Patent ID: 6216360
Filing Date: 2001-04-17
Classification: B01F

Abstract:
A device for drying, heating, and/or coloring lenses comprising:an electrically,infrared and conductive heating means to heat said lenses placed in a dye containing inner tank such that said infrared and conductive heating means enhances diffusion of dye solution into a lens for deeper dye penetration;microprocessor temperature control means with individual temperature sensor probes to precisely monitor dye temperature to eliminate burning or crystallization of said dye solution;spill containment means such that dye boiling from said tank is contained;stirring means keeping said dye solution in constant agitation such that sediment formation prevents the burning or crystallization of said dye solution along with maintaining a uniform high concentration level of the dye around the lenses for higher temperature treatment and higher rates of diffusion of dye into the lenses.