High-temperature-resistant glass bundled optical fiber

Abstract

The utility model discloses a high temperature resistant glass bundled optical fiber, which belongs to the technical field of optical fiber light transmitting bundles, and comprises a working end joint, a light source end joint and a metal hose, the working end joint is connected with the light source end joint through the metal hose, and a glass optical fiber bundle is arranged in the metal hose; the glass optical fiber bundle is formed by bonding two ends of a group of glass optical fibers through inorganic glue, a lantern ring is arranged at one end, away from the metal hose, in the light source end connector, the outer wall of the lantern ring is bonded with the inner wall of the light source end connector through inorganic glue, and the outer wall of the glass optical fiber bundle is bonded with the inner wall of the lantern ring through inorganic glue. The outer wall of the glass optical fiber bundle is bonded with the inner wall of the working end connector through epoxy glue, and the two ends of the metal hose are bonded with the inner wall of the working end connector and the inner wall of the light source end connector through epoxy glue respectively. By adopting the bonding process of inorganic glue, the temperature resistance of the light source end of the glass bundled optical fiber can be improved, and the glass bundled optical fiber can adapt to most LED light sources in the market at present.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber light guides, in particular to a high temperature resistant glass bundled optical fiber. Background Art

[0002] Multi-component glass optical fiber has good light-guiding properties in the visible-near infrared band and excellent color performance in lighting applications. Due to its large numerical aperture and excellent ability to collect and scatter light, it is widely used in industrial lighting, medical lighting, machine vision and other fields. The diameter of the single fiber of glass optical fiber is very small, usually 30μm, 50μm, 70μm, and is often bundled and bonded into a bundle for use, that is, a glass optical fiber bundle.

[0003] In practical applications, connectors need to be made at both ends of the glass fiber bundle. One end is used as the input end to connect to the LED light source, and the other end is used as the output end for lighting. A hose is used in the middle for connection and protection.

[0004] LED is often used as the light source of glass bundled optical fiber. When the LED light source is powered on, it will convert and generate a certain amount of heat, and the temperature at the light outlet is higher. The glass optical fiber bundle needs to be coupled with the light outlet of the LED light source using a connector, and part of the light will be blocked by the metal part of the connector, further generating heat. Due to the above two reasons, the temperature resistance of glass bundled optical fiber must be taken seriously in practical applications.

[0005] The conventional production process is to use epoxy resin glue to bond the ends of glass bundled optical fibers, but the temperature resistance of epoxy glue is poor (within 200°C), and the heat concentration on the end face of the bundled optical fiber often burns the epoxy glue and contaminates the optical fiber. Especially at present, the output power of LED light sources is gradually increasing, and glass bundled optical fibers using epoxy glue cannot meet the use requirements. Utility Model Content

[0006] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a high temperature resistant glass bundled optical fiber, which is used to improve the temperature resistance of the glass bundled optical fiber.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a high temperature resistant glass bundled optical fiber, comprising a working end joint, a light source end joint and a metal hose, wherein the working end joint and the light source end joint are connected by a metal hose, and a glass optical fiber bundle is arranged in the metal hose. The glass optical fiber bundle is formed by bonding a group of glass optical fiber filaments at two ends by inorganic glue;

[0009] A ring is provided in the light source end connector at one end away from the metal hose, the outer wall of the ring is bonded to the inner wall of the light source end connector by inorganic glue, the outer wall of the glass fiber bundle is bonded to the inner wall of the ring by inorganic glue, the outer wall of the glass fiber bundle is bonded to the inner wall of the working end connector by epoxy glue, and both ends of the metal hose are respectively bonded to the inner wall of the working end connector and the inner wall of the light source end connector by epoxy glue.

[0010] An optimal technical solution of the utility model is that a conical transition hole is provided at one end of the collar close to the metal hose.

[0011] An optimal technical solution of the utility model is that the inner diameter of the metal hose is greater than the diameter of the glass optical fiber bundle.

[0012] An optimal technical solution of the utility model is that the working end connector and the light source end connector are quick-insert connectors.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a high temperature resistant glass bundle optical fiber, which adopts an inorganic adhesive bonding process to improve the temperature resistance of the light source end of the glass bundle optical fiber, which is sufficient to adapt to most LED light sources currently on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the high temperature resistant glass bundled optical fiber provided by the specific implementation method of the utility model;

[0016] Figure 2 This is a cross-sectional view of a high temperature resistant glass bundled optical fiber provided by a specific embodiment of the utility model;

[0017] Figure 3 yes Figure 2 A partial enlarged view of the

[0018] In the figure:

[0019] 1. Working end connector; 2. Light source end connector; 3. Metal hose; 4. Glass fiber bundle; 5. Ferrule; 6. Inorganic glue; 7. Epoxy glue; 8. Conical transition hole. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0021] As shown in the figure, this embodiment provides a high-temperature resistant glass bundled optical fiber, including a working end connector 1, a light source end connector 2 and a metal hose 3, wherein the working end is a light output end, the light source end is a light input end, the working end connector 1 and the light source end connector 2 are quick-plug connectors, the working end connector 1 and the light source end connector 2 are connected by a metal hose 3, and a glass optical fiber bundle 4 is arranged in the metal hose 3; the glass optical fiber bundle 4 is formed by bonding a group of glass optical fiber filaments at two ends by inorganic glue; the metal hose 3 plays a role in protecting the glass optical fiber bundle 4;

[0022] A ring 5 made of aluminum alloy is provided at one end of the light source end connector 2 away from the metal hose 3, and is used to fix and bond the glass fiber bundle 4, and is bonded to the connector at the same time; the outer wall of the ring 5 is bonded to the inner wall of the light source end connector 2 through an inorganic glue 6, the outer wall of the glass fiber bundle 4 is bonded to the inner wall of the ring 5 through an inorganic glue 6, the outer wall of the glass fiber bundle 4 is bonded to the inner wall of the working end connector 1 through an epoxy glue 7, and both ends of the metal hose 3 are bonded to the inner wall of the working end connector 1 and the inner wall of the light source end connector 2 through epoxy glue 7 respectively. The bonding process using the inorganic glue 6 can increase the temperature resistance of the light source end of the glass bundled optical fiber from <200°C to <400°C, which is sufficient to adapt to most LED light sources currently on the market.

[0023] The end of the ferrule 5 close to the metal hose 3 is provided with a tapered transition hole 8, which facilitates the insertion of the optical fiber bundle into the ferrule 5 and prevents the end of the optical fiber bundle from being damaged during installation, thereby affecting the use.

[0024] The inner diameter of the metal hose 3 is greater than the diameter of the glass optical fiber bundle 4 , so the metal hose 3 can improve the heat dissipation effect, and the glass optical fiber bundle 4 does not contact the metal hose 3 , which can prevent the metal hose 3 from contaminating and damaging the optical fiber bundle.

[0025] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A high temperature resistant glass bundled optical fiber, characterized in that: The invention comprises a working end joint (1), a light source end joint (2) and a metal hose (3), wherein the working end joint (1) and the light source end joint (2) are connected via the metal hose (3), wherein a glass optical fiber bundle (4) is arranged in the metal hose (3), and the glass optical fiber bundle (4) is formed by bonding a group of glass optical fiber filaments at two ends by inorganic adhesive; A ring (5) is provided at one end of the light source end connector (2) away from the metal hose (3); the outer wall of the ring (5) is bonded to the inner wall of the light source end connector (2) by means of an inorganic adhesive (6); the outer wall of the glass optical fiber bundle (4) is bonded to the inner wall of the ring (5) by means of an inorganic adhesive (6); the outer wall of the glass optical fiber bundle (4) is bonded to the inner wall of the working end connector (1) by means of an epoxy adhesive (7); and the two ends of the metal hose (3) are respectively bonded to the inner wall of the working end connector (1) and the inner wall of the light source end connector (2) by means of the epoxy adhesive (7).

2. The high temperature resistant glass bundled optical fiber according to claim 1, characterized in that: The end of the collar (5) close to the metal hose (3) is provided with a tapered transition hole (8).

3. The high temperature resistant glass bundled optical fiber according to claim 1, characterized in that: The inner diameter of the metal hose (3) is greater than the diameter of the glass optical fiber bundle (4).

4. The high temperature resistant glass bundled optical fiber according to claim 1, characterized in that: The working end connector (1) and the light source end connector (2) are quick-insert connectors.

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