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US 4,398,790 AGranted
Optical fiber device for the transportation and focalization of laser radiation
AssigneeConsiglio Nazionale Delle Ricerche
InventorsGiancarlo Righini, Vera Russo, Stefano Sottini
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Abstract
An optical fiber device for the transportation and focalization of laser radiation, wherein the output terminal of the device presents a convex surface which may be spherical.
Claims9
An optical fiber device for the transportation and focalization of laser radiation, comprising a single optical fiber having a core made of glass or quartz and including entrance and exit terminals, wherein said exit terminal is a convex surface formed in the optical fiber material and doped to create an index of refraction axially different than the main body of the optical fiber;
- and
- said exit terminal of the optical fiber device is a microlens incorporated into the fiber, the radius of curvature of which is controlled by the amount of dopant used to create said axially different index of refraction.
Dependencies are inferred from the claim text.