Method of using a tablet for introducing tint, UV absorbers and other chemicals into spectacle lens and optical filter tinting systems
AssigneeBrain Power Co.
InventorsHerbert A. Wertheim, William F. Moore
Life of this patent
Estimating the term…
Abstract
The method of using a tablet or coated tablet to introduce tint concentrate, UV absorbers, decolorant, conditioner and other optical chemistry into the dyebaths used for tinting plastic ophthalmic non-contact spectacle lenses and optical filters.
Claims7
The method of using tablets or coated tablets to introduce tint, UV absorbers, decolorant, conditioners and other optical chemistry into dyebaths for coloring and otherwise treating plastic non-contact spectacle lenses and optical filters, said method comprising the following steps of:
- a. providing a combination of powdered or granular tint, powdered or granular UV absorbers, powdered or granular decolorant along with powdered or granular surfactants all in the form of powders or granules and designed to produce the desired tinting color, UV absorption or other treatment for non-contact spectacle lenses or optical filters;
- b. compressing the powders or granules in a mold by the pressure needed to produce a strong, solid tablet which can be molded in various geometrical shapes;
- c. introducing the solid tablet into liquid in a dyebath, thereby obtaining a solution for coloring and otherwise treating plastic non-contact spectacle lenses and optical filters.
The method of using tablets or coated tablets to introduce tint, UV absorbers, decolorant, conditioners and other optical chemistry into dyebaths for coloring and otherwise treating plastic non-contact spectacle lenses and optical filters, said method comprising the following steps of:
- a. generating in various geometrical shapes a tablet from solid forms of tint, UV absorbers, decolorant or surfactants designed to produce the desired tinting color, UV absorption or other treatment for non-contact spectacle lenses or optical filters;
- b. introducing the solid tablet into liquid in a dyebath, thereby obtaining a solution for coloring and otherwise treating plastic non-contact spectacle lenses and optical filters.
Dependencies are inferred from the claim text.