Highly birefringent glass

Compositions: ceramic – Ceramic compositions – Devitrified glass-ceramics

Reexamination Certificate

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C501S059000

Reexamination Certificate

active

06979661

ABSTRACT:
A birefringent glass composed of a phase-separated glass is provided. The phase-separated glass includes a borosilicate glass in which fluorine and a constituent that tends to crystallize into a high refractive index phase as a consequence of phase separation are included. In one embodiment, the constituent comprises TiO2.

REFERENCES:
patent: 5375012 (1994-12-01), Borrelli et al.
patent: 5627676 (1997-05-01), Borrelli et al.

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