JPS6073507A - Optical connector - Google Patents

Abstract

PURPOSE:To minimize the space where a line in a transmission path is deflected at right angles by forming angular faces on the plane where an optical fiber setting part and the optical axis of an optical fiber connector are orthogonal to each other and connecting their optical paths with an optical path deflecting means. CONSTITUTION:In the part where through holes 2 and 3 provided in a device body 1 intersect at right angles, angular faces 28 and 29 orthogonal to the optical axis are formed. The optical signal transmitted by an optical fiber cord 15 is transmitted in a core 16 and is emitted from the end part and becomes a parallel luminous flux by a lens 36 and is deflected at 90 deg. by a reflection mirror 37 and is converged again by a lens 35 and is made incident to the end face of a center optical fiber 41 of an optical fiber connector 40 inserted and fixed to the hole 2 and is transmitted. Consequently, the space required for deflecting the line of the optical fiber transmission path at right angles is minimized.

Description

DETAILED DESCRIPTION OF THE INVENTION (11) Technical Field of the Invention The present invention relates to a connector for an optical fiber transmission line, and more particularly to an optical connector that deflects an optical path at right angles.

(2) Purpose of the Invention In the field of optical communications using optical fibers as optical transmission lines, it is essential to connect and disconnect optical fibers.

Recently, there have been remarkable developments in various optical connectors for such parts, but most of them are straight optical connectors. - High-density packaging is required for power-end communication devices due to the miniaturization of various parts and elements, and the optical transmission lines used there also have to be arranged in a small amount of space. In such a case, the optical fiber connection with the circuit device using the conventional optical connector described above has a limit to miniaturization of the device because it requires a space for the optical fiber connector to protrude orthogonally and a bending allowance for the optical fiber.

In view of these points, the present invention provides an electrical connector.

It is an object of the present invention to provide an optical connector that can minimize the space required for right-angle deflection of a line in an optical fiber transmission line as well as in a coaxial line connector.

Currently, there has been almost no disclosure of known specific configurations of such optical connectors.
The present invention shows its concrete feasibility.

(3) Structure of the Invention The above object is the gist of the structure of the present invention. This is achieved by providing an angular surface formed by a surface orthogonal to each optical axis, and an optical path deflecting means for connecting the optical path of the optical fiber and the optical fiber connector to the angular surface, and the configuration is simplified. It is possible to provide an optical connector with high precision and excellent manufacturability.

(4) Embodiments of the Invention The optical connector of the present invention will be specifically described below with reference to embodiments based on the gist of the invention and with reference to the drawings.

The drawing shows an assembled sectional view of an embodiment of the optical connector of the present invention.

In the figure, the connector main body 1 is a block having an approximately L shape, and through holes 2.3 are bored in the same plane and intersecting at right angles. The holes 2 have the same diameter and pass through, and the other hole 3 has a large diameter portion 4 and a step 5 formed therein.

A C-shaped snug 7 made of a spring material is fitted into the circumferential groove 6 on the outside of the hole 2 side, and the C-shaped snug 7 is enlarged and returned to the inner circumferential groove 10 of the bag-shaped throat 9 having the screw 8. When the nut 9 is fitted, the nut 9 can be rotated and prevented from moving in the axial direction.

At the outer end on the hole 3 side, a screw 12 is provided following a tapered taper 11, and a plurality of slits 13 in the axial direction are provided in the taper 11, and the taper portion 1 is provided on the outside of the taper 11.
1 is fitted with a tightening nut 14 that moves in the axial direction and compresses and tightens it toward the center.

The coating of the optical fiber cord 15 is peeled off for a predetermined length at the tip end to expose the optical fiber core wire 16, and the core wire 16 is inserted into the center hole 18 of the optical fiber support sleeve 17, which has been finished with accurate dimensions, and the end surface is exposed. is optically finished. The outer periphery of the support sleeve 17 fits accurately into the hole 3, but the large diameter portion 4 is attached to the optical fiber cord holding sleeve 19 at the stepped portion 2.
0 and fit together, and are fixed by adhesive 22 injected into grooves 21 on the inner and outer peripheries.

The retaining sleeve 19 further extends over the sheath of the fiber optic cord 15 and has a reinforcing member 23 of the cord 15 in its inner hole.
are folded back and fixed with an adhesive 24 injected together.

In other words, the support sleeve 17 and the holding sleeve 19 are press-fitted and fixed with adhesive in advance, and the end of the optical fiber cord 15 is peeled off to finish the insertion and adhesive. The pleated tapered protective bushing 25 previously inserted over the covering is replaced and inserted into the end groove 26 of the retaining sleeve 19 to protect the mating cord 15 from sharp bending. The taper 27 in the support sleeve 17 facilitates the insertion of the core wire 16 and ensures the amount of adhesive 24.

The holding sleeve 19 thus assembled is inserted into the holes 3 and 4 of the main body, and the nut 14 is tightened to reduce the tapered portion 11 and fix the holding sleeve 19.

At the part where holes 2 and 3 intersect at right angles, the axis of each hole (optical axis)
Corner surfaces 2B and 29 perpendicular to are formed. An optical path polarization assembly 30 is attached to the main body 1 at this corner. The support 31 of the assembly 30 is a cubic block with holes 32.33 drilled in alignment with the optical axis, and holes 32.3 drilled at orthogonal points to the optical axis.
A 45 degree inclined surface 34 is recessed in three directions. This hole 32.33 has a ball lens (or cylindrical lens)
35 and 36 are fitted and fixed with adhesive or the like. Further, a reflecting mirror 37 is installed on the inclined surface 34. Therefore, the reflective surface is located at a point perpendicular to the optical axis. This assembly 30 is assembled externally and covers the corners 28,2.

In the above, the optical signal transmitted to the optical fiber cord 15 is
The center of the optical fiber connector 40 is transmitted through the optical fiber core wire 16, is emitted from the end, becomes a parallel beam of light by the lens 36, is deflected by 90 degrees by the reflecting mirror 37, is converged again by the lens 35, and is inserted and fixed into the hole 2. The light is incident and transmitted from the end face of the optical fiber 41. Of course, transmission from the optical fiber 41 to the optical fiber 16 can also be performed.

In the present invention, the relationship between the coupling nut and the optical fiber connector 40 described above may be reversed, and one-touch coupling can be achieved by using a bayonet type coupling. This part can also be coupled to a light element, for example a light emitting unit, a light receiving unit.

In addition, it is also possible to use a concave mirror, a light guide, etc. as a deflection light stage, and to provide a lens on the main body 1 side, and the optical fiber attachment means is not limited to the configuration of the embodiment.

(5) Effects of the Invention As described above, the optical connector of the present invention has an optical fiber attachment portion and an optical fiber connector coupling portion in the connector body, and a portion where the optical axes of the optical fiber attachment portion and the optical fiber connector intersect, respectively. By providing an angular surface formed by a surface orthogonal to the optical axis of the optical fiber connector, and providing an optical path deflection means for connecting the optical path of the optical fiber and the optical fiber connector to this angular surface, it is possible to achieve extremely simple manufacturing with high precision. The practical effect of optical circuit connection in a limited space is remarkable.

[Brief explanation of the drawing]

The drawing shows an assembled side cross-section of an embodiment of the invention. In the figure, 1 is the main body, 2.3 is a through hole, 9 is a bag-shaped nut, 1
5 is an optical fiber cord, 16.41 is an optical fiber, 28
．． 29 is a corner surface, 30 is an optical path deflecting means body, 34 is an inclined surface,
35 and 36 are lenses, 37 is a reflecting mirror, and 40 is an optical fiber connector. Lr4:,:+1':2]

Claims (1)

[Claims] an optical fiber attachment part and an optical fiber connector coupling part; an angular surface formed by a surface perpendicular to the respective optical axes at a portion where the respective optical axes of the optical fiber attachment part and the optical fiber connector intersect in the same plane; An optical connector characterized in that the corner surface is provided with an optical path deflecting means for connecting the optical path of the optical fiber and the optical fiber connector.