Method for marking an indication to the lens

Details Method for marking an indication to the lens Method for marking an indication to the lens

1979-12-11

1982-05-11

Morgenstern, Norman

Coating processes

Fluorescent or phosphorescent coating

351 51, 351165, 427 541, 427164, 427256, 427384, 427429, B05D 506

Patent

active

043293786

ABSTRACT:
Plastic eyeglass lenses and the like are marked with an identifying character or symbol by applying to the surface thereof or dissolving or comelting therein a flourescent dyestuff according to the disclosed method. When the proper amount of flourescent dyestuff is included the lens appears normal in sunlight but is characteristically marked in whole or in part under ultraviolet light depending on the area treated.

REFERENCES:
patent: 3700487 (1972-10-01), Crandon et al.
patent: 4108827 (1978-08-01), LaLiberte
patent: 4139694 (1979-02-01), LaLiberte
patent: 4186020 (1980-01-01), Wachtel

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