Optical waveguides – With optical coupler – Input/output coupler
Patent
1990-03-07
1991-12-24
Sikes, William L.
Optical waveguides
With optical coupler
Input/output coupler
G02B 626
Patent
active
050746324
ABSTRACT:
The present invention relates to improvements on fiberoptic diffusers for use in PDT and methods of making the same. This invention discloses a fiberoptic cylindrical diffuser dispersing light outwardly in a cylindrical scattering pattern which includes a fiber with a jacket-stripped core tip, a thin layer of scattering medium coated on the bare core tip, and a sleeve member with a closed end enclosing the fiber tip without touching the scattering medium and fixed on the jacket of the fiber. The sleeve member may include a tapered head. The present invention also discloses a fiberoptic spherical diffuser radiating light outwardly in a spherical scattering pattern. The spherical diffuser comprises a fiber with a jacket-stripped core tip, a bushing member with open ends circumferentially surrounding the core tip and fixed on the jacket of the fiber, and a scattering medium enclosing a portion of the bushing member and the fiber core tip in a spherical form.
REFERENCES:
patent: 4660925 (1987-04-01), McCaughan, Jr.
patent: 4693556 (1987-09-01), McCaughan, Jr.
Health Research , Inc.
Heartney Phan T.
Sikes William L.
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