Corning Incorporated

Richard H Crane

Ronald Leroy Stewart

William L Haynes

Laura O De Angelis

The present invention is directed at a family of glasses capable of absorbing UV radiation and filtering yellow light in the visible region of the spectrum, the family of glasses having a composition consisting essentially, in terms of weight percent on the oxide basis, of: 55-95.7% SiO , 0-28% B O , 0.5-18% Al O , 0-4% SrO, 0-13% BaO, 0-13% CaO, 0-8% MgO, 0-7.5% Na O, 0-9.5% K O, 0-1.5% Li O, 0-1.5% Sb O , 0.4-4.5% Nd O , and 0.1-1% CeO . Glasses of the present invention are capable of employment as envelopes for tungsten-halogen lamps and other high temperature light sources, as well as sealed-beam incandescent headlights. Also, the glasses can be used as for other applications where high contrast and enhanced visible properties of transmitted or reflected visible light can be a benefit, such as opthalmic glass, computer screens with enhanced contrast properties, or glass hosts for lasers.

Ultraviolet absorbing and yellow light filtering glass article

The present invention is directed at a family of glasses capable of absorbing UV radiation and filtering yellow light in the visible region of the spectrum, the family of glasses having a composition consisting essentially, in terms of weight percent on the oxide basis, of: 55-95.7% SiO,, 0-28% B,O,, 0.5-18% Al,O,, 0-4% SrO, 0-13% BaO, 0-13% CaO, 0-8% MgO, 0-7.5% Na,O, 0-9.5% K,O, 0-1.5% Li,O, 0-1.5% Sb,O,, 0.4-4.5% Nd,O,, and 0.1-1% CeO,. Glasses of the present invention are capable of employment as envelopes for tungsten-halogen lamps and other high temperature light sources, as well as sealed-beam incandescent headlights.

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Elmira, NY, United States of America

Richard H Crane