Tip head and endoscope using same

Abstract

The utility model relates to the technical field of endoscopes, and particularly discloses a tip and an endoscope applying the tip, because a light guide axis of a first lighting device and a light guide axis of a second lighting device are asymmetrically arranged around a camera shooting optical axis of a camera shooting device, the combined lighting range formed by the first lighting device and the second lighting device is enlarged, and the lighting effect is improved. The lens surface of the camera device is farther away from the second area than the light-emitting surface of the first lighting device and the light-emitting surface of the second lighting device, that is, the light-emitting surface and the lens surface are arranged in a height difference manner, so that the combined lighting range formed by the first lighting device and the second lighting device can be further enlarged; the combined illumination range covers the camera shooting range of the camera shooting device, so that the light source illuminance of the endoscope is sufficient, the illumination field angle of the endoscope is sufficient to cover the field angle of the camera shooting device, the illumination area of the endoscope completely covers the image display area, and finally the problem that the brightness and illuminance difference of the obtained endoscope image is large can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a tip and an endoscope used therein. Background Art

[0002] An endoscope is a medical device with a camera and a light source assembly at the front end that can enter the human body cavity to detect lesions. Commonly used portable endoscopes use the camera and light source assembly to capture images of the inside of the cavity to assist in surgery.

[0003] In the existing technology, the image obtained by the endoscope has a large difference in brightness and darkness. Specifically, the light source illumination of the existing endoscope is insufficient, and the field of view of the endoscope is not sufficient to cover the field of view of the camera device, so that the lighting area of ​​the endoscope cannot completely cover the image display area, making it impossible for the user to fully observe the inside of the body cavity, and resulting in a large difference in brightness and darkness in the obtained endoscopic image.

[0004] Therefore, it is of practical value to study a tip that can reduce the difference in brightness of captured endoscopic images and an endoscope using the tip. Utility Model Content

[0005] The utility model aims to provide a tip and an endoscope used therein, so as to solve the problem that the image captured in the prior art has a large difference in brightness and darkness.

[0006] In order to solve the above technical problems, the first technical solution of the utility model provides a tip, including:

[0007] A tip body, the tip body comprising a first area and a second area, the first area and the second area are respectively arranged at two ends of the tip;

[0008] A first lighting device, the first lighting device is installed in the tip body, and the light emitting surface of the first lighting device is arranged in the first area;

[0009] A second lighting device, the second lighting device is installed in the tip body, and the light emitting surface of the second lighting device is arranged in the first area;

[0010] A camera device, the camera device is installed in the tip body, the lens surface of the camera device is arranged in the first area, and the lens surface of the camera device is farther away from the second area than the light emitting surface of the first lighting device and the light emitting surface of the second lighting device;

[0011] in,

[0012] The light guiding axis of the first lighting device and the light guiding axis of the second lighting device are arranged asymmetrically around the imaging optical axis of the imaging device;

[0013] The lighting range of the first lighting device and the lighting range of the second lighting device form a joint lighting range, and the joint lighting range covers the camera range of the camera device.

[0014] Since the light guiding axes of the first lighting device and the second lighting device are arranged asymmetrically around the camera optical axis of the imaging device, and the lens surface of the imaging device is farther away from the second area than the light emitting surfaces of the first lighting device and the second lighting device, the joint illumination range formed by the first lighting device and the second lighting device covers the imaging range of the imaging device, so that the illumination field angle of the endoscope is sufficient to cover the field angle of the imaging device and the illumination area of ​​the endoscope completely covers the image display area, thereby ultimately avoiding the problem of large difference in brightness of the endoscopic image.

[0015] In some embodiments of the first technical solution, the light emitting surface of the first lighting device is closer to the second area than the light emitting surface of the second lighting device. The first lighting device and the second lighting device with different settings can increase the range of the lighting area.

[0016] In some embodiments of the first technical solution, the tip head body is provided with a first through hole for installing the first lighting device, a second through hole for installing the second lighting device, and a third through hole for installing the camera device; at one end adjacent to the first area, the end face of the third through hole is farther away from the second area than the end face of the second through hole, and the end face of the second through hole is farther away from the second area than the end face of the first through hole; at one end adjacent to the first area, the end face of the third through hole is flush with the lens surface of the camera device, the end face of the second through hole is flush with the light emitting surface of the second lighting device, and the end face of the first through hole is flush with the light emitting surface of the first lighting device. By the flush arrangement of the through holes and the devices, the problem of reduced lighting angle or camera angle is avoided.

[0017] In some embodiments of the first technical solution, the end outer wall of the first through hole is chamfered, the end outer wall of the second through hole is chamfered, and the end outer wall of the third through hole is chamfered. The chamfered arrangement of multiple through holes can effectively reduce the adhesion of blood and sputum.

[0018] In some embodiments of the first technical solution, the distance between the light guide axis of the first lighting device and the camera optical axis of the camera device is greater than the distance between the light guide axis of the second lighting device and the camera optical axis of the camera device. The difference in distances between the second lighting device and the first lighting device from the photographic device can effectively increase the lighting range.

[0019] In some embodiments of the first technical solution, along the direction adjacent to the first area, the first lighting device includes a first light guide light and a first light guide glass in sequence; along the direction adjacent to the first area, the second lighting device includes a second light guide light and a second light guide glass in sequence; the distance between the first light guide glass and the first light guide light is smaller than the distance between the second light guide glass and the second light guide light, and the different settings of the distance between the light guide glass and the light guide light make the lighting range of the first lighting device larger than the lighting range of the second lighting device.

[0020] In some embodiments of the first technical solution, the first light-guiding glass slide is a plano-convex lens, and the curved surface of the first light-guiding glass slide is arranged adjacent to the first light-guiding beam; the second light-guiding glass slide is a plano-convex lens, and the curved surface of the second light-guiding glass slide is arranged adjacent to the second light-guiding beam, and the refractive index of the curved surface of the plano-convex lens is 1.52 to 1.54. Through the arrangement and optical parameters of the plano-convex lenses, the viewing angle of the lighting device can be made larger, thereby better covering the range of the camera device.

[0021] In some embodiments of the first technical solution, it also includes a clamp channel; the clamp channel runs through both ends of the tip head body, the axis of the clamp channel is parallel to the camera optical axis of the camera device, and the clamp channel is provided to allow the endoscope clamp body to pass through, thereby providing a variety of practical scenarios for the endoscope.

[0022] In some embodiments of the first technical solution, a water vapor nozzle is further included; the water vapor nozzle is installed on the first area, the water vapor nozzle is aimed at the camera device, and the setting of the water vapor nozzle can clean the lens of the camera device to prevent it from being blocked by dirt.

[0023] The second technical solution, the utility model provides an endoscope, which applies the tip described in the first technical solution. With this tip, the light source of the endoscope has sufficient illumination, the illumination field angle of the endoscope is sufficient to cover the field angle of the camera device, and the illumination area of ​​the endoscope completely covers the image display area, which can effectively avoid the problem of large difference in light and dark illumination of the endoscopic image.

[0024] The more prominent beneficial effects of the utility model are as follows:

[0025] Since the light guiding axes of the first lighting device and the second lighting device are arranged asymmetrically around the camera optical axis of the camera device, the joint lighting range formed by the first lighting device and the second lighting device becomes larger, and since the lens surface of the camera device is farther away from the second area than the light emitting surfaces of the first lighting device and the second lighting device, that is, the light emitting surface and the lens surface are arranged with a height difference, the joint lighting range formed by the first lighting device and the second lighting device can be further enlarged to achieve the joint lighting range covering the camera range of the camera device, so that the light source illumination of the endoscope is sufficient, the illumination field angle of the endoscope is sufficient to cover the field angle of the camera device, and the illumination area of ​​the endoscope completely covers the image display area, which can ultimately avoid the problem of large difference in light and dark illumination of the endoscopic image. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a reference schematic diagram of the prior art structure given by the utility model;

[0028] Figure 2 It is a reference schematic diagram of the illumination range of the prior art provided by the utility model;

[0029] Figure 3 It is a reference schematic diagram of the illumination range provided by the preferred embodiment of the utility model;

[0030] Figure 4 It is a schematic diagram of the overall structure provided by the preferred embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the overall structure section provided by the preferred embodiment of the utility model Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the overall structure section provided by the preferred embodiment of the utility model Figure 2 ;

[0033] Figure 7 It is a schematic diagram of endoscope application provided by the preferred embodiment of the utility model;

[0034] Figure 8 It is a table diagram of the illumination uniformity test provided by the preferred embodiment of the utility model;

[0035] Fig. 9It is the light intensity diagram of the light source at the forefront of the prior art;

[0036] Fig.10 It is a light intensity diagram of the tip light source provided by the preferred embodiment of the utility model;

[0037] Fig.11 It is the illumination diagram of the light source at the forefront of the prior art;

[0038] Fig.12 This is the illumination diagram of the tip light source provided by the preferred embodiment of the utility model;

[0039] Fig.13 It is the light distribution curve diagram of the advanced light source in the prior art;

[0040] Fig.14 It is a light source light distribution curve diagram provided by the preferred embodiment of the utility model.

[0041] The reference numerals are as follows:

[0042] a. Existing lighting device; a1. Existing glass slide; a2. Existing light guide axis; b. Existing shooting device;

[0043] 1. Tip body; 10. First area; 11. Second area; 12. First through hole; 13. Second through hole; 14. Third through hole; 15. Chamfer;

[0044] 2. a first lighting device; 20. a first light guide beam; 21. a first light guide glass;

[0045] 3. A second lighting device; 30. A second light guide beam; 31. A second light guide glass;

[0046] 4. Camera device; 40. Camera slide; 5. Clamp channel; 6. Water vapor nozzle; 7. Illumination range; 8. Camera range;

[0047] Ⅰ. Endoscope operating part; Ⅱ. Endoscope bending part; Ⅲ. Tip; Ⅳ. Image processor; Ⅴ. Cold light source; Ⅵ. Display. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0049] Prior art comparative example

[0050] This application provides a comparative example of the prior art, such as Figure 1 and Figure 2 As shown, the biggest difference between it and the first embodiment is that its combined lighting range 7 cannot cover the camera range 8 of the camera device 4 .

[0051] The specific differences are as follows: 1. the existing light guide axis a2 of the existing shooting device b is arranged symmetrically around the axis of the camera device 4; 2. the existing lighting device a and the existing shooting device b are arranged coplanarly; 3. the specific selection of the existing glass slide a1 in the existing lighting device a and the selection of the distance between the existing glass slide a1 and the existing light guide beam are different from those of the present solution. After adopting this setting method, the combined lighting range 7 of the prior art cannot cover the camera range 8 of the camera device. Therefore, the light source illumination is insufficient, the illumination field angle of the endoscope cannot cover the field angle of the camera device, and the illumination area of ​​the endoscope cannot cover the image display area, resulting in a large difference in brightness of the endoscopic image.

[0052] Summarizing the existing technology, there are two major problems: one is the large difference in light and dark illumination of the endoscopic image; the other is the problem that the tip is easily stained with blood and sputum and is difficult to clean.

[0053] Embodiment 1

[0054] In order to solve the above problems, the utility model provides a tip, please refer to Figures 3 to 14 , comprising: a tip body 1, a first lighting device 2, a second lighting device 3 and a camera device 4; the tip body 1 comprises a first area 10 and a second area 11, the first area 10 and the second area 11 are respectively arranged at two ends of the tip; the first lighting device 2 is installed in the tip body 1, and the light emitting surface of the first lighting device 2 is arranged in the first area 10; the second lighting device 3 is installed in the tip body 1, and the light emitting surface of the second lighting device 3 is arranged in the first area 10; the camera device 4 is installed in the tip body 1, and the lens surface of the camera device 4 is arranged in the first area 10, and the lens surface of the camera device 4 is farther away from the second area 11 than the light emitting surfaces of the first lighting device 2 and the second lighting device 3; wherein the light guide axis of the first lighting device 2 and the light guide axis of the second lighting device 3 are arranged asymmetrically around the camera optical axis of the camera device 4; the lighting range 7 of the first lighting device 2 and the lighting range 7 of the second lighting device 3 form a joint lighting range 7, and the joint lighting range 7 covers the camera range 8 of the camera device 4.

[0055] After adopting the above arrangement, since the light guide axes of the first lighting device 2 and the second lighting device 3 are asymmetrically arranged around the imaging optical axis of the camera device 4, and the lens plane of the camera device 4 is farther away from the second area 11 than the light exit surfaces of the first lighting device 2 and the second lighting device 3, the camera device 4, the first lighting device 2 and the second lighting device 3 are not coplanar, so the joint lighting range 7 formed by the first lighting device 2 and the second lighting device 3 covers the imaging range 8 of the camera device 4. Compared with the symmetrical and coplanar arrangement of the camera device 4 and the lighting device in the prior art, as shown in FIG. Figure 3As shown, this solution can make the illumination field angle of the endoscope sufficient to cover the field angle of the camera 4 and the illumination area of ​​the endoscope completely cover the image display area, ultimately avoiding the problem of large difference in brightness of the endoscopic image.

[0056] like Figure 3 and Figure 5 As shown, in order to expand the size of the joint illumination range 7 formed by the first illumination device 2 and the second illumination device 3, the light emitting surface of the first illumination device 2 is closer to the second area 11 than the light emitting surface of the second illumination device 3, and the light emitting surface of the first illumination device 2 is farther away from the lens surface of the camera device 4 than the light emitting surface of the second illumination device 3. The illumination range 7 of the first illumination device 2 and the illumination range 7 of the second illumination are different in the longitudinal direction, as shown in FIG. Figure 5 As shown in L2 and L3, the illumination area is enlarged, and because the first illumination device 2, the second illumination device 3 and the camera device 4 are not coplanar, the tip can be prevented from being easily stained with blood or sputum and difficult to clean.

[0057] Further, such as Figure 3 and Figure 5 As shown, in order to further increase the combined lighting range 7, the distance between the light guide axis of the first lighting device 2 and the camera optical axis of the camera device 4 is greater than the distance between the light guide axis of the second lighting device 3 and the camera optical axis of the camera device 4. Compared with the prior art in which the second lighting device 3 and the first lighting device 2 are symmetrically arranged around the camera device 4, the difference in the distance between the second lighting device 3 and the first lighting device 2 from the photographic device in this scheme increases the lateral distance between the optical axis center of the first lighting device 2 and the optical axis center of the second lighting device 3, which can effectively increase the lighting range 7.

[0058] After the first lighting device 2 and the second lighting device 3 are arranged in the above manner, since there is a distance difference between the first lighting device 2 and the second lighting device 3 relative to the camera device 4 in the longitudinal and lateral directions, the joint lighting range 7 formed by the first lighting device 2 and the second lighting device 3 is effectively expanded to cover the camera range 8 of the camera device 4.

[0059] like Figure 4 As shown, the first lighting device 2, the second lighting device 3 and the camera device 4 are all installed on the front end, wherein the light emitting surface of the first lighting device 2, the light emitting surface of the second lighting device 3 and the lens surface of the camera device 4 are all arranged in the first area 10.

[0060] Specifically, the installation structure of the first lighting device 2, the second lighting device 3 and the camera device 4 on the tip head is as follows: the tip head body 1 is provided with a first through hole 12 for installing the first lighting device 2, a second through hole 13 for installing the second lighting device 3 and a third through hole 14 for installing the camera device 4; at one end adjacent to the first area 10, the end face of the third through hole 14 is farther away from the second area 11 than the end face of the second through hole 13, and the end face of the second through hole 13 is farther away from the second area 11 than the end face of the first through hole 12; at one end adjacent to the first area 10, the end face of the third through hole 14 is flush with the lens surface of the camera device 4, the end face of the second through hole 13 is flush with the light emitting surface of the second lighting device 3, and the end face of the first through hole 12 is flush with the light emitting surface of the first lighting device 2.

[0061] After adopting this setting method, the first lighting device 2, the second lighting device 3 and the camera device 4 can all be installed on the tip, and the setting that the light-emitting surface of the first lighting device 2 is flush with the end face of the first through hole 12 can avoid the viewing angle of the first lighting device 2 being partially blocked by the through hole. The light-emitting surface of the second lighting device 3 is flush with the end face of the second through hole 13, and the lens surface of the camera device 4 is flush with the end face of the third through hole 14. The purpose is the same.

[0062] Further, such as Figure 5 As shown, in order to reduce the adhesion of blood and sputum on the tip, the end outer wall of the first through hole 12 is chamfered 5, the end outer wall of the second through hole 13 is chamfered 5, and the end outer wall of the third through hole 14 is chamfered 5. After adopting this setting, multiple through holes are provided with chamfers 5, which can effectively reduce the adhesion of blood and sputum.

[0063] Regarding the structure of the first lighting device 2, Figure 5 As shown, the first lighting device 2 includes a first light guide beam 20 and a first light guide glass 21. The first light guide beam 20 and the first light guide glass 21 are arranged in sequence in the first through hole 12 along the direction adjacent to the first area 10. It should be pointed out that the light emitting surface of the first lighting device 2 refers to the plane side of the first light guide glass 21.

[0064] Specifically, the first light guide glass 21 is a plano-convex lens, and the arc surface of the first light guide glass 21 is arranged adjacent to the first light guide beam 20. The refractive index of the arc surface of the plano-convex lens is preferably 1.53. Compared with the prior art using a flat lens, the plano-convex lens in this solution has a larger viewing angle and better effect. Figure 3 .

[0065] Regarding the structure of the second lighting device 3, Figure 5As shown, the second lighting device 3 includes a second light guide beam 30 and a second light guide glass 31. The second light guide beam 30 and the second light guide glass 31 are arranged in sequence in the second through hole 13 along the direction adjacent to the second area 11. It should be pointed out that the light emitting surface of the first lighting device 2 refers to the plane side of the first light guide glass 21.

[0066] Specifically, the second light guide glass 31 is a plano-convex lens, and the arc surface of the second light guide glass 31 is arranged adjacent to the second light guide beam 30. The refractive index of the arc surface of the plano-convex lens is preferably 1.53. Compared with the prior art using a flat lens, the plano-convex lens in this solution has a larger viewing angle and better effect, which can be seen in Figure 3 .

[0067] It should be pointed out that the light emitting surface of the second lighting device 3 refers to the plane side of the second light guide glass 31 .

[0068] The distance between the first light guide glass 21 and the first light guide light 20 is smaller than the distance between the second light guide glass 31 and the second light guide light 30. The different distances between the light guide glass and the light guide light make the illumination range 7 of the first illumination device 2 larger than the illumination range 7 of the second illumination device 3. Figure 3 As shown, the longitudinal range of the illumination range 7 of the first illumination device 2 is larger than the illumination range 7 of the second illumination device 3 .

[0069] Regarding the structure of the camera device 4, Figure 5 As shown, the camera device 4 includes an image sensor objective lens group and an objective lens glass 40, which are arranged in sequence in the third through hole 14 along a direction adjacent to the first area 10. It should be pointed out that the lens surface of the camera device 4 refers to a side of the objective lens glass away from the image sensor objective lens group.

[0070] like Figure 4 and Figure 5 As shown, in order to enable the forceps body to pass in and out, the tip end also includes a forceps channel 5; the forceps channel 5 runs through both ends of the tip end main body 1, and the axis of the forceps channel 5 is parallel to the camera optical axis of the camera device 4. The setting of the forceps channel 5 allows the endoscope forceps body to pass in and out, which can provide a variety of practical scenarios for the endoscope.

[0071] Furthermore, due to the structural coordination among the first lighting device 2, the second lighting device 3 and the camera device 4 in the present solution, even if the opening of the tip clamp 5 is enlarged and the light guide is brought closer to the camera assembly, it will not lead to differences in brightness among the various camera surfaces on the monitor screen and will not affect the image quality.

[0072] like Figure 4 and Figure 5As shown, in order to clean the lens of the camera device 4, the front end also includes a water vapor nozzle 6; the water vapor nozzle 6 is installed on the first area 10, and the water vapor nozzle 6 is aimed at the camera device 4. The setting of the water vapor nozzle 6 can clean the lens of the camera device 4 to prevent it from being blocked by dirt.

[0073] In order to better illustrate the effect of this solution, the following will be combined with Example 1 and a comparative example for joint description.

[0074] like Figure 8 As shown, Figure 8 This is a test table for light uniformity. From the table data, it can be seen that the light source of the structure of the present application has a wider light emission range. The light source of the prior art is concentrated in the center (there is no illumination at 90 degrees on both sides), and the light source of the present application not only has a wider illumination range, but also has better light uniformity, and the illumination gradient diffuses outward more smoothly.

[0075] like Fig. 9 and Fig.10 As shown, Fig. 9 This is the illumination diagram of the advanced light source in the prior art. Fig.10 The illumination diagram of the tip light source of the first embodiment is used. As can be seen from the figure, the illumination of the light source in the prior art is not sufficient and it is difficult to cover the entire image display area, which easily leads to a large difference in the brightness of the endoscopic image. However, the illumination of the light source of the first embodiment in the present scheme is sufficient, the illumination field angle of the endoscope is sufficient to cover the field angle of the camera 4, and the illumination area of ​​the endoscope completely covers the image display area, which can effectively avoid the problem of large difference in the brightness of the endoscopic image.

[0076] like Fig.11 and Fig.12 As shown, Fig.11 This is the light intensity diagram of the advanced light source in the prior art. Fig.12 This is a diagram of the light intensity of the tip light source of the first embodiment. It can be seen from the figure that the light intensity of the light source in the prior art is obviously weak, while the light intensity of the light source of the first embodiment of the present solution is higher and can meet the demand of covering the image display area.

[0077] like Fig.13 and Fig.14 As shown, Fig.13 This is the light distribution curve of the advanced light source in the existing technology. Fig.14 This is a light distribution curve diagram of the front-end light source of the first embodiment. It can be seen from the figure that the light distribution curve in the prior art is obviously inferior to the light distribution curve in the first embodiment, which reflects that the light intensity distribution of the first embodiment in all directions in space is better.

[0078] It should be pointed out that in the above figure, the redder the color, the better the effect, and the bluer the color, the worse the effect.

[0079] Embodiment 2

[0080] The second embodiment of the present application provides an endoscope, the most significant feature of which is the application of the tip in the first embodiment, please refer to Figure 7 .

[0081] Specifically, the endoscope includes an endoscope operating part I, an endoscope bending part II and a tip III of the first embodiment, the endoscope operating part is connected to one end of the endoscope bending part, and the other end of the endoscope bending part is connected to the tip. After adopting this setting method, the endoscope equipped with the above-mentioned tip can achieve sufficient light illumination of the light source of the endoscope, the illumination field angle of the endoscope is sufficient to cover the field angle of the camera device 4, and the illumination area of ​​the endoscope completely covers the image display area, which can effectively avoid the problem of large difference in brightness of the endoscopic image.

[0082] In some specific application scenarios, the endoscope is also electrically connected to an image processor IV, a cold light source V, a display VI and other devices, and the operator can observe the patient's surgical status in real time through the display.

[0083] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A tip, characterized in that: include: A tip body, the tip body comprising a first area and a second area, the first area and the second area are respectively arranged at two ends of the tip; A first lighting device, the first lighting device is installed in the tip body, and the light emitting surface of the first lighting device is arranged in the first area; A second lighting device, the second lighting device is installed in the tip body, and the light emitting surface of the second lighting device is arranged in the first area; A camera device, the camera device is installed in the tip body, the lens surface of the camera device is arranged in the first area, and the lens surface of the camera device is farther away from the second area than the light emitting surface of the first lighting device and the light emitting surface of the second lighting device; in, The light guiding axis of the first lighting device and the light guiding axis of the second lighting device are arranged asymmetrically around the imaging optical axis of the imaging device; The lighting range of the first lighting device and the lighting range of the second lighting device form a joint lighting range, and the joint lighting range covers the camera range of the camera device.

2. A tip according to claim 1, characterized in that: The light emitting surface of the first lighting device is closer to the second area than the light emitting surface of the second lighting device.

3. A tip according to claim 2, characterized in that: The tip body is provided with a first through hole for installing the first lighting device, a second through hole for installing the second lighting device, and a third through hole for installing the camera device; At one end adjacent to the first region, an end surface of the third through hole is further away from the second region than an end surface of the second through hole, and an end surface of the second through hole is further away from the second region than an end surface of the first through hole; At one end adjacent to the first area, the end face of the third through hole is flush with the lens surface of the camera device, the end face of the second through hole is flush with the light emitting surface of the second lighting device, and the end face of the first through hole is flush with the light emitting surface of the first lighting device.

4. A tip according to claim 3, characterized in that: The outer wall of the end of the first through hole is chamfered, the outer wall of the end of the second through hole is chamfered, and the outer wall of the end of the third through hole is chamfered.

5. A tip according to claim 1, characterized in that: The distance between the light guide axis of the first lighting device and the imaging optical axis of the imaging device is greater than the distance between the light guide axis of the second lighting device and the imaging optical axis of the imaging device.

6. A tip according to claim 1, characterized in that: Along the direction adjacent to the first area, the first lighting device sequentially comprises a first light guide beam and a first light guide glass; Along the direction adjacent to the first area, the second lighting device comprises a second light guide beam and a second light guide glass in sequence; The distance between the first light guiding glass and the first light guiding beam is smaller than the distance between the second light guiding glass and the second light guiding beam.

7. A tip according to claim 6, characterized in that: The first light guide glass is a plano-convex lens, and the arc surface of the first light guide glass is arranged adjacent to the first light guide beam; The second light guide glass is a plano-convex lens, and the arc surface of the second light guide glass is arranged adjacent to the second light guide beam.

8. The tip according to claim 1, characterized in that: Also includes a clamp channel; The clamp channel passes through two ends of the tip head body, and the axis of the clamp channel is parallel to the imaging optical axis of the imaging device.

9. The tip according to claim 1, characterized in that: Also included is a water vapor nozzle; The water vapor nozzle is installed on the first area, and the water vapor nozzle is aimed at the camera device.

10. An endoscope, characterized in that: The tip described in any one of claim 9 is applied to claim 1.

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