TWI396877B - Fiber plug - Google Patents

Description

Fiber optic connector

The present invention relates to a fiber optic connector, and more particularly to a fiber connector that eliminates the conventional dispensing process and allows the fiber to be accurately fixed in the connector to obtain better optical characteristics.

According to the fiber, the fiber is a glass fiber or a transparent plastic fiber which can transmit light and has a fine shape, and includes a fiber portion at the center portion and a protective skin layer of the outer layer. When applied to optical communication, a connector is usually assembled at one end thereof to form a fiber connector. Please refer to the first figure and the second figure, which are a headset of a fiber connector and a perspective view of assembling one end of an optical fiber 7 to the headset. The headgear set includes a headgear 6 and a headgear handle 61. The headgear 6 and the headgear handle 61 are provided with a continuous through hole 62 at the center. The optical fiber 7 can be inserted through the through hole 62 of the head cover 61, and the optical fiber 71 at one end of the optical fiber 7 is passed through the through hole 62. Therefore, the inner diameter of the through hole 62 is larger than the outer diameter of the optical fiber 7 and the optical fiber 71. Therefore, when assembling, the adhesive 63 is placed on the optical fiber 7 and the optical fiber 71, and then the optical fiber 71 is inserted into the through hole 62, so that the adhesive 63 fixes the optical fiber 7 and the optical fiber 71 to the head set. Through hole 62 for use.

However, when the optical fiber 7 is assembled, there is a very strict requirement for the positioning of the optical fiber 7, that is, the alignment deviation between the center of the optical fiber 7 and the aperture center of the through hole 62 must be less than 5 μm, and the optical fiber 7 is fixed by an adhesive 63 as described above. The bonding head, when the optical fiber yarn 71 penetrates into the through hole 62, the adhesive 63 adheres to one side wall of the through hole 62 due to capillary phenomenon, and the adhesive is caused by the pushing of the optical fiber yarn 71 when it is penetrated. 63 has bubble generation, and since the expansion coefficient of the bubble is larger than that of the solid, it is easy to cause the bubble to push the fiber 71, causing the fiber 71 to be displaced, or being pushed by the bubble to be broken, thereby affecting the light transmission characteristics and reducing Fiber 7 and connection The precision of the head joint and the dispensing of the adhesive 63, the precise and complicated process requires not only the use of high-precision assembly equipment, but also the production cost.

SUMMARY OF THE INVENTION The object of the present invention is to provide a fiber optic connector that eliminates the conventional dispensing process and allows the optical fiber to be accurately fixed in the connector to obtain better optical characteristics.

To achieve the above object, the present invention provides a fiber optic connector comprising a connector and at least one optical fiber integrally formed in the connector.

The connecting structure of the connector and the optical fiber is at least one blind hole, and the optical fiber is formed in the blind hole.

The optical fiber connector further includes at least one transparent heterogeneous substrate. The transparent heterogeneous substrate is integrally formed with the optical fiber at one end of the blind hole of the connector and spaced apart from the blind hole. The transparent heterogeneous substrate is made of transparent glass or plastic.

The connecting structure of the connector and the optical fiber is at least one through hole, and the optical fiber is formed in the through hole.

In order to achieve the above object, the present invention provides a method of manufacturing a fiber optic connector, comprising the steps of: first placing at least one optical fiber into a mold for forming a connector and setting a position and performing alignment; and then injecting a connection into the mold The raw material of the head; finally, after the connector is solidified, the fiber connector can be separated by opening the mold.

In summary, the invention integrally forms the optical fiber and the connecting head, and does not need to additionally apply a binder, thereby avoiding the problem of curing deformation and aperture tolerance of the adhesive, and effectively avoiding the generation of bubbles and reducing the fiber loading connection. A misalignment occurs in the head, so that the optical fiber is accurately fixed in the connector, and a fiber connector having better optical characteristics is obtained.

In order to explain in detail the technical content, structural features and objectives of the present invention And the following are exemplified by the embodiments and the drawings.

Referring to the third to fifth figures, the optical fiber connector 100 of the present invention includes a connector 1 and at least one optical fiber 2 integrally formed in the connector 1.

The connecting structure of the connector 1 and the optical fiber 2 is at least one blind hole (not shown), and the optical fiber 2 is formed in the blind hole. The optical fiber connector 100 further includes at least one transparent heterogeneous substrate 3, and the transparent heterogeneous substrate 3 and The optical fibers 2 are integrally formed at one end of the blind hole of the connector 1 and spaced apart from the blind holes.

The arrangement of the transparent heterogeneous substrate 3 increases the light transmittance and strength of the fiber optic connector 100. The surface of the transparent heterogeneous substrate 3 may be a flat surface, or a curved surface having an optically deflected light effect, or a Fresnel surface, or a diffraction pattern surface. The material of the transparent heterogeneous substrate 3 may be transparent glass or plastic.

The connection structure of the connector 1 and the optical fiber 2 may be at least one through hole (not shown), and the optical fiber 2 is formed in the through hole.

The manufacturing method of the optical fiber connector 100 includes the following steps: First, at least one optical fiber 2 is placed in a position in a mold for molding the connector 1 and aligned; and then the raw material of the connector 1 is injected into the mold. Finally, after the head 1 is cured and formed, the fiber connector 100 can be separated by opening the mold.

In the above steps, at least one transparent heterogeneous substrate 3 may be placed together with at least one optical fiber 2 in a position in the mold for molding the joint 1 and aligned; then, the raw material of the joint 1 is injected into the mold; Finally, after the head 1 is cured, the fiber-optic connector 100 containing the transparent heterogeneous substrate can be separated by mold opening.

The above molding method may be infusion molding, injection molding or press molding.

In summary, the optical fiber connector 100 of the present invention integrally molds the optical fiber 2 into the connector 1. The step of assembling the optical fiber into the connector can be omitted, and no additional adhesive is needed, thereby avoiding the curing deformation and the aperture of the adhesive. Tolerance problem, and can effectively avoid the generation of air bubbles, and reduce the insertion of the optical fiber 2 into the connector 1 When the alignment offset is generated, the optical fiber 2 is accurately fixed in the connector 1 to obtain a fiber connector 100 having better optical characteristics.

100‧‧‧Fiber connector

1‧‧‧Connector

2‧‧‧Fiber

3‧‧‧Transparent heterogeneous substrate

The first figure is a partial perspective view of a prior art fiber optic connector.

The second figure is a perspective view of another angle of the fiber optic connector shown in the first figure.

The third drawing is a cross-sectional view of an embodiment of the fiber optic connector of the present invention.

Fig. 4 is a cross-sectional view showing still another embodiment of the optical fiber connector shown in Fig. 3.

The fifth figure is a cross-sectional view of the optical fiber connector shown in the third figure when it is molded in a mold.

1‧‧‧Connector

2‧‧‧Fiber

3‧‧‧Substrate

Claims (3)

An optical fiber connector includes a connector and at least one optical fiber integrally formed in the connector; wherein the fiber connector further comprises at least one transparent heterogeneous substrate, and the transparent heterogeneous substrate and the optical fiber are integrally formed in the blind hole of the connector One end is spaced apart from the blind hole by a distance, wherein the transparent heterogeneous substrate is made of transparent plastic. The optical fiber connector of claim 1, wherein the connection structure of the connector to the optical fiber is at least one blind hole, and the optical fiber is formed in the blind hole. The fiber connector of claim 1, wherein the connection structure of the connector to the optical fiber is at least one through hole, and the optical fiber is formed in the through hole.