CN218158562U

CN218158562U - Endoscope light-guiding structure

Info

Publication number: CN218158562U
Application number: CN202222121919.9U
Authority: CN
Inventors: 赵永标; 马晓龙
Original assignee: Sichuan Naite Photoelectric Technology Co ltd
Current assignee: Sichuan Naite Photoelectric Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-12-27
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses an endoscope light-directing structure, which comprises an outer shell, shell one side is provided with the opening, the inside LED cold light source that is provided with of shell, the luminous end of LED cold light source is just to condensing lens's condensing surface, and condensing lens's light emitting area is just to plastics optic fibre one end, the plastics optic fibre other end stretches out the opening of shell and passes the insert tube and be connected with the first end, the first end other end is connected with luminescent lens, and this scheme adopts dual lens structure, and the light that sends LED cold light source earlier is gathered the back through the lens spotlight structure of purpose-built mirror surface, sends by the lens light-emitting structure of purpose-built mirror surface again, improves light conduction efficiency.

Description

Endoscope light guide structure

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an endoscope light-directing structure.

Background

The electronic endoscope is widely applied in the medical field, the industrial field and the military field, the electronic endoscope has the condition that the electronic endoscope needs to enter a no-light area for peeping when being used in the medical field, a light source needs to be arranged in the electronic endoscope when the medical endoscope is applied to peeping internal organs of a human body of a patient at present, the light source is transmitted out through the electronic endoscope, the existing electronic endoscope is provided with built-in optical fiber illumination, the built-in optical fiber illumination can be divided into glass optical fiber illumination and plastic optical fiber illumination, wherein the glass optical fiber illumination has higher light transmission efficiency, but pollutes the environment and can generate harmful substances in the manufacturing process, so the cost is higher; the plastic optical fiber has smaller illumination bending radius, relatively better manufacturing and processing environment, no harm to the environment and human bodies, but relatively low light transmission efficiency in the electronic endoscope.

Disclosure of Invention

For solving the problem that the light source in the electronic endoscope has low light transmission efficiency and high production cost, the utility model provides an endoscope light guide structure.

The utility model discloses a following technical scheme realizes:

the endoscope light guide structure comprises a shell and is characterized in that an opening is formed in one side of the shell, an LED cold light source is arranged in the shell, the light emitting end of the LED cold light source is opposite to the light condensing surface of a condensing lens, the light emitting surface of the condensing lens is opposite to one end of a plastic optical fiber, the other end of the plastic optical fiber extends out of the opening of the shell and penetrates through an insertion tube to be connected with one end of a tip, and the other end of the tip is connected with a light emitting lens.

Furthermore, the optical fiber connector further comprises an optical fiber clamping head structure, wherein the optical fiber clamping head structure is fixed at the opening of the shell in a step limiting installation mode.

Furthermore, the optical fiber chuck structure is a step conical structure, the small end of the step conical structure is inserted into the opening of the shell and is opposite to the light emitting surface of the condensing lens, the large end face of the step conical structure is fixed at the opening of the shell, and an optical fiber channel penetrates through the middle of the step conical structure.

Furthermore, the upper side and the lower side of the condensing lens are respectively connected with a first positioning piece and a second positioning piece, the first positioning piece is inserted into a groove at the bottom in the shell, and the second positioning piece is embedded into a sliding rail at the top in the shell.

Furthermore, the condensing surface of the condensing lens is a first convex mirror, the first convex mirror is opposite to the light emitting end of the LED cold light source, the light emitting surface of the condensing lens is a second convex mirror, the second convex mirror is opposite to the light inlet of the optical fiber channel, and the plastic optical fiber is inserted into the optical fiber channel.

Furthermore, the distance between the convex mirror of the condensing lens and the light inlet of the optical fiber channel is 0.5mm.

Furthermore, the condensing surface of the light-emitting lens is a first concave mirror, a first fixing block is arranged on one side of the first concave mirror, the light-emitting surface of the light-emitting lens is a second concave mirror, a second fixing block is arranged on one side of the second concave mirror, the positions of the first fixing block and the second fixing block are opposite, and the light-emitting lens is inserted into the groove at the end part of the tip through the first fixing block.

Furthermore, the maximum diameters of the convex surfaces of the first convex mirror and the second convex mirror of the condenser lens are both 10.056mm, the single-side convex thicknesses of the first convex mirror and the second convex mirror are both 1.75mm, and the total thickness of the condenser lens is 4.5mm; the maximum diameters of the concave surfaces of the first concave mirror and the second concave mirror of the light-emitting lens are both 2.435mm, the concave depths of the first convex mirror and the second convex mirror are both 0.45mm, and the total thickness of the light-emitting lens is 1.33mm.

The utility model has the advantages that:

(1) The utility model provides an endoscope light guide structure which adopts a plastic optical fiber lighting mode, wherein an optical fiber light inlet is provided with an LED lamp bead, and the front surface of the LED lamp bead is provided with a lens light-focusing structure, so that the light utilization rate of the LED is maximized;

(2) The first lens light-gathering structure of the endoscope light-guiding structure is arranged in the shell in a sliding manner, and the light-gathering effect can be improved by adjusting the distance between the first lens light-gathering structure and the LED through practical application scenes;

(3) The utility model provides an endoscope light guide structure, which arranges a first lens light gathering structure between an optical fiber and an LED, increases the distance between the optical fiber and the LED, and reduces the influence of the temperature generated by the LED on the end surface of a plastic optical fiber;

(4) The utility model provides a pair of endoscope light-directing structure sets up lens light emitting structure in optic fibre exit position, gathers certain angle with the light that optic fibre sent, makes the light-emitting more even.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a sectional view of an endoscope light guide structure according to the present invention;

fig. 2 is a schematic view of an optical fiber chuck of an endoscope light guide structure according to the present invention;

fig. 3 is a schematic view of a condensing lens of an endoscope light guide structure according to the present invention;

fig. 4 is a schematic view of a light emitting lens of an endoscope light guide structure according to the present invention;

in the figure, 1-LED cold light source, 2-shell, 3-optical fiber chuck, 4-optical fiber, 5-insertion tube, 6-first end, 7-lens light gathering structure and 8-lens light emitting structure.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example 1

Referring to fig. 1, an endoscope light guide structure comprises a plastic housing 2, a rectangular space is arranged inside the plastic housing 2, a slide rail capable of sliding horizontally is arranged at the top of the rectangular space, a slide groove capable of sliding horizontally is arranged at the bottom of the rectangular space, an opening is arranged at one side of the plastic housing 2, a part of the opening extends forwards, a fixing plate is arranged at one side inside the rectangular space, an LED cold light source 1 is inserted on the fixing plate, the LED cold light source 1 is an LED lamp bead, the center of the lamp bead of the LED cold light source 1 and the center of the mirror surface at one side of a lens light-gathering structure 7 are located on the same horizontal plane, the center of the mirror surface at the other side of the lens light-gathering structure 7 and the center of an optical fiber 4 are located on the same horizontal plane, the LED cold light source comprises an optical fiber 4, a lens condensing structure 7, an inserting tube 5, a fixing plate, a lens light-emitting structure 8, a plastic optical fiber 4, an LED cold light source 1, a lens condensing structure 7, a lens light-emitting structure 8, a space, a lens light-emitting structure 8 and a lens light-emitting structure 8, wherein one end, far away from the lens condensing structure 7, of the optical fiber 4 extends out of an opening of the plastic shell 2 and then penetrates through the inserting tube 5 to be connected with one end of the tip 6, the other end of the tip 6 is provided with the lens light-emitting structure 8, the optical fiber 4 is the plastic optical fiber 4, the LED cold light source 1 emits light rays to the lens condensing structure 7 after being fixed by the fixing plate, the light rays are polymerized, the light utilization rate of the light rays emitted by the LED cold light source 1 is made to be maximum, the LED cold light source 1 and the lens light-emitting structure 7 and the space is a condensing intersection point of a condensing lens.

Example 2

The present embodiment proposes a specific embodiment of an endoscope light guide structure based on embodiment 1.

Referring to fig. 2-4, an endoscope light guide structure further includes an optical fiber chuck 3 structure, the optical fiber chuck 3 structure is fixed at an opening of the plastic housing 2 by a step limiting installation mode, the optical fiber chuck 3 structure is a step conical structure, a small end of the step conical structure is inserted into the opening of the plastic housing 2 and is right opposite to the other side of the lens light focusing structure 7 after entering the rectangular space, a large end face of the step conical structure is fixed at the opening of the plastic housing 2, the large end of the step conical structure is cylindrical and is far away from the opening and provided with a light outlet, a small end of the step conical structure is far away from the opening and provided with a light inlet, an optical fiber channel penetrates through the middle of the step conical structure and is respectively communicated with the light outlet and the light inlet, a small end of the optical fiber chuck 3 is set to be an outwardly contracted structure so as to easily gather light, and the influence of temperature generated by the light source on the optical fiber 4 can also be reduced.

Further, lens condensing structure 7 includes collector lens, first setting element and second setting element, collector lens's both sides mirror surface is the convex mirror, and the two sides all are the convex mirror, can be in narrow and small space effectual refraction light, can gather a lot of light, when short distance spotlight, can be with the gathering that the light that the pointolite sent is as much as possible, first setting element is the rectangular plate body, and the thickness of first setting element rectangular plate body is the same with collector lens's mirror edge thickness, the one end of first setting element is connected on the mirror edge of collector lens bottom, the other end embedding spout of first setting element, and the width and the spout internal diameter of first setting element rectangular plate body equal, the second setting element has the rectangular plate body of breach for the top, the one end of second setting element is connected on the mirror edge at the collector lens top, and the other end of second setting element passes through breach and slide rail sliding connection, breach and slide rail adaptation, first setting element and second setting element follow collector lens's transverse axis symmetrical arrangement, lens structure 7 realize through first setting element and remove in the rectangular lens space with the horizontal mirror and the LED light source through the light source that the convex mirror moves 1.5 the LED light source and the LED light source goes into the convex mirror optical fiber light source through the LED light source, and the LED light source goes into the distance 1.5 and goes into the other side of the LED light source through the LED light source under the distance 1.5.

Further, lens light-emitting structure 8 includes emitting lens, first fixed block and second fixed block, emitting lens's both sides mirror surface is the concave mirror, and the two sides all are the concave mirror, can diverge the light beam that optic fibre 4 sent, increase luminous angle, the relative position department at emitting lens both sides concave mirror top is provided with first fixed block and second fixed block respectively, first fixed block and second fixed block are anomalous polygon block, wherein first fixed block is inserted and is bonded its and be used for fixing leading end 6 department with emitting lens by glue behind the draw-in groove of leading end 6 tip, the second fixed block is inserted and is bonded its and be used for connecting the structure of pulling by glue behind the draw-in groove of pulling the structure tip.

Specifically, the special structure of the condensing lens is that the maximum diameter of a convex surface is 10.056mm, the single-side protrusion thickness is 1.75mm, the total thickness is 4.5mm, and the condensing effect achieved by the size is optimal;

the special structure of the light-emitting lens is that the maximum diameter of a concave surface is 2.435mm, the depth of a single-side recess is 0.45mm, the total thickness is 1.33mm, the size is changed, the light-emitting angle can be increased, and the 90-degree light-emitting angle is met.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The endoscope light guide structure comprises a shell and is characterized in that an opening is formed in one side of the shell, an LED cold light source is arranged in the shell, the light emitting end of the LED cold light source is opposite to the light condensing surface of a condensing lens, the light emitting surface of the condensing lens is opposite to one end of a plastic optical fiber, the other end of the plastic optical fiber extends out of the opening of the shell and penetrates through an insertion tube to be connected with one end of a tip, and the other end of the tip is connected with a light emitting lens.

2. An endoscope light guide structure according to claim 1 and also comprising a fiber clamp structure, said fiber clamp structure being fixed to the opening of the housing by means of a stepped stop mounting.

3. An endoscope light guide structure according to claim 2, wherein the optical fiber chuck structure is a step-taper structure, the small end of the step-taper structure is inserted into the opening of the housing and faces the light emitting surface of the condensing lens, the large end of the step-taper structure is fixed at the opening of the housing, and an optical fiber channel penetrates through the step-taper structure.

4. An endoscope light guide structure according to claim 1, wherein the upper and lower sides of the condenser lens are respectively connected with a first positioning member and a second positioning member, the first positioning member is inserted into a groove at the bottom in the housing, and the second positioning member is embedded in a slide rail at the top in the housing.

5. An endoscope light guide structure according to claim 4, characterized in that the light condensing surface of the condensing lens is a first convex mirror, the first convex mirror is opposite to the light emitting end of the LED cold light source, the light emitting surface of the condensing lens is a second convex mirror, the second convex mirror is opposite to the light inlet of the optical fiber channel, and the plastic optical fiber is inserted into the optical fiber channel.

6. An endoscope light guide structure according to claim 5, characterized in that the distance between the convex mirror of the condenser lens and the light inlet of the optical fiber channel is 0.5mm.

7. An endoscope light guide structure according to claim 1, wherein the light-collecting surface of the light-emitting lens is a first concave mirror, a first fixing block is disposed on one side of the first concave mirror, the light-emitting surface of the light-emitting lens is a second concave mirror, a second fixing block is disposed on one side of the second concave mirror, the first fixing block and the second fixing block are opposite, and the light-emitting lens is inserted into the groove of the tip end portion through the first fixing block.

8. An endoscope light guide structure according to claim 1, wherein the maximum diameters of the convex surfaces of the first convex mirror and the second convex mirror of the condenser lens are both 10.056mm, the single-side convex thicknesses of the first convex mirror and the second convex mirror are both 1.75mm, and the total thickness of the condenser lens is 4.5mm; the maximum diameters of the concave surfaces of the first concave mirror and the second concave mirror of the light-emitting lens are both 2.435mm, the concave depths of the first convex mirror and the second convex mirror are both 0.45mm, and the total thickness of the light-emitting lens is 1.33mm.