Transparent, fixed tint glass lenses

Details Transparent, fixed tint glass lenses Transparent, fixed tint glass lenses

1994-08-02

1995-08-01

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 65, 501 66, 501 67, 501 69, 501 71, C03C 3085

Patent

active

054380243

ABSTRACT:
A transparent, fixed tint glass lens is provided having a thickness of between about 1.0 mm and about 1.8 mm and which is derived from an alkali silicate composition containing, in terms of weight percent on an oxide basis, at least 6.2% iron oxides, at least 0.03% cobalt oxide and at least 0.12% nickel oxide in the presence of an oxidizing agent such as arsenic oxide. Preferably, the lenses have a transmittance of not more than 1% of ultraviolet radiation at 380 nm.

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