Device for testing imaging performance of fluorescent endoscope

Abstract

The utility model relates to a device for testing the imaging performance of a fluorescent endoscope, which comprises a mounting frame, and a clamp assembly, a container placing disc and an integrating sphere which are sequentially distributed on the mounting frame from top to bottom, and a lighting device arranged on one side of the integrating sphere, and exciting light of the lighting device illuminates the container placing disc through the integrating sphere. The container placing disc is provided with observation holes which are distributed in a circumferential mode, the clamp assembly comprises a double-screw clamp used for fixing the fluorescent endoscope and an adjusting frame used for adjusting the irradiation angle of the fluorescent endoscope, and the main purpose of the utility model is to enable a light source in the container placing disc to be more uniform through the reflection effect of an integrating sphere; according to the fluorescent endoscope, the sensitivity and definition of the fluorescent endoscope are improved, three important indexes including the radiance response characteristic, the fluorescent signal-to-noise ratio and the fluorescent static image latitude of the fluorescent endoscope are analyzed through real-time data of a fluorescent image collected by the fluorescent endoscope, and important parameters are provided for judging the imaging performance of the fluorescent endoscope.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of endoscope test, especially to a device for testing imaging performance of fluorescence endoscope. BACKGROUND

[0002] The principle of fluorescence endoscope is to use excitation light of specific wavelength to irradiate target tissue, and the fluorescent substance in the tissue absorbs the excitation light energy and jumps to the excited state, and when these molecules in the excited state return to the ground state, they will emit longer wavelength fluorescence, which plays a key role in the technical field of biology and medicine.

[0003] However, the test device of the traditional endoscope mostly focuses on the detection of ordinary optical imaging, and has limitations in the detection of the fluorescence imaging characteristics of the fluorescence endoscope, and is not accurate enough in the imaging effect under the simulation of complex environment, for example, the intensity, wavelength and uniformity of the fluorescence excitation light cannot be accurately controlled, resulting in inaccurate test of the key performance indicators such as sensitivity and clarity of the fluorescence endoscope. UTILITY MODEL CONTENT

[0004] In order to overcome the shortcomings of the background art, the utility model adopts the technical scheme: a device for testing imaging performance of fluorescence endoscope, comprising a mounting frame, a clamp assembly, a container placing disc and an integrating sphere which are sequentially distributed on the mounting frame from top to bottom, and a lighting device arranged on one side of the integrating sphere, the excitation light of the lighting device illuminates the container placing disc through the integrating sphere, the container placing disc is provided with observation holes which are circumferentially distributed, the clamp assembly comprises a double screw clamp for fixing the fluorescence endoscope, and an adjusting frame for adjusting the irradiation angle of the fluorescence endoscope.

[0005] The above technical scheme is adopted, the lighting device is a fluorescence excitation light source for matching the fluorescence imaging requirements, which can accurately output the specified range of excitation light, has the characteristics of high stability, high uniformity and wide intensity adjustment range, and can ensure to provide accurate and appropriate excitation conditions for the fluorescence endoscope, the light source is more uniform in the container placing disc through the reflection of the integrating sphere, the sensitivity and clarity of the fluorescence endoscope are improved, the real-time data of the fluorescence image collected by the fluorescence endoscope are analyzed to analyze the three important indicators of the radiance response characteristic, the fluorescence signal-to-noise ratio and the fluorescence static image tolerance of the fluorescence endoscope, and important parameters are provided for judging the imaging performance of the fluorescence endoscope.

[0006] The utility model is further provided, the container placing disc comprises an adapter disc, a glass dish and a cover plate which are sequentially sleeved in the adapter disc, the integrating sphere is provided with an illumination surface corresponding to the glass dish, and one side of the integrating sphere is provided with a side pipe for connecting the lighting device, and the observation holes are circumferentially distributed on the cover plate.

[0007] Further, the mounting frame is provided with a first countersunk groove for mounting an adapter disc, and the adapter disc is provided with a second countersunk groove for mounting a glass dish.

[0008] Further, the cover plate is provided with a first scale groove corresponding to the observation hole, and the adapter disc is provided with a second scale groove corresponding to the first scale groove.

[0009] By the above technical scheme, the cover plate is a plate with no less than 10 holes meeting the standard, and the glass dish is used for placing a container containing fluorescent test liquid with different concentrations, each hole corresponding to fluorescent test liquid with different concentrations, and being used for analyzing the range of different concentrations of fluorescent solution recognizable by a fluorescence endoscope camera system.

[0010] The utility model further provides for, the adjusting frame includes axle seat, vertical shaft, cross shaft, adjusting shaft, adapter shaft and double axle fixer, vertical shaft is through axle seat perpendicular distribution in mounting frame, and vertical shaft, cross shaft, adjusting shaft, adapter shaft all are connected through double axle fixer, adapter shaft is connected with double screw clamp.

[0011] By the above technical scheme, the double axle fixer is provided with a hand wheel for locking the optical axis, and through linkage of the vertical shaft, the cross shaft and the adjusting shaft, vertical adjustment, horizontal adjustment and probe orientation adjustment of the fluorescence endoscope are realized, the adjustment range is wide, and various demands of fluorescence endoscope imaging test are met.

[0012] The utility model further provides for, the double screw clamp includes fixed base, left clamp block, right clamp block, positioning optical axis and double head screw, the both sides of fixed base are slidably connected with left clamp block and right clamp block through positioning optical axis, and fixed base is rotatably connected with double head screw for controlling left clamp block and right clamp block move towards or opposite.

[0013] Further, the double head screw is provided with an optical axis part, and left and right threaded parts on both sides of the optical axis part, the fixed base is rotatably connected to the optical axis part through a bearing, the left and right clamp blocks are respectively engaged with the left and right threaded parts, and the left / right clamp block is provided with a protruding part towards the fixed base.

[0014] Further, one end of the double head screw is provided with a stirrup buckle.

[0015] By the above technical scheme, the clamp structure with the double head screw is used to fix the fluorescence endoscope, the stirrup buckle is rotated to drive the double head screw to rotate, so that the left and right clamp blocks are controlled to move towards or opposite directions, the demands of most models of endoscope test are met, and the utility range is wide.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The light source is reflected by the integrating sphere, so that the light source in the container placing disc is more uniform, the sensitivity and the clarity of the fluorescence endoscope are improved, the real-time data of the fluorescence image collected by the fluorescence endoscope are analyzed, and three important indexes of the luminance response characteristic of the fluorescence endoscope, the fluorescence signal-to-noise ratio and the fluorescence static image tolerance are analyzed, so that important parameters for judging the imaging performance of the fluorescence endoscope are provided.

[0018] The embodiments of the utility model will be further explained in connection with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the perspective view of the utility model;

[0020] Figure 2 It is the structure explosion map of the container placing disc of the utility model;

[0021] Figure 3 It is the section view of the integrating sphere of the utility model;

[0022] Figure 4 It is the top view of the mounting frame of the utility model;

[0023] Figure 5 It is the perspective view of the adjusting frame of the utility model;

[0024] Figure 6 It is the perspective view of the clamp assembly of the utility model;

[0025] Wherein: 1 - mounting frame, 2 - clamp assembly, 3 - container placing disc, 4 - integrating sphere, 5 - lighting device, 6 - fluorescence endoscope, 7 - double screw clamp, 8 - adjusting frame, 9 - observation hole, 11 - first countersunk groove, 12 - identification slot, 31 - adapter disc, 32 - glass dish, 33 - cover plate, 34 - second countersunk groove, 35 - first scale groove, 36 - second scale groove, 41 - illumination surface, 42 - side tube, 71 - fixed seat, 72 - left clamp block, 73 - right clamp block, 74 - positioning optical axis, 75 - double head screw, 76 - optical axis part, 77 - left threaded part, 78 - right threaded part, 79 - convex part, 80 - stirrup buckle, 81 - shaft seat, 82 - vertical shaft, 83 - horizontal shaft, 84 - adjusting shaft, 85 - adapter shaft, 86 - double-shaft fixer, 87 - hand wheel; DETAILED DESCRIPTION

[0026] As Figure 1As shown, the embodiment provides a device for testing the imaging performance of a fluorescence endoscope, which comprises a mounting frame 1, a clamp assembly 2, a container placement disc 3 and an integrating sphere 4 arranged on the mounting frame 1 in sequence from top to bottom, and an illumination device 5 arranged on one side of the integrating sphere 4. The excitation light of the illumination device 5 illuminates the container placement disc 3 through the integrating sphere 4. The container placement disc 3 is provided with observation holes 9 arranged in a circle. The clamp assembly 2 comprises a double screw clamp 7 for fixing the fluorescence endoscope 6 and an adjusting frame 8 for adjusting the irradiation angle of the fluorescence endoscope 6.

[0027] In combination Figures 2-4 As shown, in the embodiment, the container placement disc 3 comprises an adapter disc 31, a glass dish 32 and a cover plate 33 arranged in sequence in the adapter disc 31. The integrating sphere 4 is provided with an illumination surface 41 corresponding to the glass dish 32. One side of the integrating sphere 4 is provided with a side pipe 42 for connecting the illumination device 5. The light source of the illumination device 5 enters the integrating sphere 4 through the side pipe 42. The observation holes 9 are arranged in a circle on the cover plate 33. The mounting frame 1 is provided with a first countersunk groove 11 for mounting the adapter disc 31. The adapter disc 31 is provided with a second countersunk groove 34 for mounting the glass dish 32. The cover plate 33 is provided with a first scale groove 35 corresponding to the observation holes 9 and a number. The adapter disc 31 is provided with a second scale groove 36 corresponding to the first scale groove 35. The mounting frame 1 is provided with an identification groove 12 corresponding to the second scale groove 36. The identification groove 12 is used for positioning the adapter disc 31.

[0028] In combination Figure 5 As shown, in the embodiment, the adjusting frame 8 comprises a shaft seat 81, a vertical shaft 82, a horizontal shaft 83, an adjusting shaft 84, an adapter shaft 85 and a double shaft fixer 86. The vertical shaft 82 is arranged vertically on the mounting frame 1 through the shaft seat 81. The vertical shaft 82, the horizontal shaft 83, the adjusting shaft 84 and the adapter shaft 85 are connected through the double shaft fixer 86. The adapter shaft 85 is connected with the double screw clamp 7. The double shaft fixer 86 is provided with a hand wheel 87 for locking the optical axis. Through the linkage of the vertical shaft 82, the horizontal shaft 83 and the adjusting shaft 84, the vertical adjustment, the horizontal adjustment and the orientation adjustment of the fluorescence endoscope 6 are realized. The adjusting range is wide, which meets the various requirements of testing the imaging of the fluorescence endoscope 6.

[0029] In combination Figure 6As shown, in the embodiment, the double screw clamp 7 comprises a fixed seat 71, a left clamp block 72, a right clamp block 73, a positioning optical shaft 74 and a double head screw 75, the two sides of the fixed seat 71 are slidably connected with the left clamp block 72 and the right clamp block 73 through the positioning optical shaft 74, and the fixed seat 71 is rotatably connected with the double head screw 75 for controlling the left clamp block 72 and the right clamp block 73 to move towards each other or in opposite directions, the double head screw 75 is provided with an optical shaft part 76, a left threaded part 77 and a right threaded part 78 on the two sides of the optical shaft part 76, the fixed seat 71 is rotatably connected with the optical shaft part 76 through a bearing, and the optical shaft part is provided with a groove for mounting a clamping spring, the left clamp block 72 and the right clamp block 73 are respectively engaged with the left threaded part 77 and the right threaded part 78, the left clamp block 72 / the right clamp block 73 is provided with a protruding part 79 towards the fixed seat 71, and one end of the double head screw 75 is provided with a stirrup buckle 80.

[0030] The working principle of the utility model is that the lighting device 5 is a fluorescent excitation light source, can emit excitation light with a wave band of 780-850nm and a transmittance of more than 95%, the glass dish 32 is provided with 18 groups of containers containing fluorescent test liquids with different concentrations, the cover plate 33 is an 18-hole plate with accurate positioning, each hole corresponds to fluorescent test liquid with different concentration, the excitation light is more uniform in the container through the reflection of the integrating sphere 4, the sensitivity and the definition of the fluorescence endoscope 6 are improved, the real-time data of the fluorescence image collected by the fluorescence endoscope 6 are used to analyze three important indexes of the luminance response characteristic of the fluorescence endoscope 6, the fluorescence signal-to-noise ratio and the fluorescence static image tolerance, and important parameters are provided for judging the imaging performance of the fluorescence endoscope 6.

[0031] The above are preferred embodiments of the application, and do not limit the protection scope of the application, therefore: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A device for testing the imaging performance of a fluorescence endoscope, characterized in that, The device includes a mounting frame (1), and a clamp assembly (2), a container placement tray (3), and an integrating sphere (4) arranged sequentially from top to bottom on the mounting frame (1), as well as an illumination device (5) located on one side of the integrating sphere (4). The excitation light of the illumination device (5) illuminates the container placement tray (3) through the integrating sphere (4). The container placement tray (3) is provided with observation holes (9) arranged in a circular pattern. The clamp assembly (2) includes a twin-screw clamp (7) for fixing the fluorescence endoscope, and an adjustment bracket (8) for adjusting the illumination angle of the fluorescence endoscope.

2. The apparatus for testing the imaging performance of a fluorescence endoscope according to claim 1, characterized in that: The container placement tray (3) includes a transfer tray (31), a glass dish (32) and a cover plate (33) sequentially fitted inside the transfer tray (31). The integrating sphere (4) has an illumination surface (41) corresponding to the glass dish (32), and one side of the integrating sphere (4) has a side tube (42) for connecting the lighting device (5). The observation holes (9) are circumferentially distributed on the cover plate (33).

3. The apparatus for testing the imaging performance of a fluorescence endoscope according to claim 2, characterized in that: The mounting bracket (1) is provided with a first countersunk groove (11) for mounting the adapter plate (31), and the adapter plate (31) is provided with a second countersunk groove (34) for mounting the glass dish (32).

4. The apparatus for testing the imaging performance of a fluorescence endoscope according to claim 3, characterized in that: The cover plate (33) is provided with a first scale groove (35) corresponding to the observation hole (9), and the adapter plate (31) is provided with a second scale groove (36) corresponding to the first scale groove (35).

5. The apparatus for testing the imaging performance of a fluorescence endoscope according to claim 1, characterized in that: The adjustment frame (8) includes a bearing seat (81), a vertical shaft (82), a horizontal shaft (83), an adjustment shaft (84), a transition shaft (85), and a dual-axis retainer (86). The vertical shaft (82) is vertically distributed on the mounting frame (1) through the bearing seat (81), and the vertical shaft (82), horizontal shaft (83), adjustment shaft (84), and transition shaft (85) are all connected through the dual-axis retainer (86). The transition shaft (85) is connected to the double screw clamp (7).

6. The apparatus for testing the imaging performance of a fluorescence endoscope according to claim 1, characterized in that: The twin-screw clamp (7) includes a fixed base (71), a left clamping block, a right clamping block (73), a positioning optical axis (74), and a double-headed screw (75). The left clamping block (72) and the right clamping block (73) are slidably connected to both sides of the fixed base (71) through the positioning optical axis (74), and the fixed base (71) is rotatably connected to the double-headed screw (75) for controlling the left clamping block (72) and the right clamping block (73) to move in opposite directions.

7. The apparatus for testing the imaging performance of a fluorescence endoscope according to claim 6, characterized in that: The double-ended screw (75) is provided with an optical axis (76), and a left threaded part (77) and a right threaded part (78) provided on both sides of the optical axis (76). The fixed seat (71) is rotatably connected to the optical axis (76) through a bearing. The left clamping block (72) and the right clamping block (73) are respectively engaged with the left threaded part (77) and the right threaded part (78). The left clamping block (72) / right clamping block (73) is provided with a protrusion (79) in the direction facing the fixed seat (71).

8. The apparatus for testing the imaging performance of a fluorescence endoscope according to claim 7, characterized in that: One end of the double-ended screw (75) is provided with a stirrup buckle (80).

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