Optical filter glasses

Details Optical filter glasses Optical filter glasses

1995-01-23

1996-02-13

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 56, 501 59, 501 77, C03C 408

Patent

active

054911176

ABSTRACT:
This invention is directed to the production of a silver halide-containing glass article essentially free from silver halide crystals exhibiting a bright yellow coloration which strongly attenuates the transmission of ultraviolet radiation and radiation having a wavelength up to about 450 nm, said article having an integral reduced surface layer thereon, the depth of that layer being sufficient to effectively prevent the transmission therethrough of ultraviolet radiation and radiation having a wavelength up to about 450 nm.

REFERENCES:
patent: 3208860 (1965-09-01), Armistead et al.
patent: 3892582 (1975-07-01), Simms
patent: 3920463 (1975-11-01), Simms
patent: 4190451 (1980-02-01), Hares et al.
patent: 4240836 (1980-12-01), Borelli et al.
patent: 4290794 (1981-09-01), Wedding
patent: 4537612 (1985-08-01), Borrelli et al.
patent: 4710430 (1987-12-01), Borrelli et al.
patent: 4832724 (1989-05-01), Borrelli et al.
patent: 4840655 (1989-06-01), Borrelli et al.
patent: 5381193 (1995-01-01), Wedding

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