SU1485181A1 - Adjusting coupler for light guides - Google Patents

Description

The invention relates to optical fibers intended, in particular, for their precise connection with optoelectronic elements, and to improve the accuracy of the adjustment by reducing the radial and axial backlash. In the device, the eccentric transition sleeve 4 is made with tapered surfaces mating with the surfaces of the housing 1 and the internal sleeve 5 ,. containing an eccentric mounted light guide 11. Due to the different taper of the mating surfaces, axial displacements are compensated during alignment (rotation of the sleeves 4 and 5). The taper while securing with nuts 6 and 7 eliminates radial play.

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The invention relates to the field of optical fibers and is intended, in particular, for the precise connection of optical fibers and optoelectronic elements "

The aim of the invention is to improve the accuracy of the adjustment by reducing the radial and axial backlash.

1 shows a device for the case of connection to optoelectronic ^- 'device; in fig. 2 - compensation scheme for axial clearances.

The connecting device comprises a housing 1, a holder 2 of an optoelectronic element 3 (for example, a radiator), a transition sleeve 4, an internal sleeve 5, fixing nuts 6 and 7, elastic gaskets 8 and 9 and a tip 10 with a light guide 11 fixed in the sleeve 5 by means of an element 12.

The surfaces of the housing 1 and the sleeves 4 and 5 are made conical with a different angle of taper (the case of a different sign of the angles of taper is shown). The outer and inner surfaces of the sleeve 4 are eccentric, the hole for the light guide '11 is also eccentrically located in the sleeve 5. Nuts b and 7 are installed with the possibility of focusing on the end surfaces of the housing 1 and the sleeve 5 (the case of the presence of elastic gaskets 8 and 9 which it is desirable to perform antifriction). The stop can also be made into the face surface ‘of another sleeve.

The device works as follows.

After installing the light guide 11 into the sleeve 5 and fixing the housing 1 on the holder 2, loosen the nuts 6 and 7 and rotate the sleeves 4 and 5. Due to the eccentric coupling of the surfaces of the housing 1 and the sleeves 4 and 5, rotating the latter, the end of the optical fiber 11 scans a certain circular surface area , perpendicular to the device axis. At a certain position, determined, for example, by the maximum intensity of optical radiation transmitted from the optoelectronic element 3 to the light guide 11, measured by an external indicator (not shown), the sleeve 5 in the sleeve 4 and the sleeve 4 in the housing 1 are tightened by nuts 6 and 7. . Due to the unequal taper of the mating surfaces of the sleeves 4 and 5 and the housing 1, the axial displacements 1 ₁ and 1 ^ (Fig. 2) have a different sign and are mutually compensated. Backlashes are eliminated by using the taper of the mating surfaces and their tight preload.

Claims (1)

Claim Connecting adjustment device for optical fibers, comprising a housing, a hollow adapter sleeve rotatably mounted therein, the inner and outer surfaces of which are eccentric, and the inner sleeve with an eccentric longitudinal hole for the fiber, as well as fixing elements, the adapter sleeve being conjugated along the outer surface with the inner surface of the cone, and on the inner surface - with the outer surface of the inner sleeve, characterized in that in order to improve the accuracy of the adjustment of Due to the reduction of radial and axial play, the mating surfaces of the housing, the inner and transitional sleeves are made conical with different angles of taper, and the fixing elements are made in the form of nuts installed with the possibility of an emphasis on the end surfaces of the housing and one of the sleeves. 1485181 U / g.2