Endoscopic testing fixtures, testing systems and testing methods

Abstract

This invention discloses an endoscopic testing fixture, testing system, and testing method, comprising: a base; a first receiving component for receiving a reflective target, the first receiving component being connected to the base and facing the imaging end of the endoscope; and a second receiving component for receiving a transmissive target, the second receiving component being connected to the base and facing the imaging end of the endoscope; the second receiving component includes a light source connected to the base and a first clamping component connected to the light source, the light source having a light-transmitting surface, the first clamping component forming a clamping space for securing the transmissive target, the clamping space corresponding to the light-transmitting area of ​​the light-transmitting surface, the first clamping component being movable relative to the light source and adjusting the clamping space; the first receiving component is located between the second receiving component and the endoscope, and the first receiving component is at least partially detachable from the base to conduct the light path between the endoscope and the transmissive target. This invention has high detection efficiency, good versatility, and can use transmissive targets of different sizes.

Description

Technical Field

[0001] This invention relates to the field of endoscope optical performance testing, and particularly to an endoscope testing fixture, testing system and testing method. Background Technology

[0002] With the rapid development of medical technology, medical endoscopes can flexibly enter various cavities of the human body to display high-definition images of the internal organs, and are therefore widely used in clinical practice. The optical performance of endoscopes has a crucial impact on patient diagnostic safety. To address this issue, endoscopes require a testing system for routine maintenance, testing and reception of their optical performance, and fault diagnosis.

[0003] In existing technologies, endoscopes primarily test optical performance by imaging reflective and / or transmissive targets. Because reflective and transmissive targets are completely different in size, structure, and operating principle, the test fixtures of testing systems typically can only accommodate one type of target. However, each type of target has its own advantages and disadvantages for different test items, leading to a decrease in testing efficiency regardless of the type of target used.

[0004] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide an endoscopic testing fixture, testing system and testing method, so as to flexibly select different types of targets.

[0006] The objective of this invention is achieved through the following technical solution: an endoscopic testing fixture, comprising: a base; a first receiving component for receiving a reflective target for endoscopic imaging, the first receiving component being connected to the base and facing the imaging end of the endoscope; and a second receiving component for receiving a transmissive target for endoscopic imaging, the second receiving component being connected to the base and facing the imaging end of the endoscope; the second receiving component includes a light source connected to the base and a first clamping component connected to the light source, the light source having a light-transmitting surface, the first clamping component forming a clamping space for securing the transmissive target, the clamping space corresponding to the light-transmitting area of ​​the light-transmitting surface, the first clamping component being movable relative to the light source and adjusting the clamping space; wherein, the first receiving component is located between the second receiving component and the endoscope, and the first receiving component is at least partially detachable from the base to conduct the light path between the endoscope and the transmissive target.

[0007] Furthermore, the first receiving component includes: a bracket connected to the base; a first mounting plate detachably connected to the bracket, wherein the reflective target is mounted on the first mounting plate; wherein the bracket has a first clearance hole for guiding the optical path, and the first clearance hole corresponds to the first mounting plate.

[0008] Furthermore, the first mounting plate and the bracket are detachably connected by one or more of the following methods: plug-in connection, magnetic attraction, snap-fit ​​connection, and threaded connection.

[0009] Furthermore, the first mounting plate is connected to the reflective target via magnetic attraction.

[0010] Furthermore, the first clamping assembly includes: two first clamping members, which are disposed opposite to each other on both sides of the light-transmitting surface, and the two first clamping members are movably connected to the light source in a way that allows them to move towards or away from each other; and at least two elastic members, which are respectively connected to the two first clamping members in a transmission manner; wherein, the clamping space is formed between the two first clamping members, and the elastic members provide a force that drives the two first clamping members to move towards each other.

[0011] Further, the first clamping assembly includes: a rotating ring rotatably connected to the light-transmitting surface, the rotating ring including a second clearance hole that avoids the light-transmitting area of ​​the light-transmitting surface; multiple second clamping members movably connected to the periphery of the light-transmitting surface; and a rotation drive structure, pulsatorically connected to the rotating ring and used to drive the rotating ring to rotate. The clamping space is formed between the multiple second clamping members, and the rotating ring can rotate and push the multiple second clamping members to retract or expand.

[0012] Furthermore, the outer edge of the rotating ring is provided with a ring of teeth, and the rotation drive structure includes a worm gear rotatably connected to the light source and a handle fixed to the end of the worm gear, the worm gear meshing with the rotating ring.

[0013] Furthermore, the light source has a groove recessed inward from the light-transmitting surface in the rotating ring area. The groove corresponds to the second clamping member. The rotating ring has an arc-shaped hole at the position corresponding to the groove. The second clamping member is placed in the groove and the arc-shaped hole. The rotating ring can drive the arc-shaped hole to rotate and push the second clamping member to move along the groove.

[0014] Furthermore, the present invention also provides a testing system, comprising: the aforementioned endoscope testing fixture; a substrate; a first moving mechanism, including a rotary table mounted on the substrate and a first translation component mounted on the rotary table; a first fine-tuning component connected between the first translation component and the base, and capable of adjusting the position of the base along the translation direction of the first translation component; a second clamping component for clamping the endoscope; and a second moving mechanism, including a second translation component mounted on the substrate and pulsatorically connected to the second clamping component; wherein the rotary table can drive the first translation component to rotate in a vertical direction, the first translation component can drive the base to translate in a horizontal direction, and the second translation component can drive the second clamping component to translate in a horizontal direction.

[0015] Furthermore, the second clamping assembly includes: a third clamping member for clamping the gripping portion of the endoscope; and a fourth clamping member for clamping the insertion portion of the endoscope; wherein the fourth clamping member includes a second fine-tuning assembly adapted to adjust the position of the insertion portion in the vertical direction.

[0016] Furthermore, the present invention also provides a testing method, comprising the following steps:

[0017] S1: Mount the endoscope onto the second clamping assembly and level it;

[0018] S2: Select a reflective or transmissive target according to the test item, adjust the first translation component to the initial state, and adjust the selected target to the zero mark position of the first translation component;

[0019] S3: Adjust the rotary table to the initial state at the zero mark position. When the rotary table is in the initial state, the translation directions of the first translation component and the second translation component are the same. Adjust the rotary table to the corresponding angle according to the tilt angle of the endoscope's imaging end so that the endoscope's imaging end is facing the selected target. Drive the second translation component to move the endoscope toward the target and make the endoscope's imaging end abut against the center of the selected target.

[0020] S4: Drive the first translation component, and the target gradually moves away from the imaging end to perform optical performance testing on the endoscope.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The test fixture of the present invention has a first receiving component for accommodating a reflective target and a second receiving component for accommodating a transmissive target respectively set on the base. The first receiving component is located between the second receiving component and the endoscope, and the first receiving component is at least partially detachable from the base to conduct the optical path between the endoscope and the transmissive target. When a reflective target is required, the imaging end of the endoscope can directly illuminate the reflective target on the first receiving component. When a transmissive target is required, only the first receiving component needs to be detached, and the imaging end of the endoscope can directly illuminate the reflective target. It can illuminate the transmissive target on the second receiving component, so that during the test, the tester can flexibly choose either a reflective target or a transmissive target. The endoscope optical performance testing is efficient and versatile, saving the time, manpower and cost of installation, fixing and debugging of different test fixtures when using reflective targets and transmissive targets at the same time. In addition, by setting a first clamping component on the light source of the second receiving component for clamping the transmissive target, the first clamping component can move relative to the light source and adjust the clamping space, thereby accommodating transmissive targets of different sizes and improving the adaptability of the test fixture. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the endoscopic testing fixture of the present invention.

[0023] Figure 2 This is an exploded structural diagram of the first accommodating component in this invention.

[0024] Figure 3 This is a schematic diagram of the structure of the second accommodating component in this invention.

[0025] Figure 4 yes Figure 3 A top view of the second housing component.

[0026] Figure 5 This is a schematic diagram of the structure of the light source in this invention.

[0027] Figure 6 This is a schematic diagram of another embodiment of the second receiving component of the present invention.

[0028] Figure 7 yes Figure 6 Exploded view of the second housing component.

[0029] Figure 8 This is a schematic diagram of the test system of the present invention.

[0030] Figure 9 yes Figure 8 A schematic diagram of the structure after removing the test fixture.

[0031] Figure 10This is a schematic diagram of the structure of the third clamping member in this invention.

[0032] Figure 11 This is a schematic diagram of the structure of the fourth clamping member in this invention.

[0033] In the picture:

[0034] 110. Base; 120. First receiving assembly; 121. Bracket; 122. First mounting plate; 123. First clearance hole; 130. Second receiving assembly; 131. Light source; 1311. Light-transmitting surface; 1312. Guide groove; 1313. Slide groove; 132. First clamping assembly; 133. First clamping member; 1331. Slot; 1332. First rolling member; 134. Elastic member; 135. Mounting device Housing; 136, Rotary ring; 1361, Second clearance hole; 1362, Arc-shaped hole; 137, Second clamping member; 1371, First abutment part; 1372, Second abutment part; 138, Rotary drive structure; 1381, Worm gear; 1382, Rotary handle; 200, Endoscope; 210, Grip part; 220, Insertion part; 300, Substrate; 400, First moving mechanism; 410, Rotary stage; 411. 412. Chassis; 413. Turntable; 420. First actuator; 421. First translation assembly; 422. Frame; 423. Lead screw assembly; 424. Second actuator; 500. Second moving mechanism; 510. Second translation assembly; 520. Second mounting plate; 600. Second clamping assembly; 610. Third clamping member; 611. First clamping seat; 6111. First clamping slot; 612. First clamping block; 612 1. Second clamping groove; 613. Locking element; 614. First clamping hole; 615. Guide rod; 620. Fourth clamping element; 621. Second clamping seat; 622. Second clamping block; 623. Third clamping block; 624. Second clamping hole; 625. Second fine-tuning assembly; 6251. Slide rail; 6252. Slider; 6253. Locking element; 700. First fine-tuning assembly; 810. Rotating groove; 820. Mounting base. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0036] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] Please see Figure 1 and Figure 8 As shown, an endoscope testing fixture corresponding to a preferred embodiment of the present invention includes: a base 110; a first receiving component 120 for receiving a reflective target (not shown) for imaging by an endoscope 200, the first receiving component 120 being connected to the base 110 and facing the imaging end of the endoscope 200; and a second receiving component 130 for receiving a transmissive target (not shown) for imaging by the endoscope 200, the second receiving component 130 being connected to the base 110 and facing the imaging end of the endoscope 200; wherein, the first receiving component 120 is located between the second receiving component 130 and the endoscope 200, and the first receiving component 120 is at least partially detachable from the base 110 to conduct the optical path between the endoscope 200 and the transmissive target.

[0039] The test fixture of this invention comprises a first receiving component 120 for accommodating a reflective target and a second receiving component 130 for accommodating a transmissive target, respectively, on a base 110. The first receiving component 120 is located between the second receiving component 130 and the endoscope 200, and at least partially detachable from the base 110 to conduct the optical path between the endoscope 200 and the transmissive target. When a reflective target is required, the imaging end of the endoscope 200 can directly illuminate the reflective target on the first receiving component 120. When a transmissive target is required, only the first receiving component 120 needs to be detached, and the imaging end of the endoscope 200 can illuminate the transmissive target on the second receiving component 130. Thus, during the testing process, the tester can flexibly select either a reflective or transmissive target. The endoscope 200 has high efficiency and good versatility in optical performance testing, saving the installation, fixing, and debugging time, manpower, and cost associated with using different test fixtures when using both reflective and transmissive targets simultaneously.

[0040] Furthermore, referring to Figure 2 As shown, the first receiving component 120 includes a bracket 121 fixedly connected to the base 110 and a first mounting plate 122 detachably connected to the bracket 121. The bracket 121 has a first clearance hole 123 for guiding the optical path, and the first clearance hole 123 corresponds to the first mounting plate 122. The reflective target is mounted on the first mounting plate 122.

[0041] The first mounting plate 122 and the bracket 121 can be detachably connected via one or more of the following methods: plug-in, magnetic attraction, snap-fit, or threaded connection. This invention does not limit the connection. The invention achieves optical path communication between the second receiving component 130 and the endoscope 200 by detaching the first mounting plate 122. The reflective target can be detached or mounted on the bracket 121 along with the first mounting plate 122, offering greater flexibility in assembly and disassembly. The reflective target is opaque and printed with patterns for testing optical performance, such as checkerboard, distortion grid, 24-color reproduction blocks, or withered leaf patterns. Of course, in other embodiments, the bracket 121 can also be detachably connected to the base 110, thereby achieving optical path communication between the second receiving component 130 and the endoscope 200 by detaching the entire first receiving component 120.

[0042] Preferably, to accommodate reflective targets of different sizes, the first mounting plate 122 is connected to the reflective target via magnetic attraction. For example, the first mounting plate 122 is made of an iron-containing magnetically conductive material, and the side of the reflective target facing the first mounting plate 122 is provided with a magnetic structure. Furthermore, to stabilize the reflective target, the magnetic structure dimensions of reflective targets of different sizes are preferably consistent. A limiting groove (not shown) adapted to the magnetic structure can be formed on the first mounting plate 122, and the magnetic structure is embedded in the limiting groove to limit the deviation of the reflective target.

[0043] Furthermore, referring to Figures 3 to 5As shown, the second receiving assembly 130 includes a light source 131 connected to the base 110 and a first clamping assembly 132 connected to the light source 131. The light source 131 has a light-transmitting surface 1311 facing the endoscope 200, and light emitted from the light source 131 can be directed toward the light-transmitting surface 1311. The first clamping assembly 132 forms a clamping space for securing a transmissive target, and the clamping space corresponds to the light-transmitting area of ​​the light-transmitting surface 131, so that after the transmissive target is installed in the clamping space, the light-transmitting area of ​​the light source 131 corresponds to the transmissive target. The transmissive target is a transparent structure with patterns printed on it for testing optical performance, such as TV-line resolution test patterns, USAF1951 resolution line pairs, national standard resolution line pairs, s-SFR (Siemens star chart), e-SFR (low contrast edge spatial frequency response chart), grayscale patterns, and 3 dynamic range patterns. The light emitted by the light source 131 can shine onto the transmissive target through the light-transmitting area to illuminate the target.

[0044] Preferably, the first clamping assembly 132 is movable relative to the light source 131 and the clamping space is adjustable to accommodate transmissive targets of different sizes.

[0045] In one embodiment, the first clamping assembly 132 includes first clamping members 133 and elastic members 134. There are two first clamping members 133, which are disposed opposite each other on both sides of the light-transmitting surface 1311. Both first clamping members 133 are movably connected to the light source 131, allowing them to move towards or away from each other, forming a clamping space between them. There are at least two elastic members 134, which are respectively connected to the two first clamping members 133. The elastic members 134 provide a force to drive the two first clamping members 133 to move towards each other. When the transmissive target is placed in the clamping space, the two first clamping members 133 can secure the target under the action of the elastic members 134.

[0046] The first clamping member 133 is specifically a plate-like structure, which can extend from one side of the light source 131 to the other side in a vertical or horizontal direction, and this invention is not limited thereto. Preferably, the opposing surfaces of the two first clamping members 133 are provided with recessed slots 1331, which extend from one end to the other along the extending direction of the first clamping members 133. The transmissive target is inserted into the slots 1331 to improve the tightness of the connection between the transmissive target and the first clamping members 133. Preferably, the inner wall of the slot 1331 can be provided with a flexible structure to prevent scratching the target. Preferably, the entrance end of the slot 1331 can be chamfered to better guide the target into the slot 1331.

[0047] A slide rail structure (not shown) can be provided between the first clamping member 133 and the light source 131 to enable the first clamping member 133 to move relative to the light source 131; alternatively, a rolling structure can be provided between the first clamping member 133 and the light source 131. For example, the light-transmitting surface 1311 of the light source 131 is recessed with a guide groove 1312, which extends along the moving direction of the first clamping member 133. The first clamping member 133 has a rollable first rolling member 1332 on the side facing the light-transmitting surface 1311. The first rolling member 1332 is adapted to the guide groove 1312, and the first clamping member 133 can move along the guide groove 1312 under the rolling of the first rolling member 1332. The first rolling member 1332 can specifically be a ball or a roller.

[0048] Preferably, there are multiple slide rail structures or rolling structures, and they are spaced apart along the extension direction of the first clamping member 133 to reliably guide the movement of the first clamping member 133 and improve the tightness of the connection between the first clamping member 133 and the light source 131.

[0049] Furthermore, the first clamping assembly 132 also includes a mounting shell 135 fixedly connected to the light source 131. The mounting shell 135 corresponds one-to-one with the first clamping member 133. The elastic member 134 is specifically a spring, and the two elastic members 134 are respectively housed in different mounting shells 135. The two ends of the elastic member 134 abut against the mounting shell 135 and the first clamping member 133, respectively. Preferably, each mounting shell 135 is provided with a plurality of elastic members 134, and the plurality of elastic members 134 are arranged at intervals along the extending direction of the first clamping member 133.

[0050] Admittedly, in other embodiments, reference is made to Figure 6 and Figure 7 As shown, the first clamping assembly 132 includes a rotating ring 136, second clamping members 137, and a rotary drive structure 138. The rotating ring 136 is rotatably connected to the light-transmitting surface 1311, and includes a second clearance hole 1361 that avoids the light-transmitting area of ​​the light-transmitting surface 1311. There are multiple second clamping members 137, which are movably connected to the periphery of the light-transmitting surface 1311, forming a clamping space between the multiple second clamping members 137. The rotary drive structure 138 is drively connected to the rotating ring 136, and the rotating ring 136 is adapted to rotate under the drive of the rotary drive structure 138, pushing the multiple second clamping members 137 to simultaneously retract or expand, thereby securing or releasing the transmissive target.

[0051] Specifically, the light source 131 has a groove 1313 recessed inward from the light-transmitting surface 1311 in the area corresponding to the rotating ring 136. The groove 1313 corresponds one-to-one with the second clamping member 137. In this embodiment, since the transmissive target has a square structure, there are preferably four second clamping members 137, each corresponding to one of the four edges of the target. The groove 1313 is located on the two orthogonal center lines of the light-transmitting surface 1311, and the extension direction of the groove 1313 is consistent with the direction of the corresponding center line. The second clamping member 137 is slidably connected to the groove 1313 and extends at least partially out of the groove 1313 to form a first abutment portion 1371 for abutting the edge of the transmissive target. The portion of the first abutment portion 1371 corresponding to the edge is preferably a planar structure to reliably contact the edge. Preferably, a second supporting part 1372 is provided at the end of the first supporting part 1371. The second supporting part 1372 is perpendicular to the first supporting part 1371 and extends toward the center of the light-transmitting surface 1311. The end face of the transmissive target is limited between the second supporting part 1372 and the rotating ring 136.

[0052] A rotating ring 136 has an arc-shaped hole 1362 extending along its rotation axis at the position corresponding to the sliding groove 1313. The arc-shaped hole 1362 has an inner end near the inner edge of the rotating ring 136 and an outer end near the outer edge. In the direction from the inner end to the outer end, the arc-shaped hole 1362 is inclined towards the outer edge. The second clamping member 137 is placed in both the sliding groove 1313 and the arc-shaped hole 1362. The rotating ring 136 can drive the arc-shaped hole 1362 to rotate and push the second clamping member 137 to move along the sliding groove 1313. Preferably, in order to facilitate the smooth pushing of the second clamping member 137 by the arc-shaped hole 1362, the portion of the first abutment portion 1371 located in the arc-shaped hole 1362 is a cylindrical structure. When the rotating ring 136 rotates and drives the second clamping member 137 to move to the inner end of the arc-shaped hole 1362, the second clamping member 137 is in a fully retracted state. When the rotating ring 136 rotates and drives the second clamping member 137 to move to the outer end of the arc-shaped hole 1362, the second clamping member 137 is in a fully extended state.

[0053] The rotary drive structure 138 includes a worm gear 1381 rotatably connected to the light source 131. One end of the worm gear 1381 extends out of the light source 131 and is connected to a handle 1382. A ring 136 has a toothed outer edge. The worm gear 1381 meshes with the teeth of the ring 136. By rotating the handle 1382, the ring 136 can be rotated. Alternatively, the rotary drive structure 138 can also be a grip (not shown) directly fixedly connected to the ring 136, allowing the ring 136 to rotate by direct operation of the grip. In addition, a torsion spring or other elastic structure can be provided between the rotating ring 136 and the light source 131 to provide the rotating ring 136 with a force that drives the second clamping member 137 to be in a fully retracted state in its natural state. By rotating the gripping member to compress the elastic structure, the second clamping member 137 can be gradually unfolded, so that the target can be smoothly placed into the clamping space. When the rotational force on the gripping member is removed, the rotating ring 136 is reset under the rebound action of the elastic structure and drives the second clamping member 137 to clamp the target.

[0054] In one embodiment, the first abutment portion 1371 of the second clamping member 137 extends horizontally so that the clamping space formed by the second clamping member 137 can simultaneously clamp the transmissive target and the first mounting plate 122. In this case, there can be two second clamping members 137, arranged opposite each other; correspondingly, there can also be two arc-shaped holes 1362 and two sliding grooves 1313. The transmissive target and the first mounting plate 122 can then be sequentially placed into the clamping space formed by the two second clamping members 137 along the horizontal direction. Subsequently, the second clamping members 137 are adjusted by the rotation drive structure 138 to fix the transmissive target and the first mounting plate 122. In this case, the test fixture of the present invention can simultaneously test both transmissive and reflective targets, making operation simple and highly efficient.

[0055] Furthermore, referring to Figure 8 and Figure 9 As shown, the present invention also provides a testing system, including the aforementioned endoscope testing fixture, a substrate 300, a first moving mechanism 400, a second moving mechanism 500, and a second clamping assembly 600. The first moving mechanism 400 is mounted on the substrate 300 and is throttle-connected to the base 110. The first moving mechanism 400 can drive the base 110 to translate horizontally and rotate vertically. In this embodiment, the translation direction of the first moving mechanism 400 is perpendicular to the end face of the target. The second clamping assembly 600 is used to clamp the endoscope 200. The second moving mechanism 500 is mounted on the substrate 300 and throttle-connected to the second clamping assembly 600. The second moving mechanism 500 can drive the second clamping assembly 600 to translate horizontally, so that the endoscope 200 moves closer to or away from the testing fixture.

[0056] The first moving mechanism 400 includes a rotary table 410 and a first translation component 420 disposed on the rotary table 410. The rotary table 410 includes a chassis 411 fixed on a base plate 300, a turntable 412 rotatably connected to the chassis 411, and a first actuator 413 driveably connected to the turntable 412. The first actuator 413 can drive the turntable 412 to rotate. The first actuator 413 can be a grip structure that can be manually rotated; or, the first actuator 413 can also be a motor, thereby realizing the automatic operation of the rotary table 410.

[0057] The first translation component 420 is mounted on the rotary table 410 and includes a frame 421 fixedly connected to the turntable 412, a lead screw assembly 422 rotatably mounted on the frame 421, and a second actuator 423 connected to the lead screw assembly 422. The base 110 is drive-connected to the lead screw assembly 422, and the lead screw assembly 422 operates in response to the rotation of the second actuator 423 to drive the base 110 to translate. The second actuator 423 can also be a manual or electric structure, which will not be described in detail here.

[0058] The turntable 412 has an angle scale around its circumference, and the base 411 has a first indicator (not shown). Initially, the first indicator points to the zero mark position of the turntable 410. At this time, the translation direction of the first translation component 420 is consistent with the translation direction of the second moving mechanism 500.

[0059] The frame 421 has length markings along the translation direction of the first translation component 420, and the test fixture is provided with a second indicator (not shown), which is flush with the side of the target facing the endoscope 200. When the first translation component 420 has an initial state in which the base 110 is closest to the second moving mechanism 500, the second indicator points to the zero mark position, so that the target is at the zero mark position.

[0060] Since the reflective and transmissive targets have a positional difference in the translation direction of the first translation component 420, in order to ensure that both the reflective and transmissive targets are initially at the zero-scale position, the first receiving component 120 and the second receiving component 130 are each provided with a second indicator, which is aligned with the reflective and transmissive targets respectively. Furthermore, a first fine-tuning component 700 is provided between the first translation component 420 and the base 110. The first fine-tuning component 700 can adjust the position of the base 110 along the translation direction of the first translation component 420, thereby selectively positioning either the reflective or transmissive target at the zero-scale position. Specifically, the first fine-tuning component 700 can be a manual slide, which will not be described in detail here.

[0061] Preferably, in order to reduce the overall volume of the rotary table 410 while ensuring that the first translation component 420 reliably rotates synchronously with the rotary table 410, in this embodiment, the end of the first translation component 420 away from the second actuator 423 is connected to the rotary table 410, and a guide component is provided between the first translation component 420 and the substrate 300 to support and guide the rotation of the first translation component 420.

[0062] The guiding assembly includes a rotating groove 810 and a second rolling element (not shown) adapted to the rotating groove 810. The rotating groove 810 is recessed inward from the end face of the substrate 300, and is an arc-shaped groove, coaxially arranged with the rotary table 410. A mounting base 820 is provided on the side of the frame 421 facing the substrate 300. The second rolling element is movably mounted on the mounting base 820 and partially located in the rotating groove 810. The second rolling element is specifically a ball bearing capable of omnidirectional rotation to achieve a rolling connection between the frame 421 and the rotating groove 810. In this embodiment, there are multiple rotating grooves 810, which are spaced apart along the length of the frame 421. To improve the stability of the frame 421, multiple second rolling elements are provided in each rotating groove 810. When the rotary table 410 drives the first translation assembly 420 to rotate, the second rolling elements can move synchronously along the rotating groove 810.

[0063] The second moving mechanism 500 includes a second translation component 510 and a second mounting plate 520 pulsatorically connected to the second translation component 510. A second clamping component 600 is mounted on the second mounting plate 520. The second translation component 510 can drive the second mounting plate 520 to move horizontally. The structure of the second translation component 510 is similar to that of the first translation component 420, and will not be described in detail here.

[0064] The second clamping assembly 600 includes a third clamping member 610 and a fourth clamping member 620 disposed on the second mounting plate 520. The third clamping member 610 and the fourth clamping member 620 are arranged along the translation direction of the second translation assembly 510, and the fourth clamping member 620 is closer to the test fixture than the third clamping member 610. The third clamping member 610 is used to clamp the gripping part 210 of the endoscope 200, and the fourth clamping member 620 is used to clamp the insertion part 220 of the endoscope 200.

[0065] Reference Figures 9 to 11 As shown, the third clamping member 610 includes a first clamping seat 611, a first clamping block 612, and a locking member 613. The first clamping seat 611 is fixedly connected to the second mounting plate 520 and extends vertically. The first clamping block 612 is movably connected to the top of the first clamping seat 611, and the locking member 613 is located between the first clamping seat 611 and the first clamping block 612 to fasten the first clamping block 612 to the first clamping seat 611 or to release it.

[0066] The first clamping seat 611 has a first clamping groove 6111 recessed inward on the end face of the first clamping block 612. The first clamping groove 6111 is a through structure in the translation direction of the second translation component 510. The first clamping block 612 has a second clamping groove 6121 recessed inward on the end face of the first clamping seat 611. The second clamping groove 6121 is a through structure in the translation direction of the second translation component 510. The first clamping groove 6111 and the second clamping groove 6121 cooperate to form a first clamping hole 614 that is adapted to the periphery of the gripping part 210 to support and fasten the gripping part 210.

[0067] In one embodiment, a plurality of guide rods 615 are fixed vertically to the top of the first clamping seat 611. A first clamping block 612 is slidably sleeved on the guide rods 615. The first clamping block 612 can move vertically to the top of the first clamping seat 611 to cooperate with the first clamping seat 611 in clamping the gripping part 210, or move vertically away from the top of the first clamping seat 611 to release the gripping part 210. In another embodiment, the first clamping block 612 can also be hinged to the first clamping seat 611. The first clamping block 612 can be flipped to the top of the first clamping seat 611 to cooperate with the first clamping seat 611 in clamping the gripping part 210, or flipped away from the top of the first clamping seat 611 to release the gripping part 210.

[0068] The locking element 613 can specifically adopt a latch or snap-on structure to provide a force that pushes the first clamping block 612 against the first clamping seat 611 when locking. Alternatively, the locking element 613 can also be a threaded component such as a screw or bolt. By screwing the threaded component between the first clamping block 612 and the first clamping seat 611, the fastening between the first clamping block 612 and the first clamping seat 611 can be achieved, or the threaded component can be unscrewed from the first clamping block 612 and the first clamping seat 611 to loosen them.

[0069] The fourth clamping member 620 includes a second clamping seat 621, a second clamping block 622, and a third clamping block 623. The second clamping seat 621 is fixedly connected to the second mounting plate 520 and extends vertically. The second clamping block 622 is mounted on the second clamping seat 621. The third clamping block 623 is movably connected to the top end of the second clamping block 622. A second clamping hole 624 adapted to the periphery of the insertion portion 220 is formed between the second clamping block 622 and the third clamping block 623. The structure of the second clamping hole 624 is similar to the structure of the first clamping hole 614. The connection structure between the second clamping block 622 and the third clamping block 623 can be referred to as the connection structure between the first clamping seat 611 and the first clamping block 612, which will not be described in detail here.

[0070] Preferably, since part of the insertion portion 220 is a flexible structure, in order to ensure that the insertion portion 220 is in a horizontal state, a second fine-tuning component 625 is provided between the second clamping seat 621 and the second clamping block 622, which can drive the second clamping block 622 to move vertically relative to the second clamping seat 621. The second fine-tuning component 625 includes a slide rail 6251 fixed vertically on the second clamping seat 621, a slider 6252 fixedly connected to the second clamping block 622 and slidably disposed on the slide rail 6251, and a locking member 6253 threadedly connected to the slider 6252. The locking member 6253 can abut against the slide rail 6251 to restrict the slider 6252 from moving along the slide rail 6251. Preferably, a level (not shown) can be provided on the third clamping block 623 to accurately detect whether the insertion portion 220 is in a horizontal state.

[0071] Furthermore, the present invention also provides a testing method, comprising the following steps:

[0072] S1: Install the endoscope 200 on the second clamping assembly 600 and adjust it to be horizontal. During this process, the gripping part 210 of the endoscope 200 is clamped on the third clamping member 610, and the insertion part 220 of the endoscope 200 is clamped on the fourth clamping member 620. Adjust the second fine-tuning assembly 625 to adjust the position of the fourth clamping member 620 in the vertical direction, so that the insertion part 220 is kept in a horizontal state.

[0073] S2: Select a reflective or transmissive target according to the test item, adjust the first translation component 420 to its initial state, and adjust the selected target to the zero-scale position of the first translation component 420. Specifically, by adjusting the first fine-tuning component 700, the base 110 can move relative to the first translation component 420 along the translation direction of the first translation component 420, thereby adjusting the second indicator corresponding to the selected target to the zero-scale position. Test items include the viewing angle, maximum field of view, maximum resolution, maximum field of view height, distance from the endoscope 200's imaging end to the entrance pupil, and dynamic range of the endoscope 200, etc., and the corresponding target is replaced according to the different test items. Reflective targets include viewing angle targets, field of view targets, resolution targets, field of view scales, and entrance pupil distance targets, etc., while transmissive targets include dynamic range targets and resolution targets, etc.

[0074] S3: Adjust the rotary table 410 to the initial state at the zero mark position. In the initial state, the translation directions of the first translation component 420 and the second translation component 510 are consistent. Adjust the rotary table 410 to the corresponding angle according to the tilt angle of the endoscope 200's imaging end so that the imaging end of the endoscope 200 is facing the selected target. Drive the second translation component 510 to move the endoscope 200 toward the target and make the imaging end of the endoscope 200 abut against the center of the selected target.

[0075] S4: Drive the first translation component 420 to gradually move the target away from the imaging end to perform optical performance testing on the endoscope 200. During this process, the optical working distance is obtained according to the length scale pointed to by the second indicator.

[0076] The above description is merely an embodiment of this application and does 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 endoscopic testing fixture, characterized in that, include: Base (110); A first receiving component (120) is used to receive a reflective target for imaging by an endoscope (200). The first receiving component (120) is connected to the base (110) and faces the imaging end of the endoscope (200). The second receiving assembly (130) is used to receive a transmissive target for imaging by the endoscope (200). The second receiving assembly (130) is connected to the base (110) and faces the imaging end of the endoscope (200). The second receiving assembly (130) includes a light source (131) connected to the base (110) and a first clamping assembly (132) connected to the light source (131). The light source (131) has a light-transmitting surface (1311), and the first clamping assembly (132) forms a clamping space for securing the transmissive target. The clamping space corresponds to the light-transmitting area of ​​the light-transmitting surface (1311). The first clamping assembly (132) can move relative to the light source (131) and adjust the clamping space. The first receiving component (120) is located between the second receiving component (130) and the endoscope (200), and the first receiving component (120) is at least partially detachable from the base (110) to conduct the optical path between the endoscope (200) and the transmissive target.

2. The endoscopic testing fixture as described in claim 1, characterized in that, The first receiving component (120) includes: A bracket (121) is attached to the base (110); The first mounting plate (122) is detachably connected to the bracket (121), and the reflective target is mounted on the first mounting plate (122); The bracket (121) is provided with a first clearance hole (123) that guides the optical path, and the first clearance hole (123) corresponds to the first mounting plate (122).

3. The endoscopic testing fixture as described in claim 2, characterized in that, The first mounting plate (122) and the bracket (121) are detachably connected by one or more of the following methods: plug-in, magnetic, snap-fit, and threaded parts.

4. The endoscopic testing fixture as described in claim 2, characterized in that, The first mounting plate (122) is connected to the reflective target by magnetic attraction.

5. The endoscopic testing fixture as described in claim 1, characterized in that, The first clamping assembly (132) includes: There are two first clamping members (133), which are arranged opposite to each other on both sides of the light-transmitting surface (1311). The two first clamping members (133) can be movably connected to the light source (131) in opposite directions or in opposite directions. There are at least two elastic elements (134), and they are respectively connected to the two first clamping elements (133) in a transmission manner; The clamping space is formed between the two first clamping members (133), and the elastic member (134) provides a force that drives the two first clamping members (133) to move toward each other.

6. The endoscopic testing fixture as described in claim 1, characterized in that, The first clamping assembly (132) includes: A rotating ring (136) is rotatably connected to the light-transmitting surface (1311), and the rotating ring (136) includes a second clearance hole (1361) that avoids the light-transmitting area of ​​the light-transmitting surface (1311). Multiple second clamping members (137) are movably connected to the periphery of the light-transmitting surface (1311); and A rotary drive structure (138) is connected to the rotating ring (136) for transmission and is used to drive the rotating ring (136) to rotate; The clamping space is formed between the plurality of second clamping members (137), and the rotating ring (136) can rotate and push the plurality of second clamping members (137) to retract or expand.

7. The endoscopic testing fixture as described in claim 6, characterized in that, The outer edge of the rotating ring (136) is provided with a ring of teeth. The rotary drive structure (138) includes a worm (1381) rotatably connected to the light source (131) and a handle (1382) fixed to the end of the worm (1381). The worm (1381) meshes with the rotating ring (136).

8. The endoscopic testing fixture as described in claim 6, characterized in that, The light source (131) has a groove (1313) that is recessed inward from the light-transmitting surface (1311) in the area corresponding to the rotating ring (136). The groove (1313) corresponds one-to-one with the second clamping member (137). The rotating ring (136) has an arc-shaped hole (1362) at the position corresponding to the groove (1313). The second clamping member (137) is placed in the groove (1313) and the arc-shaped hole (1362). The rotating ring (136) can drive the arc-shaped hole (1362) to rotate and push the second clamping member (137) to move along the groove (1313).

9. A testing system, characterized in that, include: The endoscopic testing fixture as described in any one of claims 1 to 8; substrate(300); The first moving mechanism (400) includes a rotary table (410) mounted on the base plate (300) and a first translation component (420) mounted on the rotary table (410). The first fine-tuning component (700) is connected between the first translation component (420) and the base (110), and can adjust the position of the base (110) along the translation direction of the first translation component (420); The second clamping assembly (600) is used to clamp the endoscope (200); as well as The second moving mechanism (500) includes a second translation component (510) mounted on the substrate (300) and pulsatorically connected to the second clamping component (600). The rotating platform (410) can drive the first translation component (420) to rotate in the vertical direction, the first translation component (420) can drive the base (110) to translate in the horizontal direction, and the second translation component (510) can drive the second clamping component (600) to translate in the horizontal direction.

10. The testing system as described in claim 9, characterized in that, The second clamping assembly (600) includes: The third clamping member (610) is used to clamp the gripping part (210) of the endoscope (200). The fourth clamping member (620) is used to clamp the insertion part (220) of the endoscope (200). The fourth clamping member (620) includes a second fine-tuning component (625), which is adapted to adjust the position of the insertion part (220) in the vertical direction.

11. A test method using the test system as described in claim 9, characterized in that, Includes the following steps: S1: Mount the endoscope (200) onto the second clamping assembly (600) and level it; S2: Select a reflective target or a transmissive target according to the test item, adjust the first translation component (420) to the initial state, and adjust the selected target to the zero scale position of the first translation component (420); S3: Adjust the rotary stage (410) to the initial state at the zero mark position. When the rotary stage (410) is in the initial state, the translation directions of the first translation component (420) and the second translation component (510) are consistent. Adjust the rotary stage (410) to the corresponding angle according to the tilt angle of the endoscope (200) imaging end so that the imaging end of the endoscope (200) is facing the selected target. Drive the second translation component (510) to move the endoscope (200) toward the target and make the imaging end of the endoscope (200) abut against the center of the selected target. S4: Drive the first translation component (420) to gradually move the target away from the imaging end in order to test the optical performance of the endoscope (200).

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