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US 8,929,703 B2Granted
Uniform UV efficient light diffusing fiber
AssigneeCorning Incorporated
InventorsStephan Lvovich Logunov, Paul John Shustack
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Abstract
Light diffusing optical fibers for use in ultraviolet illumination applications and which have a uniform color gradient that is angularly independent are disclosed herein along with methods for making such fibers. The light diffusing fibers are composed of a silica-based glass core that is coated with a number of layers including a scattering layer.
Claims12
A light diffusing fiber for emitting ultraviolet radiation comprising:
- a. a core comprising a silica-based glass comprising scattering defects;
- b. a cladding in direct contact with the core;
- and
- c. a scattering layer in direct contact with the cladding , the scattering layer comprising nano- to microscale voids or nano- or microparticles of a UV transparent scattering material in a polymer matrix;
- wherein the average intensity of the emitted ultraviolet radiation does not vary by more than about ±30% for all viewing angles from 15° to about 150° relative to the direction of propagation of the light in the light diffusing optical fiber.
2 more elements
Dependencies are inferred from the claim text.