Optical waveguides – Having particular optical characteristic modifying chemical... – Of waveguide core
Reexamination Certificate
2007-03-20
2007-03-20
Pak, Sung (Department: 2874)
Optical waveguides
Having particular optical characteristic modifying chemical...
Of waveguide core
C385S123000, C385S144000, C385S901000, C362S582000
Reexamination Certificate
active
10797761
ABSTRACT:
A light pipe with uniform side-light emission has a core comprising a polymer, and a fluoropolymer cladding on the core with a lower refractive index than the core. Light-scattering material is distributed within the core along an active section of light pipe in which side-light emission is desired, with a density gradient chosen to achieve uniform side-light emission. Another light pipe with uniform side-light emission has a core comprising a polymer, and a fluoropolymer cladding on the core with a lower refractive index than the core. Light-scattering material is distributed within at least one of the cladding and the core along an active section of light pipe in which side-light emission is desired, with a density gradient chosen to yield uniform side light emission, and substantially only in a radial swath, along the longitudinal axis of the light pipe, of substantially less than 360 degrees.
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1 page entitled “Technical Notes” from http://www.zeusinc.com/zeus-catalog-11.pdf webpage (when last viewed on May 2, 2004) showing products produced by extrusion technology—admitted as prior art.
Specification and drawings for U.S. Appl. No. 10/796,830, filed Mar. 9, 2004, for Light Pipe with Directional Side-Light Extraction by Roger F. Buelow II, John M. Davenport, and Chris Jenson.
This application is copending with the present application and is assigned, or subject to assignment, to the same assignee as the present application.
Specification and drawings for U.S. Appl. No. 10/797,383, filed Mar. 10, 2004, for Light Pipe with Side Light Extraction by Roger F. Buelow II, Chris H. Jenson, and John M. Davenport.
Specification and drawings for U.S. Appl. No. 10/108,279, filed Apr. 18, 2005, for Efficient Luminaire with Directional Side-Light Extraction by William J. Cassarly, Thomas L.R. Davenport, John M. Davenport, and Chris H. Jenson.
Buelow, II Roger F.
Davenport John M.
Jenson Chris H.
Bruzga Charles E.
Bruzga & Associates
Fiberstars Incorporated
Pak Sung
Stein James D.
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