Optical fiber beam expanding connector

Abstract

The utility model relates to the technical field of optical fiber connection, and discloses an optical fiber beam expanding connector which comprises a ceramic sleeve and a socket shell fixedly arranged outside the ceramic sleeve, a ceramic ferrule is inserted in an inner cavity of the ceramic sleeve in a sliding mode, and a collimating lens is fixedly connected in the ceramic ferrule. The end, away from the collimating lens, of the ceramic ferrule is provided with a tail handle, one end of the tail handle is fixed to the socket shell in an extruded mode through a fastening nut sleeve, an O-shaped sealing ring is fixed between the fastening nut sleeve and the tail handle in a clamped mode, and an optical cable sheath with optical fibers is inserted into an inner cavity of the tail handle. And an optical signal output by the optical fiber is transmitted to another optical fiber through the ceramic ferrule and the collimating lens in the ceramic ferrule. According to the utility model, the two paths of optical fibers are in non-contact connection through the socket with the precise ceramic bushing, so that the space coupling transmission of optical signals is realized, the insertion loss is small, the interchangeability is strong, the overall sealing performance is better, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber connection, in particular to an optical fiber beam expansion connector. Background Art

[0002] When manufacturing traditional docking connectors, it is difficult to make the polishing parameters of the fiber end faces consistent, resulting in poor interchangeability of the connectors. In addition, the fiber end faces of docking connectors need to be in contact, so the end faces must be clean and free of any dust particles, otherwise the optical signal will be blocked or even the optical interface will be damaged, causing the connector to malfunction. However, in some application scenarios, cleaning the end faces is not easy and convenient. Furthermore, in environments with high vibration or impact, the end faces of docking connectors will constantly rub, causing damage to the end faces and increasing the insertion loss of the connector. At the same time, the sealing performance of the entire connector needs to be improved to adapt to more severe environments. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a fiber optic beam expansion connector, which solves the problems that the existing docking-type fiber optic connector has excessive insertion loss during daily use and the sealing performance needs to be improved during daily application.

[0005] (II) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A fiber beam expansion connector comprises a ceramic sleeve and a socket shell fixedly arranged on the outside of the ceramic sleeve, a ceramic ferrule is slidably inserted into the inner cavity of the ceramic sleeve, a collimating lens is fixedly connected inside the ceramic ferrule, a tail handle is arranged at one end of the ceramic ferrule away from the collimating lens, one end of the tail handle is squeezed and fixed to the socket shell by a fastening nut sleeve, an O-ring is clamped and fixed between the fastening nut sleeve and the tail handle, an optical cable sheath with optical fiber is inserted into the inner cavity of the tail handle, and an optical signal output by the optical fiber is transmitted to another optical fiber through the ceramic ferrule and the collimating lens inside.

[0008] Preferably, a stepped groove matching the fastening nut sleeve is arranged on the socket shell, and a sealing ring is arranged between the fastening nut sleeve and the socket shell.

[0009] Preferably, the collimating lens and the optical fiber are fixed in the inner cavity of the ceramic ferrule by butt-jointing or fusion-jointing.

[0010] (III) Beneficial effects

[0011] The utility model has the following beneficial effects:

[0012] The fiber beam expansion connector uses a ceramic ferrule and a ceramic sleeve to connect optical fibers in a non-contact manner, is almost unaffected by the cleanliness, vibration intensity or frequency of the installation environment, and has a long service life. The fiber is installed in the center by using a nut sleeve in conjunction with the tail handle and the socket housing, which can be easily disassembled and replaced during daily use. The O-ring arranged between the tightening nut sleeve and the tail handle can effectively improve the sealing performance of the tail handle and the socket housing after installation, and effectively reduce the impact of the external environment on the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the application state structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0015] In the figure: 1. socket housing; 2. ceramic sleeve; 3. ceramic ferrule; 4. collimating lens; 5. tail handle; 6. fastening nut sleeve; 7. O-ring; 8. sealing ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1 The utility model provides a technical solution: an optical fiber beam expansion connector, comprising a ceramic sleeve 2 and a socket shell 1 fixedly arranged on the outside of the ceramic sleeve 2, a ceramic ferrule 3 is slidably inserted into the inner cavity of the ceramic sleeve 2, a collimating lens 4 is fixedly connected to the inside of the ceramic ferrule 3, a tail handle 5 is arranged at one end of the ceramic ferrule 3 away from the collimating lens 4, one end of the tail handle 5 is squeezed and fixed to the socket shell 1 by a fastening nut sleeve 6, an O-ring 7 is clamped and fixed between the fastening nut sleeve 6 and the tail handle 5, an optical cable sheath with optical fiber is inserted into the inner cavity of the tail handle 5, and the optical signal output by the optical fiber is transmitted to another optical fiber through the ceramic ferrule 3 and the collimating lens 4 inside.

[0018] The utility model uses a ceramic ferrule 3 and a ceramic sleeve 2 to connect optical fibers in a non-contact manner, which is almost unaffected by the cleanliness, vibration intensity or frequency of the installation environment and has a long service life. The optical fiber is installed in the center by using a nut sleeve in conjunction with the tail handle 5 and the socket housing 1, which can be easily disassembled and replaced during daily use. The O-ring 7 arranged between the tightening nut sleeve 6 and the tail handle 5 can effectively improve the sealing performance of the tail handle 5 and the socket housing 1 after installation, and effectively reduce the impact of the external environment on the connector.

[0019] Reference Figure 1 and 2 As shown, in this embodiment, a stepped groove matching the fastening nut sleeve 6 is arranged on the socket housing 1, and a sealing ring 8 is arranged between the fastening nut sleeve 6 and the socket housing 1. By arranging the sealing ring 8 between the socket housing 1 and the fastening nut sleeve 6, the sealing performance between the fastening nut sleeve 6 and the socket housing 1 can be effectively guaranteed when the fastening nut sleeve 6 is tightened to fix the tail handle 5 and the socket housing 1. Under the cooperation of the sealing ring 8 and the O-ring 7, the sealing performance of the entire connector is effectively guaranteed, and the service life is improved.

[0020] In this embodiment, the collimating lens 4 and the optical fiber are fixed in the inner cavity of the ceramic ferrule 3 by butt joint or fusion. By butt joint or fusion jointing the optical fiber and the self-focusing microlens in the ceramic ferrule 3, the light beam can be effectively expanded and collimated. The two optical fibers are non-contactly connected through a socket with a precision ceramic sleeve 2 to achieve spatial coupling transmission of optical signals.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical fiber expansion connector, comprising a ceramic sleeve and a socket housing fixedly arranged outside the ceramic sleeve, characterized in that: A ceramic ferrule is slidably inserted into the inner cavity of the ceramic sleeve, a collimating lens is fixedly connected inside the ceramic ferrule, a tail handle is provided at one end of the ceramic ferrule away from the collimating lens, one end of the tail handle is squeezed and fixed to the socket shell by a fastening nut sleeve, an O-ring is clamped and fixed between the fastening nut sleeve and the tail handle, an optical cable sheath with optical fiber is inserted into the inner cavity of the tail handle, and the optical signal output by the optical fiber is transmitted to another optical fiber through the ceramic ferrule and the collimating lens inside.

2. The optical fiber expansion beam connector according to claim 1, characterized in that: The socket shell is provided with a stepped groove matching the fastening nut sleeve, and a sealing ring is arranged between the fastening nut sleeve and the socket shell.

3. The optical fiber expansion beam connector according to claim 2, characterized in that: The collimating lens and the optical fiber are fixed to the inner cavity of the ceramic ferrule by butt-jointing or fusion-jointing.

Images