CN216754410U

CN216754410U - Cold light source light path structure and endoscope system

Info

Publication number: CN216754410U
Application number: CN202122594554.7U
Authority: CN
Inventors: 孙宇; 周健; 袁谋堃; 邓安鹏
Original assignee: Chongqing Jinshan Medical Technology Research Institute Co Ltd
Current assignee: Chongqing Jinshan Medical Technology Research Institute Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-06-17
Anticipated expiration: 2031-10-27

Abstract

The utility model relates to the technical field of endoscopes, in particular to a cold light source light path structure and an endoscope system. The utility model discloses a cold light source optical path structure, which comprises a light guide part, wherein the light guide part comprises a connector, a light guide rod is connected in the connector in a floating manner, the end part of the light guide rod is butted with a light emitting lens component, and a positioning ring matched with the light guide rod is arranged on the light emitting lens component. The utility model aims to solve the problem of developing a cold light source optical path structure without deviation of optical axes output by a light guide rod and an optical path component in a cold light source.

Description

Cold light source light path structure and endoscope system

Technical Field

The utility model relates to the technical field of endoscopes, in particular to a cold light source light path structure and an endoscope system.

Background

In an endoscope system widely used in the medical field, an endoscope light guide portion is inserted into a main body to constitute an endoscope body connecting structure. The connecting structure realizes the function of providing illumination light for the mirror body by the cold light source, and requires the cold light source to provide illumination light for the mirror body stably for a long time, namely, the luminous flux attenuation output by the cold light source is reduced. However, after the existing cold light source optical path structure is used for a long time, dust is easily accumulated on the light combining sheet and the lens, so that the light output quantity is reduced, the illumination light at the lens end is darkened, and the use is influenced; in addition, after the cold light source is inserted into the light guide part, the light guide rod and the axis of the light output by the light path component in the cold light source are deviated, so that the attenuation of the luminous flux is large.

Therefore, those skilled in the art have made efforts to develop a cold light source optical path structure in which the optical axes of the light output from the light guide rod and the optical path components in the cold light source are not deviated.

SUMMERY OF THE UTILITY MODEL

In view of the above defects in the prior art, the present invention discloses a cold light source optical path structure and an endoscope system, and aims to solve the technical problem of developing a cold light source optical path structure with no deviation of optical axes output by optical path components in a light guide rod and a cold light source.

In order to achieve the purpose, the utility model provides a cold light source light path structure, which comprises a light guide part, wherein the light guide part comprises a connector, a light guide rod is connected in the connector in a floating manner, the end part of the light guide rod is butted with a light emitting lens assembly, and a positioning ring matched with the light guide rod is arranged on the light emitting lens assembly.

Preferably, the positioning ring comprises a second guide hole matched with the light guide rod, a tapered guide hole is formed in the top of the second guide hole, and the tapered guide hole plays a role in guiding the light guide rod. And the bottom of the second guide hole is provided with a limiting plane, and the front end surface of the light guide rod is abutted against the limiting plane to perform accurate axial positioning so as to limit the axial position of the light guide rod.

Preferably, an annular elastic body is arranged between the connector and the light guide rod to form floating connection between the light guide rod and the connector.

Preferably, a connecting assembly is arranged between the light guide part and the light emitting lens assembly, and an installation cavity for installing the connector and the light guide rod is arranged in the connecting assembly.

Preferably, the installation cavity includes consecutive first guiding hole, toper guiding hole and connecting hole, first guiding hole with leaded light pole clearance fit, install in the connecting hole the connector. The guide rod penetrates into the first guide hole through the guide limit of the conical guide hole, and the first guide hole plays a primary limiting role in the position of the guide rod. The first guide hole and the second guide hole are coaxial, the diameter of the first guide hole is larger than that of the second guide hole, and then the second guide hole is used for accurate position limiting, so that the purpose that the optical axes of the light guide rod and the cold light source are coaxial is achieved.

Preferably, an annular clamping groove is formed in the connecting hole, an annular groove is formed in the connector, an elastic clamping ring corresponding to the annular clamping groove is clamped in the annular groove, the elastic clamping ring deforms to abut against the annular clamping groove, and a holding force is provided to ensure tight connection between the light guide part and the cold light source.

Preferably, the light path structure of the cold light source disclosed by the utility model further comprises a base, wherein the base is provided with a first optical assembly, a second optical assembly and a light combining plate assembly, the light combining plate assembly is positioned in the three-side enclosure of the first optical assembly, the second optical assembly and the light outlet lens assembly, and the connecting assembly is mounted on the base.

Preferably, a dust cover is arranged on the base, and the first optical assembly, the second optical assembly, the light combining assembly and the light emitting lens assembly are all located in the dust cover. The dust cover can prevent that the dust from piling up on closing light piece and lens, can guarantee simultaneously that the light guide part inserts the cold light source after, the axiality that the light path is connected is high.

Preferably, the dust cover includes first dust guard, second dust guard, third dust guard, fourth dust guard and fifth dust guard, first dust guard, second dust guard, third dust guard, fourth dust guard and fifth dust guard surround into the cuboid.

The utility model also discloses an endoscope system which comprises the cold light source light path structure.

The utility model has the beneficial effects that:

the end part of the light guide rod is limited by the positioning ring, so that the light guide rod and the optical axis output by the optical path component in the cold light source are ensured to be positioned on the same axis, the coaxiality of the light guide rod and the optical axis is ensured, and the attenuation of luminous flux is reduced. Meanwhile, the light guide rod is connected with the connector in a floating mode, so that the deviation adjusting effect is achieved, and the coaxiality of the light axes of the light guide rod and the cold light source can be better guaranteed.

Drawings

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

FIG. 3 is an enlarged partial view of FIG. 1 without the light directing portion at A;

FIG. 4 is a schematic diagram of the internal structure of the host of the present invention;

FIG. 5 is a schematic diagram of the internal structure of the host of the present invention;

fig. 6 is a schematic configuration diagram of the endoscope of the present invention.

In the above drawings: 10. a cold light source; 101. a base; 102. a first optical assembly; 103. a second optical component; 104. a light combination sheet assembly; 105. a light-emitting lens assembly; 1051. a second guide hole; 1052. a limiting plane; 1053. a tapered lead-in hole; 1054. a positioning ring; 106. a connecting assembly; 1061. a first guide hole; 1062. a tapered guide hole; 1063. connecting holes; 1064. an annular clamp groove; 1065. a mounting cavity; 107. a dust cover; 20. a light guide part; 201. an annular elastomer; 202. a light guide rod; 203. an elastic snap ring; 204. a connecting head.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 3, the present invention provides a cold light source optical path structure, which includes a light guide portion 20, the light guide portion 20 includes a connector 204, a light guide rod 202 is connected in the connector 204 in a floating manner, an end of the light guide rod 202 is in butt joint with a light emitting lens assembly 105, and a positioning ring 1054 matched with the light guide rod 202 is arranged on the light emitting lens assembly 105.

In this embodiment, the positioning ring 1054 limits the position of the end of the light guiding rod 202, i.e. it is ensured that the optical axes of the light guiding rod 202 and the optical path components in the cold light source 10 are on the same axis, the coaxiality of the two is ensured, and the attenuation of the light flux is reduced. Meanwhile, the floating connection between the light guide rod 202 and the connector 204 plays a role in adjusting deviation, and can better ensure the coaxiality of the light axes of the light guide rod 202 and the cold light source 10.

As shown in fig. 3, the positioning ring 1054 includes a second guiding hole 1051 engaged with the light guiding rod 202, and a tapered guiding hole 1053 is provided at the top of the second guiding hole 1051, and the tapered guiding hole 1053 guides the light guiding rod 202. The bottom of the second guiding hole 1051 is provided with a limiting plane 1052, and the front end surface of the light guiding rod 202 abuts against the limiting plane 1052 to perform precise axial positioning, so as to limit the axial position of the light guiding rod 202. As shown in fig. 1 to 3, a connection assembly 106 is disposed between the light guide portion 20 and the light-emitting lens assembly 105, and an installation cavity 1065 for installing the connector 204 and the light guide rod 202 is disposed in the connection assembly 106. The installation cavity 1065 includes a first guide hole 1061, a tapered guide hole 1062 and a connection hole 1063 connected in sequence, the first guide hole 1061 is in clearance fit with the light guide rod 202, and the connection head 204 is installed in the connection hole 1063. The light guide rod 202 penetrates into the first guide hole 1061 through the guide limit of the tapered guide hole 1062, and the first guide hole 1061 plays a primary role in limiting the position of the light guide rod 202. The first guide hole 1061 and the second guide hole 1051 are coaxial, and the diameter of the first guide hole 1061 is greater than that of the second guide hole 1051, and then the second guide hole 1051 performs more accurate position limitation, so as to achieve the purpose of coaxial optical axes of the light guide rod 202 and the cold light source 10. In addition, an annular elastic body 201 is arranged between the connecting head 204 and the light guide rod 202 to form a floating connection between the light guide rod 202 and the connecting head 204. An annular clamping groove 1064 is formed in the connecting hole 1063, an annular groove is formed in the connecting head 204, an elastic snap ring 203 corresponding to the annular clamping groove 1064 is clamped in the annular groove, and the elastic snap ring 203 deforms to abut against the annular clamping groove 1064.

In this embodiment, when the connector 204 is inserted into the cold light source 10, the light guide rod 202 is first pre-positioned through the first guide hole 1061 and then precisely positioned radially to the second guide hole 1051. When the insertion process of the light guide rod 202 is completed, the front end surface of the light guide rod 202 abuts against the limit plane 1052 for precise axial positioning, and at this time, the elastic body is compressed to provide a rebound force to ensure that the light guide rod 202 abuts against the second guide hole 1051 and the limit plane 1052 at the same time. Meanwhile, the elastic snap ring 203 deforms to abut against the annular groove 1064, and provides a holding force to ensure tight connection between the light guide part 20 and the cold light source 10.

As shown in fig. 4 and 5, the light path structure of a cold light source disclosed in the present invention further includes a base 101, the base 101 is provided with a first optical component 102, a second optical component 103 and a light combining component 104, the light combining component 104 is located in three-side enclosure of the first optical component 102, the second optical component 103 and the light emitting lens component 105, and the base 101 is provided with a connecting component 106. Further, a dust cover 107 is arranged on the base 101, the dust cover 107 comprises a first dust cover, a second dust cover, a third dust cover, a fourth dust cover and a fifth dust cover, and the first dust cover, the second dust cover, the third dust cover, the fourth dust cover and the fifth dust cover surround to form a cuboid. The first optical assembly 102, the second optical assembly 103, the light combining assembly 104, and the light emitting lens assembly 105 are all located within the dust cover 107. The dust cover 107 can prevent dust from accumulating on the light combining sheet and the lens, and can ensure high coaxiality of optical path connection after the light guide 20 is inserted into the cold light source 10.

As shown in FIG. 6, the utility model also discloses an endoscope system, which comprises the above cold light source optical path structure.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the above teachings. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A cold light source light path structure is characterized in that: including leading light portion (20), lead light portion (20) including connector (204), floating connection has lead light pole (202) in connector (204), the tip of leading light pole (202) is to having a light-emitting lens subassembly (105), be equipped with on the light-emitting lens subassembly (105) with lead light pole (202) complex holding ring (1054).

2. The cold light source optical path structure of claim 1, wherein: the positioning ring (1054) comprises a second guide hole (1051) matched with the light guide rod (202), the top of the second guide hole (1051) is provided with a conical guide hole (1053), and the bottom of the second guide hole (1051) is provided with a limit plane (1052).

3. The cold light source optical path structure of claim 2, wherein: an annular elastic body (201) is arranged between the connecting head (204) and the light guide rod (202).

4. A cold light source optical path structure as claimed in claim 3, wherein: a connecting component (106) is arranged between the light guide part (20) and the light emergent lens component (105), and a mounting cavity (1065) for mounting the connector (204) and the light guide rod (202) is arranged in the connecting component (106).

5. The cold light source optical path structure of claim 4, wherein: the mounting cavity (1065) comprises a first guide hole (1061), a conical guide hole (1062) and a connecting hole (1063) which are sequentially connected, the first guide hole (1061) is in clearance fit with the light guide rod (202), and the connecting head (204) is mounted in the connecting hole (1063).

6. The cold light source optical path structure of claim 5, wherein: be equipped with ring groove (1064) in connecting hole (1063), be equipped with the annular groove on connector (204), the annular groove inside callipers be equipped with snap ring (203) that ring groove (1064) correspond.

7. The cold light source optical path structure of any one of claims 4 to 6, wherein: still include base (101), be equipped with first optical assembly (102), second optical assembly (103) and close optical assembly (104) on base (101), it is located to close optical assembly (104) in the trilateral of first optical assembly (102), second optical assembly (103) and light-emitting lens subassembly (105) surround, install on base (101) connecting component (106).

8. The cold light source optical path structure of claim 7, wherein: the base (101) is provided with a dust cover (107), and the first optical assembly (102), the second optical assembly (103), the light combining assembly (104) and the light emitting lens assembly (105) are all located in the dust cover (107).

9. The cold light source optical path structure of claim 8, wherein: the dust cover (107) comprises a first dust guard, a second dust guard, a third dust guard, a fourth dust guard and a fifth dust guard, wherein the first dust guard, the second dust guard, the third dust guard, the fourth dust guard and the fifth dust guard surround to form a cuboid.

10. An endoscopic system characterized by: the light path structure of the cold light source comprises any one of claims 1 to 9.