Photochromic glass compositions for lightweight lenses

Details Photochromic glass compositions for lightweight lenses Photochromic glass compositions for lightweight lenses

1985-11-28

1986-08-26

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 59, C03C 406, C03C 3118

Patent

active

046083499

ABSTRACT:
Photochromic glass compositions for thin refractive-index-corrected lens elements consisting essentially of about:

REFERENCES:
patent: 3208860 (1965-09-01), Armistead et al.
patent: 4018965 (1977-04-01), Kerko et al.
patent: 4130437 (1978-12-01), Mazeau et al.
patent: 4168339 (1979-09-01), Kerko et al.
patent: 4190451 (1980-02-01), Hares et al.
patent: 4358542 (1982-11-01), Hares et al.
patent: 4374931 (1983-02-01), Courbin et al.
patent: 4407966 (1983-10-01), Kerko et al.
patent: 4550087 (1985-10-01), Kerko et al.

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