Optical waveguides – Miscellaneous
Reexamination Certificate
2006-10-03
2006-10-03
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
Miscellaneous
C385S141000, C501S040000, C065S398000
Reexamination Certificate
active
07116888
ABSTRACT:
The invention is directed to chalcogenide glasses suitable for use in plastics forming processes. The glasses have the general formula YZ, where Y is Ge, As, Sb or a mixture of two or more of the same; Z is S, Se, Te, or a mixture of two or more of the same; and Y and Z are present in amounts (in atomic/element percent) in the range of Y=15–70% and Z=30–85%. The chalcogenide glasses of the invention have a 10,000 poise temperature of 400° C. and are resistant to crystallization when processed at high shear rates at their 10,000 poise temperature. The glasses can be used to make, among other items, molded telecommunication elements, lenses and infrared sensing devices.
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Aitken Bruce Gardiner
Coonan Everett William
Currie Stephen Charles
Monahan Beth Costello
Wu Lung-Ming
Corning Incorporated
Douglas Walter M.
Ullah Akm Enayet
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