Patent Number: 6,255,238

Title: IR and UV absorbing brown solar glasses, ophthalmic lenses

Abstract: The object of the present invention is brown solar glasses, absorbing UV or IR radiation, as well as solar ophthalmic lenses in said glasses. Said glasses have the following composition, expressed in percentages by weight: SiO.sub.2 : 64-71; B.sub.2 O.sub.3 : 2-8; Al.sub.2 O.sub.3 : 0-4; ZrO.sub.2 : 0-2; Li.sub.2 O: 0-4; Na.sub.2 O: 6-10; K.sub.2 O: 7-16; CaO: 0-5.5; ZnO: 0-5.5; TiO.sub.2 ; 0-2; Fe.sub.2 O.sub.3 : 3-9; Co.sub.3 O.sub.4 : 0-0.030; NiO: 0-0.2; SeO.sub.2 : 0.0030-0.1; As.sub.2 O.sub.3 : 0-0.1; Sb.sub.2 O.sub.3 : 0-0.1; SnO.sub.2 : 0-0.1; Cl: 0-2; Br: 0-2; F: 0-2.

Inventors: Brocheton; Yves A. H. (Fontenay-sous-Bois, FR)

Assignee: Corning S.A.

International Classification: C03C 3/089 (20060101); C03C 3/076 (20060101); C03C 4/08 (20060101); C03C 4/00 (20060101); C03C 3/11 (20060101); C03C 4/02 (20060101); C03C 003/083 (); C03C 003/085 (); C03C 003/087 (); C03C 003/089 (); C03C 003/091 ()

Expiration Date: 07/03/2018