JPH04165312A - Photo module and manufacture thereof - Google Patents

Abstract

PURPOSE:To mount an arbitrary kind of a photo input output element according to application by providing a receptacle having a sleeve to orderly arrange ferrules and the photo input output element and a housing having an engaging part, an opening part, and a resilient piece. CONSTITUTION:A photo input output element holding part 5 is arranged on the side, opposite to the insertion side of a ferrule 22, of a sleeve 1 to orderly align ferrule 22 used for positioning of an optical fiber 21. A photo input output element 3 to which a lens 4 is fixed is arranged in the photo input output ele ment holding part 5. The photo input and output element holding part 5 is connected to the sleeve 1 through a flange 2 to form a receptacle 15. The recep tacle 15 is fixed to a housing 13 and resilient pieces 12 to lock a photo connec tor plug 20 are arranged in two spots of upper and lower spots of the sleeve 1 of the receptacle 15. An opening part 28 in which the photo connector plug 20 is inserted is formed in the tip of the resilient piece. This constitution mounts an arbitrary kind of the photo input output elements 3, responding to applica tion, in a photo module.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an optical module and a method for manufacturing the same.

[Prior Art 1] Conventionally, FC type optical modules and optical connector plugs have been used in optical communications and the like. This FC type optical module is connected to an optical connector plug by screw connection.

In recent years, optical LANs and the like have started to go against the grain, but optical LANs use a link type connection, which requires connection terminals for a plurality of optical connector plugs. When conventional FC type optical modules and optical connector plugs are connected by screw connection, a certain amount of operation space is required between terminals that are in contact with +9#, and high-density mounting is not possible.

Also, cables that integrate two optical fibers are starting to become a problem, but SC type optical modules and optical connector plugs are used in these cables.

SC type optical modules and optical connector plugs are new optical modules and optical connector plugs that employ a push-pull method, and have a smaller operating space than FC type optical modules and optical connector plugs, making them suitable for high-density packaging.

Optical modules that are compatible with SC type optical connector plugs are:
A necessary number of gamma daugters for connection with a plurality of optical connector plugs are provided, and optical input/output elements are arranged at the ends of each gamma daugter, and these are integrally housed in the housing. Therefore, S
The C-type optical module enables high-density packaging, which cannot be achieved with the FC-type optical module. .

[Problem to be solved by the invention] Although the currently used SC type optical module has become capable of high-density mounting, the optical input/output elements are already formed integrally with the housing. There was a problem in that users of SC type optical modules were unable to mount any type of optical input/output element into the optical module depending on the intended use. [Objects of the present invention] - To provide an optical module in which any type of optical input/output element can be mounted according to its use without impairing high-density packaging, and a method for manufacturing the same.

[Means for Solving the Problems] The above object is to provide a sleeve for aligning ferrules for positioning optical fibers built into an optical connector plug, and a sleeve for aligning ferrules for positioning optical fibers built into an optical connector plug; a receptacle having an optical input/output element fixed on a central axis; a fitting door into which the receptacle is fitted and fixed; an opening into which the optical connector plug is inserted; and an elasticity which locks the optical connector plug. This is achieved by an optical module characterized in that it comprises a housing having a piece and a housing having a piece.

Further, the above object is to fix an optical input/output element on an extension of the central axis of the sleeve on the ferrule insertion side and the warped side with respect to the sleeve in which the ferrules of the optical connector plug are aligned, and to form a first receptacle. and a second step of fitting and fixing the receptacle into a housing that has an opening for fixing the optical connector plug and a fitting part for fitting and fixing the receptacle. This is achieved by a module manufacturing method.

[Function] According to the present invention, an optical module is provided in which a plurality of optical connector plugs can be attached without impairing high-density packaging, and any type of optical input/output element can be attached according to the purpose. realizable.

[Example] An optical module according to a first example of the present invention will be explained using FIG. 1.

The optical module of this embodiment is an optical module in which two receptacles 15 are fitted into a housing 13 and assembled.

This figure is a cross-sectional view of the optical module according to the first embodiment of the present invention, and shows a state in which the optical connector plug 20 is connected to the upper opening 28 of the housing 13.

An optical input/output element holding section 5 is disposed on the side opposite to the insertion side of the ferrule 22 with respect to the sleeve 1 for aligning the ferrule 22 built in the optical connector plug 20 and used for positioning the optical fiber 21. A light input/output cable 3 to which a lens 4 is fixed is disposed within a light input/output element holding portion 5 on an extension of the central axis.

The optical input/output element holding portion 5 and the sleeve 1 are connected via the flange 2, forming a receptacle 15 as a whole.

The receptacle 15 is fitted into the fitting part 26 and fixed to the housing 13. Elastic pieces 12 for locking the optical connector plug 20 are disposed at two locations above and below the sleeve area of the receptacle 15 fitted into the housing 13. An opening 28 into which the optical connector plug 20 is inserted is formed at the tip thereof.

As described above, in this embodiment, after the optical axes of the optical input/output element holder s5 that holds the sleeve 1 and the optical input/output element 3 are aligned in advance, the optical input/output element holding part 5 and the sleeve 1 are attached to the flange 2. It is integrated through For this reason, housing 1
3 and receptacle 15, optical input/output elements 3 such as light receiving elements and light emitting elements can be arbitrarily selected according to desired characteristics such as optical LAN link connection, thereby creating a highly versatile optical module. I can do it.

Further, since the housing 13 can be provided with openings to hold as many optical connector plugs 20 as required, it is also excellent in high-density packaging.

A method for assembling an optical module according to the first embodiment of the present invention will be explained with reference to FIG.

This embodiment is characterized by an assembly method for fitting and fixing the receptacle 15 into the housing 13. A caulking portion 1 is provided around the receptacle fitting portion 26 of the housing 13.
6 is provided, and after fitting the receptacle 15 into the housing 13, the caulking portion 16 is caulked to the flange 2 and fixed by pressure. The caulked part 16 shows the shape before crimping, and the caulked part 17
The receptacle 15 is inserted into the fitting part 26 of the housing 13.
The shape after fitting and crimping is shown.

This method is superior to assembly using adhesive in terms of manufacturing efficiency and the like. When using adhesives, problems such as purchasing and storage of the adhesive, the time it takes for the adhesive to dry, and deterioration of adhesive strength due to the influence of heat tend to occur. If you use it, these problems will not occur.

A method for assembling an optical module according to a second embodiment of the present invention will be described with reference to FIG.

This embodiment is characterized in that the method of fitting and fixing the receptacle 15 into the housing 13 is an assembly method that can be applied when the material of the housing 13 is plastic or the like and is not suitable for crimping or welding.

If the housing 13 is made of a material such as plastic, the receptacle 15 is inserted into the fitting part 26 of the housing 13.
After inserting the receptacle 1, insert the plate 18 from the rear of the receptacle 1.
5 and connect the housing 13 and the plate material 18 with, for example, rivets 19.

Further, if both the housing 13 and the plate material 18 are made of plastic, they can be connected by local melting.

The present invention is not limited to the above embodiments, and various modifications are possible.

For example, in the method for assembling the optical module according to the first embodiment, the seven flange 2 is caulked, but the same effect can be obtained even if the sleeve 1 is deformed by means such as welding or crimping and integrated with the housing 13.

[Effects of the Invention] As described above, according to the present invention, any type of optical input/output element can be attached to a housing that can hold a plurality of optical connector plugs without impairing high-density packaging according to the purpose. Now it can be installed.

Furthermore, according to the present invention, the receptacle and the housing can be connected by a simple method of crimping the housing material or pressing the housing and module from the rear with a plate material, compared to the case where adhesive is used, for example. , it becomes possible to shorten manufacturing time and reduce manufacturing costs.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an optical module according to a first embodiment of the present invention, FIG. 2 is a diagram showing a method of assembling an optical module according to a first embodiment of the present invention, and FIG. 3 is a cross-sectional view of an optical module according to a first embodiment of the present invention. FIG. 3 is a diagram illustrating a method of assembling an optical module according to the embodiment. In the figure, 1... Sleeve 2... Flange 3... Optical input/output element 4... Lens 5... Optical input/output element holding part 12... Elastic piece 13... Housing 15...・Receptacle 16...Caulking part 17...Caulking part 18...Plate material 19...Rivet 20...Optical connector plug 21...Optical fiber 22...Ferrule 26...Fitting part 28 ···Aperture

Claims (1)

[Claims] 1. A sleeve for aligning optical fiber positioning ferrules built into an optical connector plug, and a sleeve located on a side opposite to the ferrule insertion side with respect to the sleeve and fixed on the central axis of the sleeve. a housing having a receptacle having a first input/output element; a fitting part into which the receptacle is fitted and fixed; an opening into which the optical connector plug is inserted; and an elastic piece which locks the optical connector plug. An optical module characterized by: 2. A first step of forming a receptacle by fixing an optical input/output element on an extension of the central axis of the sleeve on the side opposite to the ferrule insertion side with respect to the sleeve in which the ferrules of the optical connector plug are aligned; a second step of fitting and fixing the receptacle into a housing having an opening for fixing the optical connector plug and a fitting part for fitting and fixing the receptacle; . 3. The method for manufacturing an optical module according to claim 2, wherein the housing has a plurality of fitting parts, and the second step includes fitting and fixing the receptacle into each of the plurality of fitting parts. A method for manufacturing an optical module, characterized by: 4. The optical module manufacturing method according to claim 2, wherein in the second step, the receptacle is fixed to the fitting portion of the housing by welding. 5. The method for manufacturing an optical module according to claim 2, wherein a caulking portion is provided around the fitting portion, and the second step includes fitting the receptacle into the fitting portion of the housing, and crimping the fitting portion. A method for manufacturing an optical module, characterized in that the receptacle is fixed by caulking a surrounding caulking part. 6. The method for manufacturing an optical module according to claim 2, wherein the second step includes fitting the receptacle into the fitting portion of the housing and pressing the receptacle against the housing with a plate material to connect the housing and the housing. A method of manufacturing an optical module, characterized in that the receptacle is fixed to the housing by connecting plate materials.