Permanent tint photochromic glasses

Details Permanent tint photochromic glasses Permanent tint photochromic glasses

1996-01-09

1997-06-17

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 63, 501 66, 501 77, C03C 402, C03C 406

Patent

active

056397011

ABSTRACT:
A photochromic glass having colorant incorporated in the glass composition to impart a permanent tint, and having its chromaticity point shifted from the blue-green side toward the red side of the white point in the CIE chromaticity coordinate system, and a method of producing such article by heating the article for a sufficient time, and at a sufficient temperature, in a dilute, hydrogen-containing atmosphere to so move the chromaticity point.

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patent: 5256601 (1993-10-01), Kerko et al.
patent: 5424255 (1995-06-01), Kassner
patent: 5491117 (1996-02-01), Kerko et al.

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