the outer periphery and will not cause interference to the upper and lower sides of the lens.

[0032] Among them, the light source 2 adopts a three-in-one light source, which is compatible with infrared and visible light bands; in addition, the conductive fixture 6 is equipped with a PCB board and probes that are connected to the PCB board. In this way, the chip can be connected to the PCB board through the probes, and then connected to an external display device through components such as the signal box and connecting wires to image the lens, so that the image can be observed in real time. There are many such external imaging structures, which will not be described in detail here.

[0033] like Figure 7 As shown, the conductive fixture 6 has an airflow hole and an air tube interface 61 connected to the airflow hole to connect to an external negative pressure device. This allows the chip to be adsorbed onto the conductive fixture 6, preventing the chip from sliding and ensuring the stability of the connection between the chip and the conductive fixture 6.

[0034] Additionally, it should be noted that after the center of the test target 8, the center of the photosensitive area of ​​the chip, and the center of the effective area of ​​the lens coincide in the third direction, it is usually necessary to adjust the position of the test target 8 in the third direction so that the test target 8 is about 10mm away from the lens surface. Then, fine-tune the angle of the lens and adjust the distance between the chip and the lens to make the image as clear as possible.

[0035] It should be noted that the angle of the lens is fine-tuned to ensure that the MTF value is the same around the image. Generally, the MTF of the central area of ​​the image is required to be greater than 0.5, and the MTF of the edge area is required to be greater than 0.2, so as to ensure that the image is not tilted. There are many traditional solutions with similar lens and chip mounting principles, which will not be elaborated here.

[0036] Generally, the distance between the chip and the lens is usually between 0.15 and 0.25 mm to ensure sufficient space for adhesive, which facilitates the subsequent application of adhesive on the chip. This also prevents interference between the lens and the chip when the lens rotates. UV thermosetting adhesive can be used.

[0037] In addition, such as Figure 8 As shown, quadrilateral blocks can be set on the test target 8 to facilitate the calculation of MTF values ​​at different positions, thereby determining the endoscope imaging status. There are many traditional methods, which will not be elaborated here.

[0038] refer to Figure 1 In a preferred embodiment, the first movable component, the second movable component, and the third movable component are spaced apart in a first direction, which is parallel to the base plate 1; in the third direction, the conductive fixture 6, the gripper mechanism 4, and the light source 2 are spaced apart in a direction away from the base plate 1.

[0039] It should be understood that, as Figure 1 As shown, the first movable component, the second movable component, and the third movable component are spaced apart in the first direction, which ensures that the overall structure of the endoscope assembly fixture is compact. In the third direction, the guide fixture 6, the gripper mechanism 4, and the light source 2 are spaced apart in the direction away from the base plate 1, so as to facilitate the adjustment of the vertical position of the test target 8, the lens, and the chip, making it more convenient to use.

[0040] Of course, the first and second active components can also be distributed around the third active component. As long as it can be ensured that the positions of the test target 8, the lens and the chip can be adjusted so that the center of the test target 8, the center of the photosensitive area of ​​the chip and the center of the effective area of ​​the lens coincide in the third direction, the specific arrangement of the first, second and third active components is not limited.

[0041] refer to Figure 1 and Figure 3 In an exemplary embodiment, the first movable component may include: a first displacement slide 31, a first positioning plate 32, a sliding adjustment mechanism, and a mounting plate 33. The first displacement slide 31 is connected to the base plate 1 and has degrees of freedom to slide along a first direction and a second direction, respectively. The first direction and the second direction are perpendicular to each other and both are parallel to the base plate 1. The first positioning plate 32 is vertically disposed on the side of the first displacement slide 31 away from the base plate 1. The sliding adjustment mechanism is disposed on one side of the first positioning plate 32 and has degrees of freedom to slide along a third direction, which is the same as the thickness direction of the base plate 1. The mounting plate 33 connects the sliding adjustment mechanism and the light source 2. The mounting plate 33 is opposite to the base plate 1 in the third direction, and the light source 2 is disposed on the side of the mounting plate 33 facing the base plate 1.

[0042] Specifically, the first displacement slide 31 can be a high-precision manual displacement slide along the XY axis, so that the first displacement slide 31 can slide along the first direction and the second direction. The first positioning plate 32 is fixed above the first displacement slide 31, so that the first positioning plate 32 can slide freely along the first direction and the second direction.

[0043] The first displacement slide 31 has a movement range of 0 to 20 mm in the first direction and the second direction.

[0044] Based on this, combined Figure 1 and Figure 3The sliding adjustment mechanism can be set on the opposite side of the first positioning plate 32 in the first direction. The sliding adjustment mechanism has the freedom to slide in the third direction. Thus, the mounting plate 33 connected to the sliding adjustment mechanism has the freedom to slide in the first direction, the second direction and the third direction. The light source 2 and the test target 8 are both fixed relative to the mounting plate 33. Thus, the position of the test target 8 can be freely adjusted in multiple directions.

[0045] refer to Figure 3 In an exemplary embodiment, the sliding adjustment mechanism may include: a slide rail 34, a slider 35, and a locking knob 36. The slide rail 34 is fixed on the first positioning plate 32 and extends along a third direction. The slider 35 slides in cooperation with the slide rail 34. The locking knob 36 connects the slider 35 and the slide rail 34 to lock or release the sliding freedom of the slider 35. The mounting plate 33 is fixed to the slider 35.

[0046] Specifically, tightening the locking knob 36 locks the sliding freedom of the slider 35, and loosening the locking knob 36 releases the sliding freedom of the slider 35. This allows the slider 35 to slide up and down, further controlling the height of the test target 8.

[0047] It should be understood that the locking knob 36 can pass through the slider 35 and be threadedly connected to the slider 35. At the same time, the locking knob 36 abuts against the slide rail 34. When the locking knob 36 is tightened, the locking knob 36 abuts against the slide rail 34, locking the sliding freedom of the slider 35. When the locking knob 36 is loosened, the locking knob 36 moves away from the slide rail 34, releasing the sliding freedom of the slider 35.

[0048] It should be understood that there are many related structures for locking the knob 36 to lock or release the sliding degree of freedom of the slider 35, and this is only one optional embodiment.

[0049] The slider 35 has a travel of 400mm, and the adjustable distance between the test target 8 and the lens is 0~200mm, which can meet the endoscope's maximum depth of field of 200mm. In other words, the height of the lens is located at the middle position of the slider 35's travel.

[0050] refer to Figure 4 and Figure 5In an exemplary embodiment, the second active component may include: a second displacement slide 51, a second positioning plate 52, and a rotation mechanism 53. The second displacement slide 51 is connected to the base plate 1 and has degrees of freedom to slide along a first direction and a second direction. The first direction and the second direction are perpendicular to each other and both are parallel to the base plate 1. The second positioning plate 52 is vertically disposed on the side of the second displacement slide 51 away from the base plate 1. The rotation mechanism 53 is disposed on one side of the second positioning plate 52 and has degrees of freedom to rotate around the first direction, the second direction, and a third direction, respectively. The third direction is the same as the thickness direction of the base plate 1. The gripper mechanism 4 is disposed on the rotation mechanism 53, and the center of the lens coincides with the rotation center of the rotation mechanism 53 rotating around the three directions.

[0051] It should be noted that the second displacement slide 51 is similar to the first displacement slide 31, and will not be described in detail here. The rotating mechanism 53 is located on the side of the second positioning plate 52 away from the first positioning plate 32.

[0052] The fact that the center of the lens coincides with the rotation center of the rotating mechanism 53 in three directions means that the rotating mechanism 53 can control the lens to rotate around the center position of the lens.

[0053] Specifically, such as Figure 4 As shown, the rotating mechanism 53 is divided into three interconnected rotating platforms from left to right: the Y-axis rotating platform, the Z-axis rotating platform, and the X-axis rotating platform. These platforms can control the lens held by the gripper mechanism 4 to rotate around the second direction, the third direction, and the first direction, respectively. The three rotating platforms can be stacked and connected in the first direction.

[0054] In this embodiment, the three rotating platforms are model GCM-1101M (X-axis rotation), GCM-G65M76L (Z-axis rotation), and GCM-G65M100L (Y-axis rotation).

[0055] It should be noted that, as Figure 4 and Figure 5 As shown, R1 represents the rotation radius of the Z-axis rotating platform, H1 represents the distance between the lens and the X-axis rotating platform in the first direction, H2 represents the thickness of the X-axis rotating platform, and H4 represents the distance between the center of the rotation area edge of the Z-axis rotating platform and the X-axis rotating platform. Ensuring that the value of R1 is equal to the sum of H1, H2, and H4 ensures that when the Z-axis rotating platform rotates, the lens will rotate around the Z-axis at its center.

[0056] Furthermore, R2 represents the rotation radius of the Y-axis rotating platform, and H5 represents the distance between the center of the rotation area edge of the Y-axis rotating platform and the Z-axis rotating platform. Ensuring that the value of R2 is equal to the sum of H5, H3, H2, and H1 ensures that when the Y-axis rotating platform rotates, the lens will rotate around its own center Y-axis; for the X-axis rotating platform, it is sufficient to ensure that the rotation center and the lens center are coaxial in the first direction.

[0057] refer to Figure 5 In an exemplary embodiment, the gripper mechanism 4 may include: a connecting plate 41, two grippers 42, and a drive unit 43. The connecting plate 41 is connected to the rotation mechanism 53. The two grippers 42 are disposed opposite to each other on the connecting plate 41 in a direction parallel to the base plate 1. The opposite direction of the two grippers 42 is the relative direction. The grippers 42 have the degree of freedom to slide along the relative direction to grip the lens. The drive unit 43 connects the two grippers 42 and the connecting plate 41, and the drive unit 43 provides a sliding driving force for the two grippers 42.

[0058] Specifically, the drive unit 43 drives the two grippers 42 to move closer together to clamp the lens. The drive unit 43 can be a threaded rod and is threadedly connected to the sliding structure. The rotation of the threaded rod drives the sliding structure to move in the groove, so that the sliding structure drives the grippers 42 to move synchronously for clamping. There are many similar drive structures, and no limitation is made here. Other types of drive structures can also be used to drive the two grippers 42 to move closer together for clamping.

[0059] Furthermore, such as Figure 5 As shown, the contact area between the gripper 42 and the lens is provided with an arc-shaped groove, so that the groove fits the outer periphery of the lens, making it easier for the gripper 42 to hold the lens.

[0060] In a preferred embodiment, there are two drive units 43, each connected to one of the two grippers 42.

[0061] In this way, both grippers 42 can move independently, making them more maneuverable. For example, if the lens is defective and needs to be replaced, you only need to move one gripper 42 while keeping the other gripper 42 in the same position. After replacing the lens, move the gripper 42 that was moved last time to clamp the lens so that its position does not change. There is no need to repeatedly adjust the lens position, making it more convenient to use.

[0062] refer to Figure 6 and Figure 7In an exemplary embodiment, the third active component may include: a first adjustment part 71 and a second adjustment part 72. The first adjustment part 71 is connected to the base plate 1 and has a degree of freedom to slide along a first direction, which is parallel to the base plate 1. The second adjustment part 72 is disposed on the side of the first adjustment part 71 opposite to the first adjustment part 71 and has a degree of freedom to slide along a third direction, which is the same as the thickness direction of the base plate 1.

[0063] Specifically, the first adjustment part 71 can be a sliding structure that cooperates with the slide rail and the slider, such as the sliding adjustment mechanism mentioned above or other structures, which can adjust the position in the first direction, and will not be described in detail here; similarly, the second adjustment part 72 can adopt the sliding adjustment mechanism mentioned above or other structures, which can realize the position adjustment in the third direction, and will not be described in detail here.

[0064] In this embodiment, the height adjustment range of the second adjustment part 72 is 0 to 10 mm, and the adjustment range of the first adjustment part 71 in the first direction is 0 to 40 mm.

[0065] refer to Figure 9 and Figure 10 Based on the above embodiments, this application also provides an inspection method applied to the above-mentioned endoscope assembly fixture. The inspection method may specifically include the following steps: S100. Replace the test target 8 with a lens inspection-specific test target, which is equipped with wire pairs. S200. Adjust the positions of the lens inspection test target, lens and chip by means of the first movable component, the second movable component and the third movable component until the center of the lens inspection test target, the center of the effective area of ​​the lens and the center of the photosensitive area of ​​the chip are coaxial in the third direction, and the third direction is the same as the thickness direction of the base plate 1. S300, Adjust the position of the lens inspection test target in the third direction using the first active component until the distance between the lens inspection test target and the lens in the third direction is the preset distance; S400: Adjust the lens angle and the chip's position in the third direction using the second and third movable components respectively, until the external image is clearest; S500: Observe whether the line pairs are visible. If they are visible, the lens is qualified and can be assembled normally. If they are not visible, the lens is unqualified and should be replaced with a new lens.

[0066] In step S100, a pair of wires is set on the lens inspection test target, such as... Figure 9 As shown, five sets of line pairs can be set, with one set of line pairs located in the central area and the other four sets of line pairs distributed around it.

[0067] The adjustment process in steps S200 to S400 is the same as the adjustment process during endoscope assembly described above, and will not be repeated here.

[0068] In step S500, if the thread pair can be clearly seen, the lens is a qualified product and can continue with subsequent assembly work; if the thread pair cannot be clearly seen, it indicates that the lens itself is defective and needs to be replaced with a new lens.

[0069] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An endoscope assembly fixture, characterized in that, Lens and chip assembly for high-resolution endoscopes, the endoscope assembly fixture includes: Base plate; A light source is movably disposed on one side of the base plate and has a gap between it and the base plate; The first active component is used to connect the light source to the base plate and drive the light source to move in multiple directions; A gripper mechanism is movably disposed between the light source and the base plate, and the gripper mechanism holds the lens; The second active component is used to connect the gripper mechanism to the base plate and drive the gripper mechanism to move and rotate in multiple directions. A conductive fixture is movably disposed between the light source and the base plate, and the conductive fixture is electrically connected to the chip for external imaging; The third active component is used to connect the conductive fixture to the base plate and drive the conductive fixture to move in multiple directions; The test target is positioned on the side of the light source facing the base plate.

2. The endoscope assembly fixture as described in claim 1, characterized in that, The first active component includes: A first displacement slide is connected to the base plate. The first displacement slide has degrees of freedom to slide along a first direction and a second direction respectively. The first direction and the second direction are perpendicular to each other and both are parallel to the base plate. The first positioning plate is vertically disposed on the side of the first displacement slide away from the base plate; A sliding adjustment mechanism is disposed on one side of the first positioning plate and has a degree of freedom to slide along a third direction, which is the same as the thickness direction of the base plate; A mounting plate connects the sliding adjustment mechanism and the light source. The mounting plate is opposite to the base plate in the third direction, and the light source is located on the side of the mounting plate facing the base plate.

3. The endoscope assembly fixture as described in claim 2, characterized in that, The sliding adjustment mechanism includes: A slide rail is fixed to the first positioning plate and extends along a third direction; The slider slides in conjunction with the slide rail. A locking knob connects the slider to the slide rail to lock or release the slider's degree of freedom of movement; The mounting plate is fixed to the slider.

4. The endoscope assembly fixture as described in claim 1, characterized in that, The second active component includes: The second displacement slide is connected to the base plate. The second displacement slide has the degree of freedom to slide along a first direction and a second direction. The first direction and the second direction are perpendicular to each other and both are parallel to the base plate. The second positioning plate is vertically disposed on the side of the second displacement slide away from the base plate; A rotating mechanism is disposed on one side of the second positioning plate. The rotating mechanism has degrees of freedom to rotate about the first direction, the second direction and a third direction respectively. The third direction is the same as the thickness direction of the base plate. The gripper mechanism is mounted on the rotating mechanism, and the center of the lens coincides with the rotation center of the rotating mechanism which rotates in three directions.

5. The endoscope assembly fixture as described in claim 4, characterized in that, The gripper mechanism includes: A connecting plate is connected to the rotating mechanism; Two grippers are disposed opposite to each other on the connecting plate in a direction parallel to the base plate. The two grippers are in a relative direction and have the freedom to slide along the relative direction to hold the lens. The drive unit connects the two grippers to the connecting plate, and the drive unit provides sliding driving force to the two grippers.

6. The endoscope assembly fixture as described in claim 5, characterized in that, The drive unit has two parts, each connected to one of the two grippers.

7. The endoscope assembly fixture as described in claim 5, characterized in that, The contact area between the gripper and the lens is provided with an arc-shaped groove.

8. The endoscope assembly fixture as described in claim 1, characterized in that, The third active component includes: A first adjustment part is connected to the base plate, and the first adjustment part has a degree of freedom to slide along a first direction, which is parallel to the base plate; The second adjustment part is disposed on the side of the first adjustment part away from the second adjustment part and has a degree of freedom to slide along a third direction, which is the same as the thickness direction of the base plate.

9. The endoscope assembly fixture as described in claim 1, characterized in that, The first movable component, the second movable component, and the third movable component are spaced apart in a first direction, which is parallel to the base plate. In the third direction, the guiding fixture, the gripper mechanism, and the light source are spaced apart in a direction away from the base plate, and the third direction is the same as the thickness direction of the base plate.

10. A testing method, characterized in that, The inspection method, applied to the endoscope assembly fixture according to any one of claims 1 to 9, comprises: Replace the test target with a lens inspection-specific test target, which is equipped with wire pairs. The positions of the lens inspection test target, lens, and chip are adjusted by the first movable component, the second movable component, and the third movable component until the center of the lens inspection test target, the center of the effective area of ​​the lens, and the center of the photosensitive area of ​​the chip are coaxial in a third direction, which is the same as the thickness direction of the base plate. The position of the lens inspection test target in the third direction is adjusted by the first active component until the distance between the lens inspection test target and the lens in the third direction is a preset distance; The angle of the lens and the position of the chip in the third direction are adjusted by the second and third active components respectively, until the external image is clearest; Observe whether the line pairs can be seen clearly. If they can be seen clearly, the lens is qualified and can be assembled normally. If they cannot be seen clearly, the lens is unqualified and should be replaced with a new lens.

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