Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Reexamination Certificate
2005-05-17
2005-05-17
Group, Karl (Department: 1755)
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
C501S027000, C501S031000, C501S077000
Reexamination Certificate
active
06893991
ABSTRACT:
The invention relates to a melt-formed, high-silver, alkali-free, borosilicate glass that can be used for fabricating optical devices. For gradient index lenses, the glass can be subjected to an ion exchange process in order to introduce a less polarizable ion onto the glass surface having a higher refractive index on the surface relative to the center of the glass. The glass is unique in that the silver ions are not introduced by ion exchange. Rather, the high silver content of the glass is achieved during melting. As melted, the transparent alkali-free, borosilicate glass produced by the inventive method contains a high concentration of silver, exhibits a high refractive index and negligible attenuation at wavelengths longer than about 400 nm, making it particularly suitable for high performance fiber optic components such as gradient index or so-called GRIN lenses.
REFERENCES:
patent: 3524737 (1970-08-01), Doyle et al.
patent: 3615322 (1971-10-01), Bogart et al.
patent: 3615323 (1971-10-01), Cornelissen
patent: 3639113 (1972-02-01), Aslanova et al.
patent: 4075024 (1978-02-01), Armistead
patent: 4160654 (1979-07-01), Bartholomew et al.
patent: 4414281 (1983-11-01), Hoda
patent: 5007948 (1991-04-01), Araujo
patent: 07048142 (1995-02-01), None
patent: 2000203876 (2000-07-01), None
patent: 2000302478 (2000-10-01), None
Machine translation of JP 2000-203876.*
Machine translation of JP 07-048142.*
Machine translation of JP2000-302478.*
Rindone, G.E, “XVI.-The Spontaneous Growth of Silver Films on Glasses of High Silver Content”, “Journal of Society of Glass Technology”, 37 (1953), 124-128.*
Kaps, Karthe, Muller, Possner, and Schreiler, “Glasses for Optoelectronics”,ECO Proceedings, Paris France, vol. 1128, Apr. 24-27, 1989.
Araujo, “Journal of Non-Crystalline Solids”, 58, (1983), 201-208.
Araujo and Fehlner, “Journal of Non-Crystalline Solids”, 197, (1997), 154-163.
Araujo and Schreurs, “Phys. Chem. Glasses”, 23, (1982), 109.
Araujo, “Journal of Non-Crystalline Solids”, 81, (1986), 251-254.
Araujo Roger J.
Trotter, Jr. Donald M.
Bolden Elizabeth A.
Chen Siwen
Corning Incorporated
Group Karl
Schaeberle Timothy M.
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