C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
96/76
C03C 4/04 (2006.01) C03C 3/085 (2006.01) C03C 21/00 (2006.01) C03C 23/00 (2006.01) G03G 5/085 (2006.01)
Patent
CA 1128800
Abstract of the Disclosure This invention is concerned with hydrated glass articles having base compositions within the Na2O and/or K2O-ZnO- Al2O3-SiO2-Cl field and having at least a surface layer thereon containing Ag-AgCl crystals which impart photo- anisotropic effects to the glass articles. Silver ions are introduced into the surface layer through a solution ion exchange process with sodium and/or potassium ions of the parent glass. The silver remains in the ionic state until exposure to ultraviolet radiation which results in the development of silver-containing aggregates, i.e., Ag-AgCl, via a photolytic reaction. The aggregates contribute to photo-anisotropic absorption bands which are centered around 340 nm and 700 nm. Polarization of the photo-dichroic and photo-birefringent effects of the inventive products can be altered reversibly between two arbitrary directions without fatigue. The photo-anisotropic image can be read cyclically essentially indefinitely without destruction. The product of the invention is eminently suitable as a photosensitive medium for storing optical information. -74-
325857
Corning Glass Works
Gowling Lafleur Henderson Llp
LandOfFree
Photosensitive colored glasses exhibiting alterable... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photosensitive colored glasses exhibiting alterable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photosensitive colored glasses exhibiting alterable... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-12536