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US 5,074,632 AGranted
Fiber optic diffusers and methods for manufacture of the same
AssigneeHealth Research, Inc.
InventorWilliam R. Potter
Life of this patent
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AssigneeHealth Research, Inc.
InventorWilliam R. Potter
Estimating the term…
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.
A cylindrical fiberoptic diffuser, comprising:
A cylindrical fiberoptic diffuser which has substantially uniform light output in an outwardly cylindrical scattering pattern and can be used in a biological environment, comprising:
A method for manufacture of a cylindrical fiberoptic diffuser, comprising the steps of:
A spherical fiberoptic diffuser for dispersing light in a spherical scattering pattern, comprising:
A method for manufacturing a spherical fiberoptic diffuser radiating light in a spherical scattering pattern, comprising the steps of:
A composition which is used as a light scattering medium in a fiberoptic diffuser and coated on a bare core tip of an optical fiber, consists of an optical adhesive material with a refractive index matching the fiber core and a powdered scattering material with a different refractive index from said adhesive material, said scattering material ranging between 5% and 20% by weight in said composition.
Dependencies are inferred from the claim text.