Focusing fiber optic

G - Physics – 02 – B

Patent

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Details

G02B 6/32 (2006.01) G02B 6/26 (2006.01) G02B 6/42 (2006.01)

Patent

CA 2467400

The present invention is a fiber optic waveguide adapted for focusing a beam of light at an obtuse angle to the optical axis. A focusing end of the fiber optic is polished at an angle such that the surface normal does not coincide with the optical axis, which is defined by the path of the beam of light through the fiber optic waveguide. The angle .theta. is necessarily greater than 0 degrees and less than 90 degrees. The present invention further includes a focusing lens coupled to the outside of the fiber optic waveguide at its focusing end. The focussing lens may be a ball lens, and it is attached to the exterior of the cladding layer by an adhesive material.

L'invention concerne un guide d'onde à fibre optique conçu pour focaliser un faisceau lumineux selon un angle obtus par rapport à l'axe optique d'une fibre optique. Une extrémité de focalisation de la fibre optique est polie selon un angle tel que la surface perpendiculaire ne coïncide pas avec l'axe optique défini à l'aide du chemin du faisceau lumineux à travers le guide d'onde à fibre optique. L'angle .theta. est nécessairement supérieur à zéro degré et inférieur à 90 degrés. L'invention concerne également une lentille de focalisation couplée à l'extérieur du guide d'onde à fibre au niveau de son extrémité de focalisation. La lentille de focalisation peut être une lentille de type bille, et peut être fixée à l'extérieur de la couche gaine à l'aide d'un matériau adhésif.

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