Hardness endoscope objective lens debugging device

Abstract

The present application relates to a kind of hard endoscope objective lens debugging device, it solves the technical problem that light path is easily deformed, curved, unstable when manual adjustment light path by operator in the objective lens system assembly production process of existing hard tube endoscope, it includes back light, back light connecting plate, reinforcing plate, stand, support plate, light path placement seat, locking screw, 60 ° connecting sleeve, camera, camera fixed plate, base fixed plate, arm support plate, first screw, second screw, workbench, objective lens adjusting device, two support frames, two fixed supports, four workbench support columns and four adjusting foot pads.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rigid endoscopes, in particular to a rigid endoscope objective lens debugging device. BACKGROUND

[0002] Rigid endoscopes are widely used in minimally invasive surgery medical field. A rigid endoscope mainly consists of an optical imaging system and an illumination system. The optical part looks like a long metal tube, and inside it is a complete optical system composed of many lenses. The optical imaging system consists of three systems: objective lens system, relay system and eyepiece system. Referring to the invention application with publication number CN 114129118 A and the invention patent application with publication number CN 114994903 A, and the invention patent application with application publication number CN 105301757 A, in the current assembly and production process of the objective lens system, the operator manually adjusts the position of the optical path. When debugging the optical path, because the optical path is not fixed firmly, the operator's arm is suspended and shaken, etc., which makes the optical path easily deformed, bent and unstable. SUMMARY

[0003] The present application is to solve the technical problem that in the current assembly and production process of the objective lens system of the rigid endoscope, the operator manually adjusts the position of the optical path, which makes the optical path easily deformed, bent and unstable. The present application provides a rigid endoscope objective lens debugging device which can prevent the optical path from deforming and bending, and can adjust the objective lens glued lens 23 to the right position.

[0004] The application provides a hard endoscope objective lens debugging device, which comprises a backlight lamp, a backlight lamp connecting plate, a reinforcing plate, a stand, a support plate, a light path placing seat, a locking screw, a 60-degree connecting sleeve, a camera, a camera fixing plate, a base fixing plate, an arm support plate, a first screw, a second screw, a workbench, an objective lens adjusting device, two support frames, two fixed supports, four workbench supporting columns and four adjusting foot pads, the four workbench supporting columns are connected with the four adjusting foot pads respectively, the workbench is connected with the four workbench supporting columns, the two fixed supports are fixedly connected with the workbench, the two support frames are connected with the two fixed supports respectively, the arm support plate is connected with the two support frames, the base fixing plate is fixedly connected with the workbench, the camera fixing plate is fixedly connected on the base fixing plate, the light path placing seat is fixedly connected on the base fixing plate, and the two spring pressing pieces are connected with the light path placing seat. The stand is fixedly connected on the base fixing plate, the support plate is connected between the stand and the base fixing plate, and the backlight lamp connecting plate is fixedly connected with the stand through the screw; the reinforcing plate is connected between the backlight lamp connecting plate and the stand; the backlight lamp connecting plate is provided with side-by-side first and second sliding grooves, the first screw is connected with a first threaded hole on the backlight lamp after penetrating through the first sliding groove, and the second screw is connected with a second threaded hole on the backlight lamp after penetrating through the second sliding groove; the objective lens adjusting device is fixedly connected with the stand, the objective lens adjusting device is located below the backlight lamp, and the objective lens adjusting device is located above the light path placing seat; the camera is fixedly connected on the camera fixing plate, the 60-degree connecting sleeve is connected with a lens of the camera, and the 60-degree connecting sleeve is connected with the light path placing seat.

[0005] The inclined surface of the light path placing seat is provided with a positioning groove, the inclined surface is connected with the two spring pressing pieces, the light path placing seat is provided with a sleeve connecting part, and the positioning groove and the horizontal plane form a 60-degree included angle; the sleeve connecting part is provided with a round hole and a terminal screw connecting part, the 60-degree connecting sleeve is placed in the round hole, the locking screw is connected with a screw hole in the terminal screw connecting part so as to be fixedly connected with the 60-degree connecting sleeve; the axis of the 60-degree connecting sleeve and the horizontal plane form a 60-degree included angle, and the axis of the 60-degree connecting sleeve coincides with the axis of the positioning groove.

[0006] The objective lens adjusting device comprises a base, an objective lens adjusting disc, four objective lens adjusting disc stand columns, four micro differential heads and four objective lens push rods, the four objective lens adjusting disc stand columns are fixedly connected with the base, the four objective lens adjusting disc stand columns are uniformly distributed in the circumferential direction, the four micro differential heads are connected with the four objective lens adjusting disc stand columns respectively, the objective lens adjusting disc is fixed between the four objective lens adjusting disc stand columns, the four objective lens push rods are connected with the four micro differential heads respectively, the four objective lens push rods all penetrate through the objective lens adjusting disc, the four objective lens push rods are located on the horizontal plane, and the free ends of the four objective lens push rods are close to each other; and the base is fixedly connected with the stand.

[0007] Preferably, the support frame is inserted into the fixed support to realize sliding connection and is fixed by a screw.

[0008] The beneficial effects of the present application are that the light path adjustment and debugging process is convenient, stable and reliable, the adjustment time is short, the product assembly efficiency is high, the displacement of the objective lens glued lens can be precisely adjusted, the objective lens glued lens is accurately attached to the designed position on the inclined surface of the objective lens inclined glued lens, and the imaging quality of the final product rigid endoscope is ensured. During the entire operation process, the light path is not easy to deform and bend.

[0009] Further features of the present application will be clearly described in the following detailed description of the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is an isometric view of the hard endoscope objective lens debugging device;

[0011] Figure 2 is a front view of the structure shown in Figure 1

[0012] Figure 3 is a rear view of the structure shown in Figure 1

[0013] Figure 4 is a right view of the structure shown in Figure 1

[0014] Figure 5 is a left view of the structure shown in Figure 1

[0015] Figure 6 is a top view of the structure shown in Figure 1

[0016] Figure 7 is a structure diagram of the light path placement seat in Figure 1

[0017] Figure 8 is a structure diagram of the sleeve connecting part in the light path placement seat shown in Figure 7

[0018] Figure 9 is a structure diagram of two screws passing through two slides of the backlight connecting plate in Figure 1

[0019] Figure 10 is a structure diagram of the objective lens adjustment device;

[0020] Figure 11 is a working process diagram of the objective lens adjustment device;

[0021] Figure 12 is a partial enlarged view of the structure shown in Figure 11

[0022] Figure 13 is​​​​​​​​​Figure 11 The structure diagram of the spring pressing plate pressing the light path in the structure shown;

[0023] Figure 14 is Figure 12 The structure diagram of the objective lens oblique vision glued lens in the structure shown;

[0024] Figure 15 is Figure 12 The structure diagram of the objective lens glued lens and the objective lens oblique vision glued lens.

[0025] Figure 16 The structure diagram of the support frame connected with the fixed support frame;

[0026] Figure 17 The diagram of the surface of the backlight lamp setting test pattern;

[0027] Figure 18 The principle diagram of the camera imaging on the display screen;

[0028] Figure 19 The diagram of the display screen displaying the backlight lamp contour, the backlight lamp contour being in the center of the display screen;

[0029] Figure 20 The diagram of the backlight lamp contour not being in the center of the display screen but being offset upward;

[0030] Figure 21 The diagram of the backlight lamp contour not being in the center of the display screen but being offset rightward.

[0031] Explanation of symbols in the diagram

[0032] 1. Backlight lamp, 2. Backlight lamp connecting plate, 2-1. First sliding channel, 2-2. Second sliding channel, 3. Reinforcing plate, 4. Column, 5. Support plate, 6. Light path placing seat, 6-1. Positioning groove, 6-2. Spring pressing plate connecting part, 6-3. Sleeve connecting part, 6-3-1. Circular hole, 6-3-2. End screw connecting part, 7. Spring pressing plate, 8. Light path, 9. Locking screw, 10. 60° connecting sleeve, 11. Camera, 12. Camera fixing plate, 13. Base fixing plate, 14. Arm support plate, 15. Support frame, 16. Fixed support frame, 17. Workbench, 18. Workbench support column, 19. Adjustment foot pad, 20. Objective lens adjusting device, 20-1. Base, 20-2. Objective lens adjusting disc, 20-3. Objective lens adjusting disc column, 20-4. Micro head, 20-5. Objective lens push rod. 21. First screw, 22. Second screw. 23. Objective lens glued lens, 24. Objective lens oblique vision glued lens, 24-1. Diaphragm position. 25. Screw, 26. Screw. 27. Computer, 28. Display screen. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1-8 As shown, the rigid endoscope objective adjustment device includes a backlight 1, a backlight connecting plate 2, a reinforcing plate 3, a column 4, a support plate 5, an optical path placement seat 6, spring pressure plates 7, locking screws 9, a 60° connecting sleeve 10, a camera 11, a camera fixing plate 12, a base fixing plate 13, an arm support plate 14, a support frame 15, a fixed bracket 16, a worktable 17, worktable support columns 18, adjusting feet 19, and an objective adjustment device 20. Four worktable support columns 18 are connected to four adjusting feet 19, the worktable 17 is connected to the four worktable support columns 18, two fixed brackets 16 are fixedly connected to the worktable 17, two support frames 15 are connected to the two fixed brackets 16, the arm support plate 14 is connected to the two support frames 15, the base fixing plate 13 is fixedly installed on the worktable 17, and the camera fixing plate 12 is fixedly installed on the base fixing plate 13. The optical path placement seat 6 is fixedly installed on the base fixing plate 13, and two spring pressure plates 7 are connected to the optical path placement seat 6. The column 4 is fixedly installed on the base fixing plate 13, and the support plate 5 connects the column 4 and the base fixing plate 13 to strengthen the fixation. The backlight connecting plate 2 is fixedly connected to the column 4 by screws. The connection position of the screws on the column 4 can be changed, so that the height of the backlight connecting plate 2 can be adjusted according to actual needs, thereby adjusting the height of the backlight 1. The reinforcing plate 3 connects the backlight connecting plate 2 and the column 4 to strengthen the fixation. The backlight connecting plate 2 has a first slide rail 2-1 and a second slide rail 2-2 arranged side by side. A first screw 21 passes through the first slide rail 2-1 and connects to a first threaded hole on the backlight 1. A second screw 22 passes through the second slide rail 2-2 and connects to a second threaded hole on the backlight 1. The first screw 21 can move within the first slide rail 2-1, and the second screw 22 can move within the second slide rail 2-2. After adjusting the positions of the first screw 21 and the second screw 22, tightening them fixes the backlight 1. Thus, the position of the backlight 1 can be adjusted by moving it back and forth as needed. The objective lens adjustment device 20 is fixedly connected to the column 4 and is located below the backlight 1. The objective lens adjustment device 20 is located above the optical path mounting base 6. The camera 11 is fixedly mounted on the camera mounting plate 12, and a 60° connecting sleeve 10 connects to the lens of the camera 11. The 60° connecting sleeve 10 is connected to the optical path placement seat 6, and the locking screw 9 is connected to the optical path placement seat 6.

[0035] like Figure 7 As shown, the inclined surface of the optical path placement seat 6 is provided with a positioning groove 6-1, and two spring pressure plate connecting parts 6-2 are provided on the inclined surface. The optical path placement seat 6 is provided with a sleeve connecting part 6-3. Figure 2 As shown, the positioning groove 6-1 forms a 60° angle with the horizontal plane.

[0036] As Figure 8 shown, the sleeve connecting part 6-3 is provided with a round hole 6-3-1 and a terminal screw connecting part 6-3-2. The 60° connecting sleeve 10 is put into the round hole 6-3-1, the locking screw 9 is connected with the screw hole in the terminal screw connecting part 6-3-2, and the locking screw 9 is tightened to make the two parts of the sleeve connecting part 6-3 close to each other, so that the 60° connecting sleeve 10 is clamped and fixed in the round hole 6-3-1.

[0037] As Figure 1 , 2 shown, the axis of the 60° connecting sleeve 10 forms a 60° angle with the horizontal plane, and the axis of the 60° connecting sleeve 10 coincides with the axis of the positioning groove 6-1.

[0038] As Figure 10 shown, the objective lens adjusting device 20 includes a base 20-1, four objective lens adjusting disc columns 20-3 fixedly connected with the base 20-1, the four objective lens adjusting disc columns 20-3 being uniformly distributed in the circumferential direction, four micro differential heads 20-4 respectively connected with the four objective lens adjusting disc columns 20-3, an objective lens adjusting disc 20-2 fixed between the four objective lens adjusting disc columns 20-3, four objective lens push rods 20-5 respectively connected with the four micro differential heads 20-4, and the four objective lens push rods 20-5 all penetrating through the objective lens adjusting disc 20-2. The four objective lens push rods 20-5 are located in the horizontal plane. The free ends of the four objective lens push rods 20-5 are close to each other. When the micro differential head 20-4 is operated, the micro differential head 20-4 drives the objective lens push rod 20-5 to move forward or backward. The base 20-1 is fixedly connected with the column 4.

[0039] The working process of the above-mentioned rigid endoscope objective lens adjusting device will be introduced below:

[0040] The workbench 17 is the horizontal base surface of the overall system, which is supported by the workbench support column 18 and the adjusting foot pad 19. The adjusting foot pad 19 can be adjusted horizontally according to the actual test horizontal deviation.

[0041] The operator first puts the light path 8 into the positioning groove 6-1 of the light path placing seat 6 (as Figure 1 shown), and then inserts one end of the light path 8 into the 60° connecting sleeve 10 (the axis of the light path coincides with the axis of the 60° connecting sleeve 10), and the other end of the light path 8 is provided with an objective lens oblique viewing cemented lens 24 (as Figure 12 and 15As shown, since the positioning groove 6-1 forms a 60° angle with the horizontal plane, the inclined plane at the end of the objective lens obliquely glued lens 24 is located on the horizontal plane. Then, when the arm support plate 14 holds the operator's arm, the operator adjusts the height of the optical path 8 by hand so that the other end of the optical path 8 approaches the center of the four objective lens push rods 20-5, that is, to make the objective lens obliquely glued lens 24 approach the center of the four objective lens push rods 20-5 (as Figure 12 shown). Then, the objective lens glued lens 23 is pasted on the inclined plane of the objective lens obliquely glued lens 24 (as Figure 12 and 15 shown). The objective lens glued lens 23 is located between the free ends of the four objective lens push rods 20-5. Then, two spring clips 7 are used to press the optical path 8 to fix the optical path. It can be seen that during the process of adjusting the position of the optical path 8, the arm support plate 14 reduces the burden on the operator's arm, ensures the stability of the debugging process, and ensures the accurate positioning of the optical path 8. The height of the arm support plate 14 can be adjusted by the cooperation between the support frame 15 and the fixed bracket 16 (as Figure 16 shown. The support frame 15 is inserted into the fixed bracket 16 to achieve a sliding connection to adjust the height of the arm support plate 14, and the support frame 15 is locked and fixed to the fixed bracket 16 with a screw 25. Similarly, the other support frame is also fixed with a screw 26), so as to meet the arms of different operators.

[0042] Next, operate the four differential heads 20-4 to make the four objective lens push rods 20-5 move cooperatively to push the objective lens glued lens 23, and finally make the objective lens glued lens 23 located at the position required by the design on the inclined plane of the objective lens obliquely glued lens 24 (that is, the aperture position 24-1. The area of the bottom circle of the objective lens glued lens 23 is much larger than the area of the aperture position 24-1, that is, the bottom circle of the objective lens glued lens 23 covers the aperture position 24-1). Then, adjust the focal length of the camera 11 and determine the imaging quality to meet the quality standard required by the design. To be qualified and meet the quality standard required by the design, two conditions must be met. One is clarity, and the other is that the backlight outline displayed on the display screen is located at the center position.

[0043] Obviously, the whole operation process is convenient, stable, and reliable, with a short adjustment time and high product assembly efficiency. It can precisely adjust the displacement of the objective lens glued lens 23 to make the objective lens glued lens 23 accurately adhere to the position required by the design on the inclined plane of the objective lens obliquely glued lens 24, ensuring the imaging quality of the final product, the rigid endoscope. During the whole operation process, the optical path is not prone to deformation and bending.

[0044] As Figure 17 shown, a test pattern is set on the surface of the backlight 1. The pattern consists of multiple concentric circles, and multiple line segments intersect at the center of the circle, similar to the shape of a spider web. As Figure 18As shown, the image acquired by the camera 11 is displayed on the display screen, and the specific process of judging the imaging quality by adjusting the focal length of the camera 11 is that the axis of the light path 8, the axis of the 60° connecting sleeve 10, and the axis of the camera 11 are coincident (all concentric), and when the center of the circle in the pattern on the backlight 1 coincides with the axis of the light path 8, the display screen 28 displays Figure 19 In the state shown, the backlight 1 is located at the center of the display screen 28, and the display screen 28 displays the clarity of the backlight 1 to meet the requirements, at this time, it is determined to be qualified, the imaging quality meets the design requirements, and the objective lens glued lens 23 is adjusted in place; if the display screen appears as shown in Figure 20 or 21, the backlight 1 is offset from the center of the display screen 28, then it is determined to be unqualified, the imaging quality does not meet the design requirements, and the objective lens glued lens 23 is not adjusted in place.

[0045] Regarding the judgment of clarity, the following judgment method can be used: the black circle and line segment similar to the spider web pattern are clearly divided from the white background, and the edges of the circle and line segment are not uneven and blurred, then it is considered that the clarity meets the requirements, otherwise it is considered to be unclear.

[0046] The above describes the present application and its embodiments in a schematic manner, and the description is not restrictive, and the shown in the drawings is only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if the person skilled in the art is inspired thereby, without departing from the purpose of the present application, similar structure and embodiments are adopted by using other forms of parts configuration, driving device, and connection mode without creative design, which should belong to the protection scope of the present application.

Claims

1. A hard endoscope objective lens adjusting device, characterized by, The utility model provides a kind of optical path placing seat, it includes backlight, backlight connecting plate, reinforcing plate, stand, support plate, optical path placing seat, locking screw, 60 ° connecting sleeve, camera, camera fixed plate, base fixed plate, arm support plate, first screw, second screw, workbench, objective lens adjusting device, two support frames, two fixed supports, four workbench support columns and four adjusting foot pads, the four workbench support columns are connected with four adjusting foot pads respectively, the workbench is connected with four workbench support columns, the two fixed supports are fixedly connected with workbench, the two support frames are connected with two fixed supports respectively, the arm support plate is connected with two support frames, the base fixed plate is fixedly connected with workbench, the camera fixed plate is fixedly connected on base fixed plate, the optical path placing seat is fixedly connected on base fixed plate, two spring tablets are connected with optical path placing seat, the stand is fixedly connected on base fixed plate, the support plate is connected between stand and base fixed plate, the backlight connecting plate is fixedly connected with stand by screw;The reinforcing plate is connected between backlight connecting plate and stand;The backlight connecting plate is equipped with side-by-side first slide, second slide, the first screw is connected with the first threaded hole on backlight after passing through first slide, the second screw is connected with the second threaded hole on backlight after passing through second slide;The objective lens adjusting device is fixedly connected with stand, and objective lens adjusting device is below backlight, and objective lens adjusting device is above optical path placing seat;The camera is fixedly connected on camera fixed plate, the 60 ° connecting sleeve is connected with the lens of camera, and the 60 ° connecting sleeve is connected with optical path placing seat;The inclined surface of optical path placing seat is equipped with positioning groove, and the inclined surface is connected with two spring tablets, and the optical path placing seat is equipped with sleeve connecting portion, and the positioning groove is 60 ° angle with horizontal plane;The sleeve connecting portion is equipped with round hole, end screw connecting portion, the 60 ° connecting sleeve is placed in round hole, and locking screw is connected with the screw hole in end screw connecting portion to fix 60 ° connecting sleeve;The axis of 60 ° connecting sleeve is 60 ° angle with horizontal plane, and the axis of 60 ° connecting sleeve coincides with the axis of positioning groove;The objective lens adjusting device includes base, objective lens adjusting disc, four objective lens adjusting disc stands, four micro differential heads and four objective lens push rods, the four objective lens adjusting disc stands are fixedly connected with base, and four objective lens adjusting disc stands are evenly distributed along circumferential direction, the four micro differential heads are connected with four objective lens adjusting disc stands respectively, the objective lens adjusting disc is fixed between four objective lens adjusting disc stands, the four objective lens push rods are connected with four micro differential heads respectively, the four objective lens push rods all pass through objective lens adjusting disc, the four objective lens push rods are located in horizontal plane, and the free end of four objective lens push rods is close to each other;The base is fixedly connected with stand.

2. The rigid endoscope objective debugging device according to claim 1, characterized in that, The support frame is inserted into the fixed support to achieve sliding connection and is fixed by a screw.

3. The rigid endoscope objective debugging device according to claim 1 or 2, characterized in that, The surface of the backlight is provided with a test pattern.

4. The rigid endoscope objective debugging device according to claim 3, characterized in that, The test pattern is composed of a plurality of concentric circles, and a plurality of line segments intersect at the center. The support frame is inserted into the fixed support to achieve sliding connection and is fixed by a screw.

5. The rigid endoscope objective debugging device according to claim 3, characterized in that, The hard endoscope objective debugging device further comprises a computer and a display screen, the computer is connected with the camera, and the display screen is connected with the computer.

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